U.S. patent application number 11/918516 was filed with the patent office on 2008-08-14 for self destructive irreversible security packaging film.
This patent application is currently assigned to Arrow Coated Products Ltd.. Invention is credited to Shilpan Pravinchandra Patel, Nikita Kamlesh Thanawala.
Application Number | 20080190808 11/918516 |
Document ID | / |
Family ID | 37600888 |
Filed Date | 2008-08-14 |
United States Patent
Application |
20080190808 |
Kind Code |
A1 |
Patel; Shilpan Pravinchandra ;
et al. |
August 14, 2008 |
Self Destructive Irreversible Security Packaging Film
Abstract
A self destructive irreversible security packaging water soluble
film and method for manufacturing the same. The water soluble
packaging film is embedded with various security elements, which
will get irreversibly destroyed upon final usage as the whole
package along with its contents will dissolve in water. This
process of self destruction will control the duplication of the
package or alteration of the product inside the package.
Inventors: |
Patel; Shilpan Pravinchandra;
(Maharashtra, IN) ; Thanawala; Nikita Kamlesh;
(Maharashtra, IN) |
Correspondence
Address: |
D Peter Hochberg;D Peter Hochberg Co. L.P.A.
1940 East 6th St. 6th Floor
Cleveland
OH
44114
US
|
Assignee: |
Arrow Coated Products Ltd.
Maharashtra
IN
|
Family ID: |
37600888 |
Appl. No.: |
11/918516 |
Filed: |
April 17, 2006 |
PCT Filed: |
April 17, 2006 |
PCT NO: |
PCT/IN2006/000133 |
371 Date: |
October 15, 2007 |
Current U.S.
Class: |
206/524.7 ;
206/459.5; 264/293; 264/299; 283/85; 428/172 |
Current CPC
Class: |
Y10T 428/24612 20150115;
B32B 9/02 20130101; B32B 2439/00 20130101; B05D 5/068 20130101;
B05D 7/52 20130101; B41M 3/14 20130101; B65D 65/46 20130101; B32B
27/10 20130101; B05D 5/066 20130101; B32B 7/02 20130101; B32B 15/08
20130101; B32B 2317/20 20130101; B32B 27/12 20130101; B32B 27/08
20130101; B32B 27/20 20130101 |
Class at
Publication: |
206/524.7 ;
206/459.5; 283/85; 428/172; 264/299; 264/293 |
International
Class: |
B65D 85/804 20060101
B65D085/804; B65D 85/00 20060101 B65D085/00; B42D 15/00 20060101
B42D015/00; B32B 3/00 20060101 B32B003/00; B28B 1/14 20060101
B28B001/14; B29C 59/00 20060101 B29C059/00 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 15, 2005 |
IN |
469/MUM/2005 |
Claims
1. A water soluble film (WSF) carrying at least one security
element incorporated in/on at least one layer, or between at least
two layers, or one or more of a combination of (a.) and/or
(b.).
2. A WSF, with or without one or more of a security feature
incorporated in said water soluble film, as a self adhesive web and
further converted into a printed seal with a barcode, and used for
securing the openings of a bottle meant to be opened by applying
water to said printed seal.
3. A package, comprising: at least one water soluble film (WSF)
incorporated with at least one security element; and at least one
material packed in said WSF incorporated with at least one security
element in such a way that when said packed material is intended to
be used, said film, as well as the content of said package, are
able to be dissolved or dispersed in water along with said at least
one security feature serving as a mark of identity.
4. The package according to claim 2, further comprising at least
one material packed with at least one piece of said WSF
incorporated with said at least one a security element in such a
way that when said packed material is intended to be used, said
WSF, as well as the contents, are dissolved or dispersed in water
along with said at least one security feature for serving as a mark
of identity.
5. A security element for use with a water soluble film of claim 1,
a water soluble film of claim 2 or a package of claim 3, wherein at
least one security element is of a nature selected from the group
consisting of an overt nature and a covert nature, is embedded,
entrapped or imparted in at least one layer of said WSF, wherein
said overt security element is easily detectable without the aid of
equipment and said covert security element is one which needs
equipment for detection.
6. The WSF according to claim 1, wherein: raw material for forming
said WSF film is at least one selected from the group consisting of
polyvinyl alcohol copolymer ionomer, polyvinyl alcohol homopolymer,
non-ionomeric polyvinyl alcohol polymer, polymethacrylate,
polyvinyl alchohol, polyacrylamide, polymethacrylamide, polyacrylic
acid, polymethacrylic acid, polyurethane, polyethyleneglycol,
polyvinylpyrrolidone, a proteinaceous binder, modified gelatin,
polysaccharide and water-soluble cellulose derivative; wherein said
WSF is selected from the group consisting of cold water soluble,
warm water soluble, hot water soluble and non soluble depending
upon the formulation; wherein cold water soluble comprises
solubility within a temperature range of 1.degree. C. to 30.degree.
C., warm water soluble comprises solubility within a temperature
range of 30.degree. C. to 50.degree. C. and hot water soluble
comprises solubility at a temperature above 50.degree. C.; and
wherein said WSF embedded/entrapped with said at least one security
element is in a form selected from the group consisting of sheet
form, roll form and pouch form.
7. The security element according to claim 7, wherein said at least
one security element is selected from the group consisting of
visible to the naked eye, light source readable, machine readable,
PCR (Polymerase Chain Reaction) detectable, and readable or
detectable by any mechanical, electrical or digital device.
8. The security element according to claim 7 comprising at least
one of: an object selected from the group consisting of optically
variable pigment, a multi-layer thin-film interference pigment, a
liquid crystal pigment, a holographic pigment, an interference
coated particle, a thermochromic pigment, a photochromic pigment, a
luminescent compound, a magnetic compound, an infrared-absorbing
compound, UV-absorbing compounds, magnetic compounds,
micro-engraved flake pigments, microtextured flake pigments,
forensic marking compounds, dyes, RFID taggants, nano particles,
nano tracers, security markers, printed security features,
barcodes, metallised fibres, metallised/demetallised texts, active
molecules and DNA taggants; and an object selected from the group
consisting of a hologram, a barcode, and a metallised/demetallised
microtext being printed or embossed on said WSF for forming a part
of said WSF.
9. A method for manufacturing a water soluble film (WSF) of claim
1, a water soluble film of claim 2 or a package of claim 3,
comprising the steps of: adding at least one or more of a security
element into at least one batch mixer containing batch solution of
the WSF to form a mixture; mixing the mixture thoroughly; and
feeding the mixture to primary or subsequent casting heads for
further processing for forming at least one security element
embedded WSF.
10. A method for manufacturing a water soluble film (WSF) of claim
1, a water soluble film of claim 2 or a package of claim 3
comprising following steps: (a) providing a formulation of a water
soluble film; (b) casting said formulation to form a WSF; (c) at
least one of spraying at least one desired security element on the
surface of at least one WSF or entrapping at least one desired
security element between at least two water soluble films to form a
film; and (d) drying the film which is coated or embedded with said
at least one security element.
11. The method according to claim 10, wherein said spraying step
comprises introducing said at least one security element at
primary, secondary, tertiary or subsequent sprayers.
12. A method manufacturing a water soluble film (WSF) of claim 1, a
water soluble film of claim 2, or a package of claim 3, comprising
the following steps: a. unwinding a liner from an unwinder of a WSF
casting machine having a primary casting head and a secondary
casting head; b. mixing at least one security element with a WSF
raw materials batch solution in a batch mixer; c. casting said WSF
on the liner at the primary casting head of the casting machine,
with said at least one embedded security element, metering said WSF
and smoothening said WSF; d. drying the WSF with said at least one
embedded security element in a primary dryer section; e. casting
another layer of WSF with or without at least one security element
being embedded in said another layer of WSF, at said secondary
casting head of the casting machine; f. drying the multilayered WSF
being embedded with said at least one security element in a
secondary dryer section; and g. guiding the film of step (f)
through a hot chilled cylinder and rewinding or splitting at the
rewinder.
13. A method of manufacturing a water soluble film (WSF) of claim
1, a water soluble film of claim 2, or a package of claim 3,
comprising the following steps: a. unwinding a liner from an
unwinder of a WSF casting machine having a primary casting head and
a secondary casting head; b. casting a WSF on the liner with or
without a security element at the primary casting head and metering
the cast film; c. spraying at least one security element by a
primary sprayer and smoothening the film; d. drying the WSF of step
(c) at a primary dryer section; e. casting another layer of WSF
with or without a security element at said secondary casting head;
f. drying the WSF with said at least one embedded security element
at the secondary dryer section; and g. guiding a multilayered WSF
with said at least one embedded security element of step (f)
through a hot cylinder for rewinding or splitting at a
rewinder.
14. A method of manufacturing a water soluble film (WSF) of claim
1, a water soluble film of claim 2, of a package of claim 3,
comprising the following steps: a. unwinding a liner from an
unwinder of a WSF casting machine having a primary casting head and
a secondary casting head; b. casting a WSF with or without at least
one security element and metering and smoothening, said WSF; c.
drying the WSF of step (b) in a primary dryer section; d. casting
another layer of WSF with or without at least one security element
at said secondary casting head; e. drying the WSF of step (d) in a
secondary dryer section for forming a semi-cured WSF; f. unwinding
a preformed WSF with or without a liner from another unwinder and
guiding it to meet the WSF from step (e); g. entrapping at least
one security element between the semi-cured WSF of step (e) and the
preformed WSF; and h. guiding the multilayered WSF with at least
one entrapped security element through a hot cylinder for rewinding
or splitting at a rewinder.
15. A method of manufacturing a water soluble film (WSF) of claim
1, a water soluble film of claim 2 or a package of claim 3,
comprising the following steps: a. unwinding two water soluble
films with or without liners from two unwinders; b. dispensing at
least one security element in between the two water soluble films;
and c. rewinding the multilayered WSF with said at least one
entrapped security element in a form selected from the group
consisting of a roll form, sheet form and fan-fold form.
16. The method according to claim 15, wherein said two water
soluble films are selected from the group consisting of cured water
soluble films, semi-cured water soluble films and uncured water
soluble films, and wherein said dispensing step comprises
dispensing said at least one security element in between the two
incoming cured, semi-cured or uncured water soluble films in a
vertical position or in a horizontal position.
17. The method according to claim 14, wherein the preformed water
soluble films are water soluble films produced by a process
selected from the group consisting of a cast process and an
extrusion process.
18. A method of manufacturing a water soluble film (WSF) being a
permutation or a combination of at least two methods of claim 9 to
claim 17.
19. The method according to claim 9, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in the primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one security element on the WSF with a method selected
from the group consisting of a hot stamping foil method and an
adhesive transfer method; and h. incorporating said at least one
overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
20. The method according to claim 19, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
21. The package according to claim 3, wherein said WSF incorporated
with said at least one security element that is slit into ribbons,
tapes, perforated tapes or perforated ribbons is inserted into said
package during the process of making a package for forming a part
of the package.
22. The method according to claim 9, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
23. The water soluble film according to claim 2, wherein said
barcode is selected from the group consisting of a 2D barcode and a
3D barcode.
24. The package according to claim 3, further comprising at least
one material packed with at least one piece of said WSF
incorporated with said at least one security element in such a way
that when said packed material is intended to be used, said WSF, as
well as the contents, are dissolved or dispersed in water along
with said at least one security feature for serving as a mark of
identity.
25. The WSF according to claim 6, wherein said proteinaceous binder
is gelatin, said modified gelatin is phthaloyl gelatin, said
polysaccharide is selected from the group consisting of starch, gum
arabic, pullulan and dextrin and said water-soluble cellulose
derivative is selected from the group consisting of methyl
cellulose, hydroxy propyl cellulose, hydroxy propyl methyl
cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose
and carboxy methyl cellulose.
26. The WSF according to claim 2, wherein: raw material for forming
said WSF film is at least one selected from the group consisting of
a polyvinyl alcohol copolymer ionomer, polyvinyl alcohol
homopolymer, non-ionomeric polyvinyl alcohol polymer,
polymethacrylate, polyvinyl alchohol, polyacrylamide,
polymethacrylamide, polyacrylic acid, polymethacrylic acid,
polyurethane, polyethyleneglycol, polyvinylpyrrolidone, a
proteinaceous binder, modified gelatin, polysaccharide and
water-soluble cellulose derivative; wherein said WSF is selected
from the group consisting of cold water soluble, warm water
soluble, hot water soluble and non soluble depending upon the
formulation; wherein cold water soluble comprises solubility within
a temperature range of 1.degree. C. to 30.degree. C., warm water
soluble comprises solubility within a temperature range of
30.degree. C. to 50.degree. C. and hot water soluble comprises
solubility at a temperature above 50.degree. C.; and wherein said
WSF embedded/entrapped with said at least one security element is
in a form selected from the group consisting of sheet form, roll
form and pouch form.
27. The WSF according to claim 26, wherein said proteinaceous
binder is gelatin, said modified gelatin is phthaloyl gelatin, said
polysaccharide is selected from the group consisting of starch, gum
arabic, pullulan and dextrin and said water-soluble cellulose
derivative is selected from the group consisting of methyl
cellulose, hydroxy propyl cellulose, hydroxy propyl methyl
cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose
and carboxy methyl cellulose.
28. The package according to claim 3, wherein: raw material for
forming said WSF film is at least one selected from the group
consisting of a polyvinyl alcohol copolymer ionomer, polyvinyl
alcohol homopolymer, non-ionomeric polyvinyl alcohol polymer,
polymethacrylate, polyvinyl alchohol, polyacrylamide,
polymethacrylamide, polyacrylic acid, polymethacrylic acid,
polyurethane, polyethyleneglycol, polyvinylpyrrolidone, a
proteinaceous binder, modified gelatin, polysaccharide and
water-soluble cellulose derivative; wherein said WSF is selected
from the group consisting of cold water soluble, warm water
soluble, hot water soluble and non soluble depending upon the
formulation; wherein cold water soluble comprises solubility within
a temperature range of 1.degree. C. to 30.degree. C., warm water
soluble comprises solubility within a temperature range of
30.degree. C. to 50.degree. C. and hot water soluble comprises
solubility at a temperature above 50.degree. C.; and wherein said
WSF embedded/entrapped with said at least one security element is
in a form selected from the group consisting of sheet form, roll
form and pouch form.
29. The package according to claim 28, wherein said proteinaceous
binder is gelatin, said modified gelatin is phthaloyl gelatin, said
polysaccharide is selected from the group consisting of starch, gum
arabic, pullulan and dextrin and said water-soluble cellulose
derivative is selected from the group consisting of methyl
cellulose, hydroxy propyl cellulose, hydroxy propyl methyl
cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl cellulose
and carboxy methyl cellulose.
30. The method according to claim 15, wherein the preformed water
soluble films are water soluble films produced by a process
selected from the group consisting of a cast process and an
extrusion process.
31. The method according to claim 19 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
32. The method according to claim any one of the claims 31, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
33. The method according to claim 10, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating a liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
34. The method according to claim 33 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
35. The method according to claim any one of the claims 34, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
36. The method according to claim 33, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
37. The method according to claim 12, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in the primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95..degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
38. The method according to claim 37 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
39. The method according to claim any one of the claims 38, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
40. The method according to claim 37, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
41. The method according to claim 13, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in the primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
42. The method according to claim 41 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
43. The method according to claim any one of the claims 42, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
44. The method according to claim 41, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
45. The method according to claim 14, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in the primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
46. The method according to claim 45 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
47. The method according to claim any one of the claims 46, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
48. The method according to claim 45, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
49. The method according to claim 15, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
50. The method according to claim 49 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
51. The method according to claim any one of the claims 50, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
52. The method according to claim 49, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
53. The method according to claim 18, further comprising the
following alternative steps: a. treating, untreating, coating or
uncoating said liner and wherein said liner is a material selected
from the group consisting of paper, film, foil and fabric; b.
wherein the temperature in the primary and secondary dryer sections
ranges from 50.degree. C. to 250.degree. C.; c. casting said WSF on
a conveyor instead of a liner; d. wherein the temperature of the
batch solution ranges from 10.degree. C. to 95.degree. C.; e.
stripping said liner immediately or after a self curing ageing
period ranging from 1 to 720 hours; f. mixing at least one security
element in printing ink and printing letters or graphics on said
WSF with said printing ink comprising said at least one security
element for forming a part of said WSF; g. imprinting or imparting
at least one overt security element on the WSF with a method
selected from the group consisting of a hot stamping foil method
and an adhesive transfer method; and h. incorporating said at least
one overt security element in the WSF by printing said at least one
overt security element on said WSF by a method selected from the
group consisting of inkjet, flexo, gravure and web offset.
54. The method according to claim 53 wherein the temperature in the
primary and secondary dryer sections ranges from 60.degree. C. to
200.degree. C., wherein the temperature of the batch solution
ranges from 13.degree. C. to 90.degree. C., and wherein said at
least one overt security element is selected from the group
consisting of a hologram.
55. The method according to claim any one of the claims 54, wherein
the temperature in the primary and secondary dryer sections ranges
from 75.degree. C. to 170.degree. C. and wherein the temperature of
the batch solution ranges from 15.degree. C. to 85.degree. C.
56. The method according to claim 53, further comprising the step
of slitting said WSF in a form selected from the group consisting
of ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons and cut sheets of any size.
57. The method according to claim 10, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
58. The method according to claim 12, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
59. The method according to claim 13, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
60. The method according to claim 14, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
61. The method according to claim 15, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
62. The method according to claim 18, wherein said WSF incorporated
with said at least one security element is in a form selected from
the group consisting of sheet form, roll form and pouch form.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a National Stage application of
International Application No. PCT/IN2006/000133, filed on Apr. 17,
2006, which claims priority of Indian patent application number
469/MUM/2005, filed on Apr. 15, 2005, both of which are
incorporated in their entiries herein.
BACKGROUND OF THE INVENTION
[0002] 1. Field of the Invention
[0003] The invention relates to a self destructive irreversible
security packaging water soluble film and a method for
manufacturing the same. The water soluble packaging film is
embedded with various security elements, which will get destroyed
irreversibly upon final usage as the whole package along with its
contents will dissolve in water. This process of self destruction
will control the duplication of the package or alteration of the
product inside the package.
[0004] 2. Description of the Prior Art
[0005] Securing a product like pesticides, agrochemicals,
cosmetics, etc have been in urgent need by the industry.
Simulation, alteration and duplication of genuine products have
always been rampant in today's world. No forceful solution has been
found to ensure that the security package itself gets used up every
time the end product/content is being consumed.
[0006] There have been several methods of securing a product by
printing security tracers, or by affixing varied OVD's, like
holograms, or colour shifting inks, etc. However, these are usually
on packages. Once the package is successfully opened, the original
product can be replaced by a duplicate and the resultant product
can be brand damaging and may lead to legal suits. Many times the
package is discarded after the contents are used and this same
package becomes a target for unlawful duplication.
[0007] There have been several attempts in the past to either
encase or laminate or package different security elements in films,
but none have proved fool proof and successful for such varied end
uses.
[0008] One such patent WO 2004048113 relates to a blister film
partially applied with a security feature. The application of the
security features ensues by detaching the security feature from a
supporting substrate, which is provided with a UV-curable
separating paint that is capable of being deep-drawn.
[0009] Here, the blister film with security feature can be tampered
or a discarded package can be reused for packaging a duplicate
product.
[0010] It is a long-standing need of the industry to develop
efficient and cost effective methods for the manufacture of a fool
proof security package for controlling piracy, simulation,
alteration or duplication of original products in diverse
applications and especially an unique all-encompassing packaging
film that is capable of irreversibly destroying itself.
Furthermore, the need for carriers that can selectively carry a
combination of materials with dissimilar properties, such as
miscible/immiscible, hydrophobic/hydrophilic security materials,
continues to elude the industry.
[0011] The present invention relates to a security package which
has built-in embedded security elements which form a part of the
package itself. This package is not needed to be opened, and is
self-destructing. The package itself is part of the product and
delivers the security features. After the final usage of the
package, the packaging material including the security elements are
irreversibly self destroyed. The security elements and genuineness
of the product/package can be verified, while it is on the shelf of
distribution as well as off the shelf. The security elements may be
traceable, if the need arises, even after the security package and
its contents have been consumed or delivered to the desired
location (e.g. soil, laundry) after the same has been dissolved in
water.
[0012] The invention addresses various problems and also reduces
costs and ensures that fraudsters are brought to book legally and
action taken against them. It also ensures that new products and
brands get their true value by ruling out any tampering,
duplication and alteration of the product.
SUMMARY OF THE PRESENT INVENTION
Object of Invention
[0013] The main object of the invention is to provide a self
destructive irreversible security packaging water soluble film to
prevent duplication, alteration and simulation of the packed
products.
[0014] Another object of the invention is to embed one or more
security elements with similar and/or dissimilar properties into
one or more layers of a WSF to form a multi-layered WSF embedded
with security features.
[0015] Yet another object of the invention is to provide the method
of manufacturing a self destructive irreversible security packaging
water soluble film wherein one or more security elements with
similar and/or dissimilar properties are embedded into one or more
layers of a WSF to form a multi-layered WSF embedded with security
elements.
[0016] In accordance with the present invention, self destructive
irreversible security packaging water soluble film (WSF) for
packages or the like is provided, comprising one or more layer(s)
of water soluble film and at least one built-in security element
embedded or entrapped or imparted in at least one layer of the WSF
to form a part of the security package which will irreversibly
destroy itself during final usage after dissolving or dispersing in
water.
[0017] In accordance with the present invention, a security
packaging WSF, wherein more than one security elements of similar
and/or dissimilar properties are embedded/entrapped or imparted in
one or more layers of the WSF is provided.
[0018] The WSF is single layered or multi-layered and made of raw
materials selected from polyvinyl alcohol copolymer ionomers,
polyvinyl alcohol homopolymer, non-ionomeric poly vinyl alcohol
polymer, polymethacrylate, polyvinyl alchohol, polyacrylamide,
polymethacrylamide, polyacrylic acid, polymethacrylic acid,
polyurethane, polyethyleneglycol, polyvinylpyrrolidone,
proteinaceous binders such as gelatin, modified gelatins such as
phthaloyl gelatin, polysaccharides such as starch, gum Arabic,
pullulan and dextrin and water-soluble cellulose derivatives such
as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl
methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl
cellulose, carboxy methyl cellulose, either alone or combinations
thereof.
[0019] The WSF is cold water soluble, warm water soluble, hot water
soluble or non soluble depending upon the formulation.
[0020] The security element(s) is/are of an overt nature or of a
covert nature and are selected from optically variable pigments,
multi-layer thin-film interference pigments, liquid crystal
pigments, holographic pigments, interference coated particles,
thermochromic pigments, photochromic pigments, luminescent
compounds, magnetic compounds, infrared-absorbing compounds,
UV-absorbing compounds, magnetic compounds, micro-engraved or
microtextured flake pigments, forensic marking compounds, dyes,
RFID taggants, nano particles, nano tracers, security markers
printed security features, like barcodes, metallised fibres,
metallised/demetallised texts, active molecules, DNA taggants and
the like.
[0021] The security element(s) is/are light source readable,
machine readable, PCR or otherwise readable by any mechanical,
electrical or digital device.
[0022] The security elements, like holograms, barcodes,
metallised/demetallised microtexts, are printed or embossed on the
WSF forming a part of the WSF.
[0023] The security packaging WSF can be converted into a self
adhesive web and further converted into a printed seal with a
barcode including 2D or 3D barcode forming self adhesive label/seal
used for securing the openings of a package or a bottle.
[0024] In accordance with the present invention, a method of
manufacturing a self destructive irreversible security packaging
WSF is provided comprising following steps: [0025] a. providing a
formulation of the water soluble film; [0026] b. casting
formulation to form a water soluble film; [0027] c.
embedding/entrapping at least one desired security element in the
formulation of the water soluble film prior to and/or after casting
the water soluble film; and [0028] d. drying the film with the
embedded security elements.
[0029] In accordance with the present invention, a method of
manufacturing self destructive irreversible security packaging WSF
comprising adding the security element(s) into at least one batch
mixer containing batch solution of the WSF, mixing thoroughly and
feeding to the primary or subsequent casting heads for further
processing in a known manner to achieve security element(s)
embedded WSF is also provided.
[0030] In accordance with the present invention, a method in which
the security element(s) is/are introduced at the primary,
secondary, tertiary or subsequent sprayers to achieve security
element(s) embedded WSF is also provided.
[0031] In accordance with the present invention, a method of
manufacturing security packaging WSF is also provided comprising
the following steps: [0032] a. unwinding a liner from an unwinder
of the WSF casting machine; [0033] b. mixing security element(s)
with the WSF raw materials batch solution in a batch mixer; [0034]
c. casting WSF on the liner at the primary casting head of the
casting machine, with embedded security element(s) and metering and
smoothening the same; [0035] d. drying the WSF with embedded
security element(s) in the primary dryer section; [0036] e. casting
of another layer of WSF with or without the security element(s)
embedded therein, at secondary casting head of the casting machine;
[0037] f. drying the multilayered WSF with embedded security
element(s) in a secondary dryer section; and [0038] g. guiding the
film of step (f) through hot chilled cylinder and rewinding or
splitting at the rewinder.
[0039] In accordance with the present invention, a method of
manufacturing security packaging WSF is also provided comprising
the following steps: [0040] a. unwinding a liner from an unwinder
of the WSF casting machine; [0041] b. casting of WSF on the liner
with or without the security element(s) at the primary casting head
and metering the cast film; [0042] c. spraying the security
element(s) by a primary sprayer and smoothening the film; [0043] d.
drying the WSF of step (c) at the primary dryer section; [0044] e.
casting another layer of WSF with or without the security
element(s) at a secondary casting head; [0045] f. drying the WSF
with embedded security element(s) at the secondary dryer section
and [0046] g. guiding the multilayered WSF with embedded security
element(s) of step (f) through a hot cylinder for rewinding or
splitting at a rewinder.
[0047] In accordance with the present invention, a method of
manufacturing security packaging WSF is also provided comprising of
the following steps: [0048] a. unwinding a liner from an unwinder
of a WSF casting machine; [0049] b. casting WSF with or without
security element(s) and metering and smoothening the same; [0050]
c. drying the WSF of step (b) in the primary dryer section; [0051]
d. casting another layer of WSF with or without the security
element(s) at a secondary casting head; [0052] e. drying the WSF of
step (d) in the secondary dryer section; [0053] f. unwinding a
preformed WSF with or without a liner from another unwinder and
guiding it to meet the WSF from step (e); [0054] g. entrapping
security element(s) between the semi-cured WSF of step (e) and the
preformed WSF; and [0055] h. guiding the multilayered WSF with
entrapped security element(s) through hot cylinder for rewinding or
splitting at a rewinder.
[0056] In accordance with the present invention, a method of
manufacturing security packaging WSF is also provided comprising
the following steps: [0057] a. unwinding two WSFs with or without
the liners from two unwinders; [0058] b. dispensing the security
element(s) in between the two WSF's; and [0059] c. rewinding the
multilayered WSF with entrapped security element(s) in roll form or
sheet form or fan-fold form.
[0060] The security element(s) is/are dispensed in between the two
incoming cured, semi-cured or uncured WSF's in a vertical position
or a horizontal position.
[0061] The preformed WSF's used here can be water soluble films
produced by a cast process or an extrusion process.
[0062] The liner used is treated or untreated and coated or
uncoated and is of paper, film, foil or fabric.
[0063] The WSF can also be cast on a conveyor instead of a
liner.
[0064] In accordance with the present invention, a method, in which
WSF is cold water soluble, warm water soluble, hot water soluble or
non soluble depending upon the formulation formed from raw
materials selected from polyvinyl alcohol copolymer ionomers,
polyvinyl alcohol homopolymer, non-ionomeric poly vinyl alcohol
polymer, polymethacrylate, polyvinyl alchohol, polyacrylamide,
polymethacrylamide, polyacrylic acid, polymethacrylic acid,
polyurethane, polyethyleneglycol, polyvinylpyrrolidone,
proteinaceous binders such as gelatin, modified gelatins such as
phthaloyl gelatin, polysaccharides such as starch, gum Arabic,
pullulan and dextrin and water-soluble cellulose derivatives such
as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl
methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl
cellulose, carboxy methyl cellulose, either alone or combinations
thereof is also provided.
[0065] In accordance with the present invention, a method, in which
the security element(s) is/are of overt or covert nature and is/are
selected from optically variable pigments, multi-layer thin-film
interference pigments, liquid crystal pigments, holographic
pigments, interference coated particles, thermochromic pigments,
photochromic pigments, luminescent compounds, magnetic compounds,
infrared-absorbing compounds, UV-absorbing compounds, magnetic
compounds, micro-engraved or microtextured flake pigments, forensic
marking compounds, dyes, RFID taggants, nano particles, nano
tracers, security markers printed security features like barcodes,
metallised fibres, metallised/demetallised texts, active molecules,
DNA taggants is also provided.
[0066] The WSF embedded with security element(s) can be slit in
ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons or cut sheets of any size.
[0067] The WSF embedded with security elements slit into ribbons,
tapes, etc can be inserted into a package during the process of
making a pouch. The ribbons, tapes, etc. will irreversibly destroy
itself during the final usage when the entire pouch along with its
contents will dissolve itself in water.
[0068] The WSF embedded/entrapped with security element(s) is in
sheet form or roll form or pouch form as per the end use.
[0069] In accordance with the present invention, a method of
manufacturing security packaging WSF comprising overt security
element(s) like holograms embedded into the WSF by directly
embossing a holographic plate on the WSF preferably with a liner
which can be detached after the process of embossing is also
provided.
[0070] The holograms are imprinted/imparted on the WSF with hot
stamping foil method or by an adhesive transfer method.
[0071] Other overt security element(s), like barcodes, microtexts,
are embedded in the WSF by printing them on the WSF itself by known
printing methods, such as inkjet, flexo, gravure, web offset and
the like.
[0072] In accordance with the present invention, a method of
manufacturing security packaging WSF comprising mixing of security
element(s) in the printing ink and printing letters or graphics on
WSF with the printing ink consisting security element(s), forming a
part of WSF itself is also provided.
BRIEF DESCRIPTION OF THE DRAWINGS
[0073] FIG. 1 is a schematic drawing of a method in accordance with
the present invention.
[0074] FIG. 2 is a schematic drawing of an alterantive method in
accordance with the present invention.
[0075] FIG. 3 is a schematic drawing of another alternative method
in accordance with the present invention.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0076] The invention will now be described in detail with reference
to the accompanying drawings showing various embodiments.
[0077] The materials of the WSF formulation are taken in the batch
reactor and mixed intimately to ensure complete dissolution in the
desired solvent.
[0078] The raw materials used for making the water soluble film are
selected from polyvinyl alcohol copolymer ionomers, polyvinyl
alcohol homopolymer, non-ionomeric poly vinyl alcohol polymer,
polymethacrylate, polyvinyl alchohol, polyacrylamide,
polymethacrylamide, polyacrylic acid, polymethacrylic acid,
polyurethane, polyethyleneglycol, polyvinylpyrrolidone,
proteinaceous binders, such as gelatin, modified gelatins such as
phthaloyl gelatin, polysaccharides, such as starch, gum Arabic,
pullulan and dextrin and water-soluble cellulose derivatives, such
as methyl cellulose, hydroxy propyl cellulose, hydroxy propyl
methyl cellulose, hydroxy propyl ethyl cellulose, hydroxy ethyl
cellulose, carboxy methyl cellulose either alone or combinations
thereof. However, these raw materials are by no means limiting. The
water soluble films can be cold water soluble, warm water soluble,
hot water soluble or non soluble depending upon the
formulation.
[0079] The preformed WSF used in the present invention can be a
cast film or an extruded film depending upon the end
application.
[0080] The security elements to be embedded into the WSF can be
selected from optically variable pigments, multi-layer thin-film
interference pigments, liquid crystal pigments, holographic
pigments, interference coated particles, thermochromic pigments,
photochromic pigments, luminescent compounds, magnetic compounds,
infrared-absorbing compounds, UV-absorbing compounds, magnetic
compounds, micro-engraved or microtextured flake pigments, forensic
marking compounds, dyes, RFID taggants, nano particles, nano
tracers, security markers, printed security features, like
barcodes, metallised fibres, metallised/demetallised texts, active
molecules, DNA taggants and the like.
[0081] Some of these security elements are of an overt nature or of
a covert nature which can be identified on the shelf or off the
shelf depending upon the security elements embedded in the WSF.
[0082] Covert security elements are the ones that are not visible
and will require a particular instrument for verifying the same.
Examples of covert security features include pigments, dyes, nano
particles, nano tracers, active molecules DNA taggants, and the
like.
[0083] A WSF package embedded with covert security elements, like
invisible inks or dyes, can be identified on the shelf under an
ultra violet (UV) (long wave) flouorescing light source.
[0084] A WSF package embedded with covert security elements, like
nano particles, can be identified on the shelf with the help of a
100.times. magnifying glass.
[0085] Some covert security elements can be identified off the
shelf only as the package has to be taken to a laboratory having
elaborate instruments and machines so as to read the embedded
covert security elements. There may be a need to destroy the
package in some cases, for example, certain pigments which are
Infra Red light readable with an algorithm of software chain
designed to read the reflected light and confirm the presence of
such pigments/dyes/security elements or magnetic field readable
pigments embedded in nano particles which give an audible beep when
the machine reader reaches the precise proximity, etc.
[0086] Overt security elements are the ones that are visible and
can be identified on the shelf almost instantaneously without the
need of an elaborate laboratory instruments or machines. Examples
of overt security elements include holograms, barcodes,
metallised/demetallised micro texts, RFID tags, and the like. These
kind of security elements are printed or embossed on the WSF and
will form a part of the WSF.
[0087] In one of the embodiments of this invention, the security
elements to be embedded in the WSF are added to the batch solution
and mixed thoroughly before feeding it to the casting head for
further processing. The materials that can be taken into the batch
mixing are selected from those that are water-soluble, sheer
insensitive, temperature resistant, like certain UV security dyes,
or machine readable pigments.
[0088] In another embodiment of this invention, the security
elements to be embedded in the WSF may optionally be introduced at
the primary, secondary, tertiary and subsequent sprayers and/or at
the second or subsequent casting heads fed from second and/or
subsequent batch mixers.
[0089] In another embodiment of the present invention, the security
elements to be embedded are dispensed in between incoming cured or
uncured WSF's.
[0090] In yet another embodiment of the present invention the
security elements of overt nature such as holograms, barcodes are
printed or embossed on the WSF.
[0091] Casting on the Liner for manufacturing WSF Embedded with
Security Features by Batch Mix Method Shown in FIG. 1 Comprising of
the Following Steps: [0092] i. unwinding of the liner (1) at the
unwinder (2) for the formation of WSF. The liner can be optionally
treated or untreated and coated or uncoated. The liners can be of
paper, film, foil or fabric, preferably of film, more preferably of
polyester film. The film can be in the range of 2 microns to 500
microns, preferably in the range of 10 microns-300 microns, more
preferably in the range of 12 microns-250 microns. The film liner
may be plain, embossed, gloss, matt, extrusion coated laminated or
release coated depending on the desired characteristics of the end
product. The paper liner that accept temperatures needed for
production of WSF, may be in the range of around 7 gms to around
500 gms, preferably a range of around 20 gm to around 300 gms, more
preferably in the range of around 60 gm to around 180 gms. The
paper liner may be plain, embossed, gloss, matt, extrusion coated
laminated or release coated depending on the desired
characteristics of the end product. The fabric liner is made of
cotton or synthetic yarns and solution coated, plain, embossed,
gloss, matte, extrusion coated or laminated based on the desired
end product properties. [0093] ii. Optional coating of the liner
with a primer via a primer coating station (3). [0094] iii. Casting
of the WSF on the liner at primary casting head (5) with embedded
security elements in the batch mix (4). The temperature of the
batch solution ranging from 10.degree. C. to 95.degree. C.,
preferably from 13.degree. C. to 90.degree. C., more preferably
from 15.degree. C. to 85.degree. C. [0095] iv. Metering of the cast
film at the primary casting head (5). [0096] v. Smoothening of the
film by passing it through smoothening rolls (7) with the embedded
security elements at the primary station. [0097] vi. Drying of the
WSF from step 3 in the primary dryer section (8). The temperature
in the dryer section ranging from 50.degree. C. to 250.degree. C.,
preferably from 60.degree. C. to 200.degree. C., more preferably
75.degree. C. to 170.degree. C. vii. Casting of another layer of
WSF with or without the security elements to be embedded at
secondary casting head (12). [0098] viii. Drying of the WSF from
step 7 in the secondary dryer section (13). The temperature in the
secondary dryer section ranging from 50.degree. C. to 200.degree.
C., preferably 60.degree. C. to 160.degree. C., more preferably
75.degree. C. to 170.degree. C. [0099] ix. The multi-layered WSF of
step 8 is guided through hot/chilled cylinder (20) for rewinding or
splitting at rewinder (21).
[0100] Optionally the above steps may also be carried out on a
rolling conveyor instead of a liner.
[0101] Casting on the Liner for Manufacturing WSF Embedded with
Security Features by Application of Spraying Method Shown in FIG. 1
Comprising of the Following Steps: [0102] i. Unwinding of the liner
(1) at unwinder (2) for the formation of WSF. Optionally a conveyor
can be used instead of a liner. [0103] ii. Optional coating of a
primer on the liner via a primer coating station (3). [0104] iii.
Casting of WSF with/without security elements to be embedded at
primary casting head (5). [0105] iv. Metering of the cast film at
primary casting head (5). [0106] v. Spraying of pre-measured
quantity of security elements to be embedded by primary sprayer
(6). [0107] vi. Smoothening of the film with the embedded security
elements at primary station by passing it through smoothening rolls
(7). [0108] vii. Drying of the WSF of the above step 5 at the
primary dryer section (8). The temperature in the dryer section
ranging from 50.degree. C. to 250.degree. C., preferably from
60.degree. C. to 200.degree. C., more preferably from 75.degree. C.
to 170.degree. C. [0109] viii. Casting of WSF with or without
security elements to be embedded at secondary casting head (12).
[0110] ix. Drying of the WSF from step 8 in the secondary dryer
section (13). The temperature in the secondary dryer section
ranging from 50.degree. C. to 200.degree. C., preferably from
60.degree. C. to 160.degree. C., more preferably from 75.degree. C.
to 170.degree. C. [0111] x. The multi-layered WSF of step 8 is
guided through hot/chilled cylinder (20) for rewinding or splitting
at the rewinder.
[0112] Similarly, one or more security elements can be embedded
into the WSF by the secondary, tertiary sprayers to form a
multi-layered WSF embedded with security elements.
[0113] Casting on the Liner for Manufacturing WSF Embedded with
Security Features by Online Entrapment Method as Shown in FIG. 1
Comprising of the Following Steps: [0114] i. Unwinding of the liner
(1) at the unwinder (2) for the formation of WSF, optionally a
conveyor can be used. [0115] ii. Optional coating of primer on the
liner via a primer coating station (3). [0116] iii. Casting of WSF
with/without security elements to be embedded at primary casting
head (5). [0117] iv. Metering of the cast film at casting head (5).
[0118] V. Smoothening of the film with/without the embedded
security elements at primary station by passing it through
smoothening rolls (7). [0119] vi. Drying of the WSF from step 5 in
the primary dryer section (8). The temperature in the dryers
ranging from 50.degree. C. to 250.degree. C., preferably from
60.degree. C. to 200.degree. C., more preferably from 75.degree. C.
to 170.degree. C. [0120] vii. Casting of WSF with or without the
security elements to be embedded at secondary casting head (12).
[0121] viii. Drying of the WSF from step 7 in the secondary
dryersection (13). The temperature in the dryers ranging from
50.degree. C. to 200.degree. C., preferably from 60.degree. C. to
160.degree. C., more preferably from 75.degree. C. to 140.degree.
C. [0122] ix. Unwinding of a pre-formed WSF with or without liner
from an unwinder (18) and guiding it through the guide rolls (17)
to meet the WSF from step 8 for entrapping of security elements to
be embedded. Both the liners along with WSF film, which may be
semi-cured WSF and the entrapments, may remain in the roll form or
sheet form in its original construction, stripping from casting
liner can be done immediately or after an self-curing ageing period
ranging from around 1 hrs. to around 720 hrs., prior to splitting
the liners so as to deliver the final WSF product with entrapped
materials. The preformed WSF used here can be a WSF formed by the
extrusion process. The performed WSF used here can be a WSF made by
a cast process or by extrusion process. [0123] x. The multi-layered
WSF of step 9 (ix.) may be guided through hot/chill cylinder (20)
for rewinding or splitting at the rewinder (21). Optionally offline
or online splitting between the WSF film and the liner can be
done.
[0124] Offline Vertical Entrapment Method for Manufacturing WSF
Embedded with Security Features as Shown in FIG. 2 Comprising of
the Following Steps: [0125] i. Unwinding of the preformed two water
soluble films with or without liner at the unwinders (22 and 28).
The preformed WSF used here can be a WSF formed by the extrusion
process. The performed WSF used here can be a WSF made by a cast
process or by extrusion process. [0126] ii. Dispensing of the
security elements (25) vertically in between two WSF's at guide
rollers (24 and 26). [0127] iii. Affixing of the two WSF's from
step 2 at the affixing rollers (23 and 27). [0128] iv. Rewinding
the multilayered WSF with security elements of step (iii) in roll
form or sheet form or fan-fold form. The casting liners can be
stripped immediately or after aging period of around 1 to around
720 hrs. or can be supplied all together and the end user may be
informed to strip the casting liner before use.
[0129] Offline Horizontal Entrapment Method for Manufacturing WSF
Embedded with Security Features as Shown in FIG. 3 Comprising of
the Following Steps: [0130] i. Unwinding of the two WSF films with
or without liner at the unwinders (30 and 36). The preformed WSF
used here can be a WSF formed by the extrusion process. [0131] ii.
Dispensing of the security elements (33) horizontally in between
two WSF's at guide rollers (32 and 34). [0132] iii. Affixing of the
two WSF's from step 2 at the affixing rollers (31 and 35). [0133]
iv. Rewinding the WSF with security elements, of step (iii) in roll
form or sheet form or fan-fold form. The casting liners can be
stripped immediately or after aging period of around 1 hour to
around 720 hours or can be supplied all together and the end user
may be informed to strip the casting liner before use.
[0134] The WSF embedded with security elements can be slit in
ribbons, tapes, perforated sheets, perforated tapes, perforated
ribbons or cut sheets of any size.
[0135] The WSF embedded with security elements slit into ribbons,
tapes, etc. can be inserted into a package during the process of
making a pouch. The ribbons, tapes, etc. will irreversibly destroy
itself during the final usage when the entire pouch along with its
contents will dissolve itself in water.
[0136] Such methods offers various product options such as: [0137]
1. Entrapped security elements in WSF with or without
liner/carrier. [0138] 2. Entrapped security elements in WSF in roll
form or pouch form. [0139] 3. Entrapped security elements in WSF in
roll form with perforations. [0140] 4. Entrapped security elements
in WSF in sheet form with multiple pouches. [0141] 5. All above
entrapped security elements in WSF with casting liner for the
consumer to remove after aging period of around 1 hour to around
720 hours.
[0142] A WSF film in the entrapment may be pre-embedded by a batch
mix or sprayer method or any other method explained above.
[0143] The above sequence may be repeated in multiple layers as per
the requirements of the end use of the multiple WSF's embedded with
security elements. Furthermore, this method also allows the
manufacture of a multilayered WSF embedded with security elements
using combinations of cold WSF's and hot WSF's in various
sequences. It also provides the options of using cured/uncured
films of CWSF's and HWSFus in any desired sequences
[0144] In accordance with one embodiment of the present invention,
the overt security elements like holograms can be embedded into the
WSF by directly embossing from a holographic plate/cylinder/shim on
WSF. The WSF used for this purpose is preferably with a liner.
[0145] Holograms can also be embedded in the WSF with the hot
stamping foil method or by a transfer method, wherein the
holographic film is coated with an adhesive and the adhesive side
of the holographic film is laminated to the WSF.
[0146] Other overt security elements, such as microtexts, barcodes,
can be embedded in the WSF by printing on the WSF itself. The
printing of microtexts, barcodes, etc. can be done by known
printing methods such as inkjet, gravure, flexo, web off-print and
the like.
[0147] All security elements and WSF shall irreversibly destroy
itself upon dissolution of the package in water during final usage
of the packed product.
[0148] As per the methods mentioned above, one or more security
elements having similar and/or dissimilar properties can be
embedded into one or more layers of the WSF to form a multi-layered
WSF. Also, one or more security elements can be synthesized and can
be added in the same layer of WSF. For example, DNA taggants can be
synthesized with florescent pigments for on-shelf checking of
presence of florescent pigment DNA. Actual DNA presence has to be
done off the shelf by a method of PCR readers.
[0149] Also, one or more security elements can be positioned at a
prerequisite place so as to come up in the same place in the final
package. This can be done by inserting a strip of HWSF/non soluble
hydrophilic film embedded with security elements into the web of
WSF during the process of casting the WSF. The other way of doing
this is zone coating of a WSF batch mix embedded with security
features onto a preformed WSF.
[0150] All security elements and WSF shall irreversibly destroy
itself upon dissolution of the package in water during final usage
of the packed product. Covert security features like DNA, can be
traced even after usage, for proof of usage of materials, by
checking its presence at the place where the security film was
destroyed such as soil or laundered clothes.
[0151] Security elements can also be mixed with printing inks and
then particular designs or letters can be printed on the WSF. Here,
the security elements will be present in the printed designs only
and can be identified on the shelf or off the shelf depending upon
the security elements embedded in the printing ink.
EXAMPLE 1
[0152] 10 ml of Tracetag DNA T7 TAG 1e*16 was added to 100 ml of
florescent UV ink and mixed thoroughly. This synthesized mixture of
security elements was then added to a 40 liter batch-mix of WSF
made out of the raw-materials mentioned herein before and mixed
thoroughly. The batch mix consisting DNA and florescent UV ink was
then cast on a liner as per the method described herein before to
form a self destructive irreversible security packaging WSF having
a thickness of 45 microns. This security film can be used for
various packaging purposes.
[0153] The presence of the florescent UV ink can be identified on
the shelf under a UV reading lamp but for identifying the DNA, the
package has to be carried to the laboratory and a separate process
of covert forensic PCR checking is needed. The remnants of DNA
taggants can also be checked after usage like in soil in case of
agrochemicals and on washed clothes in case of a detergent
package.
EXAMPLE 2
[0154] 100 ml of florescent UV ink was added to a 40 liter
batch-mix of WSF made out of the raw-materials mentioned herein
before and mixed thoroughly. The batch mix consisting florescent UV
ink was then cast on a liner as per the above process to form a
self destructive irreversible security packaging WSF having a
thickness of 35 microns. The same WSF with florescent UV ink was
embossed with holograms at prerequisite places. The holograms are
visible instantaneously while the presence of the florescent UV ink
can be identified under a UV reading lamp. Hence, here both the
security features can be identified on the shelf. During the
process of final useage of the package, the same shall dissolve,
disintegrate and shall irreversibly destroy itself.
EXAMPLE 3
[0155] RFID tags were printed at prerequisite places on a hot water
soluble film. This HWSF printed with RFID tags was then accurately
cut into thin strips of 20 mm width. A strip of HWSF printed with
RFID was then positioned and inserted into a web of CWSF during the
process of casting the CWSF. This security element can be read by
RFID machine reader which has been specifically designed to read
the outcome. During the process of final useage of the package, the
same shall dissolve, disintegrate and shall irreversibly destroy
itself.
[0156] It is now clear that the self destructive security packaging
film can be produced by methods mentioned herein before and that
the same can be used to secure various types of packages to ensure
that the rightful owner gets their earnings and the fraudsters are
dealt with properly by the legal/judiciary systems prevailing in
the respective countries.
[0157] Such security elements embedded WSFs are used for diverse
applications, such as, but not limited to, embedding such WSF into
a bed of pulp to make security paper, or to make a pouch or a web
or a slit tape or any article from such a security film to deliver
pesticides, seeds, drugs, vetinary products, agrochemicals,
perfumes, softeners, flavours, detergents, etc., so as to identify
the products while on the shelf as well as after consumption by
reading the reactions of the security elements while the package is
intact or reading the reactions of the security elements after the
package has been dissolved and traces of such security elements can
be observed on the used areas of the product which can be for
example soil in case of agrochemicals/seeds or garments in case of
detergents, softeners, etc.
[0158] A security element embedded WSF can also be converted into
self adhesive web and subsequentially converted into a printed seal
with a barcode, including a 2D or 3D barcode. This self adhesive
label/seal can be applied for example to secure the opening of a
package or a bottle with instructions to dissolve seal in water to
open the package.
[0159] What has been described above are preferred aspects of the
present invention. It is of course not possible to describe every
conceivable combination of components or methodologies for purposes
of describing the present invention, but one of ordinary skill in
the art will recognize that many further combinations and
permutations of the present invention are possible. Accordingly,
the present invention is intended to embrace all such alterations,
combinations, modifications, and variations that fall within the
spirit and scope of the appended claims.
* * * * *