U.S. patent application number 11/425879 was filed with the patent office on 2007-12-27 for non-slip header for paper roll, and methods.
Invention is credited to David Uitenbroek.
Application Number | 20070295628 11/425879 |
Document ID | / |
Family ID | 38872579 |
Filed Date | 2007-12-27 |
United States Patent
Application |
20070295628 |
Kind Code |
A1 |
Uitenbroek; David |
December 27, 2007 |
NON-SLIP HEADER FOR PAPER ROLL, AND METHODS
Abstract
A paper roll having a non-slip surface on the end(s) of the
roll, particularly large paper rolls such as those from a paper
making processes. A header, having a non-slip coating on one side
and an adhesive coating on the other side is applied to end(s) of
the rolled paper. Microencapsulated materials are one suitable
class of non-slip materials. The non-slip surface on the header
improves stability of the roll, when stood on end, during
transport, such as in cargo trucks.
Inventors: |
Uitenbroek; David; (Sun
Prairie, WI) |
Correspondence
Address: |
MERCHANT & GOULD PC
P.O. BOX 2903
MINNEAPOLIS
MN
55402-0903
US
|
Family ID: |
38872579 |
Appl. No.: |
11/425879 |
Filed: |
June 22, 2006 |
Current U.S.
Class: |
206/410 ;
206/413 |
Current CPC
Class: |
B65H 18/28 20130101;
B65B 25/148 20130101; B65D 85/66 20130101 |
Class at
Publication: |
206/410 ;
206/413 |
International
Class: |
B65D 85/00 20060101
B65D085/00 |
Claims
1. A wrapped roll or paper or other sheet material comprising: (a)
a roll of paper or other sheet material having a first end and an
opposite second end; (b) an outer wrap of material wrapped
circumferentially around the roll and crimped over the first end to
form crimped portions; (c) an outer header adhered to the crimped
portions, the outer header comprising a base sheet, an adhesive
coating on a first side of the base sheet against the crimped
portions, and a non-slip coating on a second side of the base
sheet.
2. The wrapped roll of claim 1 further comprising a second outer
header adhered to crimped portions on the second end of the roll,
the outer header comprising a base sheet, an adhesive coating on a
first side of the base sheet against the crimped portions, and a
non-slip coating on a second side of the base sheet.
3. The wrapped roll of claim 1, wherein the non-slip coating has a
static coefficient of friction such that, to move the roll, a force
of at least about 80% of the weight of the roll is needed.
4. The wrapped roll of claim 3, wherein the non-slip coating has a
static coefficient of friction of at least 0.5.
5. The wrapped roll of claim 3, wherein the non-slip coating has a
static coefficient of friction of at least 2.0.
6. The wrapped roll of claim 3, wherein the non-slip coating
comprises encapsulated adhesive material.
7. The wrapped roll of claim 3, wherein the base sheet comprises
kraft paper.
8. The wrapped roll of claim 7, wherein the non-slip coating
comprises encapsulated adhesive material at a weight of about 1 to
about 6.5 pounds per 1000 square foot ream.
9. The wrapped roll of claim 8, wherein the non-slip coating
comprises encapsulated adhesive material at a weight of about 5
pounds per 1000 square foot ream.
10. The wrapped roll of claim 3, wherein the adhesive is hot melt,
water based or solvent based.
11. A method of wrapping a roll of paper or other sheet material,
the method comprising: (a) circumferentially wrapping a wrap
material around a roll of paper or other sheet material, with a
portion of the wrap material extending axially past ends of the
roll; (b) folding the extending wrap material radially against the
ends of the roll to form crimped portions; and (c) adhering an
outer header to the crimped portions, the outer header comprising a
base sheet, an adhesive coating on a first side of the base sheet
against the crimped portions, and a non-slip coating on a second
side of the base sheet.
12. The method of claim 11, further comprising, prior to folding
the extending wrap material radially against the ends of the roll:
(a) applying an inner header to the ends of the roll.
13. The method of claim 11, wherein adhering an outer header to the
crimped portions comprises: (a) adhering an outer header to the
crimped portions having a non-slip coating with a static
coefficient of friction such that, to move the roll, a force of at
least about 80% of the weight of the roll is needed.
14. The method of claim 13, wherein the non-slip coating has a
static coefficient of friction of at least 0.5.
15. The method of claim 13, wherein the non-slip coating has a
static coefficient of friction of at least 2.0.
16. The method of claim 13, wherein the non-slip coating comprises
encapsulated adhesive material at a weight of about 1 to about 6.5
pounds per 1000 square foot ream.
17. The method of claim 13, wherein the non-slip coating comprises
encapsulated adhesive material at a weight of about 5 pounds per
1000 square foot ream.
18. A header for protecting rolls of paper and other sheet goods,
the header comprising: (a) a base sheet having a first surface and
an opposite second surface; (b) an adhesive coating on the first
surface; and (c) an encapsulated non-slip coating on the second
surface.
19. The header of claim 18 being circular and having a diameter of
at least 30 inches.
20. The header of claim 18, wherein the base sheet is kraft
paper.
21. The header of claim 20, wherein the kraft paper has a weight of
10-100 pounds per 1000 square foot ream.
22. The header of claim 18, wherein the non-slip coating has a
weight of about 1 to about 6.5 pounds per 1000 square foot
ream.
23. The header of claim 18, wherein the non-slip coating has a
weight of about 5 pounds per 1000 square foot ream.
24. The header of claim 18, wherein the adhesive is a hot melt,
water based or solvent based.
Description
BACKGROUND
[0001] The present disclosure is directed to paper products, in
particular, rolls of paper sheet goods. The disclosure relates to
header assemblies for the paper rolls.
[0002] Paper rolls, or other rolls of sheet material, usually have
the roll of paper or other sheet material covered with a protective
sheet of material (i.e., an outer wrap) wrapped around the
circumference of the roll. Any wrap material overhanging the ends
of the roll is usually crimped radially inwardly over the ends of
the roll. A header assembly is located internally and/or externally
of the crimped over projecting wrap portion at each end of the
roll. This protection system is often called a "roll wrap" or
variation thereof.
[0003] The roll wrap protects a roll of paper throughout the
distribution process. Once a roll of paper is formed, it is
desirable to wrap the paper roll sufficiently to protect the paper
roll until it is used so that the paper is not damaged.
[0004] Paper rolls, whether or not protectively wrapped, are
usually stored and shipped in a standing-on-end orientation.
Sometimes, depending on the size of the rolls, the rolls may be
stacked one on top of the other to reduce the floor space used. The
standing orientation of the rolls, whether or not stacked, is
unstable due to their size and weight, and is especially precarious
during shipment, when the location where the rolls are standing
(e.g., a truck bed, a boat hold, rail car, etc.) is moving.
[0005] Improvements in load securement are always desired for
transport.
SUMMARY
[0006] The present disclosure provides a header assembly, for use
with a paper roll or other rolls of sheet material, which is
particularly adapted to decrease the slippage of the rolls during
transport and to assist with load securement. Generally, the header
assembly provides sufficient friction that, in order to move the
roll having the header assembly, a force of at least about 80% of
the weight of the roll is needed.
[0007] In one particular embodiment, this disclosure is directed to
a header for use in protecting paper rolls. The header includes a
base sheet with a non-slip coating on a first side and a coating,
such as an adhesive coating, on the second side. The non-slip
coating can be formed from encapsulated material. In some
embodiments, the non-slip coating is activated, e.g., by the
application of heat and/or pressure, prior to attaching the header
to the paper roll or during the process of attaching the header to
the roll. The coating may be solvent based or may be a hot-melt
material, and may be activated prior to attaching the header to the
paper roll or during the process of attaching the header to the
roll.
[0008] In another particular embodiment, this disclosure is
directed to a paper roll having an outer header present on an end,
the outer side of the header having a non-slip coating thereon. The
outer header is adhered to the paper roll by way of an adhesive
coating present on the header on the opposite side of the non-slip
coating. The opposite end of the paper can have a similar non-slip
header thereon. Present between the outer header and the paper roll
may be an inner header.
[0009] In yet another particular embodiment, this disclosure is
directed to methods of protecting a paper roll by wrapping the roll
with an outer wrap and applying a header. The method includes
providing a paper roll, such as from a paper manufacturing process.
The roll is wrapped with an outer wrap, with a portion of the wrap
extending over an end of the roll. The wrap extension is crimped
against the end of the roll. A non-slip out header, having a
non-slip coating opposite a coating on a base sheet, is attached to
the end of the roll so that the coating adheres to the crimped wrap
extension.
[0010] If the header assembly includes an inner header, the inner
header is applied to the end of the roll prior to crimping the wrap
end.
[0011] These and other embodiments are described in the present
disclosure.
BRIEF DESCRIPTION OF THE DRAWING
[0012] FIG. 1 is a perspective view of a paper roll;
[0013] FIG. 2 is a partially exploded, perspective view of a paper
roll having an outer protective wrap, an inner header, and an outer
header according to the present invention; and
[0014] FIG. 3 is an enlarged side view of the outer header
according to the present invention.
DETAILED DESCRIPTION
[0015] The present disclosure is directed to providing a non-slip
surface on the end(s) of a paper roll, particularly large paper
rolls, such as those from a paper making processes. The size of
these rolls is often 30-60 inches in diameter, 30-100 inches in
height, weighing from less than a ton to as much as 5 tons,
although smaller and larger rolls are also common. Often used terms
for these rolls include trim, master and roll stock.
[0016] Referring to FIG. 1, a standard, unprotected trimmed roll of
paper is illustrated at reference numeral 10. Paper roll 10 has a
first end 12, an opposite second end 14, and an outer surface 15
that extends between ends 12 and 14. Paper may be wound on a core
or be wound in a coreless manner to form roll 10. The paper of
paper roll 10 may be any conventional or otherwise known paper, and
of any basis weight that can be wound into a roll, such as kraft
paper, newspaper, or other. The paper may be bleached or
unbleached, or colored. The paper may be in any stage of
processing, for example, ready for printing, ready for slitting,
already slit to the desired size, or ready for any other converting
process. Methods for forming paper roll 10 are well known.
[0017] Rolls 10 are often moved from one location to another for
storage. To protect rolls 10 during handling and storage, various
protective elements are added to roll 10.
[0018] FIG. 2 illustrates wrapped paper roll 10', which is roll 10
having various protective elements present. In particular, wrapped
roll 10' includes an outer protective wrap 20 that extends around
the circumference of paper roll 10. Outer protective wrap 20
preferably extends axially over ends 12, 14 of roll 10 to form
covered end 22 and covered end 24, respectively. The portion of
wrap 20 that extends over ends 12 to form covered end 22 is crimped
or folded to form portions 42. Covered end 24 has a similar overlap
of wrap 20, but is not seen in FIG. 2. Outer protective wrap 20 and
methods of applying to roll 10 to form crimped portions 42 over
covered ends 22, 24 are well known.
[0019] It is also well known to apply a header assembly to one or
both ends 22, 24 of wrapped roll 10', to protect the edge of the
rolled paper. The header assembly often includes an inner header,
positioned between the rolled paper and crimp portions 42, and an
outer header, positioned over crimp portions 42. In some
assemblies, only one header is present. FIG. 2 illustrates an inner
header 50 at end 22 present between the rolled paper and crimp
portion 42. A comparable inner header can be present at end 24.
[0020] The present disclosure provides a non-slip header assembly,
particularly, a non-slip outer header. The non-slip outer header of
the invention increases the coefficient of friction on the end of
roll 10, which in turn, improves stability of the roll, when stood
on the header end. For example, during transport, such as in a
cargo truck, a paper roll having the inventive outer header has
less tendency to slide on the truck floor, as compared to a roll
with a conventional header placed on the truck floor. One attempt
to decrease the sliding of paper rolls having conventional headers
has been to place a liner or friction mat material on the truck
floor to increase the coefficient of friction. The liner, however,
is large, bulky, and often difficult to handle. The liner also has
a tendency to bunch up, wrinkle, tear, or otherwise become damaged
by the fork trucks that load the paper rolls and by the paper rolls
slipping while on the liner. Additionally, some liners create a
trip hazard for persons walking on the liner. The non-slip header
assembly of this invention provides improvements over known
products and methods.
[0021] As provided above, the non-slip header assembly of this
invention increases the coefficient of friction on the end of roll
10 by provided a non-slip surface on the end of roll 10. FIG. 2
illustrates wrapped roll 10' having the non-slip header assembly of
the present invention.
[0022] The present invention includes outer header 100, having a
non-slip surface. In FIG. 2, outer header 100 is illustrated
removed from end 22, to facilitate understanding of the placement
of outer header 100 on wrapped roll 10'. Header 100 is typically
circular, to match the shape of end 22 of the paper roll. The outer
perimeter of header 100 may extend short of the outer perimeter of
end 22 and wrap 20, thus leaving exposed a portion of crimped
portions 42, or, outer header 100 may cover the entire end 22 and
crimped portions 42.
[0023] The details of outer header 100 are illustrated in the
enlarged view of header 100 in FIG. 3. Header 100 includes a base
sheet 110 having a first surface 112 and an opposite second surface
114. A non-slip coating 120 is present on first surface 112. When
installed on roll 10, header 100 is positioned so that first
surface 112 and non-slip coating 120 are exposed; that is, first
surface 112 and non-slip coating 120 are on the exterior of roll
10.
[0024] Base sheet 110 can be any suitable material but is usually a
paper product, such as kraft paper or paperboard. Polymer based
materials, which may be a laminate of paper and polymer, or all
polymer, are also suitable materials for base sheet 110. Base sheet
110 may be flat or may be a corrugated sheet. Although one example
of a suitable base sheet 110 is 42 pound unbleached kraft paper
(i.e., a 1000 square foot ream weighs 42 pounds), base sheets of
10-100 pounds per 1000 square foot ream could be used. In some
embodiments, base sheet 110 has a basis weight of 15-70 pounds per
1000 square foot ream. A 69 pound kraft paper is another example of
a suitable base sheet 110.
[0025] Non-slip coating 120 can be any coating of material that
provides a static coefficient of friction of at least 0.5 and
preferably at least about 1.0. In some embodiments, the static
coefficient of friction is at least 2.0, and even at least 3.0. As
a comparative, untreated or uncoated kraft paper, which is
typically used as an outer header, has a static coefficient of
friction in the range of 0.3-0.5, but is usually about 0.4. Static
coefficient of friction can be measured, for example, using TAPPI
test method 816 entitled "Coefficient of Static Friction of
Corrugated and Solid Fiber Board (Horizontal Plane Method)".
[0026] Generally, the static coefficient of friction provides
sufficient friction that, to move roll 10' having header 100 with
non-slip coating 120, a force of at least about 80% of the weight
of roll 10' is needed. For example, at least 800 lbs force is
needed to move (e.g., slide) a 1000 lb roll of paper; in many
embodiments, at least 85%, i.e., 850 lbs force, is desired. It is
understood that larger and smaller rolls would require greater and
lesser amounts of force, but that the percentage would be the
same.
[0027] Although various materials can be used to increase the
static coefficient of friction, encapsulated materials (which
includes microencapsulated materials) is one class of suitable, and
preferred, materials. As a simple description, encapsulated
materials have a shell or capsule surrounding a frictional
material, such as a polymeric material.
[0028] To form header 100, encapsulated adhesive material is
applied to base sheet 110, i.e., to first surface 112, and then
activated, e.g., burst, by the application of heat and/or
pressure.
[0029] Encapsulated materials and methods for making them are well
known. For example, U.S. Pat. Nos. 2,730,456, 2,800,457, and
2,800,458 describe methods of capsule formation. Other useful
methods for microcapsule manufacture are described in U.S. Pat.
Nos. 4,001,140, 4,081,376 and 4,089,802, which describe a reaction
between urea and formaldehyde; U.S. Pat. No. 4,100,103 describes a
reaction between melamine and formaldehyde; British Patent No.
2,062,570 describes a process for producing microcapsules having
walls produced by polymerization of melamine and formaldehyde in
the presence of a styrenesulfonic acid. Microcapsules are also
taught in U.S. Pat. Nos. 2,730,457 and 4,197,346. Microcapsules
from urea-formaldehyde resin and/or melamine formaldehyde resin are
disclosed in U.S. Pat. Nos. 4,001,140, 4,081,376, 4,089,802,
4,100,103, 4,105,823, and 4,444,699, and alkyl acrylate-acrylic
acid copolymer capsules are taught in U.S. Pat. No. 4,552,811. U.S.
Pat. No. 4,622,267 discloses an interfacial polymerization
technique, and a similar technique is disclosed in U.S. Pat. No.
4,547,429. Numerous other methods of encapsulation are described in
U.S. Pat. No. 4,552,811, U.S. Pat. Nos. 4,001,140, 4,087,376, and
4,089,802, U.S. Pat. No. 4,100,103, U.S. Pat. No. 4,221,710, and in
U.S. Pat. Nos. 4,251,386 and 4,356,109. Encapsulation using gelatin
is also well known; see for example, U.S. Pat. Nos. 2,800,457 and
2,800,458 and U.S. Pat. No. 2,730,456. Each patent named is
incorporated herein by reference to the extent each provides
guidance regarding encapsulation processes and materials.
[0030] Other classes of suitable materials for non-slip coating 120
include those generally described low-tack adhesives or
pressure-sensitive adhesives, which could be encapsulated.
[0031] The encapsulated material may be water based or solvent
based. In some embodiments, the encapsulated material may be a 100%
solids material.
[0032] One particular example of an encapsulated material is
commercially available from Press Color, Inc. of Appleton, Wis.
under the designation "Stop Slip", which is generally described as
a thermo expandable waterborne ink.
[0033] Non-slip coating 120 may include filler materials or other
additives. For example, silica, talc, calcium carbonate or other
particulate material could be added to non-slip coating 120 to
increase the static coefficient of friction.
[0034] The materials that form non-slip coating 120 can be applied
to first surface 112 by conventional coating processes, such as by
flood coating, saturation coating (e.g., with a metering rod),
knife coating, gravure coating, reverse angle gravure coating,
printing, and the like, and then appropriately dried or cured. A
size coat or other undercoating may be present on first surface 112
prior to applying non-slip coating 120. Coating speeds for non-slip
coating 120 of 100 ft/min to even 1000 ft/min can be obtained.
Coating 120 may be a solid coating across header 100 or may be a
pattern coating. Whether a solid or pattern coating, it is
preferred that the density or weight of the material is generally
consistent across base sheet 110.
[0035] The amount of material applied to first surface 112 is an
amount sufficient to provide a non-slip coating 120 having a weight
of about least 1 pounds per 1000 square foot ream, often at least
about 2 pounds per 1000 square foot ream, but generally no more
than about 15 pounds per 1000 square foot ream. Although sample
ranges of coating weights for non-slip coating 120 are provided, it
is understood that any weight of coating 120 suitable to obtain the
desired coefficient of friction would be suitable. One exemplary
weight range is about 3-6.5 pounds per 1000 square foot ream, and
one exemplary weight is about 5 pounds per 1000 square foot
ream.
[0036] The activation of the non-slip properties of the coating
materials, e.g., the encapsulated material, to form the increased
friction surface, can be done before or after applying header 100
to wrapped roll 10'. Encapsulated materials are preferred for the
reason that they are inactive (e.g., non-adherent) until activated,
whereas pressure sensitive adhesives and low-tack adhesives are
typically adherent upon drying of the material. Many encapsulated
materials can be activated by the application of heat and/or
pressure.
[0037] Returning to the drawing of header 100 in FIG. 3, on second
surface 114, header 100 can include an attachment mechanism, such
as coating 140, which can be an adhesive coating. Coating 140
provides an attachment mechanism to hold header 100 onto second end
12 of roll 10. Typically, coating 140 attaches to end 22 on top of
crimped portions 42. Coating 140 may also attach header 100 to any
inner header 50 that is positioned between crimped portions 42 of
protective wrap 20 and the paper roll. For rolls lacking inner
header 50, coating 140 may attach header 100 to crimped portions 42
and to the edge of the rolled paper.
[0038] In some designs, coating 140 provides additional features to
header 100 in addition to providing an adhesive surface. For
example, coating 140 may increase the physical stability of header
100, by providing a moisture-barrier that inhibits seepage of
moisture into base sheet 110. Additionally or alternatively,
coating 140 may inhibit moisture passage into the paper roll via
the roll edge.
[0039] Coating 140 can be any coating of material that provides
sufficient adhesive properties to hold header 100 onto wrapped roll
10'. Numerous adhesives are suitable for the application. The
adhesive material may be water based or solvent based, or may be a
100% solids material, often referred to as a hot-melt. U.S. Pat.
No. 6,505,459 describes the use of a hot melt adhesive for applying
an outside header. The material may be a thermoplastic, a
thermoset, or a blend thereof. Exemplary thermoplastics that can be
used to provide a heat seal include polylactide, polyethylene,
polypropylene, and polyvinyl. Exemplary patents describing the use
of thermoplastics for heat sealing include U.S. Pat. No. 5,090,566
and U.S. Pat. No. 4,820,374. The material may be radiation (e.g.,
UV) curable, moisture-curable, condensation-reaction curable, or
merely cured or dried by the removal of solvent. The adhesive may
be high-tack, low-tack, pressure-sensitive, a self-seal (i.e., it
only readily sticks to itself) or any other level of adhesive that
is sufficient to hold header 100 onto crimped portions 42 and
wrapped roll 10'. Examples of broad classes of suitable adhesives
include rubber-based adhesives, acrylate-based adhesives, and
silicone-based adhesives. One example of a suitable adhesive for
coating 140 is polyethylene, especially low density polyethylene
(LDPE). Another example of a suitable adhesive for coating 140 is a
self seal adhesive, such as one of those available under the name
"Resyn Self Seal" from National Starch, "Nip-Weld" and "Turbo Seal"
from Bostic, and "Robond" from Rohm & Haas. If coating 140 is a
self seal adhesive, it is preferred that inner header 50 also
includes that adhesive, to facilitate adherence of header 100.
[0040] The adhesive for coating 140 can be applied to second
surface 114 by conventional coating processes, such as by flood
coating, saturation coating (e.g., with a metering rod), knife
coating, gravure coating, reverse angle gravure coating, printing,
and the like, and then appropriately dried or cured. Coating 140
may be a solid coating across header 100 or may be a pattern
coating. Coating 140 may be present across the entire area of
second surface 114 or be limited. For example, coating 140 could be
present as an annular coating configured to engage with crimped
portions 42, leaving the center of second surface 114 uncoated, to
not adhere, for example, to the edge of the paper when no inner
header 50 is present.
[0041] The amount of adhesive applied to second surface 114 should
be an amount sufficient to adhere header 100 to crimped portions 42
and any other surfaces.
[0042] Header 100 can be applied to roll 10 by generally any method
for applying conventional header elements. Examples of available
equipment or lines that can be used to wrap roll 10 to provide
wrapped roll 10' are available from companies such as Lamb, Valmet,
and Symatec. Care should be taken, however, to assure that when
applying header 100 to roll 10, header 100 is positioned so that
non-slip coating 120 is on the exterior and coating 140 is against
the paper roll. A liner or slip sheet may be positioned between
stacked headers 100 to inhibit coating 140 from sticking to the
adjacent non-slip coating 120.
[0043] One exemplary method for producing header 100 is described
below.
[0044] A web of material, i.e., material that forms base sheet 110,
is provided to a coater or coating line. Typical widths for the
base sheet web are 15 to 80 inches, although webs as wide as 140
inches could be used. A preferred web is unbleached 42 pound kraft
paper.
[0045] Encapsulated adhesive material, to form non-slip coating
120, is applied to first surface 112 of the web. An aqueous mixture
of about 45% solids encapsulated material, available from Press
Color, Inc. of Appleton, Wis. under the designation "Stop Slip", is
applied to first surface 112 by a saturation coating technique
using a smooth applicator roll and metering rod positioned below
the web surface being coated. The aqueous mixture is transferred
from the applicator roll to the surface 112 at a thickness that,
when dried, provides a weight of about 15 pounds per ream.
[0046] The aqueous mixture is dried by passing the coated web over
two sequential heated can rollers and under one heated can roller,
to provide a web temperature of about 190.degree. F. At this
temperature, the mixture is dried and the encapsulated material is
activated, by bursting of the capsules. In preferred embodiments,
the burst material does not stick to various process equipment
(e.g., platen) during the process of putting the header onto the
roll, which is described below.
[0047] Coating 140 may be previously applied, i.e., present on
second side 114 of the web, prior to feeding the web into the
coater applying non-slip coating 120. In another embodiment,
coating 140 may be applied to the web simultaneously, i.e., on the
same coating line, as non-slip coating 120. In yet another
embodiment, coating 140 may be subsequently applied on a separate
coating line.
[0048] After non-slip coating 120 and coating 140 are present on
the web, the web is die cut to circles of the desired size.
[0049] One exemplary method for producing wrapped roll 10' is
described below.
[0050] Roll 10 is provided by conventional paper making processes.
Roll 10 is wrapped with outer wrap 20 by conventional roll wrapping
processes. Various equipment designs are available for wrapping
paper rolls. Examples of available wrapping systems or lines that
can be used to wrap roll 10 to provide wrapped roll 10' are
available from companies such as Lamb, Valmet, and Symatec. Also,
see U.S. Pat. No. 6,505,459 to Ruohio et al., U.S. Pat. No.
5,642,600 to Hooper et al., U.S. Pat. No. 4,303,462 to Karr, and
U.S. Pat. No. 5,960,608 to Ohtonen for various wrapping
systems.
[0051] After wrapping, a portion of outer wrap 20 extends over ends
12, 14 of roll 10. This extension of wrap 20 is folded or crimped
to provide crimped portions 42.
[0052] In some processes, an inner header 50 is applied to end 22
and the opposite end of the roll prior to crimping wrap 20 to form
crimped portions 42.
[0053] Header 100, and optionally inner header 50, can be applied
by conventional wrapping equipment, such as by units that use
vacuum to apply header 100. Usually, a heated platen is used to at
least partially activate coating 140 and hold header 100 onto the
roll end. Care should be taken, however, to assure that when
applying header 100 to roll 10, header 100 is positioned so that
non-slip coating 120 is on the exterior and coating 140 is against
the paper roll.
[0054] For some embodiments, the heated platen used to apply header
to the roll also bursts the encapsulated material, thus activating
the non-slip material.
[0055] After application of header 100, wrapped roll 10' is stood
on end, so that non-slip coating 120 contacts the ground or other
surface on which wrapped roll 10' is positioned.
[0056] The above specification, examples and data provide a
complete description of the manufacture and use of the composition
of the invention. Since many embodiments of the invention can be
made without departing from the spirit and scope of the invention,
the invention resides in the claims hereinafter appended.
* * * * *