U.S. patent application number 11/270709 was filed with the patent office on 2006-05-11 for opening and/or closing device for a sealed packaging, intended in particular for the preservation of agro foodstuffs.
This patent application is currently assigned to LC 2, SARL Unipersonnelle. Invention is credited to Laurent Chaude.
Application Number | 20060096661 11/270709 |
Document ID | / |
Family ID | 34950630 |
Filed Date | 2006-05-11 |
United States Patent
Application |
20060096661 |
Kind Code |
A1 |
Chaude; Laurent |
May 11, 2006 |
Opening and/or closing device for a sealed packaging, intended in
particular for the preservation of agro foodstuffs
Abstract
The opening/closing device of a sealed packaging, intended in
particular for the preservation of agro foodstuffs, includes a
piercing device, as well as a plugging structure through which the
packaging can be pierced. The packing can be re-closed after
piercing, after removing the piercing device so as to avoid any
contact between the inside medium of the packaging and the
surrounding medium. The plugging structure is formed of two
elements, arranged at the wall of the packaging, and slaved to one
another, whereas the first element is fitted with a thermoplastic
material which may be re-closed after piercing, the second element
having a spreading mechanism to create a vacuum chamber at the
piercing device.
Inventors: |
Chaude; Laurent; (Pont
L'Eveque, FR) |
Correspondence
Address: |
John S. Egbert;Egbert Law Offices
7th Floor
412 Main Street
Houston
TX
77002
US
|
Assignee: |
LC 2, SARL Unipersonnelle
Pont L'Eveque
FR
|
Family ID: |
34950630 |
Appl. No.: |
11/270709 |
Filed: |
November 9, 2005 |
Current U.S.
Class: |
141/329 |
Current CPC
Class: |
B65D 17/00 20130101;
B65B 31/08 20130101; B65D 51/002 20130101 |
Class at
Publication: |
141/329 |
International
Class: |
B65B 1/04 20060101
B65B001/04 |
Foreign Application Data
Date |
Code |
Application Number |
Nov 9, 2004 |
FR |
04/11935 |
Claims
1. An opening/closing device of a sealed packaging, intended in
particular for preservation of agro foodstuffs, comprising: a
piercing means; and a plugging means through which the packaging is
pierced, said packaging being re-closable after piercing, after
removing the piercing means so as to avoid any contact between an
inside medium of the packaging and a surrounding medium, wherein
said plugging means is comprised of two elements, arranged at a
wall of said packaging, and slaved to one another, a first element
being fitted with a thermoplastic material re-closable after
piercing, a second element having a spreading means to create a
vacuum chamber at the piercing means.
2. A device according to claim 1, wherein said first element is
placed on an external side of the packaging and said second element
is placed on an internal side, and wherein both elements sandwich
the wall of said packaging therebetween or attach to an internal or
external face of said wall.
3. A device according to claim 1, wherein said two elements are
independent and slaved to one another by gluing or welding or
clamping.
4. A device according to claim 1, wherein said plugging means is
comprised of a single monobloc-type part attached to the internal
or external face of the wall of the packaging.
5. A device according to claim 1, wherein said second element has a
closed bottom and at least one hole on a lateral wall thereof.
6. A device according to claim 1, wherein said plugging means is
comprised of two elements in a form of a cage, said cage having a
diameter ranging between 15 mm and 25 mm and thickness ranging
between 8 and 15 mm.
7. A device according to claim 1, wherein said plugging means is
comprised of a first element, in a form of a cage, having an
external skid cooperating with the wall of the packaging and a
hollow zone defined by a wall in order to receive a disk.
8. A device according to claim 1, wherein said plugging means is
comprised of a second element, in a form of a cage, having an
external skid cooperating with the wall of the packaging and at
least one lateral port, the cage forming a stop for the piercing
means and a non-compressible internal volume.
9. A device according to claim 1, wherein the plugging means, in a
form of a cage, having an external skid cooperating with the wall
of the packaging, is further comprised of a front opening, the cage
being able to contain a disk of said thermoplastic material, the
front opening being able to authorize insertion of said disk and
maintenance thereof, crimped in said cage.
10. A device according to claim 1, wherein said piercing means is
comprised of a needle having a port at a part piercing the wall of
said packaging.
11. A packaging fitted with the plugging means according to claim
1.
12. An installation designed for implementing a packaging according
to claim 11, further comprising: at said piercing means, an
injection and/or suction means enabling to inject and/or to suck in
liquids, semi-liquids and gases, such as nitrogen and/or steam, in
and/or outside the packaging preventing any contact between tho
inside medium of the packaging and the surrounding medium.
13. An installation designed for implementing a packaging according
to claim 11, further comprising: at said piercing means, a sensor
enabling to obtain data on the inside medium of the packaging while
preventing any contact between the inside medium of the packaging
and the surrounding medium.
Description
RELATED U.S. APPLICATIONS
[0001] Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
[0002] Not applicable.
REFERENCE TO MICROFICHE APPENDIX
[0003] Not applicable.
FIELD OF THE INVENTION
[0004] The present invention concerns an opening and/or closing
device for a sealed packaging, intended in particular for the
preservation of agro foodstuffs.
BACKGROUND OF THE INVENTION
[0005] Although provided more particularly for sealed packagings
intended for the preservation of agro food stuffs, it may also be
used for packaging any other type of product.
[0006] Applications wherein opening and closing a packaging require
particular precautions aiming in particular at avoiding any contact
between the contents or the inside medium of the packaging and the
surrounding medium, are known.
[0007] Among such applications, opening and closing a sealed
packaging intended for the preservation of agro foodstuffs after
thermal treatment thereof may be mentioned. It is known that after
thermal treatment, certain foodstuffs ooze a baking juice or
exudate which ought to be removed from the packaging before
marketing the product. It is also known that it may prove useful,
if not necessary, to check during or after the thermal treatment
certain data such as temperature or microbial composition of the
product contained in the packaging.
[0008] For both reasons aforementioned, and also for other reasons
such as possible injection of additional products into the
packaging, it is necessary to still be able to access the products
contained in the packaging.
[0009] Consequently, taking into account the nature of the
products, it is not possible for sanitary reasons to let the inside
medium of the packaging contact the surrounding medium when
opening, then to make the packaging airtight again when
closing.
[0010] Currently, a solution to remedy this problem consists in a
first step in opening the sealed packaging and in extracting the
products, then in reconditioning said products in a second sealed
packaging. As regards the monitoring of data such as the
temperature on the product contained in the packaging, the
technique used consists in taking a reference sample which is
perforated and whereof the content is probed, serving as a
reference for the other packagings, but which cannot be reused,
since it has been perforated and has contacted the surrounding
medium, and consequently said product will be wasted.
[0011] Among the applications requiring particular precautions when
opening and closing packagings, other applications may be
mentioned, such as in the medical field, the suction of a pre-set
dose of liquid contained in a vial by means of a syringe enabling
notably to avoid any contact between the sucked-in liquid and the
surrounding medium. In such an application, the packaging is
perforated by a syringe needle and said dose is sucked in entirely
into said syringe, thereby avoiding any contact between the
sucked-in liquid and the surrounding medium, and the empty vial is
then thrown away.
[0012] This solution exhibits however several shortcomings and in
particular the packaging cannot be re-used, which causes generally
costly product losses.
[0013] Besides, it has been known since the document EP-1.312.556
an opening/closing device of a sealed packaging, intended in
particular for the preservation of agro foodstuffs, which remedies
the shortcomings aforementioned and which enables to open, then to
close the sealed packaging, without the inside medium contacting
the surrounding medium. According to such document, the
opening/closing device comprises means for piercing the wall of
said packaging and plugging through which the packaging can be
pierced. Said plugging means may be re-closed after piercing, after
removing the piercing means so as to avoid any contact between the
inside medium of the packaging and the surrounding medium.
[0014] However, such device also exhibits certain shortcomings, in
particular as regarding the withdrawal of the liquid and the risk
of perforating the packaging.
[0015] The aim of the present invention, which an improvement on
the invention described in the document EP-1.312.566, is to provide
an opening and/or closing device for a sealed packaging, intended
in particular for preservation of agro foodstuffs, which remedies
the shortcomings aforementioned and enables to withdraw or to
inject liquids, semi-liquids or gases, such as nitrogen and/or
steam, outside or inside the packaging, without the inside medium
contacting the surrounding medium.
[0016] Another aim of the present invention is to provide an
opening and closing device for a sealed packaging, intended in
particular for preservation of agro foodstuffs, which enables to
obtain data on the inside medium of the packaging, without the
inside medium contacting the surrounding medium.
[0017] Another aim of the present invention is to provide a
reliable opening/closing device and whereof the implementation is
easy, while avoiding notably any undue risks of perforation.
[0018] Other aims and advantages of the present invention will
appear in the following description. solely given by way of example
and without being limited thereto.
BRIEF SUMMARY OF THE INVENTION
[0019] According to the present invention, the opening/closing
device of a sealed packaging, intended in particular for the
preservation of agro foodstuffs, exhibiting piercing means, as well
as plugging means, through which the packaging can be pierced, and
which can be re-closed after piercing, after removing the piercing
means so as to avoid any contact between the inside medium of the
packaging and the surrounding medium, is characterized in that said
plugging means are formed of two elements, arranged at the wall of
said packaging, and slaved to one another, whereas the first
element is fitted with a thermoplastic material which may be
re-closed after piercing, the second element having spreading means
to create a vacuum chamber at the piercing means.
[0020] The present invention also concerns a packaging fitted with
the plugging means described in the present invention.
BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS
[0021] The invention will be described better when reading the
following description in conjunction with the appended
drawings.
[0022] FIG. 1 shows a schematic view of an embodiment of the
opening/closing device of a sealed packaging according to the
invention.
[0023] FIGS. 2 to 4 illustrate sectional views of the different
opening/closing steps of the sealed packaging.
[0024] FIG. 5 shows an exploded sectional view of the
opening/closing device of the present invention prior to be slaved
to the sealed packaging to be fitted.
[0025] FIG. 6 shows a sectional view along the axis VI-VI of FIG.
5.
[0026] FIG. 7 shows a sectional view along the axis VII-VII of FIG.
5.
[0027] FIG. 8 shows a bottom elevation view along the arrow VIII of
FIG. 5.
[0028] FIGS. 9 and 10 show perspective views of an opening/closing
device according to another embodiment of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0029] The invention concerns first of all en opening/closing
device 12 of a sealed packaging 10, intended in particular for the
preservation of agro foodstuffs. However, such device also applies
to sealed packagings intended to any other product and for example
to the preservation of pharmaceutical or chemical products.
[0030] As represented more particularly on FIG. 1, the
opening/closing device 12 of a sealed packaging 10 comprises means
8 for piercing the wall 3 of said packaging 10. The opening/closing
device 12 also comprises plugging means 13 through which the
packaging 10 is pierced, and which may be re-closed after piercing
once the piercing means 8 have been withdrawn so as to avoid any
contact between the inside medium of the packaging 10 and the
surrounding medium.
[0031] According to the invention, said plugging means 13 are
formed of two elements 1, 2, each in the form of a cage, notably a
cylindrical cage, arranged at the wall 3 of said packaging 1a, and
slaved together. The first element 1, as developed thereunder, is
filled with a thermoplastic material which may be re-closed after
piercing. The second element 2 exhibits spreading means to create a
vacuum chamber at the piecing means.
[0032] It should be noted here that according to the present
invention, indifferently, both said functional element may be
substantially formed of two independent parts, slaved together
during moulding, at the packaging to be fitted, or still formed of
a single monobloc part.
[0033] Besides, in the case of rigid packagings, where the risks of
perforation induced by the needle 25, as mentioned later on, are
nil, said element 1 may be used without said element 2.
[0034] In the embodiment shown on FIGS. 2 to 4, illustrating
notably an embodiment of the two part plugging means 13, said first
element 1, called plugging element, is placed on the external side
of the packaging 10 and said second element 2, called vacuum
element or strainer, is placed on the internal side, whereas both
said elements 1,2 sandwiching, in an embodiment, the wall 3 of said
packaging 10 as such. therebetween.
[0035] According to another embodiment, the fixture may also be
provided on the internal or external face of the wall 3 of the
packaging. In such a case, the element 2 is clamped beforehand to
the element 1 before welding the assembly to the packaging 10.
[0036] When the fixture is provided on the internal or external
face of the wall 3 of the packaging 10, it is necessary to cut out
the wall 3 to let through the element 1 respectively, toward the
outside of the packaging 10 or the element 2 inwardly thereof.
[0037] According to a particular embodiment, as illustrated on
FIGS. 5 to 8, said vacuum element or strainer 2, exhibits a
cylindrical body fitted with a closed bottom 15 and with at least
one hole 11 on the lateral wall thereof. This exhibits, on the one
hand, to form a barrier to prevent solid pieces from clogging the
piercing means 8, while letting the liquid flow freely, and on the
other hand, to avoid unwanted piercing of both sheets of the
packaging.
[0038] Slaving said plugging elements 1 and vacuum elements 2, when
they are independent against one another, is made notably by
gluing, welding or clamping. Consequently, any other means known to
the man of the art in the fastening field may be contemplated.
[0039] According to another embodiment of the present invention, as
illustrated on FIGS. 9 and 10, said plugging means 13 may be formed
of a single monobloc-type part 28, which may be attached to the
internal 29 or external 30 face of the wall 3 of the packaging 10.
The functions described in connection with the plugging means 13
formed of two independent parts remain similar.
[0040] One of the advantages of the use of such type of plugging
means 13 in the form of a single part 28 is to enable welding, in
particular, between the part 28 and the wall 3 of the packaging 10
in a single pass. Welding may be performed either between the
surface 32 of the skid 33 and the surface 30 of the wall 3 of the
packaging 10, as shown on FIG. 9, or between the surface 31 of the
skid 33 and the surface 29 of the wall 3 of the packaging 10, as
shown on FIG. 19. In other words, the skid 33 may be placed either
inside or outside the packaging.
[0041] In the embodiment illustrated on the Figures, said plugging
means 13 include, moreover, at least one thermoplastic material
advantageously of elastomer type, intended in particular at said
so-called plugging element 1.
[0042] This thermoplastic material should exhibit specific
characteristics enabling when said plugging means 13 are pierced,
to re-close the holes made.
[0043] To do so, said at least one material used should exhibit
high elasticity coefficient and also average hardness so that said
plugging means 13 exhibit good handling and that the hole is
re-closed instantly, i.e. at no time the surrounding medium
contacts the inside medium of the packaging 10.
[0044] After the different tests, it has been noticed that a
material exhibiting elasticity coefficients ranging between 600 and
700%, possibly between 550 and 650%, as well as a hardness ranging
between 35 and 55 Shores. possibly between 55 and 90 Shores, is
particularly suited to form said plugging means 13.
[0045] In the case of an application of a sealed packaging 10
intended for the preservation of agro foodstuffs, a thermoplastic
material formed of a matter marketed under the trade name
"VITAPRENNE" will be selected advantageously, said material
exhibiting a Shore hardness close to 41 and an elongation
coefficient close to 50%, the wall of the sealed packaging 10 being
formed of a polyethylene film associated with polyamide. the latter
being used as a barrier film against gas.
[0046] Consequently, this example is obviously non-restrictive, it
is possible to use materials marketed under the trade names
"SANTOPRENE" and "SANDOZ" with similar hardness and elongation
coefficient characteristics.
[0047] In the embodiment shown on FIGS. 6, 7 and 8, the plugging
element 1, in the form of a cage, exhibits in succession a first
external skid 4, a hollow zone 6, delineated by a wall 5 in order
to receive a disk 7 therein, and an opening 21. The decompression
element 2, in the form of a cage, exhibits successively a second
skid 4', said bottom 15 and at least one of said holes 11 on its
lateral wall.
[0048] The element 1 may exhibit moreover four anchoring points in
its periphery (not illustrated). These anchoring points enable the
needle 25 on the one hand to be held against the bottom of the
element 2 for the whole intervention in the packaging 10 and on the
other hand to ensure that the hole 9 of the needle 25 is always in
the axis of the holes 11. This anchoring system also enables not to
exert loads onto the packaging 10 when the plugging means 7 is
perforated. The hollow zone 6 is limited in its lower portion by an
internal annular shoulder 27 so as to delineate the deformation of
the disk 7 when it is perforated by the needle 25. The perforation
is performed by the hole 26 whereof the diameter may vary between 5
and 10 mm, advantageously 8 mm.
[0049] According to the invention, said plugging element 1 is
capable of receiving said disk 7, as illustrated on FIGS. 2 to 5,
of said thermoplastic material and the front opening 21 is capable
of authorizing on the one hand insertion of said disk 7 and on the
other hand of being held crimped in said element 1.
[0050] With reference to FIGS. 5 and 8, it can be seen that the
disk 7 is circumscribed by said wall 5 so that said wall 5 forms a
circling, possibly a crimping, of the disk 7.
[0051] The so-called decompression element 2 is capable of forming
a stop for the piercing means and a non-compressible internal
volume.
[0052] This element 2 forms thus a strainer or still a filter
placed on the suction portion in order to prevent, for example, the
wall of the packaging from pressing on the suction port of the
needle and from clogging the suction system.
[0053] Moreover, as illustrated on FIG. 3, said skids 4, 4' are
intended to cooperate with the wall 3 of the packaging 10. In this
view, each skid 4, 4' will exhibit an annular groove 23 and a
shoulder 22 matching on the one hand the marking of both elements
1, 2 and on the other hand the positioning thereof.
[0054] The dimensions of the plugging means 13 are determined in
order on the one hand to be sufficient to enable easy positioning
of the piercing means 8 and on the other hand relatively small so
as to require minimum material whereof the cost is high.
[0055] Good results have been obtained with a diameter ranging
between 15 mm and 25 mm and a thickness ranging between 8 and 15
mm.
[0056] It should be again noted here that the provisions regarding
the plugging means 13, relative to the embodiment with two separate
elements, can be transposed mutatis mutandis to the embodiment with
a single monobloc element, as illustrated on FIG. 9 or 10.
[0057] In the examples illustrated on FIGS. 1 to 4, said piercing
means 8 are formed of a needle 25 comprising a port 9 at the part
piercing the wall 3 of said packaging 10. The shape of said needle
25 enables notably insertion of said injection and/or suction
means, injection and/or suction of liquids, semi-liquids and gases,
such as nitrogen and/or steam through said port 9. Indeed, said
port 9 enables contact between the inside medium of the packaging
10 and the inside of said needle 25.
[0058] To prevent the inside medium of the packaging 10 from
contacting the surrounding medium, said needle 25 contains only one
opening formed by said port 9. This port 9 intended to avoid any
contact between the inside medium of the packaging 10 and the
surrounding medium has set dimensions so that, during perforation,
the port cannot put in contact the inside medium of the packaging
10 and the surrounding medium.
[0059] Thus, for example in the case of a perforation perpendicular
to the plane delineated by said wall, the dimension of said port 9
according to the axis of perforation is smaller than the total
width of said plugging means 13 and the wall 3 of said packaging
10.
[0060] In an embodiment variation, it is also possible to
contemplate a port 9 provided with opening/closing means, the port
9 then being plugged when the port lies outside the packaging, and
is opened when the port lies inside the packaging.
[0061] The present invention also concerns a packaging 10 fitted
with plugging means 13 as mentioned above.
[0062] The present invention also concerns an installation for
implementing such packagings. wherein are provided at said piercing
means 8, injection and/or suction means enabling to inject and/or
to suck in liquids, semi-liquids and gases, such as nitrogen and/or
steam, in and/or outside the packaging preventing any contact
between the inside medium of the packaging 10 and the surrounding
medium.
[0063] The use of steam for a few seconds between each suction
enables to avoid cross contaminations. Injecting nitrogen into the
packaging, previously under vacuum, enables to inflate the
packaging and to concentrate the liquids by gravity around the
opening/closing device 12. The packaging is placed under vacuum
again by sucking nitrogen.
[0064] The invention may also provide, at said piercing means, a
sensor enabling to obtain data on the inside medium of the
packaging 10.
[0065] With reference to the illustrations of FIGS. 2 to 4, the
operation of the opening/closing device 12 is as follows. In a
first step, represented on FIG. 2, said piercing means 8 formed in
the example by the hollow needle 25 are positioned preferably
vertically to said plugging means 13.
[0066] In a second step, said plugging means 13 and the wall 3 of
the packaging 10 are pierced. At this stage, it may be noted that
the wall 3 is broken. It is also clear that said plugging means 13
formed of said elements 1 and 2 are pierced.
[0067] Taking into account the physical features of the material
used for said disk 7, the rim 7a of the disk 7 rests against the
edges of said needle 25 thereby avoiding any contact between the
inside medium of the packaging 10 and the surrounding medium.
[0068] At this stage, illustrated on FIG. 3, the port 9 of said
needle 25 is in contact with the inside medium of the packaging 10
through the holes 11 of the element 2, it is also possible to suck
in or to inject liquids, semi-liquids and/or gases, such as
nitrogen or steam, from the injection and/or suction means 19. It
is also possible at this stage, by means of said sensor 17, to
obtain data on the inside medium of the packaging 10 and in
particular temperature measurements.
[0069] At this stage, it is important to put in evidence that to
guarantee proper sealing of the packaging 10, it is advantageous to
select for the needle a diameter representing approximately a
quarter, possible from a quarter to a sixth, of the diameter of the
washer.
[0070] For exemplification purposes, according to a first
embodiment, the needle 25 has a diameter of 5 mm and delineates an
internal conduit of 3 mm in diameter, and the washer has a diameter
of 20 mm and a thickness of 8 mm. By way of example, the injection
and/suction means 19 enable sucking in one liter of liquid within
45 seconds. The suction speed depends obviously on the viscosity of
the liquid to be injected or sucked in.
[0071] According to a second embodiment, the needle 25 has a
diameter of 4 mm and delineates an internal conduit of 2 mm in
diameter, and the washer has a diameter of 20 mm and a thickness of
8 mm. The injection and/suction means 19 enable sucking in one
liter of liquid within one minute.
[0072] The selection of the dimensions of the needle 25 and of the
plugging means 13 will be determined generally on the one hand by
the time available for the injection and/or suction operations, and
on the other hand, by the quantities of liquids and semi-liquids to
be injected to sucked in.
[0073] In a third step, with reference to FIG. 4, said needle 25
has been extracted from said packaging 10. It appears then that
said packaging 10 remains pierced. When removing the needle 25, the
side 7a created by piercing said element 7 matches the shape of the
needle 25, when the former is removed, the sides 7a touch one
another and the piercing is closed instantly, since the sides are
glued together again thanks to the material(s) used for the washer
7. Thus, at no time, the inside medium of the packaging 10 has been
in contact with the surrounding medium.
[0074] At this stage, it should be noted that, when the sealed
packaging 10 is a vacuum packaging, said side 7a is, when
withdrawing said needle 25, sucked in towards the inside of said
packaging 10, such suction ensures even greater tightness.
[0075] Thanks to the depression and to the material of the washer
7, there is a kind of self-plugging. It will be noted that this
effect is still reinforced by the presence of the ring 5
compressing radially the material of the disk 7.
[0076] This device thus dispenses, notably in the case when it is
intended for the preservation of agro foodstuffs. with extracting
the products. the with re-conditioning them, and enables to use
only one packaging, which confers this device significant
ecological and economic advantage relative to the devices
known.
[0077] Obviously, other embodiments of the device could have been
contemplated by the man of the art without departing from the
object of the invention as defined by the appended claims.
* * * * *