CA2308363A1 - Reclosable closure arrangement having peel seal, reclosable profiles, and slider device; and methods - Google Patents

Reclosable closure arrangement having peel seal, reclosable profiles, and slider device; and methods Download PDF

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Publication number
CA2308363A1
CA2308363A1 CA 2308363 CA2308363A CA2308363A1 CA 2308363 A1 CA2308363 A1 CA 2308363A1 CA 2308363 CA2308363 CA 2308363 CA 2308363 A CA2308363 A CA 2308363A CA 2308363 A1 CA2308363 A1 CA 2308363A1
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CA
Canada
Prior art keywords
package
closure
peel seal
zipper
depending
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA 2308363
Other languages
French (fr)
Inventor
Richard G. Custer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reynolds Consumer Products Inc
Original Assignee
Reynolds Consumer Products, Inc.
Richard G. Custer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Reynolds Consumer Products, Inc., Richard G. Custer filed Critical Reynolds Consumer Products, Inc.
Publication of CA2308363A1 publication Critical patent/CA2308363A1/en
Abandoned legal-status Critical Current

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Abstract

Reclosable closure arrangements suitable for use with packages, such as food and non-food packages, include a zipper having closure profiles that are releasably engageable with each other, a slider to open and close the profiles, and a peel seal.
The closure profiles include depending fins that are interconnected by the peel seal.
The depending fins may be integrally connected to panel sections included in the package. Moreover, the panel sections may be connected to the depending fins at positions that also have the peel seal. In some embodiments, packages including closure arrangements may be hermetically sealed.

Description

RECLOSABLE CLOSURE ARRANGEMENT HAVING PEEL SEAL, RECLOSABLE PROFILES, AND SLIDER DEVICE; AND METHODS
Field The present disclosure generally relates to closure arrangements for packages. In particular, this disclosure relates to closure arrangements having peel seals, reclosable profiles, and slider devices to open and close the profiles.
Background Many packaging applications use resealable containers to store various types of articles and materials. These packages may be used to store and ship food products, non-food consumer goods, medical supplies, waste materials, and many other articles.
Resealable packages are convenient in that they can be closed and resealed after the initial opening to preserve the enclosed contents. The need to locate a storage container for the unused portion of the products in the package is thus avoided. As such, providing products in resealable packages appreciably enhances the marketability of those products.
Some perishable goods are sold to consumers in the form of a reclosable package. For example, cheese or meat products can be packaged in a bag with reclosable closure profiles such that after opening the package, it can be reclosed. It is desirable that these packages be hermetically sealed to prevent spoilage.
It is also desirable that these packages include tamper-evident features to inform the consumer whether the package previously has been opened.
WO 98/05567 to St. Phillips et al., incorporated herein by reference, shows the use of a one-time breakable preferential area of weakness and reclosable profiles on a package.
U.S. Patent No. 4,782,951 to Griesbach et al., incorporated herein by reference, shows the use of a peel seal and reclosable profiles on a package.
Other U.S. Patents show the use of a peel seal in combination with reclosable profiles. Some of these patents include U.S. Pat. No. 4,925,316 to VanErden et al.; U.S. Pat. No. 4,923,309 to VanErden et al.; U.S. Pat. No.
5,456,928 to Hustad et al.; U.S. Pat. No. 5,425,825 to Rasko et al.; and U.S. Pat. No.
5,733,636 to May; each of these patents being incorporated herein by reference.
Improvements in closure arrangements are desirable.
Summary of the Disclosure The present disclosure describes closure arrangements for reclosable packages. In one embodiment, a reclosable package includes a closure arrangement having a zipper, a slider device, and a peel seal. The zipper includes first and second closure profiles that are releasably engageable with each other, and the first and second closure profiles include first and second depending fins that are interconnected by the peel seal. The slider device is mounted to the zipper and slides relative to the zipper to control interlocking and disengaging between the closure profiles.
In another embodiment, first and second depending fins are integrally connected to the first and second panel sections, respectively. The slider device is mounted to the zipper and slides relative to the zipper to control interlocking and disengaging between the first and second closure profiles.
In still another embodiment, first and second panel sections are connected to the first and second depending fins, respectively, at positions also having the peel seal. The slider device is mounted to the zipper and slides relative to the zipper to control interlocking and disengaging between the first and second closure profiles.
Brief Description of the Drawings FIG. 1 is a perspective view of a first embodiment of a flexible, reclosable package, according to principles of this disclosure;
FIG. 2 is an enlarged, perspective view of one embodiment of a slider suitable for use with a closure arrangement of the invention;
FIG. 3 is another perspective view of the slider device depicted in FIG. 2;
FIG. 4 is bottom plan view of the slider device depicted in FIG. 2;
FIG. 5 is a cross-sectional view of the slider device depicted in FIGS. 2-4 taken along the line 5-5 of FIG. 4;
FIG. 6 is an enlarged, fragmented schematic, cross-sectional view of the closure arrangement depicted in FIG. 1 taken along the line 6-6 of FIG. l;
FIG. 7 is the same sectional view as in FIG. 6 prior to forming the peel seal;
FIG. 8 is the same sectional view as in FIG. 6 after disrupting the peel seal; and FIG. 9 is an enlarged, schematic, cross-sectional view of another embodiment of a closure arrangement analogous to the view depicted in FIG. 6.
Detailed Description Attention is directed to FIG. 1. FIG. 1 illustrates an example packaging arrangement in the form of a resealable, flexible package 10 having a closure arrangement 8. In the illustrated embodiment, the closure arrangement 8 includes a zipper 11 with first and second closure profiles 12, 14; a slider device 16 to open and close the profiles 12, 14; and a peel seal 18.
The flexible package 10 includes first and second opposed panel sections 20, 22 made from a flexible, polymeric film. For some manufacturing applications, the first and second panel sections 20, 22 are heat sealed together along two edges 24, 26 and meet at a fold line in order to form a three-edged containment section for a product within the interior of the package 10. The fold line comprises the bottom edge 28. Alternatively, two separate panel sections 20, 22 of polymeric film may be used and heat sealed together along the two edges 24, 26 and at the bottom 28.
Access is provided to the interior of the package 10 through a mouth 30.
The zipper 11 can include a variety of configurations and structures. For example, the zipper 11 can be constructed according to U.S. Patent Nos.
4,240,241;
4,246,288; or 4,437,293; each of which is incorporated by reference herein.
The slider device 16 can include a variety of configurations and structures. One particular example of a suitable slider device 16 is illustrated in more detail in FIGS. 2-5. The slider device 16 includes a top wall 50 and a pair of side walls 52, 54 extending from the wall 50 such that the walls 52, 54 form a generally C-shaped channel. The slider device 16 also includes a spreader or plow 56 extending or projecting from the wall 50. In the embodiment illustrated, the plow 56 comprises first and second angled wedges 58, 60 separated by a gap 62.
FIG. 5 illustrates a cross-section taken along the line 5-5 of FIG. 4. First and second hook constructions 70, 72 are viewable in FIG. 5. First and second hook constructions 70, 72 help to permit the slider device 16 to slide along the zipper 11 without becoming disengaged from the package 10.
FIG. 6 illustrates a fragmented cross-sectional view of the closure arrangement 8 taken along the 6-6 line of FIG. 1. FIG. 6 shows package 10 including first and second opposed panel sections 20, 22, zipper 1 l, peel seal 18, and slider device 16. By "peel seal", it is meant that the bonding strength between the layers forming the peel seal is less than the bonding strength of other layers in the package 10, so that when a pulling force is applied, the layers forming the peel seal will break or peel apart before other portions of package 10. Peel seals are known in the packaging art, and examples of peel seals that may be useable with the package of the present disclosure are taught in U.S. Patent Nos. 4,923,309; 4,925,316;
5,425,825; 5,456,928; 5,470,156; and 5,733,636, the disclosures ofwhich are incorporated herein by reference. The zipper 11 has first and second closure profiles 12, 14. The first and second closure profiles 12, 14 are releasably engageable with each other to provide a reclosable seal to the package 10. The first profile 12 has a first depending fin or flange 36 extending therefrom, while the second profile 14 has a second depending fin or flange 40 extending therefrom. If the zipper 11 is formed separately from the panel sections 20, 22, the first and second fins 36, 40 are thermally fused to inner surfaces of the respective first and second panel sections 20, 22. Alternatively, the zipper 11 may be extruded with the panel sections 20, 22 such that the first fin 36 is integrally formed with the first panel section 20, and the second fin 40 is integrally formed with the second panel section 22.
FIG. 7 illustrates the same sectional view of the closure arrangement 8 depicted in FIG. 6 prior to forming the peel seal 18 shown in FIG. 6. The first and second fins 36, 40 shown in FIG. 7 have first and second adhesive layers or films 94, 96 suitable for forming a peel seal attached to their respective inner facing surfaces 90, 92. The peel seal 18 shown in FIG. 6 is created when the first and second fins 36, 40 are sealed together or otherwise interconnected between the first and second layers 94, 96. Additional configurations suitable for forming a peel seal, such as, for example, having an adhesive layer on one fin, having a first and/or second adhesive layer on which contaminants are introduced to form a weak bond, and the like, are known in the art and may be used in the closure arrangements of the invention.
Initially, the peel seal 18 holds the mouth 30 closed independent of the reclosable zipper 11, providing a tamper-evident structure. The tamper-evident structure signals to the consumer whether the package has been opened previously.
In some instances, the peel seal 18 may provide a hermetic seal for the package 10. To form a hermetic seal, the first and second opposed panel sections 20, 22 are constructed from a material capable of forming a hermetic seal.
Moreover, the first and second opposed panel sections 20, 22 are attached to portions of the first and second fins 36, 40, respectively, having the peel seal 18 such that the contents of the package 10 are completely encompassed by materials suitable for forming a hermetic seal.
One embodiment suitable for forming a hermetically sealed package is depicted in FIG. 9. FIG. 9 illustrates an embodiment of a closure arrangement analogous to the view depicted in FIG. 6. In FIG. 6 the contents of the package are contained within a boundary created by first and second fins 36, 40 and first and second opposed panel sections 20, 22. The embodiment in FIG. 9 has structures analogous to those shown in the embodiment in FIG. 6 including package 10, zipper 11, first and second closure profiles 12, 14, slider device 16, first and second fins 36, 40, and peel seal 18. Accordingly, the embodiment in FIG. 9 shows a package 110, a zipper 11 l, first and second closure profiles 112, 114, and a slider device 116.
Moreover, this embodiment shows first and second fins 136, 140 and a peel seal 118. In this embodiment, however, the first opposed panel section 120 is connected to the first fin 136, at a first location 1 SO containing the peel seal 118.
Similarly, the second opposed panel section 122 is connected to the second fin 140, at a second location 152 containing the peel seal 118. In this embodiment, the first and second opposed panel sections 120, 122 are joined to the first and second fins 136, 140 such that the first and second locations 150, 152 are coterminous to at least some extent with the peel seal 118. By coterminous, it is meant the first and second locations 150, 152 are at least partially to totally overlapping with the peel seal 118.
Thus, in this embodiment the peel seal 118 is created between the first and second fins 136, 140 such that the contents of the package 110 are completely contained within the first and second opposed panel sections 120, 122 and the peel seal 118.
Otherwise stated, the contents of the package 110 are contained within a boundary created by first and second opposed panel sections 120, 122 and the peel seal 118.
Packages having reclosable closure arrangements and peel seals of the invention also may be hermetically sealed by known methods.
To initially open the mouth of the reclosable package, the slider device 16 is slid relative to the zipper 11 from a position where the first and second closure profiles 12, 14 are interlocked to a position where the first and second closure profiles 12, 14 are disengaged. Moreover, the peel seal 18 is disrupted by applying a force pulling first and second opposed panel sections 20, 22 in directions opposite each other. FIG. 8 shows the first and second fins 36, 40 after disrupting the peel seal 18. Because the other bonds in the package 10 are stronger than the peel seal 18, the other bonds in the package 10 will not rupture in response to the opening force applied to the peel seal 18. To close the mouth 30, the slider device 16 is moved in the opposite direction.
The closure arrangement is manufactured using conventional extrusion and heat sealing techniques.
The above specification and examples are believed to provide a complete description of the manufacture and use of particular embodiments of the invention.
Many embodiments of the invention can be made without departing from the spirit and scope of the invention.

Claims (12)

1. A reclosable package, comprising:
(a) a package surrounding wall forming a package interior and having a mouth providing access to said interior; said package surrounding wall including a package bottom;
(b) a zipper extending along said mouth; said zipper having first and second closure profiles; said first and second closure profiles being releasably engageable with each other;
(i) said first closure profile having a first depending fin extending from said first closure profile in a direction toward said package bottom;
(ii) said second profile having a second depending fin extending from said second closure profile in a direction toward said package bottom;
(c) a peel seal interconnecting said first and second depending fins; and (d) a slider device constructed and arranged to slide relative to said zipper to control interlocking and disengaging between said first and second closure profiles.
2. A reclosable package according to claim 1, wherein:
(a) said first depending fin is integrally connected to said first panel section; and (b) said second depending fin is integrally connected to said second panel section.
3. A reclosable package according to claim 1, wherein:
(a) said first panel section is connected to said first depending fin at a location containing said peel seal; and (b) said second panel section is connected to said second depending fin at a location containing said peel seal.
4. A reclosable package according to claim 1, wherein said peel seal comprises a first adhesive layer attached to said first depending fin and a second adhesive layer attached to said second depending fin.
5. A reclosable zipper arrangement, comprising:
(a) first and second closure profiles; said first and second closure profiles being selectively releasably engageable with each other;
(i) said first closure profile having a first depending fin extending from said first closure profile;
(ii) said second profile having a second depending fin extending from said second closure profile;
(b) a peel seal interconnecting said first and second depending fins; and (c) a slider device constructed and arranged to slide relative to said zipper to control interlocking and disengaging between said first and second closure profiles.
6. A reclosable zipper arrangement according to claim 5, wherein said peel seal comprises a first adhesive layer attached to said first depending fin and a second adhesive layer attached to said second depending fin.
7. A method of constructing a reclosable package comprising steps of:
(a) forming first and second opposed panel sections secured together along first and second edges and a fold line comprising a bottom edge;
(b) forming a zipper extending along a mouth opposite said fold line, the zipper having first and second closure profiles, and the first and second closure profiles being releasably engageable with each other;
the first closure profile having a first depending fin extending from said first closure profile in a direction toward the fold line; the second profile having a second depending fin extending from the second closure profile in a direction toward the fold line;
(c) forming a peel seal interconnecting the first and second depending fins; and (d) engaging a slider device constructed and arranged to slide relative to the zipper to control interlocking and disengaging between the first and second closure profiles.
8 8. The method according to claim 7 wherein the step of forming a zipper further includes forming:
(a) the first depending fin integrally connected to the first panel section;
and (b) the second depending fin integrally connected to the second panel section.
9. The method according to claim 7 wherein the step of forming a peel seal further includes:
(a) connecting the first panel section to the first depending fin at a location containing the peel seal; and (b) connecting the second panel section to the second depending fin at a location containing the peel seal.
10. The method according to claim 7 wherein the step of forming a peel seal includes a first adhesive layer attached to the first depending fin and a second adhesive layer attached to the second depending fin.
11. A method for using a reclosable package comprising the steps of:
(a) providing a package having a package surrounding wall forming a package interior and having a mouth providing access to the interior;
the package surrounding wall including a package bottom; a zipper extending along the mouth, the zipper having first and second closure profiles; the first and second closure profiles being releasably engageable with each other; the first closure profile having a first depending fin extending from the first closure profile in a direction toward the package bottom; the second profile having a second depending fin extending from the second closure profile in a direction toward the package bottom; a peel seal interconnecting the first and second depending fins; and a slider device constructed and arranged to slide relative to the zipper to control interlocking and disengaging between the first and second closure profiles;
(b) moving the slider device along the mouth in a first direction to open the package; and (c) disrupting the peel seal.
12. The method according to claim 11, further including:
(a) moving the slider device along the mouth in a second direction opposite the first direction to close the package.
CA 2308363 1999-05-14 2000-05-12 Reclosable closure arrangement having peel seal, reclosable profiles, and slider device; and methods Abandoned CA2308363A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US13435499P 1999-05-14 1999-05-14
US60/134,354 1999-05-14
US09/567,613 2000-05-10

Publications (1)

Publication Number Publication Date
CA2308363A1 true CA2308363A1 (en) 2000-11-14

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ID=22462982

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Application Number Title Priority Date Filing Date
CA 2308363 Abandoned CA2308363A1 (en) 1999-05-14 2000-05-12 Reclosable closure arrangement having peel seal, reclosable profiles, and slider device; and methods

Country Status (1)

Country Link
CA (1) CA2308363A1 (en)

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