EP0388884A1 - Zippered closure for thermoformed package - Google Patents
Zippered closure for thermoformed package Download PDFInfo
- Publication number
- EP0388884A1 EP0388884A1 EP90105231A EP90105231A EP0388884A1 EP 0388884 A1 EP0388884 A1 EP 0388884A1 EP 90105231 A EP90105231 A EP 90105231A EP 90105231 A EP90105231 A EP 90105231A EP 0388884 A1 EP0388884 A1 EP 0388884A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bag
- film
- foodstuffs
- walls
- plastic film
- 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.)
- Ceased
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
- B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D33/00—Details of, or accessories for, sacks or bags
- B65D33/16—End- or aperture-closing arrangements or devices
- B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
- B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
- B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
- B65D33/2525—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener located between the fastener and the product compartment
Definitions
- This invention relates to improvements in the packaging art, and more particularly to improvements in reclosable bags.
- a sealing means has been provided outside of the reclosable fastener, but these allow an air space between the reclosable structure and the contents. Also, if the bag holds food items, the presence of the food can contaminate or interfere with the reclosable structure. This is particularly true where a fine rib and groove profile type of closure is used which should be kept clear of contaminants which would interfere with the interlocking of the closing structure.
- a further object of the invention is to provide an improved fastener which is doubly sealed with sealing means outwardly of the reclosable fastener and sealing means inside of the fastener within the bag.
- a still further object of the invention is to provide an improved bag and fastener structure which is particularly well suited for containing foodstuffs such as sliced meat, cheeses and other items which must be completely isolated from the outside before using.
- the invention utilizes a plastic film bag for containing foodstuffs such as stacked slices of bacon or meat.
- the plastic film bag is sealed around its edge and has a mouth along one side edge.
- a reclosable zipper In the bag mouth is a reclosable zipper.
- the zipper is formed from opposed fastener strips each having a complementary rib and groove type of interlocking profile.
- the strips' base webs are provided with portions extending inwardly toward the foodstuffs within the bag and portions extending outwardly.
- the portions extending inwardly are arranged so one portion of the base web is bonded to the film wall of the bag and is continuous with the other portion so that they will provide a barrier preventing the foodstuffs from coming into contact with the zipper profile prior to use.
- a frangible line such as provided by perforations permits tearing of the inwardly extending base web portions as the package is initially being opened.
- the base web portions which extend outwardly are unattached to provide pull flanges for opening the bag, and the film of the bag walls extends beyond the outwardly extending base web portions to seal the bag outwardly of the fastener strip profiles.
- a dual fastener strip is provided. These are usually formed by a single extrusion process either in a tube or a flat with the strips having a backing web 10 and profiles on the surface.
- Male rib profile 11 is shaped and sized to interlockingly fit into female groove profile 12.
- a rib profile 13 is shaped and sized to fit into a groove profile 14.
- frangible tear lines formed by perforations at 15 and 17 extend along the web 10 parallel to the profiles. So that leakage through the perforation lines is prevented, a protective sealing strip is adhered over the perforations as shown the strips 16 and 18.
- the web 10, as shown in Fig. 1, is folded bringing the profiles into interlocking relationship as shown in Fig. 2.
- the dual strip is then cut at 19, and preferably the lower web portion above the profile is slightly longer than the upper web portion as will become more clear in connection with the description of Fig. 4.
- Fig. 3 illustrates a fastener strip of Figs. 1 and 2 assembled in a package 20.
- the package forms a bag having a film wall 21 at one side and an opposing film wall 22 at the other side. These film walls are sealed along their edges to each other and along one side, have an opening mouth in which the fastener strip 23 is located, between the layers of film.
- Fig. 3 illustrates the fastener strip not extending to the complete sides of the film walls 21 and 22, it will be understood that in some constructions, it will be desirable that the fastener strip extend fully to the edges of the film, and the features of the invention are not to be limited by the illustration of Fig. 3.
- the bag contents such as layers of bacon 32
- a stiffening cardboard insert 33 extends along one side of the layers of bacon providing a stiffness to the bag.
- the cardboard 33 will be unique to the type of foodstuffs within the bag and is useful in the case of a greasy material such as bacon to help prevent migration of the grease.
- the arrangement and structure of the fastener is such that the interlocking profiles 11 and 12 are protected by the location of a lower portion 30 of the web.
- the thin film plastic walls extend to the edge of the bag and are heat sealed to each other at 26. As illustrated, an upper portion 29 of the fastener web extends between the layers of film and is joined thereto sandwiched by the heat seal lamination at 26.
- the fastener strips 23 and 24 can be, for the purpose of reference, described as upper and lower strips, but their relative location is either at the top or along one side of the bag, and the location is not material to their function.
- the upper strip 23 has a base web for the profile with an outer portion 28 which extends outwardly from the rib, away from the bag contents.
- the other strip 24 has an outer portion 29 of the base web which extends from the groove outwardly away from the contents.
- the upper strip 23 has an inner web portion 30 extending inwardly toward the contents.
- the strip 24 has an inner portion 31 which extends inwardly in the bag toward the contents.
- the inner portions 30 and 31 are integral with each other forming a fold at 25.
- the strips in their location in the mouth of the bag are laminated to the inner surfaces of the film layers 21 and 22.
- the lower strip 24 is laminated over its full length so that the outer portion 29 and the inner portion are both laminated over their full surface.
- the upper strip 23, however, is laminated only over the outer portion 28, which lamination extends to the location below the rib 11.
- the inner portion 30, however, is free of lamination to the film 21 and extends downwardly beneath the bacon 32 to lay along the inner web 31.
- the webs are laminated to each other over the area 25a extending from the fold 25 to the perforations 15.
- the web 30, however, is free of lamination to the web 31 between the perforations 15 and the profiles 11 and 12.
- the bag contents are fully sealed from contaminants in the store until the purchaser buys the bag 20 and first opens it.
- a triple seal prevents the passage of air between the atmosphere and the bag contents 32.
- the laminated film at 26 provides a barrier.
- the joined rib and groove 11 and 12 provide a barrier.
- the base strip portions 30 and 31 are connected to each other at 25 to provide a barrier and the perforations are sealed by the strip 16.
- the package is opened by cutting off the top along the cut line 27. This permits the separation of the outer portions 28 and 29 of the base strips, which are not bonded to each other at 27a.
- the outer portions 28 and 29 provide pull flanges as shown in Fig. 5. Pulling the pull flanges apart, separates the rib and grooves profiles 11 and 12 as shown in Fig. 5. Continued pulling of the pull flanges tears the perforation line 15 so that the remaining portion of the inner base strip 30 lifts upwardly as illustrated in Fig. 5.
- Figs. 6 through 8 are provided to show another manner of construction wherein the tear line is provided at the exact location of the fold.
- a double fastener strip is provided having a rib profile 45 and a groove profile 46.
- a tear line is provided in the strip at 47 covered by a sealing layer 48.
- the double closure strip is severed along a cut line 49.
- the sealing strip thus severed, is shown attached in the mouth of a bag in Figs. 7 and 8 with the bag formed of film walls 40 and 41.
- the fastener strip has outer strip portions 52 and 53 which extend from the profiles away from the bag, and inner strip portions 54 and 55 which extend from the profiles toward the bag contents.
- the bag contents are shown as layers of meat or bacon 42 with a folded cardboard over one edge adjacent the closure strip.
- the film layers are extended and bonded to each other at 50 along the top and the longer outer flange 53 may extend between the layers and be bonded therebetween.
- the fastener strips are laminated to the film layers with the lower strip bonded over its full length to bond both the outer strip portion 53 and inner strip portion 55.
- the upper strip is bonded over only the outer strip portion to the base of the rib 45 with the inner strip portion 54 unbonded to the film and extending down beneath the edge of the contents to be continuous with the inner strip portion 55 and the strips are folded at the location of the tear line 47.
- the purchaser finds a package fully sealed by the outer seal 50 between the film layers.
- the intermediate seal is provided by the interlocked rib and groove 45 and 46, and an inner seal is provided by the continuous inner strip portions 54 and 55 with the perforations protected by the sealing layer 48.
- the purchaser cuts off the top along a cut line 51 so that the outer strip portions 52 and 53 separate and form pull flanges. Pulling these flanges apart in the manner shown in Fig. 8, separates the rib 45 from the groove 46, and continued pull causes the inner strip portions 54 and 55 to tear apart along the tear line 47, thus permitting removal of the bacon 42 from within the package.
- the inner web portion 54 conveniently lays along the film 40 out of the way of the contents as they are removed or put back in the package. The package is, of course, reusable and the contents can be reinserted and the rib and groove profile 45 and 46 rejoined.
- a reclosable package yet one which is completely sealed against contaminants.
- the structure is particularly well suited for use with foodstuffs and provides a seal, but with the convenience of a reusable reclosable package.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bag Frames (AREA)
- Packages (AREA)
- Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
Abstract
A plastic film bag for foodstuffs (32) or the like having opposed film bag walls joined at their edges and forming a mouth between the walls at one side, reclosable fastener strips (11, 12) between the walls at the bag mouth having facing releasably interlocking profiles thereon with a base for each of the strips, each base web (28, 29) having an outer portion and an inner portion which is adjacent the contents of the bag, one inner portion bonded to the wall of the bag and the other inner portion substantially unattached, the inner portions of the webs being continuous with a perforate tear line (15) therethrough, a sealing strip (16) over the tear line, the outer edges of the film at the mouth bonded to each other above the fastener strips so that the outer edge can be cut leaving pull flanges with the inner portions of the base webs sealing the interior of the bag until the tear lines are torn.
Description
- This invention relates to improvements in the packaging art, and more particularly to improvements in reclosable bags.
- In the provision of reclosable bags, and particularly those which are used for foodstuffs, it is desirable that a structure be used by which the bag is initially fully sealed. When used for general merchandise, this prevents tampering with the contents, and when used for foodstuffs, the initial sealing protects the contents from spoilage and tampering or contamination due to intentional access to the bag or due to the entrance of air or contaminants. It is further desirable that the initial sealing be such that it is not inadvertently opened due to handling of the bag, and if opened, that there is a tamper-evident feature which would show the purchaser that the bag had been previously opened. These objectives must be accomplished without adversely affecting the reclosable feature that is used.
- In some arrangements previously used, a sealing means has been provided outside of the reclosable fastener, but these allow an air space between the reclosable structure and the contents. Also, if the bag holds food items, the presence of the food can contaminate or interfere with the reclosable structure. This is particularly true where a fine rib and groove profile type of closure is used which should be kept clear of contaminants which would interfere with the interlocking of the closing structure.
- It is accordingly an object of the present invention to provide an improved flexible plastic bag structure which has a closable zipper at the mouth and which is provided with a unique sealing arrangement to prevent contamination of the foodstuffs within the container and prevent the foodstuffs from contacting the reclosable zipper.
- A further object of the invention is to provide an improved fastener which is doubly sealed with sealing means outwardly of the reclosable fastener and sealing means inside of the fastener within the bag.
- A still further object of the invention is to provide an improved bag and fastener structure which is particularly well suited for containing foodstuffs such as sliced meat, cheeses and other items which must be completely isolated from the outside before using.
- The invention utilizes a plastic film bag for containing foodstuffs such as stacked slices of bacon or meat. The plastic film bag is sealed around its edge and has a mouth along one side edge. In the bag mouth is a reclosable zipper. The zipper is formed from opposed fastener strips each having a complementary rib and groove type of interlocking profile. The strips' base webs are provided with portions extending inwardly toward the foodstuffs within the bag and portions extending outwardly. The portions extending inwardly are arranged so one portion of the base web is bonded to the film wall of the bag and is continuous with the other portion so that they will provide a barrier preventing the foodstuffs from coming into contact with the zipper profile prior to use. A frangible line such as provided by perforations permits tearing of the inwardly extending base web portions as the package is initially being opened.
- The base web portions which extend outwardly are unattached to provide pull flanges for opening the bag, and the film of the bag walls extends beyond the outwardly extending base web portions to seal the bag outwardly of the fastener strip profiles.
- Other objects, advantages and features will become more apparent with the teaching of the principles of the invention in connection with the disclosure of the preferred embodiments thereof in the specification, claims and drawings, in which:
- FIG. 1 is an end elevational view of a pair of connected fastener strips to be used for bag closures;
- FIG. 2 illustrates the strip of Fig. 1 folded to join the interlocking profiles;
- FIG. 3 is a plan view of a flexible film package with a fastener strip of Fig. 2 installed;
- FIG. 4 is a sectional view taken substantially along line IV-IV;
- FIG. 5 is a sectional view similar to Fig. 4 illustrating the position of the parts as the bag is being opened for the first time;
- FIG. 6 is an elevational view similar to Fig. 2 illustrating a modified form of the fastener strips which are used;
- FIG. 7 is a vertical sectional view taken through a container top using a fastener of Fig. 6;
- FIG. 8 is another view of Fig. 7 showing the position of the parts as the bag is opened; and
- FIG. 9 is a sectional view taken substantially along line IX-IX of Fig. 4.
- As illustrated in Figs. 1 and 2, a dual fastener strip is provided. These are usually formed by a single extrusion process either in a tube or a flat with the strips having a
backing web 10 and profiles on the surface. Malerib profile 11 is shaped and sized to interlockingly fit intofemale groove profile 12. Arib profile 13 is shaped and sized to fit into agroove profile 14. Additionally, frangible tear lines formed by perforations at 15 and 17 extend along theweb 10 parallel to the profiles. So that leakage through the perforation lines is prevented, a protective sealing strip is adhered over the perforations as shown thestrips web 10, as shown in Fig. 1, is folded bringing the profiles into interlocking relationship as shown in Fig. 2. The dual strip is then cut at 19, and preferably the lower web portion above the profile is slightly longer than the upper web portion as will become more clear in connection with the description of Fig. 4. - Fig. 3 illustrates a fastener strip of Figs. 1 and 2 assembled in a
package 20. The package forms a bag having afilm wall 21 at one side and anopposing film wall 22 at the other side. These film walls are sealed along their edges to each other and along one side, have an opening mouth in which thefastener strip 23 is located, between the layers of film. - While Fig. 3 illustrates the fastener strip not extending to the complete sides of the
film walls - As illustrated in Fig. 4, the bag contents, such as layers of
bacon 32, are positioned between thefilm walls stiffening cardboard insert 33 extends along one side of the layers of bacon providing a stiffness to the bag. Thecardboard 33 will be unique to the type of foodstuffs within the bag and is useful in the case of a greasy material such as bacon to help prevent migration of the grease. However, it will be seen that the arrangement and structure of the fastener is such that theinterlocking profiles lower portion 30 of the web. - The thin film plastic walls extend to the edge of the bag and are heat sealed to each other at 26. As illustrated, an
upper portion 29 of the fastener web extends between the layers of film and is joined thereto sandwiched by the heat seal lamination at 26. - The
fastener strips upper strip 23 has a base web for the profile with anouter portion 28 which extends outwardly from the rib, away from the bag contents. Theother strip 24 has anouter portion 29 of the base web which extends from the groove outwardly away from the contents. Theupper strip 23 has aninner web portion 30 extending inwardly toward the contents. Thestrip 24 has aninner portion 31 which extends inwardly in the bag toward the contents. Theinner portions - The strips in their location in the mouth of the bag are laminated to the inner surfaces of the
film layers lower strip 24 is laminated over its full length so that theouter portion 29 and the inner portion are both laminated over their full surface. - The
upper strip 23, however, is laminated only over theouter portion 28, which lamination extends to the location below therib 11. Theinner portion 30, however, is free of lamination to thefilm 21 and extends downwardly beneath thebacon 32 to lay along theinner web 31. The webs are laminated to each other over thearea 25a extending from thefold 25 to theperforations 15. Theweb 30, however, is free of lamination to theweb 31 between theperforations 15 and theprofiles - The bag contents are fully sealed from contaminants in the store until the purchaser buys the
bag 20 and first opens it. A triple seal prevents the passage of air between the atmosphere and thebag contents 32. First, the laminated film at 26 provides a barrier. Next, the joined rib andgroove base strip portions strip 16. - In use, after the purchaser buys the package, the package is opened by cutting off the top along the cut line 27. This permits the separation of the
outer portions outer portions grooves profiles perforation line 15 so that the remaining portion of theinner base strip 30 lifts upwardly as illustrated in Fig. 5. - To tear the
perforation line 15 often requires substantial pull on the flanges, and tearing can be aided by the user inserting his fingers into the space between thestrip portions tear line 15. One manner of providing the area of stress concentration is shown in Fig. 4 and in detail in Fig. 9 wherein thebond 25a is terminated in an undulatingline 34. This leaves theareas 30 free to separate and providespoints 36 of stress concentration. When the user inserts his finger between thelayers tear line 15 will tend to start separating at thepoints 36 of stress concentration. This arrangement which aids in separating thetear line 15 has been found to be particularly useful where the tear line is located in the surface of theinner web portion 30. - Figs. 6 through 8 are provided to show another manner of construction wherein the tear line is provided at the exact location of the fold.
- As shown in Fig. 6, a double fastener strip is provided having a
rib profile 45 and agroove profile 46. A tear line is provided in the strip at 47 covered by asealing layer 48. The double closure strip is severed along acut line 49. - The sealing strip, thus severed, is shown attached in the mouth of a bag in Figs. 7 and 8 with the bag formed of
film walls outer strip portions inner strip portions bacon 42 with a folded cardboard over one edge adjacent the closure strip. - The film layers are extended and bonded to each other at 50 along the top and the longer
outer flange 53 may extend between the layers and be bonded therebetween. - The fastener strips are laminated to the film layers with the lower strip bonded over its full length to bond both the
outer strip portion 53 andinner strip portion 55. - The upper strip, however, is bonded over only the outer strip portion to the base of the
rib 45 with theinner strip portion 54 unbonded to the film and extending down beneath the edge of the contents to be continuous with theinner strip portion 55 and the strips are folded at the location of thetear line 47. - In use, the purchaser finds a package fully sealed by the
outer seal 50 between the film layers. The intermediate seal is provided by the interlocked rib andgroove inner strip portions sealing layer 48. - In use, the purchaser cuts off the top along a
cut line 51 so that theouter strip portions rib 45 from thegroove 46, and continued pull causes theinner strip portions tear line 47, thus permitting removal of thebacon 42 from within the package. Theinner web portion 54 conveniently lays along thefilm 40 out of the way of the contents as they are removed or put back in the package. The package is, of course, reusable and the contents can be reinserted and the rib andgroove profile - Thus, there has been provided a reclosable package, yet one which is completely sealed against contaminants. The structure is particularly well suited for use with foodstuffs and provides a seal, but with the convenience of a reusable reclosable package.
Claims (10)
1. A plastic film bag for foodstuffs or the like, comprising in combination: a first plastic film bag wall joined at its edge to a second plastic film bag wall with a bag mouth between the walls at one side; reclosable fastener strips between the walls at the bag mouth having facing releasably interlocking profiles thereon each with a base web bonded to the confronting surfaces of the film, each base web having an inner portion between the profiles and the bag interior and an outer portion outwardly of the profiles; the inner portion of said base webs being continuous with each other to seal the bag interior; and frangible tear means on the inner portion of the base webs for breaking into the bag interior so that the profiles can be separated and thereafter afford a reclosable bag mouth.
2. A plastic film bag for foodstuffs or the like constructed in accordance with claim 1, wherein the inner portion of one of said base webs is bonded to the film and the inner portion of the other base web is substantially free of attachment to the film.
3. A plastic film bag for foodstuffs or the like constructed in accordance with claim 1, wherein said frangible tear means has stress concentration areas so that initiation of tearing of the frangible tear means will be possible.
4. A plastic film bag for foodstuffs or the like constructed in accordance with claim 1, herein said frangible tear means is in the form of a perforation line through the continuous web with the bond line following an undulating path to define points of stress concentration.
5. A plastic film bag for foodstuffs or the like constructed in accordance with claim 1, wherein the film bag walls extend outwardly beyond the fastener strips and are bonded to each other so that access to the fastener strips can be made cutting off the bonded film area.
6. The method of making a flexible plastic container for foodstuffs or the like comprising the steps: forming opposed plastic film walls for defining a bag with a mouth at one edge; forming reclosable fastener strips with base webs and confronting pressure closable reopenable profiles thereon, the webs having an inner portion at one side of the profiles adjacent the bag interior and an outer portion at the other side of the profile, said inner portions joined to each other; surface bonding the strips between the film walls; and forming a frangible tear line between the inner portions of the base webs.
7. The method of making a flexible plastic container for foodstuffs or the like in accordance with the steps of claim 6, wherein one inner portion of the web is joined to the film wall and the other inner web portion is substantially free of attachment to the film wall.
8. A plastic film bag for foodstuffs or the like, comprising in combination: opposed bag film walls having a bag mouth along one side; reclosable fastener strips having confronting pressure closable and reclosable profiles, the strips being bonded to the inner surface of the film walls at the bag mouth; and a frangible member joining the strips inwardly of the profiles adjacent the bag interior with the frangible member sealing the bag interior until broken and after which the bag is opened and reclosed by the profiles.
9. A plastic film bag for foodstuffs or the like constructed in accordance with claim 8, wherein a bond line is arranged in a zig-zag pattern to form areas of stress concentration for tearing the perforations.
10. A plastic film bag for foodstuffs of the like, comprising in combination: a first plastic film bag wall joined at its edge to a second plastic film bag wall with a bag mouth between the walls at one side; and reclosable fastener strips between the walls at the bag mouth having facing releasably interlocking profiles thereon each with a base web having a portion extending inwardly toward the interior of the bag, one of said base web portions bonded to the bag wall film and the other of said base web portions substantially unbonded.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US327619 | 1989-03-23 | ||
US07/327,619 US5026563A (en) | 1989-03-23 | 1989-03-23 | Zippered closure for thermoformed package |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0388884A1 true EP0388884A1 (en) | 1990-09-26 |
Family
ID=23277313
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90105231A Ceased EP0388884A1 (en) | 1989-03-23 | 1990-03-20 | Zippered closure for thermoformed package |
Country Status (6)
Country | Link |
---|---|
US (1) | US5026563A (en) |
EP (1) | EP0388884A1 (en) |
JP (1) | JPH02296656A (en) |
AU (1) | AU624488B2 (en) |
CA (1) | CA2012489A1 (en) |
NZ (1) | NZ232970A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0441504A1 (en) * | 1990-02-05 | 1991-08-14 | Oscar Mayer Foods Corporation | Saddle zipper recloseable package |
EP0508899A1 (en) * | 1991-04-11 | 1992-10-14 | Illinois Tool Works Inc. | Improved seal system for block cheese |
EP0547966A1 (en) * | 1991-12-17 | 1993-06-23 | Minigrip, Incorporated | Tamper-evident zipper closed package |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5224779A (en) * | 1989-02-24 | 1993-07-06 | Oscar Mayer Foods Corporation | Tamper-evident, reclosable flexible packages |
US5924795A (en) * | 1991-02-22 | 1999-07-20 | Kraft Foods, Inc. | Tamper-evident, reclosable, flexible packages |
US5088617A (en) * | 1991-02-28 | 1992-02-18 | Sara Lee Corporation | Package for food products |
US5118203A (en) * | 1991-04-19 | 1992-06-02 | T W Kutter, Inc. | Resealable packages and method and apparatus for producing same |
US5443154A (en) * | 1993-09-27 | 1995-08-22 | Oscar Mayer Foods Corporation | Easy separating package and method |
US5951453A (en) * | 1996-11-15 | 1999-09-14 | Innoflex Incorporated | Recloseable bag assembly and method of making same |
US6079878A (en) * | 1997-04-11 | 2000-06-27 | Yeager; James W. | Reclosable bag with profile strip fastener assembly, and bag body |
US5954433A (en) * | 1997-12-05 | 1999-09-21 | Innoflex Incorporated | Reclosable bag with improved opening feature |
US20110235951A1 (en) * | 1998-07-17 | 2011-09-29 | Com-Pac International, Inc. | Reclosable bag with tear open feature |
US7163706B2 (en) * | 1998-11-06 | 2007-01-16 | Velcro Industries B.V. | Ventilated closure strips for use in packaging food products |
US6110512A (en) * | 1998-11-25 | 2000-08-29 | Kraft Foods, Inc. | Package and merchandiser |
US6224262B1 (en) * | 1999-03-08 | 2001-05-01 | Innoflex Incorporated | Bag with perforated opening and reinforcing patch |
US6360513B1 (en) | 1999-05-11 | 2002-03-26 | Sargento Foods Inc. | Resealable bag for filling with food product(s) and method |
US7067037B2 (en) | 1999-10-12 | 2006-06-27 | Com-Pac International, Inc | Modular reciprocating heat seal jaw assembly |
US6439771B1 (en) | 2000-03-15 | 2002-08-27 | Webster Industries Division Chelsea Industries, Inc. | Zippered resealable closure |
DE60113864T2 (en) * | 2000-10-10 | 2006-07-20 | Wizzoz Pty Ltd. | PAIRING DEVICE |
JP4805742B2 (en) * | 2006-07-19 | 2011-11-02 | 出光ユニテック株式会社 | Packaging bag with zipper tape |
US10251794B2 (en) | 2014-08-04 | 2019-04-09 | Grupo P.I. Mabe, S.A. De C.V. | Bag for packing disposable hygiene items |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1010738A (en) * | 1962-05-17 | 1965-11-24 | Flexigrip Ltd | Improvements relating to flexible strip fasteners |
EP0302144A2 (en) * | 1987-08-06 | 1989-02-08 | Minigrip Europe Gmbh | Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure |
Family Cites Families (10)
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US2546698A (en) * | 1943-10-20 | 1951-03-27 | Nicolic Charles | Sheet material with weakened tearing line |
US3181583A (en) * | 1962-09-24 | 1965-05-04 | Daniel J Lingenfelter | Reclosable plastic container |
AT268986B (en) * | 1965-12-11 | 1969-02-25 | Minigrip Europ Akt | Bag made from weldable plastic film |
US3827472A (en) * | 1969-12-05 | 1974-08-06 | Seisan Nipponsha Kk | Reclosable bag |
US3780781A (en) * | 1971-09-07 | 1973-12-25 | Seisan Nipponsha Kk | Openable bag |
US4003184A (en) * | 1975-04-28 | 1977-01-18 | Shiu Thomas B | Method and apparatus for packaging sliced bacon and the like |
US3991801A (en) * | 1975-06-23 | 1976-11-16 | Steven Ausnit | Plastic fasteners with connecting web |
US4285376A (en) * | 1977-07-07 | 1981-08-25 | Minigrip, Inc. | Reclosable plastic bag construction made from a one piece extrusion |
US4191230A (en) * | 1978-02-16 | 1980-03-04 | Minigrip, Inc. | Integral extruded construction for bags |
DE2914206C2 (en) * | 1979-04-09 | 1981-11-19 | Seibt & Kapp, Maschinenfabrik, Gudrun-Wäschereimaschinen, 7000 Stuttgart | Transport bag |
-
1989
- 1989-03-23 US US07/327,619 patent/US5026563A/en not_active Expired - Fee Related
-
1990
- 1990-03-19 NZ NZ232970A patent/NZ232970A/en unknown
- 1990-03-19 CA CA002012489A patent/CA2012489A1/en not_active Abandoned
- 1990-03-20 JP JP2068556A patent/JPH02296656A/en active Pending
- 1990-03-20 EP EP90105231A patent/EP0388884A1/en not_active Ceased
- 1990-03-22 AU AU52160/90A patent/AU624488B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1010738A (en) * | 1962-05-17 | 1965-11-24 | Flexigrip Ltd | Improvements relating to flexible strip fasteners |
EP0302144A2 (en) * | 1987-08-06 | 1989-02-08 | Minigrip Europe Gmbh | Reclosable bag having an outer reclosable zipper type closure and inner non-reclosable closure |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0441504A1 (en) * | 1990-02-05 | 1991-08-14 | Oscar Mayer Foods Corporation | Saddle zipper recloseable package |
EP0508899A1 (en) * | 1991-04-11 | 1992-10-14 | Illinois Tool Works Inc. | Improved seal system for block cheese |
EP0547966A1 (en) * | 1991-12-17 | 1993-06-23 | Minigrip, Incorporated | Tamper-evident zipper closed package |
Also Published As
Publication number | Publication date |
---|---|
AU5216090A (en) | 1990-09-27 |
JPH02296656A (en) | 1990-12-07 |
AU624488B2 (en) | 1992-06-11 |
NZ232970A (en) | 1992-02-25 |
CA2012489A1 (en) | 1990-09-23 |
US5026563A (en) | 1991-06-25 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 19900418 |
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Effective date: 19920601 |
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18R | Application refused |
Effective date: 19931220 |