Patent US4917100A successfully refreshed from Google Patents.
Patent US5014852A successfully refreshed from Google Patents.
US5014852A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pad of bags
Assignee: Pactiv LLC
•
Filing: 1990-01-11
•
Granted: 1991-05-14
•
Expires: 2010-01-11
Abstract
Abstract A pad of a plurality of sealable-unsealable bags comprising a stack of the bags, each bag comprising a front and rear wall closed at the sides and bottom and having a region of access to between the walls; a closure flap as an integral extension of the back wall, the flap having an inside and an outside surface relative to the bag in its sealed condition; an adhesive region located on a portion of the inside surface of the flap; and at least the adhesive-bearing portion of said flap being reverse-folded, outside surface-to-outside surface and the adhesive-bearing inside surface positioned in releasable adhesive contact with a non-adhesive bearing portion of the inside surface of the flap of a preceding bag in the stack.
Inventors
- 👤 Fox J. Herrington
- 👤 James P. O'Sullivan, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:11
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/62; B65D57/00; B65D57/002; B65D57/003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
146 words
A pad of a plurality of sealable-unsealable bags comprising: a stack of bags, each bag comprising: a front and rear wall closed at the sides and bottom and having a region of access to between said walls; a closure flap as an integral extension of said rear wall, said closure flap having an inside and an outside surface relative to said bag in its sealed condition the inside surface being that surface adjacent said front wall; an adhesive region located on a portion of the inside surface of said flap; and at least the adhesive-bearing portion of the flap of each bag being reverse-folded, outside surface-to-outside surface so that the adhesive-bearing portion of the inside surface of said closure flap is positioned in releasable adhesive contact with a non-adhesive bearing portion of an inside surface of another closure flap of a preceeding bag in said stack.
Claim 2
Dependent Claim
146 words
A pad of a plurality of sealable-unsealable bags comprising: a stack of bags, each bag comprising: a front and rear wall closed at the sides and bottom and having a region of access to between said walls; a closure flap as an integral extension of said rear wall, said closure flap having an inside and an outside surface relative to said bag in its sealed condition the inside surface being that surface adjacent said front wall; an adhesive region located on a portion of the inside surface of said flap; and at least the adhesive-bearing portion of the flap of each bag being reverse-folded, outside surface-to-outside surface so that the adhesive-bearing portion of the inside surface of said closure flap is positioned in releasable adhesive contact with a non-adhesive bearing portion of an inside surface of another closure flap of a preceeding bag in said stack.
Claim 3
Dependent Claim
16 words
The pad of claim 1 wherein said bags are comprised of an organic polymeric film material.
Claim 4
Dependent Claim
13 words
The pad of claim 2 wherein said adhesive is a pressure sensitive adhesive.
Claim 5
Dependent Claim
29 words
The pad of claim 3 wherein the adhesive will preferentially adhere to its original region of application as compared to its adhesion to any other region of said bag.
Claim 6
Dependent Claim
14 words
The pad of claim 4 wherein said bags are at least generally in registration.
Claim 7
Dependent Claim
47 words
The pad of claim 3 wherein the inside surface of the region of polymeric film intended to receive the pressure sensitive adhesive, has been treated so as to cause preferential adhesion of the adhesive to the treated surface as compared with its adhesion to untreated film surfaces.
Claim 8
Dependent Claim
33 words
The pad of claim 5 wherein said inside surface has been treated by corona discharge means or by application of a binder material or both prior to application of a pressure sensitive adhesive.
Claim 9
Dependent Claim
103 words
The pad of claim 5 wherein said pressure sensitive adhesive includes inherently tacky copolymer microspheres consisting essentially of: a. about 90 to about 99.5 percent by weight of one or more oleophilic, water-emulsifiable alkyl acrylate esters, at least on of said esters being selected form the group consisting of iso-octyl acrylate, 4-methyl-2-pentyl acrylate, 2-methylbutyl acrylate, and sec-butyl acrylate and correspondingly b. about 10 to about 0.5 percent by weight of one or more monomers selected from the group consising of trimethylamine methacrylimide, trimethylamine p-vinyl benzimide, ammonium acrylate, sodium acrylate, N,N-dimethyl-N-(-methyacryloxyethyl) ammonium propionate betaine, 1,1-dimethyl-1-(2-hydroxypropyl) amine methacrylimide, 4,4,9-trimethyl-4-azonia-7-oxo-8-oxa-9-decene-1-sulphonate, 1,1-dimethyl-1-(2,3-dihydroxypropyl) amine methacrylimide, and maleic anhydride.
Claim 10
Dependent Claim
63 words
The pad of claim 2 wherein the reverse-fold line of each bag is spaced from the bottom of the bag a farther distance than the distance from the bottom of said bag to the top edge of the front wall of said bag so as to provide a slide panel to facilitate sliding objects to said region of access and into said bag.
References Cited (Backward Citations)
US3309007A
Cited
US2715493A
Cited
US2709467A
Cited
US2842179A
Cited
US3348762A
Cited
US3420433A
Cited
US3510052A
Cited
GB1331643A
Cited
US3857731A
Cited
US3990627A
Cited
US3915302A
Cited
GB2066208A
Cited
US4332347A
Cited
US4513445A
Cited
US4502599A
Cited
US4630891A
Cited
US4677684A
Cited
US4790670A
Cited
US4630310A
Cited
US4674634A
Cited
US4785940A
Cited
US4759643A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-13 | 1994-11-12 | 1995-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-13 | 1998-11-12 | 1999-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-13 | 2002-11-12 | 2003-05-14 | $7700.00 | Window Closed / Lapsed |