Patent US4216899A successfully refreshed from Google Patents.
US4216899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic bag handle construction
Assignee: Glad Products Co
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Filing: 1978-12-22
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Granted: 1980-08-12
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Expires: 1998-12-22
Abstract
Abstract A plastic bag having a reinforcing flap formed by folding the bag side wall material upon itself at the upper portion of the bag, a cut out portion in the reinforcing flap defining a carrying handle for said bag and a plurality of weld lines on each side of the carrying handle.
Inventors
- 👤 Ewald A. Kamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:19
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/06; B65D33/08; B65D33/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
227 words
A plastic bag comprising a front wall and a back wall fabricated from a thermoplastic material, said bag being closed at one end and along its sides and being opened at its other end, said open end being characterized in that a portion of said front wall is folded upon itself at said open end transversely along a fold line defining the upper edge of said open end of said bag and being adhered to the unfolded portion of said front wall to form a first reinforcing flap, and a portion of said back wall is folded upon itself at said open end transversely along a fold line defining the upper edge of said open end of said bag and being adhered to the unfolded portion of said back wall to form a second reinforcing flap, a cut out portion disposed in each of said reinforcing flaps and said front and back walls defining a carrying handle for said bag and a plurality of weld lines on each side of said cut out handle extending over at least a portion of the width of each of said reinforcing flaps, said weld lines nearest the carrying handle extending generally perpendicular to the top and bottom of said bag and said weld lines more remote from said carrying handle being directed obliquely toward the lower corners of said bag.
Claim 2
Dependent Claim
227 words
A plastic bag comprising a front wall and a back wall fabricated from a thermoplastic material, said bag being closed at one end and along its sides and being opened at its other end, said open end being characterized in that a portion of said front wall is folded upon itself at said open end transversely along a fold line defining the upper edge of said open end of said bag and being adhered to the unfolded portion of said front wall to form a first reinforcing flap, and a portion of said back wall is folded upon itself at said open end transversely along a fold line defining the upper edge of said open end of said bag and being adhered to the unfolded portion of said back wall to form a second reinforcing flap, a cut out portion disposed in each of said reinforcing flaps and said front and back walls defining a carrying handle for said bag and a plurality of weld lines on each side of said cut out handle extending over at least a portion of the width of each of said reinforcing flaps, said weld lines nearest the carrying handle extending generally perpendicular to the top and bottom of said bag and said weld lines more remote from said carrying handle being directed obliquely toward the lower corners of said bag.
Claim 3
Dependent Claim
13 words
A plastic bag according to claim 1 wherein said thermoplastic material is polyethylene.
Claim 4
Dependent Claim
28 words
A plastic bag according to claim 1 wherein said plastic material is a mixture containing at least about ten percent high density polyethylene admixed with low density polyethylene.
Claim 5
Dependent Claim
18 words
A plastic bag according to claim 1 wherein said cut out portion is of a rotated C-shaped configuration.
Claim 6
Dependent Claim
35 words
A plastic bag according to claim 1 wherein said weld lines constitute an inner weld line, an outer weld line, and at least one middle weld line disposed on each side of said carrying handle.
Claim 7
Dependent Claim
44 words
A plastic bag according to claim 1 wherein said folded portion is adhered to said body portion by a lower transverse weld line and said weld lines on each side of the handle extend from said fold line through said lower transverse weld line.
Claim 8
Dependent Claim
18 words
A plastic bag according to claim 1 wherein said weld lines are substantially straight and continuous weld lines.
Claim 9
Dependent Claim
20 words
A plastic bag according to claim 1 wherein at least one weld line is formed by the application of adhesive.
Claim 10
Dependent Claim
22 words
A plastic bag according to claim 1 wherein at least one weld line is formed by the formation of a heat seal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-08-12 | 1984-02-11 | 1984-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-12 | 1988-02-11 | 1988-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-12 | 1992-02-11 | 1992-08-12 | $7700.00 | Window Closed / Lapsed |