US5020922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bone puncture resistant bag
Assignee: Cryovac LLC
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Filing: 1986-03-06
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Granted: 1991-06-04
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Expires: 2006-03-06
Abstract
Abstract A seamless, bone puncture resistant bag is provided that representatively includes a length of lay-flat seamless tubular film folded to a double lay-flat configuration and having all adjacent film surfaces interfacially bonded, respectively, except at one outermost interface. The configuration thus forms a seamless envelope with one face thickened integrally to triple thickness. In a less preferred mode, a similarly reinforced bag is provided but which has either an end-seal or side-seals. Associated methods for making such bags are also provided.
Inventors
- 👤 Henry G. Schirmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:40
CPC Classifications
B; B65; B65D; B65D31/00; B65D31/04; B31; B31B; B31B2155/00; B31B2170/00; B31B2170/20; B65D2275/00; B65D2275/02
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
115 words
A seamless, puncture-resistant thermoplastic bag comprising: (a) a first panel comprising one layer of thermoplastic film; (b) a second panel approximately equal in length to said first panel, and comprising three layers of thermoplastic film; (c) said first and second panels adjoining at seamless bottom and side portions of said bag; (d) an envelope defined by said first and second panels, and suitable for containing a meat product having bone sections; and (e) said three layers of said second panel comprising respectively an outer layer, an intermediate layer, and an inner layer, adjacent surfaces of the outer and intermediate layers being interfacially bonded, and adjacent surfaces of the intermediate and inner layers being interfacially bonded.
Claim 2
Dependent Claim
115 words
A seamless, puncture-resistant thermoplastic bag comprising: (a) a first panel comprising one layer of thermoplastic film; (b) a second panel approximately equal in length to said first panel, and comprising three layers of thermoplastic film; (c) said first and second panels adjoining at seamless bottom and side portions of said bag; (d) an envelope defined by said first and second panels, and suitable for containing a meat product having bone sections; and (e) said three layers of said second panel comprising respectively an outer layer, an intermediate layer, and an inner layer, adjacent surfaces of the outer and intermediate layers being interfacially bonded, and adjacent surfaces of the intermediate and inner layers being interfacially bonded.
Claim 3
Dependent Claim
11 words
The bag of claim 1 further comprising an extended closure lip.
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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) | 1994-06-03 | 1994-12-03 | 1995-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-03 | 1998-12-03 | 1999-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-03 | 2002-12-03 | 2003-06-04 | $7700.00 | Window Closed / Lapsed |