US4546882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package having oil-containing product
Assignee: Pechiney Plastic Packaging Inc
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Filing: 1983-02-07
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Granted: 1985-10-15
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Expires: 2003-02-07
Abstract
Abstract An improved package, including an oil-containing product, includes a multiple layer packaging sheet material which is free from cockling. The multiple layer sheet material includes a layer which is susceptible to being swelled when in contact with oil, giving a cockled appearance. With reference to the package structure, the sheet material also includes an oil barrier layer between the oil-containing product and the layer which is susceptible to being swelled when in contact with oil. The barrier layer comprises either nylon or ethylene vinyl alcohol.
Inventors
- 👤 Joseph C. Hsu
- 👤 George O. Schroeder
- 👤 Robert A. Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:07
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B29; B29C; B29C48/00; B29C48/16; B29C48/18; B29C48/185; B32B15/00; B32B15/04; B32B15/08; B32B15/085; B32B27/12; B32B27/30; B32B27/306; B32B27/32; B32B7/00; B32B7/04; B32B7/12; B65; B65D; B65D75/00; B65D75/26; B29C48/03; B29C48/07; B29C48/08; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2323/00; B32B2323/04; B32B2323/043; B32B2439/00; B32B2439/70
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
103 words
A package comprising a multiple layer flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising: (a) a first layer susceptible to absorption of said oil and swelling upon said absorption of said oil the composition of said first layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene; and (b) a second layer, between said first layer and said product, said second layer being functional as a barrier to transmission of said oil, said second layer being chosen from the group consisting of ethylene vinyl alcohol and nylon.
Claim 2
Dependent Claim
103 words
A package comprising a multiple layer flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising: (a) a first layer susceptible to absorption of said oil and swelling upon said absorption of said oil the composition of said first layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene; and (b) a second layer, between said first layer and said product, said second layer being functional as a barrier to transmission of said oil, said second layer being chosen from the group consisting of ethylene vinyl alcohol and nylon.
Claim 3
Dependent Claim
48 words
A package as in claim 1 and including a third layer, said third layer being functional as a barrer to transmission of oil, said first layer being disposed between said third layer and said product and being chosen from the group consisting of ethylene vinyl alcohol and nylon.
Claim 4
Dependent Claim
14 words
A package as in claim 1 wherein said first layer comprises high density polyethylene.
Claim 5
Dependent Claim
31 words
A package as in claim 2 wherein said sheet material includes a heat sealable layer on the interior of said package, and wherein said package is sealed closed by heat seals.
Claim 6
Dependent Claim
31 words
A package as in claim 3 wherein said sheet material includes a heat sealable layer on the interior of said package, and wherein said package is sealed closed by heat seals.
Claim 7
Dependent Claim
96 words
A package comprising of flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising, from the outside of said package inwardly: (a) an oil-sensitive layer susceptible to absorption of said oil and swelling upon said absorption of said oil, the composition of said oil sensitive layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene: (b) a first adhesive layer; (c) an oil barrier layer comprising either nylon or ethylene vinyl alcohol; (d) a second adhesive layer; and (e) a sealant layer.
Claim 8
Dependent Claim
96 words
A package comprising of flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising, from the outside of said package inwardly: (a) an oil-sensitive layer susceptible to absorption of said oil and swelling upon said absorption of said oil, the composition of said oil sensitive layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene: (b) a first adhesive layer; (c) an oil barrier layer comprising either nylon or ethylene vinyl alcohol; (d) a second adhesive layer; and (e) a sealant layer.
Claim 9
Dependent Claim
106 words
A package comprising a flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising, from the outside of said package inwardly: (a) an abuse resistant layer; (b) a first adhesive layer; (c) an oil-sensitive layer susceptible to absorption of said oil and swelling upon said absorption of said oil, the composition of said oil sensitive layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene; (d) a second adhesive layer; (e) an oil barrier layer comprising either nylon or ethylene vinyl alcohol; (f) a third adhesive layer, and (g) a sealant layer.
Claim 10
Dependent Claim
106 words
A package comprising a flexible packaging sheet material and an included product therein containing an oil, said flexible sheet material comprising, from the outside of said package inwardly: (a) an abuse resistant layer; (b) a first adhesive layer; (c) an oil-sensitive layer susceptible to absorption of said oil and swelling upon said absorption of said oil, the composition of said oil sensitive layer being selected from the group consisting of high density polyethylene and blends of high density polyethylene; (d) a second adhesive layer; (e) an oil barrier layer comprising either nylon or ethylene vinyl alcohol; (f) a third adhesive layer, and (g) a sealant layer.
Claim 11
Dependent Claim
23 words
A package as in claim 1 and including a third layer, said third layer being functional as a barrier to transmission of oil.
Claim 12
Dependent Claim
31 words
A package as in claim 8 wherein said sheet material includes a heat sealable layer on the interior of said package, and wherein said package is sealed closed by heat seals.
Claim 13
Dependent Claim
31 words
A package as in claim 1 wherein said sheet material includes a heat sealable layer on the interior of said package, and wherein said package is sealed closed by heat seals.
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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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |