US4879430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Patterned adherent film structures and process for making
Assignee: HRC PACKAGING RITES Inc
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Filing: 1987-05-14
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Granted: 1989-11-07
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Expires: 2007-05-14
Abstract
Abstract Plastic web materials are provided which are selectively treated in a patterned manner with corona discharge. Methods for making and using such webs are provided. In one aspect, such a web is utilized as the inside surface of a container structure. During meat cook-in, such structure selectively in treated areas adhere to highly proteinaceous material cooked therein.
Inventors
- 👤 Kenneth Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:24
CPC Classifications
B; B29; B29C; B29C59/00; B29C59/10; B65; B65D; B65D81/00; B65D81/34; B29K; B29K2023/00; B29K2067/00; B29K2077/00; B29L; B29L2009/00; B29L2023/00; B29L2023/001; B29L2023/002; Y; Y10; Y10S; Y10S428/00; Y10S428/911; Y10T; Y10T428/00; Y10T428/13; Y10T428/1328; Y10T428/1331; Y10T428/31504; Y10T428/31725; Y10T428/3175; Y10T428/31786; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
46 words
A web of plastic wherein one surface layer thereof has been subjected to patterned corona discharge treatment whereby the face of such surface layer has discontinuous pattern areas therein comprising corona discharge treated areas separated by untreated surface areas adjacent thereto and spacing the treated areas.
Claim 2
Dependent Claim
46 words
A web of plastic wherein one surface layer thereof has been subjected to patterned corona discharge treatment whereby the face of such surface layer has discontinuous pattern areas therein comprising corona discharge treated areas separated by untreated surface areas adjacent thereto and spacing the treated areas.
Claim 3
Dependent Claim
21 words
The web of claim 1 wherein such untreated surface areas in said pattern generally continuously linearly extend over such surface layer.
Claim 4
Dependent Claim
14 words
The web of claim 1 which comprises a single ply film of plastic material.
Claim 5
Dependent Claim
31 words
The web of claim 1 which comprises a laminate of at least two layers, each layer being comprised of a different plastic material that is bonded to each layer adjacent thereto.
Claim 6
Dependent Claim
17 words
A plastic web according to claim 1 wherein the discontinuous pattern includes a regularly occurring repeat design.
Claim 7
Dependent Claim
27 words
A plastic web according to claim 1 wherein the treated areas are bounded by untreated areas providing heat sealing edges for a package constructed by the web.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-06 | 1993-05-08 | 1993-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-06 | 1997-05-08 | 1997-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-06 | 2001-05-08 | 2001-11-07 | $7700.00 | Window Closed / Lapsed |