US4606922A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cook-in meat packaging
Assignee: Cryovac LLC
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Filing: 1983-04-21
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Granted: 1986-08-19
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Expires: 2003-04-21
Abstract
Abstract A method is provided for enhancing yield of a cook-in packaged meat product that includes first providing an adhering cook-in container including a flexible thermoplastic envelope being substantially conformable to a contained meat product and having an inner surface of a selectively irradiated ionomer of a metal salt neutralized copolymer of ethylene and acrylic acid or methacrylic acid, then conforming the container about a selected meat product and cooking the packaged product, whereupon the inner surface of the envelope bonds to the meat product to substantially prevent cook-out of fluids. An associated cook-in container is also provided.
Inventors
- 👤 Henry G. Schirmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:52
CPC Classifications
A; A22; A22C; A22C13/00; A22C13/0013; A22C2013/0059
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A method for enhancing yield of a cook-in packaged meat product, comprising: (a) providing an adhering cook-in container including a flexible thermoplastic envelope being substantially conformable to a contained meat product and having an inner meat contacting surface of an ionomer of a metal salt neutralized copolymer of an olefin and a carboxylic acid, said ionomer, while positioned as the inner surface of a flattened tube, having been treated with ionizing radiation to a dosage sufficient to cause bonding with a meat product positioned in contact therewith during cooking of said meat product; (b) conforming said container about a selected meat product; and (c) cooking the packaged product, whereupon said inner surface bonds to said meat product to substantially prevent cook-out of fluids therefrom.
Claim 2
Independent Claim
124 words
A method for enhancing yield of a cook-in packaged meat product, comprising: (a) providing an adhering cook-in container including a flexible thermoplastic envelope being substantially conformable to a contained meat product and having an inner meat contacting surface of an ionomer of a metal salt neutralized copolymer of an olefin and a carboxylic acid, said ionomer, while positioned as the inner surface of a flattened tube, having been treated with ionizing radiation to a dosage sufficient to cause bonding with a meat product positioned in contact therewith during cooking of said meat product; (b) conforming said container about a selected meat product; and (c) cooking the packaged product, whereupon said inner surface bonds to said meat product to substantially prevent cook-out of fluids therefrom.
Claim 3
Dependent Claim
32 words
The method of claim 1 wherein said ionomer is irradiated to a dosage of about 2.5-9 MR and wherein said olefin is ethylene and said acid is acrylic acid or methacrylic acid.
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein said container is selected as a seamless tubular casing and said conforming is by stuffing.
Claim 5
Dependent Claim
35 words
The method of claim 3 wherein said casing is selected as comprising a tubular multi-layer film structure nylon/adhesive/ionomer, further provided that said adhesive is irradiatively cross-linkable and said film structure is irradiated to said dosage.
Claim 6
Dependent Claim
27 words
The method of claim 2 wherein said container is selected as a heat shrinkable bag and said conforming is by container shrinkage upon initiation of said cooking.
Claim 7
Dependent Claim
27 words
The method of claim 5 wherein said bag is selected as comprising a tubular multi-layer film structure EVA/ionomer and said film structure is irradiated to said dosage.
Claim 8
Dependent Claim
17 words
The method of claim 6 wherein said bag is selected as comprising the multi-layer film structure EVA/Saran/EVA/ionomer.
Claim 9
Dependent Claim
24 words
The method of claim 5 wherein said cooking is by immersion in water at about 70°-80° C. or in steam for about 4-6 hours.
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |