US4071597A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container with improved heat-shrunk cellular sleeve
Assignee: OI Glass Inc
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Filing: 1976-02-03
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Granted: 1978-01-31
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Expires: 1996-02-03
Abstract
Abstract There is disclosed herein improved packages, and methods of forming same, of the type wherein a container, such as for example a glass container, like a bottle or jar, is provided externally thereof with a heat-shrunk, cellular thermoplastic member, circumferentially and snugly engaging a sidewall portion of the container; the improvement resides in employing, as the thermoplastic member, a composite structure, or laminate, of a closed cellular polymeric layer preponderantly of polystyrene having incorporated therein from zero weight percent up to compatible amounts of a copolymer of ethylene and an alkyl ester of alpha-beta monoethylenically unsaturated carboxylic acid or a copolymer of ethylene and vinyl acetate or a copolymer of ethylene and an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof, and, in adhered relationship to said cellular layer, a layer of a noncellular polymeric material preponderantly of ethylene moieties having incorporated therein moieties of vinyl acetate, or an alkyl ester of alpha-beta monoethylenically unsaturated carboxylic acid, or an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof.
Inventors
- 👤 James A. Karabedian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
B; B65; B65D; B65D23/00; B65D23/08; B65D23/0842; B65D23/0878; Y; Y10; Y10S; Y10S215/00; Y10S215/06; Y10S428/00; Y10S428/91; Y10S428/913; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/1328; Y10T428/249921; Y10T428/249953; Y10T428/249976; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
215 words
In a method wherein a heat-shrinkable, polymeric sheet is formed into a sleeve, having a major orientation circumferentially of said sleeve, and the sleeve telescopically located abut the sidewall of a container and heat-shrunk into snug engagement with said sidewall, the improvement wherein said polymeric sleeve is a composite structure of two adhering layers comprising a closed cellular polymeric layer preponderantly of polystyrene having incorporated therein, in an amount from zero weight percent up to compatible amounts, a copolymer of ethylene and vinyl acetate, or a copolymer of ethylene and an alkyl ester of an alpha-beta monoethylenically unsaturated carboxylic acid, or a copolymer of ethylene and an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof, and a non-cellular polymeric layer having preponderantly ethylene moieties and incorporated therein moieties of vinyl acetate, or an alkyl ester of an alpha-beta monoethylenically unsaturated carboxylic acid, or an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof, the amount of said incorporated moieties in said non-cellular layer being sufficient to promote the adhesion of said layers to the extent that a portion of said cellular layer cohesively fails when said layers are peeled apart, said cellular layer being in snug engagement with said wall and said non-cellular layer being disposed outwardly of said cellular layer and in adhering engagement therewith.
Claim 2
Dependent Claim
215 words
In a method wherein a heat-shrinkable, polymeric sheet is formed into a sleeve, having a major orientation circumferentially of said sleeve, and the sleeve telescopically located abut the sidewall of a container and heat-shrunk into snug engagement with said sidewall, the improvement wherein said polymeric sleeve is a composite structure of two adhering layers comprising a closed cellular polymeric layer preponderantly of polystyrene having incorporated therein, in an amount from zero weight percent up to compatible amounts, a copolymer of ethylene and vinyl acetate, or a copolymer of ethylene and an alkyl ester of an alpha-beta monoethylenically unsaturated carboxylic acid, or a copolymer of ethylene and an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof, and a non-cellular polymeric layer having preponderantly ethylene moieties and incorporated therein moieties of vinyl acetate, or an alkyl ester of an alpha-beta monoethylenically unsaturated carboxylic acid, or an alpha-beta monoethylenically unsaturated carboxylic acid, or mixtures thereof, the amount of said incorporated moieties in said non-cellular layer being sufficient to promote the adhesion of said layers to the extent that a portion of said cellular layer cohesively fails when said layers are peeled apart, said cellular layer being in snug engagement with said wall and said non-cellular layer being disposed outwardly of said cellular layer and in adhering engagement therewith.
Claim 3
Dependent Claim
36 words
The improvement of claim 1 wherein said cellular polymeric layer consists essentially of polystyrene and a copolymer of ethylene and vinyl acetate and said non-cellular polymeric layer consists essentially of ethylene moieties and vinyl acetate moieties.
Claim 4
Dependent Claim
59 words
The improvement of claim 2 wherein said copolymer is a copolymer of about 28 weight percent vinyl acetate and about 72 weight percent ethylene, said copolymer being present in said cellular layer in an amount of about 5 to about 10 weight percent and said polystyrene being present in an amount of about 90 to about 95 weight percent.
Claim 5
Dependent Claim
46 words
The improvement of claim 3 wherein said non-cellular polymeric layer consists essentially of about 60 to about 90 weight percent polyethylene admixed with about 10 to about 40 weight percent of a copolymer of about 28 weight percent vinyl acetate and about 72 weight percent ethylene.
Claim 6
Dependent Claim
28 words
The improvement of claim 1 wherein said cellular polymeric layer consists essentially of polystyrene and said non-cellular layer consists essentially of a copolymer of ethylene and ethyl acrylate.
Claim 7
Dependent Claim
24 words
The improvement of claim 5 wherein said copolymer is a copolymer of about 15 weight percent ethyl acrylate and about 85 weight percent ethylene.
Claim 8
Dependent Claim
25 words
The improvement of claim 1 wherein said cellular layer consists essentially of polystyrene and a copolymer of ethylene and an alpha-beta monoethylenically unsaturated carboxylic acid.
Claim 9
Dependent Claim
18 words
The improvement of claim 1 wherein there is decoration disposed between said cellular layer and said non-cellular layer.
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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) | 1981-01-30 | 1981-08-01 | 1982-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-30 | 1985-08-01 | 1986-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-30 | 1989-08-01 | 1990-01-31 | $7700.00 | Window Closed / Lapsed |