US4254869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Merchandising package for containers and method of making
Assignee: OI Glass Inc
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Filing: 1979-07-12
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Granted: 1981-03-10
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Expires: 1999-07-12
Abstract
Abstract This invention relates to a method of utilizing a shrink wrap film to shrink wrap a load or group of articles or packages having a surface portion formed of the same material as the shrink wrap film. The load or group is assembled and wrapped with the outer ply of each article or package formed of the shrink wrap film being coated with a release coating which will withstand the heat shrinking and will not fuse to any part of the load or group when subjected to film-shrinking heat when the group is overwrapped with similar film. The wrapped load is thereby heated to shrink the film or laminate about the load, and may thereafter be easily removed.
Inventors
- 👤 Robert J. Heier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:08
CPC Classifications
B; B65; B65D; B65D71/00; B65D71/06; B65D71/08; B65D2571/00; B65D2571/00006; B65D2571/00012; B65D2571/00018; B65D2571/00024; Y; Y10; Y10S; Y10S428/00; Y10S428/91
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
89 words
The method of making a double-wrapped pack comprising the steps of shrink-wrapping a plurality of similarly-shaped articles in a first heat-shrinkable ethylene polymer film to form a first package, assemblying a plurality of said packages to form an aligned group, and shrink-wrapping said aligned group within a second heat-shrinkable ethylene polymer film to form a second package, the contacting interface of one of said films being coated with a thin, substantially-continuous release coating of solvent-based polyamide to facilitate ready separation of said films upon opening of said second package.
Claim 2
Independent Claim
89 words
The method of making a double-wrapped pack comprising the steps of shrink-wrapping a plurality of similarly-shaped articles in a first heat-shrinkable ethylene polymer film to form a first package, assemblying a plurality of said packages to form an aligned group, and shrink-wrapping said aligned group within a second heat-shrinkable ethylene polymer film to form a second package, the contacting interface of one of said films being coated with a thin, substantially-continuous release coating of solvent-based polyamide to facilitate ready separation of said films upon opening of said second package.
Claim 3
Dependent Claim
18 words
The method in accordance with claim 1, wherein at least one ethylene polymer film is a polyethylene film.
Claim 4
Dependent Claim
20 words
The method in accordance with claim 1, wherein both said first and second ethylene polymer films are similar polyethylene films.
Claim 5
Dependent Claim
32 words
The method in accordance with claim 1, wherein both said first and second polymer films are similar polyethylene films comprised of a closed cellular foamed layer laminated to a noncellular film layer.
Claim 6
Dependent Claim
47 words
The method in accordance with claim 1, wherein said first heat-shrinkable ethylene polymer film is decorated and has an essentially continuous coating of solvent-based polyamide over its exterior surfaces, and said second heat-shrinkable ethylene polymer film is devoid of such coating at least on its interior surface.
Claim 7
Dependent Claim
35 words
The method in accordance with claim 1, wherein at least one ethylene polymer film is comprised of a laminated sheet of film and foamed polyethylene having a thickness ranging from about 3 to 20 mils.
Claim 8
Dependent Claim
39 words
The method in accordance with claim 1, wherein both said first and second ethylene polymer films are comprised of similar laminated sheets of film and foamed polyethylene, each sheet having a thickness ranging from about 5 to 15 mils.
Claim 9
Dependent Claim
28 words
The method in accordance with claim 6, wherein said laminated sheet of film and foamed polyethylene comprises a noncellular film layer laminated to a closed cellular foamed layer.
Claim 10
Dependent Claim
22 words
The method in accordance with claim 1, wherein said coating of solvent-based polyamide has a thickness of less than about 1 mil.
Claim 11
Dependent Claim
79 words
A double-wrapped pack comprising an assembled group of first packages each comprising a plurality of similarly-shaped articles in aligned relation wrapped in a first heat-shrinkable ethylene polymer film, said assembled group of said first packages in aligned relation being shrink-wrapped in a second heat-shrinkable ethylene polymer film, the contacting interface of one of said films being coated with a thin, substantially-continuous release coating of solvent-based polyamide to facilitate ready separation of said films upon opening of said second package.
Claim 12
Dependent Claim
79 words
A double-wrapped pack comprising an assembled group of first packages each comprising a plurality of similarly-shaped articles in aligned relation wrapped in a first heat-shrinkable ethylene polymer film, said assembled group of said first packages in aligned relation being shrink-wrapped in a second heat-shrinkable ethylene polymer film, the contacting interface of one of said films being coated with a thin, substantially-continuous release coating of solvent-based polyamide to facilitate ready separation of said films upon opening of said second package.
Claim 13
Dependent Claim
21 words
A double-wrapped pack in accordance with claim 10, wherein both said first and second ethylene polymer films are similar polyethylene films.
Claim 14
Dependent Claim
31 words
A double-wrapped pack in accordance with claim 10, wherein said first heat-shrinkable ethylene polymer film is decorated and has an essentially continuous imperforate coating of solvent-based polyamide over its exterior surfaces.
Claim 15
Dependent Claim
34 words
A double-wrapped pack in accordance with claim 10, wherein both said first and second ethylene polymer films are similar polyethylene films comprised of a closed cellular foamed layer laminated to a noncellular film layer.
References Cited (Backward Citations)
US3620898A
Cited
US3933244A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |