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US4285430A
Expired / Lapsed
US
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Skin package
Assignee: Baker Perkins Holdings Ltd
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Filing: 1979-11-30
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Granted: 1981-08-25
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Expires: 1999-11-30
Abstract
Abstract A skin package wherein an article is enclosed between layers of thermoplastic film joined by heat sealing around the perimeter of the article and including at one side a strip, enclosed between the layers and projecting from them, which is heat sealed to one layer only and is non-adherent or only lightly adherent to the other layer.
Inventors
- 👤 Alan Caunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:36
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/28; B65D75/30; B65B; B65B61/00; B65B61/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
128 words
An air-free skin package consisting of an article enclosed between a generally flat bottom layer of thermoplastic film having a dimpled surface contacting said article and a top layer of thermoplastic film having a domed portion accommodating said article, said layers being heat sealed together in a zone immediately surrounding the entire perimeter of the article and being in close and intimate contact with the entire surface of said article, said package being devoid of any weakened severance line and including, along at least one edge and disposed between said layers, a strip of material which is heat sealed to one only of said layers and extends laterally beyond the other layer so that the package may be opened by separation of the strip from the other layer.
Claim 2
Dependent Claim
128 words
An air-free skin package consisting of an article enclosed between a generally flat bottom layer of thermoplastic film having a dimpled surface contacting said article and a top layer of thermoplastic film having a domed portion accommodating said article, said layers being heat sealed together in a zone immediately surrounding the entire perimeter of the article and being in close and intimate contact with the entire surface of said article, said package being devoid of any weakened severance line and including, along at least one edge and disposed between said layers, a strip of material which is heat sealed to one only of said layers and extends laterally beyond the other layer so that the package may be opened by separation of the strip from the other layer.
Claim 3
Dependent Claim
35 words
A skin package according to claim 1, wherein the strip is of paper carrying at one side only a coating which is capable of forming a heat seal with the contacting layer of the package.
Claim 4
Dependent Claim
30 words
A skin package according to claim 2, wherein the strip carries on the other side a coating incapable of forming a heat seal with the contacting layer of the package.
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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) | 1984-08-24 | 1985-02-23 | 1985-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-24 | 1989-02-23 | 1989-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-24 | 1993-02-23 | 1993-08-25 | $7700.00 | Window Closed / Lapsed |