US4961978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel closure device for shrinkwraps
Assignee: Kendall Co
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Filing: 1989-03-06
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Granted: 1990-10-09
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Expires: 2009-03-06
Abstract
Abstract A closure device for shrinkwraps comprising a high temperature-resistant, flame-resistant and dimensionally stable backing layer, a cross linked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of the backing layer; a heat-shrinkable film dimensionally smaller than the pressure sensitive adhesive layer positioned on the adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive; and an optional release liner applied so as to protect the exposed pressure sensitive adhesive layer from premature and unwanted contact prior to use.
Inventors
- 👤 Anthony J. Doheny, Jr.
- 👤 James R. Noonan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:50
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; F; F16; F16L; F16L59/00; F16L59/10; B29; B29C; B29C61/00; B29C61/06; B29C61/10; B32B27/06; B32B27/08; B32B27/32; B32B27/34; B32B7/00; B32B7/04; B32B7/06; F16L47/00; F16L47/20; F16L47/22; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1054; F16L58/1063; F16L58/18; F16L58/181; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2262/06; B32B2262/062; B32B2262/10; B32B2262/101; B32B2307/00; B32B2307/30; B32B2307/306; B32B2307/3065; B32B2307/50; B32B2307/542; B32B2307/70; B32B2307/732; B32B2307/734; B32B2307/736; B32B2311/00; B32B2311/24; B32B2323/00; B32B2323/04; B32B2597/00; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/14; Y10T428/1414; Y10T428/24; Y10T428/24752; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2848
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
A closure device comprising: (a) a high temperature-resistant, flame-resistant and dimensionally stable backing layer; (b) a crosslinked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of said backing layer; and (c) a heat-shrinkable film dimensionally smaller than said pressure sensitive adhesive layer applied to said pressure sensitive adhesive layer so as to remain a peripheral area of exposed pressure sensitive adhesive.
Claim 2
Dependent Claim
65 words
A closure device comprising: (a) a high temperature-resistant, flame-resistant and dimensionally stable backing layer; (b) a crosslinked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of said backing layer; and (c) a heat-shrinkable film dimensionally smaller than said pressure sensitive adhesive layer applied to said pressure sensitive adhesive layer so as to remain a peripheral area of exposed pressure sensitive adhesive.
Claim 3
Dependent Claim
27 words
The closure device described in claim 1, further comprising a release sheet dimensionally larger than said backing layer and applied to cover the exposed adhesive containing areas.
Claim 4
Dependent Claim
14 words
The closure device described in claim 1, wherein the heat-shrinkable film is a polyolefin.
Claim 5
Dependent Claim
12 words
The closure device described in claim 3, wherein said polyolefin is polyethylene.
Claim 6
Dependent Claim
39 words
The closure device described in claim 1, wherein said backing layer is selected from the group of high temperature-resistant materials consisting of polyimide aluminum foil, Kevlar fabric, fiberglass fabric, laminates of fiberglass fabric with aluminum foil, and flame-resistant cotton.
Claim 7
Dependent Claim
13 words
The closure device described in claim 5, wherein said backing layer is polyimide.
Claim 8
Dependent Claim
15 words
The closure device described in claim 1, wherein the pressure-sensitive adhesive is a silicone-based adhesive.
Claim 9
Dependent Claim
51 words
A closure device comprising (a) a polyimide backing layer; (b) a silicone based adhesive applied to one surface of said backing layer; and (c) a polyolefinic heat-shrinkable film dimensionally smaller that said silicone adhesive layer, applied to said adhesive layer so as to maintain a peripheral area of exposed silicone adhesive.
Claim 10
Dependent Claim
51 words
A closure device comprising (a) a polyimide backing layer; (b) a silicone based adhesive applied to one surface of said backing layer; and (c) a polyolefinic heat-shrinkable film dimensionally smaller that said silicone adhesive layer, applied to said adhesive layer so as to maintain a peripheral area of exposed silicone adhesive.
Claim 11
Dependent Claim
75 words
A closure device comprising: (a) a 0.5-5 mil thick high temperature resistant, flame-resistant and dimensionally stable backing layer; (b) a 0.5-3 mil thick crosslinked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of said backing layer; and (c) a 10-30 mil thick heat-shrinkable film dimensionally smaller than said pressure sensitive adhesive layer applied to said pressure sensitive adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive.
Claim 12
Dependent Claim
75 words
A closure device comprising: (a) a 0.5-5 mil thick high temperature resistant, flame-resistant and dimensionally stable backing layer; (b) a 0.5-3 mil thick crosslinked, high temperature-resistant, shear-resistant, and flame-resistant pressure sensitive adhesive applied to one surface of said backing layer; and (c) a 10-30 mil thick heat-shrinkable film dimensionally smaller than said pressure sensitive adhesive layer applied to said pressure sensitive adhesive layer so as to maintain a peripheral area of exposed pressure sensitive adhesive.
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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) | 1993-10-08 | 1994-04-09 | 1994-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-08 | 1998-04-09 | 1998-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-08 | 2002-04-09 | 2002-10-09 | $7700.00 | Window Closed / Lapsed |