US4346700A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesive sheet material
Assignee: 3M Co
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Filing: 1981-06-15
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Granted: 1982-08-31
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Expires: 2001-06-15
Abstract
Abstract Pressure-sensitive adhesive sheet materials such as tapes and surgical drapes that are skin and joint conformable and comprise a backing consisting essentially of chlorinated polyethylene and a pressure-sensitive adhesive on at least a portion of a surface thereof.
Inventors
- 👤 Wayne K. Dunshee
- 👤 Janice B. Odegaard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:11
CPC Classifications
A; A61; A61L; A61L15/00; A61L15/16; A61L15/22; A61L15/24; A61F; A61F13/00; A61F13/02; A61F13/0203; A61F13/0223; A61F13/0226; A61F13/0259; C; C09; C09J; C09J7/00; C09J7/20; C09J2301/00; C09J2301/10; C09J2301/18; Y; Y10; Y10S; Y10S604/00; Y10S604/905
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
93 words
A conformable adhesive sheet material having viscoelastic properties similar to human skin comprising a backing sheet consisting essentially of chlorinated polyethylene and a pressure sensitive adhesive on at least a portion of at least one surface of said backing sheet, said backing sheet requiring less than about 25×10 6 dynes/cm 2 for an elongation of 20% as tested per ASTM Standard D-882 and having a stress relaxation with time when elongated 20% initially of from about 10% to about 20% after 1 minute and from about 20% to about 50% after 10 minutes.
Claim 2
Dependent Claim
93 words
A conformable adhesive sheet material having viscoelastic properties similar to human skin comprising a backing sheet consisting essentially of chlorinated polyethylene and a pressure sensitive adhesive on at least a portion of at least one surface of said backing sheet, said backing sheet requiring less than about 25×10 6 dynes/cm 2 for an elongation of 20% as tested per ASTM Standard D-882 and having a stress relaxation with time when elongated 20% initially of from about 10% to about 20% after 1 minute and from about 20% to about 50% after 10 minutes.
Claim 3
Dependent Claim
51 words
The conformable adhesive sheet material of claim 1 wherein said backing sheet consists essentially of a blend consisting essentially of from about 50 to 100 percent by weight chlorinated polyethylene and from about 0 to about 50 percent by weight polymeric extender having a higher modulus of elasticity than chlorinated polyethylene.
Claim 4
Dependent Claim
23 words
The conformable adhesive sheet material of claim 2 wherein said backing sheet is a non-woven web of fibers consisting essentially of chlorinated polyethylene.
Claim 5
Dependent Claim
26 words
The conformable adhesive sheet material of claim 2 wherein said backing sheet consists essentially of from about 10% to 30% by weight of said polymeric extender.
Claim 6
Dependent Claim
14 words
The conformable adhesive sheet material of claim 1 wherein said backing sheet is foam.
Claim 7
Dependent Claim
14 words
The conformable sheet material of claim 1 wherein said backing sheet is a film.
Claim 8
Dependent Claim
15 words
The conformable sheet material of claim 1 wherein said sheet material is provided with perforations.
Claim 9
Dependent Claim
99 words
A conformable adhesive surgical drape having viscoelastic properties similar to human skin comprising a backing sheet consisting essentially of chlorinated polyethylene, a pressure sensitive adhesive on at least a portion of at least one surface of said backing sheet, and a release liner covering said adhesive, said backing sheet requiring less than about 25×10 6 dynes/cm 2 for an elongation of 20% as tested per ASTM Standard D-882 and having a stress relaxation with time when elongated 20% initially of from about 10% to about 20% after 1 minute and from about 20% to about 50% after 10 minutes.
Claim 10
Dependent Claim
99 words
A conformable adhesive surgical drape having viscoelastic properties similar to human skin comprising a backing sheet consisting essentially of chlorinated polyethylene, a pressure sensitive adhesive on at least a portion of at least one surface of said backing sheet, and a release liner covering said adhesive, said backing sheet requiring less than about 25×10 6 dynes/cm 2 for an elongation of 20% as tested per ASTM Standard D-882 and having a stress relaxation with time when elongated 20% initially of from about 10% to about 20% after 1 minute and from about 20% to about 50% after 10 minutes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-08-30 | 1986-03-01 | 1986-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-30 | 1990-03-01 | 1990-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-30 | 1994-03-01 | 1994-08-31 | $7700.00 | Window Closed / Lapsed |