US5520980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective barrier apparel fabric
Assignee: University of Tennessee Research Foundation
•
Filing: 1994-01-31
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Granted: 1996-05-28
•
Expires: 2014-01-31
Abstract
Abstract There is provided a protective barrier apparel fabric comprised of an at least three layer laminate. The first layer being of elastomeric meltblown thermoplastic polymer web, the second layer of a liquid impermeable film and the third layer of liquid permeable material, where the layers are bonded together. The elastomeric meltblown layer may be stitchbonded prior to incorporation into the laminate and/or may be saturated with a latex composition prior to incorporation into the laminate. The laminate provides good MVTR and protection against blood strikethrough.
Inventors
- 👤 Linda J. Morgan
- 👤 Robert D. Harris, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:27
CPC Classifications
A; A41; A41D; A41D31/00; A41D31/04; A41D31/18; A41D31/185; A61; A61B; A61B46/00; A61B46/40; B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; B32B27/12; B32B27/28; B32B27/285; B32B27/36; B32B7/00; B32B2262/00; B32B2262/02; B32B2262/0261; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2437/00; Y; Y10; Y10T; Y10T442/00; Y10T442/40; Y10T442/45; Y10T442/494
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A protective laminate comprising in this order: a first layer of a elastomeric meltblown thermoplastic polyetherester web wherein said polyetherester has the general formula: ##STR2## where "G" is selected from the group consisting of poly(oxyethylene)-alpha,omega-diol, poly(oxypropylene)-alpha,omega-diol, poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; a second layer of liquid impermeable film, wherein said film is a polyetherester, and; a third layer of liquid permeable nylon tricot knit material, wherein said layers are adhesively bonded together, and; wherein said laminate has a MVTR at least 10% higher than an identical laminate without said elastomeric meltblown web layer.
Claim 2
Dependent Claim
97 words
A protective laminate comprising in this order: a first layer of a elastomeric meltblown thermoplastic polyetherester web wherein said polyetherester has the general formula: ##STR2## where "G" is selected from the group consisting of poly(oxyethylene)-alpha,omega-diol, poly(oxypropylene)-alpha,omega-diol, poly(oxytetramethylene)-alpha,omega-diol and "a", "m" and "n" are positive integers; a second layer of liquid impermeable film, wherein said film is a polyetherester, and; a third layer of liquid permeable nylon tricot knit material, wherein said layers are adhesively bonded together, and; wherein said laminate has a MVTR at least 10% higher than an identical laminate without said elastomeric meltblown web layer.
Claim 3
Dependent Claim
28 words
The protective laminate of claim 1 which is present in a surgical gown having seams wherein said laminate is converted into a surgical gown by heat-sealing said seams.
References Cited (Backward Citations)
US3410748A
Cited
US3576703A
Cited
US3849241A
Cited
US3676242A
Cited
US3692618A
Cited
US4194940A
Cited
US4307143A
Cited
US4194041A
Cited
US4296163A
Cited
US4344999A
Cited
US4340563A
Cited
US4426421A
Cited
US4379192A
Cited
US4443511A
Cited
US4526828B1
Cited
US4526828A
Cited
US4969998A
Cited
US4555811A
Cited
US4720415A
Cited
US4663220A
Cited
EP0233995A1
Cited
US4803117A
Cited
US4943475A
Cited
US4692368A
Cited
US4707398A
Cited
US4741949A
Cited
US4801482A
Cited
US4736467A
Cited
US5026591A
Cited
US4857393A
Cited
US4891957A
Cited
US4761324A
Cited
US4761324B1
Cited
US4929492A
Cited
US5061258A
Cited
EP0311316A1
Cited
US4868928A
Cited
US5098770A
Cited
US4877679A
Cited
EP0391661A2
Cited
US5001785A
Cited
US4970259A
Cited
US4935287A
Cited
US5007112A
Cited
US5032450A
Cited
US5036551A
Cited
US5236769A
Cited
US5183702A
Cited
US5332613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-28 | 1999-11-27 | 2000-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-28 | 2003-11-27 | 2004-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-28 | 2007-11-27 | 2008-05-28 | $7700.00 | Window Closed / Lapsed |