US4515844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Delsolite
Assignee: NYLCO Corp A CORP OF
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Filing: 1984-03-19
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Granted: 1985-05-07
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Expires: 2004-03-19
Abstract
Abstract Footwear insulation material comprising a urethane membrane bonded to a foam layer by an adhesive system. Needle punched fibers are secured to the membrane and extend through and beyond the foam layer. Insulation material has a thermal insulation factor R of between about R18.0 to R19.0.
Inventors
- 👤 Thomas E. Coughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:59
CPC Classifications
B; B32; B32B; B32B29/00; B32B29/002; B32B29/007; A; A43; A43B; A43B17/00; B32B27/00; B32B27/40; B32B5/00; B32B5/18; B32B7/00; B32B7/04; B32B7/06; B32B7/12; B32B2255/00; B32B2255/12; B32B2255/26; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0278; B32B2307/00; B32B2307/30; B32B2307/304; B32B2307/70; B32B2307/724; B32B2437/00; B32B2437/02; Y; Y10; Y10T; Y10T428/00; Y10T428/23907; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249942; Y10T428/249953; Y10T428/249976; Y10T428/249982; Y10T428/249987; Y10T428/249988
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
A footwear insulating composition which comprises: a polyurethane membrane; a layer of polyurethane foam adhesively engaged thereto; a plurality of fibers secured to the membrane extending through and beyond the foam to form a napped surface, the composition having a moisture vapor transmission factor of from 0.35 to 0.60 and a thermal insulation factor of from R15 to R22.
Claim 2
Dependent Claim
59 words
A footwear insulating composition which comprises: a polyurethane membrane; a layer of polyurethane foam adhesively engaged thereto; a plurality of fibers secured to the membrane extending through and beyond the foam to form a napped surface, the composition having a moisture vapor transmission factor of from 0.35 to 0.60 and a thermal insulation factor of from R15 to R22.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the membrane layer is a flexible thermoset polyurethane.
Claim 4
Dependent Claim
14 words
The composition of claim 1 wherein the polyurethane foam is an open cell foam.
Claim 5
Dependent Claim
14 words
The composition of claim 1 wherein the urethane foam is a closed cell foam.
Claim 6
Dependent Claim
10 words
The composition of claim 1 wherein the fibers are polypropylene.
Claim 7
Dependent Claim
27 words
The composition of claim 1 comprising a pressure sensitive thermoset adhesive layer disposed between the membrane and the foam layer to adhesively maintain the same in engagement.
Claim 8
Dependent Claim
13 words
The composition of claim 6 wherein the membrane layer is between 0.0008-0.0012 inch.
Claim 9
Dependent Claim
14 words
The composition of claim 1 wherein the foam layer is between about 0.05-0.07 inch.
Claim 10
Dependent Claim
14 words
The composition of claim 1 wherein the total thickness is between about 0.04-0.08 inch.
Claim 11
Dependent Claim
36 words
The composition of claim 1 wherein the urethane is formed from an isocyanate selected from the group consisting of 2,4 toluene diisocyanate, 4,4 diphenyl methane diisocyanate, isophorone diisocyanate, 2,4 xylene diisocyanate, and 4,4 diiyclohexyl methane diisocyanate.
Claim 12
Independent Claim
113 words
A method for producing a laminated material which comprises: (a) casting a solution of an aliphatic polyether-type thermoset polyurethane in a dried thickness of between 0.0008 and 0.0012 inch; (b) curing said thermoset polyurethane; (c) engaging adhesively a layer of foam material to said membrane, the foam material having a thickness of between 0.04-0.08 inch; (d) needle punching a plurality of fibers through said foam and into the membrane to anchor the same to the membrane, the fibers extending through the non-engaged surface foam to form a napped appearance, the composition as formed having a thermal insulation factor of between R15 to R22 and a moisture vapor transmission factor of 0.35 to 0.60.
Claim 13
Independent Claim
113 words
A method for producing a laminated material which comprises: (a) casting a solution of an aliphatic polyether-type thermoset polyurethane in a dried thickness of between 0.0008 and 0.0012 inch; (b) curing said thermoset polyurethane; (c) engaging adhesively a layer of foam material to said membrane, the foam material having a thickness of between 0.04-0.08 inch; (d) needle punching a plurality of fibers through said foam and into the membrane to anchor the same to the membrane, the fibers extending through the non-engaged surface foam to form a napped appearance, the composition as formed having a thermal insulation factor of between R15 to R22 and a moisture vapor transmission factor of 0.35 to 0.60.
Claim 14
Dependent Claim
36 words
The method of claim 11 wherein the polyurethane is formed from an isocyanate selected from the group consisting of 2,4 toluene diisocyanate, 4,4 diphenyl methane diisocyanate, isophorone diisocyanate, 2,4 xylene diisocyanate, and 4,4 dicyclohexyl methane diisocyanate.
Claim 15
Dependent Claim
22 words
The method of claim 11 which includes: curing the polyurethane at a temperature of between 225° F.-250° F. for approximately 1 minute.
Claim 16
Dependent Claim
13 words
The method of claim 11 wherein the needle punched fibers are polypropylene fibers.
Claim 17
Independent Claim
26 words
The method of claims 11 or 14 wherein said fibers are between 2 to 6 denier and are between 600 to 1400 punches per square inch.
Claim 18
Dependent Claim
13 words
The method of claim 11 wherein the foam material is a reticulated polyurethane.
Claim 19
Dependent Claim
67 words
The composition of claim 1 wherein the polyurethane membrane is a aliphatic polyether-type thermosetting polyurethane, the adhesive is a pressure sensitive acrylic adhesive, the polyurethane foam is a reticulated foam, the membrane layer is between 0.0008-0.0012 inch, the foam layer is between about 0.05-0.07 inch and the fibers are polypropylene fibers between 2 to 6 denier and are between about 600 to 1400 punches per square inch.
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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |