Patent US4335176A successfully refreshed from Google Patents.
US4335176A
Expired / Lapsed
US
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Bonded needled fiber glass thermoplastic reinforced mats
Assignee: Azdel Inc
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Filing: 1980-11-24
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Granted: 1982-06-15
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Expires: 2000-11-24
Abstract
Abstract A stampable thermoplastic fiber glass reinforced product is shown which contains immediately below the resin surface on both major surfaces spikes of glass fibers integral with a mat. Utilization of the spikes with reference to the laminate surface produces laminates having improved stamping characteristics.
Inventors
- 👤 John A. Baumann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:40
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; B29; B29C; B29C37/00; B29C37/0078; B29C37/0082; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/086; B29C70/28; B29C70/40; B29C70/50; B29C70/504; B32B27/32; B32B27/34; B32B27/36; B32B5/00; B32B5/22; B32B5/24; B32B5/26; B32B5/28; D; D04; D04H; D04H1/00; D04H1/40; D04H1/44; D04H1/46; D04H1/48; B29K; B29K2101/00; B29K2101/12; B29K2105/00; B29K2105/06; B29K2105/08; B29K2105/0854; B32B2262/00; B32B2262/10; B32B2262/101; B32B2323/00; B32B2323/10; B32B2367/00; B32B2377/00; B32B2601/00; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/24995; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/666; Y10T442/667; Y10T442/67; Y10T442/682
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
75 words
A stampable laminate product comprising two mats of glass fibers, said mats being constructed from continuous strands which have been needled and which have a spike surface and a non-spike surface, said mats being oriented in the laminate so that the spike surface of each mat faces the surface of the laminate and wherein the needled mats are impregnated with molten thermoplastic resin which is subsequently coated to provide a laminate having thermoplastic resin surfaces.
Claim 2
Dependent Claim
75 words
A stampable laminate product comprising two mats of glass fibers, said mats being constructed from continuous strands which have been needled and which have a spike surface and a non-spike surface, said mats being oriented in the laminate so that the spike surface of each mat faces the surface of the laminate and wherein the needled mats are impregnated with molten thermoplastic resin which is subsequently coated to provide a laminate having thermoplastic resin surfaces.
Claim 3
Dependent Claim
23 words
The product of claim 1 wherein the thermoplastic resin is a member of the group consisting of nylon, polypropylene, polybutyleneterephthalate, polyethyleneterephthalate and polyethylene.
Claim 4
Dependent Claim
12 words
The laminate product of claim 1 wherein the thermoplastic resin is nylon.
Claim 5
Dependent Claim
11 words
The product of claim 1 wherein the thermoplastic resin is polypropylene.
Claim 6
Dependent Claim
11 words
The product of claim 1 wherein the thermoplastic resin is polybutyleneterephthalate.
Claim 7
Dependent Claim
11 words
The product of claim 1 wherein the thermoplastic resin is polyethyleneterephthalate.
Claim 8
Dependent Claim
90 words
A stampable fiber glass reinforced thermoplastic resin laminate having two major surfaces and containing at least two fiber glass mats therein, each of said mats having a spiked major surface and a non-spiked major surface, said mats being oriented in the laminate with their non-spiked surfaces facing each other and each of the spiked mats being impregnated throughout with molten thermoplastic resin and subsequently cooled so that the spiked surfaces of each of the mats is positioned immediately below each of the major surfaces of the resulting thermoplastic resin laminate.
Claim 9
Dependent Claim
90 words
A stampable fiber glass reinforced thermoplastic resin laminate having two major surfaces and containing at least two fiber glass mats therein, each of said mats having a spiked major surface and a non-spiked major surface, said mats being oriented in the laminate with their non-spiked surfaces facing each other and each of the spiked mats being impregnated throughout with molten thermoplastic resin and subsequently cooled so that the spiked surfaces of each of the mats is positioned immediately below each of the major surfaces of the resulting thermoplastic resin laminate.
Claim 10
Dependent Claim
25 words
The thermoplastic resin sheet of claim 7, wherein the thermoplastic resin is a member of the group consisting of nylon, polypropylene, polybutyleneterephthalate, polyethyleneterephthalate and polyethylene.
Claim 11
Dependent Claim
16 words
The thermoplastic resin sheet of claim 7 wherein the thermoplastic resin is nylon thermoplastic resin sheet.
Claim 12
Dependent Claim
11 words
The product of claim 7 wherein the thermoplastic resin is polypropylene.
Claim 13
Dependent Claim
11 words
The product of claim 7 wherein the thermoplastic resin is polybutyleneterephthalate.
Claim 14
Dependent Claim
11 words
The product of claim 7 wherein the thermoplastic resin is polyethyleneterephthalate.
References Cited (Backward Citations)
US3819465A
Cited
US4277531A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |