Patent US4692373A successfully refreshed from Google Patents.
US4692373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminate bonded by adhesion promoting layer and adhesive layer
Assignee: BASF SE
•
Filing: 1985-10-02
•
Granted: 1987-09-08
•
Expires: 2005-10-02
Abstract
Abstract A laminate consists of a layer A of a polyolefin, reinforced with from 10 to 50% of glass fiber mats, and a metal layer D, which are bonded to one another by means of a mechanically adhesion-promoting layer B and an adhesive layer C. The adhesive is a thermoplastic polyurethane elastomer, preferably having a melting range of from 110° to 250° C. The laminates are used as automobile components, and as housings and containers.
Inventors
- 👤 Martin Welz
- 👤 Bernhard Czauderna
- 👤 Karl-Heinz Stoffel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:46
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/14; B32B15/04; B32B15/08; B32B7/00; B32B7/04; B32B7/12; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31573; Y10T428/31587; Y10T428/31605; Y10T442/00; Y10T442/60; Y10T442/659; Y10T442/66; Y10T442/668; Y10T442/669; Y10T442/681
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
72 words
A laminate comprising a layer A of a polyolefin, reinforced with from 10 to 50% by weight of glass fiber mats, and a layer D of a metal, which are bonded to one another by means of a mechanically adhesion-promoting layer B and an adhesive layer C, wherein the adhesive is a thermoplastic polyurethane elastomer, wherein the adhesion promoting layer B is a non-woven fabric which is anchored in the polyolefin layer.
Claim 2
Dependent Claim
72 words
A laminate comprising a layer A of a polyolefin, reinforced with from 10 to 50% by weight of glass fiber mats, and a layer D of a metal, which are bonded to one another by means of a mechanically adhesion-promoting layer B and an adhesive layer C, wherein the adhesive is a thermoplastic polyurethane elastomer, wherein the adhesion promoting layer B is a non-woven fabric which is anchored in the polyolefin layer.
Claim 3
Dependent Claim
21 words
A laminate as defined in claim 1, wherein the polyurethane elastomer has a melting range of from 110° to 250° C.
Claim 4
Dependent Claim
23 words
A laminate as defined in claim 1, wherein the mechanically adhesion-promoting layer is a spunbonded fabric or card web consisting of plastic fibers.
Claim 5
Dependent Claim
18 words
A laminate as defined in claim 1, wherein the mechanically adhesion-promoting layer consists of a glass fiber mat.
Claim 6
Dependent Claim
28 words
A laminate as defined in claim 1, wherein the metal layer D consists of a ductile, deformable metal having an elongation at break of not less than 10%.
Claim 7
Dependent Claim
21 words
A laminate as defined in claim 1, wherein the polyurethane elastomer has a melting range of from 180° to 210° C.
Claim 8
Dependent Claim
23 words
A laminate as defined in claim 1, wherein the mechanically adhesion-promoting layer is a spunbonded fabric or card web consisting of polyester fibers.
Claim 9
Dependent Claim
18 words
A laminate as defined in claim 1, wherein the metal layer D consists of aluminum, copper or steel.
References Cited (Backward Citations)
GB1341500A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-09-07 | 1991-03-09 | 1991-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-07 | 1995-03-09 | 1995-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-07 | 1999-03-09 | 1999-09-08 | $7700.00 | Window Closed / Lapsed |