US4157415A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated panel construction and method of making same
Assignee: Individual
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Filing: 1977-11-07
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Granted: 1979-06-05
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Expires: 1997-11-07
Abstract
Abstract A laminated panel construction comprises a base panel preferably comprising a propylene polymer and a filler, a non-woven fabric mechanically anchored to a surface of the base panel and a thermoplastic foil secured to the non-woven fabric by an adhesive material. The non-woven fabric is secured to the surface of the base panel by pressing the base panel and non-woven fabric together at elevated heat and pressure. The base panel with the non-woven fabric secured thereto may be shaped into a predetermined configuration before the thermoplastic foil is adhesively bonded to the non-woven fabric.
Inventors
- 👤 Hugo Lindenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/12; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24479; Y10T428/24496; Y10T428/24595; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/652; Y10T442/653; Y10T442/699
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
92 words
A molded laminated panel construction comprising: (a) a base panel of predetermined stable configuration and comprising a thermoplastic propylene-containing polymer and a filler, said filler comprising a cellulose-containing material, (b) a non-woven expansible fabric mechanically anchored to and extending as a continuous unbroken layer over a surface of said base panel, said fabric being selected from the group consisting of synthetic and natural fibers, (c) a thermoplastic foil having a surface thereof secured to said non-woven fabric by an adhesive material such that said foil surface and non-woven fabric are maintained coextensive.
Claim 2
Dependent Claim
92 words
A molded laminated panel construction comprising: (a) a base panel of predetermined stable configuration and comprising a thermoplastic propylene-containing polymer and a filler, said filler comprising a cellulose-containing material, (b) a non-woven expansible fabric mechanically anchored to and extending as a continuous unbroken layer over a surface of said base panel, said fabric being selected from the group consisting of synthetic and natural fibers, (c) a thermoplastic foil having a surface thereof secured to said non-woven fabric by an adhesive material such that said foil surface and non-woven fabric are maintained coextensive.
Claim 3
Dependent Claim
16 words
A laminated panel construction as defined in claim 1 wherein said propylene containing polymer is polypropylene.
Claim 4
Dependent Claim
28 words
A laminated panel construction as defined in claim 1 wherein said non-woven fabric is an expansible fleece selected from the group consisting of synthetic wool and natural wool.
Claim 5
Dependent Claim
20 words
A laminated panel construction as defined in claim 3 wherein the density of said non-woven fabric is about 20-40 g/qm.
Claim 6
Dependent Claim
33 words
A laminated panel construction as defined in claim 1 wherein said thermoplastic foil is selected from the group consisting of a tension-proof plastic foil and a foam plastic foil suitable for deep drawing.
Claim 7
Dependent Claim
18 words
A laminated panel construction as defined in claim 1 wherein said filler cellulose-containing material is finely divided wood.
Claim 8
Dependent Claim
16 words
A laminated panel construction as defined in claim 1 wherein said thermoplastic foil comprises polyvinyl chloride.
Claim 9
Independent Claim
148 words
A method of producing a molded laminated panel construction comprising the steps in sequence of: (a) compressing a non-woven expansible fabric, selected from the group consisting of synthetic and natural fibers, onto a surface of a base panel, comprising a thermoplastic propylene-containing polymer, and a filler, comprising a cellulose-containing material, under high pressure while said base panel and fabric are maintained at a temperature of about 150° C. to 250° C. to mechanically anchor said non-woven fabric to said surface of said base panel, (b) molding said base panel with said non-woven fabric secured to the surface thereof into a predetermined stable configuration with said non-woven fabric extending as a continuous unbroken layer over said base panel surface, and then securing a surface of a thermoplastic foil to said non-woven fabric by means of an adhesive material such that said foil surface and non-woven fabric are maintained coextensive.
Claim 10
Independent Claim
148 words
A method of producing a molded laminated panel construction comprising the steps in sequence of: (a) compressing a non-woven expansible fabric, selected from the group consisting of synthetic and natural fibers, onto a surface of a base panel, comprising a thermoplastic propylene-containing polymer, and a filler, comprising a cellulose-containing material, under high pressure while said base panel and fabric are maintained at a temperature of about 150° C. to 250° C. to mechanically anchor said non-woven fabric to said surface of said base panel, (b) molding said base panel with said non-woven fabric secured to the surface thereof into a predetermined stable configuration with said non-woven fabric extending as a continuous unbroken layer over said base panel surface, and then securing a surface of a thermoplastic foil to said non-woven fabric by means of an adhesive material such that said foil surface and non-woven fabric are maintained coextensive.
Claim 11
Dependent Claim
14 words
A method as defined in claim 8 wherein said propylene containing polymer is polypropylene.
Claim 12
Dependent Claim
26 words
A method as defined in claim 8 wherein said non-woven fabric is an expansible fleece selected from the group consisting of synthetic wool and natural wool.
Claim 13
Dependent Claim
18 words
A method as defined in claim 8 wherein the density of said non-woven fabric is about 20-40 g/qm.
Claim 14
Dependent Claim
31 words
A method as defined in claim 8 wherein said thermoplastic foil is selected from the group consisting of a tension-proof plastic foil and a foam plastic foil suitable for deep drawing.
Claim 15
Dependent Claim
15 words
A method as defined in claim 8 wherein said cellulose-containing material is finely divided wood.
Claim 16
Dependent Claim
14 words
A method as defined in claim 8 wherein said thermoplastic foil comprises polyvinyl chloride.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-04 | 1982-12-04 | 1983-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-04 | 1986-12-04 | 1987-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-04 | 1990-12-04 | 1991-06-05 | $7700.00 | Window Closed / Lapsed |