US4489126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoformable laminate structure
Assignee: International Paper Co
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Filing: 1983-11-21
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Granted: 1984-12-18
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Expires: 2003-11-21
Abstract
Abstract A moisture-resistant, moldable, thermoformable laminate structure and method of making same is disclosed. The structure comprises a layer of a foamed thermoplastic material having first and second surfaces and a coating of acrylic resin, having a softening temperature greater than approximately 130° C., impregnated fabric bonded to said first and second surfaces.
Inventors
- 👤 James S. Holtrop
- 👤 Richard P. Maurer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:31
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B5/245; B32B27/00; B32B27/12; B32B5/02; B32B5/022; B32B5/024; B32B5/18; B32B7/00; B32B7/04; B32B7/12; B32B2260/00; B32B2260/02; B32B2260/021; B32B2260/04; B32B2260/046; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0228; B32B2266/025; B32B2307/00; B32B2307/70; B32B2307/726; B32B2307/7265; B32B2309/00; B32B2309/02; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249953; Y10T428/249987; Y10T428/249991; Y10T428/249992; Y10T442/00; Y10T442/30; Y10T442/3325; Y10T442/3366
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
55 words
A moisture-resistant, moldable, thermoformable laminate structure comprising: (a) a layer of a foamed thermoplastic material, said layer having first and second surfaces; and (b) a coating bonded to said first and second surfaces; said coating being a resin impregnated fabric; said resin being an acrylic resin having a softening temperature greater than approximately 130° C.
Claim 2
Dependent Claim
55 words
A moisture-resistant, moldable, thermoformable laminate structure comprising: (a) a layer of a foamed thermoplastic material, said layer having first and second surfaces; and (b) a coating bonded to said first and second surfaces; said coating being a resin impregnated fabric; said resin being an acrylic resin having a softening temperature greater than approximately 130° C.
Claim 3
Dependent Claim
29 words
The laminate structure of claim 1 wherein the layer of foamed thermoplastic material is selected from a group consisting of foamed polystyrene, foamed styrene-maleic anhydride polymer and foamed polyethylene.
Claim 4
Dependent Claim
17 words
The laminate structure of claim 1 wherein the layer of foamed thermoplastic material is a foamed polystyrene.
Claim 5
Dependent Claim
13 words
The laminate structure of claim 1 wherein said fabric is a non-woven material.
Claim 6
Dependent Claim
14 words
The laminate structure of claim 1 wherein said fabric is a woven cloth fabric.
Claim 7
Dependent Claim
14 words
The laminate structure of claim 1 wherein said fabric is a non-woven, spunbonded fabric.
Claim 8
Dependent Claim
14 words
The laminate structure of claim 1 wherein said acrylic resin is styrene-methacrylic acid copolymer.
Claim 9
Independent Claim
67 words
A method of fabricating a moisture-resistant, moldable, thermoformable laminate structure comprising: (a) producing a layer of foamed thermoplastic material having first and second surfaces; (b) impregnating fabric with an acrylic resin dissolved within a solvent, the resin having a softening temperature greater than 130° C.; (c) drying the resin impregnated fabric; and (d) bonding the resin impregnated fabric to the thermoplastic material to form a laminate structure.
Claim 10
Independent Claim
67 words
A method of fabricating a moisture-resistant, moldable, thermoformable laminate structure comprising: (a) producing a layer of foamed thermoplastic material having first and second surfaces; (b) impregnating fabric with an acrylic resin dissolved within a solvent, the resin having a softening temperature greater than 130° C.; (c) drying the resin impregnated fabric; and (d) bonding the resin impregnated fabric to the thermoplastic material to form a laminate structure.
Claim 11
Dependent Claim
25 words
The method of claim 8 wherein resin impregnated fabric is adhesively bonded to the first and second surfaces of the layer of foamed thermoplastic material.
Claim 12
Dependent Claim
31 words
The method of claim 8 wherein said resin impregnated fabric is heated to a temperature between approximately 130° C. and approximately 180° C. to remove the solvents from the acrylic resin.
Claim 13
Dependent Claim
14 words
The method of claim 8 wherein the acrylic resin is a styrene-methacrylic acid copolymer.
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) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |