Laminated, weatherable film-capped siding structure

• US 5,356,705 A
• Filed: 01/09/1992
• Issued: 10/18/1994
• Est. Priority Date: 01/09/1992
• Status: Expired due to Fees

• Current Assignee: Rensselaer Polytechnic Institute
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: Finlayson, Steven E., Kelch, Robert H.
• Primary Examiner(s): SLUBY, PATRICIA
• Application Number:
  US07/819,198
• Time in Patent Office: 1,013 Days
• Field of Search: 428/518, 428/332, 428/520, 428/517, 428/519
• US Class Current: 428/332
• CPC Class Codes: B32B 2307/712 Weather resistant
• CPC Class Codes: B32B 2307/734 Dimensional stability
• CPC Class Codes: B32B 2327/06 PVC, i.e. polyvinylchloride
• CPC Class Codes: B32B 2355/02 ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/30 comprising vinyl (co)polymers; comprising acrylic (co)polymers
• CPC Class Codes: B32B 27/302 comprising aromatic vinyl (co)polymers, e.g. styrenic (co)polymers
• CPC Class Codes: B32B 27/304 comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
• CPC Class Codes: Y10T 428/26 Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
• CPC Class Codes: Y10T 428/31917 Next to polyene polymer
• CPC Class Codes: Y10T 428/3192 Next to vinyl or vinylidene chloride polymer
• CPC Class Codes: Y10T 428/31924 Including polyene monomers
• CPC Class Codes: Y10T 428/31928 Ester, halide or nitrile of addition polymer

Abstract

A laminated weatherable film-capped siding structure with improved dimensional stability and having a reduced incidence of oil canning. The structure comprises a polymeric structure and a weatherable film of uniform gauge having at least one weatherable layer consisting essentially of a weatherable styrene acrylonitrile copolymer impact-modified with olefinic elastomer or acrylic elastomer.

Claims

1. A laminated weatherable film-capped siding structure with improved dimensional stability and having a reduced incidence of oil canning comprising

(a) a polymeric substrate;

and

(b) a weatherable film extruded separately from said polymeric substrate and thermally laminated to said polymeric substrate, said weatherable film having at least one weatherable layer consisting essentially of a weatherable styrene acrylonitrile copolymer impact-modified with olefinic elastomer or acrylic elastomer, and said weatherable film having a uniform gauge.

2. The structure of claim 1 wherein said weatherable film is compatible with the polymeric substrate.

3. The structure of claim 1 wherein said polymeric substrate consists essentially of poly(vinyl chloride).

4. The structure of claim 1 wherein the thickness of said weatherable film is from about 2 mils to about 10 mils.

5. The structure of claim 1 wherein said polymeric substrate consists essentially of an impact modified polystyrene or acrylonitrile-butadiene-styrene copolymer.