Composite board including core and capstock, and associated method
AssigneeThe AZEK Group LLC
InventorsNicholas Tomko, Evan Kemp
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Abstract
A composite board, including a core, and a capstock positioned to at least partially cover the core, where the capstock includes 10 wt. % to 70 wt. % of polyvinyl chloride (PVC), based on a total weight of the capstock, 1 wt. % to 60 wt. % of acrylonitrile-styrene-acrylate (ASA), based on the total weight of the capstock, 1 wt. % to 60 wt. % of styrene-acrylonitrile (SAN), based on the total weight of the capstock, and 1 wt. % to 60 wt. % of a thermoplastic elastomer, where the thermoplastic elastomer includes styrene-isobutylene-styrene (SIBS), a thermoplastic copolyester elastomer, a polymeric plasticizer, and combinations thereof, wherein the capstock does not include thermoplastic polyurethane.
Claims3
A composite board, comprising:
- a core;
- and
- a capstock positioned to at least partially cover the core,
- wherein the capstock consists of, based on a total weight of the capstock:
- 30 wt. % to 45 wt. % of polyvinyl chloride (PVC);
- 20 wt. % to 30 wt. % of acrylonitrile-styrene-acrylate (ASA);
- 15 wt. % to 20 wt. % of styrene-acrylonitrile (SAN);
- and
- 10 wt. % to 25 wt. % of a polymeric plasticizer,
- wherein the polymeric plasticizer consists of a ketone ethylene ester terpolymer.
A composite board, comprising:
- a core;
- and
- a capstock positioned to at least partially cover the core,
- wherein the capstock consists of, based on a total weight of the capstock:
- 30 wt. % to 50 wt. % of polyvinyl chloride (PVC);
- 20 wt. % to 40 wt. % of acrylonitrile-styrene-acrylate (ASA);
- 10 wt. % to 30 wt. % of styrene-acrylonitrile (SAN);
- and
- 5 wt. % to 30 wt. % of a polymeric plasticizer,
- wherein the polymeric plasticizer consists of a ketone ethylene ester terpolymer.
Dependencies are inferred from the claim text.