Weather-resistant synthetic wood material

Details Weather-resistant synthetic wood material Weather-resistant synthetic wood material

2004-12-24

2008-11-04

Vo, Hai (Department: 1794)

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

C428S319700, C428S316600, C428S317900, C428S074000, C428S076000

Reexamination Certificate

active

07445840

ABSTRACT:
The present invention provides a synthetic wood including a body containing a polystyrene- or polypropylene-based resin as the major component and a weather-resistant outer layer with excellent adhesion to the body. A synthetic wood1A includes a body2defining a core thereof and formed of a polystyrene or polypropylene foam and an outer layer3covering the body and formed of a weather-resistant synthetic resin that is unfoamed or foamed at a low expansion rate. The body and the outer layer are integrally bonded by coextrusion. The body contains a polystyrene- or polypropylene-based resin as the major component. The outer layer contains an acrylonitrile-acrylic rubber-styrene copolymer and/or an acrylonitrile-ethylene propylene rubber-styrene copolymer, which are weather-resistant resins, as the major component. The outer layer further contains the major component resin of the body as a minor component in such an amount that the minor component contributes to the enhancement of the adhesion between the body and the outer layer without impairing weather resistance.

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Translation of JP 2003-184289, Tsurura et al, “Floorboard”, Jul. 3, 2003.
Translation of JP 2002-347152, Hiromitsu Vabe, “Building Material Made of Foamed Synthetic Resin”, Dec. 4, 2002.
Sawada, Keiji, “Plastic Oshidashi Keisei no Saishin Gijutsu”, 1stedition, Kabushiki Kaisha Raba Daijesuto Sha, pp. 239-244, Jun. 25, 1993.

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