Patent ID: 6872442
Filing Date: 2005-03-29
Classification: B03B,B27N,B29B,B29C,B29K,B29L,Y02W,Y10T

Abstract:
1. A sheathing board for use in a concrete form having recycled synthetic wood material as raw materials, wherein synthetic wood materials recycled from a sheathing board made from synthetic wood materials which was already used as concrete form is used as raw materials, the synthetic wood materials has a moisture content of less than 15 wt %, and is a mixture of between 20 and 75 wt % of cellulose crushed materials, and between 25 and 80 wt % of thermoplastic resin molding materials, numerous hollow chambers are formed inside its thickness, extended in a defined direction, at a defined interval, forming a hollowness of between 20 and 70%, and the thickness of the walls delimiting the previously mentioned hollow chambers is greater than 2 mm.