| 摘要 |
PURPOSE:To obtain a transparent biaxially stretched sheet excellent in deep- drawability and strength. CONSTITUTION:A biaxially stretched sheet formed from a resin compsn. comprising a high-impact rubber-modified styrene resin and a transparent styrene resin has an average rubber particle size therein of 0.1 to 5.00mum, an F value of 0.51 to 0.80 as represented by the following formula 1, and a K value of 1.00X10<-6> to 2.25X10<-4> as represented by the following formula 2. Formula 1:F=[C]X[D] (wherein [C] is the concn. of a rubber in the biaxially stretched sheet expressed in wt.%, and [D] is the average rubber particle size in the biaxially stretched sheet expressed in mum). Formula 2:K=[DELTAn]X[t] (wherein [DELTAn] is the birefringence of the biaxially stretched sheet, and [t] is the thickness of the biaxially stretched sheet expressed in mm). |
