Patent ID: 6153308
Filing Date: 2000-11-28
Classification: A22C,B32B,Y10S,Y10T

Abstract:
A multilayered biaxially-oriented styrene-containing resin sheet comprising: a styrene-containing resin layer (A) as at least two outer layers formed by the polymerization of an aromatic vinyl compound and an ethylene-containing unsaturated carboxylic acid as the essential monomers where the weight proportion of said ethylene-containing unsaturated carboxylic acid is in the range of from 1 to 3.5% and a styrene-containing resin layer (B) which is sandwiched between said outer layers and which is formed from a styrene-containing resin for which the loss tangent (tan .delta.) maximum peak value temperature for dynamic viscoelasticity measurement is from 6.5 to 25.degree. C. lower than that for the resin of said resin layer (A).