| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyester-based multilayered sheet, which is excellent in container formability and can form a low temperature impact resistant and high heat resistant container-formed piece, and its formed piece. SOLUTION: This multilayered sheet has a surface layer consisting of 92-99 wt.% of polyester resin, which is obtained by polycondensing a dicarboxylic acid component mainly made of terephthalic acid and 1,4-cyclohexanedimethanol. and has an intrinsic viscosity of 0.60 dl/g of higher, and 1-8 wt.% of polyolefin resin and a basic layer consisting of 60-97 wt.% of resin, which is mainly made of polyethylene terephthalate having the intrinsic viscosity of 0.60 dl/g or higher, 1-10 wt.% of polyolefin resin, 2-30 wt.% of polyester-based elastomer resin and 1 wt.% or below of modified polyolefin resin. Then, by employing a polyester-based multilayered sheet and the sheet just mentioned above, the resultant sheet is heat-formed so as to realize its degree of crystallization of 10-40% and finally heat-set.</p> |
