| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic resin sheet which can be easily subjected to volume reduction without being cracked. SOLUTION: This synthetic resin sheet has a tensile modulus (according to JIS K 7113) of 35,000 kgf/cm2 or lower. When this sheet having an average thickness of 0.21 mm and a size of 1.5(MD) cm×11(TD) cm is bent inwardly at an angle of 180 deg. for 1 min under a load of 70 g/cm2, is then unloaded, and is left standing for 60 min, the return angle of the sheet is 95 deg. or lower. When the sheet is subjected to volume reduction, it is not cracked. The sheet can be prepared from a rubber-containing styrene resin, an amorphous polyethylene terephthalate resin, a cycloolefin resin or the like. |
