| 摘要 |
PROBLEM TO BE SOLVED: To provide a stretch/shrink laminated film capable of being manufactured even by inflation molding, not having low temperature shrinkability, the tight tension after shrinkage and breaking trouble at the time of packaging in an automatic packaging machine or the like, and its manufacturing method. SOLUTION: The stretch/shrink laminated film comprises at least three layers, wherein both surface layers thereof mainly consist of a component (A) being an ethylenic polymer and the intermediate layer thereof mainly consists a component (B) being an ionomer resin composition wherein at least two crystallizing peak temperatures at the time of cooling at a cooling speed of 10°C/min due to differential scanning colorimetry are present between 60-90°C, and wherein the thickness ratio of the intermediate layer to the whole thickness of the film is 35-90% and the sum total value of the heat shrinkage factors in the longitudinal and lateral directions of the film at the time when the film is immersed in an oil bath of 80°C for 10 sec is 30% or above. COPYRIGHT: (C)2007,JPO&INPIT |
