| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stretch packaging film withstanding even long-time sterilizing treatment at high temp. and capable of easily performing center sealing by an org. solvent. SOLUTION: The purpose is achieved by a stretch packaging film wherein both outer layers mainly comprise amorphous cyclic polyolefin and an inner layer mainly comprises a thermoplastic elastomer resin. As an org. solvent used when the stretch packaging film is processed into a cylindrical stretch film by center sealing, a mixture of a good solvent and a poor solvent to the amorphous polymer, for example, THF and IPA is preferable.</p> |
