| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a container material having excellent transparency, flexibility and heat resistance by compounding specific polyethylene(PE) and styrene- base thermoplastic elastomer with a polypropylene(PP) polymer. SOLUTION: The soft plastic container used in a medical field for transfusion, blood, etc., is formed by using a polymer composition composed of (A) the PP polymer, (B) metallocene catalyzed linear low density polyethylene and (C) the styrene-base thermoplastic elastomer. The weight ratios of (A) to (C) in the polymer composition are respectively set at ranges of 50 to 80:15 to 40:5 to 30. The PP having a density within a range of 0.90 to 0.92 g/cm3 is used for (B). The hydrogenated matter of a block (polystyrene-polybutadiene- polystyrene), block (polyethylene-polyisoprene-polystyrene) or styrene-butadiene copolymer is used for (C).</p> |
