| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a highly safe and clean medical bag which has a high impact resistance even at low temperatures, and which has no danger of elution of harmful low molecular weight material by manufacturing it by blow molding of a thermoplastic resin having excellent low temperature characteristics. SOLUTION: A freezing bag is manufactured by blow molding at a processing temperature of 149-327 deg.C using a copolymer of ethylene having a Vicat softening point of 59 deg.C and a density of 0.94gr/cc with methyl acrylate by 20%, for example, as a thermoplastic resin having excellent low temperature characteristics. A high impact resistance can thus be provided at such low temperatures as -80 to -85 deg.C. In addition, adhesion agent to be used for laminating films or manufacturing bags is not used, but a synthetic resin which is completely harmless in toxicity is used, thereby a highly safe and clean medical bag without elution of harmful low molecular weight material can be provided.</p> |
