| abstract |
PROBLEM TO BE SOLVED: To obtain a hollow container for heat sterilization which is excellent in transparency and impact resistance, has little odor, and has these characteristics, especially transparency, even after heat sterilization. SOLUTION: A test piece having a thickness of 0.5 mm is heated at 121 ° C. for 2 hours. After steam sterilization for 0 minutes, the underwater light transmittance obtained from the amount of transmitted light at a wavelength of 450 nm is 70 to 99%, and the thickness is 0.1 mm. After steam-sterilizing a 5 mm test piece, the tensile elasticity measured by ASTM D 638 is 200 to 700 MPa, and ASTM D 133 before and after steam sterilizing a 0.5 mm thick test piece. The difference in haze measured by 0 is 1 to 20%, 0.5 m A test piece of mx 9 cm x 9 cm was steam-sterilized and then fixed to a jig having a 1-inch diameter receiving hole. And the high-speed impact strength obtained by measuring the total breaking energy required for breaking the test piece at 0 ° C. is 1. A heat sterilization hollow container made of a polyolefin resin having physical properties of 5 to 10 J. |