| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a resin container which has superior transparency and with which the deterioration of its content such as cosmetics or medicines owing to ultraviolet rays is prevented. SOLUTION: A resin composition is made by mixing a propylene block copolymer and a master batch which is low density polyethylene mixed with 10-30 mass%, especially 15-25 mass% zinc oxide. A resin container is formed by injection molding or blow molding, etc. using this resin composition. Relative to 100 pts.mass propylene block copolymer, 0.5-5 pts.mass, especially 1-3 pts.mass master batch is used. It is desirable that zinc oxide contained in the resin container is 0.02-0.2 pts.mass, especially 0.03-0.1 pts.mass when the propylene block copolymer is 100 pts.mass. Also it is desirable that the average grain diameter of the zinc oxide is 0.02-2μm, especially 0.07-1μm.</p> |
