A container body for a photographic film cartridge which comprises propylene-ethylene random copolymer resin composed of 96 to 98.5 wt. % of propylene unit and 1.5 to 4 wt. % of ethylene unit having a melt flow rate of 10 to 70 g/10 minutes and a molecular weight distribution of 2.5 to 5.5, Rockwell Hardness R of more than 80, and an organic nucleating agent. In the container body for a photographic film cartridge of the invention, breakage and cracking do not occur by the improvement of dropping strength. The white powder caused by the friction with the film cartridge packaged therein is prevented by the improvement of Rockwell hardness and wear resistance. The white powder caused by the sublimation or bleeding out of the organic nucleating agentis also prevented by the resin composition.
一种用于摄影胶卷盒的容器体,它包括由 96 至 98.5 重量%的
丙烯单元和 1.5 至 4 重量%的
乙烯单元组成的
丙烯-
乙烯无规共聚物
树脂,其熔体流动速率为 10 至 70 克/10 分钟,分子量分布为 2.5 至 5.5,洛氏硬度 R 超过 80,以及一种有机成核剂。在本发明的照相胶卷盒的容器体中,由于提高了滴落强度,因此不会发生断裂和开裂。通过提高洛氏硬度和耐磨性,防止了因与其中包装的胶卷盒摩擦而产生的白色粉末。该
树脂组合物还能防止因有机成核剂升华或渗出而产生的白色粉末。