| 摘要 |
A shutter for a cartridge for a disk or a tape which can be obtained by molding a composition containing (A) 100 parts by weight of a polyacetal resin, (B) 0.01-35 parts by weight of a hindered amino compound, and (C), 0.01-5 parts by weight of polyglycerol fatty acid ester having a degree of polymerization of glycerine of 3-8. The present invention is directed to a shutter for a cartridge for a disk or a tape which has excellent printability and preferably little variation with the lapse of time of such printability, and which is useful for opening and closing a head insert window on the outer surface of a case for a disk or tape cartridge containing a magnetic disk, a magnetic tape, an optical disk or an optical tape. |
