发明公开
EP0044840A4 INFORMATION CARRYING DISCS. 失效
信息支撑板。

INFORMATION CARRYING DISCS.
摘要:
Information carrying discs, such as video discs, tend to be damaged by marking, abrading and grease or solvent. It has been found that transparent polymeric compositions having a specified resistance to abrasion may be used in the formation of information carrying discs.
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