| 摘要 |
PURPOSE:To obtain a photographic material extremely small in pits occurring on the surface of a resin by executing on the surface of a plastic film, extrusion coating on a resin composition containing a prescribed amount or more of polyolefin subjected to one or more times of kneading treatments. CONSTITUTION:The photographic material is obtained by melt extruding the resin composition subjected to one or more times of kneading treatments composed of 50-95pts.wt. of polyolefin and 5-50pts.wt. of high density polyethylene on at least one surface of the plastic film to coat the film, thus permitting occurrence of pits to be made extremely small, and further lessened by adding 10-30pts.wt. of the high density polyethylene, and the obtained photographic material to be especially adapted to the support of a lithographic plate to be printed from the reverse side.
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