IMAGE FORMING ELEMENT WITH BIAXIALLY DRAWN SHEET CONTAINING FLUOROPOLYMER

摘要

PROBLEM TO BE SOLVED: To obtain an image forming substrate containing a biaxially drawn polyolefin sheet that suppresses melt fracture and has adhesiveness between the polymer and an image layer. SOLUTION: The image forming element contains a substrate with a biaxially drawn sheet of a polyolefin polymer stuck to each side face and one of biaxially drawn sheets contains a fluoropolymer processing aid. An arbitrary appropriate biaxially drawn polyolefin sheet may be used as a sheet on the topside of the laminated base. A biaxially drawn sheet of a composite material forming (or containing) microvoids is preferably used and it is advantageously produced by co-extruding a core layer and a surface layer and biaxially drawing the layers. About 0.1-0.5 wt.% fluoropolymer processing aid is preferably contained.