FILM FOR THERMAL STENCIL PRINTING BASE PAPER

摘要

PROBLEM TO BE SOLVED: To obtain a film for thermal stencil printing base paper which has both a perforating property at low energy and a base paper flatness after it is stuck to a porous support body. SOLUTION: A film contains at least one kind of aromatic polyester consisting of an aromatic carboxylic acid and an aliphatic glycol or an alicyclic glycol. A particle having a primary particle diameter of 5-100nm contained in the film forms a secondary cohesive particle. The ratio between the length L1 in a direction parallel with a direction of the film face in a secondary cohesive particle form and the length L2 in a direction vertical to the face direction satisfies 0.01