Process for preparing a heat-sticky undercoat material and thereby obtaining heat-sticky undercoat material

摘要

The production of heat-adhesive cloth (I) comprises placing spots of thermofusible polymers (II) of average thickness E on the front of (I) and subjecting them to electron bombardment (III). (II) contains radical primers but no photo-inhibitor, and the depth of penetration of the electrons is regulated in such a manner as to alter the physical and chemical properties of (II), e.g. m. pt., viscosity, etc., to a depth e.