ADHESIVE COMPOSITION FOR CARRIER FILM AND CARRIER FILM FOR FLEXIBLE PRINTED CIRCUIT BOARD THEREBY

摘要

PURPOSE: An adhesive composition is provided to prevent the deformation and surface staining of a flexible circuit board by effectively controlling initial adhesion and adhesion after hot compression. CONSTITUTION: An adhesive composition contains: 6-15 parts by weight of a mixture of toluenediisocyanate-based and hexamethylenediisocyanate curing agents; and 0.1-10 parts by weight of a plasticizer with an ester value of 100 or more based on 100.0 parts by weight of an acrylic resin with a hydroxy group. The ratio of the toluenediisocyanate and hexamethylenediisocyanate in the isocyanate-based curing agent of the curing agent mixture is 1:0.5-1:6. A flexible circuit board protection film consists of an adhesive layer spread on one side or both sides, and the adhesive layer is formed of the adhesive composition.