| 摘要 |
PROBLEM TO BE SOLVED: To enhance the adhesiveness, transparency and surface smoothness of a product by preventing the generation of wrinkles and fine air bubbles and air pockets over a large range based on air accumulation of air generated between the adhesive surface of a material to be laminated and that of a laminating film by lamination treatment. SOLUTION: At the time of lamination treatment passing the material to be laminated and a laminating film through heating pressure rollers in such a state that both bonding surfaces of them are superposed one upon another by forming a large number of continuous grooves 1 in the longitudinal direction being the advance difrection of lamination treatment on the adhesive surface of a film main body 2, accumulable air is excluded through long connection grooves 1 and the continuous grooves 1 themselves are flatly formed by the heat and pressure of a pressure roller. |
