| 摘要 |
PURPOSE: To enhance adhesive properties and a durability, such as a resistance to heat and a resistance to moist heat, by bonding a polarizing film to protective films with a thermosetting adhesive composed mainly of a copolymer of ethylene, vinyl acetate, and maleic acid and/or maleic anhydride. CONSTITUTION: A polarizing plate 4 is formed by adhesively covering a polarizing film 1 with protective films 2. As an adhesive 3 for bonding the polarizing film 1 to the protective films 2, a thermosetting adhesive composed mainly of a copolymer of ethylene, vinyl acetate, and maleic acid and/or maleic anhydride is used. The thermosetting adhesive prepared by mixing 0.1-10 pts.wt. organic peroxide and 0.01-5 pts.wt. silane coupling agent per 100 pts.wt. of the copolymer and kneading the mixture is formed into a predetermined shape for use by a film forming method, such as calendering, rolling, T-die extrusion, or inflation. A laminate is formed by overlapping the protective films 2 on the polarizing film 1 through adhesive films of the adhesive 3. The polarizing plate 4 is obtained by heating and pressurizing the laminate. |
