| 摘要 |
PURPOSE: An adhesive composition is provided to prevent curling when a reflective film is bonded to a metal layer and to reduce a failure rate and production costs by removing a leveler process in which curling is removed. CONSTITUTION: An adhesion composition for preventing curling comprises (A) 55-80 weight% of a polyurethane component, (B) 15-40 weight% of a polyester adhesive ingredient, and (C) 3-15 weight% of a hardener component based on the total weight of the composition. And the polyurethane component (A) comprises (a) PTMG which comprises 40-70 weight% of 1,500-2,500 molecular weight PTMG and 500-1,500 molecular weight PTMG; (b) 15-40 weight% of 3,000-5,000 molecular weight polyester polyol; (c) 3-15 weight% of isocyanate; and (d) 5-15 weight% of a plasticizer component based on the total weight of the polyurethane. |
