Patent ID: 6833044
Filing Date: 2004-12-21
Classification: C08G

Abstract:
A method for laminating films at a high lamination speed using a solvent-free two-component curable adhesive composition, which comprises:applying the solvent-free two-component curable adhesive composition to first film at a high lamination speed of 150 m/minute or more, wherein the adhesive composition comprises (A) a polyol component and (B) a polyisocyanate component, and at least one component of the components (A) and (B) comprises at least one polyol component having crystallinity at room temperature and is selected from the group consisting of a polyester polyol, a polyether polyol, a polycarbonate polyol and a polyurethane polyol, and an amount of the crystalline polyol component is 3 to 50% by weight relative to the to weight of the components (A) and (B), the adhesive composition has an initial viscosity of 100 to 1.500 mPaÂ·s at 70Â° C. immediately after the components (A) and (B) are mixed. and an increasing ratio of the viscosity after the mixture stands at 70Â° C. for 10 minutes is 120% or less relative to the initial viscosity, at least one of the components (A) and (B) contains aromatic rings, and the aromatic rings are present in a concentration of 0.2 to 2.8 mmol/g based upon the total weight of the components (A) and (B), and bonding the adhesive applied film to a second film at a the high lamination speed.