| 摘要 |
<p>PURPOSE:To obtain a laminated product which is almost free from odor and highly adhesive between layers by extrusion-coating a carboxylic acid copolymer having a polymerized unsaturated bond between ethylene and radical to the surface of a base at 280 to 300 deg.C. CONSTITUTION:A copolymer consisting of a carboxylic acid anhydride having a polymerized unsaturated bond between ethylene and radical substantially, or a blend between this copolymer and polyolefin resin is extrusion-coated on a base at 280 to 300 deg.C to form a laminated product. The polymer of ethylene and radical-polymerized acid anhydride is a radical copolymer among ethylene, an acid anhydride and another polymerizable monomer which is produced using high-pressure technique. The radical polymerized acid anhydride has each one or more of a radical-polymerizable unsaturated bond and an acid anhydride group, and this acid anhydride group can be introduced into a polymer using polymerization technique. The laminated product thus obtained is almost free from odor and highly adhesive between layers, so that it is suited for wrapping of foods or heavy items.</p> |
