| 摘要 |
PURPOSE:To obtain a composite film, adhesion and heat-sealing strength of which are improved and which develops low odor, by a method wherein base material is coated with chlorinated polypropylene and/or modified chlorinated polypropylene solutions and dried and, after that, coated with polyolefin-based resin by extrusion. CONSTITUTION:The base material of composite film, which consists of said base material and polyolefin-based resin film, is coated with chlorinated polypropylene and/or modified chlorinated polypropylene solutions and dried and, after that, coated with polyolefin-based resin by extrusion. The chlorine content of the chlorinated polypropylene and/or modified chlorinated polypropylene is preferably 5-50wt.%, more preferably 15-35wt.%. If the chlorine content is below 5wt.%, poor adhesion and solubility result. If the chlorine content exceeds 50wt.%, adhesion and suppleness lower, resulting in becoming improper as anchor coating agent. |
