| 摘要 |
PURPOSE:To improve the strength and heat resistance, as well as, have a cushioning property suitable to use by employing the layer filled highly with the substance forming a cavity through orientation as a fundamental layer, and laminating the surface layer which is smooth in its surface. CONSTITUTION:A composite film consisting of the surface layer B provided on a fundamental layer A and the one surface or the layer A is of the type wherein the fundamental layer A is a composition contained, to the polyester 100 pts.wt., with thermoplastic resin and/or inorganic particles 5-100 pts.wt. which is a different kind of the polyester. And, the surface roughness of the surface layer B is made to be 1.0mum or less, as well as, the cushioning rate of the whole laminated layer is made to be 10-50%. And, the thermoplastic resin except the polyester employed in the fundamental layer A is used as a thermoplastic resin. Among these resin, non-compatible resin may be preferable relative to the polyester. Thus, the laminated film with a small surface roughness and an excellent cushioning rate can be obtained, more preferable, a printing base material for printer with an excellent printing property can also be obtained. |
