| 摘要 |
<p>PURPOSE:To reduce a production cost of a peel off film, to improve its productivity, and to enable prepn. of peel off film having a wide available temp. range, by forming a layer of a light shielding synthetic resin by the extrusion of a hot-melt resin. CONSTITUTION:A layer (b) of a light shielding synthetic resin is formed by the extrusion of a hot-melt resin. Suitable hot-melt resin is selected from resins having suitable adhesion to a transparent base body (a), large film strength, appropriate film hardness, and having strippable property from the base body (a), such as ethylene/vinyl acetate copolymer, polyethylene. The effect of the layer of the hot-melt resin film is that the production cost of the peel off film is reduced as well as its productivity is improved because it is superposed on a synthetic resin film layer formed singly or from a resin soln., permitting also prepn. of a light shielding synthetic resin film layer having a wide available temp. range. Although the peel off film is formed by extrusion, the process is a process of high productivity and inexpensive production cost.</p> |
