| 摘要 |
PURPOSE:To prevent blocking during storage by providing a specific sticking- preventive layer on one surface of a substrate. CONSTITUTION:A transfer ink layer is provided on one surface of a plastic film. A heat-resistant sticking-preventive layer consisting of polyvinyl butyral, melamine resin, and a filler is provided on the other surface. The polyvinyl butyral preferably has a high degree of polymerization from the standpoint of heat resistance. The polyvinyl butyral and the melamine resin are used in such a ratio as 5-80 pts.wt. melamine resin per 100 pts.wt. polyvinyl butyral As the filler, inorganic particles, such as talc or silica, or waxes, such as paraffin wax, can be used. It is preferable that the thickness of the heat-resistant sticking-preventive layer is normally the order of 0.05-3.0mum. In this manner, blocking during storage can be prevented from occurring. |
