| 摘要 |
PURPOSE:To provide a release sheet having an excellent barrier property against a release agent soln., release agent adhesion and heat resistance, by providing a release layer on a sheet support through a primer layer composed of a soap-free acrylic resin emulsion and oxidized starch. CONSTITUTION:In a release sheet in which a release layer is provided on at least one side of a sheet support through a primer layer, the primer layer is formed from a soap-free acrylic resin emulsion and oxidized starch. If desired, further a melamine/formaldehyde resin may be added to the primer layer forming component to carry out an intermolecular crosslinking reaction between the acrylic resin and the oxidized starch and an intramolecular crosslinking reaction, whereby adhesion to the substrate and resistance to heat and water can be improved. The oxidized starch is used in a quantity of 3-200pts.wt. (on a solid basis) and the melamine/formaldehyde resin is used in a quantity of 0.3- 30pts.wt. (on a solid basis) per 100pts.wt. (on a solid basis) acrylic resin emulsion.
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