| 摘要 |
PURPOSE:To obtain a pressure-sensitive copying sheet which functions to cyclically repeatedly have adhesion properties and releasing properties by a method wherein a layer containing microcapsules containing a color former in a mixed state with a fine globular re-releasable adhesive is provided on a substrate. CONSTITUTION:On a substrate 4, a layer 2 containing microcapsules at least containing a color former is provided. A fine globular re-releasable adhesive is compounded in this layer 2. In this manner, a pressure-sensitive copying sheet is produced. As the color former, 3,3-bis (p-dimethyl aminophenyl)-6- dimethyl aminophthalide, 3-(p-dimethyl aminophenyl)-3-(1,2-dimethyl indol-3-yl) phthalide, and the like are concretely exemplified. As the fine globular re- releasable adhesive, an adhesive obtained by copolymerizing an acrylic acid and an itaconic acid with a methacylilate as a main component is concretely exemplified. As the substrate, wood free paper, medium-quality paper, synthetic paper, and a film are concretely exemplified. |
