| 摘要 |
PURPOSE:To obtain a pressure-sensitive adhesive paper having excellent adaptability to electrostatic duplication, magnetic duplication, etc., by adjusting the ratio of elongation or shrinkage factor of the cover paper to the release paper of said adhesive paper to a value within the specified range. CONSTITUTION:A pressure-sensitive paper in which the ratio of elongation and/ or shrinkage factor of the cover paper to the release paper is 0.7-1.0:1.0. By making the degree of shrinkage of the release paper 30% at maximum larger than that of the cover paper in the shrinkage balance between the cover paper and the release paper in this pressure-sensitive adhesive paper, curling after copying can be reduced. Further, by making the degree of shrinkage of paper per se 0.90% or below, pref. 0.80% or below in a crossiwise direction (in the direction perpendicular to the flow of paper making during manufacturing), an increase in curling due to changes in environment can be inhibited. Substrates used for the cover paper and the release paper of the pressure-sensitive adhesive paper can be chosen among those satisfying the condition of the degree of shrinkage of 0.90% or below, taking the shrinkage balance between the cover paper and the release paper into consideration.
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