| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a cover sheet for a PTP, which allows eliminating a sealing adhesive coating step reguited when a cover sheet and bottom sheet of the PTP are heat-sealed together, can be recycled after used, and has easy-to-tear- opened and breaking characteristics. SOLUTION: A kind of organic solvent among ketone, hydrocarbon and ester type organic solvents is applied on the side of a rigid polyvinyl chloride sheet at a rate of 5-100g/cm<2> and dried immediately to produce a cover sheet for a PTP that has a burst strength of 0.01-5.0kg/cm<2> when tested by a Mullen low-pressure tester of JIS P8112.</p> |
