| 摘要 |
PROBLEM TO BE SOLVED: To provide a contact bonding paper sheet for a confidential post card which has strong fixing properties on a base paper sheet and a strong cohesive force of an adhesive film, and has a strong surface strength so that there exists no possibility of wearing and falling down of the adhesive while it runs on a printing machine and a printer. SOLUTION: In this contact bonding paper sheet for the confidential post card, a pressure-sensitive adhesive layer comprises a crosslinking agent. It is preferable that the crosslinking agent is a zirconium compound, in particular zirconium ammonium carbonate or a carbodiimide compound. It is also preferable that the pressure-sensitive adhesive comprises a water-soluble polymer. COPYRIGHT: (C)2004,JPO&NCIPI
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