PURPOSE: To obviate danger of separation in an adhered surface with two non print surfaces during mailing by providing a pressure sensitive adhesive layer and forming three folding pressure sensitive post card paper on both the surfaces of a paper support with a mean value of paper interlayer strength made into a specific range.
CONSTITUTION: For the support of three folding pressure sensitive post card paper, a support is employed which has a paper interlayer strength in the range of 65-150g/15mm, however, it is more preferable to be in the range of 70-120g/15mm. It is not preferable that when the paper interlayer strength is less than 65g/15mm, paper breakage easily occurs during the both separation of a paper surface 2 and a paper surface 2', on the contrary, when it is beyond 150g/15mm, paper breakage is hard to be achieved through a good separation at an adhered surface between the non-printed surface 3 and the printed surface 3'. For the paper support, paper made by using lumber pulp as a main material is available without any particular limitation, thus LBKP alone or a mixture of NBKP and LBKP can be employed therefor.
TSUCHIYA SHINICHI
SATO KAZUNORI
| JPH07276858A | 1995-10-24 |