| 摘要 |
PURPOSE:To boost production a few times and resultantly reduce cost by causing the entire surface except a part forming an impression on the surface of a continuous foamed sponge to cave-in in a recessed shape, keeping an amount squeezed out by said cave-in compacted in the bottom of said recessed cave-in part and occluding ink into a sponge. CONSTITUTION:A pressure-sensitive adhesive 2 is applied on the reverse side of a thermoplastic synthetic resin film 1 and on this applied surface, a mold-releasing paper 3 is coated in a freely separable manner to an attaching sheet 4. Then a mold 8 having recessed part 6 which forms an impression and a projected part 7 which forms the other area, is pressed on the front surface of a continuous foamed sponge of plate shape on which back side the afore-mentioned attaching sheet 4 is pasted. Thus a convex part for nonsmashed-type impression formation 9 and a concave part for smashed-type non impression formation 10 are provided on the front surface of the sponge. At the same time, an amount squeezed out of said recessed part for nonimpression formation 10 is compacted at the bottom of the recessed part for nonimpression formation 10 using low-frequency heating means without leaving any bubbles. After this procedure, the mold 8 is separated from the sponge 5 to constitute a stamp body 11 and the mold-releasing paper 3 is stripped off the stamp body 11. Then the stamp body 11 is attached to a stamp pad 12 by a pressure-sensitive adhesive 2 on the reverse side of the stamp body. |
