Global Patent Index - EP 0997313 A1

EP 0997313 A1 20000503 - Rubber stamp element and production method thereof

Title (en)

Rubber stamp element and production method thereof

Title (de)

Gummistempel und Herstellungsverfahren dafür

Title (fr)

Tampon en caoutchouc et méthode de fabrication de celui-ci

Publication

EP 0997313 A1 (EN)

Application

EP 99121387 A

Priority

JP 31101098 A

Abstract (en)

A rubber stamp element is composed of, at least, two layers, i.e. a continuous-foam sponge rubber layer and a rubber layer, wherein the continuous-foam sponge rubber layer has a spring hardness of 15 to 35. This rubber stamp element is produced by the steps of: laying an unvulcanized rubber sheet (A) having a rubber composition including raw rubber, a vulcanizing agent and a filler, over another unvulcanized rubber sheet (B) having a sponge-type rubber composition including raw rubber, a vulcanizing agent, a filler and a water-soluble powder; heating and compressing them so as to be integrated; making the rubber layer (B) porous by treating the integrated structure with water; and carving the surface of either the (A) layer or the (B) layer of the integrated structure using a laser beam. <IMAGE>

IPC 1-7

B41M 1/00; B41C 3/04

IPC 8 full level

B41C 3/04 (2006.01); B41M 1/00 (2006.01)

CPC (source: EP)

B41C 3/04 (2013.01); B41M 1/00 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

EP 0997313 A1 20000503

DOCDB simple family (application)

EP 99121387 A 19991027