公开(公告)号：NO141506C

公开(公告)日：1980-03-26

申请号：NO743605

申请日：1974-10-04

Applicant: BASF AG

Inventor： ELZER ALBERT ,  RICHTER PETER ,  WIGGER AUGUST ,  WERTHER HEINZ-ULRICH ,  ZUERGER MANFRED

IPC: G03F7/09 ,  G03F7/095 ,  G03F7/00 ,  G03F7/11 ,  B41N1/06 ,  G03F7/02

Abstract: The invention relates to relief plates for flexographic printing comprising a relatively soft elastomeric base (U) having a modulus of elasticity of from 10 to 200 kg/cm2 and a thickness of from 0.5 to 6 mm and, firmly bonded thereto, a thin, relatively hard, difficultly soluble intermediate layer Z having a modulus of elasticity of from 1 x 103 to 2.1 x 106 kg/cm2 and a thickness of from 5 to 500 mu and, firmly bonded to said intermediate layer Z, a relief layer P' consisting of a photocrosslinked elastomeric mixture having a modulus of elasticity of from 30 to 2000 kg/cm2 and a thickness of from 200 to 300 mu , the modulus of elasticity of the photocrosslinked relief layer P' being the same as or higher than that of the base U and the neutral surface of the relief plate lying in or near the intermediate layer Z. The invention also relates to photosensitive laminates for the production of such plates.