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发明授权
US3990897A Laminates for the manufacture of relief printing plates 失效
用于制造浮雕印版的层压板

Laminates for the manufacture of relief printing plates
摘要：
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/cm.sup.2 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 .times. 10.sup.3 to 2.1 .times. 10.sup.6 kg/cm.sup.2 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/cm.sup.2 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.
摘要（中）：

本发明涉及用于柔性版印刷的凸版，其包括相对柔软的弹性体底座（U），其弹性模量为10-200kg / cm 2，厚度为0.5至6mm，并且牢固地粘合到其上，薄的相对 硬度难溶的中间层Z，其弹性模量为1×10 3〜2.1×10 6 kg / cm 2，厚度为5〜500μm，并且牢固地结合到所述中间层Z上，形成由 弹性模量为30〜2000kg / cm 2，厚度为200〜300μm的光交联弹性体混合物，光交换缓冲层P'的弹性模量与基体U的相同或更高 和位于中间层Z中或附近的浮雕板的中性表面。本发明还涉及用于生产这种板的感光层压板。

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