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    • 1. 发明授权
    • Process for producing polymer-covered flexographic printing sleeves
    • 用于生产聚合物覆盖的柔版印刷套筒的方法
    • US5544584A
    • 1996-08-13
    • US352955
    • 1994-12-09
    • William L. ThompsonMark A. Borski
    • William L. ThompsonMark A. Borski
    • B29C35/18B29C39/02B29C39/10B29C70/72B41C1/18B41N1/12
    • B29C39/10B29C35/18B29C39/028B29C70/72B41C1/182B29K2075/00B29L2023/005B29L2031/324Y10T29/49563
    • A process for producing a durable, readily-storable, cylindrically-shaped flexographic printing sleeve having inner and an outer cylindrically-shaped walls and a substantially constant cross-sectional inner and outer diameter is provided. The flexographic printing sleeve is readily axially mountable on and dismountable from a complementary cylindrically-shaped printing cylinder having an outer cylindrically shaped wall. The process comprises providing a sleeve body. A layer of a low temperature curable polymeric material is provided to the outer circumferential surface of the sleeve body. The low temperature curable polymeric material is then cured at a temperature not greater than about 150 degrees F. to form a hardened layer of the polymeric material having a substantially uniform degree of hardness without damaging or distorting the sleeve body. A portion of the hardened layer of the polymeric material is removed to produce a flexographic printing sleeve having a thickness of up to about 0.100" and an impression range comprising an engagement distance of at least about 0.375" without any substantial visible reduction in print performance. The print performance comprises a print dot distortion of not more than about 0.0005" in the machine direction and not more than about 0.0002" in the cross machine direction.
    • 提供了一种用于生产具有内圆柱形和外圆柱形壁以及基本上恒定的横截面内外直径的耐用且易于储存的圆柱形柔性版印刷套筒的方法。 柔性版印刷套筒易于轴向安装在具有外圆柱形壁的互补圆柱形印刷滚筒上并可拆卸。 该方法包括提供套筒主体。 将一层低温可固化的聚合物材料提供到套筒主体的外圆周表面。 然后将低温可固化聚合物材料在不大于约150°F的温度下固化,以形成具有基本上均匀程度的硬度的聚合材料的硬化层,而不损坏或扭曲套筒本体。 除去聚合物材料的硬化层的一部分以产生具有高达约0.100“的厚度的柔性版印刷套筒,以及包括至少约0.375”的接合距离的印模范围,而印刷品中没有任何明显的可见减少 性能。 打印性能包括在机器方向上不大于约0.0005“的打印点变形,并且在横向方向上不大于约0.0002”。