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    • 2. 发明授权
    • Ablatable elements for making flexographic printing plates
    • 用于制作柔版印版的可气泡元件
    • US08313887B2
    • 2012-11-20
    • US13325093
    • 2011-12-14
    • Michael T. ReganDavid B. BaileyChristine J. Landry-Coltrain
    • Michael T. ReganDavid B. BaileyChristine J. Landry-Coltrain
    • G03F7/028G03F7/039G03F7/09G03F7/11
    • B41C1/05B41N1/12Y10S430/145
    • Flexographic printing plates and other relief images can be formed from a laser-ablatable element having a laser-ablatable layer that is from about 300 to about 4,000 μm thickness. The laser-ablatable layer includes a film-forming material that is a laser-laser-ablatable material or the film-forming material has dispersed therein a laser-ablatable material. The laser-ablatable material is a polymeric material that when heated to 300° C. at a rate of 10° C./minute, loses at least 60% of its mass to form at least one predominant low molecular weight product. The laser-ablatable material also comprises at least 0.01 weight % of a depolymerization catalyst that is a Lewis acid or organometallic based catalyst. The element can be imaged by ablation at an energy of at least 1 J/cm2 to provide a relief image.
    • 柔版印刷版和其它浮雕图像可以由具有约300至约4,000μm厚度的激光可烧蚀层的激光可烧蚀元件形成。 激光烧蚀层包括作为激光可激光材料的成膜材料,或者成膜材料中分散有激光可烧蚀材料。 激光可烧蚀材料是一种聚合材料,当以10℃/分钟的速率加热至300℃时,其损失至少60%的质量以形成至少一种主要的低分子量产物。 激光可烧蚀材料还包含至少0.01重量%的解聚催化剂,其是路易斯酸或有机金属基催化剂。 该元件可以以至少1J / cm 2的能量消融成像,以提供浮雕图像。