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    • 5. 发明授权
    • Method for the production of thermally cross-linked laser engravable flexographic elements
    • 用于生产热交联激光可雕刻柔版印刷元件的方法
    • US06794115B2
    • 2004-09-21
    • US10250867
    • 2003-07-29
    • Thomas TelserJens SchadebrodtMargit HillerWolfgang Wenzl
    • Thomas TelserJens SchadebrodtMargit HillerWolfgang Wenzl
    • G03F711
    • B41C1/05Y10S430/146
    • Laser-engravable flexographic printing elements including a thermally crosslinked, elastomeric, laser-engravable relief-forming layer E are made by producing a multilayer composite which has at least a two-layer composite formed of a depot layer D and an uncrosslinked precursor layer V for the relief-forming layer E which is directly adjacent to the depot layer D. Optionally, the multilayer composite may include further layers, such as support foils or films and/or protective films. The precursor layer V most preferably includes at least one elastomeric binder, and at least one ethylenically unsaturated monomer and, optionally an absorber for laser radiation and/or further additives. The depot layer D most preferably includes at least one elastomeric binder, and at least one thermally decomposing polymerization initiator and, optionally, an absorber for laser radiation and/or further additives. The thermally decomposing polymerization initiators are allowed to diffuse out of the depot layer D into the precursor layer V. If desired the depot layer D may be removed. Thermal crosslinking of the precursor layer V thereby yields the crosslinked elastomeric, laser-engravable, relief-forming layer E.
    • 激光可雕刻柔性版印刷元件,包括热交联的,弹性的,可激光雕刻的浮雕形成层E通过制备多层复合材料制成,所述多层复合材料具有至少两层复合材料,其由贮存层D和未交联的前体层V形成, 形成沉积层E直接邻近贮存层D.任选地,多层复合物可以包括另外的层,例如支撑箔或膜和/或保护膜。 前体层V最优选包括至少一种弹性体粘合剂和至少一种烯属不饱和单体和任选的用于激光辐射的吸收剂和/或其它添加剂。 贮库层D最优选包括至少一种弹性粘合剂和至少一种热分解聚合引发剂和任选的用于激光辐射的吸收剂和/或其它添加剂。 允许热分解聚合引发剂从贮存层D扩散到前体层V中。如果需要,可以除去贮存层D. 前体层V的热交联由此产生交联的弹性体,激光可雕刻的浮雕形成层E.
    • 10. 发明授权
    • Photosensitive, flexo printing element and method for the production of newspaper flexo printing plates
    • 感光柔版印刷元件和生产报纸柔版印刷版的方法
    • US07235346B2
    • 2007-06-26
    • US10485201
    • 2002-07-18
    • Rolf KnöllHartmut SandigUwe StebaniThomas TelserThomas Zwez
    • Rolf KnöllHartmut SandigUwe StebaniThomas TelserThomas Zwez
    • G03F7/028G03F7/032G03F7/11
    • G03F7/0048G03F7/027G03F7/033Y10S430/145Y10S430/146
    • The present invention relates to a photosensitive flexographic printing element for the production of flexographic newspaper printing plates, comprising at least a flexible, metallic support, an adhesive layer applied thereto, a photopolymerizable layer which can be developed in organic media and which itself comprises at least one elastomeric binder, ethylenically unsaturated monomers, a photoinitiator or photoinitiator system and a plasticizer, a transparent substrate layer, and optionally a removable protective film, where the total thickness of the flexographic printing element is from 300 to 1000 μm, the elastomeric binder has a weight average molecular weight Mw of from 80,000 to 150,000 g/mol and a Shore A hardness of from 50 to 80, and the amount of plasticizer is from 5 to 50% by weight, based on the amount of all constituents of the photopolymerizable layer, and to a process for the production of flexographic newspaper printing plates by imagewise exposure of the flexographic printing element to actinic light, followed by development and drying at from 105 to 160° C.
    • 本发明涉及一种用于生产柔版印刷印版的感光性柔性版印刷元件,其至少包括柔性金属支撑体,施加到其上的粘合剂层,可在有机介质中显影的可光聚合层,并且其本身至少包括 一种弹性粘合剂,烯属不饱和单体,光引发剂或光引发剂体系和增塑剂,透明基材层和任选的可除去的保护膜,其中柔性版印刷元件的总厚度为300至1000μm,弹性粘合剂具有 重量平均分子量M w s为80,000至150,000g / mol,肖氏A硬度为50至80,增塑剂的量为5至50重量%,基于 的可光聚合层的所有组分,以及通过成像曝光生产柔版印刷版印刷版的方法 柔性版印刷元件进行光化,然后在105至160℃下显影和干燥。