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什麽是印刷廠固體硬化型感光性樹脂版

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-26 | 651 Views | Share:
印刷廠固體硬化型感光樹脂版,簡稱固體樹脂版。在聚酯薄膜的片基上,塗布有感光樹脂,經曝光、沖洗即可得浮雕狀的凸版。常用的固體樹脂版有聚乙烯醇性樹脂版和感光性尼龍版固體樹脂版的製版工藝和液體樹脂版的製版工藝基本相同,也要經過曝光、沖洗、乾燥和後曝光,但多了一道熱固化的工序。

什麽是印刷廠固體硬化型感光性樹脂版

印刷廠固體硬化型感光樹脂版,簡稱固體樹脂版。在聚酯薄膜的片基上,塗布有感光樹脂,曝光、沖洗即可得浮雕狀的凸版。常用的固體樹脂版有聚乙烯醇性樹脂版和感光性尼龍版固體樹脂版的製版工藝和液體樹脂版的製版工藝基本相同,也要經過曝光、沖洗、乾燥和後曝光,但多了一道熱固化的工序。

下麵以聚乙烯醇感光樹脂版為例簡述固體樹脂版的制
版工藝。


1.曝光

將正向陰圖片與樹脂版緊密接觸後在曬版機中曝光,一般選擇紫外線豐富的低功率冷光源

2.沖洗

在沖洗機中,用溫度為45-50℃的溫水沖洗,水壓一般控制在2-2.5kg/cm2


3.乾燥和後曝光

將沖洗後的聚乙烯醇凸版,經熱空氣乾燥後進行曝光。也可以用紫外線光源的乾燥器邊乾燥邊曝光。


4.熱固化

將乾燥和後曝光的凸版,放進120-130℃的烘箱內,進行熱固化處理,使聚乙烯醇脫水,以提高印版的硬度固體樹脂版是預塗型版材,用機械成型,平整度較好,固定於金屬片基或聚酯薄膜片基,收縮性小、尺寸穩定,質量較高,可製作網線圖版;感光性尼龍凸版,由於尼龍分子中具有酰胺基和分子間存在氫鍵,所以有彈性好、堅韌性強、耐磨性好、分辨力高等優點。
們的製版工藝雖簡單,但成本校高,因而使用受到影響。

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