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你知道印刷膠印能對膠片的作用嗎?

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-04-28 | 649 Views | Share:
印刷紙的厚度、緊密度、平滑度、灰塵、水分和pH值對膠印平版印刷有重要影響。厚度。指紙張的厚度,紙張的厚度應均勻,否則印刷效果會有明顯的差別。緊密性。緊度是指紙張結構的松度或緊度,又稱比重或體積。緊密性與油墨的吸收和潤滑密切相關。一般情況下,紙張的吸墨性隨密度的增加而降低,因此具有高密封性的紙張適合使用氧化結膜乾墨。
  印刷紙的厚度、緊密度、平滑度、灰塵、水分和pH值對膠印平版印刷有重要影響。厚度。指紙張的厚度,紙張的厚度應均勻,否則印刷效果會有明顯的差別。緊密性。緊度是指紙張結構的松度或緊度,又稱比重或體積。緊密性與油墨的吸收和潤滑密切相關。一般情況下,紙張的吸墨性隨密度的增加而降低,因此具有高密封性的紙張適合使用氧化結膜乾墨。

深圳印刷

  滑潤度是指紙張錶面的潤滑性和光滑性。平滑度決定了紙張和橡膠布的緊密性。顯然,印刷的圖形和文字的清晰度會受到紙張平滑度的影響。


  灰塵是指紙張錶面的黑色和非黑色斑點。在膠印中,灰塵的限制主要取決於印刷材料的要求,如印刷的人像和地圖。不允許有大的灰塵和黑色的灰塵斑點。


  含水量(度)。含水量是指一定量的紙張。在室溫和相對濕度的環境中,水分的平衡又稱為水分,稱為水分。膠版紙的含水量一般在6%-8%之間。紙張含水量過高,拉伸強度和錶面強度降低,塑性增強,墨膜固化印刷速度延遲,邊緣接近邊緣,荷葉邊緣彎曲或凹凸不平,印刷會起皺、起皺等酸鹼度。PH是指紙張的酸性或鹼性(用PH表示)。


  紙張的pH值是抑制或加速油墨乾燥或影響濕溶液pH值的重要因素,也是影響油墨褪色耐久性的重要因素。
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