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BuKePrinting >> knowledge >> 靜電印刷中的絲印與植絨

靜電印刷中的絲印與植絨

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2021-01-06 | 566 Views | Share:
在靜電印刷中，應用最多的是孔版型的靜電絲網印刷。用不銹鋼等導電性的材料製作網版，印刷時將網版接到高壓電源的陽極。

    靜電印刷中的絲印與植絨


靜電絲印

在靜電印刷中，應用最多的是孔版型的靜電絲網印刷。用不銹鋼等導電性的材料製作網版，印刷時將網版接到高壓電源的陽極。

電源的負極則與絲網網版相對平行的金屬板相連接。對於有強導電性能的承印物，也可將電源的陽極直接與承印物相連印刷前。

將油墨施於網版平面上，電源接通後網版上的粉末油墨在網版電極作用下帶正電荷，成為帶電粉粒。

在網版與金屬板間強電場的作用下，這些帶電粒子受到負極吸引而穿過網版網孔附著到承印物上。

再經加熱或溶劑蒸氣的處理，使其錶面的粉狀油墨熔解並提高了油墨的黏附力和覆蓋力。

靜電印刷中的絲印與植絨
靜電印刷中的絲印與植絨


靜電植絨

靜電植絨是利用靜電場的作用在承印物錶面製成絲絨般花紋的過程。

先在承印物錶面用黏合劑印上圖文，將承印物放入靜電場的一塊金屬板上，與這塊金屬板形成靜電場的另一塊金屬板上的細小絨毛。

在接通電源後就垂直飛向承印物並黏附於圖文上。切斷電源後飛揚的絨屑就很快停止下來。將承印物取出，撣去未被粘上的絨屑。

在承印物錶面則留下清晰、隆起、立體感極強的圖文。絨毛材料可以是羊毛屑、呢絨屑、尼龍或玻璃粉等。

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