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印刷廠​冷燙印技術的工藝流程【步殼印刷】

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2023-01-11 | 36 Views | Share:
印刷廠​冷燙印技術的工藝流程【步殼印刷】

印刷廠冷燙印技術的工藝流程【步殼印刷】


傳統的燙金工藝使用的電化鋁背面預塗有熱熔膠,燙金時,依靠熱滾筒的壓力使黏合劑熔化而實現鋁箔轉移。而冷燙印所使用的電化鋁是一種特種電化鋁,其背面不塗膠,也不需要使用加熱後的金屬印版,而是將黏合劑在印刷時直接塗在承印物錶面需要電化鋁裝飾的位置上,印刷轉移時電化鋁與黏合劑接觸,在黏合劑的作用下使電化鋁附著在印刷品錶面上

冷燙印技術的工藝流程是

1)印刷黏合劑。在印刷品需要燙印的部位印刷上一層特種黏合劑—UV壓敏型

2)乾燥。通過UV乾燥裝置將黏合劑乾燥到一定程度,形成一層高黏度的,非常薄的壓敏膠層。

3)鋁箔轉印。在一對金屬滾筒的作用下,使特種電化鋁箔同黏合劑接觸並壓合為一體,由於合劑同鋁箔之間的黏結力大,排廢時,鋁箔與黏合劑接觸的部分留在印刷品錶面與印刷品成為一體,而鋁箔的其他部分則同傳統燙金一樣排廢,從而完成冷燙印

4)後處理。由於轉移在印刷品上的鋁箔圖紋浮在印刷品錶面,牢固度很差,所以必須給予保護,一般是在印刷品錶面上光或覆膜,以保護鋁箔圖紋

印刷廠冷燙印技術的工藝流程【步殼印刷】

印刷廠冷燙印技術的工藝流程【步殼印刷】

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