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印刷廠​冷燙印技術的分類【步殼印刷】

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2023-01-14 | 51 Views | Share:
印刷廠​冷燙印技術的分類【步殼印刷】

印刷廠冷燙印技術的分類【步殼印刷】


冷燙印工藝可分為乾法冷燙印和濕法冷燙印兩種。

1)乾法冷燙印工藝。乾法冷燙印工藝是對塗布的Uv黏合劑先固化再進行燙印。當冷燙印技術剛剛問世時,採用的就是乾法冷燙印工藝,其主要工藝有以下幾步驟

在承印材料上印刷UV壓敏型黏合劑。

對黏合劑進行固化

借助壓力輥使冷燙印箔與承印材料復合在一起。

將多餘的燙印箔從承印材料上剝離下來,只在塗有黏合劑的部位留下所需的燙印需要說明的是,採用乾法冷燙印工藝時,對UV黏合劑的固化宜快速進行,但不能徹圖文底固化,要保證其固化後仍具有一定的菌性,這樣才能與燙印鋁箔很好地黏結在一起,

2)濕法冷燙印工藝,濕法冷燙印工藝是在塗布了UV黏合劑之後,先燙印然後西對翻合劑進行匿化,主要工藝有以下幾步驟

在印材料上印刷自由基型UV數合劑

在承印材料上復合冷燙印鉛箔

對自由基型UV翻合劑進行固化,由於數合劑夾在冷燙印鋁箔和承印材料之間,Uv光線必須要透過燙印鋁箔才能到達黏合劑層

將燙印鋁結從承印材料上測離,並在承印材料上形成燙印圖文需要說明的是:濕法冷燙印工藝用自由基型UV黏合劑替代傳統的UV薪合劑;Uv合劑的初黏力要強,固化後不能再有黏性,這樣才能保證貼合牢度:燙印鋁箔的鍍鋁層應有一定的透光性,以保證UV光線能夠透過並引發UV黏合劑的固化反應。

印刷廠冷燙印技術的分類【步殼印刷】

印刷廠冷燙印技術的分類【步殼印刷】

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