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BuKePrinting >> Bookprinting >> 印刷中途停機時,印刷版是否需要塗膠保護?

印刷中途停機時,印刷版是否需要塗膠保護?

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-15 | 419 Views | Share:
在印刷生產過程中,經常會因為各種原因中途停機,這時擦勝可以對印版起到很好的保護作用。但擦膠後再印刷時,需要先清洗版面的油墨和膠膜,這樣又必將造成材料和時間的浪費,而且洗版膏對印版圖文部分還有輕微的腐蝕作用,會降低印版的耐印率。所以在印刷生產中發生短暫的停機,只有確有必要時,才擦膠保護印版。

印刷中途停機時,印刷版是否需要塗膠保護?

在印刷生產過程中,經常會因為各種原因中途停機,這時擦勝可以對印版起到很好的保護作用。但擦膠後再印刷時,需要先清洗版面的油墨和膠膜,這樣又必將造成材料和時間的浪費,而且洗版膏對印版圖文部分還有輕微的腐蝕作用,會降低印版的耐印率。所以在印刷生產中發生短暫的停機,只有確有必要時,才擦膠保護印版。

停機不擦膠而能夠保持印版不起臟的時間長短,與以下因素有關



①印版非圖文部分氧化膜的磨損情況。印版越舊,磨損越嚴重,儲存的水分越少,容許的停機不擦膠的時間越短


②潤濕液中阿拉伯樹膠的含量。潤濕液中一般都含有阿拉伯樹膠,它一方面可在短暫停機時對印版起保護作用,另一方面還以改善潤濕液對印版的潤濕性。但阿拉伯樹膠含量過多,容易導致油墨嚴重乳化。印刷舊版又需要頻繁停機時,可以稍微增加潤濕液中阿拉伯樹膠的含量



③油墨的種類。對於油性較重的油墨,如紅墨,印版容許的停機不擦膠時間較短。


④環境因素。環境溫度越高,濕度越低,印刷機周圍的通風情況越好,印版乾燥就越快,容許的停機不擦膠時間越短。

印刷中途停機時,印刷版是否需要塗膠保護?
印刷中途停機時,印刷版是否需要塗膠保護?

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