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軟包裝印刷使用的材料1.塑料薄膜

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2021-06-22 | 578 Views | Share:
軟包裝印刷使用的材料1.塑料薄膜

軟包裝印刷使用的材料1.塑料薄膜

常用的塑料薄膜有,PPC.PPAPPCAN等多種,塑料屬非極性高分子化合物,與印刷油墨之間附著力根差。為了使塑料薄害面具有良好的油墨君力,在印刷前必須進行錶面活化處理,常用的方法為電是處理法,其原理是塑料薄摸經高瓣電壓放電沖擊,使非極性錶面變粗糙,吸附能力大大增強,油墨的附著方也就增強了

BOPCPFP等基材處理後錶面張力應該為38-42mycm才符合印刷的要求,受周圍空氣的相對溫度、限度影響而仲縮變形,易受張力的變化影響

軟包裝印刷使用的材料1.塑料薄膜
軟包裝印刷使用的材料1.塑料薄膜

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