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PE拉伸膜出現斑塊的原因
日期:2020-11-09 14:08:25 來源:宏展包裝

在生產加工PE透明拉伸膜時,表面層會存在色斑的問題,這是什么緣故導致的呢?這是因為此類現象會干擾PE透明拉伸膜的產品質量和銷售,這個問題應該如何解決呢?今天東莞宏展包裝拉伸膜廠家就來講解下下透明拉伸膜因何會存在色斑的緣由:

PE拉伸膜

透明拉伸膜存在色斑的緣由:

1、可能是因為油墨的隱瞞力不強;

2、可能是它的流平性太差,造成隱瞞不均勻,鍍鋁層的色彩便會穿透油墨浸露出來;

3、可能是PE透明拉伸膜干燥不充分,溶劑揮發不徹底,造成粘膠劑中殘存溶劑過多,一部分墨層被溶解上光,存在斑塊;

4、也有幾率的這是因為油墨和粘膠劑不配對,導致粘膠劑對油墨的浸透作用欠好,形成抵觸現象,也會出現斑塊;

5、還可能是由于油墨的外表張力低,墨層與鍍鋁層兩者之間的黏結力和層間嚴密度便會凹凸紛歧,在視覺上造成PE透明拉伸膜有白色或灰色的斑塊。

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