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无纺布袋凹印时呈现粘页现象的原因


来源:本站 作者:jnjs 日期:2021/3/25 16:39:34 浏览次数:100

收卷后的墨膜a附于原膜的后面,发生这种现象的原因有:在印刷历程中油M的用量过大;油墨的干燥速度太慢;收卷时的张力过大;油墨自身的a协力不足,无纺布袋定做厂家下面为您介绍凹印时呈现粘页现象的原因:
The reason for this phenomenon is: the amount of oil m is too large in the printing process; the drying speed of the ink is too slow; the tension during winding is too large; the ink itself is insufficient, and the non-woven bag is made to order
当凹印墨中溶剂极性较强时,与水有较好的亲和性,在相对湿度较高的季节,溶剂能大量吸收空气中水分,且极性酸胺基团也有必然的亲水性,随时间推移印墨中水量增多,再加上气温高,聚酞胺分子降解,更易引起粘页。
When the polarity of the solvent in gravure ink is strong, it has good affinity with water. In the season of high relative humidity, the solvent can absorb a lot of water in the air, and the polar acid amine group also has certain hydrophilicity. With the passage of time, the increase of water in gravure ink, coupled with high temperature, the degradation of poly (phthalamide) molecules, it is easier to cause page sticking.
解决的要领有:适当调解着墨量;适当提高烘箱于燥温度(但不行过高,不然会导致墨膜的外貌层迅速干燥,而吊膜内部没有干燥反而更容易呈现粘连现象);适当降低收卷张力;印刷半制品宜竖放不宜平放;有金属粉的墨(如金色墨、银色墨)因自身的a协力较弱,有时会因少许外界压力而发生粘连,更应小b注意;控制出产情况的相对湿度在60%一65%之间。

The main solutions are: adjust the ink amount properly; increase the drying temperature of the oven properly (but not too high, otherwise the appearance layer of the ink film will dry quickly, and the adhesion phenomenon will appear more easily if the inner part of the hanging film is not dry); reduce the winding tension properly; the semi-finished products should be placed vertically rather than horizontally; the printing process should be carried out in a proper way; Metal powder ink (such as gold ink, silver ink) due to their own weak a, sometimes due to a little external pressure and adhesion, more attention should be paid to

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