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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 that the amount of oil m is too much in the printing process; Ink drying speed is too slow; Too much tension during winding; Due to the lack of ink itself, the non-woven bag manufacturers will introduce the reasons for sticking pages in gravure printing
无纺布凹印时呈现粘页的原因
Causes of sticking pages in non-woven gravure printing
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。
The main points of solution are: adjust the amount of ink properly; Properly increase the drying temperature of the oven (but not too high, otherwise it will cause the appearance layer of the ink film to dry quickly, while the inner part of the hanging film is not dry, it is easier to show adhesion phenomenon); Reduce the winding tension properly; Printed semi-finished products should be placed vertically rather than horizontally; There are metal powder ink (such as gold ink, silver ink) due to their own weak a.
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,无纺布袋厂家讲解印品应存放在通风干燥、温度低于3090的情况中,制止湿润、高温引起的聚酸胺降解;出产历程中回收先热后冷的干燥要领:先热,使墨层中溶剂尽快挥发,后冷,使印件降温,加速聚ft胺固化。
Sometimes because of a little external pressure and adhesion, more attention should be paid to small B; The relative humidity of the production should be controlled between 60% and 65%. The non-woven bag manufacturers explained that the printing products should be stored in the condition of ventilation and drying, and the temperature should be lower than 3090, so as to prevent the degradation of polyacid amine caused by humidity and high temperature; In the production process, the drying method of recycling hot first and then cold: hot first, so that the solvent in the ink layer volatilizes as soon as possible, and then cold, so as to cool the printing and accelerate the curing of polyamine.

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