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The surface of the aluminum foil printing processing and pre

addtiame:2016/10/18 click:
In addition to the aluminum foil paper baking can also be used to do? Aluminum foil can also be used to printing. So when in the printing in aluminum foil paper, should how to prepress processing?

Aluminum foil printing surface treatment
Aluminum foil in the air, the surface will immediately generate a very thin layer of dense oxide layer, if there is no dirt, oxide layer ink good adhesion on it. But in the actual production aluminum foil by lubricant and environment such as dust contamination, form a layer of thin film layers of influence on the performance of the printing ink adhesion. So must be using the aluminum foil printing prepress corrosion wash sex coating processing, to eliminate the lubricant class smudgy, enhanced ink with foil surface adhesion of q.
The corrosion of aluminum foil wash sex coating processing, also known as the underlying surface treatment, is to use shellac coating or nitrocellulose coating base coating on aluminum foil surface. After coating, surface coating material instead of aluminum foil printing. The coating material has good affinity with ink, so as to improve the printing ink to the foil surface adhesion.
Aluminum foil printing paper pretreatment
Aluminum foil composite material of aluminum and paper, when the job or the use of rapid changes in the environment temperature and humidity makes it too late to achieve internal balance, by internal coating or double layer structure adhesive link will produce internal stress, not only causes expansion or contraction, and due to the moisture content changes, will cause the local size changes, the paper formed curly, buckling, waves, and even permanent deformation, the serious influence after the printing and processing quality. So in order to guarantee normal aluminum foil printing, printing workshop is good control of the temperature and humidity, to keep the workshop temperature (25 + 2) ℃, relative humidity was 50% ~ 60%.
Temperature humidity balance and its important before printing processing, temperature and humidity are not balance will produce electrostatic, paper difficulties. In practical production, aluminum foil packing placed in the workshop must be at least 16 h can open cut white material, 8 and 12 hours after printing. In addition, in addition to the drying paper rack drying, printing quality in the processing period also should cover plastic moistureproof or reduce the slip deformation.