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When analyze the touch film laminating, should pay attention to the details of the problem

by:Taian Lamination Film     2021-02-04
Analyze the touch film coated when should pay attention to the details of

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effect is one of the more common printing process, it is a pretty exquisite workmanship, be dumb membrane, for example, a bit not pay attention to, may be the cause of dumb film foam, easy to wrinkle.

we are coated, sometimes feel film is bright and sparkling, what reason, how to solve? Processing according to the following aspects:

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1, control the quantity of glue

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when using stretch polypropylene film laminating, must in the gelatinize on membrane. Glue quantity is through the use of a root in plastic box transmission steel roller rotation adhesive coating on the moving film, glue quantity is controlled by a fall in steel on steel roller blades to control. Pressure is heavy light glue volume: small amount of glue. How to grasp the amount of glue is good, can cover prison uniform, and does not produce crystal points. As the amount is too large, the product will be without burnish.

 

paying special attention to the gluing process, be sure to prevent gum solidification of tiny particles and foreign body kept in plastic plate. If retained in the rotation will be on the rubber roller belt, card on the enclosed plastic blade, here will appear together without glue white print. Laminating machine after a long downtime, therefore, in the film coating, before starting the resin coated water or high boiling point kerosene to clean plastic pump and sheng plastic bucket box, in order to ensure the normal coating of glue roller rubber on the membrane and does not produce mark.

 

2, steel cylinder must be kept clean by the overlying pressure for a long time, the steel drum, direct contact with membrane and temperature effect, would be some residue left in the above steel drum. Silicone drum of direct contact with the back of the products covered by paper, coupled with the spacing of paper separation, a lot of glue is directly hot press the rubber roller and accumulation, which will affect the brightness of the product. Serious when still can make the product produce wrinkles. , therefore, be sure to keep the roller clean, clean downtime at any time, ensure the quality of coated products.

 

3, the scope of control temperature

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when laminating, electrical heating steel drum temperature must be based on the product and the film thickness to adjust. As the coated substrates is the gold card paper, pressure steel drum temperature should be controlled in 70 - 80 ℃, thus covering 250 g/m2 or 300 g/m2 of grey board paper, should be transferred to a temperature of 80 ~ 90 ℃. White paper in the process of placing, its absorption of moisture is far more than gold card paper. Especially on rainy days and winter, if the temperature adjustment is not appropriate, resin coated products there is no light. Coated with silicon found her honey haired clear water or steam drum, this is because the paper after absorbing a large amount of water. Effect of temperature to improve some such products. For a product, the temperature of the drying tunnel can be controlled in 50 ~ 60 ℃. With glue film at the bake, finger stick test has no obvious trace, a bit of a sticky. If the effect of high temperature, bubbles. So when coated must according to the product characteristics control the temperature of heating steel drum.

 

4, insufficient pressure adjustment

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according to customer demand, the thickness of substrates is inconsistent. According to substrates in coated paper to adjust the thickness of the silica gel stress between roller and steel roller. If the pressure is too small, coated products of film, not bright, easy to produce wrinkles: pressure is too great, can produce membrane wrinkling and paper deformation.

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