Introduction to common problems in the gift box gluing process

In the process of packaging products, such as glue gift boxes, always easy to appear the following questions:
After brushing glue quantity is too thick to pressing glue overflow, both affected the product is beautiful, but also prone to mutual adhesion between boxes. If this situation happened after the brush glue should be air buy 2 ~ 5 minutes, wait for after adhesive is a bit dry pressing again. Brush glue too thin, and the drying time is too long, and can lead to poor adhesion fastness, and sometimes there will be can't glue at all.
Have no pressing or pressure is too small, will cause adhesive products after bounce off automatically, this kind of situation mainly for large stiffness of the product, so pressing at least half an hour, because there are a lot of adhesive is a type of adhesive contact, so you have to make the two glued surface, effective pressure in unit time, if the viscous force is less than at the beginning of elastic products, products will bounce off, so the general products are required to have a 0.5 hour press time.
Some manufacturers in order to saving the cost of raw materials with complex film adhesive and box or blended with white glue to use relatively large amounts of water to dilute the adhesive, thus resulting in the insufficient adhesive fastness, as well as on the membrane, the phenomenon of the poor adhesion. This kind of situation is very dangerous, is also in violation of the principles and process of binding.
Packing box degumming phenomenon in the winter. This is mainly because some adhesive of low temperature resistant performance is not good. Below 5 ℃, the surface of the adhesive will lose activity, and led to the decrease of the sticky relay or disappear. But on a hot summer day, stick good packaging will be out in the warehouse or transportation trunk, degumming there sprang open. This is mainly because of this kind of adhesive high temperature resistant performance is not good, at 50 ℃ ~ 60 ℃ temperatures of the sub tender, strength decreases, resulting in packing box come unglued.
Packing box at the beginning of the taped (generally) for half a month time bonding effect is very good, but with the extension of time, the phenomenon of degumming box will appear. This is mainly because adhesive bonding of persistent performance is poor, because most add some plasticizers in adhesive, with the extension of time, resulting in rubber plasticizer to paper-based migration harden, crisp so that products come unglued. On the other hand because the adhesive contains plenty of unsaturated bond, cause product aging resistance is not good storage period extend film brittle, make the product come unglued.
If the warehouse is very wet, so long time storage in it, not only the product of the humidity will exceed bid, and the product also can appear come unglued. This is mainly because the product to absorb moisture, and the water resistant performance of the adhesive itself has bad, leading to a rubber soft produces delaminating. (Gold Printing Group)
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