Analysis of Corrugated Box Faced with Tantalum Process Problems

The types of glue used in domestic joints (varna and confrontation) are now relatively confusing, and there are probably two types of integration:

1, oxidized starch and water glass glue, this type of plastic is cheap, there is a certain viscosity, so in some low-grade packaging and low cost requirements are still in use, but because this type of plastic is very strong, so sometimes the packaging will appear The phenomenon of yellowing, softening, moisture absorption, and brittleness affects the printing quality of the ink. When printed in various types of casseroles on the printing surface, it is released, so it belongs to the low-grade viscose that should be eliminated.

2, polyvinyl acetate emulsion modified plastic, this type of adhesive is environmentally friendly viscose, bonding strength, fast drying, is widely used, but the price is relatively high, which also points high mid-range. In general, the higher the price, the greater the intensity and the lower the water content, high-end packaging products generally use such high-quality glue.

In the actual processing and production process, the common quality problems in the process of co-processing are generally the following:

1, the product appears warping phenomenon. The main reason for this situation is that the number of stickers is too many, and the glue on the edge of the paperboard is dry and it cannot stick. Therefore, it is usually more appropriate to crush 20 sheets.

2, the product's humidity is too high, especially for the gold card flat stickers. It is mainly due to the poor penetration and loss of water in gold paperboard, whereas the ordinary flat glue has higher moisture content. So usually use quick-drying adhesive or the product is deployed to dry in the sun to solve.

3. If the product is tiled or flat, if the product is exposed to high humidity, it may turn yellow after it is left for a longer time. This is mainly due to the fact that some manufacturers use water glass adhesives or starch gums containing large amounts of alkalinity. Therefore, in order to ensure the quality of the product, we should use better quality flat and corrugated.

4. Delamination of packaging products is mainly caused by insufficient strength of adhesives. It is recommended to use some products from regular manufacturers to ensure strength, reduce humidity, increase stiffness, and improve product quality and grade of packaging. .