Plastic packaging bags are light-weight, high-strength, and corrosion-resistant, but what processes do plastic packaging bags manufacturers generally need to go through during production?
When compounding plastic packaging bags, the principle is to bond two or more layers of materials together through a medium to achieve better performance in packaging films and bags. When curing, it is mainly to accelerate the speed of curing of the glue between the materials. When printing, gravure printing is used, which means that the characters and patterns on the original are made into a printing plate, the surface of the printing plate is coated with ink, and the graphics on the printing plate are transferred to the surface of the printed material by pressure , Accurately and massively reproduce the same printed matter as the original. Slitting is also required, which is to divide the printed and composite materials into the specifications required by customers.
The last step is bag making. The printed, composite, and slit materials are used to make all kinds of bags required by customers. A variety of bag types can be made: middle-sealed bags, side-sealed bags, upright bags, K-shaped bags, R bags , Four-side sealed bags, zipper bags, and other product types.