Zipper bag packaging material company introduces the structure and application scope of kraft paper bag
Structure: kraft paper bag is a kind of packaging container made of composite materials or pure kraft paper. It is non-toxic, tasteless, pollution-free, low-carbon and environmental protection, in line with the national environmental protection standards, with high strength and high environmental protection, it is one of the most popular environmental protection packaging materials in the world.
Kraft paper can be made into one layer of kraft paper and kraft paper according to the company's requirements. The opening and sealing methods are divided into heat seal, paper seal and lake bottom.
Scope of application: chemical raw materials, food, pharmaceutical additives, building materials, supermarket shopping, clothing, etc. it is suitable for kraft paper bag packaging industry.
Packaging material knowledge: zipper bag packaging material company introduces the phenomenon of adhesion on the opposite side of flexible packaging printing
In flexible packaging printing, there is often a phenomenon of adhesion on the opposite side of printed matter, that is, when the printed matter enters the next process (surface printing products are usually divided into cutting processes; inner printing products are usually composite processes), the graphic parts of printed materials are stuck to the back of printing substrate, and the patterns and characters are damaged. This phenomenon is called adhesion.
Adhesion on the opposite side of printed matter is the most fatal quality problem in flexible packaging printing, which will lead to product scrapping and heavy loss. In the high temperature season, reverse adhesion is more likely to occur, but the causes of adhesion are various, high temperature is not the only reason. Therefore, in the actual production, we should consider and analyze from many aspects, and find out the root cause combined with the specific situation, so as to avoid the occurrence of such failures, ensure the smooth production and reduce unnecessary economic losses. www.ycritai.cn/
Dongguan Beite packaging materials Co., Ltd
Dongguan special bag, plastic bag, plastic bag, plastic bag