As the saying goes: Illness comes from the mouth. How to identify substandard food packaging paper bags?
 "As to why fluorescent whitening agents are used, packaging manufacturers actually want to make the paper look whiter. Many laymen mistakenly think that the whiter the paper looks, the better the quality. In fact, it may be the quality of their paper. It is relatively inferior, and the cost of inferior paper using fluorescent whitening agent is much lower than that of using high-quality paper, so that they can have more profit. In addition, it is not ruled out that some manufacturers are using qualified quality paper. In the case of wrapping paper, if you want the paper to look whiter, you add a brightener."
I would like to remind our friends that when using food packaging paper bags, they should correctly master the following three easy ways to identify the advantages and disadvantages (toxic and harmful) of paper packaging bags. One is that if it is white paper, look at the whiteness of the paper. The whiteness of the paper with whitener added must be whiter than usual. The second is to look at the material of the paper. Bad paper defects such as powder drop and black spots on the paper are recycled waste paper. During paper production, there will be a large number of bacteria attached to the paddle. It will be extremely unhygienic if the food is directly contained. . The third is to smell the pungent smell of the paper, especially the smell of ink. So in order to better protect your health and safety, don't remember the above three points.

The automatic paper bag machine uses primary colors or printed sheet paper as raw materials to make square-bottom paper bags. The process flow is roughly as follows: the printed (or laminated) sheet of paper is transported by the automatic paper feeder to the drawing part for positioning, and the rolling device enters the pressure line, and then is transported to the open bottom position by the conveyor device. , Carry out horizontal line pressing, bottom opening, gluing, pressing, and finally output finished paper bags.