Introduction of food grade white cardboard
White cardboard is a kind of thick and thick paper with a large basis weight. It is a kind of thick and firm white paperboard made of pure high-quality wood pulp. Today, the demand for white cardboard is increasing. So, what is the food-grade white cardboard? Let us introduce it to you.
The production process of food-grade white cow cardboard is basically the same as that of ordinary white cow cardboard. Food-grade white cow cardboard has strict production requirements, high requirements on paper quality and composition control, and the two papers are different in use. . Food grade white cardboard is paper that comes in direct or indirect contact with food. It is not allowed to contain fluorescent brighteners or other harmful components. It is closely related to food safety and is often used as food packaging materials. The whiteness of ordinary white cattle cardboard is very high. It is due to the addition of fluorescent whitening agents and special ingredients to improve the performance of white cardboard. However, these special ingredients will cause harm to human health. Therefore, Normal white cardboard is not used as food packaging paper.
Generally, the white packaging is hygienic and clean from the appearance, but the original whiteness of food-grade white cardboard is not so high. White cow cardboard with added fluorescent whitening agent is whiter and more suitable for food packaging. popular. Bad merchants generally use white cow cardboard with fluorescent whitening agent to package food. Some manufacturers use recycled waste paper to reduce costs, but because the quality of pulp is not high, the packaging must be made whiter. Therefore, a large amount of fluorescent whitening agent is added, which causes serious harm to human health. Therefore, the packaging paper that looks very white and bright is likely to be non-food grade paper. This is especially important.
White bull cardboard is a kind of thick, strong and durable paper suitable for printing and product packaging. The main purpose of white cardboard is to print business cards, certificates, invitations, covers, monthly calendars and post postcards. Food grade white cow cardboard has a lower gram weight and is specially designed for food packaging.
