What is a food packaging bag?
When customizing food packaging bags, there are many types of paper that can be used, and there are four commonly used: kraft paper, coated paper, white cardboard, and offset paper. Different types of paper have different toughness, smoothness and aesthetics. When customizing paper bags, food packaging bag manufacturers will compare and choose according to the purpose of the paper bag and the characteristics of different papers.
Classification of food packaging bags?
Kraft paper: It is made of softwood sulphate natural color pulp, which is strong, usually yellowish brown, in addition to light brown, cream or white. The thickness is between 80 grams and 120 grams. Kraft paper has a high tensile strength, such as single gloss, double gloss, stripes, and no grains. Mainly used to make environmentally friendly paper bags for supermarkets, paper bags for food delivery, paper bags for dried fruits such as chestnuts, envelope bags, archive bags, medical records bags, etc.
White cardboard: a single-layer or multi-layer combination made from bleached chemical pulping and fully sized. White cardboard has a smooth surface and firm texture. At present, imported white cardboard has a larger market share in the domestic market. White cardboard is mainly used to make high-end and exquisite handbags, packaging bags, gift boxes, business cards, etc.
Coated paper: The main raw materials are coated base paper and paint. Paints, adhesives and auxiliary materials are made into coatings, which are coated on the surface of cardboard by special equipment, dried and calendered. The surface is smooth and has good printing performance. The thickness is 70-250 grams. It is mostly used in cigarette cases. Labels, cartons, etc.