Fully Automatic Paper Bag Making Machine for Square Shape Paper Bag Making Machine

Specification :

4 types of paper for material :

When food packaging bags are customized, there are many types of paper that can be used, and there are four kinds that are often used: kraft paper, coated paper, white cardboard, offset paper. Different types of paper toughness, smoothness and beauty are different, in customized paper bags, food packaging bag manufacturers will be based on the use of paper bags and the characteristics of different paper to meet customer needs. Next, we will give you a brief introduction to the characteristics of these four kinds of paper commonly used for making bags.

1, kraft paper: is made of coniferous wood sulfate color paste, strength is larger, usually yellow brown, in addition to light brown, cream or white. The thickness is 80 g ~120 g. Kraft paper has a high tensile force, single light, double light, stripes, no lines and so on. It is mainly used to make environmentally friendly paper bags for supermarkets, food takeout paper bags, chestnuts and other dried fruit packaging paper bags, envelopes, archives, medical records, etc.

2. White cardboard: single or multi-layer combination made of bleached chemical pulping and fully sizing. The surface of white cardboard is smooth and the texture is firm. At present, imported white cardboard accounts for a large market share in the domestic market. White cardstock paper is mainly used to make high-grade and exquisite handbag, packaging bag, gift packaging box, business card and so on.

3, coated paper: the main raw materials are copperplate base paper and paint. The pigment, adhesive and auxiliary materials are made of paint, coated on the surface of cardboard by special equipment, after drying and pressing, the surface is smooth, the printing performance is good, the thickness is 70~250 grams, mostly used in cigarette boxes, labels, cartons and so on.

4, offset paper: paper is white and smooth, but the whiteness, tightness, smoothness is lower than coated paper, suitable for printing monochrome or multicolor book cover, text, inserts, posters, maps, posters, color trademarks and various packaging products, in recent years, it is also used to make less demanding nuts and other dried fruit bags.

The above is the four types of paper commonly used in food packaging bags on the market