Basic Knowledge Of Food Paper Bag Selection

- Mar 25, 2019-

Tote bags, as the name implies, are bags for holding items that are easy to carry. Its carrying capacity determines its material and form, and can be roughly divided into portable paper bags, plastic bags, cloth bags, small baskets and small baskets according to the materials used. The most common and frequently used ones are paper composite bags and plastic bags, followed by cloth bags, small baskets and small baskets are rare in metropolitan areas.


Most of the hand-held paper bags are printed, die-cut, glued and formed by offset printing machines using heavy kraft paper, white cardboard, gray-white cardboard, white-white cardboard and copper cardboard. Due to the modernization of printing technology and equipment, the printed patterns are exquisite, delicate and rich in expression. All the processes in modern printing can be expressed on a small handbag, such as bronzing, bump, UV, die-cutting and so on.


Due to the difference of materials, kraft paper has better stiffness and toughness, rough surface and base color. Generally, it is not suitable for 4-color printing. It only does some monochrome printing, and it is not used for surface coating. Its production cost is 1.5 yuan or so (opposite). Kraft paper tote should pay attention to the use of good quality glue when bonding, otherwise there will be a phenomenon of bottoming and blasting. At the same time, the kraft paper tote bag will be degummed if it is left for too long. White cardboard, gray-white cardboard, white-white cardboard and copper cardboard have a common feature. The surface is delicate and white. It is suitable for 4-color printing and can print very beautiful patterns due to the paper itself. The characteristics of toughness and water-repellent are usually coated on the surface after printing (BOPP film, also called biaxially oriented polypropylene film, which is called paper-plastic composite bag), which increases its toughness and water resistance. Handbags after laminating treatment generally do not exhibit degumming, and the production cost is 1.3~2.0 yuan. The cost of copper cardboard handbags is the highest, followed by white cardboard handbags, gray bottom white cardboard handbags, white white cardboard handbags.