1. According to the material, it can be divided into: white cardboard paper bag, white board paper bag, coated paper bag, kraft paper bag, and a small amount of special paper.
(1) White cardboard: White cardboard is strong and thick, with high stiffness, burst resistance and smoothness, and the paper surface is smooth. The commonly used thickness is 210-300 grams of white cardboard, and the most used is 230 white Card. The paper bag printed on white cardboard is full of color and the texture of the paper is very good, it is your customized choice.
(2) Coated paper: Coated paper is characterized by a very smooth and smooth surface, high whiteness, high smoothness, and good gloss. It also makes the printed graphics and pictures have a three-dimensional effect. The commonly used thickness is 128 grams to 300 grams. , The printing effect of coated paper is the same as that of white cardboard, and the color is full and bright. Compared with white cardboard, the stiffness is not as good as that of white cardboard.
(3) White kraft paper: white kraft paper has high bursting strength, good toughness, high strength, uniform thickness and stable color image. According to relevant national laws and regulations, supermarkets restrict the use of plastic bags, and foreign countries, Europe and the United States and other countries advocate the trend of using environmentally friendly paper bags. Strictly control plastic pollution, plastic bags will be replaced by environmentally friendly paper bags, and the market prospect of white kraft paper is promising. Made of 100% pure wood pulp, it is environmentally friendly and non-toxic, and can be recycled and reused. White kraft paper has good toughness and does not need to be laminated. It is widely used in the production of environmentally friendly clothing bags, high-end shopping bags, etc. The commonly used white kraft paper with a thickness of 120g-200g has no brightness and gloss. White kraft paper is not suitable for printing ink with too much content.
(4) Kraft paper: also known as natural color kraft paper. It has high tensile strength, high toughness, usually brownish yellow in color, high tear strength, rupture and dynamic strength, and is widely used in shopping bags, envelopes, etc. Commonly used thickness of 120 grams -300 grams of natural color kraft paper. Kraft paper is generally suitable for printing monochrome or two-color manuscripts with uncomplicated colors. Compared with white cardboard and white kraft paper box coated paper, the price of yellow kraft paper is lower.
(5) White board paper with gray background: White board paper is a kind of cardboard with white and smooth front and mostly gray bottom on the back. The commonly used thickness is 250g-350g. One side of white board paper is white and the other side is gray. The price is relatively white. Cardstock is a little cheaper.
