Kraft paper bag is a packaging container made of composite materials or pure kraft paper. It is non-toxic, tasteless, non-polluting, low-carbon and environmentally friendly. It meets national environmental protection standards. It has high strength and high environmental protection. It is currently one of the most popular environmentally friendly packaging materials in the world. One. Kraft paper bags are made of wood pulp paper as the base material. The colors are divided into white kraft paper and yellow kraft paper. The paper can be coated with a layer of PP material for waterproofing. The strength of the bag can be made from one to six layers according to customer requirements. , Printing and bag making are integrated. The opening and back cover methods are divided into heat sealing, paper sealing and paste bottom.