According to the paper coating process is classified according to the print paper print coating process coating process can be divided into three categories: dry coating, wet coating method and the method of pre-coated film. ① dry dry film coating method is the most commonly used method of coating method, which is coated with a layer of plastic film adhesives, solvent adhesives and laminating machine after drying bake removed by evaporation and dry, and then in the hot state and paper print sticky synthetic coating products. The difference sack kraft paper sack similar, mostly softwood kraft pulp produced, mixed with parts of the country there are bamboo, cotton stalk pulp, kraft cloth broken pulp production, and therefore sack high mechanical strength, generally used Production of cement, pesticides, fertilizers and other industrial bags. For the requirements for filling time, sack requires a certain air permeability and greater elongation. By wet coating method is a layer of adhesive on the surface of the plastic film coating, adhesive is dry in the situation, through the pressure roller and paper print sticky synthetic coating products. Since the advent of water-based laminating machine, water-based coating process has been to promote the application of composite woven bags, simple wet coating process which has operations, adhesives with less damage to the environment does not contain organic solvents, film prints have high-strength, high-grade, easy recovery and so inseparable. Currently cement composite woven paper, the coating process increasingly favored by domestic manufacturers of aluminum foil composite packaging bags, gift boxes have been widely used for handbags and the like, and packaging. Under China's economic development so fast current situation, under the continuous improvement of people's consumption level cases, some non-traditional waste is waste generated in the consumer area, more and more like today we explore paper-plastic packaging waste bags factory, a few decades ago we could not put packaging waste as a problem, because the packaging industry is not very developed, paper three composite bags, Xin Yu packaging (certified), composite woven by Xiong Xin Yu plastic packaging plant available. Xiong Yu Xin plastic packaging plant (www.xinyusl.com) Hebei Baoding, a leader in composite packaging products, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Yu Xin leader in packaging with the staff warmly welcome all inquiries negotiations to create Xin Yu packing a better future.