The production process of the composite bag manufacturer is: first, copper plate, printing, compounding, drying, forming and cutting bag. The technological process of the composite bag is very complex. The composite bag produced by Haitong plastic bag factory is beautiful and cheap. Its main characteristics are moisture-proof, mildew proof, good sealing performance, and can do multi-color printing.
Characteristics and manufacture of composite packaging bags
First of all, materials with different characteristics are compounded together to improve the air permeability, moisture permeability, oil resistance, water resistance and drug resistance of packaging materials, so as to make them play the role of insect proof, dust-proof, anti microbial, light, aroma, odor and other odor isolation, as well as heat-resistant, cold-resistant, impact resistant, with better mechanical strength and processing applicability, and good printing and decoration effect 。
According to the way of packaging: three side seal, yin-yang bag, middle seal, pillow bag, five side sealing bag, self-supporting bag, zipper bag, straw bag, coiled material, cover material, etc. according to the function, it can be classified as: high anion membrane bag, cooking film bag, antistatic film bag, antibacterial film bag, antifogging film bag, vacuum bag, chemical resistant film bag, deoxidizing packaging film bag, modified atmosphere packaging film bag, etc. according to the material classification: laser aluminizing The paper materials include film laminating paper materials, laser transfer paper materials, paper composites, aluminum composites, plastic composites, fabric composites, etc.
In industry, it also includes copolymers of ethylene and a small amount of α - olefins. Polyethylene is odorless, nontoxic, waxy in hand, and has excellent low temperature resistance (the lowest service temperature can reach - 70 ~ - 100 ℃), good chemical stability, resistance to most acid and alkali corrosion (not resistant to oxidizing acid), insoluble in general solvents at room temperature, low water absorption, excellent electrical insulation performance;
But polyethylene is very sensitive to environmental stress (chemical and mechanical action), and its heat aging resistance is poor. The properties of paper plastic composite bag Polyethylene vary with varieties, mainly depending on the molecular structure and density. Different density (0.91-0.96g / cm3) products can be obtained by different production methods. Polyethylene can be processed in the same way as general thermoplastics (see plastics processing). It is widely used in manufacturing films, containers, pipes, single wires, wires and cables, daily necessities, etc., and can be used as high-frequency insulation materials for TV and radar. It is made of kraft paper with skid resistance of more than 25 degrees, which is easy to stack;
It is the most popular and practical common packaging material with good moisture resistance, easy loading and unloading, and unit transportation by manpower or forklift. Water soluble yarn composite packaging bag is a new type of packaging bag which is made by the technology of compound bag machine, in which the weft yarn is continuously surrounded without seam. The structure of the paper yarn composite packaging bag is composed of two layers of international paper bag paper inside and outside, the middle of which is bonded with mesh polyvinyl alcohol water-soluble yarn and kraft paper bag. Because the water-soluble yarn of vinylon can be dissolved in 80 ℃ hot water without acetal treatment, the used waste bags are recycled after hydrolysis, which does not pollute the environment. "New paper plastic composite bag industry" and the connotation of alternative products. According to the evaluation system and quantitative index system of "new paper plastic composite bag industry" and its substitutes, this paper deduces and accurately forecasts the development of China's paper plastic composite bag industry from a new perspective. On this basis, it makes a comprehensive study on China's administrative divisions and the development of paper plastic composite bag industry in four metropolitan areas. The paper plastic composite bag is made of refined white kraft paper or kraft paper, and the inside is made of plastic woven cloth. The plastic particles PP melt through high temperature and high pressure, and the kraft paper and plastic woven cloth are combined together. The inner bag can be added. The paper plastic composite bag is equivalent to the seam bottom open pocket. It has the advantages of good strength, waterproof and moisture-proof. Paper plastic composite bag - composite plastic woven bag is made of plastic woven bag (cloth for short) as the base material and compounded by tape casting method (cloth / film composite is two in one, cloth / film / paper composite is three in one). The paper plastic composite bag has no special electrostatic safety characteristics, so it is not recommended for the treatment of sensitive flammable dust and powder. In addition, they cannot be used in the presence of dust clouds or flammable solvent vapors. This kind of paper plastic composite bag is usually made of ordinary woven polypropylene cloth, which is an insulator. Sometimes, according to the use requirements, type a paper plastic composite bag will use inner lining bag or surface coating treatment.
Dongguan Beite packaging materials Co., Ltd. - located in Dongguan City, the world's manufacturing city, is a subsidiary of Beite packaging (China) Co., Ltd., with a plant area of 6000 square meters. It is a flexible packaging enterprise integrating R & D, production and sales. It has a complete set of domestic advanced production equipment, a scientific and humanized management system and a group of experienced technical personnel For backing, to provide customers with quality products and first-class service.
The company produces composite bags, roll film, fruit bags, aluminum foil bags, suction mouth bags, self-supporting bags, zipper bags, anti-static bags, special-shaped bags, etc., which are suitable for the internal and external packaging of food, daily chemicals, electronics, toys, medicine, cosmetics, industrial products and other industries.
We uphold the integrity of cooperation, good quality, good service business philosophy, won the industry's approval, products sold to all over the world; welcome friends from all walks of life to inquire, visit our factory to investigate guidance and business negotiations. Mr. Li 13112852595