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PVC Plastic bag material characteristics, advantages
- Aug 02, 2017 -

PVC with flame-retardant (flame-retardant value of more than 40), high chemical resistance (resistant to concentrated hydrochloric acid, concentration of 90% sulfuric acid, concentration of 60% of nitric acid and concentration of 20% of sodium hydroxide), mechanical strength and electrical insulation of good advantages. But its heat resistance is poor, softening point for 80 ℃, in 130 ℃ began to decompose discoloration, and the separation of HCI
PVC has a rich raw material (petroleum, limestone, coke, salt and natural gas), the manufacturing process is mature, low price, wide use, and other salient features, has now become the world's second only to polyethylene resin, the world's total resin consumption of 29%. PVC is easy to process, can be molded, laminated, injection molding, extrusion, calendering, blow molding Hollow and other methods of processing. Polyvinyl chloride is mainly used for producing soft plastic products such as artificial leather, film, wire sheath and other plastic products, such as plate, doors and windows, piping and valves.
Vinyl chloride was originally synthesized in the Justus von Liebig laboratory in 1835. PVC was synthesized by Baumann in 1872. But it was not until the 1920s that the first PVC trade product in the United States was produced, and in the next 20 years Europe began to produce large-scale production.
In simple words, the aqueous solution of salt is chemically decomposed in the current action. This process produces chlorine, caustic soda, and hydrogen. Refining, cracking oil or gasoline can produce ethylene. When chlorine and ethylene are mixed, two vinyl chloride is produced, and vinyl chloride can be converted to produce vinyl chloride, which is the basic component of polyvinyl chloride. The polymerization process connects vinyl chloride molecules together to form a polyvinyl chloride chain. The natural polyvinyl chloride in this manner is white powder. It can't be used alone, but it can be combined with other ingredients to be a natural product.
PVC is a kind of vinyl polymerization.
PVC is a PVC, bright luster, corrosion-resistant, strong and durable, because in the manufacturing process to increase the plasticizer, anti-aging agents and other toxic auxiliary materials, so its products generally do not store food and medicine.
PVC can be divided into soft PVC and hard PVC. The hard PVC accounted for about 2/3 of the market, soft PVC accounted for 1/3. Soft PVC is commonly used for flooring, ceilings and leather surface, but because soft PVC contains softener (which is also the difference between soft PVC and hard PVC), easy to brittle and easy to retain, so its scope of use has been limited. Hard PVC does not contain softener, so flexibility is good, easy to shape, not easy to crisp, non-toxic non-polluting, long retention time, so has a great development and application value. Hereinafter referred to as PVC. The essence of PVC is a vacuum blister film, used for all kinds of panel surface packaging, so also known as decorative film, adhesive film, used in building materials, packaging, medicine and many other industries. Building materials industry accounted for the largest proportion, 60%, followed by the packaging industry, there are a number of other small-scale applications of the industry.
PVC Full name is Polyvinylchlorid, the main ingredient is polyvinyl chloride, adding other ingredients to enhance its heat resistance, toughness, ductility and so on. It is a kind of synthetic material that is popular in today's world and has been widely used. Its global use is ranked second in all kinds of synthetic materials. According to statistics, only 1995 years one years of PVC production in Europe is about 5 million tons, and its consumption is 5.3 million tons. In Germany, the output and consumption of PVC are evenly 1.4 million tons. PVC is being produced and applied worldwide with a growth rate of 4%. In recent years, the growth of PVC in Southeast Asia is particularly evident, thanks to the urgent need for basic measures in Southeast Asian countries. PVC is the most suitable material in the material that can produce three-dimensional surface film.
PVC is PVC. PVC plastic bag is a plastic bag made of PVC processing. PVC in the process of production, to add plasticizers, anti-aging agents, colorants ... And so on a series of compounds, PVC plastic bags in the use, placement of the process of these toxic and even carcinogenic additives will be released. Thus the state designation of PVC plastic bags is not a food container or food packaging material. The plastic bags in the market have a doors that are PVC plastic bags.