It is stable, acid and alkali corrosion resistant and heat resistant.
1. PVC film has good printing performance, there is no need to make any treatment before printing. The film can be made into transparent or opaque film, and it can be printed with various patterns, decorative pattern which is bright in color. 2. PVC thin film has small breathability, which can reduce the influence of air humidity on the substrate artificial plates. 3. It is suitable for continuous production. 4. The surface is relatively soft, thus makes it easy to molding pressing with patterns, and it doesn't feel cold or hard. Uses: It can be applied to food, beverage, electrical appliances, medicine, daily necessities, toys, cosmetics, light industry, hardwae and other light weight and small size products. The special film for commodity labels after printing can be used as commodity tag, the set special mats is suitable for bottle cap packaging.
Polyvinyl chloride (Polyvinylchlorid, PVC) full name is Polyvinylchlorid, and the main component is polyvinyl chloride, in addition, other ingredients is added to enhance its heat resistance, toughness, ductility, etc. It is a kind of synthetic material which is popular and widely used in the world. It ranks the second in global usage among a variety of synthetic materials. According to statistics, only in 1995, there are about five million tons of PVC is produced in Europe, and its consumption is five million and three hundred thousand tons. In Germany, the average PVC production and consumption is 1.4 million tons. PVC is produced and applied in the world with the growing rate of 4% . In recent years, the growth of PVC in Southeast Asia is particularly significant, which is due to the urgent needs of the Southeast Asian countries to carry out infrastructure construction. PVC is the most suitable material for the production of 3D surface film.
Forming characteristics: 1. It is an amorphous material with small moisture absorption and poor mobility. In order to improve the mobility and prevent the occurrence of bubbles, plastics may be dried in advance. Mold gating system should be thick and short, and the gate section should be large without blind angles. The mold need to be cooled, and coated chrome on the surface. 2. Due to the corrosion and mobility, it is best to use special equipment and mold. All products are required to be added to different types and amounts of additives. 3. It is easy to decompose, and will be more likely to decompose under temperature of 200 degrees and meets steeland copper. And corrosive and pungent gas will escape from it when composition. It has a small temperature range of forming. 4. When using the screw injection nozzle, the aperture should be large to prevent the material is lagged at dead corners. It is best that it has no inserts, and if it has, the inserted parts should be preheated.
