Kunshan blow molding processing using a variety of technologies, a variety of materials, there are mainly several:
Polyethylene (PE) Polyethylene is a high yield variety in the plastics industry. Polyethylene is opaque or translucent, lightweight crystalline plastic, with excellent low temperature resistance (the lowest use temperature can reach -70 ~ -100℃), electrical insulation, good chemical stability, resistance to most acid and alkali erosion, but not heat resistance. Polyethylene is suitable for processing by injection molding, blow molding, extrusion and other methods. PE can be divided into low density polyethylene LDPE according to different density; High density polyethylene HDPE; Linear low density polyethylene LLDPE.
Polypropylene (PP) Polypropylene is a thermoplastic obtained from the polymerization of propylene, usually colorless, translucent solid, odorless and non-toxic, the density of 0.90 ~ 0.919 g/cm, is the lightest general plastic, its outstanding advantages are the characteristics of cooking resistance in water, corrosion resistance, strength, rigidity and transparency are better than polyethylene, The disadvantage is poor low temperature impact resistance and easy aging, but it can be improved by modification and addition of auxiliaries respectively. The production methods of polypropylene are slurry method, liquid phase bulk method and gas phase method.
Polyvinyl chloride (PVC) Polyvinyl chloride is a plastic obtained from the polymerization of vinyl chloride, and its hardness can be greatly changed by adding a plasticizer. It is made of hard products and soft products have a wide range of uses. The production methods of PVC include suspension polymerization, emulsion polymerization and bulk polymerization, and suspension polymerization is the main method.
Polystyrene (PS) Universal polystyrene is a polymer of styrene, the appearance of transparent, but has the drawback of brittle, therefore, by adding polybutadiene can be made into impact resistant polystyrene (HTPS). The main production methods of polystyrene are bulk polymerization, suspension polymerization and solution polymerization. Kunshan blow molding processing
ABS ABS resin is the product of polymerization of acrylonitrile, butadiene and styrene three monomers, referred to as ABS terpolymer. Due to the different proportions of its components A (acrylonitrile), B (butadiene) and S (styrene) in the composition, as well as the differences in manufacturing methods, the properties of this plastic are also very different. ABS is suitable for injection molding and extrusion processing, so its use is mainly to produce these two types of products.
Blowing pressure:
The production of general ABS resin blow molding products, blowing pressure is usually 0.4-0.6MPA. For ABS used in engineering plastics grade, such as heat-resistant ABS, PC/ABS alloy, its fluidity is poor, and the blowing pressure is generally more than 1MPA. For products with fine patterns on the surface, if the pattern is required to be clear, the blowing pressure should also be increased. For products with relatively high surface requirements such as blow molding automotive tail and subsequent spray painting treatment, blow molding requires products to be close to the mold in order to replicate the polished mold surface, often requiring blowing pressure to reach 1.5-2.0MPA. When the area of blow molding products is larger, the products are more complex, and the wall thickness is thinner, the higher the blowing pressure is taken, and vice versa. Higher blowing pressure also results in higher surface finish and dimensional stability. Practical surface, the use of higher blowing pressure, process adjustment will be easier, easy to obtain higher surface quality products.
Kunshan Fulong Plastic Hardware Co., Ltd. is a manufacturer committed to the development and production of blow molding processing products. The company sells all kinds of blow molding processing products all year round, the company looks forward to the majority of new and old customers to consult and buy with high quality service.
