Plastic Molding
Plastic molding is made from synthetic resin polymer manufacturer of plastic products made from the final process
. Processing methods (often referred to as a plastic processing), including compression molding (molding), extrusion (extrusion), injection (injection molding), blow (Blow Molding), rolling, etc.
Compression molding
Also known as compression molding or pressing molding, compression molding is mainly used for phenolic resins, urea-formaldehyde resin, unsaturated polyester resins and other thermoset molding.
Extruded
Extruded, also known as extrusion molding, extrusion machine is used (extruder) through the continuous heating of the resin mold, the shape of the products out of the required methods. Sometimes there was extruded thermosetting plastic molding, foam molding can be used. The advantage is extruded out of the products of various shapes, high production efficiency, can be automated, continuous production; drawback is not widely used thermosetting plastics processing this method, product size, prone to bias.
Injection
Injection, also known as injection molding. Injection molding machine is used (or injection machine) in the thermoplastic melt under high pressure injected into the mold after cooling, curing method to obtain the product. Thermosetting plastic injection molding can also be used, and foam molding. Injection has the advantage of producing fast, efficient, operation can be automated, to forming the shape of complex parts, especially for mass production. The disadvantage is the high cost of equipment and tooling, injection molding machines and other cleaning more difficult.
Blow
Blow molding, also known as Blow or hollow. Blow with compressed air pressure is so close in the heat of the resin mold Parison inflation as a way of hollow products, including blown film and blow molding blow molding hollow products of two ways. With the blow molding method to produce thin-film products, all kinds of bottles, barrels, pots and other containers and children's toys.
Rolling
Co-calendar is the resin is expected to handle a variety of chemical additives (kneading, filtration etc.) through the calendar of two or more turn in the opposite gap calendering rolls processed into film or sheet, then roll from the calendar on the stripped down , then cooling and shaping a molding method. Calendar is mainly used for PVC resin molding method, capable of producing thin-film, sheet, plate, leather, tile and other products.
GE Plastics
GE Plastics has five species, namely polyethylene, polypropylene, polyvinyl chloride, polystyrene and ABS. They are thermoplastics.
Polyethylene (PE)
Polyethylene is the plastic industry, the highest yield varieties. Polyethylene is opaque or translucent, lightweight crystalline plastic with excellent low temperature performance (the lowest temperature up to -70 ~ -100 ), electrical insulation, chemical stability, the ability of most of the pH of the erosion, but not heat. Polyethylene suitable for use on injection molding, blow molding, extrusion and other processing methods.
Polypropylene (PP)
Polypropylene is a thermoplastic derived from propylene polymerization, usually colorless, transparent solid, odorless non-toxic, density of 0.90 to 0.919 g / cm 3, is the lightest of GE Plastics, with its advantage is in the water cooking characteristics of resistance, corrosion resistance, strength, rigidity and transparency than the polyethylene is good, the disadvantage is the poor low-temperature impact-resistant, easy to aging, but can be modified and, respectively, by adding additives to be improved. Polypropylene production methods are slurry, liquid bulk and gas phase three kinds.
Polyvinyl chloride (PVC)
PVC is derived from the polymerization of vinyl chloride plastics, by adding plasticizers, its hardness can be significantly changed. It is made of soft goods, hard goods as well as have a wide range of uses. The production of PVC suspension polymerization method, emulsion polymerization and bulk polymerization, suspension polymerization to the main.
Polystyrene (PS)
Polystyrene is a versatile polymer of styrene, the appearance of transparent, but brittle shortcomings, therefore, can be made by adding polybutadiene impact-resistant polystyrene (HTPS). The main production methods polystyrene bulk polymerization, suspension polymerization and solution polymerization.
ABS
ABS resin is acrylonitrile - butadiene - styrene co-polymer product of three kinds of monomers, referred to as ABS terpolymer. The plastic components because of its A (acrylonitrile), B (butadiene) and S (styrene) in the proportion of different composition, as well as differences in manufacturing methods, and its very different nature. ABS is a combination of injection molding and extrusion, and therefore its use is mainly the production of these two types of products
by: carkey jone
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