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Compression Molding
Compression molding (also known as press molding or compression molding) is a process in which powdered, granular or fibrous plastics are placed into a mold cavity at molding temperature, and then the mold is closed and pressurized to form and solidify it. Compression molding can be used for thermosetting plastics, thermoplastics and rubber materials. Introduction
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Extrusion Molding
Extrusion molding is also called extrusion molding in plastic processing. It is a processing method that uses hydraulic pressure on the mold itself to extrude. It refers to the action between the barrel and the screw of the extruder, while being heated and plasticized, and being pushed forward by the screw, and continuously passing through
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Composition and maintenance of plastic extruder
Composition of plastic extruder A plastic extruder is a complex piece of machinery composed of several key components that work together to process raw plastic materials and shape them into specific forms. Here are the primary components typically found in a plastic extruder: Hopper: Barrel: Extruder Screw: Die: Heating Elements: Cooling System: Drive System: Control
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Common faults and corresponding solutions of plastic extruders
Plastic extruders, like any complex machinery, can experience various faults and issues that may affect their performance and productivity. Some of the common faults that can occur with plastic extruders include: Material Blockages:Blockages in the extruder barrel or die can occur due to material buildup, improper melting, or foreign objects entering the system. This can
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Polystyrene (PS)
Polystyrene (PS) is a polymer synthesized from styrene monomers by free radical addition polymerization, and its chemical formula is (C8H8)n. It is a colorless and transparent thermoplastic with a glass transition temperature higher than 100°C, so it is often used to make various disposable containers that need to withstand the temperature of boiling water, as
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Polyvinyl chloride (PVC)
Polyvinyl chloride (PVC) is the third largest synthetic polymer plastic in the world (after polyethylene and polypropylene ), with an annual production of about 40 million tons of PVC. PVC is a polymer formed by the polymerization of vinyl chloride monomer (VCM) in the presence of initiators such as peroxides and azo compounds or under
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