Plastic manufacturing processes
From Plastics Wiki, free encyclopedia
There are many processing methods for polymers. Commercial processing equipment can range from a few thousand dollars to many millions of dollars. In addition to the equipment itself, tooling is generally required to make a particular shape. Most processes involve melting or softening the material and then forcing it into the desired shape. Other processes force a monomer or pre-polymer mixture into the right shape, then polymerize it in-place.
Main processing methods
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Extrusion
Process of forming a continuous piece of plastic by forcing it through a shaping orifice with or without the presence of heat. The opening through which the resins are forced gives the product its form, resulting in consistent thickness and gauge control.
Molding
A processing method which forms the rubber in the mold by the application of pressure and heat which shapes and cures the parts.
Thermoforming
Process of forming a thermoplastic sheet into a three-dimensional shape by clamping the sheet in a frame, heating it to render it soft and flowable. Then applying differential pressure to make the sheet conform to the shape of a mold or die positioned below the frame.
Recycling
All plastics can be recycled. The extent to which they are recycled depends upon both economic and logistic factors.
Coating
Plastic coating is the process of applying a thermoplastic to the surface of metal items to provide long-term corrosion, impact and chemical resistance whilst offering an attractive decorative finish.
Process: fluoropolymer resins • plastic additives • polyacrylate resins • thermoplastics • additive suppliers
Extrusion machine manufacturers • Injection molding machine manufacturers • List of plastic equipment • Plastic manufacturing processes • Plastics machinery • Polymer abbreviations • Resin manufacturers • polymer manufacturers
See also: Plastic thermoforming • Injection molding • Plastic welding • Plastic extrusion • Blow molding
