For thermoset polymer compounds, cross-linking between the growing polymer chains occurs during the polymerization reaction, so the production and processing steps need to be combined when working with these compounds.
In powder coating, a dry polymer powder is applied to an object. Powder coating is less harmful to the environment than traditional wet spray painting because it produces lower VOC emissions.
Extruders are used to produce plastic products such as flexible pipes and plastic sheets. They can also be used to mix materials.
Calendering is used to produce a variety of sheet-like polymer products. In particular, it is the leading method for processing vinyl.
Film blowing is used to manufacture thin sheets of plastics from a melted polymer.