Plastic extrusion companies support a global industry valued at more than $185 billion, with the North American market accounting for 21% of that volume.
The Extrusion Process
The plastics extrusion process begins with resin in a hopper being fed into a barrel. A screw within the barrel mixes, heats and pushes the resin through a die that creates the product’s desired shape. Heating bands or cooling devices can be used to regulate the temperature of the resin in the barrel.
Several types of extrusion are available, including:
Plastic extrusion companies serve a wide range of end markets, such as:
Resins typically used in plastics extrusion include polyethylene, polypropylene, acetal, acrylic, nylon, polystyrene, PVC, ABS and polycarbonate. Each is used for specific applications.
For instance, low density polyethylene (LDPE), which accounts for the largest segment of plastics extrusion, is used to make garbage bags, industrial sheeting, construction and agricultural coatings, produce bags and bakery films, as well as cable sheathing, among other items.
Polystyrene, on the other hand, is used in consumer products like frames, cable ducts, tubes, sale displays/signage, containers, bottles, trays, tumblers and disposable cutlery.
Plastic extrusions also are used an alternative to aluminum and wood in doors and windows, thanks to their excellent insulating properties and resistance to sun, wind and water exposure.
Visit polysort.com for a comprehensive list of plastic extruders.