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Extrusion
Extrusion is a technique used to manufacture plastic products such as strips, rails, seals, etc.
An extruder transports and melts plastic through a moulding tool, a nozzle, which determines the shape and thickness of the product. The product is then cooled immediately in water or by air, and cut into pre-programmed lengths.
Extrusion is usually a fully-automatic process with continuous dimension checks and automatic machine adjustment, which enables the manufacture of products from simple tubes and rods, to extremely complex window profiles. Extrusion also enables the manufacture of very large products, such as pipes with a diameter up to 150cm.
Most types of plastic can be extruded, and it's possible to manufacture with several different plastic types in the same production process. This is known as co-extrusion and is used, for instance, in the manufacture glazing strips with integrated sealing strips.
The plastic can also be extruded around other products, such as conducting or stabilising materials. This technique is used to manufacture Primo ExtruSwitch.
As an extension of the extrusion process, Primo can perform a variety of finishing work on plastic products. These include in-line machining, for instance, for the application of film, printing of barcodes, bending, etc. Finishing work can also include drilling, folding, welding, gluing and more.
Primo can supply all types of extruded profiles from the simplest to the most complex. |
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