Sheet Extrusion

Sheet is distinguished from film by its thickness: anything over 0.25-mm is considered sheet. The process closely resembles cast film extrusion. Thinner sheet is typical thermoformed into trays, clam shells, cups or bowls, whereas thick sheet may be used for signage, refrigerator liners and truck bed liners. Common sheet extrusion materials include PET, high-density polyethylene, polystyrene and ABS. Sheet can be produced in either single or multi-layer formats.

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Sheet Processor Adds Capacity in Coronavirus Fight

Laminex is venturing into APET for first time to make PPE in Mexico, after purchasing one of PTi’s demo production lines. The turnkey system will ultimately be used by Laminex for its packaging products.
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Extrusion: Important Polymer Melting Equations for Extrusion Processors

The more you know about what happens in a screw, the more you’ll be able to work with your supplier to optimize design.