Polycarbonate Plastics Extrusion | Process & Materials | Covestr

First step to large, high quality parts

Extrusion: Flat or profile – your choice

The extrusion process is used to produce flat film and sheet, or to produce finished profile parts. Makrolon® polycarbonate is utilized for clear sheet and film applications including signs, automotive gauges and architectural glazing. Bayblend® (PC+ABS; PC+ASA blend) and Makroblend® (PC+PBT; PC+PET blend) are used for opaque applications in, for example, recreational vehicles, spas, tractors, and heavy trucks.

Makrolon® Sheets
Makrolon® Sheets

In the extrusion process, raw resin is fed into an extruder that melts the material and forces it through a die to produce flat sheets or profiles of various lengths, widths, and thicknesses with uniform cross sections.

Sheet, film and profiles can be produced in colors and with high or low gloss smooth or textured surfaces. Multiple layers can be utilized to add features such as weatherability and chemical resistance.

Once solid sheets are fabricated, they can be further processed through thermoforming into finished parts. These parts can be assembled utilizing the same fabrication and joining techniques that are used for injection molded parts. Finished parts are frequently painted for exterior applications.

In addition to single and monolayer sheet, sheet can also be produced with a profile via multi-wall sheet extrusion. These multi-walled sheets are used in building and construction

Makrolon® polycarbonate film is frequently printed and pressure formed to produce transparent bezels for applications such as instrument panels and cell phones.

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