Sheet Extrusion is a converting technique for the mass production of flat plastic sheet
from a variety of resins
. The molten polymer is extruded over onto a specific set of cooling rolls which will define the sheet thickness. Thinner gauge sheets are thermoformed into packaging applications such as drink cups, deli containers, produce trays, baby wipe containers, and margarine tubs.
The sheet thickness range is typically from 200 microns up to 15 mm and can be either monolayer or multi-layer.
Polyethylene (PE), polypropylene (PP) and polystyrene (PS) are the most widely used resin for sheet extrusion.