Sheet co-extrusion is a technique for making flat plastic sheets from a variety of resins. It can do multi-layers sheet. The thinner gauges are thermoformed into applications such as drink cups, deli containers, produce trays, baby wipe containers and margarine tubs. Another market segment uses thick sheet for industrial and recreational applications like truck bed liners, pallets, automotive dunnage, playground equipment and boats. The third primary use for extruded sheet is in geomembranes, where flat sheet is welded into large containment systems for mining applications and municipal waste disposal. Plastic machine: PP PS sheet/plate extrusion/production line