A sheet extrusion line is a manufacturing system that produces plastic sheets by melting and extruding plastic raw materials through a die. It typically consists of an extruder (single or twin screw), a screen changer, a gear pump, a static mixer, and a flat sheet die. The molten plastic is extruded through the die, forming a continuous sheet that is then cooled by a roll stack and cut to length or wound into rolls. Sheet extrusion lines can process various thermoplastic materials such as ABS, PE, PP, PET, PC, and PMMA. They are widely used in industries like packaging, construction, and automotive for producing sheets for applications such as food trays and stationary accessories.