PET sheet production line and production method

Abstract

This application relates to a PET sheet production line and a process for producing PET sheets. The sheet production line comprises an extruder, a die, and a calender arranged in a single processing direction. The extruder includes a cylinder and a twin-screw assembly located inside the cylinder. This twin-screw assembly consists of two meshing screws whose outside diameter decreases along the processing direction. The angle between the center axes of the two screws is between 10° and 1°20', and the two screws rotate about their respective center axes in opposite directions. This application improves the production line by taking into account the characteristics of PET, enhancing its plasticization, ensuring the quality of the PET sheets, increasing its production capacity, and reducing its energy consumption. Figure for abstract: 1a

Inventors

Chenggong Liu
YULIANG ZHOU

Assignees

QINGDAO SANYI PLASTIC MACHINERY CO., LTD.

Dates

Publication Date: 20260508
Application Date: 20251024
Priority Date: 20241106