This twin-screw extrusion line adopts high-vacuum degassing, saving drying equipment and cutting energy use by 25%–40% with over 30% smaller footprint. Short residence time reduces PET thermal degradation for better toughness. It supports up to 100% RPET while retaining high transparency. Melt pump control ensures sheet thickness within ±1%. Independent three-roll servo drive avoids surface defects and warping.
Model | Single Layer | Multi layer | Highly-efficient |
Extruder specification | JW75/40-1000 | JW75&36/40-1000 | JW95&52/44-1500 |
Sheet thickness | 0.15-1.5mm | 0.15-1.5mm | 0.15-1.5mm |
Main motor power | 110kw | 110kw/45kw | 250kw/55kw |
Max extrusion capacity | 450kg/h | 500kg/h | 800-1000kg/h |
High-Vacuum Degassing Technology: Single-screw production lines typically require expensive crystallization and drying systems—a process that takes several hours and consumes a vast amount of electricity. In contrast, twin-screw lines are equipped with a multi-stage, high-vacuum degassing system that extracts moisture directly during the extrusion process, thereby eliminating the need for a separate drying step and reducing the overall footprint by over 30%. Consequently, the energy consumption of the entire line is reduced by approximately 25% to 40% compared to single-screw lines.
Reduced Thermal Degradation: PET is highly sensitive to both moisture and temperature. Twin-screw extruders feature superior shear dispersion capabilities and shorter material residence times, allowing for precise control of the melt temperature. This effectively inhibits the hydrolytic degradation of PET molecular chains, ensuring that the resulting sheets possess enhanced toughness and remain free from brittleness.
High-Proportion Recycled Material Utilization: The powerful compounding capabilities of twin-screw extruders enable them to effortlessly process up to 100% recycled PET bottle flakes (RPET), while still maintaining a level of transparency in the finished product that rivals that of virgin materials.
Melt Pump Closed-Loop Control: The system comes standard with a high-precision melt gear pump, which minimizes pressure fluctuations generated by the twin-screw extruder. This ensures a pulsation-free melt flow, guaranteeing that the thickness tolerance of the extruded sheets is maintained within ±1%.
Independent Three-Roll Drive System: The rotational speed of the three calendering rolls is independently controlled via servo motors. This ensures constant tension on the sheet as it cools and contracts, thereby preventing the formation of water marks on the surface and eliminating warping.
PETG is called low temperature PET, it's a new environment-friendly packing material with features such as high luster, good transparency, excellent barrier property, self-adhesion, which is used for glue bonding and high-frequency processing.
CPET is a kind of modified PET with good resistance to high temperature, it is usually used for package in microwave oven.
PET Stereoscopic Optical Grating Sheet: It can be used as top grade package for cosmetics, medicine, tobacco&alcohol and common goods such as stationery, advertisements, posters and all kinds of cards.
Jwell started manufacturing screws and barrels in 1978, making it one of the earliest screw and barrel manufacturers in China. Its brand, "Jinhailuo", has become well recognized in the industry. In 1997, Jwell was established to begin the production of extrusion machinery. Today, Jwell is the vice president unit of the China Plastics Machinery Industry Association and one of the technology leaders in the extrusion machinery industry.
