Principles of Selection of Plasticizing Barrel Assembly and Design of Injection Molding Nozzle Components Considerations: Conveying section, compression section, metering section, three-section ratio, compression ratio, depth of metering section screw groove, length-diameter ratio, number of teeth. Selection principles a.For good mixing effect, a design with a large length-diameter ratio, more teeth, high compression ratio, and shallow metering section screw groove should be used, such as PA, PE, PP, and POM. b.To prevent shear overheating, a design with a small length-diameter

Main factors affecting plasticizing quality The main factors affecting plasticizing quality are: length-to-diameter ratio, compression ratio, back pressure, screw speed, and barrel heating temperature, etc. Length-to-diameter ratio: the ratio of the effective working length of the screw to the diameter of the screw. a.A larger length-to-diameter ratio makes feeding more uniform; b.Plastics with better thermal stability can use longer screws to improve compounding without burning, while plastics with poor thermal stability can use shorter screws or screws without threads at

Several important geometric parameters of screws Screw diameter (D) a.Related to the required injection volume Ejection volume=1/4 × π × D ²× S (ejection stroke) × 0.85 b.Generally speaking, the diameter D of the screw is inversely proportional to the maximum injection pressure and directly proportional to the plasticizing ability. Conveying section a. Responsible for the transportation, extrusion, and preheating of plastics, ensuring preheating to the melting point; b.Crystalline plastics should be longer (such as POM, PA), followed by amorphous

The main part of the pin screw is a common screw, and the locking pin can be set in the groove of the melting section or metering section of the screw, or on the smooth cylindrical surface at the end of the metering section without a screw groove. The locking pins are arranged in a certain way with varying density and quantity. The cylindrical locking pins are assembled into the holes of the screw, while the square or diamond-shaped locking

The 35th International Plastics and Rubber Industry Exhibition will be held in Shenzhen, China from April 17th to April 20th. Superior Machinery will participate in this exhibition. Booth No.: 9Y59 (Hall 9) We look forward to meeting you there. ——Ningbo Superior Machinery Team  

Dear Customers, Thank you for your cooperation and support in 2022. SUPERIOR will continue to provide you with superior quality products and services. Thank you again!Looking forward to our close cooperation in the future. Ningbo Superior Machinery Team

K 2022–The World’s No.1 Trade Fair for Plastics and Rubber 19-26 OCTOBER 2022 ,Germany Looking forward to seeing you next time@Ningbo Superior Team

The most important exhibition on Chinese panorama for Plastic and Rubber Industry, is coming. Superior Machinery will also attend this event from April 25th to 28th. This will be a celebration for discovering the wide-ranged screws,barrels and accessories designed for plastic processing equipment and machinery. Come and visit us at Shanghai National Convention& Exhibition Center, Booth 4.1 A07. Write to info@superior-machinery.com. We look forward to see you in Shanghai!

Dear Customers, another year has come to an end, we would like to thank you for the cooperation along 2021. It was a particularly difficult time for both of us due to the spread of COVID-19. Despite the inability to attend exhibitions outside of China and to meet as before, we have carried out great efforts to improve our service and guarantee the highest quality standards, always investing in innovation. The coming new year is called in China the “Tiger