Under water cutter technology for engineering plastics

Product catalog summary

Introduction
The document provides an overview of the underwater cutting system (UWC) developed by Japan Steel Works, Ltd. (JSW) for use in the plastics machinery sector. The focus is on improving pellet shape and uniformity in engineering plastics with high melting points.

Specifications
The UWC system is designed to ensure continuous operation and automatic start-up. It achieves uniform pellet size and shape through precise die hole design and cutter rotation speed control. The system is capable of maintaining die plate temperatures over 300℃ using an electric heater, eliminating the need for additional heating equipment.

Procedures
The UWC system is suitable for mass production of polyolefin and is practical for engineering plastics. JSW offers performance trials at their Extrusion Technical Centers to address customer challenges.

Features

Uniform and fluid pellet shapes are achieved with the UWC system.
JSW provides a complete extruder package, including extruder, pelletizer, and dryer.
The system supports stable operation during the molding process due to pellet uniformity and fluidity.

Comparison of Cutting Methods
The document includes figures comparing different cutting methods, highlighting the advantages of the UWC system over traditional strand cutting methods.

Conclusion
JSW's advanced UWC technology is based on extensive experience in polymer processing machinery, aiming to enhance pellet shape and improve the efficiency of engineering plastics production.

Catalog excerpts

Under water cutter technology for engineering plastics-1

The Japan Steel Works, Ltd. Plastics Machinery Business Division Under water cutter technology for engineering plastics Under water cutter system (UWC) which originally used for mass production of polyolefin is also practical for engineering plastics with high melting points. Based on experiences and knowledges in manufacturing experience on advanced under water cutter system which purposes the pellet shape improvement. Features ■Uniform and fluidity shape pellets can be obtained from under water cutter system. can provide total extruder package including extruder, pelletizer and dryer. Heater enable to heat up and maintain Die Plate temperature over 300℃ without installing additional heating equipment. Comparison in cutting method ・ Continuous operation ・ Auto start operation at start up stage. ・ Uniform pellet size and shape from die holes design and cutter rotation speed control. ・ Pellet uniformity and fluidity enable stable operation while molding process. Strand cutting system ・ Strand disruption cause operation suspension. ・ Cutting depends on taking-over speed causes uneven pellet shape and size. ・ Void in pellet is source of moisture or contaminant. Japan Steel Works, Ltd. Tokyo Head Office Gate City Osaki West Tower 1-11-1, Osaki, Shinagawa-ku, Tokyo 141-0032, Japan JSW continues to develop under water cutting system on a wide range of engineering plastics. JSW provides performance trial for customers’ challenges at Extrusion Technical Centers. Europe (Germany) China (Shanghai)

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