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When operating a twin-screw pelletizer, special attention must be given to the main machine to ensure stable performance. Key precautions include maintaining proper current levels, monitoring pressure sensors, and checking lubrication oil pressure. Shutdown operations fall into two categories: normal shutdown and emergency shutdown. Normal shutdown involves gradually stopping feeding, reducing screw speed, and turning off auxiliary equipment. In case of an emergency, the operator should press the emergency stop button and cut off power immediately before troubleshooting the issue.

There are two main dyeing methods for TPE/TPR: dyeing before granulation and dyeing before molding. Dyeing before granulation ensures better color uniformity and production efficiency, while dyeing before molding offers more flexibility but may result in uneven color distribution. To achieve uniform dyeing, manufacturers should use masterbatch instead of color powder, optimize mold temperature, minimize release agent usage, and ensure high-quality raw materials. Other factors, such as injection speed and mold exhaust, also impact color consistency and should be carefully controlled.

This article describes three extruder cleaning methods: 1.Resin Cleaning: Uses polyester or epoxy resin to clean new or used equipment, removing residual materials to prevent extrusion issues like reduced speed or color differences. 2.Disassembly and Cleaning: Involves adding washing material, stopping feeding, and disassembling the extruder to remove residual material and clean the screw and die head. 3.Fire Baking: A blowtorch is used to burn off plastic from the screw, leveraging the screw's heat to clean effectively.

When TPE strands are cut into pellets, the problem of the extruder die head breaking as soon as it is pulled out can be located and solved from the following four aspects:1. Adjust the plasticizing temperature 2. Adjustment of oil filling amount 3. Filler adjustment 4. SEBS content adjustment

In the TPE/TPR granulation process, the selection of hard segment materials directly affects the physical properties and processing performance of the product. The following are relevant experiences: 1. Optional hard segment materials 2. Selection principles of hard segment materials

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Classification of twin screw extruder

Process parameters affecting internal mixer mixing 1. Mixing procedure and order of adding materials 2. Mixing temperature 3. Mixing time 4. Rotor speed