Article List

• How To Optimize The Single-Screw Extruder for Melt Feeding When A Twin-Screw Extruder Is Followed by A Single-Screw Extruder?

  This article discusses how to optimize a single-screw extruder for melt feeding when it follows a twin-screw extruder in a compounding production line. It focuses on the importance of the metering channel depth in the single-screw extruder, as this affects the specific throughput rate and discharge temperature. A deeper metering channel reduces the specific throughput rate and increases the discharge temperature, which can degrade sensitive additives like flame retardants. The article presents a case study of a 15-inch diameter screw with an initial metering channel depth of 1.73 inches, which leads to inefficiencies. It then proposes an optimized screw design with a shallower channel depth of 1.18 inches, improving throughput and reducing discharge temperature. The optimized screw requires additional torque, and its design factors include screw lead length and metering channel depth as a percentage of screw diameter.

  Products Release March 06, 2025
• Indispensable Precision Metering Component – Melt Pump

  This article introduces the melt pump, a crucial component used for transporting high-temperature molten materials in various industries like plastics, rubber, chemicals, and food processing. It explains the working principle of the melt pump, which is based on a gear pump mechanism, and describes its three stages: intake, transfer, and discharge. The article also covers different types of melt pumps, including straight tooth, helical tooth, and screw tooth pumps, highlighting their unique features and applications. Additionally, it discusses the key functions of melt pumps, such as pressure stabilization, precise metering, and improved mixing efficiency, as well as their key performance indicators, including flow rate, temperature, and pressure.

  Products Release March 03, 2025
• Causes of Excessive Smoke During Elastomer Pelletizing And Preventive Measures in Formulation And Process

  This article discusses the causes of excessive smoke during elastomer pelletizing and the preventive measures to address the issue. Key causes of smoke include raw material quality problems (such as impurities and moisture), improper temperature control in the extruder, excessive extrusion speed, and formulation issues (e.g., low-viscosity or low-flashpoint oils). The article suggests several preventive measures, including optimizing the formulation by selecting high-temperature-resistant materials, improving pelletizing processes by controlling temperature and extrusion speed, maintaining equipment regularly, and using high-quality base materials and oils. These measures help reduce smoke formation, improve safety, and enhance pellet quality during the elastomer pelletizing process.

  Products Release February 27, 2025
• Selection of Plastic Additives

  This article discusses the selection principles and specific applications of plastic additives. Additives should be chosen based on the intended purpose, ensuring they can fully perform their functions and meet the required standards and performance specifications. Various types of additives and their applications are listed, including toughening, reinforcing, flame retardant, antistatic, conductive, magnetic, thermal conductivity, heat resistance, transparency, wear resistance, insulation, and barrier properties. The selectivity of additives for different resins is also addressed, highlighting the effectiveness of red phosphorus, nitrogen-based flame retardants, nucleating agents, and glass fiber heat resistance modifiers for specific resins. For example, red phosphorus is effective for PA, PBT, and PET, while nucleating agents work well for copolymer polypropylene.

  Material Introduction February 24, 2025
• Twin-screw Granulator Main Engine Operation Precautions And Shutdown Operation Methods

  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.

  Products Release February 20, 2025
• When Is The Best Dyeing Effect for TPE\TPR? How To Ensure Uniform Dyeing

  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.

  Material Introduction February 17, 2025
• How To Clean The Extruder Screw!

  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.

  Products Release February 13, 2025
• Solution To The Problem of TPE Strands Breaking As Soon As They Are Extruded During Pelletizing

  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

  Material Introduction February 10, 2025
• TPE\TPR Granulation, Corresponding Selection Experience of Hard Segment Materials

  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

  Material Introduction February 06, 2025
• 2025 Chinese New Year Holiday Notice

  Chinese New Year Holiday Notice

  Notice January 23, 2025