This article explores the structure, types, and functions of extruder screws, which are essential in resin processing. It distinguishes between single-screw and twin-screw extruders, highlighting their respective advantages in mixing and production efficiency. The document also discusses different screw designs, such as full-flight and mixing (darmage) screws, and their impact on resin blending and production output. The key takeaway is that selecting the right extruder screw depends on the specific application and desired balance between mixing efficiency and production capacity.

The article discusses essential equipment for TPE pellet production, including extruders, pelletizers, and auxiliary systems. Equipment choice depends on production scale, with larger setups requiring more advanced automation. Contract manufacturing is an alternative for companies with limited capacity.

Shear heat release occurs in extrusion as the screw's shearing action generates heat, affecting material temperature. Proper control through screw design, speed regulation, and cooling ensures process efficiency and product quality. It can also be leveraged to enhance material properties in specific applications.

Poor discharge or blockage in a plastic pelletizer machine head may be caused by foreign materials, heater malfunctions, or improper temperature settings. Solutions include inspecting and replacing the heater, cleaning the extrusion system, and adjusting temperature settings as needed.

This article outlines 12 common shoe sole materials, comparing their durability, flexibility, breathability, and resistance to wear, water, and temperature. Each material has unique advantages suited for different shoe types and uses.

This article identifies common misconceptions in masterbatch manufacturing and offers solutions for optimizing extrusion equipment. It highlights challenges in pigment dispersion and provides recommendations on screw configuration, shear force, and temperature control to improve product quality and efficiency.

Material overflow at the exhaust port during the TPE pelletizing process can impact production efficiency and product quality. The main causes include improper equipment configuration, inadequate temperature control, and poor filter management. To prevent overflow, manufacturers should ensure the feeding speed matches the main extruder speed, adjust the screw-barrel clearance, and install reverse conveying elements. Temperature should be precisely controlled to avoid incomplete plasticization or excessive material fluidity. Regularly replacing or cleaning filters and selecting appropriate filter apertures can also help prevent clogging and overflow. Implementing these measures ensures stable production and high-quality TPE pellets.

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.

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.

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.