Industry

Ultra-High-Molecular-Weight Polyethylene(UHMWPE) fiber, also known as ultra-high modulus polyethylene (UHMPE) fiber or extended chain polyethylene (ECPE) fiber, emerged in the early 1990s as the third generation of high-strength, high-modulus fibers. It has a molecular weight ranging from 1 to 6 million and a linear, straight-chain structure with nearly 100% orientation, making it the strongest fiber available with excellent mechanical properties. As one of the world's three leading high-tech fibers (alongside the carbon fiber and then aramid fiber), UHMWPE fiber boasts resistance to ultraviolet radiation, chemical corrosion, high energy absorption, low dielectric constant, high electromagnetic wave transmission, low friction coefficient, and outstanding impact and cut resistance.

-Insulation material in wires and cables- An insulating layer around metal wires prevents current loss or short circuits. Resins, fillers, and additives are mixed and processed through a twin-screw extruder to produce pellets, which serve as raw materials for making wires and cables.

Twin screw extruder can compound and extrude not only the regular plastic, but also the special materials, such as the high performance thermoplastic that is utilized in electronics, aviation, aerospace, and military fields.

Engineering plastic modification refers to enhancing the strength, impact resistance, and flame retardancy of regular plastics through filling and compounding processes.

Biodegradable plastics break down under natural conditions like soil or sand, or specific conditions such as composting, anaerobic digestion, or aqueous environments. This degradation is driven by microorganisms, resulting in carbon dioxide (CO2) and/or methane (CH4), water (H2O), mineral salts, and new biomass. Based on raw material sources, biodegradable plastics are classified into bio-based (e.g., PLA, PHA) and petrochemical-based (e.g., PBAT, PBS, PPC, PGA) .

In the polymerization reactions industry, the twin-screw extruder serves as a continuous reactor for polymers. It processes reactants, initiators, catalysts, and other components through heating, melting, mixing, reacting, extruding, and devolatilization to achieve the desired polymerization effect.   Using twin-screw extruders for continuous polymerization has distinct advantages over older batch reactor techniques： 1. the polymerization reaction in twin-screw extruders is a continuous process, resulting in time savings and high efficiency. 2. The twin-screw extruder creates an environment for evenly heating and blending the polymer. 3. Efficient heat exchange reduces unexpected reactions, and multi-point feeding increases process flexibility and adaptability. 4. The modular design and precise multi-point temperature control of twin-screw extruders enable real time monitoring of polymer morphology and reaction outcomes.

In the global carbon reduction trend, recycled plastics are getting more attention for helping us achieve carbon peaking and neutrality goals. Co-rotating twin-screw extruders, essential for plastic compounding, also play an important role in recycling plastics. They not only transform irregular recycled plastics into uniform pellets but also enhance their properties and can even depolymerize them into desired chemical monomers.

Twin-screw extruders are widely used for devolatilization in various polymers and rubbers.   Advantages of twin-screw extruders in devolatilization: 1. The devolatilization process in twin-screw extruders is a continuous process. 2. Efficient heating and precise temperature control enable thermal balancing and heat evaporation 3. High devolatilization efficiency, with continuous surface renewal during screw rotation, accelerates evaporation. 4. Modular design provides flexibility and allows for precise devolatilization with multi-stage vacuum ports at varying vacuum levels and air speeds.

The polyolefins comes from a powder form which is prone to oxidative degradation. This complicates its storage, transportation, and downstream applications. Therefore, granulation is necessary to stabilize performance. The polyolefins come in a powder form prone to oxidative degradation，complicating storage, transportation, and downstream applications, thus necessitating granulation to stabilize their performance. PP and PE powders are combined with additives like antioxidants and aging inhibitors. They are then processed in an underwater Pelletizing system to become uniform pellets, which simplifies its storage and transportation. They are then processed in an underwater pelletizing system to produce uniform pellets, which simplifies storage and transportation system to become uniformed (or equal) pellets, which simplifies its storage and transportation 

Masterbatch refers to a concentrated mixture of excessive additives in resins. In plastic manufacturing, it replaces the need for separate additives, making the process more efficient, stable and eco-friendly.

Thermoplastic elastomers combine the high elasticity, aging resistance, and oil resistance of traditional cross-linked vulcanized rubber with the ease of processing of regular plastic. They are mainly divided into chemically synthesized types and rubber-plastic compounded types, based on different processes. The former appear in polymer form and include main chain copolymers, graft copolymers, and ionomers. The latter are compounds of rubber and resin, including dynamically vulcanized rubber (TPE-TPV) and interpenetrating polymer networks (TPE-IPN). The production process involves metering, compounding, melting, extruding, and pelletizing the main materials and additives using a twin-screw extruder.