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Development Trends of Extruders

Time：

2021-06-21

1. Modularity and Specialization Modular production of plastic extruders can accommodate the specific requirements of diverse customers, shorten the R&D cycle for new products, and help capture a larger market share. Meanwhile, specialized manufacturing enables the systematic modules and components of extrusion equipment to be produced at designated locations or even sourced globally, which is highly beneficial for ensuring overall quality, reducing costs, and accelerating capital turnover.

1. Modularization and Specialization
Modular production of plastic extruders can accommodate the specific requirements of diverse customers, shorten the R&D cycle for new products, and help capture a larger market share. Meanwhile, specialized manufacturing enables the systematic modules and components of extrusion equipment to be produced at designated locations or even sourced globally, which is highly beneficial for ensuring overall quality, reducing costs, and accelerating capital turnover.
2. Multifunctionality
The efficiency of plastic extruders is primarily reflected in high throughput, low energy consumption, and reduced manufacturing costs. Functionally, screw-type plastic extruders are no longer limited to the extrusion molding and compounding of polymeric materials; their applications have expanded into such fields as food, feed, electrodes, explosives, construction materials, packaging, pulp, and ceramics.
3. Large-scale and high-precision
Scaling up plastic extruders can reduce production costs, with particularly pronounced benefits in large‑scale twin‑screw pelletizing lines, blown‑film extrusion lines, and pipe‑extrusion lines. For key technological equipment required to support national priority projects, the large‑scale extrusion‑pelletizing unit—one of the three critical pieces of equipment for major ethylene‑production facilities—has long relied on imports; therefore, it is imperative to accelerate domestic production to meet the needs of the petrochemical industry’s development.
4. Intelligence and Networking
In developed countries, plastic extruders have widely adopted modern electronic and computer control technologies to perform online monitoring of process parameters throughout the extrusion cycle—such as melt pressure and temperature, barrel temperatures at different zones, screw speeds of the main and feed screws, feed rate, raw‑material ratios, and motor current and voltage—and to implement microcomputer‑based closed-loop control. This approach is highly beneficial for ensuring stable process conditions and enhancing product precision.
Applications of Extruded Products
Thermoplastics and certain thermosetting plastics are suitable for extrusion molding. The resulting products include pipes, rods, sheets, profiles, films, monofilaments, flat tapes, and wires and cables. Extruded plastic products are widely used across various sectors of the national economy. Films, hollow articles, and strapping are key components of packaging materials; in agriculture and related industries, plastic films are extensively employed for seedling‑raising and greenhouse coverings; in the machinery sector, plastic rods facilitate the machining of diverse parts; and in the construction industry, extruded products such as wall panels and window sealing strips are increasingly prevalent. The petroleum industry also relies heavily on plastic pipes for oil‑transport pipelines. Moreover, extruders can perform preparatory operations—such as blending, plasticizing, dewatering, pelletizing, and feeding—or process semi‑finished materials. Consequently, extrusion has become one of the most common methods for shaping plastics.