Plastic extruder

This machine is primarily designed for extruding thermoplastic plastics such as soft and rigid PVC and PE. It can serve as the main unit for producing meltblown fabrics. When paired with appropriate auxiliary equipment—including forming dies—it can process a wide range of plastic products, including films, pipes, rods, sheets, filaments, tapes, non-conductive layers for cables, and hollow articles. Additionally, it can be used for plastic pelletizing. The machine features an excellent design, high output, superior plasticization, and low energy consumption. Its hard-toothed gear transmission ensures low noise, smooth operation, high load capacity, and long service life. Furthermore, this machine can be configured in a two-stage integrated design to enhance plasticization performance and improve extrusion stability. A specialized barrier-type comprehensive mixing system delivers outstanding blending results, enabling efficient low-temperature, low-pressure metering extrusion of materials requiring high shear and low melting temperatures. The design philosophy emphasizes speed while maintaining high flatness, thereby increasing production output. Working Principle Since its inception over two centuries ago, the plastic extruder has undergone significant evolution. Today, single-screw extruders have reached a mature stage. Typically, a single-screw extruder is divided into three functional zones: the conveying section, the compression section, and the metering section. The portion of the screw starting from the first thread onward is referred to as the conveying section. During this phase, the material should remain un-plasticized, serving mainly to transport the material forward. On larger-diameter extruders, cooling devices are often installed to prevent premature plasticization, thus avoiding any adverse effects on material transport caused by melting. Once the material passes through the conveying section, it enters the compression section. Here, the volume between the screw and the barrel decreases, while the temperature rises to the plasticization threshold, causing the material to compress—typically reducing its initial volume to about one-third of its original size, known as a 3:1 compression ratio. After completing plasticization, the material moves into the metering section, where it is quantitatively delivered to the die head for further processing into finished products. Product Features - Equipped with Guomao extruder gearboxes, ensuring stable quality and extended service life. - Utilizes Australian-brand variable-frequency motors. - Features an electrical control system tailored by engineers to meet specific customer needs, providing user-friendly operation. - Simple design and cost-effective pricing make it an attractive choice for single-screw extruders. Applications (1) Medical and Hygiene Textiles: protective clothing, wrapping cloths, face masks, diapers, feminine hygiene pads, etc.; (2) Household Decorative Textiles: wall coverings, tablecloths, bed sheets, bedspreads, etc.; (3) Apparel Accessories: linings, fusible interlinings, batting, shaped cotton, synthetic leather backings, etc.; (4) Industrial Textiles: filtration materials, non-conductive fabrics, cement packaging bags, geotextiles, covering fabrics, etc.; (5) Agricultural Textiles: crop protection fabrics, seedling mats, irrigation fabrics, thermal insulation curtains, etc.; (6) Other Applications: space cotton, thermal and sound insulation materials, oil-absorbent mats, cigarette filters, tea bag wrappers, and more.

Key words:

Plastic extruder

Classification:

Plastic extruder

Business Hotline:

400-0319-386

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Plastic extruder

This machine is primarily designed for extruding thermoplastic plastics such as soft and rigid PVC and PE. It can serve as the main unit for producing meltblown nonwoven fabrics. When paired with appropriate auxiliary equipment, including a die head, it is capable of processing a wide range of plastic products, such as films, pipes, rods, sheets, filaments, tapes, cable insulation layers, and hollow articles. It can also be used for plastic pelletizing. The machine features a well‑thought‑out design, high output, excellent plasticization, and low energy consumption. Equipped with hardened‑surface gear transmission, it offers low noise, smooth operation, high load capacity, and long service life.

This machine can also be designed as a two‑stage integrated system, enhancing plasticizing performance and ensuring stable extrusion. Its specialized barrier‑type comprehensive mixing design delivers superior blending for challenging materials, while enabling efficient low‑temperature, low‑pressure metering extrusion of high‑shear, low‑melt‑temperature polymers. Design philosophy and features: building on exceptional straightness, it boosts extrusion throughput.

Working principle

Since its inception, the plastic extruder has undergone more than two centuries of development. Today, single-screw extruders have reached a high degree of maturity. In general, a single-screw extruder is divided into three functional zones along the screw: the conveying zone, the compression zone, and the metering zone.

The section following the first thread is referred to as the conveying zone, where the material must remain unplasticized; its primary function is to convey the material. On certain large-diameter extruders, a cooling system is also installed to prevent plasticization and ensure that material melting does not adversely affect the conveying rate.

Once the material has passed through the conveying section, it enters the compression section. At this stage, the volume between the screw and the barrel decreases, while the temperature reaches the plasticization range, causing the material to be compressed. (The initial volume is reduced to one-third of its original size—this is referred to as a screw compression ratio of 3:1.)

Once the material has completed plasticization, it enters the metering section, where it is conveyed in a controlled quantity to the die head for production.

Product Features

It uses Guomao extruder gearboxes, ensuring stable quality and long service life.

An Australian-brand variable-frequency motor.

Electrical control system: Engineers tailor a user-friendly operating control system for extruder customers based on their specific requirements.

Single-screw extruders are simple in design and inexpensive.

Scope of Application

(1) Medical and healthcare textiles: protective suits, wrapping cloths, masks, diapers, feminine hygiene pads, etc.;

(2) Home décor fabrics: wallcoverings, tablecloths, bed sheets, bedspreads, etc.;

(3) Fabric for garment construction: linings, fusible interlinings, wadding, shaped cotton batting, synthetic leather backings, etc.;

(4) Industrial fabrics: filtration materials, non-conductive materials, cement packaging bags, geotextiles, covering fabrics, etc.;

(5) Agricultural fabrics: crop protection fabrics, seedling‑raising fabrics, irrigation fabrics, thermal insulation curtains, etc.;

(6) Others: space cotton, thermal and sound insulation materials, oil-absorbing felt, cigarette filters, tea bags, and more.