Soft–hard composite plastic extruder

Model Sj-30 Sj-65 Sj-80 Sj-90 Sj-105 Screw Diameter (mm) 30 65 80 90 105 Length-to-Diameter Ratio 25:1 25:1 25/30:1 25/30:1 25/30:1 Motor Power (kW) 2.2 7.5 11–15 15–18.5 22 Machine Center Height (mm) 850 850 850 1000 1100 Screw Speed (r/min) 60 60 60 60 60 Output (kg/h) 5–8 40–80 80–150 150–250 220–330 Applications and Features: The SJ series single-screw extruders consist primarily of a barrel and screw assembly, a power transmission system, heating and cooling mechanisms, and electrical control systems. They are mainly used for processing plastics such as PVC, PE, PP, ABS, and TPE. When equipped with auxiliary equipment, they can directly produce plastic products like profiles, sheets, pipes, and pellets through plasticization and extrusion molding. This equipment features excellent design, high output, superior plasticization, low energy consumption, and hard-toothed gear transmission. It also boasts low noise, smooth operation, strong load-bearing capacity, and long service life. Plastic Extruders: In terms of functionality, high efficiency is reflected in increased production output, reduced energy consumption, and lower manufacturing costs. Plastic extruders are no longer limited to the extrusion molding and compounding of polymeric materials; their applications have expanded into fields such as food, feed, electrodes, building materials, packaging, pulp, ceramics, and more. Extrusion Principle: The extrusion process typically involves melting plastic at temperatures around 200°C, after which the molten material is forced through a die to form the desired shape. This method requires a deep understanding of plastic properties and extensive experience in mold design, making it a demanding forming technique. Extrusion molding entails continuously feeding heated and pressurized material through a die to achieve a specific shape. Also known as "extrusion," this method offers significant advantages over other forming techniques, including higher efficiency and lower unit costs. Extrusion is primarily used for thermoplastic materials but can also be applied to certain thermosetting plastics. The resulting products are continuous profiles, such as tubes, rods, filaments, sheets, films, and insulation layers for wires and cables. Additionally, extrusion can be employed for blending, plasticizing and pelletizing, coloring, and incorporating additives into plastics. Products formed via extrusion are often referred to as "profiles." Because their cross-sectional shapes are frequently irregular, these products are also called "special-shaped profiles."

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Classification:

Plastic extruder

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Soft–hard composite plastic extruder

Model number	SJ-30	SJ-65	SJ-80	SJ-90	SJ-105
Screw diameter mm	30	65	80	90	105
Length-to-diameter ratio	25:1	25:1	25/30: 1	25/30: 1	25/30: 1
Motor power (kW)	2.2	7.5	11-15	15-18.5	22
Machine center height mm	850	850	850	1000	1100
Screw rotation speed r/min	60	60	60	60	60
Production rate kg/h	5-8	40-80	80-150	150-250	220-330

Applications and Features:

The SJ series single-screw extruder primarily consists of a barrel and screw, a drive system, heating and cooling systems, and electrical control components.

It is primarily used for processing plastics such as PVC, PE, PP, ABS, and TPE. When equipped with auxiliary equipment, it can directly produce plastic products—including profiles, sheets, pipes, and pellets—through plasticization and extrusion molding.

This equipment features a well‑designed structure, high production capacity, excellent plasticization, and low energy consumption, and it employs hardened‑surface gear transmission. It also boasts low noise, smooth operation, high load‑carrying capacity, and a long service life.

Plastic extruder:

In terms of functionality, high efficiency is primarily reflected in high output and low energy consumption, thereby reducing manufacturing costs. Screw-type plastic extruders are no longer limited to the extrusion molding and compounding of polymeric materials; their applications have expanded to include food, feed, electrodes, construction materials, packaging, and paper.

In fields such as pulp and ceramics.

Molding principle:

The extrusion process in a plastic extruder typically involves melting the plastic at high temperatures of around 200°C, after which the molten material is forced through a die to take on the desired shape. Extrusion molding demands a thorough understanding of plastic properties and extensive experience in mold design, making it a relatively demanding forming method.

Law.

Extrusion molding is a process in which materials are heated and pressurized within an extruder, allowing them to flow continuously through a die to form a desired shape; it is also known as “extrusion.” Compared with other forming methods, it offers the advantages of high efficiency and low unit cost.

Extrusion is primarily used for molding thermoplastic plastics, but it can also be applied to certain thermosetting plastics. Extruded products are all continuous profiles, such as tubes, rods, filaments, sheets, films, and insulation coatings for wires and cables. In addition, it can be employed for plastic blending, plasticizing and pelletizing, and coloring.

Color, blending, and so on.

The extruded product is referred to as a “profile”; because its cross-sectional shape is often irregular, it is also known as an “extruded profile.”