Soft–hard composite extruder

Model SJ-30 SJ-65 SJ-80 SJ-90 SJ-105 Screw Diameter (mm) 30 65 80 90 105 L/D 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 mainly consist of a barrel and screw, a power transmission system, heating and cooling mechanisms, and electrical control components. They are primarily used for processing plastics such as PVC, PE, PP, ABS, and TPE. When equipped with various auxiliary machines, they can directly produce plastic products like profiles, sheets, pipes, and pellets through plasticization and extrusion molding. This equipment features advanced design, high output, excellent 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, efficiency is reflected in high productivity, low energy consumption, and reduced manufacturing costs. Screw-type plastic extruders are no longer limited to 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. Molding Principle: The extrusion process in plastic extruders generally involves melting the plastic at temperatures around 200°C. The molten plastic then passes through a die to form the desired shape. Extrusion molding requires a deep understanding of plastic properties and extensive experience in mold design, making it a highly technical forming method. Extrusion molding is a technique where materials are heated and pressurized within an extruder, allowing them to flow continuously through a die to form specific shapes. This method is also known as "extrusion." Compared with other molding techniques, it offers advantages such as high efficiency and lower unit costs. Extrusion is mainly used for shaping thermoplastic materials, though it can also be applied to certain thermosetting plastics. The resulting products are typically continuous profiles, including tubes, rods, filaments, sheets, films, and coating layers for wires and cables. Additionally, extrusion can be employed for blending, plasticizing and pelletizing, coloring, and mixing plastics. Products formed by extrusion are often referred to as "profiles," and because their cross-sectional shapes are usually irregular, they are also called "special-shaped profiles."

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Soft–hard composite 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 rotational 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 units, and electrical control components.

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

This equipment features an advanced design, high production capacity, excellent plasticization, and low energy consumption, and it employs hardened‑tooth‑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, low energy consumption, and reduced manufacturing costs. 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, construction materials, packaging, pulp, and ceramics.

Molding principle:

The extrusion process used in plastic extruders 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 deep understanding of plastic properties and extensive experience in mold design, making it a highly technical forming method.

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 continuous profiles, such as tubes, rods, filaments, sheets, films, and insulation coatings for wires and cables. In addition, extrusion is employed for plastic compounding, plasticizing and pelletizing, coloration, and blending.

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.”