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An SJ 30 extruder is a molted plastic-manufacturing machine. It is available in several types, including the following:
Single-screw Extruder:
The backbone of extrusion technology is the single-screw extruder, which is made of the feeding zone, the melting zone, the mixing and pumping section, and the discharging zone. It usually handles homogeneous material. During operation, the screw rotates, pushing and compressing the material, causing it to heat, melt, mix, and ultimately, output the melted plastic.
Co-rotating Double-screw Extruder:
The structure of the co-rotating double-screw extruder is similar to that of the paralleling double-screw extruder. However, the two screws rotate in the same direction. It has strong conveying capacity and good distributive mixing ability, which is especially suitable for processing materials with additives like flame retardants, color masterbatch, etc.
Conical Double Screw Extruder:
The conical double-screw extruder is a screw-shaped device that has two helical grooves forming a cone-like structure. Such a structure allows the machine to move and compress materials vertically. The machine can perform various tasks like heating, cooling, and mixing efficiently. The machine is used primarily for the production of PVC pipes and plate sheets.
Strand Cutting Extruder:
A strand cutting extruder is a device used to produce plastic strands or filaments from molten plastic. It is commonly used in polymer processing and manufacturing to extrude materials that solidify into strands. The strands can then be cut into pellets or feedstock for further processing.
Direct Filtration Extruder:
A direct-blow extrusion machine operates by forcing molten plastic through a die to create a hollow form or section. The die cools the plastic to harden it, and then the product is cut to length. This method provides a cost-effective method of producing plastic parts with a known quantity in the material.
The motor power of the SJ30 extruder can be 22kw or 30kw, and its current is 45.1A at 30kw. The torque of the machine reaches 40.4Nm. The output of plastic material volume will be 120-200kg/hr. This model has a double shift gearbox that helps to enhance the torque. Other prominent features are the barrel and screw design. The rough helical groove pattern allows more holding capacity and better mixing. Other designs have alternating normal grooves and sections with horizontal striations, further improving plasticization and dispersion. Another technologic design is the long-length ratio of 28:1. It helps to develop melt temperature and homogeneity.
Generally, the SJ 30 plastic extruder does not require substantial maintenance. However, operators must lubricate grease fittings regularly. Check the drums and blades for any wear and tear frequently. It is better to remove corrosion from barrels and torches instead of cleaning them with chemicals. When there is corrosion, there is no need to clean the extrusion line, which is better to maintain the quality of the product and the equipment. When not in use, cover the apparatus properly to protect it from dust or debris. Before starting the machine, remove the cover. It is also essential to keep the area around the equipment clean and free from flammable materials.
The SJ 30 plastic extruder has many uses in the food industry. Here are some of them:
Making snacks and other food products
The sj 30 food extruder can create different types of food like cereal-based products, pet food, aquatic food, puffed snacks, pasta, protein texturates, and other complex food products. The extruder combines various ingredients by cooking and forcing them through a shaped die. When the dough comes out of the die, it puffs and gets hardened.
Forming meat substitutes
SJ 30 extruders can be used to produce meat substitutes such as tofu, gluten, pea protein, and other textured protein fibers. The extruder is often used because it can create a fiber structure that looks like the texture of real meat. This will give the product a sufficient chewy and meaty bite.
Creating flavored and fortified pellets
An extruder can also be used to produce fortified and flavored pellets. These pellets are usually made for fish, birds, and other pets. The extruder mixes the raw materials together, heats them, and then forms them into shapes through a die. After these processes, the pellets are dried and packaged.
Producing modified food ingredients
The extruder can also produce modified food ingredients such as starch derivatives, protein hydrolysates, and emulsions. These modified ingredients will become useful for research, food processing, and restaurant applications.
Several factors should be taken into account when choosing the right SJ 30 plastic extruder for the business.
Production Demand:
The daily production demand should be the starting point for selecting the proper SJ 30 plastic extruder. Since the feeding capacity of the extruder is closely related to its output, buyers can calculate the required quantity by running some numbers based on the planned annual sales of the products and the sales volume.
Flexible Configuration:
Apart from the typical die and auxiliary machine that comes with the extruder, buyers can also add post-processing techniques such as 3D printing, hot stamping, laser marking, shrink film packaging, and others to customize different product lines. For example, blending and compounding technology can help produce plastic composite materials, while foaming technology can help manufacture lightweight foam plastic products. Additionally, post-processing techniques like laser marking and shrink film packaging can enhance product quality and packaging for sale. By combining the extruder with other specialized machines, it is possible to set up a comprehensive production line catering to a distinct market demand.
Quality Control:
Users can tell a lot about an extruder's quality by looking at the components it employs. For example, a well-known, reputable brand usually manufactures the motor, gearbox, and temperature control system. Investing in a high-quality, small, reliable, and efficient motor can save energy costs since the motor is primarily responsible for driving the feeding barrel and auger.
Servicing and Maintenance:
Since the plastic extruder is a large and high-precision piece of machinery, it may occasionally require maintenance and repairs. Therefore, a local, professional, and experienced after-sales service team can promptly respond to urgent demands and provide expert repairs and servicing. Communication is also vital, as the customer service representative will need to understand what parts and equipment the business is running to provide prompt, effective service.
Q1: What materials can be processed with a plastic extruder?
A1: The SJ extruder can process a wide range of plastic materials. The most common are PVC, HDPE, LDPE, PP, ABS, PS, and PET.
Q2: How does a plastic extruder work?
A2: A plastic extruder operates by heating and melting plastic resin. Then, the melted plastic is forced through a die to create a specific shape. After cooling and solidification, the extruded product is cut to the desired length.
Q3: What are the main components of a plastic extruder?
A3: The main components of a plastic extruder include the hopper, heating and cooling zones, the screw, the die, and the take-up or cutting mechanism.
Q4: Can a plastic extruder produce colored or specialized plastic materials?
A4: Yes, plastic extruders can process colored or specialized materials by adding pigmentation or additives during the feeding stage.
Q5: What are some common applications of extruded plastic products?
A5: Some common applications of extruded plastic products include packaging, automotive parts, construction materials, medical devices, and consumer goods.
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