Company News_Wuxi Tengyu Environmental

2024-12

The working principle of a plasticator is mainly based on shear and rheological theories. Through strong shearing, stirring, and mixing actions applied to the material, the molecular chains between material particles are broken and reorganized, changing the molecular structure and thus achieving the effect of plasticizing and mixing. The following is a detailed introduction to the working process and the functions of key components of internal mixers and open mills:

2024-12-15

2024-12

Tengyu plastic processing machine

Wuxi Tengyu Environmental Protection Technology Co., Ltd. Tengyu plastic refining machines exhibit many excellent performance characteristics and play an important role in various industries. Taking a small plastic refining machine from Wuxi Tengyu Environmental Protection Technology Co., Ltd. as an example, its two rollers are independently driven by a reduction motor, with precise speed control. The rollers use solid chrome-plated mirror KDB material, ensuring reliable quality and a high surface finish for the products. It is equipped with a protective cover automatic shutdown protection device, which is safe and practical. Electric heating or oil heating can be selected according to process requirements, and a temperature controller can also be selected to control the roller surface temperature and distribution. The distance between the two rollers is manually adjustable. In terms of specifications, the mixing capacity is approximately 0.5kg, the roller size is Ф120mm×L350mm, the roller spacing is adjustable from 1-5mm, the roller speed ratio is 1:1.2, and the roller speed is 0-30r/min (single-frequency speed regulation). The motor uses a Taiwan Chengbang reduction motor 0.75 KW × 1, matched with a Delta VFD-M type frequency converter 0.75KW × 1. The transmission device is a heavy-duty hinge transmission with hard-faced gears, ensuring smooth operation and extremely low noise. Safety devices include a reversing door device, a knee-touch emergency stop reverse (standard), and an emergency stop button. The bearings use Japanese NSK bearings. The overall size is approximately (W×D×H): approximately 1400×450×<1450mm>, the power supply is 3∮, AC380V, the total power is approximately 7 KW, and the weight is approximately 400kg. In terms of application range, Tengyu plastic refining machines are suitable for the design of rubber and plastic formulas, mixing and refining of rubber and plastics, mixing and vulcanization reaction of rubber, extrusion molding of common rubber materials, preparation of rubber and plastic sheets, surface treatment of rubber and plastic sheets, and optimization and control of rubber refining process parameters. The plastic refining machine from Wuxi Tengyu Environmental Protection Technology Co., Ltd., is mainly used in the rubber and rubber products, plastics and plastics, polyolefins, PVC, films, profiles production, and polymer blending, pigments, masterbatches, stabilizers, and stabilizers industries. It can test the changes and comparisons of material properties after mixing, such as color dispersibility, light transmittance, surface gloss, and the strength, plasticity, and hardness after adding auxiliary materials. It is suitable for factories to inspect the physical properties of raw materials from suppliers, compare similar products, and for R&D departments in universities and colleges to develop new products. It can also be used as a reference for mass production in factories. In short, Tengyu plastic refining machines, with their excellent performance and wide applicability, have become a powerful equipment choice for many companies and research institutions in the fields of plastic and rubber processing.

2024-12-15

2024-12

Plastic Processing Machine: A Powerful Assistant

Plasticators are important equipment for mixing and plasticizing plastics, and are widely used in plastic processing and other fields. They are mainly divided into open and closed types. Single-screw plasticators, such as those produced by Wuxi Tengyu Environmental Protection Technology Co., Ltd., mainly consist of a base, a connecting seat, and a table top to form a table-top structure. They are composed of a transmission system, rollers, roller bearings, a frame, safety devices, electric heating devices, and an electrical control cabinet, with a numerically controlled temperature detection system. Its roller diameter is 160mm, the roller working surface length is 320mm, the roller speed ratio is 1:1.35, the roller adjustment distance is 0-5mm, the front roller speed is 11.91m/min, the single batch feeding amount is 1-2kg, the motor specifications are 5.5KW, 960r/min, the external dimensions are 1550×900×1250mm, the heating (electric heating) range is room temperature to 200 degrees, the front and rear rollers have digital display temperature control, the heating power is 3.3KW, and the total weight is 1T. Single-screw plasticators are often used in rubber factories and research unit laboratories for raw rubber plasticizing, mixing of rubber materials and compounding agents, heat treatment of mixed rubber, and pressing of sample tablets, and can also be used for plastic mixing tests. Its structure is relatively simple, easy to manufacture, and operation and maintenance disassembly are convenient, so it is widely used in plastic product enterprises. However, it also has some shortcomings, such as high physical exertion for workers, manual mixing and turning of the mixed material is required in high-temperature environments, and the number of times of manual turning of the plastic sheet significantly affects the quality of the raw material mixing. Closed plasticators, also known as internal mixers, mainly consist of a closed mixing chamber (also known as a plasticizing chamber), with a feeding device at the top and a discharging device at the bottom, and top plugs at both ends. When the top plugs are closed, a closed plasticizing chamber is formed. Inside the plasticizing chamber, there is a pair of counter-rotating rotors. The cross-section of the rotors is pear-shaped, and the longitudinal section is Z-shaped. The rotor speeds are slightly different, and there is a fixed speed ratio between the rotors and between the rotors and the inner wall of the plasticizing chamber. The outer wall of the plasticizing chamber is also equipped with a cooling (heating) jacket for heating and cooling the material. During operation, the upper top plug is first lifted, and the material is added from the feeding port. Then, the upper top plug is pressed down by air pressure to press the material into the mixing chamber, and the material is kept pressed during the operation, applying a certain force to the material. After mixing, the lower top plug is opened, and the material is discharged from the discharge port. The material plasticized by the internal mixer is a viscous lump when discharged, and usually needs to be rolled into sheets by an open mill and cooled before further processing. The advantages of internal mixers are that they have minimal risk of dust and smoke dispersion, high degree of automation, safe operation, good mixing effect, and high production efficiency. Different types of plasticators have different characteristics in structure and function. Enterprises will choose the appropriate type of plasticator according to their own production needs and process requirements to ensure the smooth progress of plastic processing and related production processes and product quality.

2024-12-15

Plastic Processing Machine: A Powerful Assistant

2024-12

Price range of kneading machine

The price of internal mixers varies greatly depending on specifications, ranging from tens of thousands to hundreds of thousands of yuan. The price of small internal mixers varies depending on factors such as brand, model, specifications, and functions. Generally, small internal mixers have a capacity between 5L and 35L, and the price range can vary from a few thousand yuan to hundreds of thousands of yuan. For example, the price of a laboratory open mixing internal mixer is 85,000 yuan when the order quantity is ≥1; the price of a small laboratory closed-type rubber mixing machine (1L, 3L internal mixer) is between 88,000 and 83,000 yuan; the price of a 500g mixing internal mixer, a 1L small mixing internal mixer, and a 2L-3L small experimental internal mixer is between 72,800 and 70,800 yuan; the Jiangsu University experimental internal mixer price mentioned that the price of small laboratory internal mixers ranges from thousands to tens of thousands of yuan. Large internal mixers are relatively more expensive, generally ranging from hundreds of thousands to millions of yuan. The price of large internal mixers is affected by factors such as brand, specifications, materials, and configuration. Large equipment supplied by Wuxi Tengyu Environmental Protection Technology Co., Ltd. enjoys high recognition in the industry, with large-scale procurement from PetroChina, Sinopec, and BYD. The price varies due to different factors. The price of internal mixers on the market is affected by many factors, such as capacity and brand. The price of internal mixers is affected by many factors. In terms of capacity, small internal mixers such as 1L and 3L have smaller capacities and relatively lower prices; large internal mixers have large capacities, higher production capacity and efficiency, and higher prices. In terms of brand, internal mixers from well-known brands and large manufacturers tend to be more expensive, but the quality and service are also more guaranteed. For example, the price of internal mixers provided by Wuxi Tengyu Environmental Protection Technology Co., Ltd. varies depending on the brand, model, and configuration. In addition, the configuration, technology, and market supply and demand relationship of the internal mixer will also affect the price. Modern internal mixers are usually equipped with intelligent operation interfaces and automated control systems. These advanced configurations and technologies will increase equipment costs and thus push up prices. When market demand exceeds supply, prices may rise; conversely, when supply exceeds demand, prices may fall.

2024-12-13

2024-12

Internal Mixer

Two rotors rotate relatively, squeezing and shearing the material for efficient mixing. When the internal mixer is working, the two rotors rotate relatively, clamping and bringing the material into the roll gap, where the material is subjected to the squeezing and shearing action of the rotors. This strong force causes the material to continuously deform, achieving efficient mixing. As mentioned in "Internal Mixer (machinery used for rubber plastication and mixing) - Encyclopedia," the shearing action experienced by the material during mixing in an internal mixer is much greater than that of an open mixer, and the mixing temperature is higher, so the mixing efficiency of the internal mixer is much higher than that of the open mixer. The material undergoes complex movements in the internal mixer to achieve uniform mixing and plasticization. The material undergoes a complex movement process in the internal mixer to achieve uniform mixing and plasticization. On the one hand, the material is subjected to the squeezing, shearing, and stirring action between the elliptical rotor and the wall of the mixing chamber; the kneading and tearing action brought to the material by the relative rotation of the two rotors; the axial kneading and turning action between the rotors. As described in "Exercises and Answers of Plastic Molding Machinery (2)_word document online reading and downloading - Worry-free Document," the internal mixer uses the pressure of the upper top plug, the special shape of the rotor and the special movement changes formed by the mixing chamber wall, as well as the axial force, heating and plasticization generated by the rotor on the material, to promote the uniform mixing and plasticization of the material. On the other hand, the rubber in the internal mixer flows in different regions, realizing the exchange and mixing of the material. For example, in the transition area connecting the two halves of the mixing chamber, the rubber is squeezed by the pressure of the upper top plug on the one hand, and on the other hand, under the action of two rotors rotating at a certain speed ratio, it crosses this connecting transition area and enters behind the right (left) rotor under the action of the left (right) rotor ridge according to the different corresponding positions between the two rotors, realizing the flow and exchange of rubber in the two halves of the mixing chamber. At the same time, reasonable selection of the filling factor plays an important role in the rubber exchange of the two halves of the internal mixer.

2024-12-13

2024-12

All about internal mixers! Learn about the magic of rubber mixing

I. What is an internal mixer? Internal mixers are important equipment for rubber plastication and mixing. The working principle and structure are revealed. An internal mixer is a machine that uses a pair of rotors with specific shapes and relative rotation to intermittently plasticize and mix polymer materials under adjustable temperature and pressure in a closed state. It mainly consists of a mixing chamber, rotors, rotor sealing device, feeding and pressing device, discharging device, transmission device and base. Working principle: When the internal mixer is working, the two rotors rotate relatively, clamping the material from the feeding port and bringing it into the roll gap. The material is squeezed and sheared by the rotors, and after passing through the roll gap, it hits the tip of the lower top plug and is divided into two parts, respectively flowing along the front and rear chamber walls and the gap between the rotor and returning to the upper part of the roll gap. In one cycle around the rotor, the material is subjected to shear and friction everywhere, causing the temperature of the rubber to rise sharply, the viscosity to decrease, and the wettability of the rubber on the surface of the compounding agent to increase, allowing the rubber to fully contact the surface of the compounding agent. The compounding agent lumps pass through the gap between the rotors, the gap between the rotors and the upper and lower top plugs, and the gap in the inner wall of the mixing chamber along with the rubber, and are broken by shearing, surrounded by stretched rubber, and stabilized in a broken state. At the same time, the convex ridges on the rotor cause the rubber to move along the axial direction of the rotor, playing a stirring and mixing role, so that the compounding agent is mixed evenly in the rubber. Closed-type rubber mixing machines, also known as Banbury mixers, play a key role in rubber processing. Since the appearance of the truly meaningful Banbury internal mixer in 1916, the power of the internal mixer has gradually been recognized. It shows a series of excellent characteristics compared to open mixers in the rubber mixing process, such as large mixing capacity, short time, high production efficiency; better overcoming dust flying, reducing the loss of compounding agents, improving product quality and working environment; safe and convenient operation, reducing labor intensity; beneficial to the realization of mechanical and automated operation, etc. Therefore, internal mixers are still typical and important equipment in plastication and mixing, and are constantly developing and improving.

2024-12-13

All about internal mixers! Learn about the magic of rubber mixing

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