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2025-06-04 Plastic Sheet Extruder Melt Pump Composition Mechanism and Working Principle
Sheet extrusion melt pump is a key equipment in plastic processing industry, mainly used in sheet extrusion line, its core function is to realize stable and efficient extrusion process by precisely controlling the flow and pressure of high temperature and high viscosity polymer melt. I. Structural Composition Sheet extrusion melt pump usually consists of the following core components: Pump body: made of high temperature tool steel or alloy steel to ensure stability and corrosion resistance under high temperature and high pressure environment. Gear set: active gear and driven gear precision mes
2025-05-28 plastic film extrusion melt pump
The plastic film extrusion melt pump is a critical piece of equipment in the production of plastic films. Operating on the principle of positive displacement conveyance, it achieves stable pressurization, metering, and conveyance of high-temperature melts, offering significant advantages in enhancing film quality, production efficiency, and energy conservation. Below is an analysis focusing on its structure, functions, applications, and key considerations for selection and usage: I. Structure and Working Principle The plastic film extrusion melt pump typically consists of components such as a
2025-05-27 The critical role of melt pumps in polymer extrusion molding
Melt pumps are a kind of power equipment used for conveying high temperature and high viscosity polymer melts, and play a key role in the extrusion molding process of plastics, resins, rubbers, and chemical fiber products. The following is an overview of its functions and applications: In terms of function, melt pump is mainly used for conveying, pressurizing and metering of high temperature and high viscosity polymer melt. It can pressurize and stabilize the high temperature plastic melt from the extruder, and then the flow rate is steadily fed into the extruder head, and its ability to stabi
2025-05-22 Plastic Film Extrusion Melt Pumps Application Scope
Plastic film extrusion melt pumps (gear pumps) play a key role in the film production process, with applications covering a wide range of material types, production processes and high-end film products. Below is a detailed categorization: /p 1. Divided by material type Material type Typical application Melt pump role Polyolefin BOPP/CPP/PE films, wrap-around films Stabilize high-pressure extrusion, reduce thickness fluctuation (CV value 1%), improve optical properties Polyester PET film (packaging, electronic base film) Precise control of high viscosity melt to avoid degradation and safeguard
2025-05-19 Core benefits of melt pumps in precision extrusion of plastic sheets
Plastic sheet precision extrusion process, melt pump with its unique technical advantages and role of the mechanism, become the key equipment to improve product quality and production efficiency. Its core advantages and role is reflected in the following aspects: 1, stabilize the melt pressure and flow to ensure precision extrusion Pressure fluctuation suppression: melt pump through the gear meshing volumetric conveying principle, can buffer the extruder screw speed fluctuations, temperature changes and other factors caused by pressure pulsations, to ensure that the melt to a constant pressure
2025-05-15 The main reasons for melt pump leakage
The main causes of melt pump leakage include worn or damaged seals, improper installation, excessive pressure, influence of melt properties, pump body wear and thermal deformation. Specifically: 1, seal wear or damage: melt pumps commonly used sealing forms such as mechanical seals and packing seals in long-term operation will be worn due to friction, resulting in seal failure. In addition, seals in high temperature, highly corrosive environment will aging, accelerate the leakage. 2, improper installation: the installation process if the seals are not installed in place, such as static and dyn
2025-05-12 Pipe extrusion melt pumps: the secret of development trend
I. Technology upgrading and performance improvement High-pressure: With the continuous improvement of the pressure requirements of the extrusion process, pipe extrusion melt pumps are developing in the direction of high pressure. This requires the development of new structures that can withstand higher working pressures, such as gear pumps with multiple gears, especially balanced composite gear pumps, to meet the systems demand for high pressure. Low flow pulsation: flow pulsation will cause pressure pulsation, resulting in system vibration and noise, affecting the quality of extrusion. Theref
2025-05-08 Melt Pump Gear Forms Competition: Spur Gear, Helical Gear, Herringbone Gear Advantages & Disadvantage
Melt pumps in the spur gear, helical gear, herringbone gear in the structure and performance characteristics, the following are their respective advantages and disadvantages: First, straight gear Advantages: simple tooth shape, design and processing technology is mature, relatively low manufacturing costs; easy to assemble, relatively low requirements for the installation accuracy; there is no axial force at work, the bearing load is relatively simple, do not need to set up additional axial force balancing device, can simplify the structure of the pump. Disadvantages: in the meshing process, t
2025-04-28 The main reasons for melt pump leakage
The main causes of melt pump leakage include worn or damaged seals, improper installation, excessive pressure, influence of melt properties, pump body wear and thermal deformation. Specifically: 1, seal wear or damage: melt pumps commonly used sealing forms such as mechanical seals and packing seals in long-term operation will be worn due to friction, resulting in seal failure. In addition, seals in high temperature, highly corrosive environment will be aging, accelerating the leakage. 2, improper installation: the installation process if the seals are not installed in place, such as static an
2025-04-25 Specific applications of melt pumps in silicone extrusion
Stabilizing the flow and pressure of silicone melt is the basis of high quality production; high temperature and wear-resistant material casting equipment lasting and reliable, melt pumps with precise control and efficient sharing, enhance the uniformity of extrusion, reduce the failure rate, and become an indispensable core of the silicone products production line. Stabilizing melt flow and pressure: The melt pump can stabilize and accurately control the flow and pressure of the silicone melt to ensure the stability and continuity of the extrusion process, which is the basis for the high-qual
