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2025-01-02 What are the common fault causes of plastic bottle extrusion melt pumps?
Plastic bottle extrusion melt pumps play a crucial role in the plastic extrusion molding process, but they may also experience various faults. Below are some common fault causes and corresponding solutions: 1. Non-rotating Melt Pump Fault Cause: The shaft and shaft sleeve are seized. Solution: Disassemble the melt pump and send it back to the factory for repair. 2. Material Leakage Fault Causes: Leakage at the seal. Leakage at the cover plate. Solutions: For seal leakage, try passing cooling water or air, and replace the packing or seals. For cover plate leakage, after heating the melt pump, r
2024-12-31 What are the applications of melt pumps in the rubber industry?
The applications of melt pumps in the rubber industry are extensive, mainly reflected in the following aspects: I. Transportation and Pressurization of Rubber Melts Melt pumps are primarily used for the transportation and pressurization of rubber melts. During the rubber production process, melt pumps can pressurize and stabilize the high-temperature rubber melts from the extruder before stably delivering them to the extruder die. This process ensures stable pressure and precise flow rate of the rubber melts during transportation, avoiding common issues such as pressure fluctuations and uneven
2024-12-27 Application and Characteristics of Rubber Extrusion Melt Pumps
Rubber extrusion melt pumps are crucial equipment in rubber extrusion systems, serving functions such as melt conveying, pressure boosting, pressure stabilization, and metering. The following are the specific applications and characteristics: Applications Rubber melt pumps are widely used in the extrusion molding fields of plastics, resins, rubber, and chemical fiber products, including but not limited to the production of granulates, films, pipes, sheets, plates, artificial fibers, optical fibers, and medical plastic catheters. In the manufacturing of automotive rubber components, such as tir
2024-12-23 What is the role of the metering pump in a PP (Polypropylene) fiber drawing extrusion line?
In a PP fiber drawing extrusion line, the metering pump plays a vital role. Its main functions can be summarized as follows: Precise Control of Melt Flow Rate The metering melt gear pump can control the flow rate of PP melt with high precision. During the fiber drawing process, the melt needs to pass through the spinneret with a stable and accurate flow rate to ensure that the formed fiber has a uniform diameter. By precisely adjusting its output flow rate, the metering pump can accommodate the production requirements for different fiber specifications. For example, when producing high-end fib
2024-12-17 What is the working pressure of the melt pump in a sheet extruder?
The working pressure of the melt pump in a sheet extruder is a range value, with a normal working pressure generally between 5-20 MPa. However, melt pumps of different models and specifications may vary. Some melt pumps may have a relatively low inlet pressure, typically around 3-5 MPa, while the outlet pressure may be higher, sometimes reaching 40 MPa or even higher. However, the large pressure difference usually does not exceed a certain limit, such as 25 MPa. In addition, it should be noted that the melt pressure in the extruder is also affected by various factors such as material character
2024-12-14 Application Areas of PET, PA, PVC Plastic Film Extrusion Melt Pumps
PET, PA, and PVC plastic film extrusion melt pumps have a wide range of applications in the plastics processing industry. Below is a detailed summary of their application areas: I. Plastic Film Manufacturing PET Film: Melt pumps play a crucial role in the production of PET film. By precisely controlling the flow rate and pressure of the melt, they ensure that the film has a uniform thickness and a smooth surface, meeting the demand for high-quality PET film in packaging, electronics, optics, and other fields. PA Film: For the production of PA (nylon) film, melt pumps can also stably convey the
2024-12-13 The sealing methods for masterbatch granulating melt gear pumps
The sealing methods for masterbatch granulating melt gear pumps are crucial, as they directly impact the pumps performance, reliability, and service life. Below are the common sealing methods for masterbatch granulating melt gear pumps: I. Packing Seal Overview: Packing seal is a traditional sealing method that prevents melt leakage through packing materials (such as PTFE, flexible graphite braided materials, etc.). Characteristics: It features a simple structure, low cost, and easy installation and disassembly, making it a cost-effective sealing method. However, due to the high pressure insid
2024-11-25 What other materials can the PET filament extrusion melt pump be used for?
The PET filament extrusion melt pump is primarily used for melt conveyance in the production process of PET plastics. Its functions are mainly reflected in conveying PET raw materials, controlling the production process, improving product quality, and reducing production costs. Besides PET materials, this pump can also be used for the following types of materials: Polymer materials: The PET filament extrusion melt pump can be used to convey various polymer materials such as PA (polyamide), PB (polybutene), PC (polycarbonate), PE (polyethylene), PS (polystyrene), HIPS (high-impact polystyrene),
2024-11-22 Attentions for the Use of Resin reactor kettle Booster Gear Pump
The following are the attentions that need to be paid when using a resin reactor kettle booster gear pump : I. Preparation Before Startup Check the Process Flow: Ensure that the process flow is correct to avoid equipment damage or safety accidents due to misoperation. Clear Obstacles: Check if there are any obstacles around the gear pump that may hinder its operation, and ensure there is sufficient space around the equipment for safe operation. Tighten Bolts: Check if the bolts of the coupling protective cover and the foundation feet are tightened to prevent vibration or noise due to loosening
2024-11-16 What are the specific application cases of melt pumps in the chemical fiber industry?
The specific application cases of melt pumps in the chemical fiber industry are extensive and diverse. Below are some typical examples: Polyester Fiber Production In the production process of polyester fibers, melt pumps play a crucial role. After polyester raw materials are melted at high temperatures, they are stably and continuously conveyed to the spinning die through melt pumps. Melt pumps can precisely control the flow rate and pressure of the melt, ensuring the stability and continuity of the spinning process, thereby producing high-quality polyester fibers. Nylon Fiber Production The p
