The future development trend of PC lampshades in plastic extrusion molds

Sep 02, 2024

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1, High speed and high-yield extrusion molds can enable investors to achieve greater output and high returns with lower investment. However, the high-speed rotation of extrusion die screws also brings a series of difficulties that need to be overcome: for example, reducing the residence time of materials in the screw can lead to uneven mixing and plasticization of materials, excessive shearing of materials may cause rapid heating and thermal decomposition of materials, difficulty in controlling extrusion stability can cause geometric size fluctuations of extruded materials, and the accuracy of related auxiliary devices and control systems must be improved. The wear of screws and barrels intensifies, requiring the use of high and ultra high wear-resistant materials. How to improve the service life of reducers and bearings under high-speed operation needs to be solved.
2, The high efficiency and versatility of plastic extrusion molds are mainly reflected in high output, low energy consumption, and low manufacturing costs. In terms of functionality, screw extrusion molds are no longer only used for extrusion molding and mixing processing of polymer materials, but their applications have also expanded to fields such as food, feed, electrodes, explosives, building materials, packaging, pulp, ceramics, etc. In addition, the “one-step extrusion process” that combines the mixing granulation and extrusion molding processes is also worthy of attention.
3, The large-scale and precision implementation of extrusion molding equipment can reduce production costs, which is more advantageous in large twin-screw granulation units, blown film units, pipe extrusion units, and other aspects. The major technical equipment required for national key construction services and one of the three key equipment supporting large-scale ethylene projects, the large-scale extrusion granulation unit, have long relied on imports. Therefore, it is necessary to accelerate the localization process to meet the development needs of the petrochemical industry. Precision can increase the gold content of products, such as multi-layer co extruded composite films, which require precision extrusion. As an important means to achieve precision extrusion, the development and research of melt gear pumps must be intensified.