Technical document

What are the core advantages of precision injection molding

2025-07-10 09:29:11 precision injection molding
In the new era where manufacturing is moving towards intelligence and refinement, precision injection molding achieves high-precision molding of plastic products through high-precision molds, advanced equipment, and precise process control. It is widely used in electronics, medical care, aerospace and other fields, providing support for technological upgrading in various industries.
I. High Precision and Dimensional Stability
  1. Minimal dimensional tolerance control: Dimensional tolerances can be controlled within ±0.005-±0.01mm, and some can reach the micron level. For electronic connectors in 5G communication equipment, precise pin spacing is required to ensure high-speed signal transmission.

  1. High shape and position accuracy: It is good at forming complex structures such as thin walls and fine ribs, with strong product consistency. Precision components in aerospace engine fuel injection systems rely on it to ensure injection accuracy.

  1. Case evidence: Deviations in the size of medical precision catheter connectors may cause serious medical accidents, highlighting the importance of its precision.

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II. Excellent Surface Quality
  1. High-gloss surface: After fine processing of the mold, the surface roughness of the product can reach below Ra0.8, and some show a mirror effect. In the manufacture of optical lenses, it can meet the requirements of light refraction and reflection.

  1. Low defect rate: Reduce defects such as weld lines through precise process control. Cosmetic packaging parts do not require secondary processing, enhancing competitiveness.

III. Wide Material Adaptability and Performance Optimization
  1. Applicable to various engineering plastics: It can process various materials such as PC and PEEK. Parts around new energy vehicle engines made of PEEK are molded by it to meet high temperature resistance and other needs.

  1. Full exertion of material performance: Reduce uneven molecular orientation and improve product impact resistance. Electronic device casings made of PC can effectively protect internal components.

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IV. Production Efficiency and Cost Advantages
  1. Highly automated production: In the context of Industry 4.0, full-process operation is realized with automated equipment, and the single molding time can be within 30 seconds. In the production of 3C product parts, it can quickly meet market demand.

  1. Good batch consistency: The mold life is more than one million times, and the scrap rate is less than 1%. In the mass production of mobile phone buttons, rework and scrap are reduced.

  1. Reduce post-processing procedures: One-time molding meets the requirements and shortens the delivery cycle. Smart home product casings can be directly assembled, reducing costs.

V. Ability to Form Complex Structures
  1. Multi-slider and stack mold technology: Can form complex parts with side holes and threads. In the production of connector terminals, efficiency and precision are improved.

  1. Micro-injection molding technology: Realizes the replication of nano-scale surface structures. In the manufacture of MEMS sensor components, it meets high-precision requirements.

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VI. Conclusion
The core advantages of precision injection molding lie in precision, surface quality, material adaptability, efficiency, cost, and complex structure forming. In emerging industries such as 5G and new energy, it has become a key technology in high-end manufacturing, helping the manufacturing industry develop in the direction of intelligence.

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