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(Ⅰ) How to deal with flow marks on injection-molded parts?
2024-09-27
(1) P: Poor flow of the molten material leads to the formation of concentric flow marks resembling growth rings on the surface of injection-molded parts, centered around the gate. When low-temperature, high-viscosity molten material with poor flow performance is injected into the cavity in a semi-cured, fluctuating state through the injection port and runner, the material flows along the cavity su...
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(Ⅱ) How to deal with floating fibers on injection-molded parts?
2024-09-27
Mold temperature too low Cause: If the mold temperature is too low, the melt cools too quickly during flow, causing the glass fibers to not be fully encapsulated by the base resin and float to the surface. Solution: Increase the mold temperature appropriately to ensure the melt has sufficient fluidity to uniformly coat the glass fibers. Regularly check the mold temperature control system to ensure...
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Tsinghua University: Study on the Comprehensive Performance and Influencing Factors of Long Glass Fiber Reinforced PA66 Composites
2024-10-22
Introduction Fiber-reinforced polymer composites, due to their lightweight and high-strength characteristics, have found applications in many fields, especially in the transportation sector, where they can effectively reduce vehicle weight and better achieve energy savings and emission reductions. Among them, long glass fiber (LGF) reinforced polyamide materials (PA/LGF) are widely used in the man...
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Long Carbon Fiber vs. Short Carbon Fiber in 3D Printing
2024-11-11
In 3D printing, both long carbon fiber and short carbon fiber are used as reinforcement materials to enhance the strength and durability of printed parts. Here’s an overview of their differences: 1. Long Carbon Fiber Long carbon fibers are continuous strands that are incorporated into the printing material. This type of fiber provides superior strength, stiffness, and structural integrity to the p...
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How to increase the gloss of ABS injection-molded products?
2024-11-11
Injection Mold 1. If the mold cavity is poorly machined, with defects such as scratches, micro-pores, wear, or rough surfaces, it will affect the gloss of the plastic part. To address this, ensure precise machining of the mold to achieve a lower surface roughness for the cavity; if necessary, polish and chrome-plate the cavity. 2. If the cavity surface has oil stains, watermarks, or excessive mold...
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