Injection Molding
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Product partially not filled
Fenómeno del problema
The product is partially not filled, the edges are incomplete, especially obvious in thin-walled areas, the surface at the unfilled area is rough and without gloss
Análisis de la causa
Injection pressure insufficient or injection speed too slow
Barrel temperature low (below the lower limit of 170-230°C), poor fluidity
Poor mold venting, large cavity pressure loss
Gate too small or runner too long, large resistance
Product wall thickness too thin, melt difficult to reach the end
Solución
Increase injection pressure and injection speed
Appropriately increase the barrel temperature to the 170-230°C range
Improve mold venting
Increase gate and runner dimensions
Appropriately increase wall thickness or increase the number of gates
Conclusión clave
Short shot needs to be addressed from pressure, temperature, venting, and gate
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