Double-shot injection molding method for sundries box of automobile auxiliary console
A sub-instrument panel, two-color injection molding technology, used in household components, household appliances, other household appliances, etc., can solve the problem of easy falling off of the cushion pad, and achieve the effect of good bonding surface, good appearance and easy realization.
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Embodiment 1
[0016] a. Drying of raw materials
[0017] Dry the hard rubber material PC / ABS at 80°C for 3 hours, and dry the soft rubber material TPU at 80°C for 2 hours; b. Preheat the mold
[0018] Install the injection mold and preheat the two-color injection molding machine to make the mold temperature reach 60°C;
[0019] c. Injection molding
[0020] Hard rubber injection molding is carried out first, the storage cylinder temperature of hard rubber PC / ABS is 180°C, the temperature of hot runner is 250°C, the injection speed of hard rubber is 50L / min, the holding pressure is 60Mpa, and the injection molding time is 12s, and the hard rubber injection molding is completed , after cooling the hard rubber PC / ABS storage cylinder for 10s, replenish the hard rubber raw materials to the filling position before injection molding, the amount of hard rubber replenishment is 70g, and after the mold is cooled for 30s, perform soft rubber injection molding; the temperature of the soft rubber TPU ...
Embodiment 2
[0022] a. Drying of raw materials
[0023] Dry the hard rubber material PC / ABS at 100°C for 3 hours, and dry the soft rubber material TPU at 100°C for 1 hour;
[0024] b. Mold preheating
[0025] Install the injection mold and preheat the two-color injection molding machine to make the mold temperature reach 60°C;
[0026] c. Injection molding
[0027] Hard rubber injection molding is carried out first, the storage cylinder temperature of hard rubber PC / ABS is 250°C, the temperature of hot runner is 280°C, the injection speed of hard rubber is 160L / min, the holding pressure is 90Mpa, and the injection time is 10s, and the hard rubber injection molding is completed , the storage cylinder of hard rubber PC / ABS is cooled for 10s, and then the hard rubber raw material is added to the filling position before injection molding. The amount of hard rubber supplemented is 80g. After the mold is cooled for 30s, soft rubber injection is performed; the temperature of the storage cylinde...
Embodiment 3
[0029] a. Drying of raw materials
[0030] Dry the hard rubber material PC / ABS at 90°C for 3.5 hours, and dry the soft rubber material TPU at 90°C for 1.5 hours; b. Preheat the mold
[0031] Install the injection mold and preheat the two-color injection molding machine to make the mold temperature reach 60°C;
[0032] c. Injection molding
[0033] Hard rubber injection molding is carried out first, the storage cylinder temperature of hard rubber PC / ABS is 240°C, the temperature of hot runner is 270°C, the injection speed of hard rubber is 100L / min, the holding pressure is 80Mpa, and the injection molding time is 11s, and the hard rubber injection molding is completed , after cooling the hard rubber PC / ABS storage cylinder for 10s, replenish the hard rubber raw materials to the filling position before injection molding, the supplementary amount of hard rubber is 75g, and after the mold is cooled for 30s, perform soft rubber injection molding; the temperature of the soft rubber...
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