How to increase brightness of ABS injection products? Factory Suppliers Manufacturers Quotes

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How to increase brightness of ABS injection products?

How to increase brightness of ABS injection products?


If we want to improve the high quality of plastic injection product, the most important thing is for the injection molds.


1. If the mold cavity is poorly processed, if there are defects such as scratches, micropores, abrasion, roughness, etc., it will inevitably be reflected on the plastic parts, so that the gloss of the plastic parts is poor. In this case, the mold should be carefully processed to make the surface of the cavity more Small roughness, if necessary, can be polished with chrome.


     2. If the surface of the cavity is oily or watery, or the release agent is too much, the surface of the plastic part will be dark and dull. To do this, remove the oil and water stains in time, and use the release agent in a limited amount.


     3. If the plastic part is too small, the demoulding is difficult, or the force is too large when demolding, so that the surface gloss of the plastic part is good. In this case, the draft angle should be increased.


     4. If the mold is poorly exhausted, too much gas stays in the mold, which also leads to poor gloss. To do this, check and correct the mold exhaust system.


     5. If the cross-sectional area of the gate or runner is too small or abruptly changed, the shear force is too large when the melt flows therein, and the turbulent flow is dynamic, resulting in poor gloss. For this, the gate and runner should be appropriately enlarged. Cross-sectional area.


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Another thing is for the molding processing.


1. If the injection speed is too small, the surface of the plastic part is not dense, and the gloss is poor. For this, the injection speed can be appropriately increased.


     2. For thick-walled plastic parts, if the cooling is insufficient, the surface will be hairy and the gloss will be dark. For this, the cooling system should be improved.


     3. If the holding pressure is insufficient, the holding time is too short, so that the density of the plastic parts is insufficient and the gloss is poor. In this case, the holding pressure and the holding time should be increased.


     5. If the melt temperature is too low, the fluidity is poor, which may lead to poor gloss. For this, the melt temperature should be appropriately increased.


     6. For crystalline resins, such as PE, PP, POM, etc., if the cooling is not uniform, the gloss will be poor. For this, the cooling system should be improved to make it evenly cooled.


     7. If the injection speed is too large and the gate cross-sectional area is too small, the vicinity of the cast product will be dark and the gloss is poor. For this, the injection speed and the gate cross-sectional area can be appropriately reduced.

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