1, lack of glue
(1) injection molding machine processing, if the multi-cavity in a lack of plastic, may be due to the size of the water into the different, or the cavity of the flow channel length difference.
(2) mold exhaust can also cause poor glue, but often accompanied by charred.
2, shrink
(1) product shrinkage caused by uneven wall thickness.
(2) product wall thickness uniform shrinkage.
Phenomenon: the surface of the product wave phenomenon reasons:
(1) may be the injection molding machine CUSHIONVOLUME no or insufficient.
(2) may be counter-current to prevent the valve action is poor.
3, black bars
Phenomenon: injection molding machine processing process, the product from the water position from the black strip out.
4, charred
Recommendation: Exhaust on the mold, or change the water level to the exhaust.
5, the product surface gloss bad, was cloudy.
6, silver stripes: in the direction of the flow of compounds appear a color line.
7, flow marks: the product into the mouth as the center of the formation of wavy.
8, welding marks:
In the process of injection molding machine, the fusion line produced at the hole of the product.
(1) It is difficult to completely eliminate weld marks.
(2) the number of water points also affect the number of weld marks.
(3) Other ways to consider improvement:
A: change the water method.
B: increase the exhaust equipment.
C: in the place where the weld marks appear bone.
9, jet stream: in the water part of the formation of earthworm-like lines.