Ring gate, also called the outer circular ring gate, and the ring gate is similar, just outside the gate is arranged in the cavity, is arranged around the cavity of the gate, the gate location coincided with the corresponding disc gate. Ring gate can also be seen as a variation of the rectangular gate. In the design of rectangular gate can be used to treat, may refer to the disk gate size selection.
  1.Advantages of ring gate. The circumferential melt along the gate evenly into the cavity, stable discharge the gas, so the exhaust effect is good. The melt has roughly the same velocity over the entire circumference, no corrugation and weld line. The melt flow smoothly in the cavity, so the inner stress of the products of small, variant is also small.
  2.ring gate defects. Cross sectional area of ring gate of large, removal is difficult, and left obvious marks on the side. Because the gate residue more, and in the outer surface, to make their appearance, often turning and punching method to remove
  3.Application of ring gate. Ring gate used for small, multi cavity mold, suitable for forming the perimeter wall long, cylindrical thick thin plastic parts.