Today we are going to discuss several venting methods for the plastic injection mold:
1. Gate venting;
2. Parting surface venting;
3. Inserts and inserts pin venting;
For inserts joint cavities or cores, they can be vented by their split gaps.
4. Ejector pin and ejector sleeve venting;
The ejector pin and the sleeve are vented with the matching gap of the core.

5. Porcerax venting;
Porcerax is a material sintered from a spherical granular alloy. The pre-hardened steel is inferior in strength but loose in texture, allowing gas to pass. Place such an alloy in the area to be vented to meet the requirements of the exhaust, but the diameter of the bottom vent should not be too large to prevent the cavity pressure from squeezing and deforming.
6, Venting well;
On the outside of the junction of the plastic melts, a well is provided to allow the gas to be discharged therein, and a good venting effect can also be obtained.
7. Mandatory venting;
A gas vent is provided at a portion where the gas is enclosed. This method has good exhaust effect but leaves a trace of the rod on the plastic part, so the exhaust rod should be placed in the concealed part of the plastic part.