This kind of structure is common mold cavity three large panels or need more vents, or to have multiple cavity molds. Plastic channel system is generally trapezoidal or trapezoidal in cross section adjustment for easy machining and assembly pull latch opening mold vents. The advantage of this kind can arrange multiple vents in the heart cavity mold for big, makes filling fast and better. However, that can cause overheating, for materials with long fiber structure and low viscosity
size of the vents key point, if the Closing too big or too small, the taper portion of it traces found it Unknown?
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