The location of the gate is extremely important to the satisfactory operation of the mould.
Gates must be located so that air contained in the cavity can be vented through easily
placed vents, usually at the parting line.
Weld lines should be avoided by locating the gate so that the flow proceeds uniformly out
from the gate in the direction of the greatest dimension, and by choosing the correct gate
design.
Gates should not be located at any location which is flexed or subject to mechanical
stress since the gate area is normally a weak spot in the part, due to high residual stresses.
Gate or land length has a major effect on pressure drop through the gate. Gate lengths are
usually fairly short, to minimize pressure drop.
Gates must be located so that air contained in the cavity can be vented through easily
placed vents, usually at the parting line.
Weld lines should be avoided by locating the gate so that the flow proceeds uniformly out
from the gate in the direction of the greatest dimension, and by choosing the correct gate
design.
Gates should not be located at any location which is flexed or subject to mechanical
stress since the gate area is normally a weak spot in the part, due to high residual stresses.
Gate or land length has a major effect on pressure drop through the gate. Gate lengths are
usually fairly short, to minimize pressure drop.
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