CAVITY AND CORE COMPONENTS Dynamic Gas Vents
TECHNICAL NOTES
SGD6
The valve type SGD6 has to be fixed into the mold insert from the back side. Spacer DSGD and the dowel code GSGD can make this application easier. The spacer is specially designed to collect the gases from the valve toward a central hole that communicates with the open atmosphere. It is possible to machine the spacer in order to reach the desired length. The dowel allows to fix the spacer and the valve and collects the gases into the central hole.
DSGD
GAS
GSGD
GAS
SGDL
The valve type SGDL has to be fixed into the mold insert from the back side and the valve needle has to stick out from the mold surface for a dimension equal to the stroke “C”. The spacer code DSGD... and the dowel code GSGD...can make this application easier. The spacer is specially designed to collect the gases from the valve toward a central hole that communicates with the open atmosphere. It is possible to machine the spacer in order to reach the desired length. The dowel allows to fix the spacer and the valve and collects the gases into the central hole.
Code:D-SGD6
Code:G-SGD6
VALVE SHAPING The SGD6/SGDE1610/SGDE1615 valves can be shaped within the maximum limit shown below. ITEM NUMBER A B K Q SGD605 6 4 0.5 0.25 SGD608 6 4 0.5 0.25 SGDE605/805/1005 4 0.5 0.25 SGDE608/808/1008 4 0.25 0.25 SGDE1610 4 0.5 0.25 SGDE1615 4 0.25 0.25 Some polymeric materials produce remarkable gas volume during melting process. Oily gas deposits can pile up and obstruct the gas venting channels. It is possible to machine extra gas venting channel in the mold as shown in the picture to improve valve performance.
GAS
GAS
ØB
ØA
Ø16
Ø10 Ø14
ØB
SGDE605/805/1005 608/808/1008
SGD6
SGDE1610/1615
291
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