Heatlock ESB2, Electric Sprue Bushing

This Heatlock series, below, is currently being replaced by the A1-series of nozzles.
Before you design check availability, stock is gradually decreased.
Spare parts will be available until at least end of 2007 (apart form NPT1 bodies)
INTRODUCTION
— Length of flow in cold steel compared to fig. 1 has
now been reduced by not less than, 68%.
— Through the shortened flow length runners can be
made considerably thinner .
— Injection time can be shortened.
— Because of the short flow length, material temperature
can be reduced and cooling time can be shortened.
— Flow length is exactly the same to each cavity from
the electric sprue bush which is one provision needed
in order to get identical parts from the different
cavities.
Reduce flow length in
cold steel by 68%
The best results are as in fig. 4 using direct gating, one
bush for each cavity. This gives the technically optimal
result.
— Length of flow is only 11% compared with fig. 1.
— It is usually easier to fill the cavity form a centrally
placed gate.
— Cavity filling can be positively controlled through
temperature control of the different bushes.
fig. 3.
Direct gating usually is
the most effective way.
Which alternative should you choose?
This depends on:
— How many of the advantages you want to achieve.
— How much you are prepared to invest.
We will be pleased to serve you in choosing the most
suitable Heatlock equipment from our wide range of hotrunner
bushes. Advising you the most favourable manifold
system suitable to your mould.
fig. 4.
Date: 031118, © LKM Heatlock Co Ltd
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