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Clean, foreignparticle-free melts are essential for a troublefree and economical production of injected parts. The partial molding channel only holds back a minimum amount of larger foreign particles in the hot channel.
Screen filters which are built into the machine nozzle or the hot channel are an economical solution in restricting foreign body intrusion into the molded part. The screen filter is accomodated in the tip of the Herzog needle shut-off nozzle. The needle of the shut-off nozzle actually passs through the filter. The filtration of the injected mass is made by the radially arranged drillings. The large number of drillings causes a minimal decrease in pressure. The filter drillings must be in the diameter selected so that partially injected points are not affected by the dirt particles.
The following filter drillings are available from stock:
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Nozzle type
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HP0
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HP1
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HP2
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Bore diameter
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0.7
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0.9
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1.3
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Other dimensions are available on request. |
