- In Figure a, with the use of Cold Runner system, stem volume spraying around 25cm3; in Figure 1 b with Hot Runner simple system consisting of 4 nozzles and 1 Cold Runner system short, that area fell 5cm3 spray stalk; while in figure c is absolutely Hot Runner System with 16 nozzles, spray and channel stalk completely removed. Use the format (b) will reduce waste by 20% with only 1 Hot Runner System with moderate price. Use the form (c) would be very expensive, but will minimize the waste of plastic.
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