Short shot or short molded Defect Product

this type of defect is caused by A molded product that is incomplete because the mold cavity was not filled completely. If a part short shots, the plastic does not fill the cavity. The flow freezes off before the flow paths have completely filled. commonly the main caused could device in...

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The calculation of cooling time in injection moulding

Various way available to calculate cooling time in injection mould, the easiest way of course using numerical method, software package like mold flow, C - mold or your own compile numerical method language also available in the market, for detail and specific calculation, i suggest to write your own...

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how jetting occur on molding process

Jetting occurs when polymer melt is pushed at a high velocity through restrictive areas, such as the nozzle, runner, or gate, into open, thicker areas, without forming contact with the mold wall. The buckled, snake-like jetting stream causes contact points to form between the folds of melt in the jet,...

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how flash occurs on mould?

this post shows the flashing process occurs in the injection mold, in fact many things that influence the occurrence of the flash, but can be broadly divided into 3 1. material effect 2. Influence of the injection mold 3. Effect of mold conditions for example, due to the influence of material, rubber and PP is certainly more difficult to control defects in flash because it has a low viscosity compared to PBT, or Xyron. because of mold flash, can...

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Video basic understanding of injection mould

I found a great video from youtube, although it was on youtube a while, but this video deserves to be given the thumbs. in this video can be seen clearly how the process of formation at the injection mold part to work, well we'll find out in detail the process of melting and movement of the screw on the injection machi...

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rapid heat cooling system on injection mold

rapid heat temperature, is actually an old method that is often used to eliminate the weld line, the front cover products such as TV, is an example of the most frequently used method, but its use is now developed further, as demand for products with low cycle time and quality of surface nice sharp increase lately, covering progress being made is that the control system is used, so the heat on the heating rod is held constant, the only heating occurs...

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