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Venting Faqs

Cooling Faqs

Supacool

1. How much water will Supacool deliver to the part?

It depends on how much water Supacool is ‘pre-charged’ with. Supacool has a maximum capacity of 3 litres.The pre charge will depend on the size of the mould . The larger the mould, the greater the volume of water, the smaller the mould, the smaller the volume. If the volume is too large for the size of the mould, the water droplets may condense.

2. Will Supacool work with our existing setup or will I need to modify the mould?

The base plate that Supacool is mounted onto needs to be bolted onto the outside of the mould in which it will be used – usually over an existing vent hole (depending on the location of that hole). If the same unit is to be used on multiple moulds, additional mounting plates need to be purchased to enable it to be swapped between them.

3. Where can I buy Supacool from?

Supacool can be purchased from any one of our distributors?

4. What impact does water have inside of the plastic part?

Explanation of what happens when water is dripped onto hot plastic rather than steam…..

a) Liquid water dropped onto molten plastic will leave a small crater defect in the plastic. A drop of water hitting molten (hot) plastic will vapourise and the expansion involved in this process, causes the crater.

b) Therefore, water droplets of a larger size are undesirable because of this effect. If any of the injector junctions are leaking or a nozzles ceases misting effectively (generally through a partial blockage – often scale build up from water impurities), larger sized droplets may contact the plastic causing a stippled look.

c) This will be more of an issue on smaller parts and is generally not a problem if the directions are followed. In bigger parts, larger water droplets are likely to still be vapourised before they contact the molten plastic because of the increased time and distance to contact

5. What sort of moulds would Supacool be most useful in?

Supacool will be useful in moulds where you want to reduce the cooling time significantly. It will be more useful in larger, thicker walled moulds where the cooling cycle time is prolonged. For smaller, thinner or double walled moulds, especially with tight ‘kiss-offs’, internal air cooling via Technovent would be a better choice.