What is the injection moulding cycle time?

injection moulding cycle time

The injection moulding cycle time is made up of the mould close time, injection time, holding time, cooling time (plasticising time ) mould opening and ejection time. The cooling phase of most injection moulding cycles is the longest and can usually be up to 60% of the total cycle time.

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Why is mould shrinkage so important?

mould shrinkage

Material and mould shrinkage ConsiderationsWhen we are designing any plastic part we need to consider mould shrinkage or more specifically material Shrinkage. When we injection material into the mould we usually see a difference to the amount of shrinkage in the in-flow direct direction compared to the cross-flow direction. This difference in shrinkage can cause […]

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Why are your plastic parts warping?

plastic parts warping

  For parts that are gated in the centre via a sprue gate, pin gate or hot-drop. When filling your parts like this your parts are filling radial or have a disc-type flow.         For central gated parts, the radial flow can be taught of as the flow direction, while the circumferential […]

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plastic injection molding

plastic injection molding

Well a simple walk through any supermarket will show you the range of items that are being produced with injection molding. Everything from bottle caps to food containers, electronic devices, automobile parts and medical devices. Plastic injection molding is very big industry employing hundreds and thousands of people worldwide. There are new materials being developed every year that have new and improved properties. Many parts that have been traditionally manufactured with cast metal are now being manufactured with fibre reinforced plastics using traditional injection molding process.

If you need help in designing your plastic part for injection molding or if you need assistance with tool design please contact me at. colm@pro-plastics.com

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The truth of injection mold plastics

The truth about plastic injection moulding

Depending on your budget and quantity of parts you need to manufacture will determine whether you should get into the in-house moulding or contract out this work, likewise for the tool building. All in all plastic injection moulding is a very lucrative business where margins of 25% and more are achievable. However, the initial capital expenditure is high on machine, equipment, tooling and materials, not to mention labour costs. If you want any advice or training on injection moulding please contact colm@pro-plastics.com.

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Plastics Injection Molding

plastics injection molding

A wide variety of products are manufactured using injection molding, which varies greatly in their size, complexity, and application.  I offer a range of consulting services to anybody involved in plastic injection moulding. I also offer training in injection moulding for those wanting to learn more. The injection molding process requires the use of an […]

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What you should know about injection molding.

injection molding

Injection moulding is a process for producing parts in large volumes. This process is employed when the same part needs to be made thousands or even millions of times. The process is very repeatable and consistent. Injection moulding can use many different types of material. The main advantage of injection moulding is that it can produce consistent and repeatable parts on a large scale. While the initial setup cost can be extended the unit price per piece is relatively low. It is also essential to understand as the order quantity increases the unit price cost decreases.

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injection mold

injection mold

  Your guide to injection molding Injection molding is a manufacturing process for producing parts by injecting molten material into a mould. This process is used for mass-production of plastic and metal parts that requirer good tolerances.  The plastic injection molding process is just a way to produce plastic pieces in large volumes. The injection […]

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what is injection molding

what is injection molding

what is injection molding So you want to know what is injection moulding? Basically, it is just as the name suggests the injections of a liquid into a mould. The liquid is usually a plastic of some sort. Now the liquid can also be a molten metal in which case the process is called die-casting; […]

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