Two processes for building blow-moulding test tools

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The steps for producing the prototype

First, it is important to design the tool with additive manufacturing in mind. Vent areas need to relieve extreme temperature or pressure and the pinch design has to be strong enough to function. Also, metal plates should be inserted on top to absorb the impact of the blowing pin against the mould.

The next step is creating the tool. Users can print the tool with either inkjet or FDM technologies using the correct build orientation and parameters.

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This is followed by post processing. Users should perform secondary processing on the mould to alter its surface finish if desired. Locator pins or metal plates should be inserted if necessary, and release agents or coatings applied to prevent blown plastic from sticking.

Now it’s time to start making test products

The next step is moulding. Users should employ the moulding parameters required to increase mould life and maximise part quality. This is followed by evaluation, a time to determine whether the shape, mould design or parameters should be changed to build a successful production tool.

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