Composites World / NetComposites

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NetComposites Ltd has transferred the rights and ownership of this website to Gardner Business Media Inc.

On 1st January 2020, NetComposites' media assets including, newsletters and conferences were transferred to Composites World (Gardner Business Media).

This site is no longer being updated. Please direct all enquiries to

For further details see our joint press release.

Sink Mark

A shallow depression or dimple on the surface of an injection moulded part due to collapsing of the surface following local internal shrinkage after the gate seals; an incipient short shot.