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# Injection moulding explainer video: How cooling time affects the final part
- URL: https://www.plasticsiq.com/injection-moulding-explainer-video-how-cooling-temperature-affects-sink-marks/
- Published: 2023-02-28T11:50:03.000Z
- Updated: 2026-09-21T18:00:45.000Z
- Description: In injection moulding, cooling time is crucial. Once the molten plastic has been pushed into the mould cavities, time is required to allow the plastic to cool, forming a finished part.
- Author: PlasticsIQ Staff
- Tags: Insights, Injection Moulding

In injection moulding, cooling time is crucial. Once the molten plastic has been pushed into the mould cavities, time is required to allow the plastic to cool, forming a finished part. 

Find out what causes sink marks, and how to prevent them with the optimal cooling parameters. 

This video was created and provided by Hymid, an injection moulder based in Torquay. To find out more, visit [hymid.co.uk](https://www.youtube.com/redirect?event=video%5Fdescription&redir%5Ftoken=QUFFLUhqbFNoa0M0RTk2bGJZb0hjTklqeXpmMnJtT2FCd3xBQ3Jtc0ttUG5pZml2dHh3ejNJWG9CVXZuTE0zYlN0dmhmQ2ZrcUtLeFdBdnpnWUd6WW9UUG5QM3RHejRGOFhfdEtSZ2toN1RRSzMyNUlqZkM2ejhiTWdQbi10YUpRaV9obHdva216Uk9mWjZtSHpEeklnaVNWMA&q=https%3A%2F%2Fhymid.co.uk%2F&v=Hfx8oOHaR-I&ref=plasticsiq.com).