---
title: "Injection Molding Sink Marks"
description: Sink marks appear as local surface depressions where thicker sections, ribs, or bosses cool and shrink unevenly; packing, gate freeze, wall thickness, cooling, and resin shrinkage influence severity."
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manufacturer: "HYNEU"
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# Injection Molding Sink Marks

Explore Injection Molding Sink Marks through the HYNEU Manufacturing Knowledge Base. Discover practical information about injection molding sink marks,  sink marks,  plastic sink,  molding defects, including materials, manufacturing processes, design considerations, applications, specifications, and production methods. Our knowledge base provides useful insights to help you better understand manufacturing requirements and make informed decisions for your projects.

![Injection Molding Sink Marks](https://static.hyneu.com/uploads/industries/default/yRB5ECVGphizu.webp)

## Injection Molding Sink Marks Knowledge
- [Injection Molding Gate Seal Study: Prevent Sink Marks and Weight Variation](https://www.hyneu.com/guides/injection-molding-gate-seal-study-prevent-sink-marks-weight-variation.html) — 2026-10-29
- [Packing Injection Molding: How Packing Pressure Controls Part Quality](https://www.hyneu.com/guides/packing-injection-molding-packing-pressure-control-part-quality.html) — 2026-10-26



## Related Topics

- [Metal Part Defects](https://www.hyneu.com/knowledge/metal-part-defects/)
- [Defect Analysis](https://www.hyneu.com/knowledge/defect-analysis/)
- [Injection Molding Sink Marks](https://www.hyneu.com/knowledge/injection-molding-sink-marks/)
- [Injection Molding Gate Marks](https://www.hyneu.com/knowledge/injection-molding-gate-marks/)
- [CNC Tool Marks](https://www.hyneu.com/knowledge/cnc-tool-marks/)
- [Injection Molding Cracking](https://www.hyneu.com/knowledge/injection-molding-cracking/)
- [Plastic Part Defects](https://www.hyneu.com/knowledge/plastic-part-defects/)
- [Assembly Defects](https://www.hyneu.com/knowledge/assembly-defects/)

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