How to Resolve Short Shot Molding Defect?

"Close-up image showing a plastic part with a short shot defect from an injection molding process.


Plastic injection molding redefines manufacturing by precisely and efficiently producing useful parts. Although plastic injection molding is efficient, faults are a natural part of the process. Identifying the causes of these issues helps manufacturers prevent and fix them.

Defect Name Description of the Defect Cause of Defect Countermeasure
Short Shot It is the condition of the product that is prematurely or incompletely formed. There are different causes of shortshot. Below are some. 1. Insufficient shot size. 2. Low Holding pressure 3. Low barrel temperature. 4. Low injection speed   There are different approach in troubleshooting shortshot depends on its cause. Below are some adjustments that you can perform. 1. Increase shot size 2. Increase holding pressure 3. Increase barrel temperature. 4. Increase injection speed.  

Analyzing the root cause of the short shot is the best approach before you adjust or troubleshoot. It will not just lessen the material consumption, but it will also shorten the troubleshooting time. Troubleshooting in plastic injection molding involves experimenting with settings, analyzing outcomes, and making small changes. With continued practice, you will soon be molding like an expert.

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