Burnt Marks Diesel Effect

Troubleshooting - Problems and Solutions 143 5.2.4 Burnt Marks (Diesel Effect)... 

Problems and Troubleshooting - Injection Molding Flow chart 5.2.4 - Burnt marks (Diesel effect)... 

Flow chart 5.2.4 illustrates the schematic approach to solve the problem of burnt marks, also known as diesel effect. Overstay of the material in the barrel leads to the burnt marks. Machine size has to be considered to resolve the problem. There is a possibility of a vent getting clogged. Improve venting and in some cases the vent may be deepened. Increase in gate size may also be required in some cases. 

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