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Tiger strips/a surface defect, which often occurs in the injection molding, is characterized by a cyclic sequence of shiny and matt stripes at the flow front.

 

 The physical cause of the occurrence of tiger stripes, is the re-melting of already frozen outer layers the thermally damaged material reaches the surface and leads to spots with a matter shininess in appearance. 

 

It is possible with calculated plots with some relations, which is being used by some raw material suppliers.

 

Mold flow should introduce Tiger strips occurrence plot.

Status: Future Consideration
We are aware of this request and have been looking for methods to predict TigerStriping. There are several competing theories out there. This will probably requier some more time.
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