I am looking for any regulatory guideline which defines the usage of the regrind materials in case of plastics, for the medical devices.
The use of virgin material is no doubt the best, but in some cases, I have noted that the manufacturers use upro a maximum of 20 % regrind into virgin material.
Appreciate if any one could help me on -
1. Guidleines for regrinding (preferably FDA)
2. How is the maximum percentage of regrind decided for parts ?

The use of virgin material is no doubt the best, but in some cases, I have noted that the manufacturers use upro a maximum of 20 % regrind into virgin material.
Appreciate if any one could help me on -
1. Guidleines for regrinding (preferably FDA)
2. How is the maximum percentage of regrind decided for parts ?
