We never bothered to measure the insulation resistance of various PVC color masterbatch compounds. My experience was however that orange was typically a problem with insulated wire. We used our Munsell Book of Color Charts (Electrical Power Industry Color Standard) to reduce the amount of masterbatch used while still holding an acceptable shade of color. www.munsellstore.com/default.aspx?act=pr...sell+Color+Standards Gravimetric mixers are of course the very best way of accurately controlling the amount of color masterbatch used.
As far as the insulation resistance of the various colors of masterbatch is concerned, we suggest you perform this experiment yourself with the properly dried, mixed and extruded insulation so that you develop a proper process standard. This will permanently resolve your problem unless of course you change color masterbatch suppliers.
Regards Peter J. Stewart-Hay Principal Stewart-Hay Associates www.Stewart-Hay.com 519 641- 3212
The administrator has disabled public write access.