A certain percentage of “fly loss” may be added to the weighing of a reinforcing type pigment, such as carbon black, hi-sil, silica, or similar (filler) materials, whenever they are used in excess of 10 parts per 100 RHC in the non-productive stage only. “Fly loss” is not included for any ingredient of the productive stage.“Fly loss” occurs in a Banbury as a result of the action of rotor, pigments and rubbers. The churning action in the mixing chamber tends to blow pigment/filler out through any opening. With proper Banbury venting and mixing procedures, “fly loss” can be held below 2 %.
A certain percentage of “fly loss” may be added to the weighing of a reinforcing type pigment, such as carbon black, hi-sil, silica, or similar (filler) materials, whenever they are used in excess of 10 parts per 100 RHC in the non-productive stage only. “Fly loss” is not included for any ingredient of the productive stage.<br><br>“Fly loss” occurs in a Banbury as a result of the action of rotor, pigments and rubbers. The churning action in the mixing chamber tends to blow pigment/filler out through any opening. With proper Banbury venting and mixing procedures, “fly loss” can be held below 2 %.
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