Cause Comments Recommendations Location
High nonvolatile content and detergent concentration If the working solvent contains too high a concentration of nonvolatiles, they may be carried over into the impregnating solution, where they can adversely affect water repellancy Distill working solvent more often. Distill impregnating solution. Check extraction speed If too slow, carryover may prove excessive. Rinse solvent
Insufficient concentration of impregnating agent A minimum concentration of impregnating agent is necessary to obtain satisfactory water repellency Follow manufacturer's recommendations Dip tank
Temperature of solvent is too low Some impregnating agents become partly insoluble when the temperature drops too low Adjust solvent temperature to a minimum of 68°F Dip tank
Water content is too high If the water content of the fibers is too high, detergents may be adsorbed. This may adversely affect water repellency. Carefully control water content of working solvent Rinse and wash solvent

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