Some raw materials will precipitate to the bottom of tank due to the specific gravity or shape after storing for a long time, which caused the paint uneven composition or become bean curd status.
Common Cause
The temperature in storage room is too low or much difference.
The paint has exceeded the storage period.
The color masterbatch on paint mixer is not often stirred.
The paint is stored too long after thinning.
There is a draught in spraying room, or insufficient air circulation when heating.
Prevention
(1) The ideal storage temperature is 25°C, and it should be stable.
(2) Do not use the paint beyond the storage period.
(3) Regularly mix the color masterbatch on the mixing machine for about 15 minutes.
(4) Do not add thinners to the paint for storage.
Repair
Put the paint on the mixer for full mixing. If the paint can be recovered, it can be used further. If it is hard, it cannot be used.
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