Dissolving Procedures
(1) Start with unheated water. The temperature of water should not over 30°C.
Please kindly noted that it is likely to form lumped material if PVA is added to preheated water. Lumps are very difficult to dissolve completely.
(2) Turn on agitator.
(3) Put in PVA slowly. One to two minutes per 25kgs bag with uniform adding rate is recommended. The slower the rate of adding material, the less lump will form.
(4) Let PVA slurry be swelled at room temperature without heating for 15~30 minutes, can reduce the dissolving time.
(5) Heat to 85~95°C.
(6) Hold at temperature till PVA is completely dissolved, usually need one hour.