Chemistry

for stains on fabric a dying person thinks very frequently that these are stains that comes during vat dying. But no sir there are certain units which have ability to have stains during reactive dying. it may have several reasons. pre-treatment fault water used in dying brand of antimigrating agent cleaning of machines in vat dyeing stains may come from pad steam. dispersing agent and anti foaming agent are added to avoid stains from pad steam. sodium alginate and primasol FFAM are better to use in vat dyeing to avoid stains. Chilled water is very necessary in vat dyeing on padsteam. trough temperature should be less than 25 degree at any cast other wise problem can occure.