Finishing chemicals defoamers

Because of the deaeration character of INTEX DEFOAMER 41 it is extremely effective in package dyeing and promotes the sinking of carpet. INTEX DEFOAMER 41 is nonionically emulsified making it compatible with all dyestuffs and finishing chemicals. 

Defoamers. Foam is a common problem in papermaking systems (27). It is caused by surface-active agents which are present in the pulp slurry or in the chemical additives. In addition, partially hydrophobic soHd materials can function as foam stabilizers. Foam can exist as surface foam or as a combination of surface foam and entrained air bubbles. Surface foam usually can be removed by water or steam showers and causes few problems. Entrained air bubbles, however, can slow drainage of the stock and hence reduce machine speed. Another serious effect is the formation of translucent circular spots in the finished sheet caused by permanently entrained air. 

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