What is the Objective of Adding Powder in Coagulant

Manufacturer: We are glove manufacturer. It is established that most manufacturers today are making powder-free medical gloves by removing powder in their coagulant. However we notice that some still insist on using powder in coagulant which is removed during a post washing process. Why is this so?

John Woon (Senior Latex Consultant): Powder in the coagulant serves other purpose besides being a detackifying powder. One obvious advantage is the reduction of excessive drainage or flow of the wet coagulant as the former is withdrawn from the coagulant tank resulting in uneven coating of the coagulant on the former.

As the coagulant evaporates on the former, the powder increases its viscosity and hence minimizing the excessive run or flow. The "roughening" effect of the powder also helps.