Paper Machine Chemicals
Spray starches are used to impart z-directional strength to the paper.
It helps in reducing the delamination of the plys of the board.
These are applied on the paper machine wire through the spray bars while the web is formed.
Used for improving the Ply bond of the board.
In special cases it is used for improving the Z-directional strength or to reduce the de lamination tendency between plys.
The gel temperature is a very important factor for the performance of the starch.
The stability and the settling rate are the other factors decides the trouble free operation in using this starch.
By using this starch the spring-back tendency of the board improves.This is a important parameter requirement in Cigarette board.