date:Sep 28, 2012
tion was much faster than for polypropylene (PP). PP has a lower water vapour transmission rate. Therefore the selection of the carrier polymer has a high impact on efficiency.
The salt in the films absorb and desorb water vapour in high quantities. It is ten to one hundred times more than desiccants such as silica gel can absorb, he said.
One objective is the prevention of water vapour condensation in closed packets. The intention is a longer shelf life and better product appeal, because cust