date:Sep 28, 2012
(RH) in their environment so the undesired effects of humidity can be avoided, such as condensation in the packaging.
Polymers such as polypropylene (PP), polylactic acid (PLA), polyethylene terephthalate (PET) and polystyrene (PS) were investigated and stretched.
Study results
The most resistant film was polylactic acid (PLA) while sodium chloride (NaCI) in combination with PLA and PP worked best, Saengerlaub told FoodProductionDaily.com.
In this case the water vapour absorption and desorp