When evaluating a packaging material the “Moisture Vapor Transmission Rate” (MVTR) is the measure of how easily moisture can penetrate the packaging film. The higher the MVTR value, the greater the penetration rate (i.e. the faster moisture can get into or out of a package), and the lower the MVTR the stronger the ability of a package to keep dry goods like cookies moist (because it’s not letting additional moisture into the package) and moist products moist (because its keeping the moisture that already exist in the product inside the package).
There are all sorts of factors that can affect the moisture transmission into a package, everything from the thickness of a material to the coatings used on the film. Luckily for you, we here at ESPPKG.COM are experts in Barrier Films. We are here to help guide you to a package that will keep your product as fresh as the day it left your farm, grow house, bakery or dispensary.
Moisture transmission often needs to be balanced with Oxygen Transmission Rate (OTR) in order to provide the best barrier solution for a product’s needs. Come back for our next blog post where we explore the wonderful world of oxygen permeability (or rather what makes shit stale) and why you shouldn’t plan any trips to Mars.