August 1, 2014
It’s not uncommon for our customers to package products that have a particularly strong odor such as car fresheners, incense, food, or even animal bait. Sometimes, it is desirable for the smell to permeate through the bag so that the consumer can sample it. In other cases, the odor must be kept securely inside the bag. The property commonly used to quantify how well a material contains an aroma is called its Oxygen Transfer Rate or OTR. OTR is the steady state rate at which oxygen gas permeates through a material at a specific temperature and humidity.
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