Mylar bags have been used to store food for a long time. They have quite a history in food packaging and preservation. They have properties that allow it to be a barrier against moisture, aromas, gas and light that would ruin food as well as being a good insulator coupled with its high tensile strength. It is considered an ideal bag for storing food in the long-term. Here are some quick tips on how to use the Mylar bag correctly.
When you store food in these boPET bags, do not overfill them. Do not cram the contents to the brim especially when you are storing food in bulk. Make sure you leave room to place an appropriately sized oxygen absorber inside to scavenge out all of the oxygen remaining inside the bag once it has been heat sealed. These FDA approved oxygen absorbers packets are made of iron powder and salts that are designed to chemically suck out the oxygen from inside the bag and just leave only harmless nitrogen left over.
When you seal the bag, just seal the top ½ to ¾ inch. If you are using a clothes iron, make sure you use a hard surface to ensure that there aren’t any ripples or folds in the bag once you seal it. When you are storing flour and other powdery stuff, ensure that all residual dust is removed from the area that is to be ironed by wiping the inside edges of the bag first.
The two most common sizes of Mylar bags that are used are the one-gallon and five-gallon sized bags. The large five gallon Mylar bags are used together with a 5 or 6 gallon bucket. The bag essentially acts like a pail liner and is placed inside the plastic bucket and filled with the foodstuff that is to be stored. When you use the five gallons sized bags to store food, you merely place the bag in the bucket, fill it up with the food, place the O2 absorber on top, heat seal the Mylar bag and then proceed to close the bucket’s lid tightly.
The combination of a Mylar bag and a oxygen absorber placed inside a tightly sealed bucket is the perfect defense against elements like moisture, time, light and pesky rodents that can ruin your precious and valuable food. Even if the bucket is not tightly closed with a fitting lid, a bag of the right thickness should be good enough though it is highly recommended to use a fitting lid because of rodents.
When you store food in Mylar bags of the one-gallon variety, it is advisable to store grains, spices, powdered food and baking ingredients in them. This type of storage bag is also useful for storing foodstuff containing amino acids. When you are looking to buy one gallon Mylar bag, check the thickness should be at least 4 mils thick.
The thickness of a 5 gallon Mylar bag could be up to 5.25 mil. One thing about Mylar bags is that, the thicker the bag, the more strength you are assured of and, therefore, more guarantee for preservation. However, you usually do NOT want to go over 5.25 mil in thickness. You see, the biggest problem with using say a 7 mil bag is that they don’t seal well and many times ripples and folds are created that allow air to come in and perish your food.
An easy way to seal a Mylar bag is by using a clothes iron or a hair straightener. When you are sealing it, ensure that you check out the temperature of the straightening iron. Too high a temperature will ruin the bag by compromising its strength. A medium setting will usually work just fine.
Food preservation and storage methods have transcended time and technology. The challenges of keeping food fresh are still the same. Even with technology, like refrigerators, challenges like power outages can cause food to rot inside. But with Mylar bags, the solution to food storage is ideal. As long as you follow the instruction of using the bag, you will be assured of fresh food.