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Mylar Bags, 4 Mil
Mylar bags are a special type of metalized vacuum-sealable bag. Just like standard vacuum bags, they have an inner layer of FDA approved food safe polyethelene. The poly layer has a relatively low melting point, so it can be heat-sealed to close the bag air tight. Fused to the outside of the poly layer is a layer of nylon that acts as a strong barrier to oxygen soak-through (a far better barrier than poly). Nylon cannot be heat-sealed, but the duo of poly and nylon is heat-sealable and highly impermeable to oxygen. What distinguishes Mylar bags is a third layer of thin, flexible metal fused to the outside of the nylon layer. This thin metal layer provides the ultimate oxygen barrier. And outside the metal layer is another polymer layer for abrasion resistance. Mylar bags are the best choice for multi-year oxygen-free storage of food (or other goods). They also provide the maximum barrier against moisture and any vapors that may be in the storage environment, including possible fuel vapors. Mylar bags are normally used as liners inside a rugged container (typically a quality plastic bucket ) that will protect your goods and the Mylar bag from physical damage (including damage from vermin).
Sizes
These durable 4 mil thickness Mylar bags are pre-sealed on three sides to form the bag. The 20 x 30 inch bags are sized for use inside either a 5 or 6 gallon bucket, leaving enough bag sticking out the top, to be heat sealed. The 8 x 12 inch bags have a 1-quart capacity.
First step: Sealing the Bag
Two steps must be taken to protect your food with Mylar bags. One is that you must seal the bag, and the other is that you must get the oxygen out. Sealing the bag can be done with a commercial impulse sealer. That's a machine that fuses the bag mouth shut. A straight impulse sealer does NOT vacuum air out of the bag, it just seals it shut. Commercial impulse sealers are available with wide enough seal bars to span the full 20" width of the large Mylar bags. It's an excellent way to greatly extend the fresh taste and nutrient quality of foods on the counter, or in the fridge or freezer, by eliminating the rapid degrading effects of oxygen.
Second step: Oxygen Removal
You could spend $8,000 on a huge chamber-style vacuum machine designed to vacuum-extract the contents of a large bucket, and seal the Mylar bag. A much less expensive route, and one that's equally effective, is to simply put one or more oxygen absorber packets into the bag before you seal the bag closed. For small-scale operations, oxygen absorbers are highly economical, reliable and easy to use.
Interestingly... there's a reason why these bags look like Mylar party balloons. It's because they're made of a commercial version of the same material as the balloons. Helium is an extremely tiny atom, even for a gas. In an ordinary latex balloon, a special chemical coating must be added to keep the helium corralled... without that coating, the helium atoms holler "Adios, we're outta here" and zip right out through the balloon's wall, leaving it shriveled and very un-party-like. Whether or not helium contacts your food is irrelevant, because helium is highly inert. But Mylar's ability to stop the passage of even tiny helium atoms is great testimony to its effectiveness against much larger molecules including O2 and H2O!
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1 - 10 of 31 reviews
The Mylar bags from Pleasant Hill Grain, are fantastic. They are strong, perfect mil they will keep your products stored safely for many years to come. I recommend any thing that Pleasant Hill Grain carries. They are a first rate company. Even if you happen not to like something they have, they'll accept a return. I always know where to go to get a good product and good service. Thanks for all you do PHG, William S.
I've bought many things from Pleasant Grain. Mylar bags, sealer, grain mill, different whole grains, sprouting seeds, etc. I have never been disappointed in anything that I have received from them. All products were shipped in timely fashion. Look forward to a long relationship with the company.
Robyn N
Happy with the size and quality of this product, will definitely buy again.
Good quality, prompt shipping and a fair price.
these bags are used just to line our buckets for buffer between food and plastic. High quality durable feeling to them. Would buy again.
Fit 5 gallons bucket perfectly. They hold 25 lbs of beans or rice easily.
It's great quality, easy to use and the perfect size for my 5gal bucket. I am a happy shopper!
Thanks for the Mylar bags. We were excited to receive them. Having read a number of other reviews about the many benefits for using these bags for longer term storage, we bought a good number of the large bags to be used to store wheat. We quickly received the bags and a now going to put them to good use. Thanks for the quick delivery and customer services.
ordered, was shipped on time, delivered day was expected. order was correct, and am using many now to store dehydrated foods in.
Very good quality long term storage bags. Not skimpy at all in size and of decent weight/thickness for durability while handling.
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