All You Want to Know about Mylar Bags

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Mylar bags are strong, light and tight, protecting your food against oxygen, moisture and light. When used correctly, they can make your food last decades.

They are also odor-proof. To seal them, use a standard clothes iron to press the top seams together until they are completely sealed. You can also seal them with a impulse or vacuum sealer.


Mylar bags are used for long term food storage. They have an extremely low oxygen transmission rate, and offer protection from moisture, light, and odors. They are puncture-resistant*, and come in a variety of thicknesses. Some are resealable, while others need to be sealed with a vacuum sealer or heat sealer (or a hair straightener or clothes iron). The quality of mylar bags depends on the materials used, manufacturing methods, and after-sale service.

Mylar is made from BoPET (biaxially-oriented polyethylene terephthalate). It has a wide range of uses because of its many unique properties. These include high tensile strength, temperature resistance, chemical stability, transparency, protection from gases and odors, and electrical insulation. When used correctly, food stored in Mylar can last up to 25 years. However, storing some foods in Mylar for longer than that can cause spoilage. The best foods to store in Mylar are dry and dehydrated items like pearl barley, brown sugar, granola, whole wheat flour, brown rice, and iodized salt.

Easy to print

Mylar bags are a flexible packaging option that can be printed with a wide variety of designs and images. The printed image will last for years if the bag is kept in a cool, dry place. However, the print can fade over time if it is exposed to sunlight or extreme temperatures.

You can print on Mylar bags using a thermal transfer printer. This type of printing produces high-quality prints that won’t smudge or fade over time. You’ll also need special ink designed for use with Mylar. Otherwise, your print may not stick to the bag and could smudge or fade.

The most common way to print on Mylar bags is by using a digital printer. This process is less expensive than flexographic printing and is ideal for small print runs or unique designs. It also provides the flexibility to change the data in the design as needed.

Easy to store

Custom packaging house are great for long-term storage of food and other supplies. They can help you save money and prepare for disasters or other emergency situations. They protect your food from oxygen, moisture, and pests. You can also use them to store valuables like coins or jewelry. They are very easy to store and come in a variety of sizes. You can find them at most big box stores, specialty stores, and online.

When storing foods in Mylar bags, it is important to choose a quality product that is food-safe. You should also consider the size of your food and the amount you need to store. You should also include oxygen absorbers and properly seal the bag.

Some food items stored in Mylar bags can last decades when properly packed. Some people report that dehydrated vegetables and fruits, white sugar, flour, whole grains, pasta, and powdered milk have a shelf life of up to 20 years when sealed in Mylar bags.

Easy to open

The main advantage of Mylar bags is their ability to preserve foods for long periods without losing their flavor or aroma. These bags also shield foods from harmful microorganisms, such as bacteria and molds. They are also ideal for storing herbs and spices. However, they are not suitable for storing foods that are high in moisture or oil.

When using Mylar bags, be sure to use them with oxygen absorbers. These small packets contain iron oxide powder that reacts with oxygen in the air to burn it up, preventing its contamination of your food. These packets are often sold along with Mylar bags.

When shopping for Mylar bags, beware of deceptive listings. Many online sellers claim that their bags are 7 mil thick, when in fact they are only 3.5 mil thick per side. This is a significant difference, and should be considered when purchasing Mylar bags for long-term storage. Ideally, you want Mylar bags made of polyethylene terephthalate (PET), which is safe for direct contact with food.

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