What Are Mylar Bags?

Mylar bags are made from a polyester film known as BoPET (biaxially-oriented polyethylene terephthalate), which is layered with aluminum foil to create a strong, flexible barrier against light, moisture, oxygen, and contaminants. This makes them ideal for packaging and storing perishable items or sensitive materials.

The name Mylar is actually a brand name trademarked by DuPont, but it has become a generic term for these types of high-performance storage bags

Key Benefits of Using Mylar Bags

Long-Term Food Storage

One of the most common uses for custom mylar bags with logo is emergency food storage. These bags can extend the shelf life of dry goods like rice, beans, grains, flour, pasta, and dehydrated fruits by up to 20-30 years when combined with oxygen absorbers and proper sealing.

Their ability to create an airtight, moisture-resistant seal makes them a top choice for preppers and food manufacturers alike.

Moisture and Oxygen Barrier

Mylar’s multi-layer construction prevents external air and moisture from getting in, while also blocking harmful UV rays. This protects products from spoilage, oxidation, mold growth, and degradation — especially important for food, herbs, pharmaceuticals, and electronics.

Versatility Across Industries

Mylar bags are used in a wide range of industries, including:

Food packaging

For both commercial and home use

Cannabis industry

For preserving aroma, potency, and freshness

Pharmaceuticals

For storing medical powders, pills, and supplements

Electronics

For protecting components from moisture and electrostatic discharge

Cosmetics

For sachets, masks, or powders

Retail

For premium, resealable packaging

Customization and Branding

Modern custom wholesale boxes are available in various sizes, colors, and styles — including ziplock, stand-up pouches, and child-resistant options. They can also be fully customized with logos, designs, and product information, making them ideal for retail branding and consumer appeal

Types of Mylar Bags

There are several types of Mylar bags to suit different needs:

Flat Mylar Bags

Great for compact, flat items like powders or spices.

Stand-Up Pouches

These have a bottom gusset that allows the bag to stand upright on shelves, perfect for retail packaging.

Ziplock or Resealable Bags

Offer easy access and resealing for products that aren’t used all at once.

Vacuum-Sealable Mylar Bags

Used with vacuum sealers for maximum air removal.

Child-Resistant Bags

Designed to meet safety regulations for products like cannabis or chemicals

Tips for Using Mylar Bags Effectively

To get the most out of your Mylar bags:

Use Oxygen Absorbers

They remove residual oxygen inside the bag, extending product shelf life.

Seal Properly

Use a heat sealer or a flat iron to create an airtight seal.

Label Clearly

Always label your bags with the product name and date for easy identification.

Store in a Cool, Dry Place

For best results, keep sealed Mylar bags away from sunlight and humidity

Eco-Friendly Considerations

While traditional Mylar bags aren’t biodegradable, many manufacturers now offer eco-friendly options made with recyclable or compostable materials. Choosing sustainable packaging can help reduce environmental impact while maintaining product integrity.

Final Thoughts

Whether you’re a manufacturer looking for high-performance packaging or an individual storing emergency supplies, Mylar bags offer unmatched protection, freshness, and flexibility. Their ability to shield against oxygen, moisture, and light makes them a go-to solution across industries.

With customizable options and long-lasting durability, Mylar bags aren’t just packaging — they’re a smart investment in product quality and brand reputation.