Flat Mylar Bags

mylar bags

Flat Mylar Bags

IMPAK produces Mylar bags and films for a wide range of applications which require high barrier packaging to protect against the effects of oxygen, moisture, and light. Mylar possesses many desirable properties including gas and moisture resistance, chemical stability, high tensile strength, and when laminated to aluminum foil, Mylar provides a higher puncture resistance than any metallized polyester film. 75% of IMPAK’s work orders are for custom sizes, printing, or materials. We have over 60 films available for custom package production ranging from 2.0mil to 7.5mil in thickness in many colors, and even transparent.
Please Note: all of our materials meet the requirements for direct food and pharmaceutical contact unless otherwise specified.

Shop Flat Mylar Bags

Pouch Size: Less than 6"

Ideal for: small products & devices; snack & sample portions; pharmaceutical applications

Pouch Size: 6" - 15"
Medium Bags

Ideal for: long term food storage; product protection; apparel & shipping applications

Pouch Size: 15" +
Large Bags

Ideal for: bulk processing & ingredient storage; box lining; large item oxygen and moisture removal

7.0+ mil thickness
Heavy Duty Bags

Ideal for: items which require extremely low MVTR packaging; High barrier packaging starting at 7.0mil thick.



Other Mylar Bags

Zipper Pouches

Ideal for: those looking for flat mylar bags with a zipper


Ideal for: those looking for mylar barrier packaging with a spout

Stand Up Pouches

Ideal for: those looking for gusseted bags that stand up on shelves

Clear Bags

Ideal for: vacuum packaging and/or transparency (3 side seal)

What is Mylar?

Contrary to popular belief, Mylar is clear, not silver. In its basic form, Mylar is a clear material made from polyester resin. The silver effect comes from a lamination to foil or a metalized coating. In addition to its enhanced barrier properties, Mylar properly converted acts as an electric insulator, making Mylar bags ideal for packaging electronics.

Then what are Mylar Balloons?

"Mylar" balloons are actually made from metallized polyester, which is a very lightweight structure in which the aluminum is deposited by evaporation onto the surface of a polyester (Mylar) film in a thickness measured in microns (to give you an idea how thick a micron is, 1 micron is equal to 1/1000th of a millimeter; a human hair is approximately 75 microns). To view the properties of MylarFoil, please refer to our Technology Page.

A comparison can be drawn between our PAKVF4 material, which has a complete 0.000035" layer of aluminum foil, and a metallized structure like PAKVF2.5M. An aluminum foil layer acts like a flexible can, providing the best possible barrier properties. Our PAKVF4PC structure has a 0.0005" foil layer and the entire film is 6.0mil thick. It should be noted that most other flexible packaging companies sell laminated structures with only 0.000285" thick aluminum foil, which provides very little resistance to punctures and tears.

Mylar Bags for Long Term Food Storage

SorbentSystems provides all the materials to do your own emergency food storage packaging, including Mylar bags, oxygen absorbers, and heat sealers.

If you are preparing for the possibility of a food shortage or disaster, IMPAK is supplying the materials necessary for long-term food and product storage. These are general suggestions and may not apply to all applications. If you have, different applications or conditions applying to your food storage you may need a more "custom" food storage system. We are glad to answer any questions and help recommend the best storage system for your application. Learn More.

How Do I Know If I Have The Right Type Of Mylar® bag For My Application?

This is an extremely good question. The raw material of bags we recommend for in process ingredient or pharmaceutical product storage were originally designed for exporting packaged dehydrated food products. This bag is 4.5 mils thick and appears to look like aluminum foil, although the top layer is transparent. Long-term food/product storage bags and all high O2 or H2O barrier materials are NEVER transparent.

Another type of Mylar® foil with which many consumers are familiar is the "Mylar® foil balloon" that is often sold for birthdays and other occasions. The industrial name for the Mylar® foil balloon material is metallized polyester. This product is mostly cosmetic and has minimal oxygen barrier properties. We produce custom packages from this film - PAKVF2.5M. (Even PAKVF2.5M is actually 75% thicker than the balloon material!)

Any concerned individual should be very wary of an organization trying to promote "transparent" barrier bags or the shiny metallized polyester material as a barrier bag. IMPAK does produce these bags for certain uses. Long-term product storage should never be one of them and as a consumer you have the right to a fraud claim if you have received such information. Please review our product specifications.

One good example to watch for is the US Military MRE products. The packaging material used to produce the MRE's has a very high oxygen barrier. Often they will specify nylon as the outside layer of the material instead of polyester (Mylar®) due to its stronger puncture resistance and oxygen barrier properties. Most of all, you will never see a simple Mylar® (transparent) structure or shiny Mylar® foil (metallized polyester) structure used for an MRE.

It is imperative to have a good seal on any barrier pouch. We recommend using one of our heat sealers. We provide a range of units from small tabletop models to temperature controlled impulse units that can seal uncoated Tyvek and other specialty materials. Custom or "contour" seal designs are an option.

Our vacuum sealers range from a 7 lb. laboratory unit to 80" wide machines tailored to the demands of clean room silicon ingot manufacturing.

How to Choose the Right Package

Consider the IMPAK Corporation Package Design Guide, a written document that works in conjunction with the Product Selection Kit containing 29 different flexible packages and a review of their structures, styles and applications; together they are an invaluable tool for any organization or individual engaged in evaluating and selecting the appropriate package for a product.

Interested in Learning More?

Custom Packaging

A hermetic seal on flexible packaging can be achieved with any of our sealing machines, this quick guide will help you choose the unit that will work best for your production needs.

How to Choose A High Barrier Bag

Not every Industrial Vacuum Sealer applies to every application. There are different models and types of Vacuum Sealers available, and each one of those sealers has different features that can affect the way a production line works.

Right Sealer for Your Setting

Not every Industrial Vacuum Sealer applies to every application. There are different models and types of Vacuum Sealers available, and each one of those sealers has different features that can affect the way a production line works.