Mylar bags are an essential part of cannabis packaging. Whether you’re a cannabis farmer, grower, or cultivator, knowing how to use Mylar bags is key to effective and compliant packaging. In this post, we’ll cover everything you need to know about Mylar bags for cannabis packaging, from their benefits to their best uses and more!

What are Mylar Bags

What is a Mylar bag? Many people are familiar with Mylar bags, but few know their history. The first Mylar bags were developed in the 1930s by DuPont chemist Charles Stokes. At the time, DuPont was looking for a new material that he could use to insulate wires and electrical components. Stokes stumbled upon a polyester film that had excellent insulating properties, and he eventually developed a process for mass-producing the film. 

In the 1950s, Mylar bags began to be used for food storage, and they quickly became popular due to their ability to keep food fresh for long periods of time. Today, Mylar bags are used for everything from packaging coffee to preserving artifacts, and their innovative design has made them an essential part of cannabis packaging.

Common Uses for Mylar Bags

Food Storage

Unsure what to store in Mylar bags? Mylar bags are an extremely popular option for food storage. Due to their barrier properties and resistance to environmental factors, they are able to keep perishable food items protected from contaminants and fresher for significantly longer than other types of food packaging. Mylar bags are most commonly seen in the packaging of nuts, granola, sugar, oats, coffee, and tea.

Protecting Valuables

Due to their high durability and moisture resistance, Mylar bags are a great option for protecting valuable items like documents, photographs, and collectibles. By keeping environmental factors out, they can help preserve your valuables and protect them from damage or deterioration.

Medical and Pharmaceutical Applications

Mylar bags are also commonly used in the storage and transportation of medical and pharmaceutical products and equipment. The medical and pharmaceutical industries regularly use Mylar bags to securely store sensitive materials, medicines, and medical devices like syringes that need to be kept sterile.

Cannabis Packaging

There has been an increased popularity in use of Mylar bags for the safe and secure packaging of products within the cannabis industry. They are ideal for packaging flower, edibles, waxes, or other cannabis products because of their effectiveness in maintaining product freshness and potency. Additionally, as long as consumers know how to seal Mylar bags correctly, they are great child-proof storage options.

Benefits of Using Mylar Bags for Cannabis Packaging

Cannabis packaging comes in all shapes and sizes, but the mylar bag is one of the most popular choices. Mylar bags are very popular due to these five benefits.

1. Product Freshness

Mylar bags are made of a thin film of polyester that is laminated with aluminum foil. This combination makes the bags highly impermeable to light, oxygen, and moisture. As a result, Mylar bags are excellent for preserving the freshness of cannabis products. Cannabis products can last for nearly two years without losing potency when stored correctly in mylar bags.  

2. Product Safety

Mylar bags are also very strong and impact-resistant, making them a good option for storing and transporting cannabis products. You can protect the integrity of your product by choosing this durable, flexible packaging option.

3. Smell Proof

Most cannabis products have a strong smell, and if you’ve ever tried to store such items, you know how difficult it can be to find a container that will completely seal in the odor. Even if you use a traditional plastic storage bag, the chances are good that at least some of the scent will escape. Mylar bags, on the other hand, are designed to be completely smell-proof. Made from a thin layer of metalized polyester, mylar bags create an airtight seal that prevents even the most pungent odors from escaping.

Everything You Need to Know About Mylar Bags for Cannabis Packaging

4. Tamper-Evident and Resealable

To be in full compliance with certain cannabis packaging laws, some cannabis products must be packaged in tamper-evident and/or resealable packaging. Mylar bags conform to both requirements, making them an excellent choice for many types of products.

5. Versatility

Mylar bags are available in a variety of sizes so that you can choose the right bag for your products. This packaging option is also highly customizable. At Green 420 Pack, we offer many design options, including craft paper, silver foil, gold foil, matte finish (spot gloss effect), and more specialty finishes. All of these options allow for customization of both dimensions and gussets as well. The possibilities are endless when it comes to designing custom mylar bags for your cannabis packages.

Comparison of Cannabis Packaging Options

Choosing the Right Type of Mylar Bag

Mylar bags are a versatile cannabis packaging option. The most popular uses include packaging cannabis flowers and edibles. Mylar bags are an ideal choice for products with multiple servings because the bags are resealable. If you are looking for an airtight, durable, and light-proof option for cannabis packaging, mylar bags are a great choice.

Thickness and Durability

Mylar bags come in varying thicknesses, so if you’re looking for packaging for your product that will be able to better withstand handling and storage conditions, you should consider opting for one of the thicker options. If durability is not a concern, there are thinner options available for your product as well.

Transparent vs. Opaque

If you want your product to be clearly visible to your customers, then transparent Mylar bags are definitely the way to go. If discretion or protection from light are more of a priority for your product, then opaque Mylar bags are a great option as well.

Zipper vs. Heat Seal

Customer preference and ease of use is always a factor when considering the right packaging for your product. Mylar bags are resealable and come with zipper or heat seal options depending on what your customers prefer. While zipper bags are easier to open and close, heat seal bags offer an added layer of security, given that they require more effort to open.

Tips for Maximizing Cannabis Shelf Life in Mylar Bags

Ensuring that your cannabis products stay fresh and potent is of the utmost importance. The following packaging tips can help ensure customers enjoy your product with the level of quality you intended:

  • Prioritize proper product curing before packaging. Excess moisture can lead to less than optimal products and a decreased shelf life, so be sure your cannabis is 100% ready for packaging before beginning the process.
  • Package with care and remove any excess air from your Mylar bags while packing. This will help maintain freshness and ensure that oxidation is kept to a minimum.
  • Store and transport packaged products in a cool, dark, and dry place away from direct sunlight. This will help preserve product quality and ensure customer satisfaction.


Are Mylar Bags BPA-free?

Yes! PET is the type of plastic used to make Mylar film, so they are 100% BPA free.

Can Mylar Bags be frozen?

Mylar bags are not optimal for freezing, however neither are cannabis products in general. Mylar bags preserve products best when stored in cool, dry, shaded locations.

Where can I purchase Mylar Bags?

Green 420 Pack offers a wide variety of quality Mylar bag packaging options for your cannabis products. You can browse our website to see our selection, or contact us with any questions you may have. 

How do I properly seal a Mylar Bag?

Our Mylar bags for cannabis products contain a child-proof double sealing mechanism. Air should be carefully pressed out of the bag, then the seal is pressed tightly shut for maximum freshness and security. 

Are Mylar Bags reusable?

Can you reuse Mylar bags? Yes! The resealable function of our Mylar bags make them a great option for continual use and storage. 

Are Mylar Bags odor-proof?

Yes, our Mylar bags are smell-proof and lock odors inside. Their airtight quality and resealable application ensure that odors can’t escape before or after the bag is open. These features also ensure maximum freshness.

Can Mylar Bags be customized with branding?

Absolutely. Green 420 Pack offers a wide variety of customizable options so that your brand and design are clearly seen on each bag. We understand that branding is half the battle when it comes to getting your product in the hands of consumers, so we’re here to help ensure that customization of packaging is a swift and easy process. 

Are Mylar Bags suitable for freezing edibles?

Mylar bags do not perform optimally in freezing temperatures. That being said, edibles will lose potency when frozen in just about any form of packaging. It’s better to store edibles in a dry, cool, and dark environment within our Mylar bags to ensure the longevity of their potency. 

Can Mylar Bags protect against moisture and humidity?

Definitely. Our Mylar bags are airtight and weather resistant, which helps protect your products from losing potency and quality to moisture and humidity.

Final Thoughts

Mylar bags are a great option for packaging your cannabis products. Their superior barrier properties, versatility, child-resistance, and ability to maintain product freshness and potency make them the perfect option for packaging all forms of cannabis. Green 420 Pack offers amazing customizable design options, which can help elevate your brand identity and attract more customers. Your products are grown and processed with care, why not opt for quality packaging that ensures their freshness and potency? The quality of your cannabis products deserves to be preserved.

Customize Your Cannabis Mylar Bags with Green 420 Pack

Green 420 Pack is a one-stop-shop for all your cannabis packaging needs! We offer a wide selection of mylar bags that can be customized to fit your specific product and branding. Our expert team will work with you to create the perfect bags for your business. Whether you’re looking for something sleek and simple or bold and eye-catching, we can help you create a mylar bag that reflects your brand. If you’re ready to place your order or want expert guidance on choosing the right size, material, and amount of packaging for your products, we can help. Contact us today to speak with a knowledgeable staff member about using mylar bags for cannabis packaging!