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What is a Mylar bag? Mylar bag is a packaging solution used to pack and present different products such as electronics, food, and medical items. These bags are made from biaxially oriented polyethylene terephthalate (BoPET). Moisture-resistant and durable packaging bags to safeguard products from odors, air, and light. 

3 types of Mylar Bags

What is Mylar?

Mylar is a popular polyester film which was trademarked by DuPont during the 1950s. This packaging material achieves a minimal thickness and grid-life dimensions due to the expansion of the PET (Polyethylene Terephthalate). Mylar or BoPET is crystallized by processing the material in a high-temperature oven.  

Mylar material has become strong without turning back to its original form, ensuring ideal transparency and resistance to higher temperatures. The thin and smooth surface of the polyester film offers the easiest handling through the addition of microscopic inert inorganic particles.

The incorporation of metals like gold and aluminum to metalize the BoPET ensures a thin layer on the surface. Vapor-metalized PET minimizes the prominence of gases while reflecting 99% of light. It is important to consider that an aluminized BoPET promotes shining. This aluminum mylar ensures excellent sealability while ensuring ideal resistance to punctures.

Applications of Mylar Bags in Different Industries

Mylar bags are used in different industries to protect different products, some common examples are given below:

Food Preservation:
Ideal for long-term storage of dried goods like grains and snacks.

Cannabis Packaging:
Ensures cannabis quality by blocking light and moisture effectively.

Cosmetics Packaging:
Protects beauty products from contamination and extends shelf life.

Edibles Packaging:
Keeps edibles fresh and maintains flavor with airtight protection.

Pharmaceutical Packaging:
Protects medicines and supplements from environmental damage, ensuring potency.

Key Features of Mylar Packaging Bags

Mylar vs vacuum bags are better due to light-blocking properties. The features make bags perfect for different products while ensuring convenience and safety. Let’s take a look at crucial features:

  • Excellent Barrier Characteristics: Ensure excellent product protection against moisture, oxygen, and light.
  • Durability: Protective and custom shape mylar bags ensure excellent safety against the tear and puncture during storage and shipping. 
  • Airtight Seal: Safeguard products from their environmental factors such as bacteria, dust, and air.
  • Tamper-Evident: Additional layer of protection for products.
  • Reflective Surface: Mylar foil bags maintain product integrity through preservation from the temperature and light.
  • Lightweight: Ensure the easiest handling and affordable shipping of products.
  • Versatility: Customizable in different shapes and sizes to cater to different products.
  • Long-Term Storage: Extend the shelf life of products by incorporating oxygen absorbers.
  • Safe and Non-Toxic Packaging: Crafted from food-safe material to secure products from harmful chemicals. 
  • Cost-Effective: Affordable vacuum seal Mylar bags for businesses.
  • Eco-Friendly Packaging: Recyclable and reusable packaging bags.

Customizable Heat Resistant Bags for Food

You can store food in mylar bags, which ensure ideal protection while extending shelf life.

Dry Food

  • Bean
  • Coffee
  • Rice
  • Whole Wheat

Food with Least Moisture

  • Flour
  • Jerky
  • Pet Food
  • Seeds
  • Chips
  • Herbs

Low-Fat Food:

  • Cake mixes
  • Coconut
  • Spices

Lifetime of Food Products in Mylar Bags

It is crucial to maintain a temperature of 40-60 degrees F to ensure this lifetime of products.

Products Lifespan
Brown rice, butter, candy, chips, chocolate, nuts  <1 Year
Dry cookies, yeast, and beef jerky 1-3 Years
Baby milk, powdered milk, and maize flour 3-5 Years
Wheat flakes, granola, and gluten 5-10 Years
Buckwheat, chickpeas, and flax 10-20 Years
Sugar, salt, coffee, and potato flakes 20-30 Years

It means sugar lasts in mylar bags for 20 to 30 years while meat in mylar bags lasts only 1 to 3 years.

Consideration for Food Storage in Custom Mylar Bags

The importance of packaging can’t be neglected, but you have to consider the following factors:

  1. A product with more than 10% moisture must be placed in the Mylar bags.
  2. Boil the products if they contain more than 35% moisture, causing botulism.
  3. Store dehydrated vegetables and fruits.
  4. Extended periods can destroy nuts, meat, and milk. 

How to Store Food in Mylar Packaging

You need to consider the following factors when considering mylar vaccum seal bags.

  • Choose ideal mylar bag sizes for different products.
  • Consider the ideal packing of items.
  • Focus on standard Mylar bag thicknesses to fill food ideally.
  • The flexibility of storing food products in a thinner bag. 

Benefits of Using Mylar Packaging Bags

Benefits of Using Mylar Packaging Bags

Mylar bags are used to store food products, maintaining their freshness and flavor for a longer time. These uncolored and colored Mylar bags offer numerous benefits to food businesses.

Extend Shelf Life

The durability of Mylar bags extends the lifetime of different products. These bags can maintain the freshness of food items for years and even decades.

Prevent Gas Penetration

The bags are designed to ensure excellent resistance to gases, including oxygen. You can use these bags to preserve the flavor of food items through the ideal protection.

Excellent Child Resistance

This packaging is not totally child-resistant, but it ensures that children cannot open the bags unintentionally. The addition of a push-close zipper restricts children from opening the bag.

Branding Opportunity

Mylar bags feature branding elements such as a brand name, tagline, and logo to promote business to a larger audience. As a result, you can use Mylar bags for the branding purpose of your business, which helps to increase your brand visibility by offering brand identity packaging.

Eco-Friendliness

These sustainable bags made from recyclable materials maintain an eco-friendly environment while engaging environmentally conscious customers.

Different Thicknesses of Mylar Bags

The thickness of the mylar bags is measured in mils or gauge, which helps manufacturers to measure their cost as well. These heat-sealed mylar bags are available in various thicknesses, such as: 2 mils to 10 mils

Mylar Vs Plastic Bags: The Short Difference

Mylar bags and plastic bags are two types of packaging bags that are used to pack various food items and other retail items with utmost protection. Here are some key differences:

  • Mylar bags are thicker than the common plastic bags.
  • These bags are more suitable for storing food items for a long time as compared to plastic bags.
  • These bags are more expensive than plastic bags.
  • Mylar bags can help brands promote their products and guide customers.
  • Mylar bags are used to pack items for long-term storage, while plastic bags are used for short-term storage.


For detail information, you can read our complete blog: Mylar Bags vs Plastic Bags

Industries That Can Benefit From Mylar Bags

Mylar bags are versatile packaging solutions, helping various industries to meet their product packaging needs in a suitable, safe, and professional manner.

  • Cannabis Industry
  • Food
  • Cosmetics
  • Electronics
  • Tobacco
  • And Beverage Brands

Are Mylar Bags Suitable To Store Food Items For A Long Time?

Custom mylar bags are more popular in the food industry due to their moisture, heat, oxygen, and pest-resistant features. These bags are designed with various strong and protective seals to prevent the contamination of various food items, including tea, coffee, supplements, flour, gummies, chocolates, candies, and other food items.

Whether its showcase on the shelves or the shipping of food items, mylar bags are right storage options to keep food fresh and tasty for end-users, helping brands to deliver the promised quality to their potential customers.

How to Seal Mylar Bags

For sealing of mylar bags, you need one of the following tools:

  1. Heat sealer
  2. Vacuum sealer

The vacuum sealer removes air from a bag. You must make sure that the bag is reinforced with nylon, as in the case of Mylar bags with a vacuum sealer. Different heat sealers, such as semi-automatic band sealers, foot pedal sealers, and impulse sealers, seal the bags perfectly to extend shelf life. 

Read more: How to Seal Mylar Bags for food Storage

Purchase High-Quality Mylar Packaging Bags

Do you want to extend the shelf life of different products cost-effectively while maintaining environmental sustainability? We create eco-friendly and unique Mylar packaging to extend the shelf life of different products. Let’s partner with The Box Zila to create the durable and premium Mylar bags to protect and present your products to potential customers.

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Marilyn Cox

Hello, I'm Marilyn Cox, a seasoned packaging consultant and designer. With a professional journey spanning over four years, I've evolved from a budding designer to a recognized expert in the field. Currently holding the position of Packaging Consultant, I've honed my skills in creating not just visually stunning packaging but also solutions that align with strategic business goals.