Mylar bags, also known as Mylar foil bags, are a type of flexible packaging made from a polyester film called polyethylene terephthalate (PET). They are named after the brand name Mylar, which is a registered trademark of DuPont Teijin Films, the company that originally developed the material.
Mylar bags are known for their high tensile strength, durability, and excellent barrier properties. They are commonly used for packaging food, pharmaceuticals, electronics, and other products that require protection from moisture, oxygen, light, and external contaminants.
Here are some key features and benefits of Mylar bags:
- Barrier Protection: Mylar bags provide a strong barrier against moisture, gases, odors, and UV light. This helps to preserve the freshness, flavor, and quality of the contents.
- Extended Shelf Life: The excellent oxygen and moisture barrier properties of Mylar bags help to extend the shelf life of perishable products by preventing spoilage and degradation.
- Lightweight and Flexible: Mylar bags are lightweight and flexible, making them easy to handle, store, and transport. They can be easily folded or rolled up when empty, saving space.
- Customizable: Mylar bags can be customized with various features such as resealable zippers, tear notches, hang holes, and printed designs or labels. This allows for branding, product information, and easy opening/closing.
- Versatility: Mylar bags are available in various sizes, shapes, and thicknesses to accommodate different product requirements. They can be used for packaging dry goods, powders, snacks, spices, liquids, and more.
- Tamper-Evident: Some Mylar bags can be designed with tamper-evident features like heat-sealable closures or tear strips, providing visual indications of tampering or opening.
- Eco-Friendly Options: Some Mylar bags are available in eco-friendly versions, made from recycled materials or with reduced environmental impact.
Mylar bags are popular among individuals who engage in food storage, camping, emergency preparedness, or packaging of small-scale products. However, it's important to note that the term "Mylar" is sometimes used generically to refer to any polyester film-based packaging, regardless of the specific brand or manufacturer.