Material
2nd Step: The second step starts from material selection.Mylar packaging bags have the advantage to be smell proof, moisture barrier,sealable, printable, and flexible. It's perfect to preserve food quality. Mylar pouches are popular in food storage and packaging of marijuana dispensary products, gummy edibles, or supplements. The choice of adequate materials and their combination is crucial for bag's function.
Mylar Definition
What is mylar? To put it simple, mylar is in nature a type of plastic film that is thin and durable. It's about 12microns in thickness, usually with a thin layer of aluminum coating. Its technical name is METPET, MPET, or VMPET ( e.g. vapor metalized PET film) at the very beginning when it's invented. It has been around for nearly seventy years, since its invention in the 1950s by Dupont. Now DuPont Teijin Films have evolved to a wide variety of film options including clear, hazy and matte PET. Metallized mylar bags were then put into use as food packaging bags for MRE meal in the army. They have been proven to be practical and cost-effective over the years. Mylar bags are not made by metallised PET solely, but by laminates of several other material, such as clear PET, VMPET, kraft paper, LLDPE, or PLA. This multi-layer laminated film is flexible and can be customized to build strong and stylish barrier mylar bags.
If you are new to this field, you may be faced with so many terminologies and confused with their meaning. Below is the basic knowledge you need know to make a better material choice. It can save you from making tough decisions in constructing an odor proof mylar bags. This package is perfect for packaging weed strains, cannabis edibles, pre rolls, e vape cartridges, flour, rice, yeast, pasta, beans, cbd products, and more.
• Clear PET film (Polyester film)
Normally in thickness of 48 gauge, this clear mylar film is excellent in higher tensile strength& better moisture barrier than PP & PE film. It is easy to be metalized by aluminum, custom printed, laminated to make dispensary packaging bags or food storage mylar bags. This material is resistant to temperature change from freezer to oven.
• MPET
After metallized by aluminum, PET film have a metallic shining effect in aesthetic appeal. METPET film greatly decrease the permeability of oxygen and water vapor moisture. Having the same odor resistant property, it can be used as a high barrier component in the laminated mylar film to enhance the protection for herb freshness or cannabis quality .
• Matte PET film
Matte PET film is a bi-axially oriented polyester film that has a silk-like medium haze in the light and a less glossy appearance than traditional clear PET. It is ideal for custom printing. When used for window bag, the window is frost and foggy.
• Soft Touch PET film
Soft Touch PET film is a type of polyester film that has been specially coated to give it a matte, soft feel. This film has a minor gloss when compared to Matte PET film, but feels more gentle to the touch. In addition, Soft Touch PET film is abrasion-resistant, printable, and durable, making it an excellent choice for packaging cannabis products, snacks, or other products where a premium feel is desired. With its soft texture and ability to upscale packaging, Soft Touch PET film is a great way to elevate your brand and impress your customers.
• LLDPE ( Linear Low-Density Polyethylene)
Acting as sealable layer, LLDPE is more than a functional film. It isflexible, and can work with Clear PET to create heat seal mylar bags.
• Kraft Paper
Contrary to plastic film, kraft paper is 100% recyclable. Kraft mylar bags are lined with MPET and LLDPE. The paper/VMPET/LLDPE laminated film is sealable by a heat sealer. It retains the same protection ability while helping improve your brand identity with the natural look and hand feel.
• Eco PLA or recyclable PE
Eco PLA and recyclable PE are biodegradable. They can be used in circumstances when the custom package needn't meet a high level oxygen or moisture barrier requirements. PLA comes from renewable starch or sugar, it's compostable when being disposed of in a proper way. Bags made by recyclable PE can be recycled and reused. So it can reduce waste and pollution, and it's eco-friendly for non-food items packaging such as clothing and accessories, books, toys, etc.
• We have still more to choose from such as BOPP, VMOPP, CPP, PA, aluminum foil, etc.
Having selected the desired material components for mylar laminates, it comes to choosing their combination and thickness to make a best custom mylar bag for storing weed, water, gun, or food items.
For our customers, what mil mylar bags should be chosen for food storage? Mylar bag thickness is affected primarily by volume size, packaged product and storage length. The thicker the Mylar bag, the stronger its protection for products is. For big or extra large mylar bags, thin mylar of 3.5 mil or 4mil thick is pliable and easy to tear. To make the heavy duty mylar bags durable, people often use thick mylar material in gauge of 6 mil, 7 mil or more. (e.g. ) As regards food items with sharp or pointed edges like cracks, chips, thicker mylar bag is recommended. If customer has a specific requirement for long term storage, thick mylar bags offer better protection against the environment factors.
Smell proof Mylar bags can prevent the cannabis products or food items from coming into contact with air and moisture. This protection is achieved through mainly by mylar film with other multiple pliers. Mylar is a main barrier material because it is good to has low permeability to gases and moisture. It is also resistant to many chemicals. When using in combination with PE, PA, aluminium and resealable zipper, the bag create an air tight room to make the packaged products seclude from the outerside environment. (此处加入一个材料结构table)
Foil Mylar bags, are made from a layer of pure aluminum foil laminated between PET and PE layers,normally of 7microns in thickness. In cotrast with VMPET that the aluminium is thin and coated to PET film, foil layer provides an additional barrier against light, moisture, and oxygen, making it even more effective in preserving the quality of marijuanna products or food. Foil Mylar bags are commonly used for packaging items such as coffee, tea, free dried rices, and other products that are susceptible to oxidation and moisture.
Mylar bags is one of the most popular packaging materials used in vacuum seal packaging. People use vaccum sealer to pull air out of mylar bags. For some types of sealing machine of home use, embossed or textured mylar bag is a must. For commercial or industrial sealing machines, normal mylar bags can be used to be sealed safely.
The customizable printed Mylar bags we are discussing are made from the highest quality Mylar film. The material used in these bags is food-grade, FDA approved, and BPA free, making them safe for packaging weed products, food.