What is Polyethylene (PE) in Mylar Bag Packaging?

Many people often wonder what are mylar bags made of. Mylar bags are made of multiple layers including polyester film (PET), aluminum foil or metallized film, and polyethylene (PE) inner sealant layer. It's a food grade sealant layer. 

When mylar bag is heat sealed, it is the PE lining that melts and fuses together. It creates a strong, airtight, and leak proof barrier that keeps the products safe from external factors. 

In this piece, we’ll discuss the role of Polyethylene (PE) in Mylar packaging.

Why is Polyethylene (PE) Used in Mylar Bags?

Let’s be real, polyethylene (PE) is not simply a plastic film that you mostly find in Mylar packaging. This film is used for its specific properties. Let’s discuss them in detail:

• It is not like a polyester (PET) exterior or the aluminum core. PE tends to melt easily at lower temperatures. This allows the bag to be closed securely. It does not damage the outer tough layers of Mylar bags. 

• PE is naturally waterproof and non reactive. This means it helps keep products safe from humidity and outside air. It seals the aromas and freshness inside the bag. 

• PE is safe for direct food contact as it is FDA compliant and does not leach harmful chemicals into your stored products. 

What Are the Different Types of Polyethylene Used

Printing and packaging manufacturers use different types of polyethylene depending on the required durability and flexibility of the bag. The following are the different types of polyethylene:

1. High Density Polyethylene (HDPE): This is famous for its rigidity and durability.

2. Low-Density Polyethylene (LDPE): It is mostly used for its flexibility and excellent moisture resistance properties. 

3. Linear Low-Density Polyethylene (LLDPE): It is more durable and provides excellent puncture resistance and flexibility. 

Benefits of Using Polyethylene Bags

Let’s explore the amazing benefits of using polyethylene bags:

• They provide superior product protection from moisture, oxygen, and light. They help prevent product contamination.

• Polyethylene bags are lightweight and cost effective. They significantly reduce shipping costs and material expanses.

• Polyethylene bags support customization. That means they can be printed with branding elements and tamper evident features. 

Final Thoughts

In Mylar bags, Polyethylene (PE) is the inner food grade plastic layer that touches your product directly. Polyethylene (PE) serves a robust heat sealable surface. This strong heat sealable surface creates an airtight seal that protects your delicate products oxygen, moisture, and oxygen. It also offers a leak proof seal ensuring your product is safe. 

Businesses can order polyethylene supported Mylar bags in bulk. Reach out to Print247 for customizable flexible packaging solutions at affordable rates. Deliver excellence and accomplish your packaging goals.