Why Composite Packaging Bags have better Insulation Performance

In the world of packaging, different bag types offer various levels of insulation performance. This article delves into a detailed comparison of four common bag types: non-woven packaging bags, woven bags, composite packaging bags, and kraft paper packaging bags. We will also introduce you to Beyin Packing, a leading manufacturer specializing in composite packaging bags.

Woven Bag:

Insulating Performance: Woven bags are typically made of polypropylene or polyethylene, offering good water resistance and durability. However, they have relatively weak insulating properties. Woven bags are not suitable for packaging products that require high moisture resistance and sealing.

Suitable Products: Woven bags are commonly used for packaging items like grains, fertilizers, and construction materials, where high insulating properties are not a primary requirement.

Non-Woven Bag:

Insulating Performance: Non-woven bags are made from fiber materials, providing good breathability and insulation against small particles and dust. However, they are not ideal for high liquid resistance.

Suitable Products: Non-woven bags are often used for packaging lightweight goods, such as clothing, gifts, and reusable shopping bags found in supermarkets.

Kraft Paper Bag:

Insulating Performance: Kraft paper bags are generally made from thick kraft paper and have limited insulating properties, as they cannot effectively insulate against moisture and oxygen.

Suitable Products: Kraft paper bags are commonly used for packaging dry solid products like flour, grains, and nuts. For products that require high insulating performance, an additional inner plastic film layer is often added to enhance insulation.

Plastic Composite Bag:

Insulating Performance: Plastic composite bags typically consist of multiple layers of different types of plastic films, offering excellent insulation against oxygen, moisture, and light.

Suitable Products: Plastic composite bags are well-suited for packaging high-insulating requirement products such as food items, pharmaceuticals, and cosmetics.

Composite packaging bags exhibit superior insulation performance compared to other types of packaging bags due to their unique construction and materials. Here are some key reasons why composite packaging bags are known for their exceptional insulation performance:

Multiple Layer Structure:

Composite packaging bags are typically constructed with multiple layers of different materials, such as plastic films, aluminum foil, and barrier coatings. These layers work together to create a highly effective barrier against external factors like oxygen, moisture, and light. The combination of various materials offers enhanced insulation properties.

Moisture and Oxygen Barrier:

The various layers in composite bags are specifically chosen for their barrier properties. They are designed to prevent the ingress of moisture and oxygen, both of which can have a detrimental impact on the quality and shelf life of packaged products. This is especially important for items like food and pharmaceuticals.

Light Blocking:

Composite bags often include layers that block out light. Light exposure can lead to degradation of certain products, such as those sensitive to UV radiation. Composite bags provide a shield against light, ensuring product integrity and longevity.


Manufacturers of composite bags can tailor the bag's structure and materials to the specific needs of the packaged product. This customization allows for precise control over the bag's insulation properties. For products with varying requirements, composite bags can be adjusted accordingly.


Composite bags are known for their excellent sealability. The materials used in these bags make it easier to create a tight, secure seal, which further enhances insulation and prevents contaminants from entering.


Composite packaging bags are suitable for a wide range of products, including food, pharmaceuticals, chemicals, and more. Their insulation performance makes them versatile and suitable for products with varying sensitivities and requirements.

Longer Shelf Life:

The exceptional insulation performance of composite bags extends the shelf life of packaged products. This is particularly crucial for businesses seeking to reduce product waste and ensure that customers receive high-quality items.

Choosing the right packaging material is crucial to protect your products. While various bag types have their strengths and weaknesses in insulation performance, composite packaging bags offered by Beyin Packing stand out as the ideal choice for products that require superior insulation against oxygen, moisture, and light. Make the smart choice to ensure the quality and longevity of your products.

For inquiries and orders of composite packaging bags, get in touch with Beyin Packing today. We are your trusted partner for top-quality packaging solutions.

Post time: Oct-20-2023