Durable Three Layer Composite Bags Manufacturer Composite Fertilizer Pouches

Durable Three Layer Composite Bags Manufacturer Composite Fertilizer Pouches

Composite packaging bags are packaging materials with multiple functions, made by combining two or more materials through composite processes. The following is a relevant introduction:

Structure and Materials

- Outer layer: Materials such as polyester (PET) and nylon (PA) are often used, providing good printability, wear resistance and mechanical strength.

- Middle layer: Mostly aluminum foil (AL), polyethylene (PE), polypropylene (PP), EVOH (ethylene-vinyl alcohol co polymer), etc., which play the role of barrier (moisture-proof, oxygen-proof, etc.), aroma preservation and strength enhancement.

- Inner layer: Generally made of polyethylene (PE), polypropylene (PP), etc., which have good heat-sealing performance to ensure the sealing of the bag mouth.

Types

- Flexible freight bags: A type of large-volume transport packaging bag, with a loading weight of 15kg. They are mostly made of polyester fibers such as polypropylene and polyethylene, and are suitable for shipping granular and powdery items.

- General transport packaging bags: The loading weight ranges from 0.5 to 10 kg. Most of them are fabric bags woven from plant fibers or synthetic resin fibers, or multi-layer material packaging bags composed of several layers of flexible materials. They are mainly used to package powdery, granular and small individual items.

- Small packaging bags: They hold a small weight, usually made of single-layer or double-layer materials. For some with special requirements, they can also be made of multiple layers of different composite materials. They have a wide range of packaging applications, including liquids, powders, blocks and special-shaped objects.

Characteristics

- Good barrier property: It can effectively prevent the penetration of oxygen, moisture and light, and extend the shelf life of products.

- High mechanical strength: The combination of materials gives it high tensile strength and tear resistance, which can effectively protect the internal products during transportation and storage.

- Lightweight: It is lighter than traditional packaging materials, which can reduce transportation costs and energy consumption.

- Customizability: It can be customized in size, shape, printed patterns, etc. according to customer needs to meet the packaging requirements of different products.

- Environmental friendliness: Many composite packaging bags use recyclable or degradable materials, which meet the requirements of sustainable development.

Application Fields

Widely used in packaging fields such as food, medicine, cosmetics and industrial products, such as packaging snacks, beverages, medicines, cosmetics, electronic products, chemical products, etc.