Composite film packaging bags are two or more materials that are bonded together through a composite process and have multiple functionalities. According to the needs of different markets, they can be divided into: three side sealing bags, back sealing bags, eight side sealing bags, etc. The material combinations and uses of composite film packaging bags can be roughly divided into the following categories:
1. Material: BOPP/LLDPE two-layer composite
Features: moisture-proof, cold resistant, and strong low-temperature heat sealing force,
Uses: instant noodles, snacks, frozen Dim sum, powder packaging, etc.
2. Material: BOPP/CPP two-layer composite
Features: moisture-proof, oil resistant, high transparency, and good stiffness;
Usage: instant noodles, biscuits, candies, and various lightweight foods.
3. Material: BOPP/VMCPP composite
Features: moisture-proof, oil resistant, oxygen resistant, shading, and good stiffness
Usage: Various types of dry food, fried food, potato chips.
4. Material: BOPP/VMPET/LLDPE three-layer composite
Features: moisture-proof, oxygen resistant, and light blocking;
Usage: Various foods, rice snacks, snacks, tea leaves.
5. Material: PET/CPP two-layer composite
Features: moisture-proof, oxygen resistant, fragrance preserving, and high-temperature resistant;
Usage: Steaming and cooking, including alcoholic and flavored foods.
6. Material: PET/PET/CPP three-layer composite
Features: moisture resistance, high temperature resistance, and easy sealing;
Usage: Powder packaging, soy sauce, liquid, shampoo