Aluminum-plastic composite bag is a common packaging material, which has excellent moisture-proof, anti-oxidation, anti-static, anti-corrosion and other properties, so it has been widely used in medicine, food, chemical and other fields. There are two main materials of aluminum-plastic composite bags, namely PET ALPE (aluminum foil bag) and VMPET PE (aluminized bag).
1. PET ALPE (aluminum foil bag).
PET AL PE is a three-layer packaging material, which is composed of three materials: PET, AL and PE. Among them, PET is a plastic material with excellent transparency and impact resistance;Al is a metal material with excellent moisture and oxidation resistancePE is a plastic material with excellent flexibility and ductility.
The advantages of PET AL PE are its excellent moisture resistance and transparency, as well as good impact resistance and flexibility. In addition, due to its simple structure and easy processing, it has been widely used in medicine, food, chemical industry and other fields.
2. VMPET PE (aluminized bag).
VMPET PE is a double-layer structure packaging material, which is composed of two materials, VMPET and PE. Among them, VMPET is a plastic material, commonly known as aluminum, which has excellent barrier properties and high temperature resistance;PE is a plastic material with excellent flexibility and ductility.
The advantage of VMPET PE is its excellent barrier performance and high temperature resistance, which can effectively protect the product from the external environment. In addition, due to its bright appearance, it also has moisture-proof and waterproof properties, and is often used in packaging such as tea.
To sum up, the two commonly used materials for aluminum-plastic composite bags are PET AL PE and VMPET PE. Different materials have different performance characteristics and application fields, so in practical applications, they need to be selected according to the characteristics and requirements of the product.
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