English
1. Product introduction
Seven-layer co-extruded stretch film is a kind of high barrier film made by multi-layer co-extrusion technology. It is usually composed of a variety of materials, including metallocene, polypropylene and polyethylene, which are formed by a special co-extrusion process to form a seven-layer structure. Such a design not only enhances the physical properties of the film, but also improves its barrier ability to oxygen, moisture and odor, thus extending the shelf life of the packaged material.
2. Main features
High barrier property: The multi-layer structure of the seven-layer co-extruded stretch film effectively improves the barrier property of the film to gas and water. The intermediate layer is usually a high barrier material, such as EVOH (ethylene-vinyl alcohol copolymer), which can significantly reduce the transmission rate of oxygen and water vapor, maintain the stability of the packaging environment, and extend the shelf life of the product.
Excellent mechanical properties: The film has excellent tensile strength and puncture resistance, can withstand various stresses during transportation and storage, and effectively prevent packaging damage. In addition, the seven-layer co-extruded stretch film also has good softness and elasticity, which is convenient for the use of automatic packaging equipment and improves packaging efficiency.
High transparency: The seven-layer co-extruded stretch film has extremely high transparency, making the packaged product clearly visible, not only improving the display effect of the product, but also convenient monitoring and management of inventory. At the same time, high transparency also helps consumers intuitively understand the details and quality of the product.
Environmental protection characteristics: The materials of the seven-layer co-extruded stretch film meet environmental protection requirements, can be recycled, and reduce the impact on the environment. In addition, due to its excellent barrier properties, the use of plastic materials can be reduced, further reducing the carbon footprint.
3. Application field
Seven-layer co-extruded stretch film is widely used in many fields such as food, medicine, chemical and electronic products, providing customers with efficient and reliable packaging solutions.
Food industry: In the food industry, seven-layer co-extruded stretch film is commonly used to package meat, cheese, poultry eggs and other foods requiring high barrier packaging. Its excellent barrier properties can effectively prevent the infiltration of oxygen and moisture, extend the freshness and shelf life of food.
Pharmaceutical industry: Pharmaceutical products have extremely strict requirements for packaging, and the high barrier property and chemical stability of seven-layer co-extruded stretch film make it an ideal choice for pharmaceutical packaging. It can not only protect the drug from external contamination, but also ensure the stability of the drug during the effective period.
Chemical industry: In the packaging of chemical products, the strong barrier properties of seven-layer co-extruded stretch film can prevent the volatilization and leakage of chemicals, ensuring the safety of transportation and storage processes. At the same time, it also has good corrosion resistance and is suitable for the packaging needs of various chemicals.
Electronic products: Electronic products have high requirements for moisture and dust protection, and the excellent performance of seven-layer co-extruded stretch film can provide comprehensive protection to ensure the safety and reliability of electronic products during transportation and storage.
4. FAQ
What is a seven-layer co-extruded stretch film?
Seven-layer co-extruded stretch film is a highly barrier film manufactured by multi-layer co-extrusion technology, usually consisting of seven different material layers to provide excellent mechanical and barrier properties.
What are the main materials of seven-layer co-extruded stretch film?
The main materials include metallocene, polypropylene (PP), polyethylene (PE) and ethylene-vinyl alcohol copolymer (EVOH).
What are the advantages of seven-layer co-extruded stretch film?
Its advantages include high barrier properties, excellent mechanical properties, high transparency and environmental protection.
Which industries is the seven-layer co-extruded stretch film suitable for?
Widely used in food, medicine, chemical and electronic products and other industries.
What is the role of seven-layer co-extruded stretch film in the pharmaceutical industry?
Provide high barrier and chemical stability, protect the drug from external contamination, ensure the stability of the drug.
What are the precautions in manual packaging operation?
Pay attention to film tension control, avoid too tight or too loose, use the appropriate cutting tools to ensure smooth and neat incision.
How to ensure the safety of seven-layer co-extruded stretch film?
Avoid direct contact between the film and sharp objects, and operators should wear protective gloves and masks.
What are the environmental characteristics of the seven-layer co-extruded stretch film?
The material can be recycled to reduce the impact on the environment, while the use of plastic materials can be reduced due to excellent barrier properties.
What is the tensile strength of the seven-layer co-extruded stretch film?
With excellent tensile strength and puncture resistance, it can withstand various stresses during transportation and storage.
How transparent is the seven-layer co-extruded stretch film?
It has high transparency, making the packaged products clearly visible and improving the product display effect.
