Extrusion coated composite film
DATE：2019/7/12 10:20:49 / READ： / SOURCE：This station
Extrusion coated composite film
1 Overview
The extrusion-coated composite film is obtained by extruding a thermoplastic resin such as polyethylene or polypropylene, uniformly flowing out from the T-type handpiece, continuously coating on a substrate such as biaxially oriented polypropylene, passing through a rubber roller and cooling. The roll is pressurized and cooled to form a composite film of two or more layers, such as a BOPP (printing) / PE composite film. At this time, from the viewpoint of the adhesion of the substrate surface to the molten resin, a primer is also applied to improve the bonding strength, and the composite film combines the properties of various substrates and plastics, and can be adapted to the requirements of the product packaging. Choose the appropriate substrate and resin, such as cellophane printing, high gas barrier, good fragrance, excellent stiffness, no static, high transparency, but poor moisture resistance, no heat sealing; and polyethylene is good moisture resistance , heat-sealed, composite film, absorb the advantages of both, good gas barrier, good moisture resistance, good mechanical properties, firm, fragrance
Good, high transparency, printable and heat-sealable film for high-grade confectionery, snacks, condiments, powdered beverages, pharmaceutical packaging.
The extrusion-coated composite film has a high production speed and a complicated production process; compared with the dry method, the cost is low, and the product use is suitable for various product packaging.
For extrusion coating composites with low extrusion precision requirements, such as composite packaging woven bags, paper, cloth, metal foil, synthetic material substrate OPP, OPET, etc., China can manufacture itself. The equipment with high precision requirements is mostly imported from abroad.
The types of extrusion-coated composite films currently produced in China are mainly composed of two layers, such as paper/PE, PET, PE, AL/PE, AL-VM-PET/PE; multi-layer extrusion coating composite film PET/PE/EVA, PET/PE/AL/PE, for packaging products with high fragrance requirements; PE/paper/AL/IO/PE as aseptic filling beverage material, with the characteristics of preservation at room temperature.
1 Overview
The extrusion-coated composite film is obtained by extruding a thermoplastic resin such as polyethylene or polypropylene, uniformly flowing out from the T-type handpiece, continuously coating on a substrate such as biaxially oriented polypropylene, passing through a rubber roller and cooling. The roll is pressurized and cooled to form a composite film of two or more layers, such as a BOPP (printing) / PE composite film. At this time, from the viewpoint of the adhesion of the substrate surface to the molten resin, a primer is also applied to improve the bonding strength, and the composite film combines the properties of various substrates and plastics, and can be adapted to the requirements of the product packaging. Choose the appropriate substrate and resin, such as cellophane printing, high gas barrier, good fragrance, excellent stiffness, no static, high transparency, but poor moisture resistance, no heat sealing; and polyethylene is good moisture resistance , heat-sealed, composite film, absorb the advantages of both, good gas barrier, good moisture resistance, good mechanical properties, firm, fragrance
Good, high transparency, printable and heat-sealable film for high-grade confectionery, snacks, condiments, powdered beverages, pharmaceutical packaging.
The extrusion-coated composite film has a high production speed and a complicated production process; compared with the dry method, the cost is low, and the product use is suitable for various product packaging.
For extrusion coating composites with low extrusion precision requirements, such as composite packaging woven bags, paper, cloth, metal foil, synthetic material substrate OPP, OPET, etc., China can manufacture itself. The equipment with high precision requirements is mostly imported from abroad.
The types of extrusion-coated composite films currently produced in China are mainly composed of two layers, such as paper/PE, PET, PE, AL/PE, AL-VM-PET/PE; multi-layer extrusion coating composite film PET/PE/EVA, PET/PE/AL/PE, for packaging products with high fragrance requirements; PE/paper/AL/IO/PE as aseptic filling beverage material, with the characteristics of preservation at room temperature.
Author：admin