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Aluminum Foil Seal for Bottles

Publish: Modify: May 16, 2023Author: From:  Haomei

Aluminum foil seal for glass bottles is a safe and sanitary packaging. How to ensure its heat sealing performance? The surface cleanliness is very important. The residual amount of oil determines the quality of the surface cleanliness. Learn more.

Aluminum foil seal for glass bottles has many advantages: heat sealing aluminum foil s safer and healthier. The surface of aluminum foil is very clean, and any bacteria or microorganisms cannot grow and reproduce on the surface of aluminum foil without producing peculiar smell. Besides, aluminum foil is corrosion, oxidation and Acid hydrolysis resistant.

It has long storage period and is not affected by the climate environment. According to statistics, in European and American countries, aluminum foil products used for packaging account for 70% of their total demand.

Aluminum foil seal for glass bottles.jpg

The aluminum foil for bottle cap is widely used for the sealing of polypropylene plastic bottles. Aluminum foil seal for bottles is usually composed of varnish layer or polyethylene terephthalate (PET) film, ink, aluminum foil, polyethylene film or cast polypropylene film.

Among them, the varnish layer or polyethylene terephthalate film is the outer layer, which is used as the protective layer of the sealing film to protect the ink layer in the sealing film, and the polyethylene film or cast polypropylene film is the inner layer.

As the heat-sealing layer of the sealing film, it plays a heat-sealing role. When the aluminum foil sealing film is prepared, ink is usually applied to one side of the aluminum foil, and then the varnish layer or polyethylene terephthalate is coated on the ink layer, and the other side of the aluminum foil is laminated on the polyethylene film with an adhesive.

When the aluminum foil is composited with other substrates, the surface cleanliness has a decisive influence on the composite strength. If the surface cleanliness of the aluminum foil is poor and there is oil residue, the composite strength is relatively poor.

In the calendering process of aluminum foil, a large amount of lubricating oil is used, and the surface of the calendered aluminum foil should be cleaned with organic solvent acetone before winding, and the lubricating oil used during calendering should be cleaned.

The residual amount of oil determines the quality of the surface cleanliness. The surface cleanliness standard of aluminum foil is divided into five levels: A, B, C, D, and E. Among them, A level is the best cleanliness, almost no oil; B next, and so on.

Haomei Aluminum has a strict limitation of the rolling oil components. The residual amount of rolling oil on the surface of the aluminum foil is greatly reduced, and the heat sealing strength is increased from 7 to 10 MPa in the past to 20 to 24 MPa, and the heat sealing strength is significantly improved.

The intermediate annealing process adopts a slow temperature rise method, so that the temperature difference between the inner ring and the outer ring of the aluminum coil is small during the annealing process, which is not only conducive to the uniform volatilization of the surface rolling oil, but also ensures the uniformity of the mechanical properties of the aluminum foil roll. Welcome to leave message to inquire aluminum foil roll price.

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