Rare earth aluminum-manganese alloy sterilization foil for fresh steaming brick of pet food package and production technology thereof

Abstract

The invention discloses rare earth aluminum-manganese alloy sterilization foil for a fresh steaming brick of a pet food package. The foil comprises the following raw materials of, by mass percentage,less than or equal to 0.3% of Si, less than or equal to 0.6% of Fe, 0.12-0.18% of Cu, 1.1-1.4% of Mn, 0.10-0.25% of La, less than or equal to 0.01% of Mg, less than or equal to 0.03% of Zn, less thanor equal to 0.05% of Ti, less than or equal to 0.01% of P, less than or equal to 0.03% of Li, and the balance Al. The foil is obtained through cast-rolled coil production, rolling in a cold rolling mill, a foil rolling process, a finished product cutting process, a finished product annealing process and an inspection and packaging process. The rare earth aluminum-manganese alloy sterilization foilfor the fresh steaming brick of the pet food package has the advantages of uniform structure, flatness, no wave, consistent foil surface color and high heat resistance, heat conduction, flexibility,corrosion resistance and air tightness of the aluminum foil completely meet the requirements of the sterilization aluminum foil for the fresh steaming brick of the pet food package.

Description

technical field [0001] The invention belongs to the technical field of pet food, and more specifically relates to a rare-earth aluminum-manganese alloy sterilizing foil for steaming bricks used in pet food packaging and a production process thereof. Background technique [0002] The packaging material of steamed fresh package is based on paper, polyethylene and aluminum foil. It is a composite packaging material formed from the inside to the outside according to 6 layers of PE / aluminum foil / PE / cardboard / PE / PE printing layer. Among them : Paper accounts for 75%, its main function is to ensure the strength and good formability of packaging materials, polyethylene accounts for 20%, its main function is to ensure that packaging materials are tightly compounded, and it also plays a role in isolating bacteria to a certain extent, while aluminum foil As a high barrier material, it can play a good barrier effect on oxygen, moisture, light and various rays. It is a functional materia...

AI Technical Summary

Problems solved by technology

However, the aluminum alloy contains high manganese. If it is produced by continuous casting and rolling, the range of the two-phase region composed of solid phase and liquid phase will increase during the casting and rolling process of the strip billet, so that the aluminum-manganese alloy should be in the casting and rolling process. It is very difficult to complete the crystallization and rolling within 2 to 3 seconds in the casting and rolling area of ​​about 5~6cm

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