Method for producing aluminum alloy medicinal foil by hot-rolling method

Abstract

The invention discloses a method for producing a medical foil of aluminum alloy by hot rolling; the components mainly include 1.00 to 1.20 percent of Fe, equal to or less than 0.20 percent of Si, 0.08 to 0.12 percent of Cu, 0.25 to 0.40 percent of Mn, equal to or less then 0.03 percent of Ti, equal to or less than 0.15 percent of other impurities, equal to or less than 0.01 percent of harmful elements, equal to or less than 0.01 percent of Cd, equal to or less than 0.01 percent of As; the rest is Al; the medical foil of aluminum alloy is produced by material inspection, smelting, bath analysis, component adjusting, inducing into a furnace, refining and degassing, skimming, temperature adjusting, semi-continuous casting, surface milling, heating, crude thermal rolling, fine thermal rolling, crude cold rolling, rewinding a cut side, interstage annealing, fine cold rolling, tension leveling and washing the cut side, crude rolling by a foil roll, interstage rolling by the foil roll, folding, intestage rolling to a finished product, dividing and cutting, packaging and entering warehouse. The anti-tension intensity of the medical foil of aluminum alloy produced by the invention after passing through a high temperature oven is reduced to be above 145MPa from being equal to or more than 235MPa; besides, the plate shape of the medical foil is excellent; the rolling passes are more.

Description

technical field [0001] The invention relates to a nonferrous metal processing method, in particular to a method for producing aluminum alloy medical foil by hot rolling. Background technique [0002] Pharmaceutical foil is widely used in pharmaceutical packaging, and the market demand is great. Pharmaceutical foil is used for pharmaceutical packaging after unwinding, corona treatment, gravure printing, drying, protective layer coating, drying, adhesive layer coating, drying, slitting, and coiling. After printing, in order to cure the paint, it needs to be dried in an oven. In order to improve production efficiency, the printing production line is increased from m / min to m / min, causing the temperature of the drying oven to rise from 140-170°C to 200-230°C. At present, medicinal foil manufacturers use 8011 aluminum alloy to produce medicinal foil. The temperature resistance of medicinal foil produced by 8011 aluminum alloy is poor. After passing through a high-temperature ove...

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Problems solved by technology

[0003] The present invention solves the poor shape of the existing medical foil and the low tensile strength after passing through the oven, and when the casting and rolling method is used to produce the medicinal foil, the number of rolling passes is small, and it is not easy to produce defects in the casting and rolling plate shape. To adjust the technical problem, a method of producing aluminum alloy medicinal foil by hot rolling method is provided

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