0.022 mm temperature-tolerance decoration foil and preparation method thereof

Abstract

The invention relates to a 0.002 mm temperature-tolerance decoration foil and a preparation method thereof. The decoration foil is characterized by being made by adding 0.10-0.20 percent by weight of Cu element on the basis of 8011 alloy. The preparation method comprises the following process procedures: cold-rolling a cast-rolling plate into 0.44-0.85 mm from 6.0-10.0 mm, adopting an H22 status for interannealing, cold-rolling to 0.28-0.60 mm, foil-rolling to reach a finished thickness of 0.022 mm, and slitting, wherein the H22 status annealing process comprises the following steps: adoptinga burner-gas temperature controlling way for annealing, namely, charging below 100 DEG C, heating 1.5 hours till the temperature reaches 350-450 DEG C, and preserving the temperature for 5-15 hours; cooling for 0.5 hour till the temperature reaches 320-380 DEG C, preserving the temperature for 5-15 hours, cooling for 1.5 hours till the temperature reaches 200 DEG C, and discharging; and achievingthe total processing ratio being more than 95 percent after interannealing. The invention has good temperature tolerance and stable quality.

Description

(1) Technical field [0001] The invention relates to a 0.022mm temperature-resistant decorative foil and a preparation method thereof. The invention belongs to the technical field of aluminum foil processing. (2) Background technology [0002] In the past, in the production of decorative foil products, most of the aluminum foil manufacturers mainly produced 1100 alloy. With the expansion of the export market share of the aluminum-plastic panel industry, users have higher and higher requirements for the surface quality of aluminum foil products. In order to improve the surface quality of decorative foil , To solve the technical problems such as surface color difference and organizational stripes, the use of 8011 alloy has been effectively solved. In recent years, the competition in the aluminum-plastic panel market has become increasingly intensified, and the profit margin has become smaller and smaller. Users have higher yields for aluminum-plastic panels. The thickness of t...

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Problems solved by technology

In the past, the thinnest thickness of decorative foil produced by various aluminum foil manufacturers was 0.03mm, and it could meet the technical requirements of users for the temperature resistance of aluminum foil. However, most manufacturers have not tried to produce decorative foil with the thinnest thickness of 0.022mm. Although the aluminum foil with a thickness of 0.022mm processed by the 8011 alloy used by the previous manufacturer can still maintain its surface color uniformity and fineness, it only takes 3 to 5 seconds at the drying temperature of 220 ° C to instantly change from tensile strength to aluminum foil. The strength is 200-220Mpa and drops to 100-115Mpa, and there is an obvious phenomenon of heat softening of the material, so that the mechanical properties of the aluminum foil will be unstable and the material will become soft during the drying process of the coating, resulting in deformation and wrinkling of the aluminum foil The problem

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