Hydro Aluminium Rolled Products Gmbh

Hydro Aluminium Deutschland Gmbh

Speira Gmbh

Jochen Schwarz

Bernhard Kernig

Kathrin Eckhard

Andreas Siemen

Hartmut Janssen

Dieter Bögershausen

Axel Blecher

Boris Kasper

Günter Schubert

Antonio Mateo

Raimund Sicking

Gunter Schubert

Olaf GÜSSGEN

The invention relates to an aluminum alloy strip with improved surface optics, which is fabricated via hot and/or cold rolling, and consists of a type AA 3xxx, AA 5xxx, AA 6xxx or AA 8xxx aluminum alloy. The object of proposing an aluminum alloy strip that is suitable for attractive and precious surface optics despite the elevated percentage of alloy constituents is achieved in that, after degreasing, the finish-rolled aluminum alloy strip exhibits an increase in the luminance value L*(&#x394;L) in relation to the rolled-greasy state of more than 5 while measuring the color of the surface in the CIE L*a*b* color space using a standard illuminant D65 and a normal observation angle of 10&#xb0;, excluding direct reflection in 45&#xb0;/0&#xb0; geometry.

Aluminum alloy strip with improved surface appearance

The invention relates to a method for producing a coated aluminum strip, in which the aluminum strip is unwound from a coil and fed into a unilateral or bilateral extrusion coating arrangement, the aluminum strip is extrusion coated with a thermoplastic polymer and after being extrusion coated, the aluminum strip is reheated to a metal temperature above the melting point of the thermoplastic polymer. The object of providing a method for producing an aluminum strip by which an extrusion-coated aluminum strip can be produced which can be processed at high processing speeds in follow-on composite tools is achieved in that the unilateral or bilateral plastics material coating of the aluminum strip is textured, after being reheated, using rolls which have a superficial structure.

Extrusion-coated strip for rigid packagings

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Wassenberg, Germany

Jochen Schwarz