Rolled product, method and device for the production thereof, and use of the same

Abstract

A rolled product, especially a rolled product consisting of a metallic material, such as an aluminium sheet, for using in lighting engineering as a reflector surface, the surfaces on both sides of the rolled product displaying essentially the same reflective properties. One such rolled product is especially suitable as a material for constructing a reflector or for the anti-glare shade of a louvered light fitting. The rolled product is produced by first rolling the product and then providing the two optionally differently reflecting surfaces with similar reflective properties by a polishing process following the rolling.

1 - 21 . (canceled)  
   
   
       22 . Rolled product made of a metallic material for use as a reflector material comprising a first surface and a second surface, wherein the surfaces exhibit a dispersive reflection behaviour for light, wherein the reflection behaviour of the two surfaces is substantially the same.  
   
   
       23 . Rolled product according to  claim 22 , wherein the surfaces exhibit an at least partially diffusely dispersive reflection behaviour.  
   
   
       24 . Rolled product according to  claim 22 , wherein the surfaces exhibit a substantially isotropic reflection behaviour.  
   
   
       25 . Rolled product according to  claim 22 , wherein gloss levels of the surfaces measured in different directions differ by less than 15%.  
   
   
       26 . Rolled product according to  claim 22 , wherein gloss levels of the surfaces measured in different directions differ by less than 12%.  
   
   
       27 . Rolled product according to  claim 22 , wherein gloss levels of the surfaces measured in different directions differ by less than 9%.  
   
   
       28 . Rolled product according to  claim 22 , wherein gloss levels of the surfaces measured in different directions differ by less than 6%.  
   
   
       29 . Rolled product according to  claim 22 , wherein gloss level of the surfaces is higher than 45%.  
   
   
       30 . Rolled product according to  claim 22 , wherein gloss level of the surfaces is higher than 50%.  
   
   
       31 . Rolled product according to  claim 22 , wherein gloss level of the surfaces is higher than 60%.  
   
   
       32 . Rolled product according to  claim 22 , wherein gloss level of the surfaces is higher than 70%.  
   
   
       33 . Rolled product according to  claim 29 , wherein gloss levels of the first and the second surface differ by less than 15%.  
   
   
       34 . Rolled product according to  claim 29 , wherein gloss levels of the first and the second surface differ by less than 12%.  
   
   
       35 . Rolled product according to  claim 29 , wherein gloss levels of the first and the second surface differ by less than 9%.  
   
   
       36 . Rolled product according to  claim 29 , wherein gloss levels of the first and the second surface differ by less than 6%.  
   
   
       37 . Rolled product according to  claim 24 , wherein total reflection is higher than 80%.  
   
   
       38 . Rolled product according to  claim 24 , wherein total reflection is higher than 84%.  
   
   
       39 . Rolled product according to  claim 24 , wherein total reflection is higher than 86%.  
   
   
       40 . Rolled product according to  claim 22 , wherein surfaces have a polished surface layer.  
   
   
       41 . Rolled product according to  claim 22 , wherein surfaces have a anodised surface layer.  
   
   
       42 . Rolled product according to  claim 22 , wherein at least one transparent scratch protection layer is on the surfaces.  
   
   
       43 . Rolled product according to  claim 22 , wherein at least one transparent corrosion protection layer is arranged on the surfaces.  
   
   
       44 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99% by weight aluminium.  
   
   
       45 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99.5% by weight aluminium.  
   
   
       46 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99.8% by weight aluminium.  
   
   
       47 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99.85% by weight aluminium.  
   
   
       48 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99.9% by weight aluminium.  
   
   
       49 . Rolled product according to  claim 22 , wherein the rolled product comprises aluminium or alloys thereof containing a purity of at least 99.95% by weight aluminium.  
   
   
       50 . Method for producing a rolled product according to  claim 22 , wherein the rolled product is initially rolled and then polished to obtain the desired reflection behaviour.  
   
   
       51 . Method according to  claim 50 , wherein the surfaces are initially formed with different reflection behaviour and, thereafter, at least one surface is polished such that the final surfaces have substantially the same reflection behaviour.  
   
   
       52 . Method according to  claim 50 , wherein the rolling process comprises a plurality of rolling steps and at least one cleaning step to clean the surfaces.  
   
   
       53 . Method according to  claim 52 , wherein an alkaline bath is used to clean the surfaces.  
   
   
       54 . Device for carrying out the method according to  claim 50 , comprising rollers having blasted surfaces.  
   
   
       55 . Device according to  claim 54 , wherein the rollers have surfaces which have been prepared by at least one of laser beam finishing, electron beam finishing, and electron discharge texturing.  
   
   
       56 . Device according to  claim 54 , including at least one speed synchronisation device for bringing about a substantially similar speed of the roller surfaces and the surfaces of the rolled product to be processed.