printing plate aluminum sheet/aluminum sheet printing technology

Unlimited number aluminum sheet used once as printing plates .

Aluminum sheet has been gaining ground for a long time among the metal-based plates over zinc and steel. The necessary graining of the aluminum surface is done mechanically either by sand-blasting, ball graining, or by wet or dry brushing. Nowadays, practically all printing plates are grained in an electrolytic process (anodizing), that is, electrochemical graining with subsequent oxidation.

Aluminum printing plates are used in offset printing of books, newspapers, fliers and other print media. These thin metal plates are etched with the image or text to be printed, inked and used to indirectly transfer that ink to the paper. These aluminum hot rolled plates cannot be re-etched. They must be melted down to make new plates or used for other purposes after printing has been completed. Some applications, such as newspaper printing, produce huge numbers of waste plates.

Grade for printing plate aluminum sheet:

1) 1000 Series: 1050 1060 1070 1100 1200 1235 etc.

2) 2000 Series: 2014 2024 etc.

3) 3000 Series: 3003 3004 3005 3104 3105 3A21 etc.

4) 4000 Series: 4045 4047 4343 etc.

5) 5000 Series: 5005 5052 5083 5086 5154 5182 5251 5454 5754 5A06 etc.

6) 6000 Series: 6061 6063 6082 6A02 etc.

7) 7000 Series: 7005 7075 etc.

8) 8000 Series: 8006 8011 8079 etc.

Thickness: 0.20mm-350mm

Width: 8mm-2400mm

The printing plate aluminum sheet used in offset printing are thin (up to about 0.3 mm), and easy to mount on the plate cylinder, and they mostly have a mono-metal (aluminum) or, less often, multimetal, plastic or paper construction.