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Lithographic Sheet
Alcoa’s Lithographic Business Overview
Since the inception of offset lithography, Alcoa has been a pioneer in the use of aluminum litho plates. Alcoa’s sheet production experience and plate application research has been instrumental in the printing industry’s conversion to aluminum lithographic plate.
Alcoa is a premium quality global lithographic sheet supplier, with production facilities in USA, Europe and Asia.
With its exemplary finished sheet surface and superior flatness, excellent electro-graining response, Alcoa has developed its litho sheet extensively to meet the demanding needs of printers for the production of magazines, stamps and newspapers.
Alcoa Bohai Premium Lithographic Capability
Producing high quality lithographic aluminum sheet has traditionally been exacting, however, with the installation at Alcoa Bohai of one of the world’s most advanced hot lines, a new fully equipped cold mill, as well as the most advanced lithographic finishing line in China, Alcoa has taken the best equipment and added its technical , process control and management expertise to provide new leadership in aluminum technology .
Alcoa Bohai has unprecedented capabilities, allowing it to produce in China lithographic coil that sets new standards in quality and consistency. Producing locally in China allows Alcoa to respond quickly to its customers needs. Backed by Alcoa’s years of experience as a quality lithographic sheet supplier, along with its experts and technical centres and the Alcoa China technical team, Alcoa Bohai will be able to provide strong technical support to all its lithographic sheet customers.
The new Alcoa Bohai hotline accurately controls profile, which is the thickness variation across the strip. This insures the flatness of the finished product. Alcoa’s attention to the detail of fabricating this demanding product shows in every coil you receive.
Final cold rolling provides accurate gauge, shape, temper, flatness and surface quality. During cold rolling, precision tolerances are maintained with best thickness control technology.
The resulting uniformity of plate thickness is important to performance characteristics such as registration, plate wear and consistent ink transfer. A key factor in providing exacting flatness, one of the most important requirements of litho plate, is stretcher levelling. This procedure stretches the metal to equalize internal stresses to assure a flat product. Alcoa stretcher levellers, which can handle wide width, light gauge materials are among the finest in the world. Its advanced finishing line also has the best surface cleaning capability to provide the cleanest surface.
Alcoa provides the world’s finest gauge and flatness control and surface cleanliness end to end, edge to edge, delivering high quality litho sheet products every time.
Global and Regional Customers
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