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SACMI presents TwinPress, the new production process for large-scale porcelained stoneware slabs

Sacmi now offers the market an innovative new production process - a milestone for the ceramic industry - called TwinPress. This new concept stems from the convergence of two interdependent, evolutionary factors: thick-layer dry coloured powder decoration and the cutting of large unfired slabs to produce smaller tiles. Cerdisa of Maranello, Italy, is the first producer to put its faith in double pressing and will thus be the first to begin full-scale production with this innovative technology early on in 2002. TwinPress allocates the two pressing stages of large-scale tiles to two machines. A first, “lightweight” press is installed on the production line to prepare a tough semi-finished product on which decoration can then be carried out. This press can be fed with coloured powder mixes, arranged in the mould cavity to give random veining and combination patterns. The second pressing of the unfired, fully decorated slab completes the piece so that it is ready for subsequent stages (drying and firing). After pressing, the slab is cut by Mondrian, the first unfired tile cutting machine in the history of ceramics, presented by Sacmi at Ceramitec in Munich in 2000. The key advantages of TwinPress are: 1. speed (output rates are excellent for products of such high aesthetic and structural quality: 30 minutes – not 6 hours – for size-change-overs); 2. flexibility (significant product modifications can be made in just a few minutes, production can be effected in small lots; special sizes and modules – even extra-standard - can be manufactured; reduced storage space requirements, with an increasingly just in time service in terms of both quantity and types; rapid manufacture of different, modular sizes); 3. quality (high-strength bodies, an endless range of decorative motifs; shade differences between different sizes of the same product have been eliminated; environment-friendly dry-decoration technique). This innovative process developed in Sacmi’s laboratories will find its first industrial application in the new line which is going to be supplied to the Ricchetti group for the Cerdisa plant in Maranello.

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