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First the moulds are made. This is all done automatically. Pre-programmed computerised mould-making in action
The key to Pirkenhammer Hotelware's strength is in the isostatic pressing. a technique not used by many tabletop manufacturers which makes our flatware, bowls and dishes much denser than other products
For the The holloware (pots and jugs), the clay is kept in liquid form in slip arcs, which are continually turned and filtered.
They are then made in a conventional method by pouring the liquid clay, or 'slip' into moulds and leaving them to dry.
Then all the pieces are fired to 1280C. This high-firing temperature allows the aluminium oxide or alumina. , which we add, to fuse the various components (quartz, feldspar, kaolin or china clay and other clays) together to create a strong 'body'. This is why the pieces are so chip resistant. It is also why they retain heat so well.
Decorations are made by first printing lithographic transfers (NB Sorry this is an over-long video. When I work out how to edit it I shall cut it short. After the first 22 seconds nothing happens)
before drying the sheets of transfers
and then applying them to the chinaware and enamel firing
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© 2008 Pirkenhammer UK