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MAZERAN JEAN JACQUES
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MAZERAN JEAN JACQUES
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Priority to ES9001217ApriorityCriticalpatent/ES2024227A6/en
Publication of ES2024227A6publicationCriticalpatent/ES2024227A6/en
The present process consists in producing masses of sand having the desired shape on two faces with the aid of model plates 10, 11. After subjecting the plates to a reduction in pressure, the casing 17 hermetically closed at 40 and which contains the granular material 30 is in turn subjected to a reduction in pressure by means of the tubes 23 and 24 of the frame. Next, the plates are removed, as shown in the figure, whilst the internal reduction in pressure is maintained. The masses of sand are juxtaposed and two adjacent masses will form an impression whose free faces will make it possible to create a further two impressions with two supplementary masses of sand. n-1 impressions are thus obtained with n masses of sand.
ES9001217A1990-04-271990-04-27Device and process for manufacturing moulds using granular material
Expired - LifetimeES2024227A6
(en)
PRESSURE FOR SHAPING PLATES AND SUITABLE BY USING A FORM CUSHION, WHICH IS ENCLOSED IN A CAVITY DURING THE FORMING STAGE, FORMED BY AN UPPER AND LOWER TOOL PART OF WHICH AT LEAST ONE IS ORDERLY ARRANGED ...
Method of manufacturing a mold in the form of a multiple- impression plastic plate for reproducing intaglio printing plates and plant for implementation thereof