B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 69/00 (2006.01) B29C 33/68 (2006.01) B29C 35/02 (2006.01) B29C 67/24 (2006.01) B29C 70/42 (2006.01)
Patent
CA 2196119
During the manufacture of slabs of granulated stone material and/or sands bound with a resin which can be hardened, preferably hot, and with the aid of a catalyst, in which a mixture of granulated material and/or sand and resin is deposited as a layer of uniform thickness and predetermined outline on a support protected beforehand by a sheet material, and the layer in question, which is also protected on its upper surface with a similar sheet material, is subjected to vibratory compaction under vacuum and to a hot hardening process in the presence of the catalyst, sheets of resilient material, particularly of natural or synthetic rubber, preferably neoprene, are used as the protective sheets and, after the hardening, are removed, preferably pulled, from the covered and protected surfaces of the resulting slab.
Marks & Clerk
Salvalaggio Maria Luisa
Toncelli Dario
Toncelli Luca
Toncelli Marcello
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