Process for the preparation of multilayer blocks suitable for th

Details Process for the preparation of multilayer blocks suitable for th Process for the preparation of multilayer blocks suitable for th

1988-03-23

1990-03-20

McCamish, Marion C.

Plastic and nonmetallic article shaping or treating: processes

Treatment of material by vibrating, jarring, or agitating...

By reciprocating or vibrating mold

264256, 2642974, 2642977, B28B 108, B28B 116, B28B 306

Patent

active

049099744

ABSTRACT:
A process for the production of a multi-layer block by distribution of a mixture, the block being used for the production of agglomerated slabs of marble, granite, sand or in general stone, consists of weighing a predetermined amount of the mixture, mixing it to render it homogeneous, conveying the predetermined amount of homogeneous mixture into a mold provided with a vertically movable bottom, subjecting the mixture to a vibrating action by means of a vibrating plate, then lowering said predetermined amount of the mixture of a distance equal to the thickness of a new slab, covering the mixture with a sheet of impermeable material, repeating the operations until the mold is filled. A multi-layer block is formed, which is compacted and allowed to set. The block is separated into slabs corresponding to the sheets of impermeable material. The apparatus is also described.

REFERENCES:
patent: 3270113 (1966-08-01), Logninotti
patent: 4067941 (1978-01-01), Gaudelli
patent: 4151246 (1979-04-01), Lester
patent: 4696839 (1987-09-01), Renker
patent: 4698010 (1987-10-01), Toncelli

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