Patent ID: 7892464
Filing Date: 2011-02-22
Classification: C04B

Abstract:
1. A method for manufacturing articles in the form of slabs, the method comprising the steps of: (a) preparing an initial mix, the initial mix consisting of a granulate of a selected and predefined grain size and a binder, wherein (b) depositing the initial mix as a layer of predetermined thickness temporary support or inside a mold; (c) vacuum vibro-compacting the layer under a predefined vacuum and a predetermined compaction pressure accompanied by a vibratory movement of a predetermined frequency to form a rough-formed article, wherein vacuum, vibration, and compaction are performed simultaneously; (d) hardening and curing the rough-formed article and binding the water that was added in the aqueous dispersion in the article; and (e) heating the rough-formed article to 90-120° C. for 5-24 hours and complete filming of the polymer and cross-linking thereof; wherein step (d) is performed by enclosing said rough-formed article inside a casing of plastic material impermeable to water vapor.