METHOD FOR PREPARING FIREPROOF GLASS Russian patent published in 2009 - IPC E06B5/16 

FIELD: fire safety.

SUBSTANCE: invention is relevant to construction and specifically to the preparation of fireproof glass. The method for preparing fireproof glass consists of, at the very least, two flat base sheets, made from either glass or plastic, and one introduced between the base sheets to provide fire prevention properties, including, at least one film, or system of films, with at least one expanding layer. The method is carried out in two stages: overlaying several of the film fragments of the fireproof section on the first base sheet, cover the fragments of the films over the entire surface of the base, with contiguity among the edges of the film fragments to each other or with a small overlay between them on the first base sheet, then overlay the second base sheet on the first base sheet with the fragments of film; the process is then continued by lamination using increased pressure and increased temperature. The temperature during the lamination process takes place within the scope of the thermoplasticity of the fireproofing material but at a lower temperature to that of effervescence of the fireproofing material.

EFFECT: invention for preparing fireproof pieces for glass possessing large area surfaces.

23 cl