METHOD OF SANDWICH CONSTRUCTION BOARDS PRODUCTION FROM SILICON-BEARING MIXES (VERSIONS) Russian patent published in 2013 - IPC B32B7/02 E04F13/14 

FIELD: process engineering.

SUBSTANCE: invention relates to construction, particularly, to production sandwich construction boards from silicon-bearing mixes. Board layers differ in mechanical properties and represent two versions. In compliance with first version, silicon-bearing mix layer with higher sintering point is sintered. Board produced by mix sintering is placed in the mould. Note here that layer of silicon-bearing mix with lower sintering point is arranged between said board and mould surface to hold both at sintering points of low-temperature layer unless monolith structure is formed. In compliance with second version, silicon-bearing mix layers with higher sintering point are sintered. Board produced by mix sintering is placed in the mould. Note here that layer of silicon-bearing mix with lower sintering point is arranged between said board and mould surface to hold both at sintering points of low-temperature layer unless monolith structure is formed.

EFFECT: expanded process performances.

2 cl