METHOD OF PRODUCING INSULATION ARTICLE, MAT FROM RUDE MINERAL COTTON AND METHOD OF ITS PRODUCTION Russian patent published in 2012 - IPC B28B1/52 C03B37/00 

FIELD: process engineering.

SUBSTANCE: proposed method comprises adding two binding substances A and B in or after fabrication of mineral cotton fibers to make the mat of rude mineral cotton. At least, one binding substance B requires heating to definite curing temperature t_B or higher while binding substance A cures or features ability of curing at t_A lower than curing temperature t_B (t_A<t_B). Mat of rude mineral cotton comprising two binding substances A and B is precured by heating it to temperature t₁ lower than curing temperature t_B of binding substance so that t_A≤t₁≤t_B. Note here that cured is solely binding substance A that cures at lower curing temperature t_A. Curing of formed insulation article containing binding substance B, not yet cured, and forming finished insulation article from mineral cotton is performed by heating it to curing temperature t_B of second binding substance or to higher temperature so that binding substance B is cured. Invention covers also mat from rude mineral cotton and method of its fabrication.

EFFECT: homogeneous finished article.

8 cl