Mineral wool insulation product, raw mineral wool carpet and methods for their production

摘要

One object of the invention is a method for manufacturing an insulation product article of mineral wool. In the method two binders A and B are added to the mineral wool in connection with and/or after the formation of mineral wool fibers making up a raw mineral wool mat, whereof at least the binder B, in order to become cured, requires heating to the specific curing temperature t B thereof or higher, and that the binder A cures or is capable of being cured at a temperature t A , which is lower than the curing temperature t B (t A t B ), the raw mineral wool mat, containing two binders A and B, is pre-cured by heating it to a temperature t 1 which is lower than the curing temperature t B of the binder B, such that t A ‰¤ t 1 t B , whereby the binder A, which is capable of being cured at the lower curing temperature t A , is the only one to become cured, and the curing of a shaped insulation product article, still containing uncured binder B, into a finished insulation product article of mineral wool is performed by heating the same to the curing temperature t B of the binder B or higher, such that the binder B becomes cured. The invention relates also to an insulation product article of mineral wool, as well as to a raw mineral wool mat, which mainly consists of layered mineral wool fibers and lends itself to the manufacture of mineral wool products, especially shaped insulation product articles.