Laminar block and method of and apparatus for producing the laminar block

Abstract From the Canadian patent

A laminar block useful as an insulating material comprising a laminar body composed of a plurality of laminated sheet-like members, each member being made of the inorganic fibers; at least one first stitching thread parts each having a first surface thread part extended along an outer surface of a sheet-like member situated at one surface side of the laminar body, a first penetrating thread part extended substantially continuously from one end of the first surface thread part so as to penetrate the laminar body in a direction of a thickness thereof and a second penetrating thread part extended substantially continuously from the other end of the first surface thread part so as to penetrate …