3-fabric layer insulation material and a method and an arrangement for producing the same

An arrangement for producing a 3-layer insulation material, the arrangement comprising an upper guide element for a first fabric layer, a lower guide element for a second fabric layer and means for guiding and fluting an intermediate fabric layer to a point where the first and second fabric layers are attached by attaching means, the first fabric layer to a first side of the fluted intermediate layer and the second fabric layer to a second side of the fluted intermediate layer, to form longitudinal bundle channels, wherein a multiplicity of guiding means is installed for introducing an insulation material separately to each longitudinal bundle channel and the attaching means are situated on both an upper and a lower side of the 3-layer insulation material, and wherein the said multiplicity of guiding means is installed at the attachment point for introducing the insulation material inside the longitudinal bundle channels simultaneously with attaching of said layers.