Abstract: A system for simultaneously controlling a plurality of PM AC motors includes a single VFD operatively connected to a power source. The single VFD is programmable to have predetermined operating conditions. The plurality of PM AC motors is operatively connected to the single VFD. Each PM AC motor is free of a built-in VFD. Each PM AC motor is operated in accordance with the operating conditions of the single VFD.

Abstract: A composite panel comprising a first composite skin having a first fabric layer positioned between a first Kraft paper layer and a second Kraft paper layer; a second composite skin having a second fabric layer positioned between a third Kraft paper layer and a fourth Kraft paper layer; a foam core bonded to the first composite skin and to the second composite skin; and a binding composition applied to the first fabric layer and to the second fabric layer and penetrating the second Kraft paper layer and the third Kraft paper layer so that the first composite skin is bonded to a first surface of the foam core and the second composite skin is bonded to a second surface of the foam core.

Abstract: A system for simultaneously controlling a plurality of PM AC motors includes a single VFD operatively connected to a power source. The single VFD is programmable to have predetermined operating conditions. The plurality of PM AC motors is operatively connected to the single VFD. Each PM AC motor is free of a built-in VFD. Each PM AC motor is operated in accordance with the operating conditions of the single VFD.

Abstract: An impregnator for impregnating a fabric layer comprising: a chamber, the chamber being structured and arranged so as to retain a binding composition in a fluid state; a first opening being structured and arranged so as to allow the fabric layer entering the chamber in a dry state from a top portion of the chamber to be dived into the binding composition; and a second opening extending along the longitudinal axis of a bottom portion of the chamber, the second opening being structured and arranged to allow the fabric layer to exit from the bottom portion of the chamber in an impregnated state, the second opening comprising a first lip structured and arranged to be in contact with a first surface of the fabric layer and a second lip structured and arranged to be in contact with a second surface of the fabric layer.

Abstract: A method for manufacturing a composite material, the method comprising: positioning a first fabric layer between a first Kraft paper layer and a second Kraft paper layer; impregnating the first fabric layer with a binding composition while maintaining the first Kraft paper layer and the second Kraft paper layer dry; assembling the impregnated first fabric layer, the first Kraft paper layer and the second Kraft paper layer together to form a first pre-impregnated multilayer assembly; applying pressure on the first pre-impregnated multilayer assembly to diffuse the binding composition from the first fabric layer to the first Kraft paper layer and the second Kraft paper layer; and curing the first pre-impregnated multilayer assembly.

Abstract: A composite panel comprising a first composite skin having a first fabric layer positioned between a first Kraft paper layer and a second Kraft paper layer; a second composite skin having a second fabric layer positioned between a third Kraft paper layer and a fourth Kraft paper layer; a foam core bonded to the first composite skin and to the second composite skin; and a binding composition applied to the first fabric layer and to the second fabric layer and penetrating the second Kraft paper layer and the third Kraft paper layer so that the first composite skin is bonded to a first surface of the foam core and the second composite skin is bonded to a second surface of the foam core, the binding composition being a bio resin.

Abstract: A rigid composite panel 10 for insulating an installation such as a furnace or cooler (HVAC units). The panel 10 has a thermally insulating core 20, at least two laminate assemblies 30 which are bonded to the core 20 thus forming a sandwich, and an edge band 40 adhesively applied to the edges of the sandwich 50 so as to provide a smooth, continuous, and impermeable seal around said edges. There is also claimed a method for manufacturing a rigid composite panel 10 having an edge band 40, each laminate assembly being pretreated by plasma before the edge band 40 is bonded to the panel 10. Each laminate assembly 30 consists of a thin layer of polymer 38, as well as sheets 36 bonded to the surfaces of the layer 38.