초록 ▼

An insulation member (1) based on non-woven material, wherein In order to provide the insulation member based on non-woven it material, which is distinguished by fulfilling one or more requirements such as a high level of sound absorption and sound damping, high heat insulation and low formation of

An insulation member (1) based on non-woven material, wherein In order to provide the insulation member based on non-woven it material, which is distinguished by fulfilling one or more requirements such as a high level of sound absorption and sound damping, high heat insulation and low formation of liquid water at high temperature gradients and high humidity gradients, a layered construction is provided from different non-woven materials such as padding-type (fleece) non-woven material or melt-extruded non-woven spun material.

대표청구항 ▼

1. Insulation member comprising in order a thermoplastic film outer layer (2), a melt-extruded non-woven spun material layer (3), a fleece non-woven material layer (4), a melt-extruded non-woven spun material layer (5), a thermoplastic film outer layer (2') wherein the weight of the non-woven layers

1. Insulation member comprising in order a thermoplastic film outer layer (2), a melt-extruded non-woven spun material layer (3), a fleece non-woven material layer (4), a melt-extruded non-woven spun material layer (5), a thermoplastic film outer layer (2') wherein the weight of the non-woven layers being substantially between 50 and 800 g/m2,and wherein the film outer layers (2, 2') are welded at the edge to hold the layers together, and wherein the non-woven materials are made of polypropylene sulfide (pps) or a mixture of pps and organic or inorganic fibers. 2. Insulation member according to claim 1, wherein the layers (2, 2') of film are membrane films permeable to water vapor. 3. The insulation member as claimed in claim 1, wherein the film is fiber reinforced. 4. The insulation member as claimed in claim 1, wherein the film is of a thickness substantially between 10 and 50 μm. 5. The insulation member as claimed in claim 1, wherein the non-woven materials are acoustically absorbing and damping. 6. Insulation member according to claim 1, wherein the layer (4) of non-woven material is thicker than the layers (3, 5) of melt-extruded non-woven spun material. 7. Insulation member according to claim 1, wherein the layer (4) of fleece non-woven material has a thickness which is several times the thickness of the layers (3, 5) of melt-extruded non-woven spun material. 8. Insulation member according to claim 7, wherein the thickness of the fleece non-woven material layer (4) is approximately three to ten times the thickness of the layers of the melt extruded non-woven spun material.