Composition structure of sound absorption and insulation composite material

Abstract

The invention provides a composition structure of a sound absorption and insulation composite material. The composition structure is formed by closely pasting at least one fiber non-woven fabric layer to at least one closed foam layer having a plurality of independent closed pores, wherein the fiber non-woven fabric layer is a fiber lamination layer prepared from an environmentally-friendly recycled fiber material through using a non-woven fabric making method, has a thickness of 0.5mm or more and has a weight between 50g / m<2> and 3000g / m<2>, and the closed foam layer is a closed foam body having a plurality of independent closed pores and has a thickness of 1mm or more; a thermoplastic plastic film is closely pasted on the lateral surface of the fiber non-woven fabric layer to increase the sound absorption effect; the thermoplastic plastic film can be closely pasted on the surface layer of the closed foam layer no matter the surface layer of the closed foam layer is a split surface or not to increase the sound insulation effect; and the thickness of the closely pasted thermoplastic plastic film is between 0.009mm and 0.1mm.

Description

【Technical field】 [0001] The invention relates to a composition structure of a sound-absorbing composite material, especially a sound-absorbing composite material composed of at least one fiber non-woven layer and at least one closed foam layer, which has light weight and excellent sound-absorbing effect. 【Background technique】 [0002] In the general daily life environment, there will be many places where good sound absorption and / or sound insulation effects must be applied. The most common one is that in order to achieve comfortable ride and good sound effect in luxury cars, materials with good sound-absorbing and sound-insulating effects must be used to isolate and absorb external mid- and high-frequency noisy sounds, as well as the sound generated by the vehicle itself when driving. Low and medium frequency noise and resonance. If the sound absorption and sound insulation effects are not good, it is difficult to show the sense of value of a high-end car. Therefore, the...

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Problems solved by technology

The inventor is specialized in the research, development and manufacture of various fiber non-woven fabrics (called non-woven fabrics) materials, and has deep experience in the manufacturing of various fiber non-woven fabrics, so he understands the uses of fiber non-woven fabrics quite well. It is widely known and well known that some people have been trying to find sound-absorbing and insulating materials with good effects from the material formula and manufacturing method of fiber non-woven fabrics, but no very satisfactory results have appeared.

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