KR100984875B1 - sound-absorbing materials for automobile interior - Google Patents

sound-absorbing materials for automobile interior Download PDF

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KR100984875B1
KR100984875B1 KR1020080137728A KR20080137728A KR100984875B1 KR 100984875 B1 KR100984875 B1 KR 100984875B1 KR 1020080137728 A KR1020080137728 A KR 1020080137728A KR 20080137728 A KR20080137728 A KR 20080137728A KR 100984875 B1 KR100984875 B1 KR 100984875B1
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South Korea
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sound absorbing
fiber
absorbing material
polyester
parts
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KR1020080137728A
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Korean (ko)
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KR20100079298A (en
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조병철
이수남
이현석
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엔브이에이치코리아(주)
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M14/00—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials
    • D06M14/02—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin
    • D06M14/06—Graft polymerisation of monomers containing carbon-to-carbon unsaturated bonds on to fibres, threads, yarns, fabrics, or fibrous goods made from such materials on to materials of natural origin of animal origin, e.g. wool or silk
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/70—Scrap or recycled material

Abstract

본 발명은 자동차 내장용 흡음재에 관한 것으로, 잡사섬유 30 내지 40 중량부, 동물성 천연섬유 30 내지 40 중량부 및 저융점 폴리에스터 섬유 25 내지 35 중량부를 혼섬하여 이루어진 섬유상재층 및 전술한 섬유상재층의 일면에 형성되며 폴리에스터로 이루어진 제 1 부직포층을 포함하여 이루어진다.The present invention relates to a sound absorbing material for automobile interiors, comprising a fiber material layer composed of 30 to 40 parts by weight of hybrid fiber, 30 to 40 parts by weight of animal natural fiber and 25 to 35 parts by weight of low-melting polyester fiber, and the aforementioned fiber material layer. It is formed on one surface of and comprises a first nonwoven layer made of polyester.

전술한 자동차 내장용 흡음재는 동물성 천연섬유를 사용하여 연소성이 개선되었으며, 제 1 및 제 2 부직포층을 형성하여 분진발생을 최소화 하고, 재활용 재료들을 사용하여 제조비용을 절감하였다.The above-described sound absorbing materials for automobile interiors are improved in combustibility using animal natural fibers, to form first and second nonwoven layers to minimize dust generation, and to reduce manufacturing costs by using recycled materials.

자동차, 내장재, 흡음재, 잡사섬유, 천연섬유, 폴리에스터, 부직포 Automotive, interior materials, sound absorbing materials, weave fiber, natural fiber, polyester, nonwoven fabric

Description

자동차 내장용 흡음재 {sound-absorbing materials for automobile interior}Sound-absorbing materials for automobile interior

본 발명은 자동차 내장용 흡음재에 관한 것으로, 동물성 천연섬유가 혼섬되어 형성된 섬유상재층과 폴리에스터로 이루어진 부직포층을 형성하여 난연성이 개선되고, 분진발생이 적은 자동차 내장용 흡음재에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound absorbing material for automobile interiors, and to a non-woven fabric layer made of a fiber material layer and polyester formed by blending animal natural fibers to improve flame retardancy, and to a sound absorbing material for automobile interiors with low dust generation.

자동차를 운행하게 되면 여러가지 소음이 발생하는데, 엔진룸으로 부터 발생하는 소음과, 타이어와 노면의 마찰로 인해 발생하는 소음 등이 대표적이다.When driving a car, various noises are generated, such as noise generated from an engine room and noise generated by friction between a tire and a road surface.

이러한 소음은 공기를 통해 자동차의 실내로 전달되며, 실내로 전달되는 소음을 차단하기 위해 자동차의 내부에 흡음재를 적용하게 되는데, 이러한 흡음재는 흡음성능이 우수할 뿐만 아니라, 자동차 내부에 화재가 발생하였을 때에, 운전자의 안전을 보장하기 위해 연소성이 낮아야 하며, 자동차 실내공기의 오염을 막기위해 분진발생율이 적용기준에 부합되어야 한다.The noise is transmitted to the interior of the vehicle through the air, and the sound absorbing material is applied to the interior of the car to block the noise transmitted to the room. In order to ensure the safety of the driver, the flammability must be low, and the dust generation rate must meet the applicable standard to prevent the pollution of the indoor air of the vehicle.

전술한 물성의 흡음재를 제조하기 위해서는 연소성이 낮은 재료의 사용하거 나, 난연제를 첨가하는 방법이 바람직하며, 연소성이 낮은 흡음재는 제조과정과, 후가공, 후처리 및 차량탑재 후에 낮게 형성된 연소성의 저하가 진행되지 않아야 하며, 흡음재에 연소성을 낮추기 위해 난연제를 사용할 때는 인체에 유해한 물질을 방출하는 재료들을 배제해야 한다.In order to manufacture the sound absorbing material having the above-described physical properties, a method using low combustibility or adding a flame retardant is preferable, and the low combustible sound absorbing material has a low combustibility lower after the manufacturing process, post-processing, post-treatment and vehicle mounting. It should not proceed, and the use of flame retardants to reduce the combustibility of sound absorbers should exclude materials that release substances harmful to humans.

종래에 흡음재는 잡사섬유, 폴리에스터 섬유 및 저융점 폴리에스터 섬유 등을 사용하여, 벌키한 상태로 제조하였는데, 이러한 재료들로 제조되는 자동차 내장용 흡음재는 연소성이 기준치에 부합되지 못한 문제점이 있었다.In the prior art, the sound absorbing material was manufactured in a bulky state using a weed fiber, a polyester fiber, a low melting point polyester fiber, and the like, and the sound absorbing material for automobile interiors made of these materials had a problem in that combustibility did not meet a standard value.

또한, 흡음재를 제조하는 과정과, 제조된 흡음재를 차량에 장착하는 과정에서 분진이 발생하여 작업장과 자동차의 실내를 오염시키며, 작업자의 건강을 악화시키는 문제점이 있었다.In addition, dust is generated in the process of manufacturing the sound absorbing material and the process of mounting the manufactured sound absorbing material to the vehicle to contaminate the interior of the workplace and the car, there is a problem that deteriorates the health of the worker.

본 발명의 목적은 동물성 천연섬유를 사용하여 자동차 내장용 흡음재의 자기소화성능을 향상시켜 연소성을 개선하는 것이다.An object of the present invention is to improve the combustion performance by improving the self-extinguishing performance of the sound absorbing material for automobile interior using animal natural fibers.

본 발명의 다른 목적은 폴리에스터로 이루어진 부직포층을 형성하여 흡음재를 제조하는 과정이나, 제조된 흡음재를 자동차의 실내에 적용하는 과정에서 분진의 발생을 최소화 시키는 것이다.Another object of the present invention is to minimize the generation of dust in the process of manufacturing a sound absorbing material by forming a non-woven fabric layer made of polyester, or applying the manufactured sound absorbing material to the interior of the vehicle.

전술한 본 발명의 목적은, 잡사섬유 30 내지 40 중량부, 동물성 천연섬유 30 내지 40 중량부 및 저융점 폴리에스터 섬유 25 내지 35 중량부를 혼섬하여 이루어진 섬유상재층 및 상기 섬유상재층의 일면에 형성되며 폴리에스터로 이루어진 제 1 부직포층을 포함하여 이루어지는 것을 특징으로 하는 자동차 내장용 흡음재를 제공함에 의해 달성된다.An object of the present invention described above is formed on one surface of the fibrous material layer and the fiber material layer consisting of a mixed fiber 30 to 40 parts by weight, 30 to 40 parts by weight of animal natural fibers and 25 to 35 parts by weight of low-melting polyester fibers And it is achieved by providing a sound absorbing material for automobile interior, characterized in that it comprises a first nonwoven layer made of polyester.

본 발명의 바람직한 특징에 따르면, 상기 섬유상재층의 타면에는 폴리에스터로 이루어지며, 면밀도가 30 내지 50g/m2인 제 2 부직포층이 더 형성되는 것으로 한다.According to a preferred feature of the present invention, the other surface of the fibrous material layer is made of polyester, and the second nonwoven layer having a surface density of 30 to 50 g / m 2 is further formed.

본 발명의 더 바람직한 특징에 따르면, 상기 잡사섬유는 면섬유, 면과 폴리에스터 혼방섬유, 모와 나일론 혼방섬유로 이루어진 그룹으로부터 선택된 하나 이 상으로 이루어지는 것으로 한다.According to a more preferred feature of the invention, the hybrid fiber is made of one or more selected from the group consisting of cotton fibers, cotton and polyester blend fibers, wool and nylon blend fibers.

본 발명의 더욱 바람직한 특징에 따르면, 상기 동물성 천연섬유는 모섬유 및 실크섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the invention, the animal natural fiber is to be made of one or more selected from the group consisting of wool fibers and silk fibers.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 저융점 폴리에스터 섬유는 100 내지 120℃의 용융온도를 갖는 것으로 한다.According to a still further preferred feature of the present invention, the low melting polyester fiber is to have a melting temperature of 100 to 120 ℃.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 제 1 부직포층은 30 내지 50g/m2의 면밀도로 형성되는 것으로 한다.According to a further preferred feature of the invention, the first nonwoven layer is to be formed with a surface density of 30 to 50g / m 2 .

본 발명에 따른 자동차 내장용 흡음재는 동물성 천연섬유를 사용하여 자동차 내장용 흡음재의 자기소화성능을 향상시켜 연소성이 낮은 효과를 나타낸다.The sound absorbing material for automobile interiors according to the present invention improves the self-extinguishing performance of the sound absorbing material for automobile interiors using animal natural fibers, thereby exhibiting low combustibility.

또한, 폴리에스터로 이루어진 부직포층을 형성하여 흡음재를 제조하는 과정이나, 자동차에 적용하는 과정에서 분진의 발생이 최소화되는 탁월한 효과를 나타낸다.In addition, by forming a non-woven fabric layer made of polyester exhibits an excellent effect of minimizing the generation of dust in the process of manufacturing the sound absorbing material or in the process of applying to automobiles.

이하에는, 본 발명의 바람직한 실시예와 각 성분의 물성을 상세하게 설명하되, 이는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 발명을 용이하게 실시할 수 있을 정도로 상세하게 설명하기 위한 것이지, 이로 인해 본 발명의 기술적인 사상 및 범주가 한정되는 것을 의미하지는 않는다.In the following, preferred embodiments of the present invention and the physical properties of each component will be described in detail, which is intended to explain in detail enough to be able to easily carry out the invention by one of ordinary skill in the art, This does not mean that the technical spirit and scope of the present invention is limited.

본 발명에 따른 자동차 내장용 흡음재는 잡사섬유 30 내지 40 중량부, 동물성 천연섬유 30 내지 40 중량부 및 저융점 폴리에스터 섬유 25 내지 35 중량부를 혼섬하여 이루어진 섬유상재층(10) 및 전술한 섬유상재층(10)의 일면에 형성되며 폴리에스터로 이루어진 제 1 부직포층(20)을 포함하여 이루어진다.Sound absorbing material for automobile interior according to the present invention is a fibrous material layer 10 made of a mixed fiber 30 to 40 parts by weight of hybrid fiber, 30 to 40 parts by weight of animal natural fiber and 25 to 35 parts by weight of low-melting polyester fiber and the above-described fibrous material It is formed on one side of the layer 10 and comprises a first nonwoven layer 20 made of polyester.

전술한 섬유상재층(10)은 잡사섬유 30 내지 40 중량부, 동물성 천연섬유 30 내지 40 중량부, 저융점 폴리에스터 섬유 25 내지 35 중량부를 혼섬하고, 에어레이드(Air-laid) 공법을 통해 적층하여 벌키성이 있는 형태로 형성된다.The above-described fibrous material layer 10 is mixed with 30 to 40 parts by weight of hybrid fiber, 30 to 40 parts by weight of animal natural fiber, 25 to 35 parts by weight of low-melting polyester fiber, and laminated through an air-laid method. It is formed into a bulky form.

전술한 잡사섬유는 섬유상재층(10)을 형성할 때, 30 내지 40 중량부가 혼섬되며, 면섬유, 면과 폴리에스터 혼방섬유, 모와 나일론 혼방섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지며, 자동차의 실내로 유입되는 소음을 차단하는 역할을 한다.When the aforementioned hybrid fiber is formed of the fibrous material layer 10, 30 to 40 parts by weight are mixed and made of one or more selected from the group consisting of cotton fibers, cotton and polyester blend fibers, wool and nylon blend fibers, and It blocks the noise that enters the room.

또한, 전술한 잡사섬유는 면섬유, 면과 폴리에스터를 혼합한 면혼방섬유, 모와 나일론을 혼섬한 모혼방섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지며, 방적공정에서 발생한 폐섬유와 면섬유, 면과 폴리에스터 혼방섬유, 모와 나일론 혼방섬유를 제품화하는 과정에서 발생한 스크랩을 타면공정 처리하여 생산된 재활용 섬유를 사용하기 때문에 자동차 내장용 흡음재의 제조비용을 줄여주는 역할을 한다.In addition, the above-mentioned hybrid fiber is made of one or more selected from the group consisting of cotton fibers, cotton blended fibers mixed with cotton and polyester, woolen blended fibers mixed with wool and nylon, waste fibers and cotton fibers, cotton and It reduces the manufacturing cost of sound absorbing materials for automobile interiors by using recycled fibers produced by processing the scraps generated during the production of polyester blend fibers, wool and nylon blend fibers.

전술한 동물성 천연섬유는 섬유상재층(10)을 형성할 때, 30 내지 40 중량부가 혼섬되며, 모섬유 및 실크섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지기 때문에 섬유상재층(10)의 자기소화성능이 향상되어 흡음재의 연소성을 낮추는 역할을 한다.When the above-mentioned animal natural fiber forms the fibrous material layer 10, 30 to 40 parts by weight are mixed, and the self-extinguishing performance of the fibrous material layer 10 is made of at least one selected from the group consisting of woolen fibers and silk fibers. This improves the role of lowering the burnability of the sound absorbing material.

또한, 모섬유 방적공정에서 발생한 폐섬유와 모섬유 및 실크섬유를 제품화하는 과정에서 발생한 스크랩을 타면공정 처리하여 생산된 재활용 섬유를 사용하기 때문에 자동차 내장용 흡음재의 제조비용을 줄여주는 역할을 한다.In addition, since the waste fiber generated in the wool fiber spinning process and the scrap generated in the process of commercializing the wool fiber and silk fiber used recycled fiber produced by processing the other side, it serves to reduce the manufacturing cost of the sound absorbing material for automobile interior.

전술한 저융점 폴리에스터 섬유는 섬유상재층(10)을 형성할 때, 25 내지 35 중량부가 혼섬되며, 100 내지 120℃의 용융온도를 나타내는데, 전술한 잡사섬유와 동물성 천연섬유를 결합시켜주는 바인더의 역할을 한다.When the low-melting polyester fibers described above form the fibrous material layer 10, 25 to 35 parts by weight are mixed and exhibit a melting temperature of 100 to 120 ° C., which binds the aforementioned hybrid fiber fibers and animal natural fibers. Plays a role.

전술한 제 1 부직포층(20)은 전술한 섬유상재층(10)의 일면에 형성되며, 폴리에스터로 이루어지고 30 내지 50g/m2의 면밀도로 형성된다.The first nonwoven fabric layer 20 described above is formed on one surface of the fibrous material layer 10 described above, and is made of polyester and formed with a surface density of 30 to 50 g / m 2 .

이러한 제 1 부직포층(20)의 형성을 통해, 흡음재를 제조하는 과정과, 제조된 흡음재를 차량에 장착하는 동안 섬유상재층(10)에서 발생하는 분진의 양을 줄여주는 역할을 한다.Through the formation of the first nonwoven fabric layer 20, the process of manufacturing the sound absorbing material and reducing the amount of dust generated in the fibrous material layer 10 while mounting the manufactured sound absorbing material in the vehicle.

또한, 본 발명에 따른 자동차 내장용 흡음재는 제 1 부직포층(20)이 형성된 섬유상재층(10)의 타면에 제 2 부직포층(30)이 더 형성되어 이루어질 수도 있다.In addition, in the sound absorbing material for automobile interiors according to the present invention, the second nonwoven fabric layer 30 may be further formed on the other surface of the fibrous material layer 10 on which the first nonwoven fabric layer 20 is formed.

전술한 제 2 부직포층(30)은 전술한 제 1 부직포층(20)과 동일한 재료와 방 법을 통해 형성되기 때문에 그 설명은 생략하기로 한다.Since the above-described second nonwoven fabric layer 30 is formed through the same material and method as the above-described first nonwoven fabric layer 20, the description thereof will be omitted.

이하에서는, 본 발명에 따른 자동차 내장용 흡음재의 제조방법을 실시예를 들어 설명한다.Hereinafter, the manufacturing method of the sound absorbing material for automobile interior according to the present invention will be described with reference to Examples.

<실시예 1>&Lt; Example 1 >

잡사섬유 40 중량부, 모섬유 30 중량부 및 저융점 폴리에스터 섬유 30 중량부를 혼섬하고, 에어레이드 공법으로 면밀도 1000g/m2의 섬유상재층을 형성하고, 섬유상재층의 일면에 30g/m2의 폴리에스터부직포층을 적층하고, 예열기를 통해 예열하여 두께가 10mm인 자동차 내장용 흡음재를 제조하였다.Japsa fiber 40 parts by weight, moseomyu 30 parts by weight of low-melting polyester fiber and 30 parts by weight of honseom, and an air-laid method with the area density of 1000g / m 30g / m 2 on one surface of the second fiber form an overburden layer, and fiber overburden layer of The polyester nonwoven fabric layer was laminated and preheated through a preheater to prepare a sound absorbing material for automobile interior having a thickness of 10 mm.

<실시예 2><Example 2>

실시예 1과 동일하게 진행하여 섬유상재층을 형성하고, 섬유상재층의 일면에는 폴리에스터로 이루어지며, 면밀도가 30g/m2인 제 1 부직포층을 적층하고, 타면에는 폴리에스터로 이루어지며, 면밀도가 30g/m2인 제 2 부직포층을 적층하고, 예열기를 통해 예열하여 두께가 20mm인 자동차 내장용 흡음재를 제조하였다.Proceeding in the same manner as in Example 1 to form a fibrous material layer, one side of the fibrous material layer is made of polyester, the first non-woven fabric layer having a surface density of 30 g / m 2 , and the other side is made of polyester, A second nonwoven fabric layer having a surface density of 30 g / m 2 was laminated and preheated through a preheater to prepare a sound absorbing material for automobile interior having a thickness of 20 mm.

<비교예 1>Comparative Example 1

잡사섬유 70 중량부, 저융점 폴리에스터 30 중량부를 혼섬하고, 에어레이드 공법으로 면밀도 1000g/m2의 섬유상재층을 형성한 후에, 예열기를 통해 예열하여 두께가 10mm인 자동차 내장용 흡음재를 제조하였다.70 parts by weight of hybrid fiber and 30 parts by weight of low-melting polyester were mixed together, and a fibrous material layer having a surface density of 1000 g / m 2 was formed by an airlaid method. .

<비교예 2>Comparative Example 2

비교예 1과 동일하게 진행하되, 두께가 20mm인 자동차 내장용 흡음재를 제조하였다.Proceed in the same manner as in Comparative Example 1, a sound absorbing material for automobile interior having a thickness of 20mm was prepared.

실시예 1과 비교예 1을 통해 제조된 자동차 내장용 흡음재의 연소성을 시험하여 표 1에 나타내었고, 실시예 2와 비교예 2를 통해 제조된 자동차 내장용 흡음재의 분진시험 결과를 표 2에 나타내었다.The burnability of the sound absorbing materials for automobile interiors prepared through Example 1 and Comparative Example 1 was shown in Table 1, and the dust test results of the sound absorbing materials for automobile interiors prepared through Examples 2 and Comparative Example 2 are shown in Table 2. It was.

단, 연소성은 MD(Machine Direction)와 AMD(Across Machine Direction)모두 MS 300-08 내장재의 연소성 시험측정방법을 통해 이루어졌으며, 시편크기는 100×350mm이며, 상태조건은 23℃, 50%RH×24hr이며, 열노화 조건은 80℃×168hr → 23℃, 50%RH×24hr이다.However, combustibility was achieved through the test method of combustibility test of both MS (Machine Direction) and AMD (Across Machine Direction), and the specimen size was 100 × 350mm and the condition was 23 ℃, 50% RH × It is 24 hours, and heat-aging conditions are 80 degreeC * 168hrs → 23 degreeC, and 50% RH * 24hr.

분진은 GM9635P 섬유상재로 구성된 흡음재의 분진시험을 통해 이루어졌으며, 시편크기는 50×50mm 4매, 용기는 뚜껑이 있는 금속용기 4L이며, 진동(Shake)속도는 150회/60sec이다.Dust was made through the dust test of sound absorbing material composed of GM9635P fibrous material. The specimen size is 50 × 50mm 4 sheets, the container is 4L metal container with lid, and the shake speed is 150 times / 60sec.

<표 1>TABLE 1

Figure 112008090815780-pat00001
Figure 112008090815780-pat00001

<표 2>TABLE 2

Figure 112008090815780-pat00002
Figure 112008090815780-pat00002

위에 표 1,2에 나타낸 것처럼 본 발명의 실시예 1,2에 따라 제조된 자동차 내장용 흡음재는 비교예 1,2에 따라 제조된 자동차 내장용 흡음재에 비해 연소성이 낮고, 분진 발생율이 개선된 것을 알 수 있다.As shown in Tables 1 and 2 above, the sound absorbing materials for automobile interiors prepared according to Examples 1 and 2 of the present invention have low combustibility and improved dust generation rate, compared to the sound absorbing materials for automobile interiors prepared according to Comparative Examples 1 and 2. Able to know.

도 1은 본 발명의 일 실시예에 따른 자동차 내장용 흡음재를 나타낸 분해사시도 이다.1 is an exploded perspective view showing a sound absorbing material for automobile interior according to an embodiment of the present invention.

도 2는 본 발명의 다른 실시예에 따른 자동차 내장용 흡음재를 나타낸 분해사시도 이다.Figure 2 is an exploded perspective view showing a sound absorbing material for automobile interior according to another embodiment of the present invention.

***도면의 주요 부분의 설명****** Description of the main parts of the drawings ***

10 ; 섬유상재층10; Fibrous layer

20 ; 제 1 부직포층20; First nonwoven fabric layer

30 ; 제 2 부직포층30; Second nonwoven layer

Claims (6)

잡사섬유 30 내지 40 중량부, 동물성 천연섬유 30 내지 40 중량부 및 저융점 폴리에스터 섬유 25 내지 35 중량부를 혼섬하여 이루어진 섬유상재층; 및 A fibrous material layer composed of 30 to 40 parts by weight of hybrid fiber, 30 to 40 parts by weight of animal natural fiber and 25 to 35 parts by weight of low melting polyester fiber; And 상기 섬유상재층의 일면에 형성되며 폴리에스터로 이루어진 제 1 부직포층;을 포함하여 이루어지는 것을 특징으로 하는 자동차 내장용 흡음재.A sound absorbing material for automobile interiors, comprising: a first nonwoven fabric layer formed on one surface of the fibrous material layer and made of polyester. 청구항 1에 있어서,The method according to claim 1, 상기 섬유상재층의 타면에는 폴리에스터로 이루어지며, 면밀도가 30 내지 50g/m2인 제 2 부직포층이 더 형성되는 것을 특징으로 하는 자동차 내장용 흡음재.The other surface of the fibrous material layer is made of polyester, the sound absorbing material for automobile interior, characterized in that the second non-woven fabric layer having a surface density of 30 to 50g / m 2 is further formed. 청구항 1에 있어서,The method according to claim 1, 상기 잡사섬유는 면섬유, 면혼방섬유, 모혼방섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 자동차 내장용 흡음재.The hybrid fiber is a sound absorbing material for automobile interiors, characterized in that made of one or more selected from the group consisting of cotton fibers, cotton blend fibers, wool blend fibers. 청구항 1에 있어서,The method according to claim 1, 상기 동물성 천연섬유는 모섬유 및 실크섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 자동차 내장용 흡음재. The animal natural fiber is a sound absorbing material for automobile interiors, characterized in that consisting of at least one selected from the group consisting of wool fibers and silk fibers. 청구항 1에 있어서,The method according to claim 1, 상기 저융점 폴리에스터 섬유는 100 내지 120℃의 용융온도를 갖는 것을 특징으로 하는 자동차 내장용 흡음재.The low melting polyester fiber is a sound absorbing material for automobile interiors, characterized in that it has a melting temperature of 100 to 120 ℃. 청구항 1에 있어서,The method according to claim 1, 상기 제 1 부직포층은 30 내지 50g/m2의 면밀도로 형성되는 것을 특징으로 하는 자동차 내장용 흡음재.The first nonwoven fabric layer is a sound absorbing material for automobile interior, characterized in that formed with a surface density of 30 to 50g / m 2 .
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JPH06348279A (en) * 1993-06-10 1994-12-22 Nissan Motor Co Ltd Sound absorbing material for vehicle exterior
JPH10235665A (en) * 1997-02-24 1998-09-08 Kanegafuchi Chem Ind Co Ltd Platelike form and molded form and their manufacture
JP2001032164A (en) 1999-07-16 2001-02-06 Taiyoo Techno Kk Fiber sheet and composite fiber sheet
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