KR100874262B1 - PET sound-absorbing material using a mixed yarn felt - Google Patents

PET sound-absorbing material using a mixed yarn felt Download PDF

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KR100874262B1
KR100874262B1 KR1020060138131A KR20060138131A KR100874262B1 KR 100874262 B1 KR100874262 B1 KR 100874262B1 KR 1020060138131 A KR1020060138131 A KR 1020060138131A KR 20060138131 A KR20060138131 A KR 20060138131A KR 100874262 B1 KR100874262 B1 KR 100874262B1
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pet
fiber
absorbing material
sound absorbing
sound
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KR20070046019A (en
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임순혁
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에스케이케미칼주식회사
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/55—Polyesters
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • 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
    • B60R13/083—Acoustic or thermal insulation of passenger compartments for fire walls or floors
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4274—Rags; Fabric scraps
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/559—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving the fibres being within layered webs
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2505/00—Industrial
    • D10B2505/12—Vehicles

Abstract

본 발명은 잡사 펠트를 이용하여 제조한 PET 흡음재에 관한 것이다. The present invention relates to a PET sound absorbing material produced using a mixed yarn felt.

본 발명은 PET 흡음재 제조시 잡섬유 파이버를 일정 비율로 섞은 매트릭스 파이버를 사용함으로써, 재료비 절감과 동시에 흡음 및 차음 성능을 향상시킬 수 있는 한편, PET 흡음재의 표면에 얇은 표면처리 부직포를 부착하여 마감함으로써, 표면에서의 분진 발생을 방지할 수 있는 잡사 펠트를 이용한 PET 흡음재를 제공한다. The present invention by using a matrix fiber mixed with a certain ratio of mixed fiber fibers in the production of PET sound absorbing material, while improving the sound absorption and sound insulation performance while reducing the material cost, by attaching a thin surface treatment nonwoven fabric on the surface of the PET sound absorbing material to finish , Provides a PET sound absorbing material using a mixed yarn felt that can prevent the generation of dust on the surface.

PET 흡음재, 잡사 펠트, 바인더 파이버, 매트릭스 파이버, PET 부직포 PET sound absorbing material, mixed yarn felt, binder fiber, matrix fiber, PET nonwoven fabric

Description

잡사 펠트를 이용한 ＰＥＴ 흡음재{PET sound-absorbing materials using recycling fabric felt}PET sound-absorbing materials using recycling fabric felt}

도 1은 본 발명의 일 실시예에 따른 PET 흡음재를 보여주는 단면도1 is a cross-sectional view showing a PET sound absorbing material according to an embodiment of the present invention

도 2는 잡사 샘플과 비교 샘플의 흡음율 실험 결과를 보여주는 그래프Figure 2 is a graph showing the sound absorption rate test results of the hybrid sample and the comparison sample

도 3은 잡사 샘플과 비교 샘플의 차음 실험 결과를 보여주는 그래프3 is a graph showing the results of the sound insulation experiment of the sample and the comparison sample

본 발명은 잡사 펠트를 이용한 PET 흡음재에 관한 것으로서, 더욱 상세하게는 잡섬유 파이버와 PET 파이버를 일정비율로 섞은 매트릭스 파이버와 저융점 바인더 파이버를 사용하여 웹 적층제 형태로 만든 새로운 PET 흡음재를 구현함으로써, 우수한 흡차음 성능을 얻을 수 있고, 특히 잡사와 재활용과 관련하여 재료비를 절감할 수 있는 잡사 펠트를 이용한 PET 흡음재에 관한 것이다. The present invention relates to a PET sound absorbing material using a mixed yarn felt, and more particularly, by implementing a new PET sound absorbing material made of a web laminate using a matrix fiber and a low melting binder fiber mixed at a predetermined ratio with a mixed fiber fiber and a PET fiber. In particular, the present invention relates to a PET sound absorbing material using a weeding felt that can obtain excellent sound absorbing and insulating performance, and in particular, can reduce material costs in connection with the weeding and recycling.

일반적으로 자동차의 실내로 유입되는 대표적인 소음으로는 엔진에서 발생하여 차체 또는 공기를 통해 전달되는 엔진 투과 소음이 있다.In general, typical noise flowing into the interior of a vehicle includes engine noise generated by an engine and transmitted through a vehicle body or air.

이러한 엔진 투과 소음을 억제하기 위하여 통상의 자동차에서는 엔진 커버 또는 후드 인슐레이터 등을 사용하고 있으나, 이들만을 통해서는 소음을 원하는 수준으로 제거하는데에는 한계가 있고 미흡한 점이 있다.In order to suppress such engine transmission noise, an engine cover or hood insulator or the like is used in a typical vehicle, but there are limitations and insufficient points in removing noise to a desired level.

따라서, 자동차에는 여러 위치에 흡음재를 적용하고 있는데, 예컨대 엔진룸에서 발생하는 소음을 차단하기 위하여 엔진룸과 차실을 구분하는 대쉬 패널에 흡음재가 설치되고 있으며, 또한 차바닥으로부터 전달되는 소음을 차단하기 위한 흡음재가 플로어 패널 등에 설치되고 있다.Therefore, in automobiles, sound absorbing materials are applied at various positions. For example, sound absorbing materials are installed in a dash panel that separates an engine compartment from a compartment to block noise generated in an engine compartment. Sound-absorbing material for this is installed in a floor panel etc.

대쉬 패널에서는 차량의 실외에 부착된 대쉬 아우터(dash outer) 및 실내에 부착된 대쉬 이너(dash inner)가 대부분의 소음을 제거하는 역할을 하고 있다.In the dash panel, a dash outer attached to the exterior of the vehicle and a dash inner attached to the interior serve to remove most of the noise.

그리고, 플로어 패널(floor panel)에 설치되는 흡음재는 도 10에 나타낸 바와 같이 플로어 카페트의 저면에 깔리면서 설치되는데, 자동차에서 플로어 카페트에 의해 유입되는 소음은 엔진에서 발생한 음이 차체를 통해서 유입되는 소음과 타이어와 노면과의 접촉시 발생되는 소음이 차체를 통해서 유입되는 소음으로 크게 대별되며, 이러한 소음을 개선하는 방법에는 흡음성능을 개선하는 것과 차음성능을 개선하는 두 가지 방법이 있다.And, the sound absorbing material is installed on the floor panel (floor panel) is installed while spreading on the bottom of the floor carpet, as shown in Figure 10, the noise introduced by the floor carpet in the car is the noise generated from the engine through the car body The noise generated when the tire is in contact with the road surface is largely classified into the noise flowing through the vehicle body. There are two ways to improve the noise, and to improve the sound absorbing performance and the sound insulating performance.

보통 흡음이란 발생한 음 에너지가 소재의 내부경로를 통해 전달되면서 열에너지로 변환되어 소멸하는 것이며, 차음은 발생한 음 에너지가 차폐물에 의해 반사되어 차단되는 것이다. In general, sound absorption means that the generated sound energy is converted into thermal energy and extinguished as it is transmitted through the inner path of the material, and the sound insulation is reflected by the shield and blocked.

흡음성능은 주로 소재의 내부형태와 관련이 있으며, 차음성능은 소재의 밀도 및 구조와 깊은 관련이 있다. The sound absorption performance is mainly related to the internal shape of the material, and the sound insulation performance is closely related to the density and structure of the material.

즉, 흡음성능을 만족하기 위해서는 우레탄 폼과 같이 미세한 오픈 셀 입자가 많이 존재해야 하며, 펠트(felt)의 경우 섬도가 낮은 파이버를 사용해야 한다는 것은 이미 주지의 사실이다. That is, in order to satisfy the sound absorbing performance, many fine open cell particles such as urethane foam should be present, and in the case of felt, it is already known that fibers having low fineness should be used.

또한, 흡음재에서 면과 면의 밀도 차이가 발생할 때, 이에 따른 에너지의 손실이 커지는 원리를 이용하여 흡음재의 면밀도를 다르게 함으로써 동일 면밀도에 비해 보다 향상된 성능을 나타낼 수 있다.In addition, when the difference between the density of the surface and the sound absorbing material in the sound absorbing material, by using the principle that the energy loss is increased according to the different surface density of the sound absorbing material can exhibit more improved performance than the same surface density.

차음성능을 개선하기 위해서는 별도의 차음재인 헤비레이어 소재를 사용하는 것이 일반화된 기술이다.In order to improve sound insulation performance, it is a general technique to use a heavy insulation material, which is a separate sound insulation material.

상술한 바와 같이 자동차에서는 소음이 가장 많이 유입되는 부분인 대쉬 패널 및 플로어 패널, 도어 패널, 루프 패널의 실내 측과 그 밖의 각종 내장재 등을 포함한 여러 위치에 흡음재가 적용되고 있다.As described above, in automobiles, sound absorbing materials are applied to various locations including the dash panel, the floor panel, the door panel, the interior side of the roof panel, and various other interior materials, which are the parts where noise is most introduced.

이러한 흡음재의 재질로는 폴리우레탄(polyurethane) 폼 또는 섬유질 펠트가 사용되고 있으며, 특히 최근에는 흡음 및 단열성능의 향상을 위하여 폴리에틸렌테레프탈레이트(polyethylene terephtalate;PET) 펠트가 널리 사용되고 있다.Polyurethane foam or fibrous felt is used as the material of the sound absorbing material, and in recent years, polyethylene terephtalate (PET) felt has been widely used to improve sound absorption and thermal insulation performance.

소음을 억제하기 위하여 종래에 사용되어온 흡음소재로는 폴리우레탄 폼을 많이 사용하여 왔으나, 우레탄 폼의 경우 흡음성은 우수하나, 차음성이 저하되는 관계로 별도의 헤비레이어라는 차음재를 삽입하여 사용하고 있다.Polyurethane foam has been used as a sound absorbing material conventionally used to suppress noise. However, in the case of urethane foam, sound absorption is excellent, but a sound insulation material called a separate heavy layer is used in order to reduce sound insulation. .

그러나, 이 경우 차음성은 어느 정도 개선되나 고밀도의 헤비레이어층의 삽입으로 인하여 전체 어셈블리 중량이 증가하게 됨으로써 자동차 연비가 저하되는 문제 및 우레탄 폼용 별도의 금형을 준비해야하는 관계로 제조원가가 상승하는 문 제가 있다. However, in this case, the sound insulation is improved to some extent, but as the overall assembly weight is increased due to the insertion of a high density heavy layer layer, a problem in that manufacturing cost increases due to a problem of lowering fuel efficiency of automobiles and a separate mold for urethane foam must be prepared. have.

또한, 헤비레이어층은 사용 후 재활용이 불가능하기 때문에 환경문제 발생 및 별도의 폐기비용이 발생하는 등의 문제가 있었다.In addition, since the heavy layer layer is not recycled after use, there are problems such as environmental problems and separate disposal costs.

따라서, 최근에 헤비레이어층을 삭제한 폴리에스터를 사용하여 중량을 낮추고, 흡음성 및 차음성능을 개선한 제품들이 많이 사용되어 왔다.Therefore, in recent years, many products have been used that have lowered weight and improved sound absorption and sound insulation performance by using a polyester in which a heavy layer layer has been removed.

한편, 일반적인 견면의 흡음재는 저융점 섬유 바인더(LMF)와 고융점 섬유(SF)를 소정의 비로 혼합하여 층을 쌓은 뒤, 열융착 또는 니들 펀칭(needle punching)하여 제조하게 된다.On the other hand, the general sound-absorbing material is prepared by mixing the low melting fiber binder (LMF) and high melting point fibers (SF) in a predetermined ratio to build a layer, and then heat fusion or needle punching (needle punching).

예를 들면, 기존의 흡차음재의 경우 잡섬유펠트, 레진펠트, 우드파이버나 우드스톡에 의한 매트, 발포우레탄, PET펠트 등이 주로 사용되어 오고 있고, 발포우레탄을 제외한 이들 펠트류는 일반적으로 PET 섬유, 잡솜, 재생섬유, 우드파이버 등을 소재로 저융점 바인더 파이버를 일정량 혼합하여 단일 시트상으로 만들거나, 두겹 또는 세겹으로 적층시에는 별도의 시트에 접착제를 도포하여 상호 부착시킨 형태이거나, 페놀수지에 의한 열성형 또는 니들 펀칭하는 방법으로 제조하게 된다. For example, in the conventional sound absorbing and insulating material, miscellaneous fiber felt, resin felt, wood fiber or wood stock mat, foam urethane, PET felt and the like have been mainly used. A small amount of low-melting binder fibers are mixed to form a single sheet from fibers, cotton, recycled fiber, wood fiber, etc. It is prepared by a method of thermoforming or needle punching with a resin.

여기서, 레진펠트, 우드펠트 등은 열경화성 수지인 페놀수지를 열접착제로 사용하기 때문에 제조과정에서 발생되는 분진, 가스, 냄새 등으로 인체에 유해한 산업환경 공해문제를 유발할 뿐만 아니라 차실내의 쾌적한 환경을 저해하여 그 사용량이 점차 감소하고 있는 추세이다. Here, resin felt and wood felt use thermosetting resin phenolic resin as heat adhesive, so it is not only harmful to human body due to dust, gas and odor generated in the manufacturing process, but also harmful to the environment. Its use is gradually decreasing.

또한, 최근 흡차음 소재로 각광받고 있는 PET 흡음재의 경우에는 획일적으로 혼용비율만을 조절하여 단순혼합형태로 사용하고 있을 뿐 PET 흡음재 개발과 관련 한 연구와 노력이 미흡한 실정이며, 이로 인해 기존 대부분의 PET 흡음재의 경우 흡음 및 차음 성능을 높이는데 한계가 있는 등 흡음성능이 더욱 향상된 새로운 형태의 흡음재가 필요한 실정이다.In addition, in the case of PET sound absorbing materials, which have recently been spotlighted as sound absorbing and insulating materials, they are used in a simple mixed form by controlling only the mixing ratio uniformly, and there is a lack of research and efforts related to the development of PET sound absorbing materials. In the case of the sound absorbing material, there is a need for a new type of sound absorbing material having improved sound absorption performance, such as a limitation in improving sound absorption and sound insulation performance.

따라서, 본 발명은 이와 같은 점을 감안하여 안출한 것으로서, PET 흡음재 제조시 잡섬유 파이버를 일정 비율로 섞은 매트릭스 파이버를 사용함으로써, 재료비 절감과 동시에 흡음 및 차음 성능을 향상시킬 수 있는 잡사 펠트를 이용한 PET 흡음재를 제공하는데 그 목적이 있다. Therefore, the present invention has been made in view of the above, by using a matrix fiber mixed with a certain ratio of the mixed fiber fibers in the production of PET sound absorbing material, using a mixed yarn felt that can improve the sound absorption and sound insulation performance while reducing material costs The purpose is to provide a PET sound absorbing material.

또한, 본 발명은 PET 흡음재의 표면에 얇은 표면처리 부직포를 부착하여 마감함으로써, 표면에서의 분진 발생을 방지할 수 있는 잡사 펠트를 이용한 PET 흡음재를 제공하는데 다른 목적이 있다. Another object of the present invention is to provide a PET sound absorbing material using a mixed yarn felt which can prevent dust generation on the surface by attaching and finishing a thin surface treated nonwoven fabric on the surface of the PET sound absorbing material.

상기 목적을 달성하기 위한 본 발명은 기재로 섬도 4~15 데니어의 고융점 PET 파이버 40~70중량%, 바인더로 섬도 2~10 데니어의 저융점 파이버 15~50중량%, 아크릴, 면, 이불, 옷을 포함하는 재활용 폐섬유 파이버인 잡섬유 파이버 10~50중량% 를 혼용하여 면밀도 100~4000g/㎡으로 제조된 흡음재 본층과;
기재로 섬도 4~15 데니어의 고융점 PET 파이버 50~80중량%, 바인더로 섬도 2~10 데니어의 저융점 파이버 20~50중량%를 혼용하여 면밀도 10~100g/㎡으로 제조되어 상기 흡음재 본층의 일표면 또는 양표면에 부착되는 PET 부직포;
로 구성된 것을 특징으로 하는 잡사 펠트를 이용한 PET 흡음재를 제공한다.The present invention for achieving the above object is 40 to 70% by weight of a high melting point PET fiber of fineness of 4 to 15 denier as a base material, 15 to 50% by weight of a low melting point fiber of 2 to 10 denier of fineness as a binder, acrylic, cotton, duvet, A sound absorbing material main layer made of 100 to 4000 g / m2 of surface density by mixing 10 to 50% by weight of mixed fiber fibers which are recycled waste fiber fibers including clothes;
50 to 80% by weight of a high melting point PET fiber having a fineness of 4 to 15 deniers as a substrate and 20 to 50% by weight of a low melting point fiber having a fineness of 2 to 10 deniers as a binder is prepared at a surface density of 10 to 100 g / m2, PET nonwovens attached to one or both surfaces;
It provides a PET sound absorbing material using a mixed yarn felt, characterized in that consisting of.

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이하, 첨부한 도면을 참조하여 본 발명의 일 실시예에 따른 잡사 펠트를 이용한 PET 흡음재에 대해 더욱 상세히 설명하면 다음과 같다.Hereinafter, with reference to the accompanying drawings, a PET sound absorbing material using a mixed yarn felt according to an embodiment of the present invention will be described in more detail.

본 발명은 자동차 등에서 소음 저감을 위하여 사용될 수 있는 PET 흡음재를제공하며, 특히 기재인 메트릭스 파이버의 일부를 잡섬유 파이버로 대체하여 우수한 흡음 및 차음 성능을 확보하고, 또 재료비를 절감할 수 있도록 한 것이다. The present invention provides a PET sound absorbing material that can be used for noise reduction in automobiles, and in particular, by replacing a part of the matrix fiber as a substrate with miscellaneous fiber fibers to secure excellent sound absorption and sound insulation performance, and to reduce material costs. .

첨부한 도 1은 본 발명의 일 실시예에 따른 PET 흡음를 도시한 단면도로서, 바인더 파이버 및 매트릭스 파이버(잡섬유 파이버 포함)를 웹 적층제 형태로 구성한 흡음재 본(本)층과 겉면에 표면처리되는 PET 부직포를 보여준다. 1 is a cross-sectional view illustrating the sound absorption of PET according to an embodiment of the present invention, wherein the sound absorbing material main layer and the outer surface of the binder fiber and the matrix fiber (including miscellaneous fiber fibers) are formed in the form of a web laminate. Shows PET nonwovens.

도 1에 도시한 바와 같이, 본 발명의 PET 흡음재는 잡섬유 파이버와 PET 파이버를 일정비율로 섞어 매트릭스 파이버를 구성하고, 저융점 바인더 파이버를 사용하여 웹 적층제로 만든 흡음재 본층과, 상기 흡음재 본층의 표면에 적층되어 열융착에 의해 부착되는 적어도 하나 이상의 PET 부직포로 구성된다. As shown in FIG. 1, the PET sound absorbing material of the present invention comprises a matrix fiber by mixing a mixed fiber fiber and a PET fiber at a predetermined ratio, and a sound absorbing material main layer made of a web laminate using a low melting point binder fiber, and the sound absorbing material main layer It is composed of at least one PET nonwoven fabric laminated to the surface and attached by thermal fusion.

본 발명의 PET 흡음재는 다음과 같은 특징을 가진다.PET sound absorbing material of the present invention has the following characteristics.

상기 PET 흡음재는 PET 파이버를 기본 소재로 사용하면서 잡섬유 파이버, 예를 들면 아크릴, 면, 이불, 옷 등과 같은 재활용을 위한 폐섬유 파이버를 매트릭스 파이버의 일부로 사용하여 보다 향상된 흡차음 성능을 나타낸다. The PET sound absorbing material exhibits improved sound absorbing and absorbing performance by using waste fiber fibers for recycling such as miscellaneous fibers, for example, acrylic, cotton, duvets, clothes, etc., as part of the matrix fiber while using PET fibers as a base material.

이를 위하여, 상기 PET 흡음재의 흡음재 본층은 기재로서 섬도 4~15 데니어의 고융점 PET 파이버 40~70중량%와, 바인더로서 섬도 2~10 데니어의 저융점 파이버 15~50중량%와, 잡섬유 파이버(유효성분 함량 기준) 10~50중량%를 혼용하여 면밀도 100~4000g/㎡이 되도록 구성한 것이다. To this end, the sound absorbing material main layer of the PET sound absorbing material is 40 to 70% by weight of the high melting point PET fiber of fineness of 4 to 15 denier as a substrate, 15 to 50% by weight of the low melting point fiber of fineness of 2 to 10 denier as a binder, miscellaneous fiber (Based on the active ingredient content) 10 to 50% by weight of the composition is configured to have a surface density of 100 ~ 4000g / ㎡.

본 발명에서는 매트릭스 파이버 비중에서 잡섬유 파이버를 10~40% 사용하여 파이버의 불균일성을 증대시킴으로 인해 흡차음 성능이 향상되도록 구성하였다. In the present invention, by using the mixed fiber fibers 10 to 40% in the specific gravity of the matrix fiber, the sound absorbing and insulating performance is improved by increasing the nonuniformity of the fiber.

즉, 입사하는 음향의 방해작용으로 음에너지가 열에너지로 변환되는 과정에서 파이버의 불균일성이 증가하고 파이버의 섬도가 작을수록 음향특성이 커지게 되는 원리를 이용한 것이다. In other words, in the process of converting sound energy into thermal energy due to the interference of the incident sound, the nonuniformity of the fiber increases and the smaller the fineness of the fiber, the greater the acoustic characteristics.

또한, 흡음재 본층의 한쪽면 또는 양쪽면 표면에 PET 부직포가 적층되어 부착된다. Moreover, PET nonwoven fabric is laminated | stacked and affixed on the surface of one side or both sides of a sound absorption material main layer.

이러한 표면처리용 부직포는 흡음재로부터 분진 발생을 억제하기 위한 것으로, 흡음재의 표면에 얇은 표면처리용 부직포가 부착되어 마감됨으로써 흡음재 표면에서의 분진 발생을 미연에 방지할 수 있다. The nonwoven fabric for surface treatment is for suppressing dust generation from the sound absorbing material. A thin surface treatment nonwoven fabric is attached to the surface of the sound absorbing material and finished to prevent dust generation on the surface of the sound absorbing material.

상기 PET 부직포는 기재로서 섬도 4~15 데니어의 고융점 PET 파이버 50~80중량%와, 바인더로 섬도 2~10 데니어의 저융점 파이버 20~50중량%를 혼용하여 면밀도 10~100g/㎡이 되도록 제조한 PET 부직포를 사용할 수 있다. The PET nonwoven fabric is a 50 to 80% by weight high melting point PET fiber of fineness of 4 to 15 denier as a substrate, and 20 to 50% by weight of a low melting point fiber of fineness of 2 to 10 denier as a binder to a surface density of 10 to 100g / ㎡ The prepared PET nonwoven fabric can be used.

이와 같은 PET 부직포와 흡음재 본층을 부착하기 위해서는 공지의 열융착 방 법이 적용된다.In order to attach the PET nonwoven fabric and the sound absorbing material main layer, a known heat fusion method is applied.

본 발명의 PET 흡음재의 흡음재 본층은 소정 배열의 섬유 웹(web;박막)이 적층되어 이루어진 것으로, 통상적인 견면 제조 공정으로 제조하는 바, 저융점 파이버 바인더(LMF)와 고융점 파이버(SF)를 소정의 섬도비와 중량비로 혼합하여 얇은 층으로 쌓은 후 열융착하여 제조하게 된다.The sound absorbing material main layer of the PET sound absorbing material of the present invention is formed by stacking a web of fibers (thin film) in a predetermined arrangement, and is manufactured by a conventional plush manufacturing process, and a low melting point fiber binder (LMF) and a high melting point fiber (SF) are formed. It is prepared by mixing in a predetermined fineness ratio and weight ratio, stacked in a thin layer, and thermally fused.

예를 들면, 저융점 파이버 바인더와 고융점 파이버를 혼합한 후 개섬하는 단계, 시트 모양의 섬유 웹으로 뽑아내고 섬유 웹을 소정의 배열로 쌓아주는 카딩(carding) 단계를 거치게 된다.For example, a low melting point fiber binder and a high melting point fiber are mixed and opened, and a carding step is performed in which a sheet-like fibrous web is pulled out and stacked in a predetermined arrangement.

또한, 후속 공정으로서, 예열기(pre heater)에서 적층된 웹을 일정 수준 건조시키는 예열 단계를 거친 뒤, 열 접착용 오븐(heat bonding oven) 또는 발열조(heating chamber) 내에서 열풍을 가하여 건조 및 성형하는 가열 단계를 거치며, 이후 압착 롤러(press roller)로 통과시켜 두께 조정하는 압착 성형 단계, 냉각 롤러(cooling roller)로 통과시켜 냉각 및 최종 두께 조정하는 냉각 및 두께 조정 단계, 커터에서 규격별로 절단하는 절단 단계 등을 차례로 거치게 된다. Further, as a subsequent process, after a pre-heating step of drying the laminated web in a pre heater to a certain level, it is dried and formed by applying hot air in a heat bonding oven or a heating chamber. After the heating step to pass through, then press molding roller (press roller) to adjust the thickness, passing through the cooling roller (cooling roller) to pass through the cooling and cooling (cooling and thickness adjustment step to adjust the final thickness, cut by the specification by the cutter The cutting step is sequentially performed.

이러한 제조 공정에서 열을 가한 후 압착하게 되면, 융착된 저융점 파이버 바인더에 의해 파이버 및 견면의 웹 층들이 아래 위로 그리고 전체적으로 결속됨과 동시에 일정한 두께의 흡음재가 만들어지며, 이때 저융점 파이버 바인더는 열에 의해 녹아 붙게 되면서 파이버 및 웹 층들을 서로 잡아주는 역할을 하게 된다. In this manufacturing process, when heat is applied and compressed, the fused low-melting fiber binder bonds the fibers and the web layers up and down, and at the same time, a sound-absorbing material having a constant thickness is formed, wherein the low-melting fiber binder is heated by heat. As they melt, they hold the fiber and web layers together.

이때의 저융점 바인더 파이버는 PET/PE가 혼합된 것, PET/PP가 혼합된 것, PET/PA가 혼합된 것, PET/PET가 혼합된 것중 선택된 어느 하나의 것을 사용할 수 있 In this case, the low-melting binder fiber may be any one selected from mixed PET / PE, mixed PET / PP, mixed PET / PA, and mixed PET / PET.

이와 같은 본 발명을 실시예에 의거하여 보다 구체적으로 설명하겠는 바. 본 발명이 다음 실시예에 의하여 한정되는 것은 아니다.This invention will be described in more detail based on Examples. The present invention is not limited by the following examples.

실시예Example

SF 6De 65중량%와 LMF 4De 35중량%의 조성비를 가진 면밀도 1200g/㎡, 두께 20mm의 PET 견면 1 layer로 된 흡음재를 기준 샘플(비교 샘플)로 정한다. A sound absorbing material having a surface density of 1200 g / m 2 and a thickness of 20 mm PET having a composition ratio of 65% by weight of SF 6De and 35% by weight of LMF 4De was defined as a reference sample (comparative sample).

이와 대비되는 샘플로는 SF 6De 45중량%, 잡섬유 파이버 20중량%, LMF 4De 35중량%를 혼용하여 같은 두께와 중량을 가진 잡사 샘플을 만들었다. In contrast, samples of SF 6De 45 wt%, mixed fiber 20 wt%, and LMF 4De 35 wt% were mixed to make a mixed yarn sample having the same thickness and weight.

두 개의 샘플 모두 표면에 면밀도 25g/㎡의 부직포를 부착하였다. Both samples adhered a nonwoven fabric having a surface density of 25 g / m 2 on the surface.

흡음률 실험 방법은 간기 잔향실에서 840mm×840mm의 샘플을 이용하여 각 샘플의 흡음률을 측정하였다. In the sound absorption test method, the sound absorption rate of each sample was measured using a sample of 840 mm × 840 mm in the interstitial reverberation chamber.

이에 대한 결과는 도 2에 나타내었다. The results are shown in FIG. 2.

흡음률 결과를 보면, 관심 주파수 영역인 400~6300Hz에서 잡사를 사용한 샘플의 흡음성능이 우수함을 보여주고 있다. The results of the sound absorption rate show that the sound absorption performance of the sample using the mixed yarn in the frequency region of interest 400 ~ 6300Hz is excellent.

차음 실험 방법은 APAMAT-Ⅱ를 이용하여 수행하였으며, 여기에 사용한 플로우카페트는 BCF 13oz에 PE 500g 코팅된 것을 사용하여 측정하였다. Sound insulation test method was performed using APAMAT-II, the flow carpet used here was measured using a 500 g PE coated in 13oz BCF.

이에 대한 실험 결과는 도 3에 나타내었다. Experimental results are shown in FIG. 3.

차음 실험 결과에서 볼 수 있는 바와 같이 관심 주파수 영역인 400~6300Hz에서 잡사를 사용한 샘플의 차음성능이 우수함을 보여주고 있다. As can be seen from the sound insulation test results, the sound insulation performance of the sample using the mixed yarn in the frequency region of interest 400 ~ 6300Hz is excellent.

이상으로 본 발명에 따른 특정의 바람직한 실시예에 대해서 도시하고 설명하 였다. In the above, specific preferred embodiments according to the present invention have been illustrated and described.

그러나, 본 발명이 상술한 실시예로 한정되는 것은 아니며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자라면 이하의 특허청구범위에 기재된 본 발명의 기술적 사상의 요지를 벗어남이 없이 얼마든지 다양하게 변경 실시할 수 있을 것이다.However, the present invention is not limited to the above-described embodiments, and a person of ordinary skill in the art may vary without departing from the spirit of the technical idea of the present invention described in the claims below. Will be able to carry out the change.

이상에서 설명한 바와 같이, 본 발명에 따른 잡사 펠트를 이용한 PET 흡음재에 의하면, PET 흡음재를 구성하는 매트릭스 파이버에 적당한 양의 잡사 펠트를 섞은 후 웹 적층제로 제조함으로써, 재료비 절감과 동시에 흡음 및 차음 성능을 향상시킬 수 있는 효과가 있다. As described above, according to the PET sound absorbing material using the hybrid yarn felt according to the present invention, by mixing the appropriate amount of the hybrid yarn felt into the matrix fiber constituting the PET sound absorbing material, and then made into a web laminate, the sound absorption and sound insulation performance while reducing the material cost There is an effect that can be improved.

또한, 펠트의 표면에 PET 부직포를 부착하여 마감함으로써, 표면에서의 단섬유 PET가 박리되는 것을 방지할 수 있고, 분진 발생을 미연에 방지할 수 있는 효과가 있다. In addition, by adhering and finishing the PET nonwoven fabric on the surface of the felt, it is possible to prevent the short-fiber PET from peeling off the surface, it is possible to prevent the generation of dust in advance.

이러한 본 발명의 PET 흡음재는 자동차 및 건축분야의 흡음재로서 널리 활용될 수 있으며, 특히 자동차에서 대쉬 인슐레이션 이너(dash insulation inner), 플로어 카페트(floor carpet), 루프 라이너(roof liner), 루프 라이너 패드(roof liner pad), 후드 인슐레이터(hood insulator) 및 각종 트림 패드(trim pad) 등에 널리 적용이 가능하다.Such a PET sound absorbing material of the present invention can be widely used as a sound absorbing material in the field of automobiles and constructions, in particular dash insulation inner (dash insulation inner), floor carpet (floor carpet), roof liner (roof liner), roof liner pad ( Widely applicable to roof liner pads, hood insulators and various trim pads.

Claims (4)

기재로 섬도 4~15 데니어의 고융점 PET 파이버 40~70중량%, 바인더로 섬도 2~10 데니어의 저융점 파이버 15~50중량%, 아크릴, 면, 이불, 옷을 포함하는 재활용 폐섬유 파이버인 잡섬유 파이버 10~50중량% 를 혼용하여 면밀도 100~4000g/㎡으로 제조된 흡음재 본층과;It is recycled waste fiber fiber including 40-70 weight% of high melting point PET fiber of fineness 4-15 denier as base material, 15-50 weight% of low melting point fiber of fineness 2-10 denier with binder, acrylic, cotton, duvet, clothes Sound-absorbing material main layer manufactured by mixing 10-50% by weight of mixed fiber fibers with a surface density of 100-4000 g / m 2; 기재로 섬도 4~15 데니어의 고융점 PET 파이버 50~80중량%, 바인더로 섬도 2~10 데니어의 저융점 파이버 20~50중량%를 혼용하여 면밀도 10~100g/㎡으로 제조되어 상기 흡음재 본층의 일표면 또는 양표면에 부착되는 PET 부직포; 50 to 80% by weight of a high melting point PET fiber having a fineness of 4 to 15 deniers as a substrate and 20 to 50% by weight of a low melting point fiber having a fineness of 2 to 10 deniers as a binder is prepared at a surface density of 10 to 100 g / m 2, PET nonwovens attached to one or both surfaces; 로 구성된 것을 특징으로 하는 잡사 펠트를 이용한 PET 흡음재. PET sound absorbing material using a mixed yarn felt, characterized in that consisting of. 삭제delete 삭제delete 삭제delete
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CN102337628A (en) * 2010-07-26 2012-02-01 上海新安汽车隔音毡有限公司 Manufacture method for low-density superfine fibrofelt
KR101152187B1 (en) * 2011-06-22 2012-06-15 (주)대한솔루션 Hollow fiber acoustic absorbent and method for manufacturing the same
KR101272551B1 (en) * 2011-06-27 2013-06-11 엔브이에이치코리아(주) Manufacturing method of multi-layer sound-absorbing material for vehicle
KR101325523B1 (en) * 2012-01-05 2013-11-07 (주)대한솔루션 Improved sound absorption trim for vehicle
WO2014073859A1 (en) * 2012-11-06 2014-05-15 현대자동차 주식회사 Method for molding highly heat-resistant sound absorbing and screening material
CN104695135A (en) * 2013-12-04 2015-06-10 上海杰事杰新材料(集团)股份有限公司 Biodegradable non-woven fabric and preparation method thereof

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US11862135B2 (en) 2019-12-26 2024-01-02 Hyundai Motor Company Polyester sound absorption material, method of manufacturing molded product using same, and molded product manufactured thereby

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