KR20230061601A - Sound absorption materials made of superfine fibers for vehicles - Google Patents
Sound absorption materials made of superfine fibers for vehicles Download PDFInfo
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- KR20230061601A KR20230061601A KR1020210145221A KR20210145221A KR20230061601A KR 20230061601 A KR20230061601 A KR 20230061601A KR 1020210145221 A KR1020210145221 A KR 1020210145221A KR 20210145221 A KR20210145221 A KR 20210145221A KR 20230061601 A KR20230061601 A KR 20230061601A
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- sound absorption
- sound
- sound absorbing
- absorbing material
- fibers
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- 239000004744 fabric Substances 0.000 claims abstract description 8
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Classifications
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- 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
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- B32B5/265—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer
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- B32B5/265—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer
- B32B5/266—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers
- B32B5/268—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 characterised by one fibrous or filamentary layer being a non-woven fabric layer next to one or more non-woven fabric layers characterised by at least one non-woven fabric layer that is a melt-blown fabric
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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
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
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- 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
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/14—Mixture of at least two fibres made of different materials
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2306/00—Other features of vehicle sub-units
- B60Y2306/09—Reducing noise
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Mechanical Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
본 발명은 자동차용 PET 극세사 흡음재에 관한 것으로, 더욱 상세하게는 PET 극세사, 다엽 중공사(Multi-lobal Fiber), 콘주(Conjugate) 중공사, 그리고 LM 파이버(Low-melting Polyester Fiber)를 혼합하여 흡음 시트를 제작함으로써, 폴리우레탄이나 일반 PET를 이용한 기존 흡음재보다 우수한 흡음 성능을 가진 흡음재를 얻을 수 있게 한 것이다. 이때, 상기 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버의 혼합 비율에 따라 자동차의 차종이나 흡음재의 장착 위치에 따라 다른 흡음 성능에 맞게 흡음 시트를 제작할 수 있게 한 것이다.The present invention relates to a PET microfiber sound absorbing material for automobiles, and more particularly, to absorb sound by mixing PET microfiber, multi-lobal fiber, conjugate hollow fiber, and LM fiber (Low-melting Polyester Fiber) By manufacturing the sheet, it is possible to obtain a sound absorbing material having better sound absorbing performance than conventional sound absorbing materials using polyurethane or general PET. At this time, according to the mixing ratio of the PET microfiber, the multi-leaf hollow fiber, the cone hollow fiber, and the LM fiber, it is possible to manufacture a sound-absorbing sheet according to different sound-absorbing performance according to the vehicle model or the mounting position of the sound-absorbing material.
일반적으로 자동차에는 엔진룸에서 발생하는 소음이나 자동차 주변에서 발생하는 소음, 주행할 때 자동차 하부에서 발생한 소음 등이 자동차 실내로 유입하지 않도록 여러 곳에 흡음재가 장착된다. 이러한 흡음재는, [도 1]과 같이, 자동차에서도 후드 인슐레이션(B), 헤드라이너(H), 러기지 트레이(T) 트렁크 플로어(F) 등 다양한 곳에서 흡음재로 사용한다. 이때, 사용되는 흡음재의 기재로는, 아래의 (특허문헌 1) 내지 (특허문헌 3)과 같이, 성형성과 제조가 쉽고 흡음 성능이 우수한 폴리우레탄 폼 시트가 주로 사용된다.In general, sound absorbing materials are installed in various places in an automobile to prevent noise generated from an engine room, noise generated around the vehicle, and noise generated from a lower portion of the vehicle while driving from entering the vehicle interior. As shown in FIG. 1, these sound absorbing materials are used as sound absorbing materials in various places such as hood insulation (B), headliner (H), luggage tray (T) and trunk floor (F) in automobiles. At this time, as a base material of the sound absorbing material used, as shown in (Patent Document 1) to (Patent Document 3) below, a polyurethane foam sheet having excellent sound absorption performance and easy moldability and manufacturing is mainly used.
(특허문헌 1) 한국등록특허 제10-2140941호(Patent Document 1) Korea Patent Registration No. 10-2140941
폴리우레탄 흡음재를 발포 성형할 때 에어로겔 파우더를 첨가함으로써, 단열성과 경량화 소재로 잘 알려진 에어로겔을 통해 중량 증가를 최소화하면서도 단열 효과를 높일 수 있게 한 자동차용 폴리우레탄 흡음재 제조방법 및 그 폴리우레탄 흡음재를 제공하는 데 그 목적이 있다. 특히, 에어로겔을 미리 폴리올에 혼합하여 마스터 배치 원액을 제조하고, 여기에 폴리올을 추가하여 농도를 조절한 다음 MDI(Methylene Diphenyl Diisocyanate)를 혼합하여 발포할 수 있게 구성하므로, 에어로겔의 농도 조절을 쉽게 하면서도 분산 효과를 높여 균질한 흡차음 성능을 얻을 수 있게 한 자동차용 폴리우레탄 흡음재 제조방법 및 그 폴리우레탄 흡음재를 제공하는 데 다른 목적이 있다.Provision of a method for manufacturing a polyurethane sound-absorbing material for automobiles, in which airgel powder, which is well known as a heat-insulating and lightweight material, can be minimized while increasing the insulation effect by adding airgel powder when foaming and molding polyurethane sound-absorbing material, and providing the polyurethane sound-absorbing material Its purpose is to In particular, airgel is mixed with polyol in advance to prepare a master batch stock solution, and polyol is added to adjust the concentration, and then MDI (Methylene Diphenyl Diisocyanate) is mixed to foam. Another object is to provide a method for manufacturing a polyurethane sound absorbing material for automobiles capable of obtaining homogeneous sound absorbing and insulating performance by increasing the dispersion effect, and to provide the polyurethane sound absorbing material.
(특허문헌 2) 한국등록특허 제10-1797462호(Patent Document 2) Korean Patent Registration No. 10-1797462
자동차 흡음재용 폴리우레탄 폼 조성물, 이를 이용한 자동차 흡음재 및 그 제조방법에 관한 것으로, 구체적으로는 바이오 폴리올 및 바이오 이소시아네이트를 포함하는 자동차 흡음재용 폴리우레탄 폼 조성물, 이를 이용하여 제조된 자동차 흡음재와 그 제조방법에 관한 것이다. 이러한 제조방법으로 제공하는 폴리우레탄 폼 조성물은 바이오 폴리올 및 바이오 이소시아네이트를 사용하여 기존의 석유계 원료를 대체함으로써, 환경 친화적인 폴리우레탄 폼을 제조할 수 있을 뿐만 아니라, 흡음률과 강도가 기존의 석유계 폴리올 또는 석유계 이소시아네이트를 사용한 경우에 비해 동등 또는 우수하며, 환경친화적인 자동차용 흡음재로 사용될 수 있고, 또한 자동차 시트나 쿠션 시트 백 등으로도 유용하게 사용될 수 있다.It relates to a polyurethane foam composition for an automobile sound absorbing material, an automobile sound absorbing material using the same, and a method for manufacturing the same, specifically, a polyurethane foam composition for an automobile sound absorbing material containing bio polyol and bio isocyanate, an automobile sound absorbing material manufactured using the same, and a manufacturing method thereof. It is about. The polyurethane foam composition provided by this manufacturing method uses bio polyol and bio isocyanate to replace existing petroleum-based raw materials, thereby producing environmentally friendly polyurethane foam, as well as having better sound absorption and strength than conventional petroleum-based materials. It is equivalent to or superior to the case of using polyol or petroleum-based isocyanate, and can be used as an environmentally friendly sound absorbing material for automobiles, and can also be usefully used as automobile seats or cushion seat bags.
(특허문헌 3) 한국등록특허 제10-1391915호(Patent Document 3) Korea Patent Registration No. 10-1391915
가격 경쟁력 및 제조가 간편하면서 기존 흡음재의 흡음력과 유사한 흡음력을 형성하되, 차량에 탈, 부착할 수 있는 폴리우레탄 필름을 적용한 조립형 차량용 흡음재 제조방법 및 이를 이용해 제작된 폴리우레탄 필름을 적용한 조립형 차량용 흡음재에 관한 것으로, 금형의 상, 하측 금형틀에 제1, 2 폴리우레탄 필름을 각각 고정하고, 하측 금형틀에 고정한 제2 폴리우레탄 필름 위에 액상의 우레탄 폼 액의 주입 및 상측 금형을 닫은 후, 열을 가하여 우레탄 폼 액을 발포시켜 제1, 2 폴리우레탄 필름 사이에서 우레탄 폼 액을 발포시켜 우레탄 폼의 상, 하측에 제1, 2 폴리우레탄 필름이 접착되어 있는 폴리우레탄 필름을 적용한 조립형 차량용 흡음재를 제조함으로써, 제1, 2 폴리우레탄 필름 사이에 우레탄 폼을 직접 발포 성형하여 소음의 흡음력을 그대로 유지하면서 커버에 탈, 부착 가능한 조립형태의 흡음재를 제공할 수 있고, 제1, 2 폴리우레탄에 의해 흡음재를 커버에 부착시 밀착성이 향상되어 소음의 흡음력을 향상시킬 수 있으며, 두께를 얇게 형성하더라도 흡음력이 저하되지 않으면서 경량화를 구현하여 가격 경쟁력이 향상되는 효과 및 우레탄 폼을 기반으로 제작되되 조립형으로 형성된 흡음재를 제공하여 이동성 및 작업성을 향상시킬 수 있는 폴리우레탄 필름을 적용한 조립형 차량용 흡음재 제조방법 및 이를 이용해 제작된 폴리우레탄 필름을 적용한 조립형 차량용 흡음재를 제공한다.A method for manufacturing a sound absorbing material for an assembled vehicle using a polyurethane film that can be detached from and attached to a vehicle while forming a sound absorbing power similar to that of existing sound absorbing materials, while being price competitive and easy to manufacture, and for a assembled vehicle using the polyurethane film produced using the same It relates to a sound absorbing material, fixing the first and second polyurethane films to the upper and lower molds of the mold, respectively, and injecting liquid urethane foam onto the second polyurethane film fixed to the lower mold and closing the upper mold, Application of a polyurethane film in which the first and second polyurethane films are adhered to the upper and lower sides of the urethane foam by foaming the urethane foam liquid by applying heat to foam the urethane foam liquid between the first and second polyurethane films For assembled vehicles By manufacturing the sound-absorbing material, it is possible to provide an assembled sound-absorbing material that can be detached from and attached to the cover while maintaining the sound-absorbing power of noise by directly foaming and molding the urethane foam between the first and second polyurethane films, and the first and second polyurethane When the sound absorbing material is attached to the cover, the adhesion of the sound absorbing material can be improved to improve the sound absorbing power of noise, and even if the thickness is formed thinly, the sound absorbing power is not lowered and the price competitiveness is improved by implementing weight reduction, and it is manufactured based on urethane foam. Provided is a method for manufacturing a sound absorbing material for a prefabricated vehicle using a polyurethane film capable of improving mobility and workability by providing a sound absorbing material formed in a prefabricated type, and a sound absorbing material for a prefabricated vehicle using the polyurethane film manufactured using the same.
이처럼 기존의 자동차용 흡음재는 폴리우레탄을 기재로 사용함에 따라 다음과 같은 문제가 발생한다.As described above, conventional sound absorbing materials for automobiles use polyurethane as a base material, resulting in the following problems.
(1) 폴리우레탄은 성형성이 우수하고 압축 탄성력이 우수하여 흡음 성능이 우수하다.(1) Polyurethane has excellent moldability and excellent compression elasticity, so it has excellent sound absorption performance.
(2) 그러나, 폴리우레탄은 현재 주가 되어가는 전기차나 하이브리드차에서 사용되는 구동 모터의 소음을 제대로 흡수할 수 없어 자동차의 주행환경을 해치는 한 가지 요인으로 작용한다.(2) However, polyurethane cannot properly absorb the noise of the driving motor used in electric or hybrid vehicles, which are currently becoming the mainstream, and acts as a factor that harms the driving environment of the vehicle.
(3) 이에, 압축성능이 우수할 뿐만 아니라 폴리우레탄보다 우수한 흡음재 개발이 필요하다.(3) Therefore, it is necessary to develop a sound absorbing material superior to polyurethane as well as having excellent compression performance.
본 발명은 이러한 점을 고려한 것으로, PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버 등 서로 다른 종류의 파이버를 혼합하여 흡음 시트를 제작함으로써, 서로 다른 형상과 모양 그리고 구조 등의 조합을 통해 압축성능과 흡음 성능을 향상할 수 있게 한 자동차용 PET 극세사 흡음재를 제공하는데 그 목적이 있다.The present invention takes this point into consideration, and by producing a sound-absorbing sheet by mixing different types of fibers such as PET microfiber, multi-leaf hollow fiber, cone hollow fiber, and LM fiber, through a combination of different shapes, shapes, and structures, etc. The purpose is to provide a PET microfiber sound absorbing material for automobiles capable of improving compression performance and sound absorption performance.
특히, 본 발명은 이처럼 다른 종류의 파이버를 다른 중량% 비율로 혼합함에 따라 다양한 흡음 성능과 압축 성능을 통해 흡음재가 장착되는 위치에서 요구되는 다양한 흡음 성능을 가진 자동차용 흡음재를 제작하여 사용할 수 있게 한 자동차용 PET 극세사 흡음재를 제공하는데 다른 목적이 있다.In particular, the present invention makes it possible to manufacture and use a sound absorbing material for automobiles having various sound absorbing performance required at the position where the sound absorbing material is mounted through various sound absorbing performance and compression performance by mixing different types of fibers in different weight % ratios Another object is to provide a PET microfiber sound absorbing material for automobiles.
또한, 본 발명은 이처럼 다른 종류의 파이버를 혼합하여 제작된 흡음 시트의 양쪽 면 중 적어도 한쪽 면에 면밀도가 20~40gms인 스펀본드 부직포 또는 멜트 블로운 부직포를 부착하여 일체로 제작함으로써, 흡음재의 구조적 강성을 보강하여 흡음재의 형상과 모양을 유지하게 하면서도 쉽게 변형하거나 찢어지지 않게 하여 오랫동안 사용할 수 있게 한 자동차용 PET 극세사 흡음재를 제공하는데 또 다른 목적이 있다.In addition, the present invention is integrally manufactured by attaching a spunbond nonwoven fabric or melt blown nonwoven fabric having an areal density of 20 to 40 gms to at least one side of both sides of the sound absorbing sheet prepared by mixing different types of fibers, Another object is to provide a PET microfiber sound absorbing material for automobiles that can be used for a long time by not being easily deformed or torn while maintaining the shape and shape of the sound absorbing material by reinforcing the rigidity.
이러한 목적을 달성하기 위한 본 발명에 따른 자동차용 PET 극세사 흡음재는, 부직포 사이에 흡음 시트가 삽입되어 이루어지는 자동차용 PET 극세사 흡음재에서,PET microfiber sound absorbing material for automobiles according to the present invention for achieving this object is a PET microfiber sound absorbing material for automobiles formed by inserting a sound absorbing sheet between nonwoven fabrics,
상기 흡음 시트는,The sound-absorbing sheet,
굵기가 0.7De인 PET 극세사; PET microfiber having a thickness of 0.7De;
굵기가 4De인 다엽 중공사(multi-lobal fiber);A multi-lobal fiber having a thickness of 4De;
굵기가 3De인 콘주(Conjugate) 중공사; 및Conjugate hollow fiber having a thickness of 3De; and
굵기가 4De인 LM 파이버(low melting polyester fiber);로 이루어진 것을 특징으로 한다.It is characterized in that it is made of; LM fiber (low melting polyester fiber) having a thickness of 4De.
특히, 상기 흡음 시트는, 면밀도가 580~620gsm인 것을 특징으로 한다.In particular, the sound-absorbing sheet is characterized in that the surface density is 580 ~ 620gsm.
또한, 상기 부직포는, 면밀도가 20~40gms인 스펀본드 부직포 또는 멜트 블로운 부직포인 것을 특징으로 한다.In addition, the nonwoven fabric is characterized in that it is a spunbond nonwoven fabric or a melt blown nonwoven fabric having an areal density of 20 to 40 gms.
마지막으로, 상기 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버는, 각각 같은 중량비%로 혼합된 것을 특징으로 한다.Finally, the PET microfibers, multi-leaf hollow fibers, conjugated hollow fibers, and LM fibers are mixed in the same weight ratio, respectively.
본 발명에 따른 자동차용 PET 극세사 흡음재는 다음과 같은 효과가 있다.The PET microfiber sound absorbing material for automobiles according to the present invention has the following effects.
(1) 상기 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버를 혼합하여 흡음 시트를 제작함에 따라, 이들 파이버의 형상과 모양이 각각 다름에 따라 이들의 조합을 통해 압축 성능을 높이면서도 흡음 성능을 개선할 수 있다.(1) As a sound-absorbing sheet is produced by mixing the PET microfiber, multi-leaf hollow fiber, conjugated hollow fiber, and LM fiber, the shape and shape of these fibers are different, so the compression performance is improved while absorbing sound through their combination performance can be improved.
(2) 특히, 이들 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버는 서로 혼합하는 중량% 비율에 따라 흡음 성능과 압축 성능을 다르게 조절할 수 있다. 이는, 자동차의 차종이 다르거나 자동차에 장착되는 흡음재의 장착 위치에 따라 다르게 요구되는 흡음 성능에 맞춰 혼합 비율을 조절하여 원하는 흡음 성능을 얻을 수 있다.(2) In particular, these PET microfibers, multi-leaf hollow fibers, conjugated hollow fibers, and LM fibers can be differently adjusted in sound absorption performance and compression performance according to the weight % ratio of mixing with each other. Desired sound absorbing performance may be obtained by adjusting the mixing ratio according to the sound absorbing performance required differently depending on the type of vehicle or the mounting position of the sound absorbing material mounted on the vehicle.
(3) 흡음 시트에는 양쪽 면 중 적어도 한쪽 면에 면밀도가 20~40gms인 스펀본드 부직포 또는 멜트 블로운 부직포를 부착함으로, 흡음재의 구조적 강성을 보강하여 그 형상과 모양이 쉽게 변형하지 않게 하면서도 쉽게 찢어지지 않게 하여 오랫동안 사용할 수 있다.(3) By attaching a spunbond nonwoven fabric or melt blown nonwoven fabric having an areal density of 20 to 40 gms on at least one side of both sides of the sound absorbing sheet, the structural rigidity of the sound absorbing material is reinforced so that its shape and shape are not easily deformed and easily torn. It can be used for a long time without losing.
(4) 또한, 이러한 부직포는 흡음 시트에 핫멜트 필름과 같은 열가소성 수지 접착제를 이용하여 열융착 방식으로 부착함으로, 쉽고 편리하게 일체로 성형할 수 있다.(4) In addition, this nonwoven fabric can be easily and conveniently integrally molded by attaching the sound-absorbing sheet to the sound-absorbing sheet using a thermoplastic resin adhesive such as a hot-melt film by heat-sealing.
[도 1]은 자동차에서 흡음재가 장착되는 위치를 보여주는 자동차의 측면도이다.
[도 2]는 본 발명에 따른 자동차용 PET 극세사 흡음재의 구성을 보여주는 분해사시도이다.
[도 3]은 본 발명에 따른 자동차용 PET 극세사 흡음재의 실물을 보여주는 사진이다.
[도 4]는 본 발명에 따른 자동차용 PET 극세사 흡음재의 구성을 보여주려고 확대한 사진이다.
[도 5]는 비교예 1 및 비교예 2 그리고 본 발명에 따른 실시예에 대해 주파수 변화에 따른 흡음 성능 결과를 보여주는 그래프이다.[Figure 1] is a side view of a vehicle showing a position in which a sound absorbing material is mounted in the vehicle.
[Figure 2] is an exploded perspective view showing the configuration of a PET microfiber sound absorbing material for automobiles according to the present invention.
[Figure 3] is a photograph showing the real thing of the PET microfiber sound absorbing material for automobiles according to the present invention.
[Figure 4] is an enlarged picture to show the configuration of the PET microfiber sound absorbing material for automobiles according to the present invention.
[Figure 5] is a graph showing the sound absorption performance results according to the frequency change for Comparative Example 1 and Comparative Example 2 and Examples according to the present invention.
이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 더욱 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 안 되며, 발명자는 그 자신의 발명을 최고의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 따라 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, the terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors should properly define the concept of terms in order to best explain their invention. According to the principle that it can be interpreted as meaning and concept consistent with the technical spirit of the present invention.
따라서 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원 시점에서 이들을 대체할 수 있는 다양한 균등물과 변형례가 있을 수 있음을 이해하여야 한다.Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only one of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention, various equivalents that can replace them at the time of this application It should be understood that there may be variations.
[자동차용 PET [PET for automobiles 극세사microfiber 흡음재] sound absorbing material]
자동차용 PET 극세사 흡음재에는, 흡음 시트(10)와 이 흡음 시트(10)의 양쪽 면 중 적어도 한쪽 면에 일체로 부착되는 부직포가(20) 포함된다.The PET microfiber sound absorbing material for automobiles includes a
특히, 상기 흡음 시트(10)는 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버를 혼합하여 제조함에 따라 이들 파이버의 단면 형상과 모양 그리고 구조의 조합에 따라 압축성능과 흡음 성능을 향상할 수 있게 한 것이다.In particular, as the sound-absorbing
이때, 상기 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버는 각각 같은 중량% 비율로 혼합하여 흡음 시트(10)를 제조함으로써, 주파수 1,000[㎐] 이상의 영역에서 기존 PET 일반사나 폴리우레탄을 이용하는 흡음재보다 우수한 흡음 성능을 얻을 수 있게 한 것이다.At this time, the PET microfibers, multi-leaf hollow fibers, cone hollow fibers, and LM fibers are mixed in the same weight % ratio to prepare the sound-absorbing
그리고 상기 부직포(20)로는 면밀도가 20~40gms인 스펀본드 부직포나 멜트 블로운 부직포를 이용함으로써, 흡음재에 요구되는 구조적 강성을 충분히 확보할 수 있게 하면서도 쉽게 찢어지거나 파손되지 않게 하여 오랫동안 사용할 수 있게 한 것이다.And, as the
이하, 이러한 구성에 관해 첨부도면을 참조하여 더욱 상세하게 설명하면 다음과 같다.Hereinafter, this configuration will be described in more detail with reference to the accompanying drawings.
가. 흡음 시트go. sound absorbing sheet
흡음 시트(10)는, [도 2]와 같이, 후술할 두 장의 부직포(20) 사이에 삽입되어 일체로 형성된다.The sound-absorbing
이때, 상기 흡음 시트(10)는, [도 3] 및 [도 4]와 같이, 굵기가 0.7De인 PET 극세사, 굵기가 4De인 다엽 중공사(Multi-lobal Fiber), 굵기가 3De인 콘주(Conjugate) 중공사, 그리고 굵기가 4De인 LM 파이버(Low Melting Polyester Fiber)를 혼합하여 사용함으로써, 이들 파이버의 단면 형상과 모양 그리고 구조가 하나로 조합하면서 압축 성능과 흡음 성능을 높일 수 있게 제작된다.At this time, the sound-absorbing
여기서, 상기 PET 극세사는, [도 4]와 같이, PET를 4De 굵기로 뽑아서 만든 극세사로, 면보다 흡수율이 우수할 뿐만 아니라 섬유조직을 매우 촘촘하게 직조할 수 있는 것으로 잘 알려졌다. Here, the PET microfiber is a microfiber made by spun PET with a thickness of 4De, as shown in [Fig. 4], and it is well known that not only is it superior to cotton in water absorption but also it can be woven very densely.
또한, 상기 다엽 중공사는, [도 4]와 같이, 중앙이 관 형태로 비어있는 중공사이며, 외면에는 폭 단면에서 볼 때 여러 개의 엽이 달린 중공사를 말한다. 특히, 다엽 중공사는 엽의 개수가 4~8개, 바람직하게는 6엽 중공사를 이용함으로써, 탄력성과 부피 안정성을 형성하여 일정한 힘이 가해졌다가 제거하더라도 압축 변형율이 우수한 흡음 시트를 얻을 수 있다.In addition, as shown in [Fig. 4], the multi-lobed hollow fiber is a hollow fiber with a hollow center in a tubular shape, and refers to a hollow fiber with several lobes on the outer surface when viewed in a cross-sectional width. In particular, by using 4 to 8 lobes, preferably 6 hollow fibers, the multi-leaf hollow fiber forms elasticity and volume stability, so that even if a certain force is applied and then removed, a sound-absorbing sheet having excellent compression strain can be obtained. .
그리고 콘주(Conjugate) 중공사는, [도 4]와 같이, 섬유의 중앙이 빈 중공사로, 섬유의 단면을 채우지 않고 중공형태를 유지하면서 이중 플리머(Polymer)의 복합방사 기술에 의해 형성되는 3차원 구조의 입체 클림프(Crimp)가 우수한 벌키성 및 탄성을 발휘하며 가볍고 보온성이 뛰어난 것으로 잘 알려졌다.In addition, as shown in [Fig. 4], the conjugate hollow fiber is a hollow fiber in which the center of the fiber is empty, and it is formed by the conjugate spinning technology of double polymers while maintaining the hollow shape without filling the cross section of the fiber. Three-dimensional It is well known that the three-dimensional crimp of the structure exhibits excellent bulkiness and elasticity, and is lightweight and has excellent heat retention.
마지막으로, LM 파이버(low melting polyester fiber)는, [도 4]와 같이, 접착제 등으로 사용되는 단섬유로, 성형성이 우수할 뿐만 아니라 가벼우면서도 흡음 성능이 우수한 것으로 잘 알려졌다.Finally, LM fiber (low melting polyester fiber) is a short fiber used as an adhesive, etc., as shown in [Fig.
이처럼 이루어진 본 발명에 따른 흡음 시트(10)는 자동차의 차종이나 한 차종에서도 흡음재가 부착될 위치에서 요구되는 흡음 성능을 고려하여 면밀도가 580~620gsm인 흡음재를 이용하는 것이 바람직하다. 또한, 상기 흡음 시트(10)는 이처럼 요구되는 흡음 성능에 따라 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버의 혼합 중량% 비율을 다르게 제작할 수 있으나, 가장 바람직하게는 이들 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버의 혼합 중량% 비율이 각각 같게 혼합하여 제작하는 것이 바람직하다.In the
나. 부직포me. Non-woven
부직포(20)는, [도 2]와 같이, 상술한 흡음 시트(10)의 양쪽 면 중에서 적어도 한쪽 면에 일체로 부착된다. 이때, 상기 부직포(20)는 핫멜트와 같은 열가소성 수지를 이용함으로써, 흡음 시트(10)를 성형할 때처럼 가해지는 열과 압력으로도 수비게 흡음 시트와 부직포를 일체로 부착하게 해서 제조할 수 있게 구성하는 것이 바람직하다.As shown in FIG. 2, the
또한, 본 발명의 바람직한 실시예에서, 이러한 부직포(20)로는, 면밀도가 20~40gms인 스펀본드 부직포나 멜트 블로운 부직포를 이용하는 것이 바람직하다. 여기서, 스펀본드 부직포(Spun-bonded Fabric)는 주로 폴리프로필렌(Polypropylene)이나 폴리에스터(Polyester)를 방사한 다음 열을 가해 접착하는 부직포로, 자동차용 부품에 많이 사용되는 부직포이다. 상기 멜트 블로운(Melt-brown) 부직포는 상술한 스펀레이드 공정과 유사하나 폴리머가 모세관을 통해 압출될 때 고속의 고온 가스 스트림이 용융된 폴리머 스트림에 충돌하게 해서 제조되는 부직포로, 필터와 보온재 뿐만 아니라 오일 흡수재 등에 이용되는 것으로 잘 알려졌다.Further, in a preferred embodiment of the present invention, as the
이상과 같이 이루어진 본 발명에 따른 자동차용 PET 극세사 흡음재는, [도 3] 및 [도 4]와 같이, 제작되며, 이렇게 제작된 흡음재의 흡음평가와 압축탄성률(두께복원) 결과는 다음과 같다. The PET microfiber sound absorbing material for automobiles according to the present invention made as described above is manufactured as shown in [Figs. 3] and [Fig. 4], and the sound absorption evaluation and compressive elasticity (thickness restoration) results of the sound absorbing material thus produced are as follows.
(흡음 평가)(sound absorption evaluation)
흡음 평가는 면밀도 600gsm인 PET 일반사로 이루어진 흡음재(비교예 1), 면밀도가 1,600gsm인 폴리우레탄으로 제조된 흡음재(비교예 2), 그리고 본 발명에 따라 면밀도 600gsm로 제작된 흡음재(실시예)에 대해 각각 주파수 변화에 따른 흡음평가를 시험하였다. 이때, 실시예를 구성하는 각 구성성분의 함량은 아래의 [표 1]과 같다.Sound absorption evaluation was performed on a sound absorbing material made of PET general yarn having an areal density of 600 gsm (Comparative Example 1), a sound absorbing material made of polyurethane having an areal density of 1,600 gsm (Comparative Example 2), and a sound absorbing material made according to the present invention with an areal density of 600 gsm (Example). For each frequency change, the sound absorption evaluation was tested. At this time, the content of each component constituting the embodiment is shown in [Table 1] below.
구성
composition
PET 극세사
PET microfiber
6엽 중공사
6 leaf hollow fiber
콘주 중공사
conju hollow fiber
굵기
thickness
함량 비율
content ratio
굵기
thickness
함량 비율
content ratio
굵기
thickness
함량 비율
content ratio
굵기
thickness
함량 비율
content ratio
0.72De
0.72De
25중량%
25% by weight
4De
4De
25중량%
25% by weight
3De
3De
25중량%
25% by weight
4De
4De
25중량%
25% by weight
이처럼 이루어진 비교예 1과 비교예 2 그리고 실시예에 대해 주파수(㎐) 변화에 따른 흡음 성능(Sound Absorption Coeifficient)를 측정한 결과는, 아래의 [도 5]와 같다. [도 5]에서, 가로축은 주파수(㎐)를, 세로축은 흡음 성능(Sound Absorption Coeifficient)을, 점선은 실시예의 흡음 성능 그래프를, 검은 선은 비교예 1의 흡음 성능 그래프를, 엷은 파란 선은 비교예 2의 흡음 성능 그래프를 각각 나타낸다. The results of measuring the sound absorption performance (Sound Absorption Coeifficient) according to the frequency (Hz) change for Comparative Example 1, Comparative Example 2, and Examples made as described above are shown in [FIG. 5] below. In [FIG. 5], the horizontal axis is the frequency (Hz), the vertical axis is the sound absorption performance (Sound Absorption Coeifficient), the dotted line is the sound absorption performance graph of Example, the black line is the sound absorption performance graph of Comparative Example 1, and the light blue line is the sound absorption performance graph Each of the sound absorption performance graphs of Comparative Example 2 is shown.
그 결과, [도 5]와 같이, 실시예의 흡음 성능 그래프가 비교예 1 및 비교예 2보다 우수한 것을 알 수 있고, 특히 주파수가 1,000(㎐) 이상에서는 비교예 1 및 비교예 2보다 더욱 우수한 것을 알 수 있다.As a result, as shown in [FIG. 5], it can be seen that the sound absorption performance graphs of Examples are superior to those of Comparative Example 1 and Comparative Example 2, and in particular, at a frequency of 1,000 (Hz) or more, it is more excellent than Comparative Example 1 and Comparative Example 2. Able to know.
(압축탄성률 평가)(compressive modulus evaluation)
압축탄성률 평가는 상술한 비교예 1 및 비교예 2 그리고 실시예에 대해 이루어졌다. 이때의 시험 방법은 비교예 1 및 비교예 2 그리고 실시예를 각각 강판 위에 올려놓고 그 위에 분동(500g)을 올려놓은 다음, 아래의 시험 조건에서 정치한 뒤에 분동을 제거하고 1시간 뒤에 측정하였다. Evaluation of the compressive modulus was made for the above-described Comparative Example 1 and Comparative Example 2 and Examples. At this time, the test method was to place Comparative Example 1, Comparative Example 2, and Example on a steel plate, place a weight (500g) on it, remove the weight after leaving it still under the test conditions below, and measure 1 hour later.
시험 조건
Exam conditions
비교예 1
Comparative Example 1
비교예 2
Comparative Example 2
실시예
Example
상태조건
state condition
76%
76%
95%
95%
95%
95%
상온 조건
room temperature condition
50%
50%
85%
85%
82%
82%
1) 상태 조건은 25℃에서 1시간 방치
2) 상온 조건은 90℃에서 1시간 방치
1) The condition is left at 25℃ for 1 hour
2) Leave at room temperature for 1 hour at 90℃
그 결과, [표 2]와 같이, 실시예와 비교예 2는 상태 조건에서 95%의 두께복원을 나타내고 있으나, 비교예 1은 76% 정도로 압축탄성률이 좋지 않은 것을 알 수 있다. 또한, 상온 조건에서 실시예는 82%이고 비교예 2는 85%로 약간 우수하나, 비교예 1은 50% 정도로 압축탄성률이 현저하게 떨어진 것을 알 수 있다.As a result, as shown in [Table 2], Example and Comparative Example 2 show 95% of the thickness recovery under the condition, but Comparative Example 1 shows that the compressive modulus is not good at about 76%. In addition, at room temperature conditions, Example is 82% and Comparative Example 2 is slightly superior at 85%, but Comparative Example 1 can be seen that the compressive modulus is significantly reduced to about 50%.
10: 흡음 시트
20: 부직포10: sound-absorbing sheet
20: non-woven fabric
Claims (4)
상기 흡음 시트는,
굵기가 0.7De인 PET 극세사;
굵기가 4De인 다엽 중공사(Multi-lobal Fiber);
굵기가 3De인 콘주(Conjugate) 중공사; 및
굵기가 4De인 LM 파이버(Low-melting Polyester Fiber);로 이루어진 것을 특징으로 하는 자동차용 PET 극세사 흡음재.
In a PET microfiber sound absorbing material for automobiles in which a sound absorbing sheet is inserted between nonwoven fabrics,
The sound-absorbing sheet,
PET microfiber having a thickness of 0.7De;
Multi-lobal fiber having a thickness of 4De;
Conjugate hollow fiber having a thickness of 3De; and
LM fiber (Low-melting Polyester Fiber) having a thickness of 4De; PET microfiber sound absorbing material for automobiles, characterized in that consisting of.
상기 흡음 시트는,
면밀도가 580~620gsm인 것을 특징으로 하는 자동차용 PET 극세사 흡음재.
In paragraph 1,
The sound-absorbing sheet,
A PET microfiber sound absorbing material for automobiles, characterized in that the area density is 580 to 620 gsm.
상기 부직포는,
면밀도가 20~40gms인 스펀본드 부직포 또는 멜트 블로운 부직포인 것을 특징으로 하는 자동차용 PET 극세사 흡음재.
In paragraph 1,
The nonwoven fabric,
A PET microfiber sound absorbing material for automobiles, characterized in that it is a spunbond nonwoven fabric or a melt blown nonwoven fabric having an areal density of 20 to 40 gms.
상기 PET 극세사, 다엽 중공사, 콘주 중공사, 그리고 LM 파이버는,
각각 같은 중량비%로 혼합된 것을 특징으로 하는 자동차용 PET 극세사 흡음재.In any one of claims 1 to 3,
The PET microfiber, multi-leaf hollow fiber, conjugated hollow fiber, and LM fiber,
A PET microfiber sound absorbing material for automobiles, characterized in that each is mixed in the same weight ratio.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR101391915B1 (en) | 2013-11-06 | 2014-05-07 | (주)제이아이코리아 | Built-up-type acoustic absorbent manufacturing method by using polyurethan film and built-up-type acoustic absorbent |
| KR101797462B1 (en) | 2016-06-24 | 2017-11-16 | 덕양산업 주식회사 | Polyurethan foam composition for sound absorbing material of automobile and sound absorbing material using the same |
| KR102140941B1 (en) | 2019-04-30 | 2020-08-05 | (주)대한솔루션 | Method for forming polyurethane absorptive material of vehicle and the polyurethane absorptive material thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101391915B1 (en) | 2013-11-06 | 2014-05-07 | (주)제이아이코리아 | Built-up-type acoustic absorbent manufacturing method by using polyurethan film and built-up-type acoustic absorbent |
| KR101797462B1 (en) | 2016-06-24 | 2017-11-16 | 덕양산업 주식회사 | Polyurethan foam composition for sound absorbing material of automobile and sound absorbing material using the same |
| KR102140941B1 (en) | 2019-04-30 | 2020-08-05 | (주)대한솔루션 | Method for forming polyurethane absorptive material of vehicle and the polyurethane absorptive material thereof |
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