KR20130046078A - Headliner of having a height acoustic-absorptivity for vehicle - Google Patents

Headliner of having a height acoustic-absorptivity for vehicle Download PDF

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Publication number
KR20130046078A
KR20130046078A KR1020110110424A KR20110110424A KR20130046078A KR 20130046078 A KR20130046078 A KR 20130046078A KR 1020110110424 A KR1020110110424 A KR 1020110110424A KR 20110110424 A KR20110110424 A KR 20110110424A KR 20130046078 A KR20130046078 A KR 20130046078A
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KR
South Korea
Prior art keywords
vehicle
ceiling material
fibers
absorptive
felt
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KR1020110110424A
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Korean (ko)
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KR101324790B1 (en
Inventor
이수남
이원구
조병철
조윤진
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엔브이에이치코리아(주)
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Priority to KR1020110110424A priority Critical patent/KR101324790B1/en
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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
    • B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
    • B60R13/0212—Roof or head liners
    • 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
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
    • 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
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • 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
    • B32B2262/10—Inorganic fibres
    • B32B2262/108—Rockwool fibres
    • 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
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • 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
    • B32B2323/00—Polyalkenes
    • B32B2323/10—Polypropylene
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/003—Interior finishings
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2211/00—Specially adapted uses
    • D06N2211/12—Decorative or sun protection articles
    • D06N2211/26—Vehicles, transportation
    • D06N2211/261—Body finishing, e.g. headliners

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

PURPOSE: A high sound absorption efficiency ceiling material for a vehicle is provided to be lightweight using reinforced fiber and to obtain excellent thermal resistance, moisture resistance, and hydraulic stability. CONSTITUTION: A high sound absorption efficiency ceiling material for a vehicle comprises a base material layer(10), a film layer(20), and a material layer(30). The base material layer comprises of felt with a loop structure. The film layer is formed to the upper surface of the base material layer. The material layer is formed to the upper surface of the film layer.

Description

차량용 고흡음성 천정재 {HEADLINER OF HAVING A HEIGHT ACOUSTIC-ABSORPTIVITY FOR VEHICLE}High-absorptive ceiling material for vehicle {HEADLINER OF HAVING A HEIGHT ACOUSTIC-ABSORPTIVITY FOR VEHICLE}

본 발명은 차량용 고흡음성 천정재에 관한 것으로, 더욱 상세하게는 루프구조의 기재층으로 인해 탁월한 흡음성을 나타내며, 고강성의 보강섬유를 사용하여 중량이 가벼우면서도 우수한 내열성, 내습성 및 치수안정성을 나타내는 차량용 고흡음성 천정재에 관한 것이다.
The present invention relates to a high-absorptive ceiling material for a vehicle, and more particularly, exhibits excellent sound absorption due to the base layer of the roof structure, and exhibits excellent heat resistance, moisture resistance and dimensional stability while being light in weight by using a high rigidity reinforcing fiber. It relates to a high-absorptive ceiling material for a vehicle.

본 발명은 차량용 고흡음성 천정재에 관한 것으로, 더욱 상세하게는 루프구조의 기재층으로 인해 탁월한 흡음성을 나타내며, 고강성의 보강섬유를 사용하여 중량이 가벼우면서도 우수한 내열성, 내습성 및 치수안정성을 나타내는 차량용 고흡음성 천정재에 관한 것이다.The present invention relates to a high-absorptive ceiling material for a vehicle, and more particularly, exhibits excellent sound absorption due to the base layer of the roof structure, and exhibits excellent heat resistance, moisture resistance and dimensional stability while being light in weight by using a high rigidity reinforcing fiber. It relates to a high-absorptive ceiling material for a vehicle.

차량에 사용되는 천정재는 통상적으로 펠트형태 및 보드형태로 성형되어 사용되며, 차량의 천정부에 부착되어 외부로부터 차량의 실내로 유입되는 소음을 차단하고, 차량의 단열성을 향상시키는 역할을 한다.The ceiling material used in the vehicle is usually molded and used in the form of a felt and board, attached to the ceiling of the vehicle to block the noise flowing into the interior of the vehicle from the outside, and serves to improve the thermal insulation of the vehicle.

종래에 펠트형태로 성형되어 사용되던 차량용 천정재는 합성수지나 천연섬유 등이 일반적으로 사용되었는데, 합성수지를 이용한 펠트 형태의 천정재는 합성수지 및 천정재료를 접착하는 접착제 성분에 페놀성분이 첨가된 재료가 많아 성형작업 공정에서 악취가 발생하여 작업환경을 오염시키고, 인체에 유해한 휘발성 유기화합물(VOCs)이 발생하는 문제점이 있었다.Conventionally, a vehicle ceiling material that has been used in the form of a felt is generally made of synthetic resin or natural fiber, and the felt-type ceiling material using synthetic resin is formed by adding a large amount of phenolic component to the adhesive component for bonding the synthetic resin and the ceiling material. Odor is generated in the working process to pollute the working environment, there was a problem that generates volatile organic compounds (VOCs) harmful to the human body.

전술한 문제점을 해결하기 위해 천연섬유를 이용한 펠트형 천정재가 사용되고 있으나, 천연섬유를 이용한 펠트형 천정재의 경우는 내열성과 내습성이 취약하여 차량용 천정재에 적합한 물성을 얻기 위해서는 고중량의 펠트를 사용해야 하기 때문에, 천정재의 무게가 증가하고, 천연섬유의 탄화로 인한 악취가 발생하는 문제점이 있었다.In order to solve the above problems, a felt-type ceiling material using natural fibers is used, but a felt-type ceiling material using natural fibers has poor heat resistance and moisture resistance, so that a heavy weight felt must be used to obtain suitable properties for a vehicle ceiling material. Therefore, the weight of the ceiling material is increased, there is a problem that odor due to the carbonization of the natural fiber occurs.

또한, 보드형태로 성형되어 사용되던 차량용 천정재는 폴리우레탄 폼이 주재료로 사용되었는데, 폴리우레탄 폼을 이용한 차량용 천정재의 경우 내후성이 취약하여 장시간 사용하게 되면 변색되거나, 폼 셀이 파손되어 차량용 천정재의 전체적인 내구성이 저하되는 문제점이 있었다.
In addition, as a ceiling material for vehicles used in the form of a board, polyurethane foam was used as a main material. In the case of a vehicle ceiling material using polyurethane foam, since it is poor in weatherability, it becomes discolored when it is used for a long time, or the foam cell is damaged so that the overall ceiling material of the vehicle is damaged. There was a problem that the durability is lowered.

본 발명의 목적은 루프구조의 펠트로 기재층을 형성하여 흡음성이 우수한 차량용 고흡음성 천정재를 제공하는 것이다.An object of the present invention is to provide a high-absorptive ceiling material for a vehicle having excellent sound absorption by forming a base layer with a felt having a loop structure.

본 발명의 다른 목적은 고강성을 나타내는 보강섬유를 사용하여 중량이 가벼우면서도 우수한 내열성, 내습성 및 치수안정성을 나타내는 차량용 고흡음성 천정재를 제공하는 것이다.
It is another object of the present invention to provide a high-absorptive ceiling material for a vehicle that exhibits excellent heat resistance, moisture resistance and dimensional stability while being light in weight by using a reinforcing fiber exhibiting high rigidity.

본 발명의 목적은 루프구조를 갖는 펠트로 이루어진 기재층, 상기 기재층의 상부면에 형성되는 필름층 및 상기 필름층의 상부면에 형성되는 원단층으로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재를 제공함에 의해 달성된다.An object of the present invention to provide a high-absorptive ceiling material for a vehicle, characterized in that consisting of a base layer made of a felt having a loop structure, a film layer formed on the upper surface of the base layer and a fabric layer formed on the upper surface of the film layer. Is achieved by.

본 발명의 바람직한 특징에 따르면, 상기 기재층은 니들펀칭된 펠트를 루프펀칭하여 제조되는 것으로 한다.According to a preferred feature of the invention, the base layer is to be produced by loop punching the needle punched felt.

본 발명의 더 바람직한 특징에 따르면, 상기 기재층은 보강섬유 40 내지 60 중량부 및 바인더 섬유 40 내지 60 중량부로 이루어지는 것으로 한다.According to a more preferred feature of the invention, the base layer is to be made of 40 to 60 parts by weight of reinforcing fibers and 40 to 60 parts by weight of binder fibers.

본 발명의 더욱 바람직한 특징에 따르면, 상기 보강섬유는 유리섬유, 현무암섬유, 아라미드섬유 및 탄소섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a more preferred feature of the invention, the reinforcing fibers are made of one or more selected from the group consisting of glass fibers, basalt fibers, aramid fibers and carbon fibers.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 보강섬유는 직경이 5 내지 30 마이크로미터이고, 길이가 50 내지 80 밀리미터인 것으로 한다.According to an even more preferred feature of the present invention, the reinforcing fibers are 5 to 30 micrometers in diameter, 50 to 80 millimeters in length.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 바인더섬유는 폴리프로필렌 및 용융온도가 160℃ 이상인 저융점 폴리에스터로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the binder fiber is made of one or more selected from the group consisting of polypropylene and low melting point polyester having a melting temperature of 160 ° C or higher.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 필름층은 통기성 핫멜트필름으로 이루어지는 것으로 한다.According to a further preferred feature of the present invention, the film layer is made of a breathable hot melt film.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 통기성 핫멜트 필름은 30 내지 50 마이크로미터 두께의 폴리에틸렌 수지에 직경이 0.1 내지 2 밀리미터인 기공이 1 내지 40 밀리미터의 간격으로 형성되는 것으로 한다.According to a further preferred feature of the present invention, the breathable hot melt film is formed in a polyethylene resin of 30 to 50 micrometers thick with a pore having a diameter of 0.1 to 2 millimeters at intervals of 1 to 40 millimeters.

본 발명의 더욱 더 바람직한 특징에 따르면, 상기 원단층은 부직포, 니트 및 스웨이드로 이루어진 그룹으로부터 선택된 하나의 형태로 이루어지는 것으로 한다.
According to a further preferred feature of the invention, the fabric layer is to be made of one form selected from the group consisting of nonwoven fabric, knit and suede.

본 발명에 따른 차량용 고흡음성 천정재는 루프구조의 펠트로 기재층을 형성하여 탁월한 흡음성을 나타낸다.The high-absorptive ceiling material for a vehicle according to the present invention forms a base layer with a felt having a loop structure to exhibit excellent sound absorption.

또한, 고강성을 나타내는 보강섬유를 사용하여 중량이 가벼우면서도 탁월한 내열성, 내습성 및 치수안정성을 나타낸다.
In addition, by using a reinforcing fiber exhibiting high rigidity, it exhibits excellent heat resistance, moisture resistance and dimensional stability while being light in weight.

도 1은 본 발명에 따른 차량용 고흡음성 천정재를 나타낸 분해사시도이다.
도 2는 본 발명의 비교예 1에 의해 제조된 차량용 천정재의 기재층을 나타낸 사진이다.
도 3은 본 발명에 따른 차량용 고흡음성 천정재에 사용되는 통기성 필름을 현미경으로 촬영하여 나타낸 사진이다.
도 4는 본 발명에 따른 차량용 고흡음성 천정재에 사용되는 통기성 필름에 형성된 기공을 현미경으로 촬영하여 나타낸 사진이다.
도 5는 본 발명의 실시예 1 및 비교예 1 내지 2에 의해 제조된 차량용 고흡음성 천정재 및 차량용 천정재의 흡음률을 측정하여 나타낸 그래프이다.
도 6은 본 발명의 실시예 1에 의해 제조된 차량용 고흡음성 천정재의 내열사이클 시험 전,후의 모습을 나타낸 사진이다.1 is an exploded perspective view showing a high-absorptive ceiling material for a vehicle according to the present invention.
2 is a photograph showing a base layer of a vehicle ceiling material manufactured by Comparative Example 1 of the present invention.
Figure 3 is a photograph of a breathable film used in a high-absorptive ceiling material for a vehicle according to the present invention taken under a microscope.
Figure 4 is a photograph showing by photographing the pores formed in the breathable film used in the vehicle-acoustic absorbent ceiling material according to the present invention under a microscope.
5 is a graph showing the sound absorption rate of the high-absorptive ceiling material for a vehicle and the ceiling material for a vehicle manufactured by Example 1 and Comparative Examples 1 to 2 of the present invention.
Figure 6 is a photograph showing the state before and after the heat cycle test of the high-absorptive ceiling material for a vehicle manufactured by Example 1 of the present invention.

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.
Hereinafter, preferred embodiments of the present invention and physical properties of the respective components will be described in detail with reference to the accompanying drawings. However, the present invention is not limited thereto, And this does not mean that the technical idea and scope of the present invention are limited.

본 발명에 따른 차량용 고흡음성 천정재는 루프구조를 갖는 펠트로 이루어진 기재층(10), 전술한 기재층(10)의 상부면에 형성되는 필름층(20) 및 전술한 필름층(20)의 상부면에 형성되는 원단층(30)으로 이루어진다.
The high-absorptive ceiling material for a vehicle according to the present invention includes a base layer 10 made of felt having a loop structure, a film layer 20 formed on an upper surface of the above-described base layer 10, and an upper surface of the above-described film layer 20. It is made of a fabric layer 30 formed in.

전술한 기재층(10)은 루프구조를 갖는 펠트로 이루어지며, 보감섬유 40 내지 60 중량부 및 바인더 섬유 40 내지 60 중량부를 니들펀칭하여 이루어진 펠트를 루프펀칭하여 루프구조를 갖는 형태로 제조된다.The substrate layer 10 described above is made of a felt having a loop structure, and is manufactured in a form having a loop structure by loop punching a felt made by needle punching 40 to 60 parts by weight of the supplementary fiber and 40 to 60 parts by weight of the binder fiber.

전술한 형태로 이루어진 기재층은 2D 구조의 펠트를 루프펀칭하여, 3D 구조의 루프구조를 갖는 펠트로 제조하여 이루어지는데, 더욱 상세하게는 보강섬유와 바인더섬유를 혼섬한 후에, 카딩공정 및 니들펀칭 공정을 통해 2D 구조의 펠트 2매를 제조하고, 제조된 2D 구조의 펠트 2매를 각각 루프펀칭 가공하여 루프가 형성된 3D 구조의 펠트 2매를 제조하고, 3D 구조의 펠트 2매를 루프가 형성된 면이 서로 맞닿을 수 있도록 형성하여 제조된다.The base layer having the above-described form is made by loop punching the felt of the 2D structure and manufacturing the felt having the loop structure of the 3D structure. More specifically, after mixing the reinforcing fibers and the binder fibers, the carding process and the needle punching process 2 felt felt sheets of 2D structure through, and 2 felt felt sheets of 2D structure by loop punching to produce 2 felt felt of 3D structure with loops, and 2 felt felt sheets of 3D structure with loop It is manufactured by forming so that it may abut each other.

이러한 루프구조를 갖는 펠트로 이루어진 기재층(10)은 루프구조를 갖는 펠트의 벌키성으로 인해 차량용 고흡음성 천정재의 흡음성을 증대시킨다.The base layer 10 made of a felt having such a roof structure increases the sound absorbing property of the high-absorptive ceiling material for a vehicle due to the bulkiness of the felt having the loop structure.

이때, 전술한 보강섬유는 직경이 5 내지 30 마이크로미터고, 길이가 50 내지 80 밀리미터인 유리섬유, 현무암섬유, 아라미드섬유 및 탄소섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는데, 전술한 보감섬유는 고강성을 나타내며, 고강성을 나타내는 보강섬유가 혼섬된 기재층(10)이 적용된 차량용 고흡음성 천정재는 중량이 가벼우면서도 내열성, 내습성 및 치수안정성이 향상된다.At this time, the above-mentioned reinforcing fibers are 5 to 30 micrometers in diameter, 50 to 80 millimeters in length at least one selected from the group consisting of glass fibers, basalt fibers, aramid fibers and carbon fibers, the above-described reinforcing fibers The high-absorptive ceiling material for vehicles to which the base layer 10 mixed with the reinforcing fibers exhibiting high stiffness and high stiffness is applied is light in weight, and heat resistance, moisture resistance, and dimensional stability are improved.

전술한 바인더섬유는 폴리프로필렌섬유 및 용융온도가 160℃ 이상인 저융점폴리에스터섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는데, 융융된 상태에서 보강섬유 사이에 스며든 후에 냉각과정을 거치게 되면, 보강섬유 사이에서 경화되어 보강섬유를 결속하는 바인더의 역할을 하며, 기재층(10)의 성형성을 향상시킨다.The binder fiber described above comprises at least one selected from the group consisting of polypropylene fibers and low melting point polyester fibers having a melting temperature of 160 ° C. or higher. Cured in between serves as a binder to bind the reinforcing fibers, and improves the moldability of the base layer (10).

이때, 전술한 바인더섬유의 섬도는 3 내지 15 데니아이고, 길이는 50 내지 80 밀리미터이며, 권축(Crimp)이 부여된 것을 사용하는 것이 바람직하다.
At this time, the fineness of the above-mentioned binder fiber is 3 to 15 denier, the length is 50 to 80 millimeters, it is preferable to use the one given the crimp (Crimp).

전술한 필름층(20)은 전술한 기재층(10)의 상부면에 형성되며, 통기성 핫멜트 필름으로 이루어지는데, 전술한 기재층(10)과 전술한 원단층(30)을 접착하는 역할을 한다.The above-described film layer 20 is formed on the upper surface of the above-described base layer 10, and made of a breathable hot melt film, and serves to bond the above-described base layer 10 and the above-described fabric layer 30. .

또한, 전술한 통기성 핫멜트 필름은 30 내지 50 마이크로미터 두께의 폴리에틸렌 수지에 직경이 0.1 내지 2 밀리미터인 기공이 1 내지 40 밀리미터의 간격으로 형성되는데, 전술한 기공이 형성된 통기성 핫멜트 필름의 통기성은 104cc/cm2/sec이며, 이러한 통기성을 갖는 기공의 형성으로 인해 전술한 원단층(30)을 통과한 소음이 전술한 필름층(20)에 형성된 기공을 거쳐 전술한 기재층(10)에 전달되기 때문에, 흡음성이 우수한 차량용 고흡음성 천정재가 제공된다.
In addition, the above-mentioned breathable hot melt film is formed in a polyethylene resin of 30 to 50 micrometers thick in the interval of 1 to 40 millimeters of pores having a diameter of 0.1 to 2 millimeters, the breathability of the breathable hot melt film having the above-mentioned pores is 10 4 cc / cm 2 / sec, and the noise passing through the above-described fabric layer 30 due to the formation of pores having such air permeability is transmitted to the above-described base layer 10 through the pores formed in the above-described film layer 20. Therefore, the high-absorptive ceiling material for a vehicle excellent in sound absorption is provided.

전술한 원단층(30)은 전술한 필름층(20)의 상부면에 형성되며, 부직포, 니트 및 스웨이드로 이루어진 그룹으로부터 선택된 하나의 형태로 이루어지는데, 본 발명에 따른 차량용 고흡음성 천정재를 차량의 천정에 적용할 경우, 차량의 실내측으로 노출되어 차량 실내의 외관 품질을 개선하며, 차량용 고흡음성 천정재의 흡음효과를 향상시키는 역할을 한다.The above-described fabric layer 30 is formed on the upper surface of the above-described film layer 20, and is made of one form selected from the group consisting of nonwoven fabric, knit, and suede, and the vehicle has a high sound-absorbing ceiling material according to the present invention. When applied to the ceiling, the interior of the vehicle is exposed to improve the appearance quality of the interior of the vehicle, and serves to improve the sound absorption effect of the high-absorptive ceiling material for the vehicle.

이때, 전술한 원단층(30)이 부직포나 니트 형태로 제조될 경우에는 폴리에틸렌 테레프탈레이트를 사용하는 것이 바람직하며, 전술한 원단층(30)이 스웨이드로 형태로 제조될 경우에는 폴리우레탄에 함침된 폴리에틸렌테레프탈레이트를 사용하는 것이 바람직하다.
In this case, when the above-described fabric layer 30 is manufactured in a nonwoven fabric or knit form, it is preferable to use polyethylene terephthalate, and when the above-described fabric layer 30 is manufactured in suede form, it is impregnated with polyurethane. Preference is given to using polyethylene terephthalate.

이하에서는, 본 발명에 따른 차량용 고흡음성 천정재의 제조방법 및 그 제조방법으로 제조된 차량용 고흡음성 천정재의 물성을 실시예를 들어 설명하기로 한다.
Hereinafter, the physical properties of the method for manufacturing a high-absorptive ceiling material for a vehicle according to the present invention, and the high-absorptive ceiling material for a vehicle manufactured by the method will be described.

<실시예 1>&Lt; Example 1 >

직경이 10㎛이고 길이가 75mm인 유리섬유 25 중량부, 직경이 14㎛이고 길이가 51mm인 11ea/inch의 권축이 부여된 아라미드섬유 20 중량부 및 섬도가 6de이고 길이가 64mm인 8ea/inch의 권축이 부여된 폴리프로필렌섬유 55 중량부를 혼섬하고 카딩공정 및 니들펀칭 공정을 통해 면밀도가 550g/m2인 2D 구조의 펠트 2매를 제조한 후에, 제조된 2D 구조의 펠트 2매를 각각 루프펀칭 가공으로 루프를 형성시켜 면밀도가 500g/m2인 3D 구조의 펠트 2매를 제조하고, 3D 구조의 펠트 2매를 루프가 형성된 면이 서로 맞닿을 수 있도록 형성하여 기재층(10)을 제조하고, 표면온도가 210℃인 열간프레스를 이용하여 60kgf/cm2의 압력으로 60초 동안 예열 압착하여 성형금형으로 이송한 후 통기성 핫멜트 필름으로 이루어진 필름층과 부직포로 이루어진 원단층을 순차적으로 적층시킨 후에 80kgf/cm2의 압력으로 45초 동안 냉각압착하여 차량용 고흡음성 천정재를 제조하였다.
25 parts by weight of glass fiber having a diameter of 10 μm and a length of 75 mm, 20 parts by weight of aramid fiber imparted with 11 ea / inch crimp of 11 μm in diameter and length of 51 mm, and 8ea / inch of fineness 6de and 64 mm in length. After mixing 55 parts by weight of the crimped polypropylene fiber and producing two sheets of 2D felt having a surface density of 550 g / m 2 through a carding process and a needle punching process, the two sheets of felt having a 2D structure were loop-punched. By forming a loop by processing to produce two sheets of 3D structure felt having a surface density of 500g / m 2 , and the two layers of felt 3D structure is formed so that the surface on which the loop is formed to be in contact with each other to prepare a base layer 10 After hot pressing at 60kgf / cm 2 for 60 seconds using a hot press having a surface temperature of 210 ° C., transferred to a mold, and then sequentially laminating a film layer made of a breathable hot melt film and a fabric layer made of nonwoven fabric. 80k Cooling compression for 45 seconds at a pressure of gf / cm 2 to prepare a high-absorptive ceiling material for a vehicle.

<비교예 1>&Lt; Comparative Example 1 &

실시예 1과 동일하게 진행하되, 면밀도가 550g/m2인 2D 구조의 펠트 2매를 적층하여 기재층을 제조하였으며, 비통기성 핫멜트 필름으로 이루어진 필름층과 부직포 원단으로 구성된 원단층을 기재층의 상부면에 순차적으로 적층시켜 차량용 천정재를 제조하였다.
Proceed in the same manner as in Example 1, a base layer was prepared by laminating two felts of 2D structure having a surface density of 550 g / m 2 , and a fabric layer composed of a non-breathable hot melt film and a nonwoven fabric fabric layer of the base layer. Laminated sequentially on the upper surface to prepare a vehicle ceiling material.

<비교예 2>Comparative Example 2

실시예 1과 동일하게 진행하되, 비통기성 핫멜트 필름으로 이루어진 필름층과 부직포원단으로 이루어진 원단층을 기재층 상부면에 순차적으로 적층시켜 차량용 천정재를 제조하였다.
Proceeded in the same manner as in Example 1, a vehicle layer was manufactured by sequentially laminating a film layer made of a non-breathable hot melt film and a fabric layer made of a nonwoven fabric fabric on the upper surface of the base layer.

전술한 실시예 1 및 비교예 1 내지 2를 통해 제조된 차량용 고흡음성 천정재 및 차량용 천정재의 흡음률을 측정하여 아래 표 1에 나타내었다.The sound absorption rate of the high-absorptive ceiling material for a vehicle and the ceiling material for a vehicle manufactured by the above-described Example 1 and Comparative Examples 1 to 2 are measured and shown in Table 1 below.

(단, 흡음률은 흡음률 평가방법인 ISO R 354, Alpha Cabin법으로 측정하였다.)
(However, the sound absorption rate was measured by the ISO R 354, Alpha Cabin method, the sound absorption rate evaluation method.)

<표 1>TABLE 1

Figure pat00001
Figure pat00001

위에 표 1에 나타낸 것처럼 차량용 본 발명에 따른 실시예 1에 의해 제조된 차량용 고흡음성 천정제는 비교예 1 내지 2를 통해 제조된 차량용 흡음재에 비해 거의 모든 주파수 대역에서 월등한 흡음률을 나타내는 것을 알 수 있다.
As shown in Table 1 above, the vehicular superabsorbent ceiling prepared by Example 1 according to the present invention for vehicles exhibits superior sound absorption in almost all frequency bands compared to the vehicle sound absorbing materials prepared through Comparative Examples 1 to 2. have.

또한, 전술한 실시예 1을 통해 제조된 차량용 고흡읍성 천정재의 내열, 내한 및 내습조건에서의 치수변화율을 측정하여 아래 표 2에 나타내었다.In addition, the dimensional change rate in the heat resistance, cold resistance and moisture resistance conditions of the high-absorptive ceiling material for vehicles manufactured through the above-described Example 1 is measured and shown in Table 2 below.

(단, 치수변화율은 (주)고려큐엠에스의 Constant Temp & Humid Chamber를 이용하여 1시간 동안 23℃에서 90℃까지 가열하고, 90℃에서 3시간 동안 온도를 유지하고, 1시간 동안 90℃에서 23℃로 냉각하고, 23℃에서 1시간 동안 온도를 유지하고, 1시간 동안 23℃에서 영하 40℃로 냉각하고, 3시간 동안 영하 40℃를 유지하고, 1시간 동안 영하 40℃에서 23℃로 가열하고, 1시간 동안 23℃를 유지하고, 1시간 동안 23℃에서 50℃로 가열하면서 상대습도를 90%RH까지 상승시키고, 7시간 동안 50℃와 90%RH를 유지하고, 1시간 동안 50℃에서 23℃로 냉각 및 90%의 RH를 50%로 하강하는 과정을 1회로 하여, 총 3회 반복한 후에 테스트 제품의 변형 유무를 측정하였다.) (However, the rate of dimensional change is heated to 23 ℃ to 90 ℃ for 1 hour using Constant Temp & Humid Chamber of Korea QMS Co., Ltd., maintained at 90 ℃ for 3 hours, at 90 ℃ for 1 hour Cooled to 23 ° C., maintained at 23 ° C. for 1 hour, cooled to 23 ° C. at −40 ° C., maintained at −40 ° C. for 3 hours, and at −40 ° C. to 23 ° C. for 1 hour. Heat, maintain 23 ° C. for 1 hour, raise relative humidity to 90% RH with heating from 23 ° C. to 50 ° C. for 1 hour, maintain 50 ° C. and 90% RH for 7 hours, 50 for 1 hour Cooling from 23 ° C. to 23 ° C. and lowering 90% of the RH to 50% in one cycle, after a total of three repetitions, measured the presence or absence of deformation of the test product.)

<표 2><Table 2>

Figure pat00002
Figure pat00002

위에 표 2에 나타낸 것처럼 본 발명에 따른 실시예 1을 통해 제조된 차량용 고흡음성 천정재는 고강성을 나타내는 보강섬유가 사용되어 중량이 가벼우면서도 내열과 내습에 대한 우수한 치수안정성을 나타낸다.
As shown in Table 2 above, the high-absorptive ceiling material for a vehicle manufactured according to Example 1 according to the present invention is used as a reinforcing fiber exhibiting high rigidity and exhibits excellent dimensional stability against heat and moisture while being light in weight.

10 ; 기재층
20 ; 필름층
30 ; 원단층10; Substrate layer
20; Film layer
30; Fabric layer

Claims (9)

루프구조를 갖는 펠트로 이루어진 기재층;
상기 기재층의 상부면에 형성되는 필름층; 및
상기 필름층의 상부면에 형성되는 원단층;으로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.
A base layer made of felt having a loop structure;
A film layer formed on an upper surface of the base layer; And
High-absorptive ceiling material for a vehicle, characterized in that consisting of; the fabric layer formed on the upper surface of the film layer.
청구항 1에 있어서,
상기 기재층은 니들펀칭된 펠트를 루프펀칭하여 제조되는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 1,
The base layer is a high-absorptive ceiling material for a vehicle, characterized in that manufactured by loop punching the needle punched felt.
청구항 1에 있어서,
상기 기재층은 보강섬유 40 내지 60 중량부 및 바인더 섬유 40 내지 60 중량부로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 1,
The base layer is a vehicle sound absorbing ceiling material, characterized in that consisting of 40 to 60 parts by weight of reinforcing fibers and 40 to 60 parts by weight of binder fibers.
청구항 3에 있어서,
상기 보강섬유는 유리섬유, 현무암섬유, 아라미드섬유 및 탄소섬유로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 3,
The reinforcing fiber is a high-absorptive ceiling material for a vehicle, characterized in that made of at least one selected from the group consisting of glass fibers, basalt fibers, aramid fibers and carbon fibers.
청구항 3에 있어서,
상기 보강섬유는 직경이 5 내지 30 마이크로미터이고, 길이가 50 내지 80 밀리미터인 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 3,
The reinforcing fibers are 5 to 30 micrometers in diameter, 50 to 80 millimeters in length, high-absorptive ceiling material for a vehicle, characterized in that.
청구항 3에 있어서,
상기 바인더섬유는 폴리프로필렌 및 용융온도가 160℃ 이상인 저융점 폴리에스터로 이루어진 그룹으로부터 선택된 하나 이상으로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 3,
The binder fiber is a high-absorptive ceiling material for a vehicle, characterized in that at least one selected from the group consisting of polypropylene and low melting point polyester having a melting temperature of 160 ° C or higher.
청구항 1에 있어서,
상기 필름층은 통기성 핫멜트필름으로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method according to claim 1,
The film layer is a high-absorptive ceiling material for a vehicle, characterized in that made of a breathable hot melt film.
청구항 7에 있어서,
상기 통기성 핫멜트 필름은 30 내지 50 마이크로미터 두께의 폴리에틸렌 수지에 직경이 0.1 내지 2 밀리미터인 기공이 1 내지 40 밀리미터의 간격으로 형성되는 것을 특징으로 하는 차량용 고흡음성 천정재.
The method of claim 7,
The breathable hot melt film is a high-absorptive ceiling material for a vehicle, characterized in that the pores having a diameter of 0.1 to 2 millimeters at intervals of 1 to 40 millimeters in a polyethylene resin of 30 to 50 micrometers thick.
청구항 1에 있어서,
상기 원단층은 부직포, 니트 및 스웨이드로 이루어진 그룹으로부터 선택된 하나의 형태로 이루어지는 것을 특징으로 하는 차량용 고흡음성 천정재.The method according to claim 1,
The fabric layer is a high-absorptive ceiling material for a vehicle, characterized in that formed in one form selected from the group consisting of nonwoven fabric, knit and suede.
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