KR20110009409A - Interior material for automobile - Google Patents

Interior material for automobile Download PDF

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Publication number
KR20110009409A
KR20110009409A KR1020090066794A KR20090066794A KR20110009409A KR 20110009409 A KR20110009409 A KR 20110009409A KR 1020090066794 A KR1020090066794 A KR 1020090066794A KR 20090066794 A KR20090066794 A KR 20090066794A KR 20110009409 A KR20110009409 A KR 20110009409A
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South Korea
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polylactic acid
vehicle interior
weight
fiber
eco
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KR1020090066794A
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Korean (ko)
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KR101092382B1 (en
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박성호
임동철
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한일이화주식회사
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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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/10—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer reinforced with filaments
    • 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
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B32B2262/065—Lignocellulosic fibres, e.g. jute, sisal, hemp, flax, bamboo
    • 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
    • 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
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/02—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising animal or vegetable substances, e.g. cork, bamboo, starch
    • 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
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE: A laminate structure for eco-friendly car interior materials and car interior materials are provided to minimize emission of harmful materials even with an existing burying or burning method. CONSTITUTION: A polylactic acid sheet(20) and a reinforcing layer(30) are laminated in a laminate structure for eco-friendly car interior materials. 90weight%:10weight% to 10weight%:90weight% of a natural fiber and a thermoplastic fiber are mixed to laminate the reinforcing layer on one side and both sides of the polylactic acid sheet. The thickness of the polylactic acid sheet is from 1mm to 8mm. The thickness of the reinforcing layer is 0.5mm~3.0mm and the weight of the reinforcing layer is 200g/m^2~800g/m^2.

Description

친환경적인 차량 내장재용 적층 구조물 및 차량 내장재{INTERIOR MATERIAL FOR AUTOMOBILE}Eco-Friendly Laminated Structures and Interior Materials for Vehicle Interiors {INTERIOR MATERIAL FOR AUTOMOBILE}

본 발명은 차량 내장재용 적층 구조물에 관한 것으로서, 더욱 상세하게는 생분해성 소재를 다량 포함하여 친환경적이며 양면에 적층된 보강층에 의해 내열성과 성형성을 향상시킨 것을 특징으로 하는 적층 구조물 및 차량 내장재에 관한 것이다. The present invention relates to a laminated structure for a vehicle interior material, and more particularly, to a laminate structure and a vehicle interior material, characterized in that the heat resistance and formability is improved by an environment-friendly and reinforced layer laminated on both sides including a large amount of biodegradable material. will be.

차량 내장재용 재료로 사용되는 것으로는 레진펠트(Resin Felt), 천연섬유 강화 보드(Board), 페이퍼보드(Paper Board), 경질폴리우레탄 등이 있다.　종래의 재료들은 석유계 합성 플라스틱을 다량 사용하므로 종래 재료로 제조된 부품을 매립하여 폐기 시 분해가 잘 되지 않거나 오랜 기간이 소요되며, 또 소각하여 폐기 시 유해 물질이 발생하여 대기 중으로 방출되는 등의 문제점이 있어서 종래의 일반적인 폐기물 처리 방법으로는 환경오염 문제를 완전히 해결할 수 없다는 단점이 있다. Materials used for vehicle interior materials include resin felt, natural fiber reinforced board, paper board, and rigid polyurethane. Conventional materials use a large amount of petroleum-based synthetic plastics, so that parts made of conventional materials are buried and dismantled are difficult to disassemble or take a long time. There is a problem that the conventional waste treatment method does not completely solve the environmental pollution problem.

근래에 폴리유산(Polylactic acid)이 L-유산의 발효법 개발로 인해 대량으로 값싸게 제조되고 있으며, 퇴비화 조건에서 분해 속도가 빠르므로 친환경 소재로서 그 이용 분야의 범위가 확대되고 있다. 이와 같이 친환경적이고 실용화가 가능한 폴리유산(Polylactic acid)이 쉬트(Sheet)로 성형된 후 각종 제품으로 이용되고 있으나, 아직까지 차량 내장재용으로 이용되기에는 내열성과 충격성 등의 기능성을 갖추고 있지 못하다. Recently, polylactic acid (Polylactic acid) has been produced in large quantities inexpensively due to the development of the fermentation method of L-lactic acid, and since the decomposition rate is fast under composting conditions, the scope of its use as an environmentally friendly material is expanding. As such, polylactic acid, which is eco-friendly and practical, is molded into sheets and used in various products, but it does not yet have functionality such as heat resistance and impact resistance to be used for vehicle interior materials.

상기 폴리유산(Polylactic acid)의 내열성을 보완하기 위한 종래의 기술로는 한국공개특허공보 제2008-0067424호의 다층구조를 가진 생분해성 시트로 내열성 등의 기능성을 부여하기 위해 폴리유산(Polylactic acid)으로 형성된 내층(A)과, 지방족 폴리에스테르(Polyester), 방향족 폴리에스테르(Polyester) 또는 방향족-지방족 폴리에스테르(Polyester)에서 선택된 하나 이상의 폴리에스테르(Polyester)와 폴리유산(Polylactic acid)의 혼합물로 형성된 외층(B)이 B/A/B구조의 3층으로 형성된 것을 특징으로 하나, 두께가 0.15mm 내지 1.20mm로 얇고 내열성과 성형성이 부족하여 차량 내장재 구조물로는 사용하기 어렵다.Conventional techniques for supplementing the heat resistance of the polylactic acid (Polylactic acid) is a biodegradable sheet having a multi-layered structure of Korea Patent Publication No. 2008-0067424 as a polylactic acid (Polylactic acid) to give functionality such as heat resistance The inner layer (A) formed and the outer layer formed of a mixture of one or more polyesters and polylactic acid selected from aliphatic polyesters, aromatic polyesters or aromatic-aliphatic polyesters (B) is characterized in that formed of three layers of B / A / B structure, but the thickness is 0.15mm to 1.20mm thin and lacks heat resistance and formability is difficult to use as a vehicle interior structure.

또한, 한국공개특허 제2004-0066148호 또는 제2009-0014382호에 따르면 생분해성 수지 가교 연속 발포 시트에 관해서 규정하고 있으나, 발포 시트 단독으로는 성형 공정성이 떨어지며 강도나 내열성이 부족하고 폼의 압축 영구 변형으로 인해 내구성도 떨어지므로 차량 내장재용으로 부적합하다.In addition, according to Korean Patent Laid-Open Publication No. 2004-0066148 or 2009-0014382, the biodegradable resin crosslinked continuous foam sheet is prescribed, but the foam sheet alone has poor molding processability, lacks strength and heat resistance, and permanently compresses the foam. It is also not suitable for vehicle interiors because it is less durable due to deformation.

또한, 한국등록특허 제0836496호에 따르면 폴리유산 수지에 천연섬유를 함유하는 사출발포형 생분해성 경질 발포체를 제시하였으나, 이는 폴리유산 수지 내에 천연섬유가 함침된 형태로써 사출이나 압출 공법을 위한 원재료 형태이며, 사출 또는 압출 공법을 통한 고온 작업 시 천연섬유의 분해가 일어날 수 있으며, 헤드라이너(Headliner)와 리어셀프(Rear shelf)와 같은 대형 구조물의 성형에는 적합하지 않다.In addition, according to Korean Patent Registration No. 0836496, an injection-foaming biodegradable rigid foam containing natural fibers in a polylactic acid resin is proposed, but this is a form in which a natural fiber is impregnated in a polylactic acid resin and a raw material form for an injection or extrusion process. In the high temperature operation through the injection or extrusion method, decomposition of natural fibers may occur, and is not suitable for molding large structures such as headliners and rear shelves.

또한, 자동차 내장용 천정재 기재(한국공개특허 제2009-0008580호)에 폴리올레핀계 발포 시트(Polyolefin foaming sheet)로 구성된 심재와 그 상부 및 하부에 천연섬유(Natural fiber) 및 합성섬유(Synthetic fiber)로 구성된 보강재층을 갖는 방법으로 경량, 고강성 구조물을 제시하였으나, 심재로 사용된 폴리올레핀계 발포 시트(Polyolefin foaming sheet)는 폐기시 일반적인 방법으로는 환경오염 문제를 완전히 해결할 수 없다. In addition, a core material composed of a polyolefin foaming sheet on a vehicle interior ceiling material substrate (Korean Patent Publication No. 2009-0008580) and a natural fiber and a synthetic fiber on top and bottom thereof Although a lightweight, high rigid structure is proposed as a method having a reinforcement layer composed of a polyolefin foaming sheet used as a core material, a general method of disposal does not completely solve the environmental pollution problem.

본 발명은 이와 같은 문제를 해소하기 위해 마련한 것으로, 본 발명은 합성 플라스틱의 폐기에 따른 환경 문제를 해결하기 위해 생분해성을 부여하면서도, 차량 내장재 구조물에 적합한 내열성과 강성을 갖고 우수한 성형성을 제공하는 친환경적인 차량 내장재용 적층 구조물을 제공하는데 그 목적이 있다. The present invention has been made to solve such a problem, the present invention provides biodegradability to solve the environmental problems caused by the disposal of the synthetic plastic, while providing excellent moldability and heat resistance and rigidity suitable for the vehicle interior structure It is an object of the present invention to provide a laminated structure for environmentally friendly vehicle interior materials.

구체적으로, 본 발명은 폴리유산계 쉬트를 심재로 적용하며, 양면에 천연섬유와 열가소성 섬유로 만든 부직포를 열압착해서 제조한 보강층을 적층하여 친환경성을 향상시킨 차량 내장재용 적층 구조물에 관한 것이다. Specifically, the present invention relates to a laminated structure for a vehicle interior material by applying a polylactic acid-based sheet as a core material and stacking a reinforcing layer manufactured by thermocompression bonding nonwoven fabric made of natural fibers and thermoplastic fibers on both sides.

본 발명에 따른 차량 내장재용 적층 구조물은 용융 압출하여 제조된 폴리유산계 쉬트(Polylactic acid sheet)와 상기 폴리유산계 쉬트의 일측 또는 양측에 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)를 혼합하여 구성한 보강층;을 적층하는 것을 특징으로 하며, The laminated structure for a vehicle interior according to the present invention is a polylactic acid sheet (Polylactic acid sheet) prepared by melt extrusion and mixed with natural fibers and thermoplastic fibers on one side or both sides of the polylactic acid sheet. Reinforcing layer configured by the; characterized in that the lamination,

상기 폴리유산계 쉬트는 두께 1mm 내지 8mm이고, 바람직하게는 2mm 내지 6mm인 것을 특징으로 하며, The polylactic acid-based sheet has a thickness of 1mm to 8mm, preferably 2mm to 6mm,

상기 보강층(30) 두께 0.5mm~3.0mm 및 중량 200g/m2~800g/m2이며, 바람직하 게는 두께 0.5mm~1.5mm 및 중량 200g/m2~400g/m2 인 것을 특징으로 하며, 상기 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)의 혼합 비율은 90중량% : 10 중량% 내지 10 중량% : 90 중량%인 것을 특징으로 하며, 천연섬유(Natural fiber)는 양마(Kenaf), 황마(Jute), 아마(Flax), 저마(Ramie), 대마(Hemp)로부터 선택되는 1종 이상인 것을 특징으로 하며, 상기 열가소성 섬유(Thermoplastic fiber)는 폴리유산 섬유(Polylactic acid fiber) 또는 폴리프로필렌 섬유(Polypropylene fiber) 또는 저융점 폴리에스테르 섬유(Low-melting polyester fiber) 또는 폴리유산(Polylactic acid)을 중심으로 폴리프로필렌(Polypropylene)이 감싸진 형태로 만들어진 복합 섬유(Complex fiber)로부터 선택되는 1종 이상인 것을 특징으로 하며,The reinforcement layer (30) thickness is 0.5mm ~ 3.0mm and weight 200g / m 2 ~ 800g / m 2 , preferably characterized in that the thickness 0.5mm ~ 1.5mm and weight 200g / m 2 ~ 400g / m 2 The mixing ratio of the natural fiber and the thermoplastic fiber is 90% by weight: 10% by weight to 10% by weight: 90% by weight, and natural fiber is Kenaf ), Jute, Flax, Ramie, Hemp, characterized in that at least one selected from, the thermoplastic fiber (Thermoplastic fiber) is a polylactic acid fiber (Polylactic acid fiber) or poly 1 selected from polypropylene fiber or low-melting polyester fiber or complex fiber made of polypropylene wrapped around polylactic acid It is characterized by more than one species,

상기 보강층 상부면 또는 하부면에 표피재를 더욱 포함하여 차량 내장재를 형성하는 것을 특징으로 한다. Characterized in that the vehicle interior further comprises a skin material on the upper surface or the lower surface of the reinforcing layer.

본 발명은 상술한 바와 같이, 본 발명에 따른 차량 내장재용 적층 구조물은 성형성이 우수하면서 차량 내장재에 필요한 내열성을 확보할 수 있다는 점에서 기술적 특징이 있다. As described above, the present invention has a technical feature in that the laminated structure for a vehicle interior according to the present invention can secure heat resistance required for a vehicle interior while having excellent moldability.

또한, 생분해성이 우수한 소재를 다량 포함하여 친환경적이므로 불량품이 발 생하거나 차량의 폐차 시에 기존의 매립이나 소각의 방법으로도 유해물질의 배출을 최소화할 수 있다는 점에서 기술적 특징이 있다. In addition, since it is environmentally friendly, including a large amount of biodegradable materials, there is a technical feature in that it is possible to minimize the emission of harmful substances by using existing methods of landfilling or incineration when a defective product occurs or when a vehicle is abandoned.

이상에서의 서술은 특정의 실시 예와 관련한 것으로, 청구범위에 의해 나타난 발명의 사상 및 영역으로부터 벗어나지 않는 한도 내에서 다양한 개조 및 변화가 가능하다는 것을 당 업계에서 통상의 지식을 가진 자라면 누구나 쉽게 알 수 있을 것이다.The foregoing description relates to specific embodiments and can be easily understood by those of ordinary skill in the art that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the claims. Could be.

이하, 첨부된 도면을 참조하여, 본 발명에 따른 차량 내장재용 적층 구조물에 대하여 더욱 상세히 설명한다. Hereinafter, with reference to the accompanying drawings, it will be described in more detail with respect to the laminated structure for a vehicle interior according to the present invention.

도 1은 본 발명에 따른 차량 내장재용 적층 구조물의 개략적 사시도이며, 도 2는 본 발명에 따른 적층 구조물을 이용하여 제조된 차량 내장재의 구조를 나타내는 개략적 확대도를 도시한다. 1 is a schematic perspective view of a laminated structure for a vehicle interior according to the present invention, Figure 2 shows a schematic enlarged view showing the structure of the vehicle interior manufactured using the laminated structure according to the present invention.

도 1은 본 발명에 따른 차량 내장재용 적층 구조물의 개략적 사시도를 도시한다. 1 shows a schematic perspective view of a laminate structure for a vehicle interior according to the present invention.

본 발명은 폴리유산계 쉬트(Polylactic acid sheet)(20)를 심재로 적용하며, 양면에 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)로 만든 부직포를 열압착해서 제조한 보강층(30)을 부착한 것을 특징으로 하는 자동차 내장재 용 적층 구조물(10)에 관한 것이다. The present invention is applied to the polylactic acid sheet (Polylactic acid sheet) 20 as a core material, and the reinforcement layer 30 prepared by thermocompression bonding nonwoven fabric made of natural fibers and thermoplastic fibers on both sides It relates to a laminated structure 10 for automobile interior, characterized in that attached.

우선, 상기 폴리유산계 쉬트(Polylactic acid sheet)(20)는 일반적인 용융 압출공법으로 제조된 것으로, 폴리유산(Polylactic acid)을 용융 압출하여 제작하며, 두께가 1mm 내지 8mm 인 것이 바람직하고, 보다 바람직하게는 2mm 내지 6mm 인 것이 바람직하다. First, the polylactic acid sheet 20 is manufactured by a general melt extrusion method. The polylactic acid sheet 20 is manufactured by melt extrusion of a polylactic acid, and preferably has a thickness of 1 mm to 8 mm, more preferably. Preferably 2 mm to 6 mm.

상기 폴리유산계 쉬트(20)의 두께가 1mm 이하인 경우에는 차량 내장재에 적합한 강성이나 내열성을 얻을 수 없고 내장재 제작을 위한 후공정에서 성형성도 떨어지고, 반대로 두께가 8mm 이상이 되면 제조비용이 상승하고 중량도 증가하여 바람직하지 않다.When the thickness of the polylactic acid-based sheet 20 is 1 mm or less, stiffness or heat resistance suitable for vehicle interior materials may not be obtained, and moldability may be lowered in a post process for fabricating interior materials. It is also undesirable to increase.

한편, 한국공개특허 제 2009-0014382호 또는 한국공개특허 제 2004-0066148호에서 사용되는 생분해성 수지 연속 발포 시트나 상기 폴리유산계 쉬트(Polylactic acid sheet)를 단독으로 사용할 때는 차량 내장재 성형 시 예열공정에서 오븐의 철망에 붙어버리는 등의 문제로 성형성이 확보되지 않고 폴리유산(Polylactic acid)의 낮은 열변형온도(50~70℃)로 인해 차량 내장재로 적합하지 않다. On the other hand, when using the biodegradable resin continuous foam sheet or the polylactic acid sheet used alone in Korea Patent Publication No. 2009-0014382 or Korea Patent Publication No. 2004-0066148 alone, preheating process when forming the vehicle interior material Due to problems such as sticking to the wire mesh of the oven, the moldability is not secured, and due to the low heat deformation temperature (50 to 70 ° C.) of polylactic acid, it is not suitable as a vehicle interior material.

따라서, 본 발명은 차량 내장재(50)에 적합한 성형성과 내열성을 확보하기 위해 상기 폴리유산계 쉬트(20)에 보강층(30)을 적층하도록 하며, 상기 보강층(30)은 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)로 구성된 부직포를 열압착하여 제조한 평판이 바람직하다.Therefore, the present invention is to laminate the reinforcement layer 30 on the polylactic acid-based sheet 20 to ensure the formability and heat resistance suitable for the vehicle interior 50, the reinforcement layer 30 is a natural fiber (Natural fiber) and Preferred is a plate produced by thermocompression bonding a nonwoven fabric composed of thermoplastic fibers.

상기 보강층은 천연섬유(Natural fiber)와 폴리유산 섬유(Polylactic acid fiber), 또는 천연섬유(Natural fiber)와 폴리유산(Polylactic acid)을 중심으로 폴리프로필렌(Polypropylene)이 감싸진 형태로 만들어진 복합 섬유(Complex fiber), 또는 천연섬유(Natural fiber)와 폴리유산 섬유(Polylactic acid fiber) 및 폴리프로필렌 섬유(Polypropylene fiber), 저융점 폴리에스테르 섬유(Low-melting polyester fiber), 또는 천연섬유(Natural fiber)와 폴리프로필렌 섬유(Polypropylene fiber) 및 저융점 폴리에스테르 섬유(Low-melting polyester fiber)로 구성된다. The reinforcing layer is a composite fiber made of polypropylene wrapped around natural fiber and polylactic acid fiber, or natural fiber and polylactic acid. Complex fiber, or natural and polylactic acid fiber and polypropylene fiber, low-melting polyester fiber, or natural fiber It consists of polypropylene fiber and low-melting polyester fiber.

상기 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)는 90중량% : 10중량% 내지 10중량% : 90중량%의 혼합 비율인 것이 바람직하다. 이와 같은 비율로 천연섬유와 열가소성 섬유를 혼합하여 보강층을 형성할 경우, 보강층의 성형성과 내열성이 향상될 수 있다. The natural fiber and the thermoplastic fiber are preferably in a mixing ratio of 90% by weight: 10% by weight to 10% by weight: 90% by weight. When the reinforcing layer is formed by mixing natural fibers and thermoplastic fibers in such a ratio, the formability and heat resistance of the reinforcing layer may be improved.

상기 보강층(30)은 일반적인 펠트(Felt) 제조 기술인 오프닝(Opening) 및 카딩(Carding), 니들펀칭(Needle Punching)을 통해서 제조된 부직포를 열압착롤 러(Heating Roller)를 이용해서 얇은 쉬트(Sheet) 형태로 만든 후 롤(Roll) 형태로 권취하며, 두께 0.5mm~3.0mm 및 중량 200g/m2~800g/m2인 것이 사용 가능하나, 경량화에 따른 연비 향상과 폴리유산계 쉬트(Polylactic acid sheet)(20)의 휨 방지 및 형태 안정성를 위한 보강층 역할을 고려한다면 두께 0.5mm~1.5mm 및 중량 200g/m2~400g/m2 인 것이 바람직하다.The reinforcement layer 30 is a non-woven fabric manufactured through opening, carding, and needle punching, which is a general felt manufacturing technique, using a thin sheet using a heat pressing roller. ) And then rolled up in rolls, and can be used with a thickness of 0.5mm ~ 3.0mm and weight of 200g / m 2 ~ 800g / m 2 , but it improves fuel economy and reduces polylactic acid sheet according to weight reduction. Considering the role of the reinforcing layer for bending prevention and shape stability of the sheet 20, it is preferable that the thickness is 0.5mm ~ 1.5mm and weight 200g / m 2 ~ 400g / m 2 .

이하, 본 발명의 적층 구조물의 적층 방법을 구체적으로 설명하도록 한다. Hereinafter, the lamination method of the lamination structure of the present invention will be described in detail.

본 발명의 적층 구조물(10)에서 각 구성층의 적층 방법으로 2가지 방법을 사용할 수 있는데, 우선, 폴리유산계 쉬트(Polylactic acid sheet)(20)를 용융 압출하면서 동시에 그 잠열을 이용하여 상부 및 하부 보강층(30)을 적층하는 방법을 사용할 수 있으며, 다음으로는, 상부 및 하부 보강층(30) 사이에 폴리유산계 쉬트(Polylactic acid sheet)(20)를 삽입시킨 후 이들을 열롤러(Heating Roller)를 이용해서 결합시킴으로써 하부 보강층(30)과 폴리유산계 쉬트(Polylactic acid sheet)(20)와 상부 보강층(30)이 적층하는 방법을 사용할 수 있다. In the laminated structure 10 of the present invention, two methods may be used as the lamination method of each component layer. First, the polylactic acid sheet 20 may be melt-extruded, and at the same time, the upper and the latter may be used by the latent heat. A method of laminating the lower reinforcement layer 30 may be used. Next, a polylactic acid sheet 20 may be inserted between the upper and lower reinforcement layers 30 and then heat-rolled. By combining using the lower reinforcement layer 30, polylactic acid sheet (Polylactic acid sheet) 20 and the upper reinforcement layer 30 can be used a method of laminating.

상기 폴리유산계 쉬트(Polylactic acid sheet)(20)의 폴리유산(Polylactic acid)과 보강층(30)의 열가소성 섬유(Thermoplastic fiber)는 유사한 범위의 용융온도를 갖고 있기때문에 폴리유산계 쉬트(Polylactic acid sheet)(20)와 보강층(30)을 이루고 있는 열가소성 섬유(Thermoplastic fiber)는 상호 물리적으로 결 합하게 된다.Polylactic acid sheet (Polylactic acid sheet) of the polylactic acid sheet (Polylactic acid sheet) 20 and the thermoplastic fiber (Thermoplastic fiber) of the reinforcing layer 30 has a similar melting temperature of the polylactic acid sheet (Polylactic acid sheet) ) 20 and the thermoplastic fibers forming the reinforcing layer 30 are physically bonded to each other.

본 발명과 같이, 상기 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)로 구성된 보강층(30)을 폴리유산계 쉬트(Polylactic acid sheet)(20)의 양측에 적층하게 되면, 차량 내장재용 적층 구조물(10)의 성형성과 내열성을 확보하고 강도와 형태안정성을 향상시킬 수 있다.As in the present invention, when the reinforcement layer 30 composed of the natural fiber and the thermoplastic fiber is laminated on both sides of the polylactic acid sheet 20, the laminated structure for the vehicle interior material The moldability and heat resistance of (10) can be ensured, and the strength and shape stability can be improved.

도 2는 본 발명에 따른 적층 구조물을 이용해서 제조된 차량 내장재의 구조를 나타내는 개략적 확대도를 도시한다. Figure 2 shows a schematic enlarged view showing the structure of a vehicle interior manufactured using a laminated structure according to the present invention.

도 2를 참조하면, 차량 내장재(50) 제조를 위하여, 상기 폴리유산계 쉬트(Polylactic acid sheet)(20)의 양측에 적층 되어 있는 보강층(30)의 한쪽 면에 표피재(40)를 적층하여 제작가능하다. Referring to FIG. 2, in order to manufacture the vehicle interior 50, the skin 40 is laminated on one surface of the reinforcing layer 30 stacked on both sides of the polylactic acid sheet 20. It can be manufactured.

구체적으로, 본 발명에 따른 상기 폴리유산계 쉬트(Polylactic acid sheet)(20)를 심재로 하여 보강층(30)을 순차로 적층시켜 제조된 적층 구조물(10)을 예열오븐과 금형을 이용하여 표피재(40)와 함께 가공함으로써, 적층 구조물(10)을 이용한 차량 내장재(50)를 제작할 수 있다.　Specifically, the laminated structure 10 manufactured by sequentially stacking the reinforcement layer 30 by using the polylactic acid sheet 20 according to the present invention as a core material and using a preheating oven and a mold to prepare a skin material. By processing together with 40, the vehicle interior material 50 using the laminated structure 10 can be manufactured.

상기 표피재(40)는 폴리올레핀계(Polyolefin) 부직포 또는 폴리에스터계(Polyester) 부직포가 사용된다. The skin material 40 may be a polyolefin nonwoven fabric or a polyester nonwoven fabric.

상기와 같이 형성된 차량 내장재(50)는 내열성과 치수안정성이 우수하고 강성이 높을 뿐만 아니라 부품을 폐기할 때에도 기존 제품 대비 우수한 생분해성을 갖고 있으므로 친환경적인 제품이라고 할 수 있다.The vehicle interior material 50 formed as described above is excellent in heat resistance and dimensional stability and has high rigidity, and also has an excellent biodegradability compared to existing products even when discarding parts.

본 발명은 해당 기술분야에서 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 타 실시 예가 가능하다는 점을 이해할 수 있을 것이다. 따라서, 본 발명의 진정한 보호 범위는 첨부된 청구 범위에 의해서만 정해져야 할 것이다.The present invention will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

도 1은 본 발명에 따른 차량 내장재용 적층 구조물의 개략적 사시도.1 is a schematic perspective view of a laminated structure for a vehicle interior according to the present invention.

도 2는 본 발명에 따른 적층 구조물을 이용해서 제조된 차량 내장재의 구조를 나타내는 개략적 확대도.Figure 2 is a schematic enlarged view showing the structure of a vehicle interior manufactured using a laminated structure according to the present invention.

Claims (9)

차량 내장재용 적층 구조물에 있어서, In the laminated structure for vehicle interior materials, 용융 압출하여 제조된 폴리유산계 쉬트(Polylactic acid sheet)(20);A polylactic acid sheet 20 prepared by melt extrusion; 상기 폴리유산계 쉬트(20)의 일측 또는 양측에 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)을 90중량% : 10 중량% 내지 10 중량% : 90 중량% 비율로 혼합하여 구성한 보강층(30);을 적층하는 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.Reinforcing layer 30 composed of a mixture of 90% by weight: 10% by weight to 10% by weight: 90% by weight of natural fibers and thermoplastic fibers on one or both sides of the polylactic acid-based sheet 20 Eco-friendly laminated structure for a vehicle interior, characterized in that stacking. 제 1 항에 있어서,The method of claim 1, 상기 폴리유산계 쉬트(20)는 두께가 1mm 내지 8mm인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.The polylactic acid-based sheet 20 is an eco-friendly vehicle interior laminate structure, characterized in that the thickness of 1mm to 8mm. 제 2 항에 있어서,The method of claim 2, 상기 폴리유산계 쉬트(20)는 두께가 2mm 내지 6mm인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.The polylactic acid-based sheet 20 is an eco-friendly vehicle interior laminate structure, characterized in that the thickness of 2mm to 6mm. 제 1 항에 있어서,The method of claim 1, 상기 보강층(30)은 두께가 0.5mm~3.0mm 및 중량 200g/m2~800g/m2인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.The reinforcement layer 30 has a thickness of 0.5mm ~ 3.0mm and weight 200g / m 2 ~ 800g / m 2 Eco-friendly laminated structure for vehicle interiors, characterized in that. 제 4 항에 있어서,The method of claim 4, wherein 상기 보강층(30)은 두께가 0.5mm~1.5mm 및 중량 200g/m2~400g/m2 인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.The reinforcement layer 30 has a thickness of 0.5mm ~ 1.5mm and weight of 200g / m 2 ~ 400g / m 2 Eco-friendly laminated structure for a vehicle interior. 제 1 항에 있어서, The method of claim 1, 천연섬유(Natural fiber)는 양마(Kenaf), 황마(Jute), 아마(Flax), 저마(Ramie), 및 대마(Hemp)로부터 선택되는 1종 이상인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.Natural fiber is a laminated structure for environmentally friendly vehicle interior material, characterized in that at least one selected from Kenaf, Jute, Flax, Ramie, and Hemp. 제 1 항에 있어서, The method of claim 1, 상기 열가소성 섬유(Thermoplastic fiber)는 폴리유산 섬유(Polylactic acid fiber) 또는 폴리프로필렌 섬유(Polypropylene fiber) 또는 저융점 폴리에스테르 섬유(Low-melting polyester fiber) 또는 폴리유산(Polylactic acid)을 중심으로 폴리프로필렌(Polypropylene)이 감싸진 형태로 만들어진 복합 섬유(Complex fiber)로부터 선택되는 1종 이상인 것을 특징으로 하는 친환경적인 차량 내장재용 적층 구조물.The thermoplastic fiber may be made of polypropylene based on polylactic acid fiber or polypropylene fiber or low-melting polyester fiber or polylactic acid. Eco-friendly laminated structure for a vehicle interior, characterized in that at least one selected from a complex fiber made of a polypropylene) wrapped. 폴리유산계 쉬트(Polylactic acid sheet)(20);Polylactic acid sheet 20; 상기 폴리유산계 쉬트(20)의 일측 또는 양측에 천연섬유(Natural fiber)와 열가소성 섬유(Thermoplastic fiber)을 90중량% : 10 중량% 내지 10 중량% : 90 중량% 비율로 혼합하여 구성한 보강층(30);Reinforcing layer 30 composed of a mixture of 90% by weight: 10% by weight to 10% by weight: 90% by weight of natural fibers and thermoplastic fibers on one or both sides of the polylactic acid-based sheet 20 ); 상기 보강층(30) 일측 또는 양측에 표피재(40);가 형성되는 것을 특징으로 하는 친환경적인 차량 내장재.Eco-friendly vehicle interior, characterized in that the reinforcing layer 30, the skin material 40 on one side or both sides. 제 8 항에 있어서,The method of claim 8, 상기 표피재(40)는 폴리올레핀계(Polyolefin) 부직포 또는 폴리에스터계(Polyester) 부직포인 것을 특징으로 하는 친환경적인 차량 내장재.The skin material 40 is an environmentally friendly vehicle interior material, characterized in that the polyolefin (Polyolefin) nonwoven fabric or polyester (Polyester) nonwoven fabric.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101228143B1 (en) * 2011-03-17 2013-01-31 엔브이에이치코리아(주) Manufacturing method of biodegradable composite panel for car interior
KR101301648B1 (en) * 2013-05-08 2013-08-29 주식회사 미래기술 Method for producing higg quality fabric and construction material using hemp textile and bio-degradation seat produced by the same
US9597856B2 (en) 2013-12-05 2017-03-21 Hanil E-Hwa Co., Ltd. Light-weight, multi-layered composite substrate and method of making the same
CN107245808A (en) * 2017-06-27 2017-10-13 杭州豫扬新材料科技有限公司 It is a kind of for new glue-free cotton of sofa and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101228143B1 (en) * 2011-03-17 2013-01-31 엔브이에이치코리아(주) Manufacturing method of biodegradable composite panel for car interior
KR101301648B1 (en) * 2013-05-08 2013-08-29 주식회사 미래기술 Method for producing higg quality fabric and construction material using hemp textile and bio-degradation seat produced by the same
US9597856B2 (en) 2013-12-05 2017-03-21 Hanil E-Hwa Co., Ltd. Light-weight, multi-layered composite substrate and method of making the same
CN107245808A (en) * 2017-06-27 2017-10-13 杭州豫扬新材料科技有限公司 It is a kind of for new glue-free cotton of sofa and preparation method thereof

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