KR0137198B1 - Inner trim laminar of automobile used light weight base material - Google Patents

Inner trim laminar of automobile used light weight base material

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Publication number
KR0137198B1
KR0137198B1 KR1019920020182A KR920020182A KR0137198B1 KR 0137198 B1 KR0137198 B1 KR 0137198B1 KR 1019920020182 A KR1019920020182 A KR 1019920020182A KR 920020182 A KR920020182 A KR 920020182A KR 0137198 B1 KR0137198 B1 KR 0137198B1
Authority
KR
South Korea
Prior art keywords
lamina
polypropylene
substrate
automotive interior
skin material
Prior art date
Application number
KR1019920020182A
Other languages
Korean (ko)
Other versions
KR940008876A (en
Inventor
이태승
Original Assignee
전성원
현대자동차주식회사
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Priority to KR1019920020182A priority Critical patent/KR0137198B1/en
Publication of KR940008876A publication Critical patent/KR940008876A/en
Application granted granted Critical
Publication of KR0137198B1 publication Critical patent/KR0137198B1/en

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Classifications

    • 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
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B29C65/4805—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding characterised by the type of adhesives
    • B29C65/481—Non-reactive adhesives, e.g. physically hardening adhesives
    • B29C65/4815—Hot melt adhesives, e.g. thermoplastic adhesives
    • 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
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • 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
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • 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
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • 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
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. 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
    • B32B2605/08—Cars

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)

Abstract

본 발명은 자동차용 내장재에 관한 것으로서, 더욱 상세하게는 자동차용 내장재의 구성재료에 있어 연성을 가지는 열가소성 올레핀(Thermoplastic Olefin)에 폴리프로필렌 또는 폴리에칠렌 포움(foam)을 열융착 라미네이트(laminate)시킨 후 이것을 경성 폴리프로필렌에 열성형시키므로서 경량성이 뛰어나고 재회수가 가능한 자동차용 내장재에 관한 것이다.The present invention relates to an automotive interior material, and more particularly, after thermally fusion-laminating polypropylene or polyethylene foam to a thermoplastic olefin having ductility in a constituent material of an automotive interior material. The present invention relates to an automotive interior material which is excellent in light weight and recyclable by thermoforming to rigid polypropylene.

Description

경량성기재를 사용한 자동차 내장재 라미나Automotive interior lamina using lightweight materials

본 발명은 자동차용 내장재에 관한 것으로서, 더욱 상세하게는 자동차용 내장재의 구성재료에 있어 연성을 가지는 열가소성 올레핀(Thermoplastic Olefin, 이하 TPO라함)에 폴리프로필렌 또는 폴리에칠렌 포움(foam)을 영융착 라미네이트(laminate)시킨 후 이것을 경성 폴리프로필렌에 열성형시키므로서 경량성이 뛰어나고 재회수가 가능한 자동차용 내장재에 관한 것이다.The present invention relates to automotive interior materials, and more particularly, polypropylene or polyethylene foams are fused with thermoplastic olefins (hereinafter referred to as TPO) in constituent materials of automotive interior materials. The present invention relates to an automotive interior material which is excellent in light weight and recyclable by thermoforming it to rigid polypropylene.

종래 자동차용 내장재인 트림(Trim)구조는 여러층으로 이루어져 있으면서 복합적인 재료들이 사용되고 있는 바, 표피부분은 PVA 시이트나 천(cloth)으로 되어 있고 그 표피층 밑에는 폴리에틸렌, 폴리프로필렌 또는 폴리우레탄 패드 등을 접착제로 접착한 후 이를 기재에 접착하는 방법으로 제조되고 있다.Conventional automotive interior trim structure is composed of multiple layers and complex materials are used. The skin part is made of PVA sheet or cloth, and under the skin layer is polyethylene, polypropylene or polyurethane pad. It is prepared by a method of adhering the adhesive with an adhesive and then to the substrate.

이러한 재료들을 접합시킨 후 성형하는 방법은 수지팰트(resin felt)를 열성형하고, 패드가 붙은 PVC 표피재를 진공성형 또는 압공성형한 후 이 수지팰트와 PVC표피재를 서로 접착성형하는데, 이때 수지팰트 대신 목재스톡(wood stock)또는 하드보드(hard board)을 사용하기도 한다.The method of joining and molding these materials is thermoforming a resin felt, vacuum-forming or press-molding the PVC skin with a pad, and then molding the resin felt and the PVC skin with each other. Wood stock or hard boards may be used instead of felt.

그러나 이러한 재료들로 구성된 종래의 자동차용 내장재는 제조시 발생하는 파편이나 패차시 생기는 재료들의 재회수(recycle)가 불가능하여 비경제적이며 공해를 일으킬 우려가 크다.However, the conventional automotive interior materials composed of such materials are not economical and cause high pollution because it is not possible to recycle the materials generated during the manufacturing process.

따라서, 본 발명자는 상기와 같은 종래 내장재의 문제점을 해결하고자 경량성이 뛰어난 재료들을 사용하고 접착제 없이 열성형시키므로서 본 발명의 자동차용 내장재를 개발하게 되었다.Therefore, the present inventors have developed the automotive interior materials of the present invention by using materials having excellent lightness and thermoforming without adhesive to solve the problems of the conventional interior materials as described above.

본 발명은 자동차용 내장재에 있어서, 표피재로 열가소성 올레핀을 사용하고 여기에 폴리프로필렌 포움을 열융착시켜 기재인 경성프로필렌에 열성형시키므로서 경량성이 뛰어나고 재회수가 가능한 자동차용 내장재를 제공하는데 그 목적이 있다.The present invention provides an automotive interior material that is excellent in light weight and recyclable by using thermoplastic olefin as a skin material and thermoforming a polypropylene foam thereon and thermoforming it to a rigid propylene substrate. There is this.

이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.

본 발명은 표피재와 패드재가 기재에 적층 접착된 자동차용 내장재에 있어서, 표피재로서 열가소성 올레핀을 사용하고 그 밑에 폴리프로필렌 또는 폴리에틸렌 패드를 열융착으로 라미네이트시킨 다음 이것을 폴리프로필렌 기재에 열성형 접착시켜서 된 것을 특징으로 하는 자동차용 내장재에 관한 것이다.The present invention relates to an automotive interior material in which a skin material and a pad material are laminated and bonded to a substrate, wherein thermoplastic olefin is used as the skin material, and a polypropylene or polyethylene pad is thermally laminated thereunder, followed by thermoforming adhesion to the polypropylene substrate. It relates to a car interior material characterized in that.

이하, 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.

본 발명은 표피재와 패드가 기재에 적층 접착된 자동차용 내장재에 있어서, 연성을 가지는 열가소성 엘라스토머(Thermoplastic Elastomer) 중에서 선택된 열가소성 올레핀(TOP)에 폴리프로필렌 포움 또는 폴리에틸렌 포우을 패드재로 하여 열융착 라미네이트(laminate)시킨 후 경성 프로필렌 기재에 열성형 또는 경성 폴리프로필렌 기재를 압출성형하므로써 자동차용 재장재를 제조하는 방법 및 그 재료구성을 특징으로 한다.The present invention is an automotive interior material in which the skin material and the pad are laminated and adhered to a substrate, wherein the thermoplastic olefin (TOP) selected from ductile thermoplastic elastomer (Thermoplastic Elastomer) is a polypropylene foam or polyethylene foam as a pad material heat-sealing laminate ( It is characterized by a method for producing automotive materials by the thermoforming or the extrusion of a rigid polypropylene substrate to a rigid propylene substrate after the laminate and its material configuration.

본 발명의 표피재로는 열가소성 올레핀을 사용하는데, 이 열가소성 올레핀쉬트는 연화온도가 90∼150℃이고 바람직하게는 120∼140℃이며, 쉐어 경도(Shore-D)는 15∼40이고 바람직하게는 25∼35이며 또한 밀도는 0.85∼0.91g/㎤이고 바람직하게는 0.87∼0.89g/㎤이다.As the skin material of the present invention, a thermoplastic olefin is used. The thermoplastic olefin sheet has a softening temperature of 90 to 150 ° C, preferably 120 to 140 ° C, and a shear hardness (Shore-D) of 15 to 40, preferably. 25-35, density is 0.85-0.91 g / cm <3>, Preferably it is 0.87-0.89g / cm <3>.

이러한 열가소성 올레핀으로 된 표피재 시이트는 일반적으로 그 제조방법이 문헌에 공지되었으며, 흔히 폴리프로필렌에 에틸렌프로필렌 모노머를 배합 및 부분가교시킨후 압출 또는 칼렌더 성형으로 제조한다.Skin material sheets of such thermoplastic olefins are generally known in the literature for their preparation, and are often produced by blending and partially crosslinking ethylene propylene monomers in polypropylene, followed by extrusion or calender molding.

또한, 본 발명에 따르면 표피재 시이트로서 열가소성 올레핀 대신 폴리프로필렌계 부직포를 사용할 수도 있다.In addition, according to the present invention, a polypropylene-based nonwoven fabric may be used instead of the thermoplastic olefin as the skin material sheet.

이렇게 하여 제조된 표피재에 20∼30배로 고발포한 폴리프로필렌 또는 폴리에틸렌 패드를 압출 및 칼렌더 성형에 의하여 열융창시킬 수 있는데, 양호한 상태의 제품을 얻기 위해서는 폴리프로필렌 패드가 더 바랍작하다.The polypropylene or polyethylene pad foamed 20 to 30 times higher in the skin material thus prepared can be thermally melted by extrusion and calender molding. In order to obtain a good quality product, the polypropylene pad is more desirable.

또한, 재료의 적용부위에 따라 패드 없이도 표피재를 기재에 직접 열융착시킬 수도 있다.In addition, depending on the application of the material, the skin may be directly heat-sealed to the substrate without a pad.

한편, 상기의 표피재는 표면에 광택이나 장식성을 주기 위하여 엠보싱하거나 표면처리제, 그래인, 프린터 패턴을 사용하거나 라카로 마무리를 하기도 한다.On the other hand, the skin material may be embossed, surface treatment agents, grains, printer patterns or finish with a lacquer in order to give gloss or decoration to the surface.

또한, 문헌에 공지된 자외선 흡수제, 각종 안료, 살진균제, 난연제 또는 활제 등 각종의 부가제를 통상의 양만큼 표피제에 함유시키거나 표면처리에 사용할 수도 있다.In addition, various additives such as ultraviolet absorbers, various pigments, fungicides, flame retardants or lubricants known in the literature may be contained in the epidermal agent or used for surface treatment.

한편, 본 발명에 따르면 표피재에 패드재를 열융착시킨 층과 경량성 기재 사이에 열융착용 핫맬트필름(hot melt film)을 첨가하여 양자 사이의 열융착을 더욱 확실하게 할 수도 있는 바, 이러한 핫맬트 필름은 폴리에틸렌이나 폴리프로필렌 필름으로 만들어진다.Meanwhile, according to the present invention, a hot melt film for heat fusion may be added between the layer on which the pad material is thermally fused to the skin material and the lightweight substrate to further ensure thermal fusion between the two. Hot malt film is made of polyethylene or polypropylene film.

본 발명의 내장재에 있어서, 기재로는 폴리프로필렌을 주성분으로 하고 여기에 경량성을 부여하기 위해 스카치라이트 글라스버블(scotchlite glass bubble, 소듐 보로 실리케이트 재질로 속이 비어 있는 구형에 가까운 무기충전물)을 배합하여 제조하는데 그 특징이 있다.In the interior material of the present invention, as a base material, polypropylene is used as a main component, and in order to give lightness thereto, a scotchlite glass bubble (sodium filler filled with a hollow sphere made of sodium boro silicate) is formulated. It is characterized by manufacturing.

스카치라이트 글라스버블의 평균입경은 10∼210μ이고, 적당한 평균입경은 10∼30μ이다.The average particle diameter of Scotchlite glass bubble is 10-210 micrometers, and a suitable average particle diameter is 10-30 micrometers.

또한, 스카치라이트 글라스버블에 있어서 빈 공간 공기 함유량은 전체부피중 10∼40%를 차지하는데, 공기가 함유되어 있는 까닭에 종전의 무기충전물에 비해 경량화를 높일 수 있는 것이다.In addition, the empty space air content in the Scotchlite glass bubble accounts for 10 to 40% of the total volume, and because of the air content, it is possible to increase the weight reduction compared to the conventional inorganic filler.

여기서 사용된 버블의 평균입경이 상기 범위보다 크면 상용성이 나쁜 문제점이 있다.If the average particle diameter of the bubble used herein is larger than the above range, there is a problem of poor compatibility.

기재의 조성은 폴리프로필렌 100 중량부와 통상 스카치라이트 글라스버블 1 ∼ 20 출량부와 충전재 1∼24 중량부, 바람직하게는 스카치라이트 글라스버블 10∼21 중량부와 충전재 1-15 중량부로 구성되어 있다.The composition of the base material is composed of 100 parts by weight of polypropylene, usually 1 to 20 parts by weight of Scotchlite glass bubbles, 1 to 24 parts by weight of filler, preferably 10 to 21 parts by weight of Scotchlite glass bubble, and 1-15 parts by weight of filler. .

이러한 기재의 조성비율은 물성 또는 경량성면에서 바람직하다.The composition ratio of such a substrate is preferable in terms of physical properties or light weight.

또한, 본 발명에서 사용 가능한 충전재의 범위는 유리섬유, 탈크, 고체유리비드(solid glass beads), 셀룰로오스 분말, 목재가루, O-LITE(micro hollow spheres), 점토 등이다.In addition, the range of filler usable in the present invention is glass fiber, talc, solid glass beads (solid glass beads), cellulose powder, wood flour, O-LITE (micro hollow spheres), clay and the like.

그외 부가재로 각종 안료, 안정화제, 난연제, 활제, 살진균제 또는 결합체 등을 사용할 수 있다.As other additives, various pigments, stabilizers, flame retardants, lubricants, fungicides or binders can be used.

이러한 기재는 임의의 부가재와 충전재를 앵커(anchor), 시그마(sigma) 등의 유동성이 좋고 낮은 전단력을 가지는 믹서로 배합하고 이를 트윈스크류(twin screw)를 가지는 압출기로 압출하거나 칼렌더링에 의해서 통상의 방법에 따라 제조할 수 있다.Such a substrate is usually blended with an additive and a filler by a mixer having good fluidity and low shear force such as anchor, sigma, etc. and extruded by an extruder having a twin screw or by calendering. It can manufacture according to the method of.

이러한 기재를 자동차 내장재로 사용할 때는 지지성이 양호하여야 하는데, 이를 위하여 굴곡탄성율이 12,000∼35,000kg/㎠(ASTM D-790), 적당하기로는 23,000∼26,500kg/㎠이며, 굴곡강도는 250∼450kg/㎠, 적당하기로는 300∼400kg/㎠이다. 또한 인장강도는 150 ∼ 300 kg/㎠(ASTM D638), 적당하기로는 170∼250kg/㎠이다.When using these materials as automotive interior materials, the supportability should be good. For this purpose, the flexural modulus is 12,000-35,000kg / ㎠ (ASTM D-790), suitably 23,000-26,500kg / ㎠, and the flexural strength is 250-450kg. / Cm 2, preferably 300 to 400 kg / cm 2. The tensile strength is 150 to 300 kg / cm 2 (ASTM D638), and suitably 170 to 250 kg / cm 2.

이와같은 자동차 내장재는 용도에 따라 표피재는 0.15∼1.5mm, 적절하기로는 0.3∼1.1mm, 패드재는 2.0∼5.0mm, 적절하기로는 2.5∼3.5mm, 기재는 1.5 ∼ 5.0mm, 적절하기로는 2.5 ∼ 3.5mm의 두께인 것을 사용한다. 이때 표피재의 두께가 너무 두꺼우면 성형상의 문제가 있고 너무 얇으면 처지는 문제가 있다.Such interior materials for automobiles may be 0.15 to 1.5 mm, suitably 0.3 to 1.1 mm, pad materials 2.0 to 5.0 mm, suitably 2.5 to 3.5 mm, substrates 1.5 to 5.0 mm, and suitably 2.5 to 1.5 mm depending on the application. Use a thickness of 3.5mm. At this time, if the thickness of the skin material is too thick, there is a molding problem, and if too thin, there is a problem of sagging.

한편, 본 발명의 자동차 내장재의 제조공정을 구체적으로 살표보면, 다음과 같다.On the other hand, in detail the manufacturing process of the automotive interior material of the present invention, as follows.

먼저 압출성형에 의한 방법을 살펴보면, 폴리프로필렌 패드에 표피재인 열가소성 올레핀 수지를 균일하게 압출 도포한 다음 다시 2차로 폴리프로필렌 패드이면에 폴리프로필렌 및 중공형 무기충전재를 배합한 재료를 압출기로 도포한다.First, a method by extrusion molding is applied to the polypropylene pad by uniformly applying the thermoplastic olefin resin as a skin material, and then applying a material in which the polypropylene and the hollow inorganic filler are mixed with the extruder to the second polypropylene pad.

이때 압출기는 통상 T-다이(die) 압출기를 사용하며 경우에 따라 폴리프로필렌 패드에 표피재인 열가소성 올레핀 수지를 압출한 후 바로 엠보싱 로울에 의해 엠보싱 가공을 하거나 기타 여러형태로 표면처리한다.At this time, the extruder generally uses a T-die extruder, and optionally, extrudes a thermoplastic olefin resin as a skin material onto a polypropylene pad and immediately embosses the surface by embossing rolls or other various forms.

여기서 압출기 끝단의 온도는 210∼230℃로 하며 압출기의 온도는 190∼210℃로 하고 또한 인출속도는 5∼12m/분으로 하며 엠보싱 로울의 온도는 180∼190℃로 한다.The temperature of the end of the extruder is 210 ~ 230 ℃, the temperature of the extruder is 190 ~ 210 ℃, the withdrawal speed is 5 ~ 12m / min and the temperature of the embossing roll is 180 ~ 190 ℃.

한편, 칼렌더(Calender)에 의한 방법은 표피재인 TPO를 통상의 배합에 의해 시이트로 만든 후 폴리프로필렌 패드와 TPO를 수평 예열기에서 170∼185℃의 범위로 예열한 후 180 ∼ 190℃의 칼렌더로 열융착시키고 동일한 방법으로 기재인 폴리프로필렌을 열융착시킨 후 엠보싱가공을 하거나 표면처리한다.On the other hand, the method using a calender is made by sheeting TPO, which is a skin material, by conventional blending, and then preheating the polypropylene pad and TPO in a range of 170 to 185 ° C in a horizontal preheater, and then heating it in a calendar of 180 to 190 ° C. After fusion and thermally fusion of the polypropylene substrate, the substrate is embossed or surface treated.

상기와 같이 제조된 자동차 내장재는 트림(Trim)재 용도에 따라 구성재료들을 진공성형하거나 압공성형을 하여 제품을 제조하고 금형에 따라 메스비키 및 오스비키 성형법을 사용할 수 있다.The automobile interior materials manufactured as described above may be manufactured by vacuum forming or pressure forming the constituent materials according to the use of trim materials, and may use the Mesvikie and Osbiki molding methods depending on the mold.

이러한 본 발명에 따른 자동차 내장재의 제조방법은 모두 접착제를 사용하지 않고 제조할 수 있는 커다란 장점이 있다.All of the manufacturing method of the automobile interior according to the present invention has a great advantage that can be produced without using the adhesive.

따라서, 본 발명의 자동차용 내장재는 종래와는 달리 같은 재질을 사용하고 열융착에 의해 성형 제작되므로 경량성이 우수하고, 접착제의 미사용으로 인해 작업성이 용이하며 작업환경이 개선된다.Therefore, the automotive interior material of the present invention, unlike the prior art using the same material and molded by heat fusion is excellent in light weight, easy to work due to the non-use of the adhesive is improved work environment.

또한, 구성재료에 모두 동일한 올레핀계 재료를 사용함으로써 재료의 조각을 다른 용도로 사용할 수 있으며, 폐기시에도 재회수가 가능하므로 공해방지에도 큰 도움이 되는 등 여러 가지 장점이 있어서 자동차의 내장재, 즉 도어트림, 헤어라이닝 또는 뒷자석 선반 등에 유용하게 사용할 수 있다.In addition, by using the same olefinic material for all the components, the pieces of the material can be used for different purposes, and can be recovered again at the time of disposal, which greatly helps to prevent pollution. It can be useful for trimming, hairlining or rear seat shelves.

이하, 본 발명을 실시예에 의거 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to Examples, but the present invention is not limited by the Examples.

또한, 실시예 1과 같은 칼렌더링 공법보다 압출다이에 의한 공법이 글라스버블(glass bubble)에 안정적이고 최적이다.In addition, the extrusion method is more stable and optimal for glass bubbles than the calendering method as in Example 1.

실시예 1. 자동차 도어트림의 제조Example 1 Manufacture of Automobile Door Trim

기재인 폴리프로필렌 수지 100 중량부에 평균입경이 30∼50μ 크기의 글라스버블(Grass bubble) 및 입경이 10μ 이하인 유리비드와 탈크인 무기충전재를 약 3:1 비율로 혼합시킨 혼합물 상태로 하여 20 중량부를 배합한 후, 압출기로 3 mm 두께로 압출한 다음 표피재인 열가소성 올레핀 쉬트를 유연해질 정도로약 180℃에서 가열한 후 폴리프로필렌 패드와 같이 온도가 185 ℃인 칼렌더 로울에서 열융착한 후 예열시킨 경량성 폴리프로필렌 쉬트를 동일한 방법으로 열융착한 다음 적당한 크기로 잘라 도어트림의 금형 표면오도가 150℃ 이상인 상태에서 160초간 진공 성형한 후 제품을 트리밍한다.20 parts by weight of a glass bubble having an average particle diameter of 30 to 50 μm and a glass bead having a particle diameter of 10 μ or less and a talc inorganic filler are mixed at a ratio of about 3: 1 to 100 parts by weight of the polypropylene resin as a substrate. After mixing the parts, extruded to a thickness of 3 mm with an extruder, and then heated the thermoplastic olefin sheet, which is a skin material, at about 180 ° C. to be soft, and then heat-bonded in a calender roll having a temperature of 185 ° C. like a polypropylene pad, and then preheated. The polypropylene sheet is heat-sealed in the same manner, cut into appropriate sizes, vacuum-molded for 160 seconds while the mold surface error of the door trim is 150 ° C or higher, and the product is trimmed.

그후 도어트림에 붙은 악세사리를 부착한다.Then attach the accessories to the door trim.

Claims (9)

표피재와 패드재가 기재에 적층 접착된 자동차용 내장재에 있어서, 표피재로서 열가소성 올레핀을 사용하고 그 밑에 패드재로서, 폴리프로필렌 또는 폴리에틸렌 패드를 열융착하여 라미네이트시킨 다음 이것을 폴리프로필렌 기재에 열성형 접착시켜서 된 것을 특징으로 하는 자동차용 내장재 라미나.In automotive interior materials in which the skin material and the pad material are laminated and bonded to the substrate, thermoplastic olefins are used as the skin material, and under the pad material, polypropylene or polyethylene pads are thermally fused and laminated, and the thermoforming adhesive is applied to the polypropylene substrate. Automobile interior materials lamina, characterized in that made. 제1항에 있어서, 상기의 열가소성 올레핀은 연화온도가 120∼140℃이고, 쉐어 경도(Shore-D)25∼35이며, 밀도가 0.87∼0.89g/㎤인 것을 특징으로 하는 자동차용 내장재 라미나.According to claim 1, wherein the thermoplastic olefin has a softening temperature of 120 to 140 ℃, shear hardness (Shore-D) of 25 to 35, the density of 0.87-0.89g / cm3 automotive interior materials lamina . 제1항에 있어서, 상기의 기재는 폴리프로필렌 100 중량부와 스카치라이트 글라스버블1∼20 중량부 및 충전재가 1∼24 중량부로 구성되어 있는 것을 특징으로 하는 자동차용 내장재 라미나.The automotive interior lamina according to claim 1, wherein the base material comprises 100 parts by weight of polypropylene, 1 to 20 parts by weight of scotch light glass bubbles, and 1 to 24 parts by weight of a filler. 제3항에 있어서, 상기의 글라스버블의 평균입경은 10∼210μ인 것을 특징으로 하는 자동차용 내장재 라미나4. The interior decoration lamina for automobiles according to claim 3, wherein the glass bubble has an average particle diameter of 10 to 210 mu. 제3항에 있어서, 상기 기재에 첨가되는 충전재는 유리섬유, 탈크, 고체유리비드(solid glass beads), 셀룰로오스 분말, 목재가루, O-LITE(micro hollow spheres)또는 점토인 것을 특징으로 하는 자동차용 내장재 라미나4. The method of claim 3, wherein the filler added to the substrate is glass fiber, talc, solid glass beads, cellulose powder, wood flour, O-LITE (micro hollow spheres) or clay. Interior Lamina 제1항 또는 제3항에 있어서, 상기 기재의 굴곡탄성율 23,000∼26,500kg/㎠(ASTM D-790), 굴곡강도는 300∼400kg/㎠ 그리고 인장강도는 150∼300kg/㎠(ASTM D-638)인 것을 특징으로 하는 자동차용 내장재 라미나According to claim 1 or 3, the flexural modulus of the substrate 23,000 ~ 26,500kg / ㎠ (ASTM D-790), flexural strength is 300 ~ 400kg / ㎠ and tensile strength 150 ~ 300kg / ㎠ (ASTM D-638 Car interior materials lamina, characterized in that 제1항에 있어서, 상기의 표피재와 패드 및 기재는 접착제 없이 압출기 또는 로울을 사용하여 압출성형된 것을 특징으로 하는 자동차용 내장재 라미나.According to claim 1, wherein the skin material, the pad and the substrate is an automotive interior lamina, characterized in that the extrusion molding using an extruder or a roll without an adhesive. 제1항에 있어서, 상기의 표피재로열가소성 올레핀 대신 폴리프로필렌계 부직포를 사용한 것을 특징으로 하는 자동차용 내장재 라미나.The automotive interior lamina according to claim 1, wherein a polypropylene nonwoven fabric is used instead of the thermoplastic olefin. 제1항에 있어서, 상기 표피재와 패드 및 기재는 접착제 없이 예열 후 칼렌더로 열융착하여 라미네이트된 것을 특징으로 하는 자동차용 내장재 라미나.According to claim 1, wherein the skin material, pads and the base material is a car interior lamina, characterized in that the laminate is heat-sealed with a calender after preheating without adhesive.
KR1019920020182A 1992-10-30 1992-10-30 Inner trim laminar of automobile used light weight base material KR0137198B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100683229B1 (en) * 2006-02-16 2007-03-12 현대모비스 주식회사 Polypropylene composite composition
KR100683230B1 (en) * 2006-02-16 2007-03-12 현대모비스 주식회사 Polypropylene composite composition
KR100783617B1 (en) * 2006-05-18 2007-12-10 덕양산업 주식회사 Micro cellular foaming sheet applied multi-layer of instrument panel and manufacturable method
KR101307231B1 (en) * 2011-09-22 2013-10-02 박종순 Reused polypropylene composite for car interior or exterior parts

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100217510B1 (en) * 1997-06-13 1999-09-01 유 희 춘 Car inner plate manufacturing method from thermoplastic resin
KR100321292B1 (en) * 1999-04-29 2002-03-18 이계안 Heat and light-resistant instrument panel and preparing method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100683229B1 (en) * 2006-02-16 2007-03-12 현대모비스 주식회사 Polypropylene composite composition
KR100683230B1 (en) * 2006-02-16 2007-03-12 현대모비스 주식회사 Polypropylene composite composition
KR100783617B1 (en) * 2006-05-18 2007-12-10 덕양산업 주식회사 Micro cellular foaming sheet applied multi-layer of instrument panel and manufacturable method
KR101307231B1 (en) * 2011-09-22 2013-10-02 박종순 Reused polypropylene composite for car interior or exterior parts

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