KR100602658B1 - forming method of skin for internal parts of automobile - Google Patents

forming method of skin for internal parts of automobile Download PDF

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Publication number
KR100602658B1
KR100602658B1 KR1020040004503A KR20040004503A KR100602658B1 KR 100602658 B1 KR100602658 B1 KR 100602658B1 KR 1020040004503 A KR1020040004503 A KR 1020040004503A KR 20040004503 A KR20040004503 A KR 20040004503A KR 100602658 B1 KR100602658 B1 KR 100602658B1
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South Korea
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tpo
skin material
sheet
treatment
embossing
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KR1020040004503A
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Korean (ko)
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KR20050076498A (en
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강병영
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현대모비스 주식회사
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    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/24—Calendering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
    • B05D7/04—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber to surfaces of films or sheets
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/003—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor characterised by the choice of material
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless belts
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/834—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools moving with the parts to be joined
    • B29C66/8341—Roller, cylinder or drum types; Band or belt types; Ball types
    • B29C66/83411—Roller, cylinder or drum types
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
    • C08L27/06—Homopolymers or copolymers of vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L55/00—Compositions of homopolymers or copolymers, obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in groups C08L23/00 - C08L53/00
    • C08L55/02—ABS [Acrylonitrile-Butadiene-Styrene] polymers
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/06—PVC, i.e. polyvinylchloride
    • 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
    • B29K2055/00—Use of specific polymers obtained by polymerisation reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of main groups B29K2023/00 - B29K2049/00, e.g. having a vinyl group, as moulding material
    • B29K2055/02—ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

본 발명은 차량용 내장부품의 표피재 성형방법에 관한 것으로, 표피재를 TPO층과 수지층의 2중구조로 구성함으로써 제품의 미려한 외관 및 친환경적인 요소는 만족시키면서 그 제조원가를 절감시킬 수 있고, 이에 따라 중, 저급차종에도 적용이 가능하여 감성품질을 향상시킬 수 있는 차량용 내장부품의 표피재 성형방법을 제공한다.The present invention relates to a method for forming a skin material of a vehicle interior part, and by constructing the skin material in a double structure of a TPO layer and a resin layer, it is possible to reduce the manufacturing cost while satisfying the beautiful appearance and environmentally friendly elements of the product. The present invention provides a method of forming a skin material of an interior component for a vehicle that can be applied to a middle and low grade model to improve the quality of emotion.

내장부품, 표피재, TPO층, 수지층, 캘린더공정, 압착공정      Interior parts, skin material, TPO layer, resin layer, calendering process, crimping process

Description

차량용 내장부품의 표피재 성형방법{forming method of skin for internal parts of automobile}       Forming method of skin material of vehicle interior parts {forming method of skin for internal parts of automobile}             

도 1은 종래 차량용 내장부품의 단면도,1 is a cross-sectional view of a conventional vehicle interior parts,

도 2는 종래 차량용 내장부품의 표피재 성형과정을 개략적으로 도시한 공정도,Figure 2 is a process diagram schematically showing a skin material forming process of a conventional vehicle interior parts,

도 3은 본 발명에 따른 차량용 내장부품의 단면도,3 is a cross-sectional view of the vehicle interior parts according to the present invention,

도 4는 본 발명에 따른 차량용 내장부품의 표피재 성형과정을 개략적으로 도시한 공정도.Figure 4 is a process diagram schematically showing a skin material forming process of the vehicle interior parts according to the present invention.

*도면의 주요부분에 대한 부호의 설명** Description of the symbols for the main parts of the drawings *

10a : TPO층 10b : 수지층10a: TPO layer 10b: resin layer

30 : 우레탄폼재 50 : 기재  30: urethane foam material 50: base material

70 : 압착롤러 80 : 엠보롤러 70: pressing roller 80: embossing roller

본 발명은 차량용 내장부품의 표피재 성형방법에 관한 것으로, 보다 상세하게는 표피재를 TPO(ThermoPlastic Olefin)층과 수지층의 2중구조로 구성함으로써 제품의 미려한 외관 및 친환경적인 요소는 만족시키면서 그 제조원가를 절감시킬 수 있고, 이에 따라 중, 저급차종에도 적용이 가능하여 감성품질을 향상시킬 수 있는 차량용 내장부품의 표피재 성형방법에 관한 것이다.The present invention relates to a method for forming a skin material of a vehicle interior part, and more specifically, by forming a skin material in a double structure of a TPO (ThermoPlastic Olefin) layer and a resin layer, the beautiful appearance and eco-friendly elements of the product are satisfied while the manufacturing cost thereof is satisfied. The present invention relates to a method for forming a skin material of a vehicle interior part that can be applied to mid- and low-end vehicles and thus improves the quality of emotion.

일반적으로 차량용 내장부품, 예컨대 인스트루먼트 판넬, 도어트림 판넬, 헤드라이닝 등은 도 1에 도시된 바와 같이 표피재(1), 우레탄폼재(3), 기재(5)로 구분되는 3층 적층형태로 이루어져 있다. In general, vehicle interior parts, such as instrument panel, door trim panel, headlining, etc. are made of a three-layer laminated form divided into the skin material (1), urethane foam material (3), the base material (5) as shown in FIG. have.

이때, 상기 표피재(1)로서 진공성형인 경우에는 PVC 혹은 PVC/ABS 얼로이 압출 시트(sheet)나 캘린더(calender) 가공 시트가 널리 사용되어 왔다.In this case, in the case of vacuum forming as the skin material 1, PVC or PVC / ABS alloy extruded sheet or calendered sheet has been widely used.

그러나, 근래에는 환경친화성, 리사이클성, 경량성 등에서 유리한 올레핀계 열가소성 일래스토머 시트(ThermoPlastic Olefin sheet ;이하 TPO 시트라 함)로의 대체를 위한 연구가 활발히 진행되고 있으며 이미 실용화에 이르고 있다.However, in recent years, research has been actively conducted to replace olefinic thermoplastic elastomer sheets (hereinafter referred to as TPO sheets), which are advantageous in terms of environmental friendliness, recycling, and light weight, and have already been put into practical use.

이와 같이 차량용 내장부품의 표피재(1)로 사용되는 상기 TPO 시트는 도 2에 도시된 바와 같이 캘린더공정(P1), 엠보공정(P2), 코로나 처리공정(P3), 표면 스프레이공정(P4), 이면처리공정(P5)을 거쳐 성형된다.As described above, the TPO sheet used as the skin material 1 of the vehicle interior part has a calendering process (P1), an embossing process (P2), a corona treatment process (P3), and a surface spraying process (P4) as shown in FIG. It is shape | molded through back surface treatment process P5.

상기 캘린더공정(P1)은 TPO와 첨가제가 혼합된 원료를 복수개로 포개진 캘린더롤러 사이에 차례로 통과시킴으로써 박판 형태의 제품으로 가공하는 공정이다.The calendering step (P1) is a step of processing into a thin plate-like product by sequentially passing a plurality of raw material mixed with TPO and additives between the stacked calender rollers.

그리고, 상기 엠보공정(P2)은 상기 캘린더공정에서 배출된 제품을 상하로 구 성된 엠보롤러 사이로 통과시킴으로써 표면에 올록볼록한 모양을 돌출 형성하는 공정이다.And, the embossing step (P2) is a step of protruding the convex shape on the surface by passing the product discharged from the calendering process between the embossing rollers configured up and down.

이어서, 상기 코로나 처리공정(P3)은 상기 엠보공정에서 배출된 제품에 코로나 방전처리를 가함으로써 표면을 활성화시켜 표면 특성을 부여하는 공정이며, 상기 표면 스프레이공정(P4)은 제품에 표면전처리제 및 최종 코팅제인 황변을 방지하기 위한 표면처리제를 사용하여 표면처리를 실시하는 공정이다.Subsequently, the corona treatment process (P3) is a process of activating a surface by applying a corona discharge treatment to the product discharged from the embossing process to impart surface characteristics, and the surface spray process (P4) is a surface pretreatment agent and The surface treatment is performed using a surface treatment agent to prevent yellowing, which is a final coating agent.

마지막으로, 상기 이면처리공정(P5)은 롤러에 프라이머 사용을 통해 TPO 시트와 우레탄폼과의 접착력을 향상시켜 둘이 강고하게 접착될 수 있도록 하는 공정이다.Finally, the back surface treatment step (P5) is to improve the adhesion between the TPO sheet and the urethane foam through the use of a primer on the roller so that the two can be firmly bonded.

그러나, 종래 TPO 시트는 기존의 다른 시트에 비해 여러 가지 장점에도 불구하고 원가가 높아 중,저급차종에는 그 적용이 어려울 뿐만 아니라 우레탄폼과의 접착력이 약하기 때문에 발포전에 별도의 이면처리공정을 거쳐야 하는 번거로움이 있었다.However, the conventional TPO sheet has a high cost in spite of various advantages over other sheets, and it is difficult to apply to the middle and low grade cars, and the adhesive force with the urethane foam is weak. There was a hassle.

이에 본 발명은 상기와 같은 문제점들을 해소하기 위해 안출된 것으로서, 본 발명의 목적은 제품의 미려한 외관 및 친환경적인 요소는 만족시키면서 그 제조원가를 절감시킬 수 있어 중, 저급차종에도 적용이 가능한 차량용 내장부품의 표피재 성형방법을 제공하는데 있다.
Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to satisfy the beautiful appearance and eco-friendly elements of the product while reducing the manufacturing cost of the vehicle interior parts that can be applied to low and medium models It is to provide a method of forming the skin material.

상기와 같은 목적을 달성하기 위한 본 발명은, TPO와 첨가제가 혼합된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판 형태로 가공하는 TPO시트 캘린더공정, 저급 PVC 또는 저급 ABS 중 어느 하나와 첨가제가 혼합된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판형태로 가공하는 수지시트 캘린더공정, 상기 각 캘린더공정에서 배출된 TPO시트와 수지시트를 압착롤러 사이로 통과시켜 압착하면서 상호 접착시키는 압착공정, 상기 압착공정에서 배출된 제품을 엠보롤러 사이로 통과시켜 성형시키는 엠보공정, 상기 엠보공정에서 배출된 제품에 코로나 방전처리를 가하는 코로나 처리공정, 상기 코로나 처리공정에서 배출된 제품의 표면에 표면전처리제 및 표면처리제를 사용하여 표면처리를 실시하는 표면 스프레이공정을 포함하여 이루어지는 것을 특징으로 하는 차량용 내장부품의 표피재 성형방법을 제공한다.In order to achieve the above object, the present invention, TPO sheet calendering process to pass through the raw material mixed with TPO and additives between the calender rollers in turn to form a thin plate form, lower PVC or lower ABS any one of the additives are mixed Resin sheet calendering process to pass raw materials between calender rollers in turn to form a thin plate shape; Crimping process to pass the TPO sheet and resin sheet discharged from each calendering process through the compacting rollers and press them together to be pressed together; The embossing process for passing the molded product through the embossing roller, forming the corona discharge treatment to the product discharged from the embossing process, using a surface pretreatment and surface treatment agent on the surface of the product discharged from the corona treatment process Characterized by comprising a surface spray process for performing a surface treatment It provides a method for forming the skin material of the vehicle interior parts.

이때, 상기 TPO시트와 수지시트 중 적어도 어느 한쪽의 접합면에 프라이머를 처리하여 둘 사이의 접착력이 향상될 수 있도록 하는 프라이머 처리공정이 상기 압착공정의 이전단계에 더 포함되는 것을 특징으로 한다.At this time, the primer treatment process to improve the adhesion between the two by treating the primer on at least one of the bonding surface of the TPO sheet and the resin sheet is characterized in that it is further included in the previous step of the pressing process.

이하, 첨부한 도면을 참조하여 본 발명의 바람직한 실시예에 대해 상세하게 설명하도록 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도 3은 본 발명에 따른 차량용 내장부품의 단면도이고, 도 4는 본 발명에 따른 차량용 내장부품의 표피재 성형과정을 개략적으로 도시한 공정도이다.3 is a cross-sectional view of a vehicle interior component according to the present invention, Figure 4 is a process diagram schematically showing a process for forming the skin material of the vehicle interior component according to the present invention.

도 3에 도시된 바와 같이, 차량용 내장부품은 표피재(10), 우레탄폼재(30), 기재(50)로 구분되는 3층 적층형태로 이루어지며, 이때 상기 표피재(10)는 TPO층 (10a)과 수지층(10b)으로 이루어진 2중구조를 갖는다.As shown in Figure 3, the vehicle interior parts are made of a three-layer laminated form divided into a skin material 10, urethane foam material 30, the base material 50, wherein the skin material 10 is a TPO layer ( It has a double structure which consists of 10a) and the resin layer 10b.

상기 표피재(10)의 표면을 이루는 상기 TPO(ThermoPlastic Olefin)는 제품의 미려한 외관을 형성하는데 적합할 뿐만 아니라 친환경적인 요소를 갖추고 있어 근래 자동차뿐만 아니라 각종 산업분야에서 내장부품의 재료로서 널리 이용되고 있다.The TPO (ThermoPlastic Olefin) forming the surface of the skin material 10 is not only suitable for forming a beautiful appearance of the product, but also has an environmentally friendly element and is widely used as a material for interior parts in various industrial fields as well as automobiles. have.

그리고, 상기 TPO층(10a)의 이면에 접착되는 수지층(10b)은 저급 PVC 또는 저급 ABS 중 어느 하나로 이루어진다.The resin layer 10b adhered to the back surface of the TPO layer 10a is made of any one of lower PVC and lower ABS.

이러한 수지층(10b)의 재료들은 상기 TPO에 비해 가격이 저렴한 장점이 있다.The material of the resin layer 10b has an advantage of low cost compared to the TPO.

이와 같이 TPO층(10a)과 수지층(10b)으로 이루어진 표피재(10)의 전체두께를 1.2t라고 하면, 이에 대해 상기 TPO층(10a)은 0.4t~0.6t, 상기 수지층(10b)은 0.8t~0.6t의 두께로 이루어지는 것이 바람직하며, 이는 미려한 외관을 충분히 형성하면서도 재료비는 적절하게 저감시킬 수 있게 된다.Thus, if the total thickness of the skin material 10 which consists of the TPO layer 10a and the resin layer 10b is 1.2t, on the other hand, the said TPO layer 10a is 0.4t-0.6t, and the said resin layer 10b Silver is preferably made of a thickness of 0.8t ~ 0.6t, it is possible to form a beautiful appearance sufficiently while reducing the material cost appropriately.

상기한 바와 같이 TPO층(10a)과 수지층(10b)의 2중구조로 이루어진 차량용 내장부품의 표피재 성형방법을 살펴보면 다음과 같다.As described above, the method of forming the skin material of the vehicle interior part having the double structure of the TPO layer 10a and the resin layer 10b is as follows.

도 4에 도시된 바와 같이, 먼저 캘린더공정(S1,S2)을 통해 TPO시트와 수지시트를 각각 제작한다.As shown in Figure 4, first through the calender process (S1, S2) to produce a TPO sheet and a resin sheet, respectively.

상기 TPO시트는 TPO와 첨가제가 혼합된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판 형태로 가공함으로써 얻게 된다.(S1)The TPO sheet is obtained by sequentially passing a raw material mixed with TPO and an additive between the calender rollers and processing the sheet into thin sheets. (S1)

또한, 이와는 별도로 저급 PVC 또는 저급 ABS 중 어느 하나와 첨가제가 혼합 된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판 형태로 가공함으로써 수지시트를 얻게 된다.(S2)In addition, the resin sheet is obtained by separately passing a raw material mixed with any one of the lower PVC or the lower ABS and the additive in between the calender rollers and processing the sheet in the form of a thin plate (S2).

이때, 상기 각각의 캘린더공정(S1,S2)에 사용되는 첨가제는 각각의 용도에 따라 가소제, 착색제 또는 안료, 염료 등의 일반적인 첨가제가 사용될 수 있으며 이는 상기 TPO 또는 수지의 물성을 크게 해치지 않는 범위 내에서 포함될 수 있다.At this time, the additives used in each of the calendering process (S1, S2) may be used a general additive such as plasticizers, colorants or pigments, dyes according to the respective uses, which do not significantly damage the physical properties of the TPO or resin Can be included in.

상기와 같이, 캘린더공정(S1,S2)에 의해 각각 별도로 제작된 TPO시트와 수지시트는 압착공정(S3)을 거쳐 서로 접착된다.As described above, the TPO sheet and the resin sheet separately prepared by the calendering steps S1 and S2 are bonded to each other through the pressing step S3.

이러한 압착공정(S3)은 상기 TPO시트와 수지시트를 압착롤러(70) 사이로 통과시켜 압착하면서 상호 접착시키게 된다.This pressing process (S3) is passed through the TPO sheet and the resin sheet between the pressing roller 70 is pressed while being bonded to each other.

이때, 상기 TPO시트와 수지시트간의 접착력을 향상시키기 위해 그 접합면에 접착력 향상제와 같은 프라이머를 처리하는 것이 보다 바람직하며, 이를 위해 상기 각 시트의 캘린더공정(S1,S2)에 사용되는 마지막 캘린더롤러(60a,60b)에 프라이머를 사용한다.At this time, in order to improve the adhesion between the TPO sheet and the resin sheet, it is more preferable to treat a primer such as an adhesion enhancer on the bonding surface, and for this purpose, the last calender roller used in the calendering process (S1, S2) of each sheet. Use primers for (60a, 60b).

이는 상기 압착롤러(70) 진입이전에 각 시트의 접합면이 프라이머 처리되도록 하기 위함으로 압착롤러(70) 이전의 마지막 캘린더롤러(60a,60b)에 프라이머가 사용되면 진행상 자연적으로 각 시트의 접합면이 프라이머 처리된다.This is to ensure that the bonding surface of each sheet is primed before entering the pressing roller 70. If a primer is used for the last calender rollers 60a and 60b before the pressing roller 70, the bonding surface of each sheet is naturally progressed. This primer is treated.

이때, 상기 프라이머는 TPO시트 측(60a) 또는 수지시트 측(60b)의 캘린더롤러 중 어느 한쪽에만 사용되어도 무방하다.At this time, the primer may be used only on any one of the calender rollers on the TPO sheet side 60a or the resin sheet side 60b.

이와 같이 하여 압착공정(S3)이 마무리되면, TPO층과 수지층으로 이루어진 2중구조의 표피재 전신이 완성되며, 계속해서 통상의 엠보공정(S4), 코로나 처리공 정(S5), 표면 스프레이공정(S6) 등을 거쳐 표피재의 성형이 완료되게 된다.When the pressing process S3 is completed in this manner, the entire skin material having a double structure composed of the TPO layer and the resin layer is completed, and then the usual embossing process (S4), corona treatment process (S5), and surface spraying process are completed. The shaping of the skin material is completed through S6 and the like.

상기 엠보공정(S4)은 제품을 상하로 구성된 엠보롤러(80) 사이로 통과시킴으로써 표면에 올록볼록한 모양을 돌출 형성하는 공정이다.The embossing step (S4) is a step of protruding the convex shape on the surface by passing the product between the upper and lower embossing roller (80).

상기 코로나 처리공정(S5)은 제품에 코로나 방전처리를 가하여 표면을 활성화시켜 표면특성을 부여하는 공정이다.The corona treatment step (S5) is a process of applying a corona discharge treatment to a product to activate a surface to impart surface characteristics.

마지막으로, 상기 표면 스프레이공정(S6)은 제품의 표면에 표면전처리제 및 표면처리제를 사용하여 표면처리를 실시하는 공정이다.Finally, the surface spray step (S6) is a step of performing a surface treatment using a surface pretreatment agent and a surface treatment agent on the surface of the product.

이상에서 설명한 차량용 내장부품의 표피재 성형공정은 재료들이 각각의 롤러 흐름을 타고 재료가 일정한 진행방향으로 연속해서 이동됨으로써 재료의 투입에서부터 제품의 완성까지 전 과정이 자동화로 이루어지게 된다.In the skin material forming process of the vehicle interior parts described above, the material is continuously moved in a certain direction of progression through the flow of each roller, so that the entire process from the input of the material to the completion of the product is automated.

이하, 본 실시예의 작용 및 효과를 상세하게 설명하도록 한다.Hereinafter, the operation and effects of the present embodiment will be described in detail.

상기한 바와 같이, 본 발명에 따른 차량용 내장부품의 표피재(10)는 제품의 외관에 직접 관계되는 표면은 TPO층(10a)으로 하고 그 이면은 저급 재질의 수지층(10b)으로 구성함으로써 제품의 미려한 외관과 아울러 친환경적인 요소를 모두 만족시키면서도 제조원가는 절감시킬 수 있게 된다.As described above, the skin material 10 of the vehicle interior parts according to the present invention is the surface directly related to the appearance of the product is made of the TPO layer (10a) and the back surface is composed of a resin layer (10b) of a lower material In addition to the beautiful appearance and eco-friendly elements, all manufacturing costs can be reduced.

이에 따라 중, 저급차종에도 그 적용이 가능하여 차량의 감성품질을 높일 수 있게 된다.  Accordingly, it can be applied to the middle and low-end models, thereby improving the emotional quality of the vehicle.

또한, 우레탄폼재(30)와 접착되는 표피재(10)의 이면이 수지층(10b)으로 이루어져 둘 사이의 접착력이 양호하여 발포전에 별도의 이면처리공정을 거칠 필요가 없게 된다.In addition, the back surface of the skin material 10 to be bonded to the urethane foam material 30 is made of a resin layer (10b), the adhesion between the two is good, there is no need to go through a separate back surface treatment process before foaming.

상기한 바와 같이 본 발명에 따른 차량용 내장부품의 표피재 성형방법에 의하면, 표피재가 TPO층과 수지층의 이중구조로 이루어짐으로써 제품의 미려한 외관 및 친환경적인 요소는 만족시키면서 그 제조원가를 절감시킬 수 있고, 이로 인해 중, 저급차종에도 적용이 가능하여 감성품질을 향상시킴과 아울러 그 성형시 별도의 이면처리공정을 삭제할 수 있는 효과가 있다.As described above, according to the method for forming the skin material of the vehicle interior part according to the present invention, the skin material is made of a dual structure of the TPO layer and the resin layer, thereby reducing the manufacturing cost while satisfying the beautiful appearance and eco-friendly elements of the product. Because of this, it is possible to apply to the middle and low grade cars to improve the quality of the emotion as well as the effect of eliminating the separate back treatment process during the molding.

Claims (2)

TPO와 첨가제가 혼합된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판 형태로 가공하는 TPO시트 캘린더공정;TPO sheet calendering step of processing the raw material mixed with the TPO and additives in sequence between the calender roller in the form of a thin plate; 저급 PVC 또는 저급 ABS 중 어느 하나와 첨가제가 혼합된 원료를 캘린더롤러 사이에 차례로 통과시켜 박판형태로 가공하는 수지시트 캘린더공정;Resin sheet calendering process of passing the raw material mixed with any one of the lower PVC or lower ABS and additives in turn between the calender rollers and processing in a thin plate form; 상기 TPO시트와 수지시트 중 적어도 어느 한쪽의 접합면에 프라이머를 처리하여 둘 사이의 접착력이 향상될 수 있도록 하는 프라이머 처리공정;A primer treatment step of treating the bonding surface of at least one of the TPO sheet and the resin sheet to improve adhesion between the two; 상기 프라이머 처리공정을 거친 TPO시트와 수지시트를 압착롤러 사이로 통과시켜 압착하면서 상호 접착시키는 압착공정;A pressing step of passing the TPO sheet and the resin sheet which have been subjected to the primer treatment between the pressing rollers, and bonding them to each other while pressing them; 상기 압착공정에서 배출된 제품을 엠보롤러 사이로 통과시켜 성형시키는 엠보공정;An embossing step of molding the product discharged from the pressing step through the embossing roller; 상기 엠보공정에서 배출된 제품에 코로나 방전처리를 가하는 코로나 처리공정; 및A corona treatment step of applying a corona discharge treatment to the product discharged from the embossing process; And 상기 코로나 처리공정에서 배출된 제품의 표면에 표면전처리제 및 표면처리제를 사용하여 표면처리를 실시하는 표면 스프레이공정을 포함하는 것을 특징으로 하는 차량용 내장부품의 표피재 성형방법.And a surface spray process for performing a surface treatment using a surface pretreatment agent and a surface treatment agent on the surface of the product discharged from the corona treatment process. 삭제delete
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