KR20050076364A - Interior materials panel and manufacturing method thereof - Google Patents
Interior materials panel and manufacturing method thereof Download PDFInfo
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- KR20050076364A KR20050076364A KR1020040004320A KR20040004320A KR20050076364A KR 20050076364 A KR20050076364 A KR 20050076364A KR 1020040004320 A KR1020040004320 A KR 1020040004320A KR 20040004320 A KR20040004320 A KR 20040004320A KR 20050076364 A KR20050076364 A KR 20050076364A
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- panel
- polypropylene
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- extruded
- interior panel
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- 239000000463 material Substances 0.000 title claims abstract description 78
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- -1 polypropylene Polymers 0.000 claims abstract description 45
- 239000004743 Polypropylene Substances 0.000 claims abstract description 42
- 229920001155 polypropylene Polymers 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000008018 melting Effects 0.000 claims abstract description 9
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims abstract description 4
- 238000004049 embossing Methods 0.000 claims description 4
- 229920006379 extruded polypropylene Polymers 0.000 claims description 2
- 238000009413 insulation Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- 239000012815 thermoplastic material Substances 0.000 abstract description 4
- 231100000331 toxic Toxicity 0.000 abstract description 4
- 230000002588 toxic effect Effects 0.000 abstract description 4
- 239000002341 toxic gas Substances 0.000 abstract description 4
- 239000006260 foam Substances 0.000 description 9
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001125 extrusion Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 229920002522 Wood fibre Polymers 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000011162 core material Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000088 plastic resin Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002025 wood fiber Substances 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 231100000481 chemical toxicant Toxicity 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003562 lightweight material Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
- 238000003856 thermoforming Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 238000009757 thermoplastic moulding Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- B32B27/065—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 foam
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- 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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling 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
- 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
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/06—Embossing
-
- 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
- B32B5/18—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 features of a layer of foamed material
-
- 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
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
-
- 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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
-
- 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
- B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
- B32B2309/02—Temperature
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
본 발명은 자동차용 인스트루먼트패널이나 대시보드패널, 도어트림패널 등에 사용되는 내장재 패널로서, 보드 형태를 갖는 발포폴리프로필렌 중간재(2)와; 상기 중간재(2) 양면으로 부착되며 각각 압출 또는 발포압출된 한 쌍의 폴리프로필렌 표피재(4a,4b)로 이루어진 내장재 패널을 제공한다. 또한 본 발명은 이의 제조방법으로서 보드 형태의 발포폴리프로필렌 중간재(2) 양면에 각각 170 내지 230℃의 직화연소열을 가하여 표면을 부분 용융시키는 단계와; 상기 표면이 부분 용융된 중간재(2) 양면으로 각각 압출 또는 발포압출된 한 쌍의 폴리프로필렌 표피재(4a,4b)를 개재한 후 가압 합착하여 부착시키는 단계를 제공하는 바, 내열성이 큰 동일계열의 열가소성 물질인 발포폴리프로필렌과 폴리프로필렌을 사용하므로 경량화는 물론 방음 및 단열기능을 향상시키고, 고온공정에서의 유독가스 방출을 억제하며 이들의 접착 시 유독성 본드를 사용하지 않아 친환경적인 작업공간을 제공한다.The present invention is a panel for interior materials used in automotive instrument panels, dashboard panels, door trim panels and the like, foamed polypropylene intermediate material (2) having a board form; Provided is an interior panel consisting of a pair of polypropylene skin materials 4a and 4b extruded or foam-extruded, respectively, attached to both sides of the intermediate material 2. In addition, the present invention is a method for producing a step of partially melting the surface by applying a direct combustion heat of 170 to 230 ° C on both sides of the foamed polypropylene intermediate (2) in the form of a board; Providing a step of attaching the surface of the partially melted intermediate material (2) extruded or foam-extruded to a pair of polypropylene skin materials (4a, 4b), respectively, and pressing and bonding them to each other. Foamed polypropylene and polypropylene, which are thermoplastic materials, make it lighter, improve sound insulation and insulation, suppress emission of toxic gases in high temperature processes, and provide eco-friendly working space by not using toxic bonds when bonding them. do.
Description
본 발명은 자동차 등에 사용 가능한 내장재 패널 및 이의 제조방법에 관한 것으로, 좀더 자세하게는 보드 형태의 발포폴리프로필렌(expended polypropylene : EPP) 중간재 양면으로 각각 한 쌍의 폴리프로필렌(polypropylene : PP) 표피재가 부착된 내장재 패널 및 이의 제조방법에 관한 것이다.The present invention relates to an interior panel usable for automobiles and the like, and more particularly, a pair of polypropylene (PP) skins attached to both sides of an expanded polypropylene (EPP) intermediate material in the form of a board. It relates to an interior panel and a method of manufacturing the same.
일반적으로 자동차의 인스트루먼트패널(instrument panel)이나 대시보드패널(dashboard panel), 도어트림패널(door trim panel) 등의 내장재 패널은 빛을 난 반사 시켜 운전에 편의를 제공함과 동시에 방음 및 단열의 기능을 수행한다.In general, interior panels such as the instrument panel, dashboard panel, and door trim panel of automobiles reflect light and provide convenience for driving while providing sound insulation and insulation functions. Perform.
이러한 내장재 패널은 경질의 중간재 및 이의 양면으로 부착된 한 쌍의 표피재로 구성되는데, 이중 중간재로는 통상 보드(board) 형태의 폴리프로필렌(polypropylene), 폴리에틸렌(polyethylene), 에이비에스(ABS), 우드화이버(wood fiber), 우드스톡(wood stock), 레진펠트(resin felt) 등이 사용된다. 그리고 이의 양면으로 부착된 한 쌍의 표피재로는 시트(sheet) 형태의 폴리비닐클로라이드(polyvinylchloride : PVC), 폴리에틸렌 폼(polyethylene form), 부직포 등이 사용된다.Such interior panels consist of a hard intermediate material and a pair of skins attached to both sides thereof, of which intermediate boards are usually made of board-like polypropylene, polyethylene, ABS, Wood fiber, wood stock, resin felt and the like are used. And a pair of the skin material attached to both sides thereof is used in the form of a sheet (polyvinylchloride: PVC), polyethylene foam (polyethylene form), non-woven fabrics.
또한 종래의 내장재 패널을 제조하기 위해서는 중간재 재질의 판체를 구비하여 상하부 성형금형 사이에 삽입한 후 가압함으로서 보드 형태의 중간재를 제조하고, 이어서 이의 외면에 본드 등의 접착재를 스프레이 한 후 각각 표피재를 부착시켜 완성한다.In addition, in order to manufacture a conventional interior panel, a board member having an intermediate material is inserted and inserted between upper and lower molding dies, and then pressurized to produce a board-shaped intermediate material, and then, after spraying an adhesive such as a bond on the outer surface thereof, each of the skin material is coated. Attach and complete.
그러나 종래의 내장재 패널 제조공정에는 서로 다른 이질재료의 중간재와 표피재의 긴밀한 부착을 위하여 톨루엔(toluene)과 같이 유독성 화학물질이 함유된 본드를 중간재 양면으로 스프레이 하므로 이 과정에서 작업자의 건강을 해치는 단점이 있고, 특히 중간재로서 레진펠트나 우드화이버 등과 같이 페놀수지의 바인더(binder)가 함유된 열경화성 수지가 사용할 경우 고온공정에 의한 유독가스의 방출로 인해 환경오염의 원인이 되며 작업자가 유해한 작업환경에 놓이는 문제점이 있다.However, in the conventional interior panel manufacturing process, a bond containing toxic chemicals, such as toluene, is sprayed on both sides of the intermediate material in order to closely adhere the intermediate material and the skin material of different foreign materials. In particular, when a thermosetting resin containing a binder of a phenol resin such as resin felt or wood fiber is used as an intermediate material, it causes environmental pollution due to the release of toxic gas by high temperature process and puts workers in a harmful working environment. There is a problem.
마찬가지로 중간재와 표피재로서 서로 다른 이질재료가 사용됨에 따라 내장재 패널의 폐기 시에는 각각을 분리해 낸 후 재활용하고 있는 실정인 바, 비용적인 지출이 큰 단점이 있다.Similarly, as different materials are used as intermediate materials and skin materials, when the interior panels are disposed of, each of them is separated and recycled.
한편, 최근 자동차 등의 개발에 있어서 구성요소가 가급적 경량화되는 추세에 있는데, 종래의 내장재 패널은 무거운 반면 방음 및 단열의 기능이 충분치 않아 보다 개선된 내장재 패널이 시급하게 요구되고 있는 실정이다.On the other hand, in the development of automobiles, etc., there is a tendency to lighten the components as much as possible, the conventional interior panels are heavy, but the soundproofing and heat insulation function is insufficient enough that there is an urgent need for improved interior panels.
이에 본 발명은 상기와 같은 문제점을 해결하게 위해 안출한 것으로, 내열성이 큰 동일계열의 열가소성 물질로 이루어진 중간재와 표피재로 구성됨과 동시에 이들의 접착시에 본드 등의 유독성 접착물질을 사용하지 않는 내장재 패널 및 이의 제조방법을 제공하는데 목적이 있다.Accordingly, the present invention has been made in order to solve the above problems, it is composed of an intermediate material and a skin material made of the same series of thermoplastic material having a high heat resistance and at the same time does not use a toxic adhesive material such as a bond when bonding It is an object to provide a panel and a method of manufacturing the same.
또한 이를 통해서 고온공정에서 발생되는 유독가스 방출을 억제함은 물론 본드 등의 유독성 접착재를 사용하지 않아 작업자의 건강을 해치지 않는 쾌적한 작업환경을 조성할 수 있고, 더불어 보다 경량화되면서도 방음 및 단열 기능이 강화되고 특히 재활용에 용이한 내장재 패널을 제공하는데 그 목적이 있다. In addition, it not only suppresses the emission of toxic gases generated in high temperature processes, but also creates a pleasant working environment that does not harm the health of workers by not using toxic adhesives such as bonds. It is an object of the present invention to provide an interior panel that is easy to recycle and particularly easy to recycle.
이에 본 발명은 상기와 같은 목적을 달성하기 위하여 자동차의 인스트루먼트패널이나 대시보드패널, 도어트림패널 등에 사용되는 내장재 패널로서, 보드 형태를 갖는 발포폴리프로필렌 중간재와; 상기 중간재 양면으로 부착되며 각각 압출 또는 발포압출된 한 쌍의 폴리프로필렌 표피재를 포함하는 것을 특징으로 하는 내장재 패널을 제공한다. 이때 상기 표피재는 각각 상기 중간재 양면으로 170 내지 230℃의 직화연소열을 가하여 표면을 부분 용융시킨 후 가압 합착되는 것을 특징으로 한다.In order to achieve the above object, the present invention provides an interior panel used for an instrument panel, a dashboard panel, a door trim panel, etc. of an automobile, and includes a foamed polypropylene intermediate having a board shape; The interior panel is attached to both sides of the intermediate material and provides an interior panel comprising a pair of extruded or foam-extruded polypropylene skin material. At this time, the skin material is characterized in that the pressurized bonding after partially melting the surface by applying direct combustion heat of 170 to 230 ℃ to both sides of the intermediate material.
그리고 상기 내장재 패널은 열가공에 의해 소정형상으로 성형됨과 동시에 상기 적어도 하나의 표피재 외면이 엠보싱 처리된 것을 특징으로 한다.In addition, the interior panel is molded into a predetermined shape by thermal processing, and at least one outer surface of the skin material is embossed.
또한 본 발명은 자동차의 인스트루먼트패널이나 대시보드패널, 도어트림패널 등에 사용되는 내장재 패널의 제조방법으로서, 보드 형태의 발포폴리프로필렌 중간재를 구비한 후 이의 양면에 각각 170 내지 230℃의 직화 연소열을 가하여 표면을 부분 용융시키는 단계와; 상기 표면이 부분 용융된 중간재 양면으로 각각 압출성형 또는 발포압출성형된 한 쌍의 폴리프로필렌 표피재를 개재한 후 가압 합착하여 부착시키는 단계를 포함하는 것을 특징으로 하는 내장재 패널의 제조방법을 제공한다.In addition, the present invention is a manufacturing method of the interior panel used in the instrument panel, dashboard panel, door trim panel, etc. of the vehicle, and equipped with a foamed polypropylene intermediate material in the form of a board, by applying direct combustion heat of 170 to 230 ℃ on each side thereof Partially melting the surface; It provides a method for producing an interior panel comprising the step of attaching by pressing and bonding through a pair of polypropylene skin extruded or foam extrusion molded respectively on both surfaces of the partially melted intermediate material.
이때 상기 중간재 양면으로 각각 한 쌍의 표피재를 부착시키는 단계 이후, 상기 내장재 패널을 열가공하여 소정 형상으로 성형함과 동시에 상기 적어도 하나의 표피재 외면을 엠보싱 처리하는 단계를 더욱 포함하는 것을 특징으로 하며, 상기 내장재 패널을 열가공하는 단계는 상기 내장재 패널을 가열한 후 소정 형상의 상하부 몰드프레임 사이로 삽입하여 가압하면서 냉각시키는 것을 특징으로 한다.At this time, after attaching a pair of skin material on both sides of the intermediate material, further comprising the step of embossing the outer surface of the at least one skin material while simultaneously molding the interior panel by a predetermined shape by heat processing. The heating of the interior panel may include inserting between the upper and lower mold frames having a predetermined shape and then cooling the interior panel after heating.
이하 첨부된 도면을 참조하여 본 발명을 보다 상세하게 설명한다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 내장재 패널의 단면도로서, 보드 형태의 중간재(2) 양면으로 각각 필름 형태의 표피재(4a,4b)가 부착되어 있음은 일반적인 경우와 기술적 내용을 같이한다. 1 is a cross-sectional view of the interior panel according to the present invention, the film-like skin material (4a, 4b) is attached to both sides of the board-shaped intermediate material (2), the same as in the general case.
그러나 재질에 있어서 일반적인 경우와 상이한데, 본 발명에서는 중간재(2)와 한 쌍의 표피재(4a,4b)를 각각 동일 계열의 폴리프로필렌으로 구성하되 중간재(2)는 발포폴리프로필렌 재질로 이루어지고, 이의 양면을 부착된 한 쌍의 표피재(4a,4b)는 각각 폴리프로필렌으로 이루어져 있는 것을 특징으로 한다. However, the material is different from the general case, in the present invention, the intermediate material (2) and the pair of skin materials (4a, 4b) are each composed of the same series of polypropylene, the intermediate material (2) is made of a foamed polypropylene material , A pair of skin materials (4a, 4b) attached to both sides thereof is characterized in that each made of polypropylene.
그리고 한 상의 표피재(4a,4b)는 각각 폴리프로필렌을 압출 또는 발포 압출시켜 제조된 것을 특징으로 한다. And one of the skin material (4a, 4b) is characterized in that produced by extrusion or foam extrusion of polypropylene, respectively.
통상 폴리프로필렌은 프로필렌의 중합체로서 석유화학공장 등에서 나프타를 분해할 경우 에틸렌과 함께 생성되는 물질로 알려져 있다. Generally, polypropylene is a polymer of propylene, and is known as a material produced with ethylene when decomposing naphtha in a petrochemical plant or the like.
이러한 폴리프로필렌은 아이소택틱(isotactic) 구조를 가지며 메틸기(基)가 같은 방향으로 정연하게 배열되어 있는 바, 구체적으로는 녹는점이 165℃이고, 하중(荷重)하에서 연속사용이 110℃에서 가능한 열 가소성수지로서 밀도는 0.9∼0.91이며, 결정도(結晶度)는 크지만 성형한 후에는 70% 이하로 저하되는 특징이 있다.The polypropylene has an isotactic structure and methyl groups are arranged in the same direction. Specifically, the polypropylene has a melting point of 165 ° C. and is capable of continuous use at 110 ° C. under a load. As a plastic resin, the density is in the range of 0.9 to 0.91, and the crystallinity is large, but after molding, the plastic resin is reduced to 70% or less.
또한 폴리프로필렌은 전기적 성질이 우수하며 내열성이 강하여 포장용 필름, 연신(延伸) 테이프, 섬유, 파이프, 일용잡화, 완구, 공업용 부품, 컨테이너 등에 널리 사용되는 바, 특히 본 발명에 따른 내장재 패널의 중간재(2)로 활용되는 발포폴리프로필렌은 상술한 폴리프로필렌을 물리적으로 발포시킴으로서 구(球)형태의 비드(bead) 입자가 다량 함유되도록 한 것이다.In addition, polypropylene has excellent electrical properties and heat resistance, and thus is widely used in packaging films, stretched tapes, fibers, pipes, daily necessities, toys, industrial parts, containers, and the like. Foamed polypropylene used in 2) is to physically foam the above-described polypropylene so that a large amount of beads in the form of beads are contained.
이러한 발포폴리프로필렌은 비드 입자의 발포 배율에 따라 5배, 8배, 10배, 15배, 30배, 45배 및 60배 등으로 나뉘어질 수 있지만 본 발명에서는 목적에 따라 적절한 발포배율이 선택될 수 있고, 우수한 내유 및 내화성과 내열성을 지니며 온도변화에 따른 열팽창율이 적어 안정된 규격을 유지할 수 있고 내구성과 완충성이 뛰어난 경량재로 알려져 있다. Such expanded polypropylene may be divided into 5 times, 8 times, 10 times, 15 times, 30 times, 45 times, and 60 times according to the expansion ratio of the bead particles, but in the present invention, an appropriate expansion ratio may be selected according to the purpose. It is known to be a lightweight material having excellent oil and fire resistance and heat resistance, low thermal expansion rate due to temperature change, maintaining a stable specification, and excellent durability and buffering property.
또한 이의 표면은 반경질 상태를 유지하여 적절한 강도와 유연성 및 탄성을 보유하고, 칼이나 슬라이서(slicer) 또는 손톱(handsaw) 및 열선 등으로 쉽게 가공할 수 있고 접착, 열융착, 프레스 등을 사용하기에도 수월한 장점이 있다. In addition, its surface is semi-rigid to maintain proper strength, flexibility and elasticity, and can be easily processed with a knife, slicer, nail, hot wire, etc. There is also an easy advantage.
더불어 재생 및 분쇄 후 원료의 재사용 등과 같은 재활용 처리가 용이하여 무독성인 장점과 더불어 압출폴리에테르나 스티로폼 또는 우레탄폼 등의 타 재료에 비하여 가격이 저렴한 특징을 보유하는 바, 이와 같이 여러 가지 우수한 성질을 지닌 발포폴리프로필렌으로 본 발명에 따른 내장재 판넬의 중심재(2)를 제조하는 것이다.In addition, it is easy to recycle such as reuse of raw materials after regeneration and pulverization, so it has non-toxic advantages and lower cost than other materials such as extruded polyether, styrofoam or urethane foam. With the expanded polypropylene having a core material (2) of the interior panel according to the invention.
따라서 강도가 크면서도 내부로 다수의 비드가 포함된 발포체이므로 가볍고 단열 및 방음성이 크게 향상된 특성을 얻을 수 있다.Therefore, since the foam has a large strength and a large number of beads therein, it is possible to obtain the characteristics of light weight and greatly improved insulation and sound insulation.
다음으로 이의 표면에 부착된 한 쌍의 폴리프로필렌 표피재(4a,4b)는 각각 상술한 폴리프로필렌을 압출 또는 발포 압출시켜 시트 형태로 제조된 것을 특징으로 하는 데, 압출이라 함은 통상의 경우와 마찬가지로 소정의 압출기에 폴리프로필렌을 투입하여 가열 용융시킨 후 압력을 가해 슬릿형태의 토출구를 통해 외부로 밀어냄에 따라 시트 형상으로 성형하는 방법이 사용될 수 있다.Next, the pair of polypropylene skin materials 4a and 4b attached to the surface thereof is characterized in that the above-described polypropylene is produced in the form of a sheet by extruding or foam-extruding the above-described polypropylene. Likewise, a method of molding into a sheet shape may be used as the polypropylene is introduced into a predetermined extruder, heated and melted, and then pushed to the outside through a slit-shaped outlet.
또한 발포압출의 경우 역시 이와 유사하게 압출기를 사용할 수 있지만 원료물질에 발포재 및 적절한 첨가재를 첨가함으로서 내부로 다수의 비드입자를 형성시킨 것이다.In addition, in the case of foam extrusion, an extruder can be similarly used, but a plurality of bead particles are formed therein by adding a foam material and an appropriate additive to the raw material.
따라서 앞서 언급한 바와 같이 본 발명에 따른 내장재 패널의 가장 큰 특징은 동일 계열의 열가소성 물질인 폴리프로필렌으로 중간재(2)와 표피재(4a,4b)를 각각 제조하되 경량성과 방음 및 단열성을 향상시키기 위하여 중심재(2)로서 발포폴리프로필렌을 사용하는 것이다. Therefore, as mentioned above, the biggest feature of the interior panel according to the present invention is to produce the intermediate material (2) and the skin material (4a, 4b) from the polypropylene of the same series, respectively, to improve the light weight, sound insulation and insulation For this purpose, the expanded polypropylene is used as the center material (2).
더불어 표피재(4a,4b)로 동일 계열의 물질을 선택함에 따라 후술하는 바와 같이 본드 등과 같이 별도의 접착재를 사용하지 않고도 긴밀하게 부착시킬 수 있는 것을 특징으로 하는데, 간단하게는 중간재(2)의 양면으로 각각 고온의 열을 가하여 표면을 일부 용융시킨 후 각각에 표피재(4a,4b)를 가압 합착하여 부착시킨다.In addition, by selecting the material of the same series as the skin material (4a, 4b) is characterized in that it can be closely attached without using a separate adhesive, such as a bond, as will be described later, After the surface is partially melted by applying high temperature heat to both surfaces, the skin materials 4a and 4b are attached to each other by pressure bonding.
첨부된 도 2는 본 발명에 따른 내장재 패널의 제조공정을 순서대로 나타낸 순서도이고, 도 3a 내지 도 3c는 각각 본 발명에 다른 내장재 패널의 제조공정을 알기 쉽게 나타낸 공정도로서, 앞서의 도 1과 함께 참조하여 본 발명에 따른 내장재 패널 및 이의 제조방법을 보다 상세하게 설명한다.2 is a flowchart showing a manufacturing process of the interior panel according to the present invention in sequence, Figures 3a to 3c is a process diagram showing the manufacturing process of the interior panel according to the present invention, respectively, in conjunction with FIG. With reference to the interior panel according to the present invention and its manufacturing method will be described in more detail.
먼저 본 발명에 따른 내장재 패널을 제조하기 위하여 도 3a에 나타낸 바와 같이 보드 형태의 발포폴리프로필렌 중간재(2)를 구비하는 바, 이에 대한 물성과 제조방법은 앞서 자세히 언급한 바 있다.(st1)First, in order to manufacture the interior panel according to the present invention, as shown in FIG. 3A, a foamed polypropylene intermediate member 2 having a board shape is provided. The physical properties and manufacturing method thereof have been described above in detail. (St1)
다음으로 도3b와 같이 중간재(2) 양면에 고온의 열을 가하여 표면을 일부 용융시키는데, 이때 가하는 고온의 열은 LPG 등의 가스를 연소시킨 직화연소열(20)이 될 수 있고, 특히 그 온도범위는 170 내지 230℃ 이내로서 바람직하게는 200 ℃ 정도가 될 수 있다.(st2)Next, as shown in FIG. 3b, a part of the surface is melted by applying high temperature heat to both surfaces of the intermediate material 2, in which case the high temperature heat may be direct combustion heat 20 combusting a gas such as LPG, in particular, the temperature range thereof. Is within 170 to 230 ° C., preferably about 200 ° C. (st2)
이 경우 폴리프로필렌의 녹는점이 165℃ 임을 감안하면 170℃ 이하일 경우에는 용융이 어렵고, 230℃ 이상일 경우에는 불필요하게 중심재(2) 내부까지 용융되거나 자칫 탄화되는 현상이 나타날 수 있다. In this case, considering that the melting point of the polypropylene is 165 ° C, melting may be difficult when the temperature is 170 ° C. or lower, and when the temperature is 230 ° C. or higher, unnecessarily melting or carbonization may occur.
이어서 표면이 일부 용융된 중간재(2) 양면으로 각각 폴리프로필렌 표피재(4a,4b)를 덮은 후 가압 합착시키는데, 이들은 서로 동일한 폴리프로필렌 재질이므로 서로 접촉된 계면 일부가 용융된 후 냉각되면서 서로 긴밀하게 부착 및 고정될 수 있다.(st3)Then, the surfaces cover the polypropylene skin materials 4a and 4b on both sides of the partially melted intermediate material 2, respectively, and are press-bonded. Since they are the same polypropylene material, the parts in contact with each other are melted and cooled, and then closely bonded to each other. Can be attached and fixed (st3)
이와 같은 표피재(4a,4b)의 부착을 위해서 도시된 바와 같은 가압롤러(22a,22b)가 사용될 수 있는데, 중심재(2)의 양면으로 각각 직화연소열(20)을 가하면서 양면으로 덮어지는 표피재(4a,4b)를 사이에 두고 회전하여 가압하는 한 쌍의 가압롤러(22a,22b)를 이용하여 간단하고 긴밀하게 서로를 부착시킬 수 있다.Press rollers 22a and 22b as shown for the attachment of such skin materials 4a and 4b can be used, which are covered on both sides while direct combustion heat 20 is applied to both sides of the center material 2, respectively. The pair of pressure rollers 22a and 22b which rotate and pressurize with the skin materials 4a and 4b interposed therebetween can be attached simply and intimately.
상술한 과정을 거쳐서 본 발명에 따른 내장재 패널이 완성되는데, 이를 자동차의 인스트루먼트패널, 대시보드패널, 도어트림패널 등으로 사용하기 위해서는 소정의 형상으로 성형함과 동시에 외부로 노출된 표피재 외면에 엠보싱 처리를 하여 빛을 난반사 시키도록 해야 한다.Through the above process, the interior panel according to the present invention is completed. In order to use it as an instrument panel, a dashboard panel, a door trim panel, etc. of an automobile, it is molded into a predetermined shape and simultaneously embossed on the outer surface of the skin exposed to the outside. It must be treated to diffuse the light.
이를 위해 열가공(thermoforming) 방법이 사용될 수 있는바, 이는 열가소성의 피성형물을 가열하면 연화되고 냉각시키면 고화되는 특성을 이용한 것이다.For this purpose, a thermoforming method can be used, which utilizes a property of softening when heating the thermoplastic molding and solidifying when cooling.
이에 도 3c에 나타낸 바와 같이 동일계열의 열가소성의 발포 및 폴리프로필렌으로 이루어진 본 발명에 따른 내장재 패널을 가열하여 연화한 후 소정의 형상을 가지는 상하부 몰드프레임(24a,24b) 사이로 삽입하고, 이어서 상하부 몰드프레임(24a,24b)을 서로 마주보는 방향으로 승강시켜 가압함으로서 부형한 뒤 냉각시켜 그 형태를 고정시킬 수 있다.(st4,st5)Accordingly, as shown in FIG. 3C, the interior panel made of thermoplastic foam and polypropylene of the same series is heated and softened, and then inserted between the upper and lower mold frames 24a and 24b having a predetermined shape, and then the upper and lower molds. The frame 24a, 24b can be raised by lifting in a direction facing each other to press the mold and cooled to fix the shape. (St4, st5)
이때 상하부 몰드프레임(24a,24b) 중 어느 하나의 가압면에는 목적하는 형상의 요철(26)이 형성될 수 있고, 이와 접촉되는 본 발명에 따른 내장재 패널의 표피재(4a,4b) 중 외부로 노출되는 어느 하나의 표면에 엠보싱(5)이 부여될 수 있다.At this time, the pressing surface of any one of the upper and lower mold frame (24a, 24b) may be formed of the irregularities 26 of the desired shape, the outer surface of the skin material (4a, 4b) of the interior panel in accordance with the present invention in contact with Embossing 5 may be imparted to either surface to be exposed.
따라서 상기한 과정을 통해서 본 발명에 따른 냉각재 패널로 이루어진 자동차의 인스트루먼트패널이나 대시보드패널, 도어트림패널을 완성할 수 있다.Therefore, through the above process it is possible to complete the instrument panel, dashboard panel, door trim panel of the vehicle made of the coolant panel according to the present invention.
이상에서 설명한 본 발명에 따른 내장재 패널은 이하의 여러 가지 효과를 얻을 수 있다.The interior panel according to the present invention described above can obtain the following various effects.
첫째로, 동일계열의 열가소성 물질의 중간재와 표피재를 사용함과 동시에 중간재의 표면을 일부 용융시켜 표피재를 가압 합착하여 부착시키는 방법을 제공하는 바, 본드 등의 별도의 유독성 있는 접착물질이 불필요하여 제조과정이 안전하고 간편한 잇점이 있다.First, it provides a method of using the same intermediate thermoplastic material and the skin material and at the same time melting the surface of the intermediate material to attach the skin material by pressure bonding, so that no separate toxic adhesive such as bond is required. The manufacturing process is safe and easy.
둘째로, 동일계열의 열가소성 물질로서 특히 내열성이 큰 폴리프로필렌을 사용하므로 고온공정에서의 유독가스 방출 등의 부작용을 억제할 수 있고, 우수한 전기적 절연특성과 우수한 내유 및 내화성과 더불어 온도변화에 따른 열팽창율이 적어 안정된 규격을 유지할 수 있는 장점이 있다. 또한 내구성과 완충성이 뛰어난 효과가 있다.Second, since polypropylene of the same series is used, especially high heat resistance polypropylene, it is possible to suppress side effects such as emission of toxic gases in high temperature process, and thermal expansion due to temperature change along with excellent electrical insulation properties and excellent oil and fire resistance. Low rate has the advantage of maintaining a stable specification. It also has excellent durability and cushioning effect.
셋째로, 중심재의 재질로서 발포폴리프로필렌을 사용하므로 보다 가벼우면서도 방음 및 단열효과를 높일 수 있다.Third, because the polypropylene foam is used as the material of the core material, it is possible to increase the sound insulation and heat insulation effect while being lighter.
넷째로, 열가소성 물질만을 이용하므로 인스트루먼트패널이나 대시보드패널, 도어트림패널 등과 같이 구체적인 제품화를 위한 부형공정이 열가공으로 간단하게 진행할 수 있고, 따라서 제조비용을 절감하는 효과를 아울러 가지고 있다.Fourthly, since only the thermoplastic material is used, an extrusion process for specific product such as an instrument panel, a dashboard panel, a door trim panel, and the like can be easily performed by heat processing, thus reducing the manufacturing cost.
이에 본 발명은 보다 개선된 특성의 내장재 패널을 제공함과 동시에 이의 제조공정 또한 작업자의 건강을 해치지 않는 친환경적으로 조성할 수 있는 효과가 있다.Accordingly, the present invention provides an interior panel with more improved properties, and at the same time, its manufacturing process also has the effect of being environmentally friendly without compromising the health of the worker.
도 1은 본 발명에 따른 내장재 패널의 단면도.1 is a cross-sectional view of the interior panel according to the invention.
도 2는 본 발명에 따른 내장재 패널의 공정순서도.2 is a process flowchart of the interior panel according to the present invention.
도 3a 내지 도 3d는 각각 본 발명에 따른 내장재 패널의 제조공정도.Figure 3a to 3d is a manufacturing process of the interior panel according to the present invention, respectively.
<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>
2 : 중간재 4a,4b : 표피재2: intermediate material 4a, 4b: skin material
5 : 엠보싱 20 : 직화연소열5: embossing 20: direct combustion heat
22a,22b : 가압롤러 24a,24b : 상하부 몰드프레임22a, 22b: pressure roller 24a, 24b: upper and lower mold frame
26 : 요철26: unevenness
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100755642B1 (en) * | 2006-03-15 | 2007-09-04 | 정국노 | Recycling method for foaming sheet and its device |
KR101304940B1 (en) * | 2011-09-05 | 2013-09-06 | 한화엘앤씨 주식회사 | Multi tone sheet for car interior material |
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2004
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100755642B1 (en) * | 2006-03-15 | 2007-09-04 | 정국노 | Recycling method for foaming sheet and its device |
KR101304940B1 (en) * | 2011-09-05 | 2013-09-06 | 한화엘앤씨 주식회사 | Multi tone sheet for car interior material |
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