KR19980060012U - Car ceiling - Google Patents
Car ceiling Download PDFInfo
- Publication number
- KR19980060012U KR19980060012U KR2019970004019U KR19970004019U KR19980060012U KR 19980060012 U KR19980060012 U KR 19980060012U KR 2019970004019 U KR2019970004019 U KR 2019970004019U KR 19970004019 U KR19970004019 U KR 19970004019U KR 19980060012 U KR19980060012 U KR 19980060012U
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- polyolefin
- foam
- present
- sheet
- laminating
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Classifications
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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
- 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
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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
- B32B27/06—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
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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
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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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
- 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
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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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
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/025—Polyolefin
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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
- B32B2605/00—Vehicles
- B32B2605/08—Cars
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
- Laminated Bodies (AREA)
Abstract
폴리올레핀계 가교발포체(1)의 상하면에 폴리올레핀계 시트(2, 2)를 적층하여 구성된 3층 적층체로 이루어지는 자동차 천정재에 관한 것이다. 본 고안의 자동차 천정재는, 자동차 내부의 흡음성과 외관을 개선하기 위해서 부직포나 클로쓰 등의 표피재(3)를 더 한층 적층하여 구성된 4층의 적층체로 구성될 수도 있다. 본 고안의 자동차 천정재는 폴리올레핀 수지를 주성분으로 하는 PO시트(2, 2) 및 PO발포체(1)를 이용하므로, 가열치수변화율이 비슷하다. 따라서, 접착제를 사용하여 라미네이트 할 필요가 없이 가열하여 적층하는 열 라미네이트 공법으로 제조할 수 있다. 따라서, 제조공정이 간단하며 비용이 절약된다. 또한, 같은 재질의 재료를 사용하므로, 재활용이 용이하다.The present invention relates to a vehicle ceiling comprising a three-layer laminate formed by laminating polyolefin-based sheets 2 and 2 on the upper and lower surfaces of the polyolefin-based crosslinked foamed body 1. The automotive ceiling material of the present invention may be composed of a four-layer laminate formed by further laminating a skin material 3 such as a nonwoven fabric or a cloth in order to improve sound absorption and appearance inside an automobile. The automotive ceiling material of the present invention uses PO sheets (2, 2) and PO foams (1) containing polyolefin resin as a main component, and thus the heating dimension change rate is similar. Therefore, it can be manufactured by the thermal lamination method of heating and laminating | stacking without needing to laminate using an adhesive agent. Therefore, the manufacturing process is simple and the cost is saved. In addition, since materials of the same material are used, recycling is easy.
Description
본 고안은 자동차의 천정부위에 부착되는 자동차 천정재에 관한 것이며, 특히 폴리올레핀(PO)계 수지를 주성분으로 하는 폴리올레핀계 시트와 폴리올레핀계 발포체를 라미네이트한 적층체를 이용함으로써 성형성이 우수한 자동차 천정재에 관한 것이다.The present invention relates to a vehicle ceiling material adhered to a ceiling of an automobile, and in particular to a vehicle ceiling material having excellent moldability by using a laminate comprising a polyolefin sheet containing polyolefin (PO) resin and a polyolefin foam. It is about.
종래의 자동차 천정재로는 도 3에 도시된 바와같이, 우드 스톡(wood stock), 글라스 울(glass wool)에 폴리프로필렌(PP) 함침 복합재로 이루어진 기재(4)와, 폴리올레핀계 발포체(1)와, PVC시트 또는 클로쓰나 부직포 등과 같은 표피재(3)를 적층하여 형성된 3층의 적층시트를 사용하였다. 그런데, 종래의 자동차 천정재의 경우, 기재(4)로 사용되는 우드 스톡 또는 글라스 울의 PP함침 복합재와, 폴리올레핀계 발포체(1)는 그 재질이 다르며 그 가열치수변화율이 다르므로, 성형시에 휨 현상이 발생하는 등 불량이 발생하기 쉽다. 또한, 폴리올레핀계 발포체(1)에 표피재(3)를 접착하기 위해서 접착제(bond)를 사용해야 함은 물론, 기재(4)와 폴리올레핀계 발포체(1)를 라미네이트 하기 위해서도, 두 시트의 가열치수변화율이 다르므로, 두 시트를 가열하여 열 라미네이트로 접착할 수 없고 반드시 접착제(bond)를 사용해야 한다. 또한, 자동차 천정재의 제조에 사용되는 기재(1)는 그 두께가 상당히 두꺼우므로, 자동차 천정재를 제조하기 위해서는 접착제를 이용하여 기재와 폴리올레핀계 발포체를 접착하는 공정과, 접착제를 이용하여 폴리올레핀계 발포체의 타 일면에 표피재(3)를 접착하는 공정을 거쳐야 하므로, 공정이 복잡하다. 또한, 기재(4)가 상당히 두꺼우므로 중량감이 있고 자동차 천정부위에 부착하여 성형하기 어렵다. 또한, 각 시트를 라미네이트 하기 위해서는 접착제가 반드시 필요하며, 사용되는 기재가 고가이므로, 자동차 천정재를 제조하기 위해서는 그 비용이 증가하게 된다. 더욱이, 종래의 자동차 천정재에 사용되는 각 시트는 그 재질이 다르므로, 재활용하기 위해서는 각 시트를 분리하여야 하므로 사실상 재활용이 불가능하다. 따라서, 환경오염의 문제가 대폭 증가하게 된다.As a conventional automotive ceiling material, as shown in Figure 3, wood stock (wood stock), a glass wool (base material) consisting of a polypropylene (PP) impregnated composite material (PP), and polyolefin-based foam (1) And a three-layer laminated sheet formed by laminating a skin material 3 such as a PVC sheet or a cloth or a nonwoven fabric. By the way, in the case of the conventional automotive ceiling material, the PP impregnated composite material of the wood stock or glass wool used as the base material 4 and the polyolefin-based foam 1 have different materials and different heating dimensional change rates, and thus warp during molding. Such defects are likely to occur. In addition, in order to adhere the skin material 3 to the polyolefin foam 1, not only an adhesive should be used, but also the lamination rate of heating dimensions of the two sheets in order to laminate the base material 4 and the polyolefin foam 1. Because of this difference, the two sheets cannot be heated and bonded with a thermal laminate and a bond must be used. In addition, since the base material 1 used in the manufacture of the automotive ceiling material is very thick, in order to manufacture the automotive ceiling material, a process of adhering the substrate and the polyolefin foam using an adhesive and a polyolefin foam using the adhesive Since it is necessary to go through the step of adhering the skin 3 to the other surface of the, the process is complicated. In addition, since the base material 4 is considerably thick, there is a sense of weight and it is difficult to attach and mold the automobile ceiling. In addition, in order to laminate each sheet, an adhesive is necessary, and since the base material used is expensive, the cost increases in order to manufacture a vehicle ceiling material. Moreover, since each sheet used in a conventional vehicle ceiling material is different in material, it is virtually impossible to recycle because each sheet must be separated to be recycled. Thus, the problem of environmental pollution is greatly increased.
따라서 본 고안의 목적은 상기의 문제점을 고려하여, 같은 재질의 시트를 사용함으로써 재활용이 용이하며 성형시 휨 현상이 없으며 불량률이 감소될 수 있는 자동차 천정재를 제공하는 것이다.Accordingly, an object of the present invention is to provide a vehicle ceiling material which can be easily recycled, there is no warpage phenomenon during molding, and a defective rate can be reduced by using the sheet of the same material in consideration of the above problems.
도 1은 본 고안에 의한 자동차 천정재인 폴리올레핀계 3층 적층체의 단면도이다.1 is a cross-sectional view of a polyolefin-based three-layer laminate which is a vehicle ceiling material according to the present invention.
도 2는 본 고안에 의한 자동차 천정재인 4층 적층체의 단면도이다.2 is a cross-sectional view of a four-layer laminate which is a vehicle ceiling material according to the present invention.
도 3은 종래 자동차 천정재의 단면도이다.3 is a cross-sectional view of a conventional automotive ceiling material.
* 도면의 주요부분에 대한 부호의설명* Explanation of symbols for the main parts of the drawings
1. 폴리올레핀계 발포체(PO foam) 2. 폴리올레핀계 시트(PO sheet)1. Polyolefin foam (PO foam) 2. Polyolefin sheet (PO sheet)
3. 표피재 4. 기재3. Skin 4. Material
상기 목적을 달성하기 위한 자동차 천정재의 구성은, 본 고안의 자동차 천정재의 단면도를 도시하는 도 1 및 도 2를 참고하여 상세히 설명한다.The configuration of the vehicle ceiling material for achieving the above object will be described in detail with reference to FIGS. 1 and 2 showing a cross-sectional view of the vehicle ceiling material of the present invention.
도 1에 도시된 바와같이, 본 고안에 의한 자동차 천정재는, 폴리올레핀계 발포체(1)와, 폴리올레핀계 발포체(1)와 같은 재질을 사용함으로써 라미네이트 시에 접착제를 사용할 필요 없이 열 라미네이트 할 수 있도록 하기 위해 폴리올레핀을 주성분으로 하여 이루어지며, 상기 폴리올레핀계 발포체의 양쪽 표면에 라미네이트 되는 폴리올레핀계 시트(2, 2)와,를 라미네이트 하여 형성된 3층의 적층체로 구성된다. 즉, 폴리올레핀계 발포체(1)의 양쪽 표면에 폴리올레핀계 시트(2, 2)를 라미네이트 하여 제조한 3층의 적층체로 구성된다. 또한 자동차 천정재는, 자동차 내부의 흡음성을 향상시키기 위해서, 도 2에 도시된 바와같이, 폴리올레핀계 발포체(1)의 양면에 폴리올레핀계 시트(2, 2)를 라미네이트 하여 제조한 3층의 적층체의 일면에 클로쓰(Cloth)나 부직포 등의 표피재(3)를 접착하여 구성된 4층 적층체로 구성되기도 한다.As shown in Figure 1, the automotive ceiling material according to the present invention, by using the same material as the polyolefin-based foam (1) and polyolefin-based foam (1) to be able to thermally laminate without the need for an adhesive at the time of lamination The polyolefin-based sheet is composed of polyolefin-based sheets 2 and 2 laminated on both surfaces of the polyolefin-based foam, and a three-layer laminate formed by laminating the polyolefin-based foam. That is, it consists of three layers of laminated bodies manufactured by laminating the polyolefin sheets 2 and 2 on both surfaces of the polyolefin foam 1. In addition, in order to improve the sound absorption of the inside of an automobile, the automotive ceiling material is made of a three-layer laminate manufactured by laminating polyolefin-based sheets 2 and 2 on both sides of the polyolefin-based foam 1, as shown in FIG. It may be composed of a four-layer laminate formed by adhering the skin 3 such as cloth or nonwoven to one surface.
본 고안의 자동차 천정재에 사용되는 폴리올레핀계 발포체(1)는 발포 배율이 20∼30배이며 밀도가 0.03∼0.058g/cm3이며 두께가 3∼6mm인 것이 좋다. 또한 발포체(1)의 상, 하면에 라미네이트 합지되는 폴리올레핀계 시트(2, 2)는 두께가 0.25∼0.4mm인 것이 좋다.The polyolefin-based foam 1 used in the automotive ceiling of the present invention has a foaming ratio of 20 to 30 times, a density of 0.03 to 0.058 g / cm 3, and a thickness of 3 to 6 mm. In addition, the polyolefin-based sheets 2 and 2 laminated on the upper and lower surfaces of the foam 1 preferably have a thickness of 0.25 to 0.4 mm.
본 고안에 사용되는 폴리올레핀계 시트(2, 2)는, 용융지수 5.0인 폴리프로필렌(PP)계 수지 60중량부와, 용융지수 1∼3이고 밀도가 0.930g/cm3인 폴리에틸렌(PE)계 수지 40중량부와로 이루어진 폴리올레핀(PO)계 수지 100중량부에 대하여, 산화방지제 0.1∼0.6 중량부와, 가교조제 1∼2중량부로 이루어지는 조성물로 이루어진다.The polyolefin-based sheets 2 and 2 used in the present invention are 60 parts by weight of a polypropylene (PP) resin having a melt index of 5.0, and a polyethylene (PE) system having a melt index of 1 to 3 and a density of 0.930 g / cm 3 . It consists of a composition which consists of 0.1-0.6 weight part of antioxidants, and 1-2 weight part of crosslinking aids with respect to 100 weight part of polyolefin (PO) type resins which consist of 40 weight part of resins.
즉, 폴리올레핀계 시트에 사용되는 폴리올레핀의 용융지수(MI)는 1.0∼6.0이며, 융점은 100∼175℃이며, 밀도는 0.9∼1.0g/cm3인 것이 좋다. 여기에 탄성을 부여하기 위하여, 아크릴로 니트릴, 스티렌 부타디엔, 니트로 부타디엔, 에틸렌 프로필렌 고무 중 단독 혹은 혼합 사용하여 수지 조성물 100 중량부를 구성한다.That is, it is preferable that the melt index (MI) of the polyolefin used for a polyolefin sheet is 1.0-6.0, melting | fusing point is 100-175 degreeC, and density is 0.9-1.0 g / cm <3> . In order to give elasticity here, 100 weight part of resin compositions are comprised using acrylonitrile, styrene butadiene, nitro butadiene, ethylene propylene rubber individually or in mixture.
폴리올레핀계 시트에 사용되는 폴리프로필렌(PP)계 수지는, 폴리프로필렌 단독 공중합체(호모 코폴리머)와 폴리프로필렌을 주성분으로 하는 공중합체의 혼합물이다. 이때, 폴리프로필렌을 주성분으로 하는 공중합체는 폴리프로필렌이 85% 이상 함유된 α-올레핀 공중합체(랜덤 혹은 블록 코폴리머) 또는 α-올레핀이 2종 공중합된 3원 공중합체(터 폴리머)이며, α-올레핀은 에틸렌, 1-헥센, 4-메틸-1-펜텐, 1-옥텐, 1-부텐, 1-펜텐 등을 예시할 수 있다.The polypropylene (PP) resin used for the polyolefin sheet is a mixture of a polypropylene homopolymer (homo copolymer) and a copolymer containing polypropylene as a main component. At this time, the copolymer having a polypropylene as a main component is an α-olefin copolymer (random or block copolymer) containing 85% or more of polypropylene or a ternary copolymer (terpolymer) in which 2 types of α-olefins are copolymerized. (alpha) -olefin can illustrate ethylene, 1-hexene, 4-methyl-1- pentene, 1-octene, 1-butene, 1-pentene, etc.
또한, 폴리올레핀계 시트에 사용되는 폴리에틸렌(PE)계 수지는, 폴리에틸렌 단독 중합체, 또는 폴리에틸렌을 주성분으로 하는 공중합체이다. 여기서, 폴리에틸렌을 주성분으로 하는 공중합체란 폴리에틸렌을 80%이상 함유하는 α-올레핀 공중합체이며, α-올레핀은 에틸렌, 1-헥센, 4-메틸-1-펜텐, 1-옥텐, 1-부텐, 1-펜텐 등을 예시할 수 있다.In addition, the polyethylene (PE) resin used for a polyolefin sheet is a polyethylene homopolymer or a copolymer containing polyethylene as a main component. Herein, the copolymer containing polyethylene as a main component is an α-olefin copolymer containing 80% or more of polyethylene, and the α-olefin is ethylene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-butene, 1-pentene etc. can be illustrated.
상기의 조성비로 구성된 조성물을 이용하여 폴리올레핀계 시트를 제조하기 위해서, 우선 상기의 조성물을 니더믹서(Kneader mixer)에서 20∼30분간 용융 혼련한다. 그후, 혼련된 조성물을 이축 압출기를 이용하여 두께가 0.25∼0.4mm인 시트로 제조한다. 제조된 시트체의 내열성 및 강성을 향상시키기 위해서, 전자선 가교장치를 통과시켜 1∼4Mard의 전자선으로 조사한다. 또한 이렇게 제조된 폴리올레핀계 시트에 컬러링(coloring), 엠보싱(embossing) 등의 별도 공정을 행할 수도 있다.In order to manufacture a polyolefin sheet using a composition composed of the above composition ratio, first, the composition is melt kneaded in a kneader mixer for 20 to 30 minutes. Thereafter, the kneaded composition is prepared into a sheet having a thickness of 0.25 to 0.4 mm using a twin screw extruder. In order to improve the heat resistance and rigidity of the manufactured sheet | seat body, it is irradiated with the electron beam of 1-4Mard through an electron beam crosslinking apparatus. In addition, the polyolefin sheet thus produced may be subjected to a separate process such as coloring and embossing.
본 고안에 사용되는 연속성의 폴리올레핀 가교발포체(1)를 얻기 위해서는, 일반적으로 사용되고 있는 폴리프로필렌계 수지에 비해 고분자량이고, 결정화도가 높은 폴리프로필렌(PP)이나, 또는 발포시 점탄성을 증가시킬 수 있는 α-올레핀이 중합된 선형 저밀도 폴리에틸렌, 초저밀도 폴리에틸렌 또는 고밀도 폴리에틸렌 등을 사용한다.In order to obtain the continuous polyolefin crosslinked foamed body (1) used in the present invention, polypropylene (PP) having a high molecular weight and high crystallinity compared to a polypropylene resin generally used, or which can increase viscoelasticity at the time of foaming Linear low density polyethylene, ultra low density polyethylene, or high density polyethylene polymerized with α-olefin is used.
본 고안의 폴리올레핀 가교발포체(1)를 제조하기 위한 제조방법은 다음과 같다. 혼련기(kneader)를 이용하여 상기와 같은 폴리올레핀 수지와, 발포제, 가교조제 등의 충진재를 배합하여 마스터 베치(M/B)를 만든 후, 압출기를 이용하여 시트형태의 성형체를 만든다. 시트형태의 성형체를 고온의 발포로를 통과시켜 연속 발포체를 얻거나, 시트형태의 성형체를 전자선 가교장치에 통과시켜 가교공정을 거친 후 발포로를 통과시켜서 소정의 발포체(foam)를 얻는다. 그 결과, 발포체의 발포배율이 20∼30배이며, 밀도가 0.03∼0.058g/cm3이며, 두께가 3∼6mm가 되도록 제조한다.The production method for preparing the polyolefin crosslinked foam (1) of the present invention is as follows. Using a kneader, a polyolefin resin as described above, a filler such as a foaming agent, a crosslinking aid, etc. are mixed to form a master batch (M / B), and then a extruder is used to form a sheet-shaped molded article. The sheet-shaped molded body is passed through a high temperature foaming furnace to obtain a continuous foam, or the sheet-shaped molded body is passed through an electron beam crosslinking apparatus and subjected to a crosslinking process, and then passed through the foaming furnace to obtain a predetermined foam. As a result, it is manufactured so that foaming ratio of foam is 20-30 times, density is 0.03-0.058g / cm <3> , and thickness is 3-6mm.
상기의 방법으로 제조된 폴리올레핀계 발포체(1)는, 종래의 일반적으로 사용되던 폴리프로필렌(PP)계 수지에 비해 고분자량이고, 결정화도가 높아서 융점이 높은 폴리프로필렌계 수지를 사용하므로, 내열성이 뛰어나고 가열시에 치수변화율이 적다. 또한, 발포제 분해온도 이하에서의 혼련이 잘되는 특징으로 인해, 시트 제조가 용이하다. 또한 본 고안에서 사용되는 폴리에틸렌계 수지는 발포시 점탄성을 증가시킬 수 있는 α-올레핀이 중합된 선형 저밀도 폴리에틸렌이나 초저밀도 폴리에틸렌을 사용하므로, 신율 및 강도가 높으며, 이러한 조성물을 사용하여 얻은 폴리올레핀계 수지 발포체(1)는 가공시 절단되거나 기포가 파괴되는 것을 방지할 수 있으며, 재료강도 및 내열성이 우수하여 성형성이 매우 좋다.The polyolefin foam 1 produced by the above method has a high molecular weight and high crystallinity and high melting point, and thus has a high heat resistance compared to the conventionally used polypropylene (PP) resin. Low rate of dimensional change during heating In addition, the sheet is easy to manufacture due to the characteristics of kneading well below the blowing agent decomposition temperature. In addition, since the polyethylene resin used in the present invention uses a linear low density polyethylene or an ultra low density polyethylene polymerized with α-olefin which can increase the viscoelasticity when foaming, the elongation and strength are high, and the polyolefin resin obtained using such a composition The foam 1 can be prevented from being cut or broken during processing, and has excellent moldability due to excellent material strength and heat resistance.
상기의 조성비와 제조방법으로 제조된 폴리올레핀계 시트(2, 2)와 폴리올레핀 가교발포체(1)를 이용하여 자동차 천정재를 제조하는 방법은 다음과 같다.Method for producing a vehicle ceiling using the polyolefin-based sheets (2, 2) and the polyolefin cross-linking foam (1) prepared by the above composition ratio and production method is as follows.
폴리올레핀 가교발포체(1) 상하 표면에 코로나(Corona) 방전처리를 하고, 여기에 접착제를 도포한 후 건조시킨다. 그후 접착제가 도포된 폴리올레핀계 발포체(1)에 열을 가하여 접착제의 접착성을 부여한 후, 폴리올레핀계 시트(2, 2)를 폴리올레핀 가교발포체(1)의 상하면에 접착시켜서, 3층의 자동차 천정재를 제조한다. 또는 폴리올레핀 가교발포체(1)의 양면과, 폴리올레핀계 시트(2, 2)의 일면에 적외선 히터를 사용하여 열을 가한 후, 라미네이트 접합하여, 폴리올레핀계 발포체(1) 양면에 폴리올레핀계 시트(2, 2)가 적층된 3층의 자동차 천정재를 제조함으로써, 접착제를 사용하는 공정을 생략할 수도 있다.Corona discharge treatment is applied to the upper and lower surfaces of the polyolefin crosslinked foam (1), and then the adhesive is applied to it and dried. Thereafter, heat is applied to the polyolefin-based foam 1 to which the adhesive is applied to impart the adhesiveness of the adhesive, and then the polyolefin-based sheets 2 and 2 are adhered to the upper and lower surfaces of the polyolefin crosslinked foam 1 to form a three-layered automotive ceiling To prepare. Alternatively, after heat is applied to both surfaces of the polyolefin crosslinked foam 1 and one surface of the polyolefin sheet 2 and 2 using an infrared heater, laminate bonding is performed, and the polyolefin sheet 2, 2 is formed on both surfaces of the polyolefin foam 1. By manufacturing the three-layer automotive ceiling material in which 2) is laminated, the step of using an adhesive may be omitted.
자동차 내의 외관 및 흡음성을 증진시키기 위해서는 접착제를 이용하여, 도 1에 도시된 바와같은 3층 적층체의 일면에 접착제나 핫멜트(Hot melt) 필름을 이용하여 표피재(3)를 접착하여 4층의 자동차 천정재를 제조한다.In order to improve the appearance and sound absorption in the automobile, by using an adhesive, one surface of the three-layer laminate as shown in Fig. 1 by using the adhesive or hot melt film to adhere the skin material (3) Manufactures car ceiling materials.
즉, 본 고안에 의한 자동차 천정재의 경우는, 폴리올레핀계 수지를 주성분으로 하는 폴리올레핀계 시트(2, 2) 및 폴리올레핀계 발포체(1)로 구성되므로, 그 재질이 같아서 가열치수변화율이 비슷하므로, PO시트와 PO발포체를 라미네이트 하기 위해서 반드시 접착제를 사용할 필요가 없고 열 라미네이트 공법으로도 간단하게 3층의 적층체를 제조할 수 있게 되는 것이다.That is, in the case of the vehicle ceiling according to the present invention, since the polyolefin-based sheets (2, 2) and polyolefin-based foams (1) mainly composed of polyolefin-based resin, the material is the same, the heating dimensional change rate is similar, PO In order to laminate the sheet and the PO foam, it is not necessary to use an adhesive, and a three-layer laminate can be produced simply by a thermal lamination method.
상기 설명된 바와같이, 본 고안의 자동차 천정재는 폴리올레핀 수지를 주성분으로 하는 폴리올레핀계 시트(2, 2) 및 폴리올레핀계 발포체(1)를 이용하여 구성되는 3층의 적층체로 구성되거나, 3층 적층체의 일면에 부직포나 클로쓰 등의 표피재(3)를 더 적층한 4층의 적층체로 구성되는 것이다. 따라서, 본 고안의 자동차 천정재는 같은 재질을 사용하므로, 가열치수변화율이 비슷하기 때문에, 특별히 접착제를 사용하지 않고 열 라미네이트 공법을 이용하여 적층체를 제조할 수 있으며, 또한 가열치수변화율이 비슷하므로 성형시 휨 현상으로 인한 불량이 거의 발생하지 않는다. 또한, 종래의 기재는 그 두께가 두꺼워서 성형시 중량감이 있으며 자동차 천정에 부착하기 어려웠으나, 본 고안의 자동차 천정재의 경우는 두께가 얇으므로 중량감이 적고 자동차 천정에 장착할 때에 외관이 미려하다. 또한, 종래의 기재는 고가의 재료였으며, 각 층을 라미네이트 하기 위하여 접착제를 필요로 하였으나, 본 고안의 경우 특별히 접착제 필요로 하지 않으므로 그 자동차 천정재를 제조하는데 비용이 절약된다.As described above, the automotive ceiling of the present invention is composed of a three-layer laminate composed of a polyolefin-based sheet (2, 2) and a polyolefin-based foam (1) mainly composed of a polyolefin resin, or a three-layer laminate It consists of four layers of laminated bodies which further laminated | stacked the skin materials 3, such as a nonwoven fabric and a cloth, on one surface of the. Therefore, since the automotive ceiling material of the present invention uses the same material, the heating dimensional change rate is similar, it is possible to manufacture a laminate using a thermal lamination method without using an adhesive, and also because the heating dimensional change rate is similar, Almost no defects due to flexural phenomenon occur. In addition, the conventional substrate has a thick thickness and has a heavy feeling in molding and it is difficult to attach to the car ceiling. However, in the case of the automotive ceiling material of the present invention, the thickness is thin, so the weight is small and the appearance is beautiful when mounted on the car ceiling. In addition, the conventional substrate was an expensive material, and needed an adhesive to laminate each layer, but the present invention does not require an adhesive, so the cost of manufacturing the vehicle ceiling material is saved.
Claims (2)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR2019970004019U KR200166707Y1 (en) | 1997-03-07 | 1997-03-07 | Vehicle ceiling material |
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| Application Number | Priority Date | Filing Date | Title |
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| KR2019970004019U KR200166707Y1 (en) | 1997-03-07 | 1997-03-07 | Vehicle ceiling material |
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| KR19980060012U true KR19980060012U (en) | 1998-11-05 |
| KR200166707Y1 KR200166707Y1 (en) | 2000-01-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030047438A (en) * | 2001-12-10 | 2003-06-18 | (주)대한솔루션 | sound absorbing and insulating material |
| KR100449938B1 (en) * | 2003-06-11 | 2004-09-24 | 주식회사 하우솔 | Panel of honeycomb structure in architecture and the fabricating method there of |
| KR100882718B1 (en) * | 2007-07-18 | 2009-02-06 | 한일이화주식회사 | The base material for vehicle head liner |
| KR100883033B1 (en) * | 2007-12-03 | 2009-02-09 | 한일이화주식회사 | The base material for vehicle head liner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101364437B1 (en) * | 2012-08-10 | 2014-02-17 | 영보화학 주식회사 | Manufacturing method of a composite substrate for an automobile |
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1997
- 1997-03-07 KR KR2019970004019U patent/KR200166707Y1/en not_active IP Right Cessation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030047438A (en) * | 2001-12-10 | 2003-06-18 | (주)대한솔루션 | sound absorbing and insulating material |
| KR100449938B1 (en) * | 2003-06-11 | 2004-09-24 | 주식회사 하우솔 | Panel of honeycomb structure in architecture and the fabricating method there of |
| KR100882718B1 (en) * | 2007-07-18 | 2009-02-06 | 한일이화주식회사 | The base material for vehicle head liner |
| KR100883033B1 (en) * | 2007-12-03 | 2009-02-09 | 한일이화주식회사 | The base material for vehicle head liner |
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