KR20230143367A - Sandwich panel for special purpose vehicle - Google Patents
Sandwich panel for special purpose vehicle Download PDFInfo
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- KR20230143367A KR20230143367A KR1020220042159A KR20220042159A KR20230143367A KR 20230143367 A KR20230143367 A KR 20230143367A KR 1020220042159 A KR1020220042159 A KR 1020220042159A KR 20220042159 A KR20220042159 A KR 20220042159A KR 20230143367 A KR20230143367 A KR 20230143367A
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- South Korea
- Prior art keywords
- support sheet
- honeycomb core
- paper honeycomb
- weight
- sandwich panel
- Prior art date
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- 239000012790 adhesive layer Substances 0.000 claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 239000003365 glass fiber Substances 0.000 claims abstract description 12
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 12
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 12
- 239000004743 Polypropylene Substances 0.000 claims abstract description 11
- -1 polypropylene Polymers 0.000 claims abstract description 11
- 229920001155 polypropylene Polymers 0.000 claims abstract description 11
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 6
- 238000007765 extrusion coating Methods 0.000 claims abstract description 4
- 229920001971 elastomer Polymers 0.000 claims description 7
- 239000012783 reinforcing fiber Substances 0.000 claims description 6
- 238000009941 weaving Methods 0.000 claims description 6
- 238000009960 carding Methods 0.000 claims description 3
- YACLQRRMGMJLJV-UHFFFAOYSA-N chloroprene Chemical compound ClC(=C)C=C YACLQRRMGMJLJV-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 abstract description 7
- 239000011162 core material Substances 0.000 description 25
- 239000000853 adhesive Substances 0.000 description 12
- 230000001070 adhesive effect Effects 0.000 description 12
- 239000010410 layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
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
- 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
- B32B3/10—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 discontinuous layer, i.e. formed of separate pieces of material
- B32B3/12—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 discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
-
- 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/02—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments
- B32B17/04—Layered products essentially comprising sheet glass, or glass, slag, or like fibres in the form of fibres or filaments bonded with or embedded in a plastic substance
-
- 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/065—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of paper or cardboard
-
- 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
-
- 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
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
-
- 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
-
- 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
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/02—Layered products comprising a layer of paper or cardboard 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
- 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
- B32B5/06—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer mechanically connected, e.g. by needling to another layer, e.g. of fibres, of paper
-
- 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
-
- 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
- B32B2250/00—Layers arrangement
- B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
-
- 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
- B32B2607/00—Walls, panels
Landscapes
- Laminated Bodies (AREA)
Abstract
본 발명은 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량에 적용할 수 있는 특수목적 차량용 샌드위치패널에 관한 것으로서, 종이 하니콤 코어(honeycomb core); 상기 종이 하니콤 코어의 표면과 이면에 각각 접착제층을 개재하여 접착된 지지 시트;를 포함하며, 상기 지지 시트는 열가소성 복합재로 구성되고, 상기 각 지지 시트의 노출된 표면에는 부직포가 인-몰딩(in-molding) 되어 접착되며, 상기 지지 시트는, 30 내지 60중량%의 니들 펀칭된 유리섬유매트 표면과 이면에 각각 40 내지 70중량%의 용융 폴리프로필렌 수지가 압출 코팅되고 경화되어 제조되는 것을 특징으로 한다.
본 발명에 따르면, 종이 하니콤 코어를 적용함으로써 중량대비 강성이 뛰어나고 가볍고 제조원가가 저렴하며 인-몰드 성형이 가능하며, 열가소성 복합제의 지지 시트와 종이 하니콤 코어 간에 접착제층을 개재함으로써 박리 현상이 발생하지 않는 장점을 제공할 수 있다.The present invention relates to a sandwich panel for special-purpose vehicles that can be applied to special-purpose vehicles such as refrigerated trucks or camping cars, and includes a paper honeycomb core; A support sheet is adhered to the front and back surfaces of the paper honeycomb core via an adhesive layer, wherein the support sheet is made of a thermoplastic composite, and a non-woven fabric is in-molded on the exposed surface of each support sheet ( The support sheet is manufactured by extrusion coating and curing 40 to 70% by weight of molten polypropylene resin on the surface and back of 30 to 60% by weight of a needle-punched glass fiber mat, respectively. Do it as
According to the present invention, by applying a paper honeycomb core, the rigidity-to-weight ratio is excellent, it is light, the manufacturing cost is low, and in-mold molding is possible, and the peeling phenomenon occurs by interposing an adhesive layer between the support sheet of the thermoplastic composite and the paper honeycomb core. It can provide advantages that are not available.
Description
본 발명은 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량을 위한 샌드위치패널에 관한 것으로서, 더욱 상세하게는 종이 하니콤 코어를 적용하여 가볍고 제조원가가 저렴하며 인몰드 성형이 가능한 특수목적 차량용 샌드위치패널에 관한 것이다.The present invention relates to a sandwich panel for special-purpose vehicles, including refrigerated trucks and camping cars, and more specifically, to a sandwich panel for special-purpose vehicles that is lightweight, inexpensive to manufacture, and capable of in-mold forming by applying a paper honeycomb core. will be.
일반적으로 샌드위치패널(sandwitch panel)은 중량대비 강성이 뛰어나고 코어와 지지층을 다양하게 구성할 수 있다는 장점 때문에 차량의 부품을 비롯하여 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량에도 적용이 확대되고 있다.In general, sandwich panels have excellent rigidity-to-weight ratio and the advantage of being able to configure the core and support layer in various ways, so their application is expanding not only to vehicle parts but also to special-purpose vehicles such as refrigerated trucks and camping cars.
차량의 부품으로는 로드 플로어(road floor), 러기지 커버(luggage cover), 파슬 셀프(parcel shelf) 등에 적용되고 있다.It is applied to vehicle parts such as road floors, luggage covers, and parcel shelves.
이와 같은 종래의 샌드위치 패널은 폴리프로필렌 하니콤에 지지 시트를 적용한 구조가 개시되어 있으나, 폴리프로필렌 하니콤은 중량이 크고 제조원가가 비싸다는 단점이 있다.Such a conventional sandwich panel has a structure in which a support sheet is applied to polypropylene honeycomb, but polypropylene honeycomb has the disadvantage of being heavy and expensive to manufacture.
이를 해결하기 위해서, 종이 하니콤을 적용한 구조가 제시되고 있으나, 지지 시트와의 접착력 문제로 종이 하니콤에 열경화성 수지, 가령 우레탄 수지를 함침하는 구조가 주로 적용되고 있다.To solve this problem, a structure using paper honeycomb has been proposed, but due to problems with adhesion to the support sheet, a structure in which the paper honeycomb is impregnated with a thermosetting resin, such as a urethane resin, is mainly applied.
하지만, 이와 같은 구조에 의하면, 중량대비 강성이 떨어지고 재활용이 어려우며 인몰드 성형이 불가능하다는 문제점이 있다.However, with this structure, there are problems in that the rigidity-to-weight ratio is low, recycling is difficult, and in-mold molding is impossible.
한편, 종래기술에 있어, 국내등록특허 제10-1918863호에서는 '중공이 형성된 정육각기둥 형상의 단위 구조체가 연속되게 연결되는 허니콤 구조(honeycomb structure)를 포함하는 것으로서, 플레이트 형상을 가지고 단열을 위한 진공 공간을 형상하도록 이격 배치되는 한 쌍의 패널 플레이트; 상기 진공 공간의 진공 상태를 유지하도록, 상기 한 쌍의 패널 플레이트 사이에 외측 부분을 따라 상기 한 쌍의 패널 플레이트의 내면에 밀착되게 개재되고, 러버(rubber) 재질을 포함하는 밀폐부; 및 팽창점토 및 유리섬유를 포함하고 상기 진공 공간에 삽입되어 상기 한 쌍의 패널 플레이트의 내면을 지지함으로써 상기 패널 플레이트의 강도를 보강하는 보강 심재를 포함하는 허니콤 구조의 보강 심재 및 이를 포함하는 진공 단열 패널, 보강 심재의 제조 방법'을 개시하고 있다.Meanwhile, in the prior art, Domestic Patent No. 10-1918863 states that 'it includes a honeycomb structure in which unit structures in the shape of hollow regular hexagonal columns are continuously connected, and has a plate shape for insulation. A pair of panel plates spaced apart to form a vacuum space; a sealing portion interposed between the pair of panel plates along an outer portion in close contact with the inner surface of the pair of panel plates to maintain a vacuum state of the vacuum space and made of a rubber material; and a reinforcing core material of a honeycomb structure including expanded clay and glass fiber and inserted into the vacuum space to reinforce the strength of the panel plate by supporting the inner surface of the pair of panel plates, and a vacuum containing the same. ‘Method for manufacturing insulation panels and reinforcing core materials’ is disclosed.
또한, 국내공개특허 제10-2114835호에서는 '상하부면에 복수개의 요홈이 형성된 심재와. 상기 요홈이 형성된 심재의 상하부면에 각각 접합수지에 의해 접합되는 내층패널과, 상기 내층패널에 접합되는 외층패널로 이루어진 복합패널에 있어서, 상기 심재에 형성되는 복수개의 요홈에는 상기 내층패널과의 접합시 도포되는 접합수지가 유입될 수 있는 접합수지에서 발생되는 가스가 상기 요홈을 통해 외부로 배출될 수 있으며, 상기 내층패널은 길이방향을 따라 폭방향을 관통하도록 복수개의 에어홀이 형성된 접착력 및 내구성이 향상된 적재구조물용 복합패널'을 개시하고 있다.In addition, in Korean Patent Publication No. 10-2114835, 'a heart material with a plurality of grooves formed on the upper and lower surfaces. In the composite panel consisting of an inner layer panel each bonded to the upper and lower surfaces of the core material in which the groove is formed with a bonding resin, and an outer layer panel bonded to the inner layer panel, a plurality of grooves formed in the core material are used for bonding with the inner layer panel. Gas generated from the bonding resin into which the applied bonding resin can flow can be discharged to the outside through the groove, and the inner layer panel has a plurality of air holes formed to penetrate the width direction along the length direction for adhesion and durability. This improved composite panel for loading structures is being disclosed.
본 발명은 상술한 종래의 문제점을 해소 및 이를 감안하여 안출된 것으로서, 종이 하니콤 코어를 적용하여 가볍고 제조원가가 저렴하며 인몰드 성형이 가능한 특수목적 차량용 샌드위치패널을 제공하는데 그 목적이 있다.The present invention was developed in consideration of and to solve the above-mentioned conventional problems, and its purpose is to provide a special-purpose vehicle sandwich panel that is lightweight, has low manufacturing cost, and is capable of in-mold forming by applying a paper honeycomb core.
본 발명은 열가소성 복합제의 지지 시트와 종이 하니콤 코어 간에 접착제층을 개재함으로써 박리 현상이 발생하지 않도록 한 특수목적 차량용 샌드위치패널을 제공하는데 그 목적이 있다.The purpose of the present invention is to provide a sandwich panel for a special purpose vehicle that prevents delamination by interposing an adhesive layer between a thermoplastic composite support sheet and a paper honeycomb core.
본 발명은 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량에 적용할 수 있는 특수목적 차량용 샌드위치패널을 제공하는데 그 목적이 있다.The purpose of the present invention is to provide a sandwich panel for special-purpose vehicles that can be applied to special-purpose vehicles such as refrigerated trucks or camping cars.
상기의 목적을 달성하기 위한 본 발명에 따른 특수목적 차량용 샌드위치패널은, 종이 하니콤 코어(honeycomb core); 상기 종이 하니콤 코어의 표면과 이면에 각각 접착제층을 개재하여 접착된 지지 시트;를 포함하며, 상기 지지 시트는 열가소성 복합재로 구성되고, 상기 각 지지 시트의 노출된 표면에는 부직포가 인-몰딩(in-molding) 되어 접착되며, 상기 지지 시트는, 30 내지 60중량%의 니들 펀칭된 유리섬유매트 표면과 이면에 각각 40 내지 70중량%의 용융 폴리프로필렌 수지가 압출 코팅되고 경화되어 제조되는 것을 특징으로 한다.A sandwich panel for a special purpose vehicle according to the present invention to achieve the above object includes a paper honeycomb core; A support sheet is adhered to the front and back surfaces of the paper honeycomb core through an adhesive layer, wherein the support sheet is made of a thermoplastic composite, and a non-woven fabric is in-molded on the exposed surface of each support sheet ( The support sheet is manufactured by extrusion coating and curing 40 to 70% by weight of molten polypropylene resin on the surface and back of 30 to 60% by weight of a needle-punched glass fiber mat. Do it as
또한, 상기의 목적을 달성하기 위한 본 발명에 따른 특수목적 차량용 샌드위치패널은, 종이 하니콤 코어(honeycomb core); 상기 종이 하니콤 코어의 표면과 이면에 각각 접착제층을 개재하여 접착된 지지 시트;를 포함하며, 상기 지지 시트는 열가소성 복합재로 구성되고, 상기 각 지지 시트의 노출된 표면에는 부직포가 인-몰딩(in-molding) 되어 접착되며, 상기 지지 시트는, 40 내지 70중량%의 폴리프로필렌 수지와 30 내지 60중량%의 보강섬유를 혼합한 후, 카딩, 니들 펀칭 및 경화를 통하여 매트를 제조하고 이를 경화하여 제조하거나 또는 제직기로 직조하여 제조하는 것을 특징으로 한다.In addition, a sandwich panel for a special purpose vehicle according to the present invention to achieve the above object includes a paper honeycomb core; A support sheet is adhered to the front and back surfaces of the paper honeycomb core through an adhesive layer, wherein the support sheet is made of a thermoplastic composite, and a non-woven fabric is in-molded on the exposed surface of each support sheet ( The support sheet is made by mixing 40 to 70% by weight of polypropylene resin and 30 to 60% by weight of reinforcing fiber, then manufacturing a mat through carding, needle punching, and curing. It is characterized in that it is manufactured by manufacturing or by weaving with a weaving machine.
여기에서, 상기 접착제층은, 클로로프렌계 고무 10 내지 15%, 네오프렌계 고무 10 내지 15% 및 유기용제 70 내지 80%로 구성될 수 있다.Here, the adhesive layer may be composed of 10 to 15% chloroprene-based rubber, 10 to 15% neoprene-based rubber, and 70 to 80% organic solvent.
본 발명에 따르면, 종이 하니콤 코어를 적용함으로써 중량대비 강성이 뛰어나고 가볍고 제조원가가 저렴하며 인-몰드 성형이 가능한 유용함을 달성할 수 있다.According to the present invention, by applying a paper honeycomb core, it is possible to achieve excellent rigidity-to-weight ratio, light weight, low manufacturing cost, and the usefulness of in-mold molding.
본 발명에 따르면, 열가소성 복합제의 지지 시트와 종이 하니콤 코어 간에 접착제층을 개재함으로써 박리 현상이 발생하지 않는 유용함을 달성할 수 있다.According to the present invention, the usefulness of preventing peeling from occurring can be achieved by interposing an adhesive layer between the thermoplastic composite support sheet and the paper honeycomb core.
본 발명에 따르면, 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량에 적용할 수 있는 특수목적 차량용 샌드위치패널을 제공할 수 있다.According to the present invention, it is possible to provide a sandwich panel for special-purpose vehicles that can be applied to special-purpose vehicles such as refrigerated trucks or camping cars.
도 1은 본 발명의 실시예에 따른 특수목적 차량용 샌드위치패널을 나타낸 단면 구성도이다.Figure 1 is a cross-sectional configuration diagram showing a sandwich panel for a special purpose vehicle according to an embodiment of the present invention.
본 발명에 대해 첨부한 도면을 참조하여 바람직한 실시예를 설명하면 다음과 같으며, 이와 같은 상세한 설명을 통해서 본 발명의 목적과 구성 및 그에 따른 특징들을 보다 잘 이해할 수 있게 될 것이다.Preferred embodiments of the present invention will be described with reference to the accompanying drawings as follows. Through this detailed description, the purpose and configuration of the present invention and its characteristics will be better understood.
본 발명의 실시예에 따른 특수목적 차량용 샌드위치패널은 도 1에 나타낸 바와 같이, 종이 하니콤 코어(honeycomb core)(10)의 표면과 이면에 각각 접착제층(20)을 개재하여 열가소성 복합제의 지지 시트(30)가 접착되는 구성을 포함한다.As shown in FIG. 1, the sandwich panel for a special-purpose vehicle according to an embodiment of the present invention is a support sheet of thermoplastic composite with an adhesive layer 20 on the front and back surfaces of a paper honeycomb core 10, respectively. (30) includes a component to which the adhesive is attached.
이때, 상기 각 지지 시트(30)의 노출된 표면에는 마감재로 부직포가 인-몰딩(in-molding) 되어 접착될 수 있다.At this time, non-woven fabric may be in-molded and adhered to the exposed surface of each support sheet 30 as a finishing material.
상기 종이 하니콤 코어(10)의 두께는 5㎜~30㎜일 수 있으며, 때로는 8~15㎜의 두께와 8~15㎜의 셀 사이즈를 가질 수 있다.The paper honeycomb core 10 may have a thickness of 5 mm to 30 mm, and sometimes may have a thickness of 8 to 15 mm and a cell size of 8 to 15 mm.
상기 접착제층(20)은 종이 하니콤 코어(10)의 표면과 이면에 롤 코팅을 통하여 일정량의 접착제를 도포하고 가열 및 냉각 공정을 통해 접착제가 건조됨으로써 형성된다.The adhesive layer 20 is formed by applying a certain amount of adhesive to the front and back surfaces of the paper honeycomb core 10 through roll coating and drying the adhesive through a heating and cooling process.
이와 같이 접착체층(20)이 형성된 상태로 종이 하니콤 코어(10)를 준비해야 하기 때문에, 이를 위한 접착제는 적절한 접착력과 작업성을 가져야 한다. 다시 말해, 접착제는 지지 시트(30)와 종이 하니콤 코어(10)를 전체 면적에 걸쳐 균일하고 단단하게 접착시키는 기능에 더하여 접착 코팅량 조정을 위한 점도 및 접착 건조 후의 끈적임 등을 고려해야 한다. 특히, 제조를 위해 종이 하니콤 코어(10)를 적층하는 경우 끈적임이 크면 서로 붙게 되어 작업을 저해할 수도 있다. 이를 위해 접착제는 적절한 성분 비율을 구비해야 한다.Since the paper honeycomb core 10 must be prepared with the adhesive layer 20 formed in this way, the adhesive for this must have appropriate adhesive strength and workability. In other words, in addition to the adhesive's ability to uniformly and firmly adhere the support sheet 30 and the paper honeycomb core 10 over the entire area, the adhesive must take into account viscosity for adjusting the amount of adhesive coating and stickiness after adhesive drying. In particular, when stacking paper honeycomb cores 10 for manufacturing, if the stickiness is large, they may stick together and interfere with work. For this purpose, the adhesive must have an appropriate ingredient ratio.
바람직하게, 상기 접착제는 클로로프렌계 고무 10 내지 15%, 네오프렌계 고무 10 내지 15% 및 유기용제 70 내지 80%로 구성될 수 있다.Preferably, the adhesive may be composed of 10 to 15% chloroprene-based rubber, 10 to 15% neoprene-based rubber, and 70 to 80% organic solvent.
또한, 상기한 바와 같이, 상기 지지 시트(30)는 열가소성 수지와 보강섬유로 구성된 열가소성 복합제로 이루어진다.Additionally, as described above, the support sheet 30 is made of a thermoplastic composite material consisting of a thermoplastic resin and reinforcing fibers.
일 예로서, 상기 지지 시트(30)는 30 내지 60중량%의 니들 펀칭된 유리섬유매트 표면과 이면에 각각 40 내지 70중량%의 용융 폴리프로필렌 수지가 압출 코팅되고 경화되어 형성된다.As an example, the support sheet 30 is formed by extrusion coating and curing 40 to 70% by weight of molten polypropylene resin on the surface and back of 30 to 60% by weight of a needle-punched glass fiber mat, respectively.
구체적으로, 유리섬유를 5~10㎝로 절단하여 쵸핑(chopping)된 유리섬유를 벨트 위에 균일하게 뿌린 후 니들 펀칭(needle punching)하여 유리섬유 매트를 제조한다.Specifically, glass fibers are cut into 5 to 10 cm pieces, the chopped glass fibers are evenly sprinkled on a belt, and then needle punched to produce a glass fiber mat.
이어 유리섬유 매트의 표면과 이면에 용융 폴리프로필렌 수지를 압출기 T-다이를 통하여 투입하고, 200 내지 300℃의 온도와 1 내지 3기압 하에서 더블 벨트 프레스(Double Belt Press) 공정을 거친 후 냉각하여 지지 시트를 제조한다.Next, molten polypropylene resin is injected into the surface and back of the glass fiber mat through an extruder T-die, and subjected to a double belt press process at a temperature of 200 to 300 ℃ and 1 to 3 atm, then cooled and supported. Manufacture sheets.
여기에서, 보강재인 유리섬유매트의 함량이 30% 미만이면 시트 제조를 위한 롤 이동시 쉽게 끊어질 수 있고 물성이 떨어진다. 반면에 60%를 초과하면 수지와의 함침성이 떨어지고 유리섬유 노출에 따라 외관이 불량하다.Here, if the content of the glass fiber mat, which is a reinforcing material, is less than 30%, it can easily break when moving the roll for sheet manufacturing and the physical properties are poor. On the other hand, if it exceeds 60%, impregnation with resin is poor and the appearance is poor due to exposure to glass fiber.
때로는, 상기 지지 시트(30)에 있어, 다른 형태를 가질 수도 있는데, 40 내지 70중량%의 폴리프로필렌 수지와 30 내지 60중량%의 보강섬유를 균일하게 혼합하여 카딩, 니들 펀칭 및 경화를 통하여 매트를 제조하고 이를 오븐에 통과시켜 경화하여 제조할 수 있다.Sometimes, the support sheet 30 may have a different shape. 40 to 70% by weight of polypropylene resin and 30 to 60% by weight of reinforcing fiber are uniformly mixed to form a mat through carding, needle punching and curing. It can be manufactured by manufacturing and curing it by passing it through an oven.
또한 다른 예로서, 상기 지지 시트(30)는 40 내지 70중량%의 폴리프로필렌 수지와 30 내지 60중량%의 보강섬유를 혼합한 후 제직기로 직조하여 제조할 수 있다.As another example, the support sheet 30 can be manufactured by mixing 40 to 70% by weight of polypropylene resin and 30 to 60% by weight of reinforcing fiber and then weaving it using a weaving machine.
바람직하게, 보강섬유는 유리 섬유, 탄소 섬유, 또는 현무암(basalt) 섬유 를 적용할 수 있다.Preferably, the reinforcing fiber may be glass fiber, carbon fiber, or basalt fiber.
이하에서는, 본 발명에 따른 특수목적 차량용 샌드위치 패널의 제조방법에 대해 설명하기로 한다.Hereinafter, a method for manufacturing a sandwich panel for a special purpose vehicle according to the present invention will be described.
먼저, 열가소성 복합제로 구성된 지지 시트(30)를 오븐을 통과시켜 성형이 가능하도록 유연하게 한다.First, the support sheet 30 made of a thermoplastic composite is passed through an oven to make it flexible so that it can be molded.
이때, 오븐 온도는 오븐의 종류에 따라 다르지만, 적외선 오븐의 경우 180 내지 280℃ 온도 범위에서 2~3분간 가열한다.At this time, the oven temperature varies depending on the type of oven, but in the case of an infrared oven, it is heated in the temperature range of 180 to 280°C for 2 to 3 minutes.
이어 접착제가 코팅된 종이 하니콤 코어(10)를 적층하고 그 위에 다시 가열된 지지 시트를 적층한다. 이 과정에서 마감재가 적층되거나 또는 후술하는 프레스 공정에서 적층할 수 있다.Next, the adhesive-coated paper honeycomb core 10 is stacked, and the heated support sheet is stacked again on top of it. Finishing materials may be laminated during this process or may be laminated in a press process described later.
이 상태에서 프레스 금형으로 이송되어 프레스 된다.In this state, it is transferred to the press mold and pressed.
이때, 금형 온도는 종이 하니콤 코어(10), 지지 시트(30), 선택적으로 마감재와의 융착을 위해 40 내지 120℃가 적당하다.At this time, the mold temperature is suitable to be 40 to 120°C for fusing the paper honeycomb core 10, the support sheet 30, and optionally the finishing material.
여기에서, 성형 압력은 300톤 이하의 프레스로 성형 가능하고, 성형시간은 30초 내지 1분이 적절하다.Here, the molding pressure can be molded with a press of 300 tons or less, and the molding time is appropriately 30 seconds to 1 minute.
특히, 과도한 성형압력을 가할 경우 지지 시트가 마감재로 배어나올 수 있다.In particular, if excessive molding pressure is applied, the support sheet may bleed into the finishing material.
이에 따라, 본 발명을 통해서는 종이 하니콤 코어를 적용함으로써 중량대비 강성이 뛰어나고 가볍고 제조원가가 저렴하며, 특히 인-몰드 성형이 가능한 장점을 제공할 수 있다.Accordingly, through the present invention, by applying a paper honeycomb core, it is possible to provide the advantage of excellent rigidity to weight, lightness, low manufacturing cost, and in particular, in-mold molding.
또한, 열가소성 복합제의 지지 시트와 종이 하니콤 코어 간에 접착제층을 개재함으로써 박리 현상이 발생하지 않는 장점을 제공할 수 있다.In addition, interposing an adhesive layer between the thermoplastic composite support sheet and the paper honeycomb core can provide the advantage of preventing peeling.
또한, 냉동탑차나 캠핑카용 등을 비롯한 특수목적용 차량에 적용할 수 있는 특수목적 차량용 샌드위치패널을 제공할 수 있다.In addition, sandwich panels for special-purpose vehicles that can be applied to special-purpose vehicles, such as refrigerated trucks or camping cars, can be provided.
이상에서 설명한 실시예는 본 발명의 바람직한 실시예를 설명한 것에 불과하고 이러한 실시예에 극히 한정되는 것은 아니며, 본 발명의 기술적 사상과 청구범위 내에서 이 기술분야의 당해업자에 의하여 다양한 수정과 변형 등이 이루어질 수 있다 할 것이며, 이는 본 발명의 기술적 권리범위 내에 속한다 할 것이다.The embodiments described above merely describe preferred embodiments of the present invention and are not extremely limited to these embodiments, and various modifications and variations may be made by those skilled in the art within the technical spirit and scope of the claims of the present invention. It will be said that this can be achieved, and it will be said that it falls within the scope of the technical rights of the present invention.
10: 하니콤 코어
20: 접착제층
30: 지지 시트10: Honeycomb core
20: adhesive layer
30: support sheet
Claims (3)
상기 종이 하니콤 코어의 표면과 이면에 각각 접착제층을 개재하여 접착된 지지 시트; 를 포함하며,
상기 지지 시트는 열가소성 복합재로 구성되고,
상기 각 지지 시트의 노출된 표면에는 부직포가 인-몰딩(in-molding) 되어 접착되며,
상기 지지 시트는, 30 내지 60중량%의 니들 펀칭된 유리섬유매트 표면과 이면에 각각 40 내지 70중량%의 용융 폴리프로필렌 수지가 압출 코팅되고 경화되어 제조되는 것을 특징으로 하는 특수목적 차량용 샌드위치패널.paper honeycomb core;
A support sheet adhered to the front and back surfaces of the paper honeycomb core, respectively, through an adhesive layer; Includes,
The support sheet is composed of a thermoplastic composite,
Nonwoven fabric is in-molded and adhered to the exposed surface of each support sheet,
The support sheet is a sandwich panel for a special purpose vehicle, characterized in that it is manufactured by extrusion coating and curing 40 to 70% by weight of molten polypropylene resin on the front and back surfaces of 30 to 60% by weight of needle-punched glass fiber mat.
상기 종이 하니콤 코어의 표면과 이면에 각각 접착제층을 개재하여 접착된 지지 시트; 를 포함하며,
상기 지지 시트는 열가소성 복합재로 구성되고,
상기 각 지지 시트의 노출된 표면에는 부직포가 인-몰딩(in-molding) 되어 접착되며,
상기 지지 시트는, 40 내지 70중량%의 폴리프로필렌 수지와 30 내지 60중량%의 보강섬유를 혼합한 후, 카딩, 니들 펀칭 및 경화를 통하여 매트를 제조하고 이를 경화하여 제조하거나 또는 제직기로 직조하여 제조하는 것을 특징으로 하는 특수목적 차량용 샌드위치패널.paper honeycomb core;
A support sheet adhered to the front and back surfaces of the paper honeycomb core, respectively, through an adhesive layer; Includes,
The support sheet is composed of a thermoplastic composite,
Nonwoven fabric is in-molded and adhered to the exposed surface of each support sheet,
The support sheet is manufactured by mixing 40 to 70% by weight of polypropylene resin and 30 to 60% by weight of reinforcing fibers, then manufacturing a mat through carding, needle punching, and curing, and then curing the mat, or weaving it with a weaving machine. A sandwich panel for special purpose vehicles, characterized in that it is manufactured.
상기 접착제층은,
클로로프렌계 고무 10 내지 15%, 네오프렌계 고무 10 내지 15% 및 유기용제 70 내지 80%로 구성되는 것을 특징으로 하는 특수목적 차량용 샌드위치패널.According to claim 1 or 2,
The adhesive layer is,
A sandwich panel for special-purpose vehicles, characterized in that it consists of 10 to 15% chloroprene-based rubber, 10 to 15% neoprene-based rubber, and 70 to 80% organic solvent.
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020220042159A KR20230143367A (en) | 2022-04-05 | 2022-04-05 | Sandwich panel for special purpose vehicle |
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| KR1020220042159A KR20230143367A (en) | 2022-04-05 | 2022-04-05 | Sandwich panel for special purpose vehicle |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101918863B1 (en) | 2017-11-15 | 2018-11-14 | 공주대학교 산학협력단 | Core material of honeycomb structure and vacuum insulating panel comprising the same, manufacturing method of core material of honeycomb structure |
| KR102114835B1 (en) | 2019-07-22 | 2020-05-25 | 소공주 | Composite panel for loading structure with improved adhesion and durability and method for manufacturing the same |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101918863B1 (en) | 2017-11-15 | 2018-11-14 | 공주대학교 산학협력단 | Core material of honeycomb structure and vacuum insulating panel comprising the same, manufacturing method of core material of honeycomb structure |
| KR102114835B1 (en) | 2019-07-22 | 2020-05-25 | 소공주 | Composite panel for loading structure with improved adhesion and durability and method for manufacturing the same |
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