KR20040033351A - a bamboo composite sheet for automobile interior trim material, and method for manufacturing said sheet - Google Patents
a bamboo composite sheet for automobile interior trim material, and method for manufacturing said sheet Download PDFInfo
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- KR20040033351A KR20040033351A KR1020020062402A KR20020062402A KR20040033351A KR 20040033351 A KR20040033351 A KR 20040033351A KR 1020020062402 A KR1020020062402 A KR 1020020062402A KR 20020062402 A KR20020062402 A KR 20020062402A KR 20040033351 A KR20040033351 A KR 20040033351A
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- composite sheet
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 58
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 58
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 58
- 241001330002 Bambuseae Species 0.000 title claims abstract description 56
- 239000011425 bamboo Substances 0.000 title claims abstract description 56
- 239000002131 composite material Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 27
- 239000000463 material Substances 0.000 title abstract description 21
- 239000004743 Polypropylene Substances 0.000 claims abstract description 15
- -1 polypropylene Polymers 0.000 claims abstract description 15
- 229920001155 polypropylene Polymers 0.000 claims abstract description 14
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims abstract description 7
- 239000002994 raw material Substances 0.000 claims description 9
- 238000007731 hot pressing Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000004078 waterproofing Methods 0.000 abstract 1
- 239000000047 product Substances 0.000 description 5
- 239000002023 wood Substances 0.000 description 5
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000000748 compression moulding Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 241000894007 species Species 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 241000209128 Bambusa Species 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006353 environmental stress Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 244000269722 Thea sinensis Species 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 210000003660 reticulum Anatomy 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0011—Combinations of extrusion moulding with other shaping operations combined with compression moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/04—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles using movable moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/52—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/07—Flat, e.g. panels
- B29C48/08—Flat, e.g. panels flexible, e.g. films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
- B29K2023/04—Polymers of ethylene
- B29K2023/06—PE, i.e. polyethylene
Abstract
Description
본 발명은 복합시트 및 그 제조방법에 관한 것으로, 더욱 상세하게는, 대나무 칩과 폴리프로필렌 칩이 열압축성형되어 제조된 자동차 내장재용 대나무 복합시트 및 그 제조방법에 관한 것이다.The present invention relates to a composite sheet and a method for manufacturing the same, and more particularly, to a bamboo composite sheet for automotive interior material manufactured by heat compression molding of the bamboo chip and polypropylene chip and a method of manufacturing the same.
일반적으로 자동차의 도어트림(door trim)이나 트렁크 및 보닛 등에 내장되는 자용차용 내장재와, 건축용 내장재 등은 합성수지재의 시트, 또는 목재 등의 부산물(예를 들면 목재 칩 또는 톱밥 등)을 합성수지재 등의 바인더(binder)와 함께시트(sheet)상으로 열압축성형하여 제조한 복합시트가 주로 사용되고 있다.In general, interior materials for automobiles embedded in door trims, trunks and bonnets of automobiles, and building interior materials include synthetic resin sheets, or by-products such as wood (for example, wood chips or sawdust). Composite sheets prepared by thermocompression molding into sheets together with binders are mainly used.
이와 같이 자동차 내장재용 등으로 사용되는 합성수지 시트 또는 상기 복합시트를 제조하기 위해서는 일반적으로 멜라민수지나, PP, PVC 또는 아크릴, 페놀수지 등이 주로 사용되는데, 이러한 합성수지는 제조 등에 있어 환경공해를 일이킬 뿐만 아니라 이를 이용하여 제조된 시트는 사용후 재생활용이 어려워 사후 처리 또한 매우 곤란하여 친환경적이지 못한 문제가 있다.As described above, in order to manufacture the synthetic resin sheet or the composite sheet used for automobile interior materials, melamine resin, PP, PVC, acrylic, and phenol resin are generally used. Such synthetic resins cause environmental pollution in manufacturing. As well as killing the sheet produced using it is difficult to recycle after use and post-treatment is also very difficult, there is a problem that is not environmentally friendly.
또한, 상기 복합시트를 제조하기 위해 바인더와 함께 사용되는 목재로는 목재 칩 또는 톱밥 등의 폐기물이 재활용되어 사용되고는 있으나, 그 수요를 충족하기에는 부족하므로 재료의 확보를 위한 대규모의 벌목이 불가피하게 이루어지고 있는 실정이다. 그런데, 일반 목재의 경우, 벌목 후에 산림이 복구되기 위해서는 수십년이 소요되어야 하므로, 현재에는 목재 채취를 위한 벌목에 따라 산림이 훼손되어 가면서 그 자원이 점점 더 고갈되어 가고 있는 실정이다. 이에 따라 산소공급을 비롯한 자연의 정화능력이 현저히 저하되고 있으며, 환경파괴와 오염 등 심각한 환경문제를 야기하고 있다.In addition, as the wood used with the binder to manufacture the composite sheet, waste such as wood chips or sawdust is recycled and used, but it is insufficient to meet the demand, so large-scale logging is inevitably made to secure materials. It is losing. However, in the case of general timber, it takes several decades for the forest to be restored after felling, and as the forest is damaged due to logging for timber harvesting, its resources are gradually being exhausted. As a result, the purification of nature, including the supply of oxygen, is significantly reduced, causing serious environmental problems such as environmental destruction and pollution.
그러므로 최근에는 이와 같이 친환경적이지 못한 합성수지 시트 및 복합시트의 사용을 대체할 대체 재료의 연구가 활발하게 진행되고 있다.Therefore, in recent years, research into alternative materials to replace the use of such a non-friendly synthetic resin sheet and composite sheet has been actively conducted.
본 발명은 상기의 문제를 감안하여 창출된 것으로, 원상복구의 주기가 짧고 비교적 자원이 풍부하여 자동차 내장재를 생산하는데 원재료로 사용하기 적합한 대나무에서 생산한 칩과 여러번 재생활용이 가능한 폴리프로필렌 칩을 이용하여 자동차 내장재용 대나무 복합시트를 제조하는 방법과, 그 방법에 의해 제조된 복합시트를 제공함에 그 목적이 있다.The present invention has been made in view of the above problems, and has a short cycle of restoration and relatively abundant resources, using chips produced from bamboo suitable for use as raw materials for producing automobile interior materials and polypropylene chips that can be recycled many times. It is an object of the present invention to provide a method for producing a bamboo composite sheet for automobile interior materials, and a composite sheet produced by the method.
상기의 목적을 달성하기 위한 본 발명은, 폴리프로필렌 칩(60~40%)과 대나무 칩(40~60%)을 믹싱머신을 이용하여 완전 혼합하는 단계와; 믹싱된 원재료를 압출기를 이용하여 패널상태로 성형하는 단계와; 압출성형된 패널을 150℃~200℃의 온도에서 50~70kg/㎠의 압력으로 열프레스가공하여 시트상태로 성형하는 단계와; 열압축성형된 시트를 냉압프레스가공하여 완성하는 단계로 이루어진 제조방법 및 상기 방법에 의해 제조된 복합시트를 제공하는 것을 특징으로 한다.The present invention for achieving the above object, the step of completely mixing the polypropylene chip (60 to 40%) and bamboo chip (40 to 60%) using a mixing machine; Molding the mixed raw materials into a panel state using an extruder; Molding the extruded panel into a sheet state by hot pressing at a pressure of 50 to 70 kg / cm 2 at a temperature of 150 ° C. to 200 ° C .; It is characterized by providing a manufacturing method consisting of a step of completing the heat compression molded sheet by cold pressing process and a composite sheet produced by the method.
도 1은 대나무 칩 제조 공정 블럭도1 is a block diagram of a bamboo chip manufacturing process
도 2는 대나무 칩 제조시 대나무의 변화를 도시한 예시도2 is an exemplary view showing a change of bamboo when manufacturing bamboo chips
도 3은 본 발명에 의한 복합시트의 제조 공정 블럭도Figure 3 is a block diagram of the manufacturing process of the composite sheet according to the present invention
10 : 대나무20 : 대나무통10: bamboo 20: bamboo barrel
30 : 파쇄조각40 : 대나무 칩30: shred 40: bamboo chips
이하의 상세한 설명으로 본 발명의 구체적인 특징 및 이점은 더욱 명확해 질 것이다.The specific features and advantages of the present invention will become more apparent from the following detailed description.
본 발명에서는 자동차 내장재 등으로 사용되는 복합시트를 제조하는 원재료의 하나로 대나무를 채택하였는데, 먼저, 이 대나무에 대해 간단히 살펴보자.In the present invention, as one of the raw materials for manufacturing a composite sheet used for automobile interior materials, etc., bamboo was adopted. First, let's briefly look at this bamboo.
일반적으로 대나무는 대나무과에 속하는 식물의 총칭으로, 줄기는 땅위줄기와 땅속줄기로 이루어지며 모두 세포벽이 목질화하여 딱딱하며, 잘 분지한다. 줄기의 높이는 20m에 달하나 추운 지방에서는 3m밖에 자라지 않는 것도 있다. 대나무는 전세계에 47속 1250 여종이 있으며, 한국에는 4속 14종이 있다. 대나무의 대표종인 왕대는 중국 원산으로 한국에서 널리 식재되고 있다. 동양 여러 나라에는 대나무의 종류와 양이 풍부하고, 재료를 구하기 쉽다는 점과 가공이 용이하므로 건축재·가정용구(家庭用具)·농기구·어구·악기·완구·다도구 등 여러 방면에 이용된다.또한 대나무는 열대지방 특히 비가 많이 내리는 지대에 풍부하다. 이러한 대나무는 1시간에 2인치가 자랄 정도로 아주 빠르게 성장하는 것도 있으며, 어떤 종류는 하루에 0.5m가 자라기도 하는 것으로 알려져 있다. 대나무는 종류에 따라 3~5년 또는 10~20년에 재배되는데, 다른 목재에 비해 매우 성장을 매우 빠르게 하므로 산림을 조성하고 이를 이용하는데 매우 중요한 역할을 해 왔다. 이러한 대나무는 제지펄프(종이), 연료, 건축재 및 공예품 등의 재료 등 다양한 용도로 사용되고 있으며, 강도가 매우 높아 콘크리트 빔을 강화하는 레바(rebar)로도 쓰인다. 이와 같이 자원이 풍부하고 벌목 후 산림복원이 단기간에 이루어지며, 그 사용 용도가 매우 다양하게 쓰이고 있는 대나무는 최근들어 일반적인 목재를 대체할 대체 재료로써 그 연구가 활발하게 진행되고 있다. 그러므로 본 발명에서는 이러한 다양한 장점을 지닌 친환경적인 재료인 대나무를 복합시트를 제조하는 주원료로 선택하게 된 것이다.In general, bamboo is a general term for plants belonging to the family of bamboos, and stems are composed of land stems and subterranean stems. The height of the stem reaches 20m, but some grow only 3m in cold climates. There are 1,500 genera and 1250 species in the world, and 4 genera and 14 species in Korea. Wangdae, a representative species of bamboo, is native to China and widely planted in Korea. In many Asian countries, there are abundant kinds and quantity of bamboo, and it is easy to obtain materials and easy to process, so it is used in various fields such as building materials, household tools, farm equipment, fishing gear, musical instruments, toys, and tea utensils. Bamboo is also abundant in the tropics, especially in rainy areas. Some of these bamboos grow so fast that they grow up to two inches per hour, and some are known to grow 0.5 meters a day. Bamboo is grown in 3 ~ 5 years or 10 ~ 20 years depending on the type. Since it grows very fast compared to other woods, it has played a very important role in creating and using forests. Such bamboo is used for various purposes such as paper pulp (paper), fuel, building materials and crafts, etc., and is also used as a rebar for reinforcing concrete beams due to its high strength. As such, the resources are rich and forest restoration is carried out in a short period of time after harvesting, and bamboo, which is widely used for its purpose, has recently been actively researched as an alternative material to replace general wood. Therefore, in the present invention, bamboo, which is an environmentally friendly material having these various advantages, is selected as the main raw material for producing the composite sheet.
이와 같은 대나무를 이용하여 본 발명에 의한 복합시트를 제조하기 위해서는 우선적으로 대나무를 칩(chip)형태로 가공하여야 하는데, 그 가공 공정을 첨부된 도면, 도 1 및 도 2를 참조해 설명하면 다음과 같다.In order to manufacture the composite sheet according to the present invention using such a bamboo, it is necessary to first process the bamboo in the form of a chip (chip), the processing process will be described with reference to the accompanying drawings, FIGS. same.
먼저, 상기 도면에서 도시하는 바와 같이 기존에 사용되었던 폐대나무 및 산지에서 벌목되어 운반된 긴 대나무(10)를 일정길이 단위로 횡방향 절단하여 대나무통(20)을 만든다. 여기서 대나무(10)의 매듭부분(11)은 용이한 가공을 위해 제거하는 것이 바람직하나, 대나무통(20)에 포함되어도 무방하다.First, as shown in the figure, the long bamboo 10 felled and transported in a conventionally used waste bamboo and mountain region is cut in the transverse direction by a predetermined length unit to make a bamboo barrel 20. Here, the knot portion 11 of the bamboo 10 is preferably removed for easy processing, but may be included in the bamboo barrel 20.
그리고 다음 단계로, 전단계에서 생성된 대나무통(20)을 파쇄기를 이용하여도 2에서 도시하는 바와 같이 대나무통을 일정크기로 파쇄(고형화학물 또는 기타 재료에 충격을 가하여 다음 공정에 적합한 크기로 부수는 것)한다.In the next step, the bamboo barrel 20 generated in the previous step is crushed into a predetermined size as shown in FIG. 2 by using a crusher (impacting a solid chemical or other material to a size suitable for the next process). Crashing).
파쇄기에서 일정크기로 파쇄된 파쇄조각(30)은 다음 단계로 분쇄기에 보내져 분쇄기에서 잘게 분쇄된다. 이러한 분쇄작업은 롤(roll), 엣지런너(edgerunner), 또는 햄머밀(hammer mill)등의 분쇄기를 사용하여 압축과 충격에 의해 분쇄하되 생성된 대나무칩(40)의 길이가 5~10mm 정도, 굵기는 0.8mm 이내가 되도록 하는 것이 바람직하다.The crushed pieces 30 crushed to a certain size in the crusher are sent to the crusher in the next step and finely pulverized in the crusher. This grinding operation is pulverized by compression and impact using a grinder such as a roll, an edge runner, or a hammer mill, but the length of the produced bamboo chips 40 is about 5 to 10 mm, It is desirable that the thickness be within 0.8 mm.
분쇄가공되어 생산된 대나무 칩(40)은 마지막으로 스크린머신을 이용하여 선별하는데, 이때 미완성품은 도 1에서 도시하는 바와 같이 다시 분쇄기로 보내어 분쇄가공하며, 스크린머신으로 선별된 최종 완성품을 수거하여 패킹하는 것으로 대나무 칩의 제조공정은 완료된다. 여기서 상기 스크린머신에서 선별되는 대나무 칩(40)의 크기는 오버사이즈(over size) 20~25mesh, 언더사이즈(under size) 45~55mesh로 제한하여 그 중간 크기의 제품을 사용하는 것이 바람직하다. 이 과정에서 오버사이즈 스크린에 남는 제품은 상기한 바와 같이 다시 분쇄가공하고, 언더사이즈 스크린을 통과한 제품은 수거하여 폐기하거나, 다른 용도로 사용하는 것이 바람직하다.The bamboo chips 40 produced by grinding are finally sorted by using a screen machine. At this time, the unfinished products are sent to the grinder again as shown in FIG. 1 to grind, and the final finished products sorted by the screen machine are collected and packed. The bamboo chip manufacturing process is completed. In this case, the size of the bamboo chip 40 selected by the screen machine is preferably limited to an oversize of 20 to 25mesh and an undersize of 45 to 55mesh. In this process, the product remaining on the oversized screen is again milled as described above, and the product passing through the undersized screen is collected and disposed of or used for other purposes.
한편, 상기와 같은 방법으로 제조된 대나무 칩을 폴리프로필렌 칩과 혼합한 후 이를 성형하고 열프레싱 및 냉압프레싱가공하여 복합시트를 제조하게 되는데, 그 공정을 첨부된 도면 도 3을 참조하여 설명하면 다음과 같다.On the other hand, after mixing the bamboo chip prepared by the above method with a polypropylene chip, and then molding and hot pressing and cold pressing processing to produce a composite sheet, the process will be described with reference to the accompanying drawings, Figure 3 Same as
먼저, 폴리프로필렌(polypropylene)은 원료가 풍부하고 저렴하며, 제조법도간단할 뿐만 아니라, 비중이 매우 작아 가볍고, 강하며, 열전도성이 낮고(높은 보온성), 탄력성이 좋으며, 물을 흡수하지 않는 성질이 있고, 약품에 강하며, 열가소성을 이용한 가공이 매우 용이할 뿐만 아니라 매우 저렴하여 그 용도가 점차로 증가되고 있다. 본 발명에서는 이러한 폴리프로필렌을 칩형태로 가공하여 사용하게 된다.First of all, polypropylene is rich in raw materials, inexpensive, and easy to make. In addition, its specific gravity is very small. In addition, it is resistant to chemicals, and the processing using thermoplastic is very easy and very inexpensive, and its use is gradually increasing. In the present invention, such a polypropylene is processed into chips to be used.
가장 첫 단계로, 폴리프로필렌 칩(60~40%)과 상기한 방법으로 제조된 대나무 칩(40~60%)을 믹싱머신(mixing machine: 블렌딩 머신(blending machine) 또는 호퍼(hopper))을 이용하여 완전 혼합한다. 이때 상기 폴리프로필렌 칩은 그 크기가 길이 5~10mm, 굵기 2~5mm의 것(예를 들면 쌀알 만한 크기)을 사용하는 것이 바람직하다. 이러한 폴리프로필렌 칩은 일반적으로 상기한 크기로 제작되어 판매되는 제품을 구매하거나 주문제작을 의뢰하여 사용하면 된다.In the first step, polypropylene chips (60-40%) and bamboo chips (40-60%) prepared by the above method are mixed using a mixing machine (blending machine or hopper). Mix thoroughly. At this time, it is preferable that the polypropylene chip has a length of 5 to 10 mm and a thickness of 2 to 5 mm (for example, the size of a grain of rice). Such a polypropylene chip is generally used to purchase a product that is manufactured and sold in the size described above or to make a custom order.
이와 같이 믹싱된 원재료는 다음 단계를 통해 곧바로 압출기를 통해 패널(panel)상태로 성형·가공한다.The raw materials thus mixed are molded and processed in a panel state through an extruder immediately through the following steps.
그리고 압출성형된 패널은 다음 단계로, 150℃~250℃의 온도에서 50~70kg/㎠의 압력으로 열프레스가공하여 시트상태로 성형·가공한다. 이와 같이 압출성형된 패널을 열압축하게 되면 고온으로 인해 상기 폴리프로필렌 칩이 용융되면서 시트상태로 압축가공되게 된다.In the next step, the extruded panel is hot pressed at a pressure of 50 to 70 kg / cm 2 at a temperature of 150 ° C. to 250 ° C. to form and process the sheet. When the extruded panel is thermally compressed, the polypropylene chip is melted due to the high temperature and compressed into a sheet state.
열압축성형이 완료되면, 마지막 단계로 열압축가공된 시트를 냉압프레스가공하여 복합시트를 완성하게 되는데, 이때 열압축성형시 용융 성형된 폴리프로필렌 칩이 급냉되면서 조직이 단단하고 치밀하며 표면이 매끈한 복합시트가 완성되게 된다. 가공후 시트의 두께는 2mm~3mm이 되도록 가공하는 것이 바람직하나, 사용 목적에 따라서는 좀 더 두텁게 형성해도 무방하다.When the heat compression molding is completed, the final step is the cold press processing of the heat-compressed sheet to complete the composite sheet. At this time, the melt-molded polypropylene chip is quenched during the heat compression molding, so that the structure is hard, dense and smooth. The composite sheet is complete. It is preferable to process the sheet to have a thickness of 2 mm to 3 mm after processing, but depending on the intended use, it may be formed thicker.
상기와 같은 방법으로 제조된 본 발명에 의한 자동차 내장재용 대나무 복합시트는 매우 가볍고, 물이 침투하지 않는 방수성이 좋으며, 강도 및 휨탄성이 좋고, 성형성이 매우 좋으며, 가격이 저렴하여 자동차 내장재용 부재(dash outer, dash inner, hood silence, door pad, door trim, headliner, package tray, trunk mat etc.)로 매우 적합하다.Bamboo composite sheet for automobile interior according to the present invention manufactured by the above method is very light, good waterproofness does not penetrate the water, good strength and flexural elasticity, very good formability, low price for automotive interior It is very suitable as a member (dash outer, dash inner, hood silence, door pad, door trim, headliner, package tray, trunk mat etc.).
그리고 본 발명에 의한 복합시트를 제조하는 주재료 중 하나인 대나무 섬유를 추출하는 대나무는 상기한 바와 같이 그 성장 속도 및 환경적응력이 뛰어나므로 벌목 후 산림을 복원하는 비용 및 시간이 매우 절약되어 친환경적 소재라 할 수 있다.And bamboo extracting bamboo fiber, which is one of the main materials for manufacturing the composite sheet according to the present invention is excellent in the growth rate and environmental stress as described above, so the cost and time for restoring the forest after felling is very eco-friendly material. can do.
또한 본 발명에 의한 복합시트는 사용후 이를 폐기처분할 필요없이, 이를 잘게 절단한 후 열프레스가공하여 다른 용도의 패널 등을 생산하는 등, 재생활용할 수 있는 장점이 있다.In addition, the composite sheet according to the present invention has the advantage that it can be recycled, such as producing a panel for other uses by cutting the finely and then hot press processing without the need to discard it after use.
또한, 본 발명에 의한 자동차 내장재용 대나무 복합시트의 제조방법은 그 공정수가 매우 적고 단순하며, 이의 원재료가 되는 대나무 칩(40)의 제조공정 또한 매우 간단하므로, 생산성이 높고 대량생산화가 쉬워 품질 뿐만아니라 경제적인 면에서의 경쟁력 또한 우수한 장점이 있다.In addition, the manufacturing method of the bamboo composite sheet for automobile interior according to the present invention is very simple and the number of steps, the manufacturing process of the bamboo chip 40 to be its raw material is also very simple, high productivity, easy to mass production, easy to quality In addition, economic competitiveness is also an excellent advantage.
상기한 본 발명에 의한 복합시트는 상기한 자동차 내장재용으로 사용될 수 있을 뿐만 아니라, 그 두께와 강도를 다르게 제조함으로써 건축용 내장재 등 다른유사 용도 분야로 그 활용폭을 넓혀 사용할 수 도 있다.The composite sheet according to the present invention can be used not only for the above-described automotive interior materials, but also can be used to expand the range of application to other similar applications such as building interior materials by manufacturing the thickness and strength differently.
이상의 명백한 설명과 같이 본 발명은 매우 가볍고, 물이 침투하지 않는 방수성이 좋으며, 강도 및 휨탄성이 좋고, 성형성이 매우 좋으며, 가격이 저렴하여 자동차 내장재용 부재로 매우 적합한 복합시트 및 이를 제조하는 방법을 제공해 주는 효과가 있다.As described above, the present invention is very light, has good water resistance, does not penetrate the water, has good strength and flexural elasticity, very good formability, and is inexpensive, so that the composite sheet suitable for automobile interior materials and manufacturing the same It has the effect of providing a way.
그리고 본 발명은 환경적응력 및 그 성장속도가 매우 빠르고 풍부한 자원량을 보유하고 있는 대나무를 활용함으로써 매우 친환경적이며, 사용 후에도 몇차례의 재생가공을 통한 다른 용도로의 재활용이 가능한 유용한 복합시트 및 이를 제조하는 방법을 제공해 주는 효과가 있다.In addition, the present invention is very environmentally friendly by utilizing the environmental stress and its growth rate is very fast and has abundant resources, it is very eco-friendly, and can be recycled to other uses through recycling several times after use useful composite sheet and to manufacture the same It has the effect of providing a way.
또한 본 발명은 자용차 내장재용 복합시트를 제조하는 원재료 중 하나인 대나무 칩을 생산하는 공정이 매우 쉽고 단순하며, 복합시트를 생산하는 공정 또한 단순하므로 저렴한 비용으로의 대량생산이 가능하여 경제적인 경쟁력이 매우 놓은 효과가 있다.In addition, the present invention is very easy and simple to produce a bamboo chip, which is one of the raw materials for manufacturing a composite sheet for automobile interior materials, and the process of producing a composite sheet is also simple, so that mass production at low cost is possible and economical competitiveness This has a very sewn effect.
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| US7836655B2 (en) | 2006-09-25 | 2010-11-23 | Teragren Llc | Bamboo flooring planks with glueless locking system |
| CN103128808A (en) * | 2012-11-29 | 2013-06-05 | 黄成存 | Full bamboo plywood with novel structure and manufacturing method |
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|---|---|---|---|---|
| KR100186945B1 (en) * | 1996-02-08 | 1999-05-15 | 히데히로 가시와기 | Manufacturing method of the recycling material from the waste wood and plastic film |
| JP2000086775A (en) * | 1998-07-15 | 2000-03-28 | Yutaka Imaizumi | Molded product having antimicrobial activity |
| JP2000210910A (en) * | 1999-01-22 | 2000-08-02 | Hideto Hashimoto | Automotive interior trim base material |
| JP2001071310A (en) * | 1999-09-09 | 2001-03-21 | Koji Hayafune | Sheet member for automotive interior trim part |
| KR200224710Y1 (en) * | 2000-12-01 | 2001-05-15 | 한일이화주식회사 | The felt of thermo plasticity for an automobile's interior decoration machine parts |
| KR20030072831A (en) * | 2002-03-07 | 2003-09-19 | 이정헌 | composite sheet for automobile interior trim material, and method for manufacturing said sheet |
-
2002
- 2002-10-14 KR KR1020020062402A patent/KR20040033351A/en not_active Application Discontinuation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100186945B1 (en) * | 1996-02-08 | 1999-05-15 | 히데히로 가시와기 | Manufacturing method of the recycling material from the waste wood and plastic film |
| JP2000086775A (en) * | 1998-07-15 | 2000-03-28 | Yutaka Imaizumi | Molded product having antimicrobial activity |
| JP2000210910A (en) * | 1999-01-22 | 2000-08-02 | Hideto Hashimoto | Automotive interior trim base material |
| JP2001071310A (en) * | 1999-09-09 | 2001-03-21 | Koji Hayafune | Sheet member for automotive interior trim part |
| KR200224710Y1 (en) * | 2000-12-01 | 2001-05-15 | 한일이화주식회사 | The felt of thermo plasticity for an automobile's interior decoration machine parts |
| KR20030072831A (en) * | 2002-03-07 | 2003-09-19 | 이정헌 | composite sheet for automobile interior trim material, and method for manufacturing said sheet |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7836655B2 (en) | 2006-09-25 | 2010-11-23 | Teragren Llc | Bamboo flooring planks with glueless locking system |
| CN103128808A (en) * | 2012-11-29 | 2013-06-05 | 黄成存 | Full bamboo plywood with novel structure and manufacturing method |
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