KR100288605B1 - Method of production of chip molded product for automobile using waste polyurethane resin - Google Patents
Method of production of chip molded product for automobile using waste polyurethane resin Download PDFInfo
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- KR100288605B1 KR100288605B1 KR1019980046554A KR19980046554A KR100288605B1 KR 100288605 B1 KR100288605 B1 KR 100288605B1 KR 1019980046554 A KR1019980046554 A KR 1019980046554A KR 19980046554 A KR19980046554 A KR 19980046554A KR 100288605 B1 KR100288605 B1 KR 100288605B1
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- Prior art keywords
- polyurethane
- chip
- automobile
- weight
- density
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 239000002699 waste material Substances 0.000 title claims description 19
- 229920005749 polyurethane resin Polymers 0.000 title abstract description 3
- 229920002635 polyurethane Polymers 0.000 claims abstract description 35
- 239000004814 polyurethane Substances 0.000 claims abstract description 35
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000001070 adhesive effect Effects 0.000 claims abstract description 20
- 229920005830 Polyurethane Foam Polymers 0.000 claims abstract description 14
- 239000011496 polyurethane foam Substances 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 15
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 6
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 3
- 150000003077 polyols Chemical class 0.000 claims description 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 claims description 2
- ZGEGCLOFRBLKSE-UHFFFAOYSA-N methylene hexane Natural products CCCCCC=C ZGEGCLOFRBLKSE-UHFFFAOYSA-N 0.000 claims description 2
- 239000003960 organic solvent Substances 0.000 claims description 2
- 239000004129 EU approved improving agent Substances 0.000 claims 1
- 238000007730 finishing process Methods 0.000 claims 1
- 238000001746 injection moulding Methods 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 11
- 239000012212 insulator Substances 0.000 abstract description 8
- 238000002156 mixing Methods 0.000 abstract description 8
- 238000000227 grinding Methods 0.000 abstract description 3
- 239000004744 fabric Substances 0.000 abstract description 2
- 239000013502 plastic waste Substances 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 6
- 238000000748 compression moulding Methods 0.000 description 6
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 5
- 239000006260 foam Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011358 absorbing material Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 4
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 229920005992 thermoplastic resin Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 235000021355 Stearic acid Nutrition 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- UJSSNDKVUQJEGE-UHFFFAOYSA-N dichloro propyl phosphate Chemical compound CCCOP(=O)(OCl)OCl UJSSNDKVUQJEGE-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920001821 foam rubber Polymers 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 230000003313 weakening effect Effects 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
- 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
- B29B9/00—Making granules
- B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
-
- 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
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
-
- 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
- B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/56—Reuse, recycling or recovery technologies of vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
Description
본 발명은 자동차등의 시트나 소파의 커버지로 사용되는 인조 피혁, 발포성형품등을 칩형태로 분쇄후 이들을 크로스, 폴리우레탄 스폰지, 폴리우레탄 발포포옴으로 구분하여 적절히 배합한 것에 표면을 접착성 물질로 도포후 고온, 고압으로 성형 제조한 칩몰드 성형품의 제조방법에 관한 것이다.According to the present invention, the artificial leather, foamed molded article, etc., which are used as a cover sheet of a car or a sofa, are crushed into chips, and then divided into cross, polyurethane sponge, polyurethane foam, and appropriately blended with an adhesive material. The present invention relates to a method for producing a chip mold molded article formed by high temperature and high pressure after coating.
자동차의 의자에 사용되는 시트나 소파등의 생산과정이나 기타 공정에서 발생되는 스크랩 혹은 폐자동차등에서 배출되는 발포포옴등의 폐자재를 이용하여 다양한 제품을 생산하거나 재활용하기 위하여 많은 노력이 가해지고 있다.Many efforts are being made to produce or recycle a variety of products using waste materials such as foams discharged from scrap cars or scrap cars generated in the production process or other processes of seats or sofas used in automobile chairs.
예를 들어 자동차 시트를 제조하는 과정에 사용되는 여러 가지 폐자재중 크로스, 스폰지류가 대량 발생하고 있으며 이중 폴리우레탄 스폰지등은 제품의 완성후 상당량이 스크랩으로 발생되면서도 극히 일부가 원료 폴리우레탄과 혼용하여 재활용될 뿐 대부분 폐기처분되어 오고 있다. 또한 폴리우레탄 스폰지의 경우에도 고발포 제품이기에 다른 용도로도 사용이 어려워 역시 폐기 처분되어 오고 있다. 그 외에도 폐자동차나 여러 가지 가구제품류에서 발생하는 상기한 폐자재류도 역시 주로 폴리우레탄계통이고 발포제품이기에 다른 용도로 사용되지 못하고 폴리우레탄의 일부만이 재생용으로 이용되어 인조목이나 기타 용도로 부분적인 이용이 가능한 것이다.For example, a large amount of cross and sponges are generated among various waste materials used in the manufacturing process of automobile seats. Among them, polyurethane sponges are mixed with raw material polyurethane even though some of them are generated as scrap after completion of the product. Most of them have been disposed of. Polyurethane sponges are also highly foamed products, which are difficult to use for other purposes and have been disposed of. In addition, the above-mentioned waste materials generated from waste cars and various furniture products are also mainly polyurethane-based and foamed products, and thus cannot be used for other purposes. It is possible to use it.
폴리우레탄 스폰지 혹은 기타 폴리우레탄 제품중 폴리우레탄을 재생하기 위하여 분쇄 처리후 톨루엔과 같은 용매에 용해하여 이것에 스테아린산, 프로필렌에틸렌 트리올 디클로로 프로필 포스페이트등과 같은 공중합체와 혼합하여 칩형태로 만들어 폐우레탄을 재활용하는 방법이 제공되어 있다(한국 특허공개 94－26115호). 그리고 폐우레탄을 10mm이하로 분쇄하여 폴리올, 폴리 이소시아네이트등으로 용해 후 노즐을 통하여 미세하게 분쇄한 다음 폴리우레탄 제조시 첨가제로 재활용하는 방법이 제공되고 있다(한국 특허공개 94－25733호).To reclaim polyurethane in polyurethane sponge or other polyurethane products, it is dissolved in a solvent such as toluene and then mixed with a copolymer such as stearic acid, propylene ethylene triol dichloropropyl phosphate, and then made into chips to waste polyurethane. There is provided a method for recycling the waste (Korean Patent Publication No. 94-26115). In addition, a method of pulverizing waste urethane to 10 mm or less is dissolved in polyol, poly isocyanate, etc., and then finely pulverized through a nozzle, and then recycled as an additive when preparing polyurethane (Korean Patent Publication No. 94-25733).
그러나 이들 방법은 모두 폴리우레탄을 재생하여 폴리우레탄 제품의 용도에 한정하여 사용되는 것이지 크로스나 여타 물질과 혼합하여 사용하는 방법은 전혀 제공되지 못하고 있으며 특히나 다양한 환경하에 악조건을 견디어야 하는 자동차용 인슈레이터에 사용할 수 있는 예는 아직 발견되지 못하고 있는 것이다. 더구나 폴리우레탄을 용해하기 위한 용매의 비용이나 휘발성에 따른 폭발가능성등에 따라 생산성의 면에서 경제적이지 못한 단점이 있는 것이다. 특히 자동차 시트와 같이 크로스와 고발포 스폰지가 혼용되는 경우에는 서로 다른 화학적 성질을 가진 물질들이 혼재하여 있어 거의 재생되지 못하고 폐기되어 오고 있는 것이다.However, all of these methods are used to recycle polyurethane and are limited to the purpose of polyurethane products. However, there is no method of mixing with cross or other materials, and especially automobile insulators that must withstand adverse conditions under various environments. An example that can be used for has yet to be found. In addition, there is a disadvantage in that it is not economical in terms of productivity, depending on the cost of the solvent for dissolving the polyurethane or explosive potential due to volatility. In particular, when a cross and a high-foaming sponge, such as a car seat, are mixed, materials having different chemical properties are mixed and are almost never recycled and discarded.
일본공개특평7－68548은 청구항1에 기재하듯이 "연질우레탄을 주성분으로하는 세립도의 분쇄물을 성형기에 거의 균등하게 충진하고, 상기 성형기로 연질우레탄폼의 분쇄물이 유동화하는 온도압력조건으로 가열가압하여 성형품을 얻는 연질우레탄폼의 리사이클링방법"을 개시하고 있다.Japanese Patent Application Laid-Open No. Hei 7-68548 discloses, as described in claim 1, that " a fine-grained pulverized product composed mainly of soft urethane is filled almost uniformly in the molding machine, and the molding machine is subjected to temperature pressure conditions in which the pulverized product of the soft urethane foam is fluidized. The recycling method of the flexible urethane foam which obtains a molded article by heating and pressurizing "is disclosed.
여기서 피가공물을 140내지 200도로 가열하고 1내지 400Kg/cm2의 압력을 가한다고 하는데 그 원리는 결국 피가공물이 열에 의하여 용융되도록 하여 압축하므로서 자신들끼리 압축되어져 일정한 금형의 형상대로 물건을 생산한다는 원리이다.Here, the workpiece is heated to 140 to 200 degrees and a pressure of 1 to 400Kg / cm 2 is applied. The principle is that the workpieces are compressed by melting them by heat to compress them, thereby producing objects in the shape of a certain mold. to be.
이같은 열가소성수지를 압축가열하여 가공처리한다는 것은 이미 널리 공지된 기술이며, 폴리우레탄이 아니라 하여도 다양한 열가소성수지를 이와같이 가공처리하고 있으나 이들을 엄격한 품질기준이 적용되는 자동차용 부품으로는 전혀 사용하지 못하고 다른 재질로 사용하는데 머물고 있다.It is already well known technique to process such thermoplastic resins by compression heating, and various thermoplastic resins are processed in this way even if they are not polyurethane, but they are not used at all as automotive parts to which strict quality standards are applied. Staying in use as a material.
또한 일본공개특허평7－88865호는 청구항 1에 기재하듯이 "표피재 및 유리섬유를 함유하는 폐폴리우레탄제품을 분쇄하여 세편으로하는 분쇄공정과,In addition, Japanese Patent Laid-Open No. 7-88865 discloses a grinding process of crushing waste polyurethane products containing skin material and glass fibers into three pieces,
전기 세편에 유리장섬유를 가하는 동시에 이들에 물과 열에 의하여 반응하는 이소시아네이트계접합제를 소정량의 물과 함께 혼합하여 괴상물을 얻는 공정과,Adding a glass filament to the three pieces of electricity and mixing the isocyanate-based binder reacting with water and heat with a predetermined amount of water to obtain a mass;
상기한 괴상물을 소정의 성형틀에 도입하여 상기한 이소시아네이트계접합제가 반응하기에 충분한 열과동시에 압축성형하는 공정을 포함하는 것을 특징으로 하는 폐폴리우레탄제품의 압축성형방법"을 제시하고 동 2항에서는 세편에 혼입되는 유리장섬유의 분량이 중량비로 10내지 40%, 3항에서는 예비압축성형공정을 포함하는 것을, 4항에서는 소망의 표피재 및 필요한 안팍재와동시에 압축하고, 5항에서는 흡음재를 혼합하는 것을 청구하고 있으며, 여기서 흡음재란 탄산칼슘과 같은 것을 사용하고 있는 것이다. 이렇게 제조된 재생품에 대한 사용은 합판대용품 정도에 머무르는 것으로 보인다. 즉, 자동차천정재에서 나오는 폐폴리우레탄을 분쇄하여 잘게 자른다음 이소시아네이트계접착제를 도포하여 압축성형한다는 것이며, 그외의 다른 특징은 전혀 찾아보기 어려운 것으로, 사용용도도 자동차부품용으로는 전혀 사용할 수 없는 것이다.And a step of introducing the above-mentioned mass into a predetermined mold to compress the molding at the same time with sufficient heat for the isocyanate-based binder to react. The amount of glass filaments incorporated into the three pieces is 10 to 40% by weight, and in section 3, a precompression molding process is included. In section 4, the skin is compressed simultaneously with the desired skin and necessary inner packs. In this case, the sound absorbing material is used as the same as calcium carbonate, and the use of the regenerated product seems to remain at the level of plywood substitute, that is, by crushing the waste polyurethane from the car ceiling material It is crushed and then compressed by molding an isocyanate-based adhesive. More difficult to find, use, applications would not have any use for auto parts.
일본공개평7－205169호는 청구항 1에 기재하듯이 주로 자동차나 건축물로부터 발생하는 폐기물을 잘게 분쇄하여 이 분쇄물을 수중에 분산시켜 이 분산액에 5∼50중량%의 바인더성분을 혼합하여 균일분산후에 탈수, 가열하여 임의의 성형틀에서 가열가압 성형하는 성형방음재의 제조방법"을 청구하고, 동 2항에서는 "분쇄물중에 합성수지성, 식물성, 동물성 및 광물성의 불연속섬유성분을 함유하며" 동 3항에서는 "합성수지폼재세편을 함유하며" 동 4항에서는 "분쇄물중에 염화비닐, 초산비닐, 에틸렌초산비닐공중합체, 역청질물등의 합성수지시트재세편을 함유하며" 동 5항에서는 "바인더로 열가소성섬유, 열가소성수지, 열경화성수지중에서 선발되는 적어도 1종류를 사용하는" 것으로 청구하고 있다.Japanese Patent Application Laid-Open No. 7-205169 discloses uniformly dispersing finely pulverized wastes generated from automobiles or buildings, dispersing the pulverized product in water, and mixing 5-50 wt% of binder components in the dispersion. Claims are made for a method for producing a molded soundproofing material which is dewatered and heated and heated and press-molded in an arbitrary molding mold. In the same paragraph 2, "the pulverized material contains discontinuous fiber components of synthetic resin, vegetable, animal and mineral." The term "contains a synthetic resin foam piece", and the item 4 "contains a synthetic resin sheet material such as vinyl chloride, vinyl acetate, ethylene vinyl acetate copolymer, bitumen, etc." At least one selected from thermoplastic fibers, thermoplastic resins and thermosetting resins.
즉, 자동차나 건축폐기물에서 발생하는 것을 사용하되 수중분산후 탈수후 접착제를 가한 다음 압축처리한다는 점은 상기한 일본의 특허들과 다를 바가 없으며, 단지 접착제를 다양하게 사용한다는 것과 섬유성분으로 여러 가지 동식물, 광물성도 채용한다는 점입니다만 이역시 일반적인 제조방법의 한가지이다.That is, it is different from the Japanese patents mentioned above that it is used in car or building waste, but it is dispersed in water, dehydrated, and then compressed. It also employs plants and minerals, but this is one of the common manufacturing methods.
즉, 일본공개특허는 자동차용 인슐레이터, 대쉬보드등에 사용되어져 나온 폐기물을 재활용하여 다른 흡음재로 재사용한다는 것이지 이것이 다시 자동차용 인슐레이터와 같은 부품으로 사용한다는 것은 전혀 시도조차하지못하고 있는 것이다.In other words, the Japanese patent discloses that wastes used in automobile insulators, dashboards, etc. are recycled and reused as other sound absorbing materials.
위에 이미 언급하듯이 자동차용 부품으로 사용하기 위하여 필요한 밀도, 인장강도, 인열강도, 연소성, 내열사이클성, 내열충격성, 난연성, 흡음성시험(제8면내지 11면에 기재됨)의 기준에 맞추기 위한 폴리우레탄폼과 스폰지의 적절한 배합과 가공의 기술은 언뜻 아주 사소한 듯이 보이지만 이들 재질의 절묘한 배합으로 단순한 흡음재에 지나지 않게 사용되어버릴 소재를 다시 재생하여 자동차와 같이 엄격한 품질기준이 요구되는 곳에 사용될 수 있는 기술은 소개되지못하고 있어 단순한 방음재, 흡음재의 사용정도에 머물고 있다.As mentioned above, meet the standards of density, tensile strength, tear strength, combustibility, heat cycle resistance, thermal shock resistance, flame retardancy, and sound absorption test (described on pages 8 to 11) for use as automotive parts. The technology of proper mixing and processing of polyurethane foam and sponge for the first time seems very trivial, but the exquisite combination of these materials is just a sound absorbing material, and it can be used in places where strict quality standards such as automobiles are required by regenerating materials. There is no technology introduced, staying at the level of simple soundproofing and sound absorbing materials.
본 발명은 자동차 시트나 가구제조시 혹은 폐기시 발생되는 스크랩을 분쇄하여 크로스, 폴리우레탄 스폰지, 폴리우레탄 발포포옴을 적절히 배합후 액상접착제를 일정량 배합하여 자동차의 형태대로 성형한 금형에 일정한 두께로 배치한 다음 고온고압의 조건하에 압축성형하여 목적한 자동차의 하부구조와 대응되는 칩몰드성형품을 제공하여 폐기되어 오던 스크랩이나 기타 폐자재를 적극적으로 재활용할 수 있게 하면서 생산원가의 저감, 자원의 재활용등이 가능토록 하였다.According to the present invention, the scrap generated during the manufacture or disposal of automobile seats or furniture is pulverized, and the cross, polyurethane sponge, and polyurethane foam are appropriately mixed, and then a certain amount of the liquid adhesive is added to the mold formed in the shape of the vehicle. Then, by compression molding under high temperature and high pressure conditions, chip mold molded products corresponding to the substructure of the intended vehicle can be provided to actively recycle scraps and other waste materials, and to reduce production costs and recycle resources. This was made possible.
본 발명은 자동차의 폐차시 혹은 자동차 시트의 제작이나 소파와 같은 가구 제작시 발생되는 스크랩을 직경 3∼10mm의 크기로 분쇄하여 칩형태로 만든 다음 블로우 송풍방법에 의하여 저장하면서 직경 3mm보다 작은 크로스나 스크랩을 집진제거하는 공정,According to the present invention, a scrap generated during scrapping of an automobile or when manufacturing a car seat or a furniture such as a sofa is crushed to a size of 3 to 10 mm in diameter to form a chip, and then stored by a blow blowing method. Dust-collecting process,
상기한 칩형태의 분쇄물을 전체중량을 기준으로 크로스 5∼20%, 폴리우레탄 스폰지 40~60%, 폴리우레탄 발포포옴 5∼15%의 비율로 구성되도록 균일하게 배합한 다음 액상접착제를 10∼30%가 되도록 균질 분산하여 칩들의 표면에 고르게 도포하는 배합공정,The chipped ground product is uniformly blended in a ratio of 5 to 20% cross, 40 to 60% polyurethane sponge and 5 to 15% polyurethane foam based on the total weight, and then 10 to 10 liquid adhesives. Compounding process to evenly disperse to 30% and apply evenly to the surface of the chip,
상기한 배합이 완료된 것을 목적한 자동차의 하부 구조와 대응되게 형성한 금형에 일정두께로 배치하여 놓은 다음 섭씨 온도 120 ∼ 140℃, 압력 70 내지 80Kg/cm2의 압력으로 압축성형하는 공정,Placing the mold at a predetermined thickness in a mold formed to correspond to the undercarriage of the intended vehicle to be completed, and then compression molding at a pressure of 120 to 140 ° C. and a pressure of 70 to 80 Kg / cm 2 ,
압축성형된 제품을 섭씨온도 110내지 130도의 온도를 갖는 건조 오븐에서 약 1시간 건조 처리하여 열수축을 유도하고 양생하여 안정화하는 공정,A process of drying the compressed molded product in a drying oven having a temperature of 110 to 130 degrees Celsius for about 1 hour to induce heat shrinkage and to cure and stabilize it;
건조 성형된 제품을 이용하여 트리밍 처리와 피어스 처리하여 최종적인 형태로 마감처리하는 공정으로 구성되어 있다.It consists of a process of trimming and piercing the final form using a dry molded product.
본 발명의 분쇄 공정에서 분쇄물의 이송은 미세한 먼지를 흡착 제거할 수 있도록 집진기를 설치하여 주며 이는 미세한 먼지류가 과도하게 포함되어 있는 경우 이들 미세입자의 표면적이 크므로 접착제의 표면도포 효과를 낮추어 접착 성능이 약화되지 않도록 하기 위한 것으로서 분쇄소재는 엉킴방지, 균일한 혼합, 건조를 위하여 임펠러를 장치하여 로터리 저속회전을 시켜주며 발생된 먼지는 백필터와 같은 필터장치를 사용하여 수집제거한다.In the grinding process of the present invention, the transfer of the pulverized product is provided with a dust collector so as to adsorb and remove the fine dust. When the fine dust is excessively contained, the surface area of these fine particles is large, thereby reducing the surface coating effect of the adhesive. To prevent the performance from being impaired, the crushed material is rotated at a low speed by using an impeller to prevent tangling, uniform mixing, and drying. The generated dust is collected and removed by using a filter device such as a bag filter.
본 발명에서 사용한 크로스(cloth)란 주로 섬유와 폴리우레탄수지를 적층처리하여 형성한 자동차 시트나 소파등에 적층되어 있는 섬유로서 본 발명의 방법에 의하여 분쇄하면 대부분의 직조 형태가 파괴되어 부직사 형태로 되므로 이것들이 접착제와 함께 칩상의 발포폴리우레탄들을 포집하거나 크로스링킹하여 강도를 향상시키는 것이며, 사용량은 20%보다 많게 사용하는 경우 제품의 경도가 상승하여 원하는 탄성을 얻을 수 없으며, 5%보다 적게 사용하면 경도가 너무 약하게 되어 원하는 강도를 발휘하지 못하게 하며 더나아가서 액상 접착제의 사용량도 증가하여 원가가 상승되는 문제가 있는 것이다.The cloth used in the present invention is a fiber which is mainly laminated on a car seat or a sofa formed by laminating fibers and polyurethane resins, and when crushed by the method of the present invention, most of the woven forms are destroyed to form a nonwoven fabric. Therefore, they are used to improve the strength by collecting or crosslinking foamed polyurethane on chip with adhesive. If the amount used is more than 20%, the hardness of the product is increased to obtain the desired elasticity, and less than 5% is used. If the hardness is too weak to prevent the desired strength and further increase the amount of use of the liquid adhesive, there is a problem that the cost is increased.
본 발명에서 폴리우레탄 스폰지는 밀도 0.018g/cm3∼0.020g/cm3인 것을 주로 사용하여 10%보다 많이 사용하는 경우 성형시 복원력에 의한 제품균일도 저하 및 미성형이 부분이 발생하여 부분적인 형상붕괴현상이 발생될 수 있다.In the present invention, when the polyurethane sponge is used more than 10% mainly using a density of 0.018g / cm 3 ~ 0.020g / cm 3 The product uniformity decreases due to the restoring force during molding and the unformed part is generated, the partial shape Collapse may occur.
본 발명에서 폴리우레탄 발포포옴은 자동차의 의자와 같은 내부 충진제로 주로 사용된 스크랩으로 밀도 0.035∼0.045g/cm3인 것이 적당하며, 10%보다 많이 사용하는 경우 부분적으로 이들 발포포옴이 있는 부분의 형상이 강도가 떨어지므로 이러한 부분이 증가하면서 전체적이 강도의 약화현상이 심화되며, 10%보다 적게 사용할 경우에는 강도는 증가하나 제품이 갖추어야할 탄성이나 흡음성, 제진성이 좋지않게 되어 버리는 단점이 있는 것이다.Polyurethane foam in the present invention is a scrap mainly used as an internal filler, such as a car chair is suitable density of 0.035 ~ 0.045g / cm 3 , when using more than 10% of the part having these foams partially As the shape decreases in strength, as the portion increases, the overall weakening of the strength intensifies, and when it is used less than 10%, the strength increases, but the elasticity, sound absorption, and vibration damping properties of the product become poor. will be.
본 발명에서 사용되는 액상 접착제는 메틸디이소시아네이트와 폴리올의 혼합물로 구성된 폴리우레탄 프리 폴리머 50∼60%, 메틸렌 클로라이드와 헥산의 혼합물로 구성된 유기용매가 40∼50%로 구성된 것이 적당하다. 접착제의 첨가량은 10%보다 적게 사용하는 경우 칩간의 결속력이 약화되어 목적한 제품의 형태를 유지하기 어려우며 강도나 기타 여러 가지 물성을 확보할 수 없으며 30%보다 많이 사용한 경우 제품의 접착강도가 너무 높아져 제품의 탄성이나 신율이 나쁘게 되며 흡음성도 약화시키고 필요이상의 원가상승요인이 되는 것이다.The liquid adhesive used in the present invention is suitably composed of 50 to 60% of a polyurethane prepolymer composed of a mixture of methyl diisocyanate and polyol and 40 to 50% of an organic solvent composed of a mixture of methylene chloride and hexane. If the amount of adhesive added is less than 10%, it is difficult to maintain the shape of the desired product because the cohesion between chips is weakened, and the strength or other physical properties cannot be secured. If it is used more than 30%, the adhesive strength of the product becomes too high. The elasticity and elongation of the product becomes bad, the sound absorption is also weakened, and the cost increase factor is more than necessary.
본 발명에서 성형압축은 금형내부의 온도를 120℃이하로 하고, 압축압력은 약 70Kg/cm2이하인 경우 소재간 접착이 불완전하여 성형품이 변형되거나 내구성이 약화되며, 내부 온도를 140℃이상 압축압력을 80Kg/cm2이상으로 하는 경우에는 칩간 결속력이 강화되는 장점도 있으나 자동차에서 필요로 하는 탄성과 신율 및 흡음성이 상실되어 바람직하지 못한 결과를 얻게 되는 것이다. 본 발명에서 사용하는 금형이란 자동차의 종류에 따라 다양하게 구성되는 하부패널의 형태대로 성형한 것으로 상하부 금형이 서로 만나면서 내부 공간에 본 발명이 조성한 스크랩과 접착제의 혼합물을 배치하여 가열 및 가압이 가능토록 구성한 것이다.In the present invention, the molding compression is a temperature of less than 120 ℃ within the mold, the compression pressure is less than about 70Kg / cm 2 incomplete adhesion between the materials to deform or weaken the durability, the internal temperature of 140 ℃ or more compression pressure When 80 Kg / cm 2 or more has the advantage that the bond strength between the chips is strengthened, but the elasticity, elongation and sound absorption required in the car is lost, which will result in undesirable results. The mold used in the present invention is molded in the form of a lower panel which is variously configured according to the type of automobile. The upper and lower molds meet each other, and the mixture of the scrap and the adhesive composition of the present invention is disposed in the inner space so that heating and pressurization are possible. It is made up.
본 발명에서 압축성형시 압축비는 최초에 수동으로 접착제가 도포된 칩상 분쇄물을 금형에 배치후 약 1/4 내지 1/5의 비로 압축하여 준다. 압축율을 높이면 강도는 향상되나 원하는 탄성, 흡음성, 제진성등은 나빠지게 된다.In the present invention, the compression ratio in the compression molding is first compressed to a ratio of about 1/4 to 1/5 after placing the chip-like pulverized by manually applying the adhesive to the mold. Increasing the compressibility increases the strength, but the desired elasticity, sound absorption, vibration damping, and the like worsens.
[제조 실시예 1]Production Example 1
자동차 시트제조시 발생된 스크랩 70kg을 6날 회전 4날 고정식의 분쇄기에서 평균입경 3내지 10 mm가 되도록 분쇄하여 준다. 분쇄된 것은 블로우 송풍기를 이용하여 저장탱크 상부로 이송하여 주며 이때에 중간에 별도의 필터를 설치하여 입경 3mm이하의 것은 수집 제거하여 준다. 이들 스크랩분쇄물에서 크로스 20kg, 폴리우레탄스폰지 40Kg, 폴리우레탄 발포포옴 10Kg의 비율이 되도록 적절히 배합하여 준다음 점도가 낮으면서 접착력이 우수한 폴리우레탄 접착제 30Kg을 미세하게 분사하면서 다시 혼합하여 칩의 표면에 고르게 접착제가 도포하도록 한다. 도포가 완료된 것을 기아자동차 카니발의 하부판넬용으로 형성한 금형에 약 110mm의 두께로 배치한 다음 120 내지 140℃의 온도와 압력 70내지 80Kg/cm2로 3내지 5분간 압축 성형하였다(평균두께 약 20mm). 성형된 것을 110 내지 130℃의 온도로 유지되는 오븐에 넣고 약 1시간 건조 양생하였다. 건조 양생이 된 것은 수분제거와 열세팅후 트림기를 이용하여 칩몰드 성형품을 완성하였다.70kg of scrap generated during the manufacture of automobile seats are ground to an average particle diameter of 3 to 10 mm in a 6 blade rotary 4 blade fixed grinder. The pulverized product is transferred to the upper part of the storage tank by using a blow blower. At this time, a separate filter is installed in the middle to collect and remove the particle diameter of 3mm or less. These scraps are properly blended in a ratio of 20 kg of cross, 40 kg of polyurethane sponge, and 10 kg of polyurethane foam, and then mixed again with a fine spray of 30 kg of polyurethane adhesive having low viscosity and excellent adhesion. Apply the adhesive evenly. After the application was completed, the mold was formed at a thickness of about 110 mm in a mold formed for the lower panel of the Kia Carnival, and then compression molded for 3 to 5 minutes at a temperature of 120 to 140 ° C. and a pressure of 70 to 80 kg / cm 2 (average thickness of about 20mm). The molded product was placed in an oven maintained at a temperature of 110 to 130 ° C. and dried for about 1 hour. The dried curing was completed by molding the chip mold using a trimmer after removing water and heat setting.
[제조 실시예2]Preparation Example 2
상기한 실시예 1과 동일한 방법으로 하되 크로스 10Kg, 폴리우레탄 50Kg, 폴리우레탄 발포포옴 10Kg을 사용하였으며 폴리우레탄 액상 접착제 20Kg을 미스트상으로 분무하면서 상기한 분쇄물과 고르게 혼합하였다. 혼합이 완료된 것을 기아의 카니발 자동차 하부 패널의 형태대로 형성한 금형에 약 100mm의 두께로 배치하여 놓고 120 내지 140℃, 압력 70 내지 80Kg/cm2으로 약 3 내지 5분가 압축성형하여 주었다(두께 약 20mm). 압축 성형이 완료된 것을 110 내지 130도의 온도로 유지된 오븐에 넣고 건조 양생하여 목적한 칩몰드 성형품을 제조하였다.In the same manner as in Example 1 described above, 10 Kg of cross, 50 Kg of polyurethane, 10 Kg of polyurethane foam was used, and 20 Kg of polyurethane liquid adhesive was mixed evenly with the pulverized product while spraying onto the mist. After the mixing was completed, the mold was formed in the form of Kia's carnival car lower panel and placed at a thickness of about 100 mm, and compression molding was performed at 120 to 140 ° C. and a pressure of 70 to 80 kg / cm 2 for about 3 to 5 minutes. 20mm). The compression molding is completed, put in an oven maintained at a temperature of 110 to 130 degrees and dried to prepare a target chip mold molded article.
[제조 실시예 3]Production Example 3
크로스 5kg, 폴리우레탄 55kg, 폴리우레탄 발포포옴 10Kg을 사용하고 폴리우레탄 접착제는 15Kg을 사용한 것 이외에는 상기한 실시예 1과 동일한 방법으로 칩몰드 성형품을 얻었다.A chip mold molded article was obtained in the same manner as in Example 1, except that 5 kg of cross, 55 kg of polyurethane, and 10 Kg of polyurethane foam were used, and 15 Kg of polyurethane adhesive was used.
[제조 실시예 4]Production Example 4
실시예 1과 동일한 방법을 사용하며 크로스 5Kg, 우레탄 스폰지 60Kg, 폴리우레탄 발포포옴 10Kg을 배합하여 사용하였으되 폴리우레탄 접착제는 10Kg을 사용한 것이외에는 실시예 1과 동일한 방법에 의하여 제조하였다.The same method as in Example 1 was used and 5 Kg of cross, 60 Kg of urethane sponge, and 10 Kg of polyurethane foam were used in combination, except that 10 Kg of polyurethane adhesive was prepared in the same manner as in Example 1.
이상의 비교표에 나타나듯이 본 발명의 조성방법에 따른 제품은 폴리우레탄 발포포옴만의 사용시 혹은 레진 벨트 사용시와 비교하여 인장강도, 신율이As shown in the comparison table above, the product according to the composition method of the present invention has a higher tensile strength and elongation than when using only polyurethane foam or when using a resin belt.
향상되었으며 기타 신율, 연소성, 내열사이클성도 우수한 특성을 나타내는 것이다.It is improved, and other elongation, combustibility, and heat cycle resistance are also excellent characteristics.
[내열충격성시험][Heat resistance test]
시험장소 : 기아자동차 부재 실험팀Test Place: Kia Motors Experiment Team
시험기간 : 1998년 12월 13일 ∼ 1998년 12월 15일Test Period: December 13, 1998-December 15, 1998
시험목적 : KV－II SI단계의 개발평가Test purpose: Development evaluation of KV-II SI stage
이상 시험한 결과 고열과 계속적인 충격하에서 변형이 없었다.The test results showed no deformation under high temperature and continuous impact.
[난연성 시험][Flame retardancy test]
시험장소 : 기아자동차 설험계획부 재료실험팀Test Place: Material Testing Team, Kia Motors Planning Division
시험기간 : 1998년 10월 14일 ∼ 1998년 10월 15일Test Period: October 14, 1998-October 15, 1998
시험 목적 : CNV MP 개발평가Test purpose: CNV MP development evaluation
시험결과 : 난연성은 규격을 만족함.Test result: Flame retardancy meets standard.
[흡음시험][Sound absorption test]
시험검사 성적서Test report
본 발명은 종래 소각 처리로만 가능한 폐기물인 자동차 시트제조용 스크랩이나 인슈레이터 제조후 잔류한 스크랩을 원료로 이용하여 특정한 온도와 비율로 혼합후 성형하므로서 신선한 재료를 사용한 것과 동일한 성능과 특성을 갖는 인슈레이터를 제조하게 되었다. 따라서 자원의 재활용으로 인한 공해의 감소와 폐자재의 재활용으로 원가의 혁신적인 감소가 가능하게 되었다. 특히 제조된 인슈레이터는 종래의 고무와 폴리우레탄 포옴의 적층제조 공정보다 단순화된 단일 압축성형공정이 이용되어 고무재의 인슈레이터를 다시 후가공하여 또다른 형태의 자동차용 인슈레이터의 제작공정이 필요하지 않게 되어 공정의 단순화도 가능하게 된 것이다.The present invention uses an insulator having the same performance and characteristics as using fresh materials by mixing and molding at a specific temperature and ratio using scraps for automobile seat manufacturing or scraps remaining after manufacturing insulators, which are wastes that can be conventionally only incinerated. To manufacture. Therefore, the reduction of pollution due to the recycling of resources and the recycling of waste materials enable innovative reduction of costs. In particular, the manufactured insulator uses a single compression molding process, which is simpler than the conventional manufacturing process of rubber and polyurethane foam, and reprocesses the rubber insulator, thus eliminating the need for another type of automobile insulator. Thus, the process can be simplified.
Claims (1)
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980046554A KR100288605B1 (en) | 1998-10-31 | 1998-10-31 | Method of production of chip molded product for automobile using waste polyurethane resin |
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| Application Number | Priority Date | Filing Date | Title |
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| KR1019980046554A KR100288605B1 (en) | 1998-10-31 | 1998-10-31 | Method of production of chip molded product for automobile using waste polyurethane resin |
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| KR19990014359A KR19990014359A (en) | 1999-02-25 |
| KR100288605B1 true KR100288605B1 (en) | 2001-05-02 |
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| KR1019980046554A KR100288605B1 (en) | 1998-10-31 | 1998-10-31 | Method of production of chip molded product for automobile using waste polyurethane resin |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100381693B1 (en) * | 2000-11-17 | 2003-05-01 | (주)케이엘코퍼레이션 | The method and its products of used polyuretane foam |
| KR100387690B1 (en) * | 1999-12-27 | 2003-06-25 | 이종섭 | Manufacturing method of soft urethane foam isolation material using wasted-polyurethane |
| KR20030055420A (en) * | 2001-12-26 | 2003-07-04 | 석귀호 | Urethane Board for Sandwich Pannel using Waste Polyurethane |
| KR100402657B1 (en) * | 2000-04-04 | 2003-10-22 | 강대운 | Method of producing a built-up panel |
| KR100958370B1 (en) | 2009-10-12 | 2010-05-17 | (주)고경씨앤피 | Manufacturing process of recycling chip used autocar's internal sheet waste |
| WO2011046331A2 (en) * | 2009-10-12 | 2011-04-21 | (주)고경씨앤피 | Chip recycled from interior sheet waste of a vehicle and laminated sheet for vehicle interior material using same |
| WO2014138827A1 (en) * | 2013-03-11 | 2014-09-18 | Vivan Gilceu Antonio | Method for manufacturing road signs from pressed polyurethane waste |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101224536B1 (en) * | 2011-02-21 | 2013-01-21 | (주)대한솔루션 | Recycling sound absorbing and insulating material for automobile and the method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768548A (en) * | 1993-08-31 | 1995-03-14 | Okamura Corp | Recycling of soft urethane foam |
| JPH0788865A (en) * | 1993-09-27 | 1995-04-04 | Inoac Corp | Compression molding of waste polyurethane product |
| JPH07205169A (en) * | 1994-01-13 | 1995-08-08 | Nippon Tokushu Toryo Co Ltd | Production of molded soundproof material |
-
1998
- 1998-10-31 KR KR1019980046554A patent/KR100288605B1/en not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0768548A (en) * | 1993-08-31 | 1995-03-14 | Okamura Corp | Recycling of soft urethane foam |
| JPH0788865A (en) * | 1993-09-27 | 1995-04-04 | Inoac Corp | Compression molding of waste polyurethane product |
| JPH07205169A (en) * | 1994-01-13 | 1995-08-08 | Nippon Tokushu Toryo Co Ltd | Production of molded soundproof material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100387690B1 (en) * | 1999-12-27 | 2003-06-25 | 이종섭 | Manufacturing method of soft urethane foam isolation material using wasted-polyurethane |
| KR100402657B1 (en) * | 2000-04-04 | 2003-10-22 | 강대운 | Method of producing a built-up panel |
| KR100381693B1 (en) * | 2000-11-17 | 2003-05-01 | (주)케이엘코퍼레이션 | The method and its products of used polyuretane foam |
| KR20030055420A (en) * | 2001-12-26 | 2003-07-04 | 석귀호 | Urethane Board for Sandwich Pannel using Waste Polyurethane |
| KR100958370B1 (en) | 2009-10-12 | 2010-05-17 | (주)고경씨앤피 | Manufacturing process of recycling chip used autocar's internal sheet waste |
| WO2011046331A2 (en) * | 2009-10-12 | 2011-04-21 | (주)고경씨앤피 | Chip recycled from interior sheet waste of a vehicle and laminated sheet for vehicle interior material using same |
| WO2011046331A3 (en) * | 2009-10-12 | 2011-10-27 | (주)고경씨앤피 | Chip recycled from interior sheet waste of a vehicle and laminated sheet for vehicle interior material using same |
| WO2014138827A1 (en) * | 2013-03-11 | 2014-09-18 | Vivan Gilceu Antonio | Method for manufacturing road signs from pressed polyurethane waste |
Also Published As
| Publication number | Publication date |
|---|---|
| KR19990014359A (en) | 1999-02-25 |
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