KR101015451B1 - Pannel for mold and its manufacturing method - Google Patents

Pannel for mold and its manufacturing method Download PDF

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Publication number
KR101015451B1
KR101015451B1 KR1020080079192A KR20080079192A KR101015451B1 KR 101015451 B1 KR101015451 B1 KR 101015451B1 KR 1020080079192 A KR1020080079192 A KR 1020080079192A KR 20080079192 A KR20080079192 A KR 20080079192A KR 101015451 B1 KR101015451 B1 KR 101015451B1
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South Korea
Prior art keywords
synthetic resin
blast furnace
dry pulp
sheet
furnace sludge
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KR1020080079192A
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Korean (ko)
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KR20100020549A (en
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박형만
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오정석
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/18—Waste materials; Refuse organic
    • C04B18/24—Vegetable refuse, e.g. rice husks, maize-ear refuse; Cellulosic materials, e.g. paper, cork
    • C04B18/241—Paper, e.g. waste paper; Paper pulp
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

본 발명은 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재에 관한 것으로, 거푸집용 판재를 경량화하며 생산원가를 절감할 수 있도록 함을 목적으로 하 것이다.The present invention relates to a sheet for formwork made of a dry pulp and blast furnace sludge, it is intended to reduce the formwork and reduce the production cost.

즉, 본 발명은 거푸집용 판재를 구성함에 있어서,건조 펄프와 고로슬러지 및 복합 합성수지를 배합 구성한 것이다.In other words, the present invention comprises a dry pulp, blast furnace sludge and composite synthetic resin in the form of the formwork sheet material.

따라서, 본 발명은 거푸집용 판재를 건조 펄프와 고로슬러지로 및 복합 합성수지로 구성함으로써 경량화되고 단열성이 향상되며 폐지를 활용할 수 있어 환경오염을 방지할 수 있는 것이다.Therefore, the present invention is to form a plate for the formwork with a dry pulp and blast furnace sludge and composite synthetic resin to be lightweight, improved heat insulation and can utilize the waste paper to prevent environmental pollution.

거푸집용 판재 Formwork Plate

Description

건조 펄프와 고로슬러지로 이루어진 거푸집용 판재와 그 제조방법{Pannel for mold and its manufacturing method}Forming plate made of dry pulp and blast furnace sludge and its manufacturing method {Pannel for mold and its manufacturing method}

본 발명은 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재와 그 제조방법에 관한 것으로, 더욱 상세하게는 거푸집용 판재를 구성함에 있어서,건조 펄프와 고로슬러지 및 복합 합성수지를 배합 구성하여서, 거푸집용 판재를 경량화하며 생산원가를 절감할 수 있도록 함을 목적으로 하 것이다.The present invention relates to a die sheet consisting of a dry pulp and blast furnace sludge and a method for manufacturing the same, and more particularly, in forming a form sheet, by combining dry pulp, blast furnace sludge and composite synthetic resin, It aims to reduce the weight and reduce the production cost.

일반적으로, 거푸집용 판재는 목재시트를 복층으로 합지한 합판을 주로 사용하고 있다.In general, formwork boards mainly use plywood laminated with wood sheets in multiple layers.

상기한 바와 같은 거푸집용 판재는 양면에 탈영과정에 있어서, 탈영면이 매끄럽게 형성되게 양면에 종이를 합지한 것을 사용하여 실시하고 있다.As described above, the die sheet is formed by laminating paper on both sides in a stripping process on both sides so that the stripping surface is smoothly formed.

그러나 상기한 바와 같은 종래의 거푸집용 판재는 그 재료가 목재로 구성되어 있어 생산원가를 증대시키고 숲의 파괴를 유발하는 목재가 사용됨으로 인한 환경파괴를 유발하는 문제점이 있었다.However, the conventional formwork sheet as described above has a problem that the material is composed of wood to increase the production cost and cause environmental damage due to the use of wood that causes the destruction of the forest.

이에, 본 발명은 상술한 바와 같이 거푸집용 판재가 목재를 주원료로 만들어짐으로 인한 환경파괴의 유발과, 단열성이 낮아 몰탈의 양생이 용이하지 못한 문제점이 있었다.Thus, the present invention has a problem that the formwork plate caused environmental destruction due to the wood made of the main raw material, and the heat insulation is not easy to cure the mortar.

즉, 본 발명은 거푸집용 판재를 구성함에 있어서,건조 펄프와 고로슬러지 및 복합 합성수지를 배합 구성한 것이다.In other words, the present invention comprises a dry pulp, blast furnace sludge and composite synthetic resin in the form of the formwork sheet material.

따라서, 본 발명은 거푸집용 판재를 건조 펄프와 고로슬러지로 및 복합 합성수지로 구성함으로써 경량화되고 단열성이 향상되며 폐지를 활용할 수 있어 환경오염을 방지할 수 있는 것이다.Therefore, the present invention is to form a plate for the formwork with a dry pulp and blast furnace sludge and composite synthetic resin to be lightweight, improved heat insulation and can utilize waste paper to prevent environmental pollution.

이하, 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.Hereinafter, described in detail by the accompanying drawings as follows.

본 발명은 거푸집용 판재를 경량화하고 단열성을 높이며 폐지 등의 재활용을 통하여 환경친화적으로 만들 수 있도록 한 것이다.The present invention is to be made environmentally friendly by reducing the formwork plate material to increase the weight, heat insulation and recycling waste paper.

즉, 본 발명은 거푸집용 판재에 있어서, 전체 중량을 경량화하는 건조 펄프(11)와 단열성을 높이는 고로슬러지(12) 및 결합력을 높이는 복합 합성수지(13)를 배합하여서 조성한 것이다.In other words, the present invention is formed by combining a dry pulp 11 to reduce the overall weight, the blast furnace sludge 12 to increase the heat insulation and the composite synthetic resin 13 to increase the bonding force in the form plate.

여기서, 상기 건조 펄프(11)는 폐지를 분쇄 가공형성한 것이다.Here, the dry pulp 11 is formed by grinding the waste paper.

또한, 상기 거푸집용 판재(23)를 구성하는 건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지의 배합비는 건조 펄프(11)를 55~80중량%로 구성하고, 고로슬러지(12)를 5~15중량%로 구성하며, 복합 합성수지(13)는 10~30중량%로 배합조성함이 바람직한 것이다.In addition, the mixing ratio of the dry pulp 11, the blast furnace sludge 12 and the composite synthetic resin constituting the formwork plate 23 comprises 55 to 80% by weight of the dry pulp 11, the blast furnace sludge 12 It is composed of 5 to 15% by weight, the composite synthetic resin 13 is preferably composed of 10 to 30% by weight.

한편, 복합 합성수지(13)는 돌가루와 합성수지를 배합조성한 것으로서, 그 조성비는 1 : 1 의 체적 비로 배합조성하여 실시하며, 합성수지는 그 제조가 용이하게 열경화성 복합 합성수지를 사용하여 실시함이 바람직한 것이다.On the other hand, the composite synthetic resin 13 is a mixture composition of stone powder and synthetic resin, the composition ratio is carried out by the formulation composition in a volume ratio of 1: 1, the synthetic resin is preferably carried out using a thermosetting composite synthetic resin easily. .

또한, 상기 복합 합성수지(13)에 아연산화물, 티타늄이산화물, 철산화물, 마그네슘산화물 등과 같은 UV탈색방지제(14)를 배합하여 조성하여 실시할 수 있는 것이다.In addition, the composite synthetic resin 13 can be carried out by mixing the UV decolorization inhibitor 14, such as zinc oxide, titanium dioxide, iron oxide, magnesium oxide and the like.

이하, 본 발명에 따른 제조과정을 설명하면 다음과 같다.Hereinafter, the manufacturing process according to the present invention will be described.

건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지로 조성된 거푸집용 판재의 제조방법은 도 1 에 도시된 바와 같이 건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지(13)를 배합하는 배합과정(100)와, 상기 배합과정(100)을 통하여 배합 조성된 조성물을 규격화된 판상의 틀에 넣고 가열 용융하는 성형과정(210)과, 상기 성형과정(210)을 통하여 형성된 성형판(11)을 가열하여 기포를 제거하는 기포제거가압과정(310)과, 상기 기포제거가압과정(310)을 통하여 성형판재(21)를 냉각하는 냉각과정(400)으로 이루어진 것이다.As a method of manufacturing a formwork sheet formed of a dry pulp 11, blast furnace sludge 12 and a composite synthetic resin, as shown in FIG. 1, a dry pulp 11, a blast furnace sludge 12 and a composite synthetic resin 13 are blended. Formulation process (100) to be carried out, and the molding process formed by the molding process 210 and the heat-melting process of putting the composition formulated through the compounding process 100 into a standardized plate-shaped frame and the molding process (210) 11) a bubble removing pressurization process 310 for removing bubbles by heating and a cooling process 400 for cooling the molded plate member 21 through the bubble removing pressurization process 310.

또한, 본 발명의 다른 제조방법은 도 2 에 도시된 바와 같이 건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지(13)를 배합하는 배합과정(100)와, 상기 배합과정(100)을 통하여 배합 조성된 조성물을 용융하는 조성물 용융과정(220)과, 상기 조성물 용융과정(220)을 통하여 용융된 조성물을 시트상으로 압출하는 시트압출과 정(230)과, 상기 시트압출과정(230)을 통하여 압출된 시트판재(22)의 내부 기포를 가압 제거하는 기포제거롤링과정(320)과, 상기 기포제거롤링과정(320)을 통하여 성형된 판재를 냉각하는 냉각과정(400)과, 냉각과정(400)을 통하여 기포가 제거된 시트판재(22)를 일정길이로 절단하는 절단과정(500)으로 이루어진 것이다.In addition, another manufacturing method of the present invention is a blending process (100) and a blending process (100) of blending the dry pulp 11, blast furnace sludge 12 and the composite synthetic resin 13, as shown in FIG. A composition melting process 220 for melting the composition composition blended through, a sheet extrusion process 230 for extruding the molten composition through the composition melting process 220 in the form of a sheet, and the sheet extrusion process 230 Bubble removing rolling process 320 for pressurizing and removing the internal bubbles of the sheet plate material 22 extruded through the cooling process 400 for cooling the plate formed through the bubble removing rolling process 320, and the cooling process It is made of a cutting process 500 for cutting the sheet plate material 22 from which bubbles are removed through a predetermined length (400).

한편, 본 발명의 제조에 있어서, 배합과정(100)의 건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지의 배합비는 건조 펄프(11)를 55~80중량%로 구성하고, 고로슬러지(12)를 5~15중량%로 구성하며, 복합 합성수지(13)는 10~30중량%로 배합조성함이 바람직한 것이다.Meanwhile, in the preparation of the present invention, the blending ratio of the dry pulp 11, the blast furnace sludge 12 and the composite synthetic resin in the blending process 100 comprises 55 to 80 wt% of the dry pulp 11, and the blast furnace sludge ( 12) is composed of 5 to 15% by weight, the composite synthetic resin 13 is preferably 10 to 30% by weight of the composition.

또한, 상기 복합 합성수지에 UV탈색방지제(14)를 배합하여 조성하여 실시할 수 있는 것이다.In addition, it can be carried out by compounding the UV bleaching agent (14) to the composite synthetic resin.

상기한 바와 같이 거푸집용 판재에 있어서, 전체 중량을 경량화하는 건조 펄프(11)와 단열성을 높이는 고로슬러지(12) 및 결합력을 높이는 복합 합성수지(13)를 배합하여서 조성하되, 상기 건조 펄프(11)는 폐지를 분쇄 가공형성하고, 상기 거푸집용 판재(23)를 구성하는 건조 펄프(11)와 고로슬러지(12) 및 복합 합성수지의 배합비는 건조 펄프(11)를 55~80중량%로 구성하고, 고로슬러지(12)를 5~15중량%로 구성하며, 복합 합성수지(13)는 10~30중량%로 배합조성하여 실시하게 되면, 그 구성분이 건조 펄프로 이루어져 그 중량이 경량화되며, 건조 펄프는 폐지를 분쇄 가공한 것으로서 폐자원의 활용할 수 있으며, 거푸집용 판재(23)의 사용 후 폐기에 있어서도 재활용이 가능하여 환경오염이 방지되는 것이다.In the formwork as described above, the dry pulp 11 to reduce the overall weight, the blast furnace sludge 12 to increase the thermal insulation and the composite synthetic resin 13 to increase the bonding force, but the composition, the dry pulp (11) The waste paper is pulverized and formed, and the blending ratio of the dry pulp 11 and the blast furnace sludge 12 and the composite synthetic resin constituting the formwork plate 23 comprises 55 to 80% by weight of the dry pulp 11, When the blast furnace sludge 12 is composed of 5 to 15% by weight, and the composite synthetic resin 13 is formulated and mixed at 10 to 30% by weight, the composition is composed of dry pulp, and the weight thereof is reduced. Waste paper can be used as a pulverized processing, it is possible to utilize the waste resources, it is possible to recycle in the disposal after use of the formwork plate 23 is to prevent environmental pollution.

따라서, 본 발명은 거푸집용 판재를 건조 펄프와 고로슬러지로 및 복합 합성수지로 구성함으로써 경량화되고 단열성이 향상되며 폐지를 활용할 수 있어 환경오염을 방지할 수 있는 것이다.Therefore, the present invention is to form a plate for the formwork with a dry pulp and blast furnace sludge and composite synthetic resin to be lightweight, improved heat insulation and can utilize the waste paper to prevent environmental pollution.

도 1 은 본 발명에 따른 제조 방법에 있어서 1 is a manufacturing method according to the present invention

가압 성형에 의한 과정을 보인 공정 예시도.Process illustration showing the process by pressure molding.

도 2 는 본 발명에 따른 제조 방법에 있어서2 is a manufacturing method according to the present invention.

롤링 성형에 의한 과정을 보인 공정 예시도.Illustrated process showing the process by rolling forming.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

11 : 건조 펄프 12 : 고로슬러지11: dry pulp 12: blast furnace sludge

13 : 복합 합성수지 14 : UV탈색방지제13 composite resin 14 UV bleaching agent

21 : 성형판재 22 : 시트판재21: molded plate material 22: sheet plate material

23 : 거푸집용 판재23: formwork board

100 : 배합과정100: Mixing process

210 : 성형과정210: forming process

220 : 조성물 용융과정 230 : 시트압출과정220: melting process of the composition 230: sheet extrusion process

310 : 기포제거가압과정 320 : 기포제거롤링과정310: bubble removing pressure process 320: bubble removing rolling process

400 : 냉각과정400: cooling process

500 : 절단과정500: cutting process

Claims (4)

거푸집용 판재에 있어서, 전체 중량을 경량화하는 건조 펄프와 단열성을 높이는 고로슬러지 및 결합력을 높이는 복합 합성수지를 배합하여서 조성하되,In the form plate, a combination of dry pulp to reduce the total weight, blast furnace sludge to increase the heat insulation and composite synthetic resin to increase the bonding force, 상기 건조 펄프는 폐지를 분쇄 가공 형성하고,  The dry pulp is formed by grinding the waste paper, 상기 복합 합성수지는 돌가루와 합성수지를 배합조성하되, 그 조성비는 1 : 1 의 체적비로 배합조성하며, 합성수지는 제조가 용이하게 열경화성 복합 합성수지를 형성하며, The composite synthetic resin is a composite composition of the stone powder and the synthetic resin, the composition ratio of the composition ratio of 1: 1, the synthetic resin is easy to manufacture, forming a thermosetting composite synthetic resin, 상기 거풍집용 판재를 구성하는 건조 펄프와 고로슬러지 및 복합 합성수지의 배합비는 건조 펄프를 55~80중량%로 구성하고, 고로슬러지를 5~15중량%로 구성하며, 복합 합성수지는 10~30중량%로 배합조성고,The blending ratio of the dry pulp and the blast furnace sludge and the composite synthetic resin constituting the sheet for the wind house comprises 55 to 80% by weight of the dry pulp, the blast furnace sludge to 5 to 15% by weight, the composite synthetic resin 10 to 30% by weight Blending composition, 상기 복합 합성수지에 UV탈색방지제를 배합하여 조성한 것을 특징으로 하는 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재.Forming plate made of a dry pulp and blast furnace sludge, characterized in that the composite synthetic resin is formulated by mixing a UV bleaching agent. 건조 펄프와 고로슬러지 및 복합 합성수지로 조성된 거푸집용 판재의 제조방법은 The manufacturing method of formwork sheet composed of dry pulp, blast furnace sludge and composite synthetic resin is 건조 펄프와 고로슬러지 및 복합 합성수지를 배합하는 배합과정와, 상기 배합과정을 통하여 배합 조성된 조성물을 규격화된 판상의 틀에 넣고 가열 용융하는 성형과정과, 상기 성형과정을 통하여 형성된 성형판재를 가열하여 기포를 제거하는 기포제거가압과정과, 상기 기포제거가압과정을 통하여 성형판재를 냉각하는 냉각과정으로 이루어지며,A blending process of blending dry pulp, blast furnace sludge and composite synthetic resin, a molding process of heating and melting a composition formed by mixing through the blending process into a standard plate-shaped mold, and heating and foaming the formed plate member formed through the molding process. It is made of a bubble removing pressurization process to remove the, and a cooling process of cooling the molding plate through the bubble removing pressurization process, 배합과정의 건조 펄프와 고로슬러지 및 복합 합성수지의 배합비는 건조 펄프를 55~80중량%로 구성하고, 고로슬러지를 5~15중량%로 구성하며, 복합 합성수지는 10~30중량%로 배합조성한 것을 특징으로 하는 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재의 제조방법.The mixing ratio of dry pulp, blast furnace sludge and composite synthetic resin in the blending process is composed of 55 to 80% by weight of dry pulp, 5 to 15% by weight of blast furnace sludge, and 10 to 30% by weight of composite synthetic resin. Method for producing a sheet for formwork consisting of dry pulp and blast furnace sludge characterized in that. 건조 펄프와 고로슬러지 및 복합 합성수지로 조성된 거푸집용 판재의 제조방법은The manufacturing method of formwork sheet composed of dry pulp, blast furnace sludge and composite synthetic resin is 건조 펄프와 고로슬러지 및 복합 합성수지를 배합하는 배합과정와, 상기 배합과정을 통하여 배합 조성된 조성물을 용융하는 조성물 용융과정과, 상기 조성물 용융과정을 통하여 용융된 조성물을 시트상으로 압출하는 시트압출과정과, 상기 시트압출과정을 통하여 압출된 시트판재의 내부 기포를 롤링 제거하는 기포제거롤링과정과, 상기 기포제거롤링과정을 통하여 기포가 제거된 시트판재를 냉각하는 냉각과정과, 냉각과정을 통하여 냉각된 시트판재를 일정길이로 절단하는 절단과정으로 이루어지며,A compounding process of blending dry pulp, blast furnace sludge and composite synthetic resin, a composition melting process of melting the composition formulated through the compounding process, a sheet extrusion process of extruding the molten composition through a sheet melting process into a sheet, , A bubble removing rolling process for rolling off the internal bubbles of the sheet plate material extruded through the sheet extrusion process, and a cooling process for cooling the sheet plate material from which the bubbles are removed through the bubble removing rolling process, and cooled by the cooling process. It consists of a cutting process of cutting the sheet material to a certain length, 배합과정의 건조 펄프와 고로슬러지 및 복합 합성수지의 배합비는 건조 펄프를 55~80중량%로 구성하고, 고로슬러지를 5~15중량%로 구성하며, 복합 합성수지는 10~30중량%로 배합조성한 것을 특징으로 하는 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재의 제조방법.The mixing ratio of dry pulp, blast furnace sludge and composite synthetic resin in the blending process is composed of 55 to 80% by weight of dry pulp, 5 to 15% by weight of blast furnace sludge, and 10 to 30% by weight of composite synthetic resin. Method for producing a sheet for formwork consisting of dry pulp and blast furnace sludge characterized in that. 제 2 항 또는 제 3 항에 있어서;The method of claim 2 or 3; 상기 복합 합성수지에 UV탈색방지제를 배합하여 조성한 것을 특징으로 하는 건조 펄프와 고로슬러지로 이루어진 거푸집용 판재의 제조방법. Method for producing a sheet for formwork consisting of a dry pulp and blast furnace sludge, characterized in that the composite synthetic resin was formulated by mixing a UV bleaching agent.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970000441A (en) * 1995-06-13 1997-01-21 Stick Feed Hydraulic Circuit of Drilling Machine
KR200179372Y1 (en) 1999-11-27 2000-04-15 송덕봉 Plate for concrete construction
KR20010079372A (en) * 2001-07-10 2001-08-22 홍진의 Method for reuse of wastewater from semiconductor sawing process
KR20030081318A (en) * 2000-10-10 2003-10-17 캘리포니아 인스티튜트 오브 테크놀로지 Distributed circular geometry power amplifier architecture
KR100473347B1 (en) 2003-01-22 2005-03-10 김경애 Incombustible panel composite used lightweight aggregate
KR200381318Y1 (en) 2005-01-14 2005-04-14 곽상운 Mold

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR970000441A (en) * 1995-06-13 1997-01-21 Stick Feed Hydraulic Circuit of Drilling Machine
KR200179372Y1 (en) 1999-11-27 2000-04-15 송덕봉 Plate for concrete construction
KR20030081318A (en) * 2000-10-10 2003-10-17 캘리포니아 인스티튜트 오브 테크놀로지 Distributed circular geometry power amplifier architecture
KR20010079372A (en) * 2001-07-10 2001-08-22 홍진의 Method for reuse of wastewater from semiconductor sawing process
KR100473347B1 (en) 2003-01-22 2005-03-10 김경애 Incombustible panel composite used lightweight aggregate
KR200381318Y1 (en) 2005-01-14 2005-04-14 곽상운 Mold

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