KR20030068984A - Manufacturing method of pannel for mold - Google Patents
Manufacturing method of pannel for mold Download PDFInfo
- Publication number
- KR20030068984A KR20030068984A KR1020020008838A KR20020008838A KR20030068984A KR 20030068984 A KR20030068984 A KR 20030068984A KR 1020020008838 A KR1020020008838 A KR 1020020008838A KR 20020008838 A KR20020008838 A KR 20020008838A KR 20030068984 A KR20030068984 A KR 20030068984A
- Authority
- KR
- South Korea
- Prior art keywords
- resin
- mold
- glass fiber
- lower mold
- pellet
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000003365 glass fiber Substances 0.000 claims abstract description 29
- 229920005989 resin Polymers 0.000 claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 25
- 239000008188 pellet Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000010298 pulverizing process Methods 0.000 claims abstract description 3
- 238000002844 melting Methods 0.000 claims abstract 3
- 230000008018 melting Effects 0.000 claims abstract 3
- 238000009415 formwork Methods 0.000 claims description 15
- 238000001746 injection moulding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 10
- 239000007924 injection Substances 0.000 abstract description 10
- 238000005260 corrosion Methods 0.000 abstract description 6
- 230000007797 corrosion Effects 0.000 abstract description 6
- 239000002699 waste material Substances 0.000 abstract description 6
- -1 polypropylene Polymers 0.000 abstract description 5
- 239000004743 Polypropylene Substances 0.000 abstract description 4
- 229920001155 polypropylene Polymers 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract description 4
- 238000003892 spreading Methods 0.000 abstract description 4
- 230000007480 spreading Effects 0.000 abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000011120 plywood Substances 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/70—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices
- B29C45/706—Means for plasticising or homogenising the moulding material or forcing it into the mould, combined with mould opening, closing or clamping devices using a single drive system providing both the mould closing and clamping pressure and also the injection pressure, e.g. using a fixed injection piston
-
- 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
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
-
- 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
- B29K2023/10—Polymers of propylene
- B29K2023/12—PP, i.e. polypropylene
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
Description
본 발명은 건축물 또는 구축물의 콘크리트 성형을 위한 유로홈 판재 및 거푸집에 사용되는 판재의 제조방법에 관한 것으로, 특히 폴리플로필렌 폐자원을 이용하여 글라스 화이버(Glass Fiber) 장섬유를 혼재하여 판재를 금형으로 제조하는 방법에 관한 것이다.The present invention relates to a method for producing a plate used for the flow path plate and formwork for concrete molding of a building or a building, and in particular, by mixing the glass fiber (Glass Fiber) long fibers using a polyflourene waste resources to mold the plate It relates to a method of manufacturing.
일반적으로 거푸집은 건축 또는 구축물의 콘크리트로 만들기 위해 사용되는 형틀을 만들기 위한 부분품으로써, 주로 베니어합판재의 배면에 각목재를 대고 고정하여 사용된다. 그러나 특수 용도로써 각 목재대신 상기 베니어합판재에 철재로 된 프레임을 대기도 하고, 경우에 따라서는 베니어합판재를 철판으로 대체하여 사용하기도 한다.In general, the formwork is a part for making a mold used to make the concrete of a building or a construction, and is mainly used by fixing the timber to the back of the veneer laminate. However, as a special use, a steel frame may be used for the veneer laminate instead of each wood, and in some cases, the veneer laminate may be replaced with an iron plate.
그러나 이러한 종래의 베이어합판재는 거푸집으로 활용시 콘크리트 페이스트내의 수분을 흡수하여 박리현상이 생기기 때문에 콜탈 등을 칠하기도 하여 사용되어야 하며, 그럼에도 불과하고 그 사용횟수가 3∼4회 정도로 작다.However, these conventional Bayer plywood is used as a formwork because it absorbs the moisture in the concrete paste to occur peeling phenomenon should also be used to coat the coal, etc., nevertheless it is only three to four times the use is small.
또한 철판을 사용할 경우에는 강도는 별문제가 없으나 중량이 무거우며, 수분 등에 의해 부식이 가속화되기 때문에, 이 역시 오랜 기간동안 사용하기에는 문제가 있다.In addition, when the iron plate is used, the strength is not a problem, but the weight is heavy, because the corrosion is accelerated by moisture, etc., this is also a problem to use for a long time.
한편 요즘의 추세에서는 구축물이 콘크리트 성형시 외표면에 요철을 주어 콘크리트를 양생하여 구축물의 외표면에 미감을 주는 공법을 많이 사용하는데, 이때 상기 판재들을 이용한 거푸집은 그 판재의 면에 요철을 주어 문양을 형성하는 것이 불가능하기 때문에 그 내면에 요철문양이 형성된 별도의 부재(스치로폴, 수지판재 등)를 개재하여 사용해야만 하는 복잡한 공정을 가져야만 하는 불편함이 있다.On the other hand, in the recent trend, the structure gives a concave and convexity to the outer surface of the concrete when the concrete is molded and uses a lot of construction methods to give an aesthetic sense to the outer surface of the structure. It is inconvenient to have a complicated process that must be used through a separate member (Schiropol, resin plate material, etc.) in which the uneven pattern is formed on the inner surface because it is impossible to form.
따라서 본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 창안된 것으로, 본 발명의 목적은 베니어합판재의 단점인 흡습·박리가 없고, 철판의 단점인 부식이 이루어지지 않으며, 그 판재의 면에 요철의 형성이 자유롭고 강도 또한 철판에 뒤지지 않는 거푸집용 판재를 제공함에 있다.Therefore, the present invention was devised to solve the conventional problems as described above, the object of the present invention is no moisture absorption and peeling, which is a disadvantage of the veneer laminate, there is no corrosion is a disadvantage of the iron plate, irregularities on the surface of the plate It is to provide a formwork plate free of the form and the strength is also inferior to the iron plate.
그리고 본 발명의 또 다른 부가적인 목적은 폴리플로필렌(PP)의 폐자원을 활용하는 것에도 있다.In addition, another additional object of the present invention is to utilize waste resources of polyflopropylene (PP).
상기 목적을 달성하기 위해 본 발명은 먼저 제 1 공정으로, 폐자원인 폴리플로필렌 스크랩(Scrap)을 분쇄하고 압출기에서 약 220℃ 정도의 열로 용융상태로 녹여서 압출할 때 특수 노즐에 여러가닥의 글라스 화이버(Glass Fiber) 실을 연속적으로 통과시키면 글라스 화이버실에 수지가 함침된다.In order to achieve the above object, the present invention is a first process, when pulverizing the polypropylene styrene scrap (waste resources) waste and melted in a molten state by heat of about 220 ℃ in an extruder to extrude a glass of special glass in a special nozzle Continuously passing the fiber (Glass Fiber) yarn impregnates the resin in the glass fiber chamber.
글라스화이버 비율이 약 20∼50%의 부분을 차지하는, 직경 약 3∼5mm에 길이 10∼50mm의 길이로 컷팅하여 PPGF 펠릿(PELLET)을 제조한다.PPGF pellets are prepared by cutting a length of 10-50 mm to a diameter of about 3-5 mm with a glass fiber proportion of about 20-50%.
그리고 제2공정으로, 상기 제1공정에서 제조된 펠릿을 사출기에 넣어 약 220℃ 정도로 녹인 후, 수직 압축기(VERTICAL PRESS)에 상하 금형을 장착한 후, 상하 금형 사이를 10~50cm 가량 벌린 후, 하금형에 상기 용융수지를 사출하면 이 수지는 핫 런너(HOT RUNNER)를 통하여 여러 구멍으로 계량된 일정 양의 수지가 하 금형에 고르게 퍼져서 하금형 표면상으로 올라오고, 이후 수직 압축기를 작동하여 상금형을 닫음으로써 올라온 수지에 압력을 가하면서 수지가 상하 금형내에 고른압을 받으면서 고르게 퍼지고 금형상의 원하는 문양을 갖는 거푸집용 판재제품을 얻는 것으로 달성된다. 이때 금형을 벌려 놓은 상태에서 사출하므로 압이 적게 걸려 저압사출이 되는 것이며, 금형을 달아 놓은 상태로 사출하면 압이 크게 걸려 고압사출이 된다.In the second step, the pellet prepared in the first step is melted at about 220 ° C. in the injection molding machine, and the upper and lower molds are mounted in a vertical compressor, and the upper and lower molds are separated by about 10 to 50 cm. When the molten resin is injected into the lower mold, this resin is spread through the hot runner to a certain amount of resin evenly spread in the lower mold, and then rises onto the lower mold surface. It is achieved by obtaining a formwork sheet product having a desired pattern on the mold by spreading the resin evenly while receiving pressure evenly in the upper and lower molds by applying pressure to the raised resin by closing the mold. At this time, since the injection is made in the open state of the mold, the pressure is less, and the low pressure injection is performed.
도 1은 본 발명의 제작공정도.1 is a manufacturing process of the present invention.
도 2는 본 발명의 제조상태를 보인 장치의 정면도.Figure 2 is a front view of the device showing a manufacturing state of the present invention.
도 3a 및 도 3b는 본 발명의 일부 공정을 보인 금형의 작동상태도.3a and 3b is an operating state of the mold showing some of the process of the present invention.
이하에서 본 발명을 바람직한 실시예의 첨부된 도면에 의해 보다 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings of preferred embodiments.
제 1 공정으로, 폐자원인 폴리플로필렌 스크랩(Scrap)을 분쇄하고 압출기에서 약 220℃ 정도의 열로 용융상태로 녹여서 압출할 때 특수 노즐에 여러가닥의 글라스 화이버(Glass Fiber) 실을 연속적으로 통과시키면 글라스 화이버실에 수지가 함침된다. 이때 수지량을 조절하면 글라스 화이버율이 조절된다.In the first process, the polypropylene petroleum scrap, which is a waste resource, is crushed and melted in an extruder with a melt of about 220 ° C in a molten state to continuously pass several strands of glass fiber yarn through a special nozzle. The resin is impregnated into the glass fiber chamber. At this time, if the resin amount is adjusted, the glass fiber rate is adjusted.
글라스화이버 비율이 약 20∼50%의 부분을 차지하는, 직경 약 3∼5mm에 길이 10∼50mm의 길이로 컷팅하여 PPGF 펠릿(PELLET)을 제조한다.PPGF pellets are prepared by cutting a length of 10-50 mm to a diameter of about 3-5 mm with a glass fiber proportion of about 20-50%.
그리고 제2공정으로, 상기 제1공정에서 제조된 펠릿을 사출기에 넣어 약 220℃ 정도로 녹인 후, 수직 압축기(VERTICAL PRESS)에 상하 금형을 장착한 후, 상하 금형 사이를 10~50cm (한정이유)가량 벌린 후, 하금형에 상기 용융수지를 사출하면 이 수지는 핫 런너(HOT RUNNER)를 통하여 여러 구멍으로 계량된 일정 양의 수지가 하 금형에 고르게 퍼져서 하금형 표면상으로 올라오고, 이후 수직 압축기를 작동하여 상금형을 닫음으로써 올라온 수지에 압력을 가하면서 수지가 상하 금형내에 고른압을 받으면서 고르게 퍼져서 금형상의 원하는 문양을 갖는 거푸집용 판재 제품을 얻는 것을 특징으로 한다.In the second step, the pellets prepared in the first step are melted at about 220 ° C. in the injection molding machine, and the upper and lower molds are mounted in a vertical compressor, and then the upper and lower molds are between 10 and 50 cm (limited reason). After opening the mold, the molten resin is injected into the lower mold, and this resin is spread through the hot runner to a lower mold by spreading a certain amount of resin, which is measured through various holes, onto the lower mold. It is characterized in that to obtain a formwork sheet product having a desired pattern on the mold by spreading the resin evenly under the even pressure in the upper and lower molds while applying pressure to the resin raised by closing the upper mold.
한편 본 발명에 따른 저압 사출의 장점은Meanwhile, the advantages of low pressure injection according to the present invention
첫째, 노즐 사이즈가 넓어 유리섬유가 파괴되지 않아 일반 사출에 비하여 물성이 뛰어나고,First, because the nozzle size is wide, glass fiber is not destroyed, so it has excellent physical properties compared to general injection.
둘째, 고압 사출의 경우 제품이 클경우 여러 홀에서 수지가 나오면서 수지끼리 만나는 선, 즉 웰딩 라인(WELLDING LINE)이 생겨 그 부위에 힘을 가하면 갈라짐이 발생하나 저압 사출의 경우 웰딩라인이 발생되지 않는다. 그 이유는 여러구멍에서 올라온 수지끼리 합해진 후 가압하여 성형하므로 웰딩라인이 발생하지 않는다.Second, in the case of high pressure injection, when the product is large, resin comes out from several holes, and a line where resins meet, that is, a welding line, is formed. When a force is applied to the area, cracking occurs, but in the case of low pressure injection, a welding line does not occur. . The reason for this is that the welding lines are not generated because the resins raised from the various holes are combined and then molded by pressing.
셋째, 고압 사출의 경우 부위마다 받은 압이 서로 달라, 사출성형후 탈형하면 제품이 후변형이 많이 발생하나 저압 사출의 경우 압을 골고루 받아 후변형이 적다.Third, in the case of high pressure injection, the pressure received is different for each part, and if the mold is demolded after injection molding, the product undergoes a lot of post deformation.
이상과 같이 제조되는 본 발명은 베니어합판재의 단점인 흡습이 없고, 철판의 단점인 부식 및 중량의 문제점이 없으며, 고압 사출의 웰딩라인의 취약점, 후변형의 문제를 해결하였으며, 사용횟수 또한 40~70회 사용가능하며, 이를 재생할 수 있고, 가격이 저렴한 장점이 있다.The present invention manufactured as described above has no disadvantages of moisture absorption, which is a disadvantage of veneer laminate, no problems of corrosion and weight, which are disadvantages of steel plates, and solves problems of weakness and post-deformation of the welding line of high pressure injection. It can be used 70 times, can be reproduced, and has a low price.
또 금형제작시 금형 표면에 어떠한 무늬든 금형에 조각하여 이 금형으로 저압사출하면 같은 모양의 무늬가 형성된 거푸집이 생산되며 이것이 문양 거푸집이다. 이는 강도 또는 철판에 뒤지지 않는 거푸집용 판재로써, 아래의 표에서와 같이 폴리플로필렌(PP)에 글라스 화이버(GF)가 몇 %를 포함하는가를 따른 물성치이다.In addition, when the mold is produced, any pattern on the surface of the mold is sculpted into the mold and low-pressure injection into the mold produces a mold having the same pattern, which is a pattern formwork. This is a formwork sheet that does not lag behind the strength or iron plate, and is a physical property value depending on the percentage of glass fiber (GF) in polypropylene (PP) as shown in the table below.
PP ＋ GF 장섬유 물성표PP + GF Long Fiber Physical Properties
글라스 화이버가 40∼50% 함유될 때 가장 양호한 물성을 보이나 거푸집 판재로써는 그 설계적 기준에 따라 30% ~50%를 수용한다.When glass fiber contains 40 to 50%, the best physical properties are shown, but formwork boards accept 30% to 50% according to the design criteria.
글라스 화이버(GF)가 20% 이하일 때에는 전반적으로 물성치가 급격히 저하되어 건축용도의 거푸집으로 사용할 수 없을 정도의 취약한 단점이 있다.When the glass fiber (GF) is less than 20%, the overall physical properties are sharply deteriorated, so that the glass fiber (GF) cannot be used as a formwork for building.
본 발명에서 폴리플로필렌(PP)을 사용하는 이유는 열가소성수지중 가볍고, 가격이 저렴하며, 재생시 물성의 변함이 적기 때문이다.The reason for using polyflopropylene (PP) in the present invention is that the thermoplastic resin is light, inexpensive, and has little change in physical properties during regeneration.
그리고 글라스 화이버실(GF)은 세 섬유상의 유리면(Glass wool)으로써 보통 3∼100μ정도의 것을 사용하며, 충격강도가 강하며 보강재 작용이 탁월한 이유로 사용된다.Glass fiber yarn (GF) is a glass fiber (Glass wool) of three fibers, usually 3 ~ 100μ of that is used, and the impact strength is used because of the excellent reinforcement action.
한편 이상과 같이 제조되는 판재는 보통의 거푸집용으로는 폴리플로필렌(PP)에 글라스 화이버실(GF)(장섬유)의 비율이 30∼40%로 길이가 12㎜ 정도가 적합하며 거푸집외에 자동차에 강도를 요구하는 내외장재로 많이 이용할 수 있다.On the other hand, the plate manufactured as described above has a ratio of 30-40% of glass fiber yarn (GF) to polyflopropylene (PP) for ordinary formwork, and length of about 12 mm is suitable for automobiles. It can be used as interior and exterior materials requiring strength.
이상과 같이 구성되고 작동되는 본 발명은 베니어합판재의 단점인 흡습 및 표면 박리가 없고, 철판의 단점인 부식이 이루어지지 않으며, 특히 중요하게는 판재의 면에 요철을 주어 무늬형성이 자유롭다는 것이다.The present invention constructed and operated as described above has no disadvantages of hygroscopicity and surface peeling, which is a disadvantage of veneer laminate, and no corrosion, which is a disadvantage of iron plate, and particularly important, giving unevenness to the surface of the plate so that pattern formation is free. .
또한 강도의 면에서도 철판에 크게 뒤지지 않는 거푸집용 판재를 제공할 수 있는 것으로 거푸집으로의 활용시 베니어합판재는 보통 3∼4회 사용하고, 본 발명의 판재로 활용시에는 40∼70회를 사용할 수 있으며, 강도 또한 부식이 잘되는 철판에 크게 뒤지지 않으며, 특히 중요하게는 베니어합판재는 재활용이 불가하며 폐기시 어려움이 많으나, 본 발명에 의한 판재는 다시 분쇄하여 재활용이 가능한 경제성이 뛰어난 효과가 있다.In addition, in terms of strength, it is possible to provide a sheet for formwork that does not lag significantly behind the steel plate. When used as a formwork, veneer plywood is generally used 3 to 4 times, and when used as a plate of the present invention, 40 to 70 times can be used. In addition, the strength is also not much behind the corrosion-resistant iron plate, particularly important that the veneer plywood is not recycled and difficult to discard, but the plate material according to the present invention has an excellent economic efficiency that can be recycled again.
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