KR100387215B1 - A network structure of plastic and the manufacturing method - Google Patents
A network structure of plastic and the manufacturing method Download PDFInfo
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- KR100387215B1 KR100387215B1 KR10-2000-0044054A KR20000044054A KR100387215B1 KR 100387215 B1 KR100387215 B1 KR 100387215B1 KR 20000044054 A KR20000044054 A KR 20000044054A KR 100387215 B1 KR100387215 B1 KR 100387215B1
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- plastic
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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
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
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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
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
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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
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
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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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
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- 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
- B29D28/00—Producing nets or the like, e.g. meshes, lattices
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
본 발명은 플라스틱 판체를 종,횡으로 연신하여 강도와 인장력을 높이는 망상구조물 제조방법에 관한 것으로, 특히 플라스틱 판체를 연신 시킬 때 종방향의 연신후 횡근부를 부분적으로 가압 연신 시키는 방법을 통해 신속 간편하게 고강도의 플라스틱 망상구조물을 얻을 수 있는 고강도 플라스틱 망상구조물 제조방법에 관한 것이다.The present invention relates to a method for producing a network structure to increase the strength and tensile strength by stretching the plastic plate longitudinally, transversely, in particular when the plastic plate is stretched quickly and easily through the method of partially pressing the transverse portion after the longitudinal stretching It relates to a high-strength plastic network structure manufacturing method capable of obtaining a high-strength plastic network structure.
종래에는 플라스틱판체를 연신 시킬 때 전부분을 모두 동시에 연신 시켜야 하기 때문에 큰 장치가 구비되어야 하고 또 작업이 어려워지는 단점이 있었다.In the related art, when the plastic sheet is drawn, all parts must be drawn at the same time, so that a large device must be provided and the work becomes difficult.
이러한 본 발명은 압출가공된 플라스틱 판체에 다수개의 구멍을 종횡방향으로 나란히 형성한 후 이를 종횡방향으로 연신 시킨 후 횡근부분에만 프레스를 이용하여 부분적으로 횡방향의 연신을 실시하므로 어떠한 방향으로도 부러지지 않는 높은 강도를 가질 수 있는 견고한 플라스틱 망상 구조물을 이룰 수가 있으며, 횡방향으로 연신시키는 금형의 크기를 최소화할 수 있고, 또 필요한 부분만 가압하므로 경제적인 연신공정을 실시할 수 있는 효과가 있다.In the present invention, a plurality of holes are formed side by side in the longitudinal direction in the extruded plastic plate, and then stretched in the longitudinal direction, and then partially stretched in the transverse direction using a press only in the transverse portion, so that it does not break in any direction. It is possible to achieve a rigid plastic network structure that can have a high strength, to minimize the size of the mold extending in the transverse direction, and pressurize only the necessary portion, there is an effect that can be carried out economical stretching process.
Description
본 발명은 플라스틱 판체를 종,횡으로 연신하여 강도와 인장력을 높이는 망상구조물 제조방법에 관한 것으로, 특히 플라스틱 판체를 연신시킬 때 구멍의 연신방향과 직각을 이루는 횡근부를 별도의 가압부로 가압하면서 연신 시켜 고강도의 플라스틱 망상구조물 및 그 제조방법에 관한 것이다.The present invention relates to a method for producing a network structure to increase the strength and tensile strength by stretching the plastic plate longitudinally, horizontally, and in particular, when stretching the plastic plate body while pressing the transverse muscles forming a perpendicular to the stretching direction of the hole with a separate pressing portion It relates to a high-strength plastic network structure and its manufacturing method.
일반적으로, 플라스틱을 연신하여 이루어지는 플라스틱 구조물 즉, 연신 구조물은 단축 연신 구조물과 2축 연신 구조물 나눌 수 있다.In general, a plastic structure formed by stretching plastic, that is, a stretched structure may be divided into a uniaxially stretched structure and a biaxially stretched structure.
단축 연신 구조물은 차양, 곡물가리개, 방설벽, 방풍막, 클래딩 재료(cladding material), 반광스크린(anti-dazzle screen), 방충스크린, 지면 지지 또는 안정체로서 사용할 수 있다.Single-stretched structures can be used as shades, grain shades, barriers, windscreens, cladding materials, anti-dazzle screens, insect screens, ground supports or stabilizers.
그리고 2축연신 구조물은 스톡펜싱(stock fencing), 원예, 토목, 올리브 추수 및 적층판 사이의 보강용으로 사용되며, 흙, 땅, 모래, 진흙, 또는 돌멩이 같은 어떤 적당한 형태의 입자재료를 지지 또는 안정화시킬 때나 둑, 도로밑 빌딩밑 또는 부두밑과 같은 어떤 적당한 위치에도 사용된다.And biaxially stretched structures are used for stock fencing, horticulture, civil engineering, olive harvesting, and reinforcement between laminates, and to support or stabilize any suitable form of particulate material such as soil, land, sand, mud, or stone. It can be used at any suitable location, such as at the foot of a jetty, under a road, or under a pier.
이와 같이 2축연신 구조물은 단축연신 구조물보다 폭넓게 사용된다. 그 이유는 2축 연신 구조물이 단축 연신 구조물보다 인장력 등 강도가 보다 강하기 때문이다.As such, the biaxially stretched structure is used more widely than the uniaxially stretched structure. The reason is that the biaxially stretched structure is stronger in strength than the uniaxially stretched structure.
즉, 플라스틱 판체를 제조할 때 압출에 의하여 제조되므로 재료가 갖는 융점에 따라 분자연결고리가 힘이 주어지는 방향으로 꼬리를 물고 붙는 특성이 강해 압출되는 방향인 종열상으로는 강한 연결력을 갖으나, 횡열은 구조적으로 약한 접합구조를 갖게되기 때문이다. 예를 들면 연결판체로 제조되는 종이, 철판 등에서도 종열은 강하게 접속되어 강한 인장력이 있으나 횡열은 쉽게 찢어지거나 부러지는 현상이 발생한다. 따라서 보강연신 구조물은 단축보다는 2축연신 구조물이 바람직하다.That is, since the plastic plate is manufactured by extrusion, the molecular link ring has a strong connection force in the longitudinal column, which is the direction in which the molecular link is held in the direction in which force is applied, depending on the melting point of the material. This is because the structurally weak junction structure. For example, even in a paper or iron plate made of a connecting plate, the vertical rows are strongly connected and strong tensile force, but the transverse rows are easily torn or broken. Therefore, the reinforced stretched structure is preferably a biaxially stretched structure rather than a single axis.
이러한 2축연신 구조물은 특허 제13516호에 플라스틱 판체의 표면에 구멍을 뚫거나 함몰부를 형성하여 종방향으로 1차 연신시킨 후 횡방향으로 2차 연신시켜 형성하는 방법에 소개되어 있다.Such a biaxially stretched structure is introduced in Patent 113516 by forming a hole in the surface of a plastic plate or forming a recess to primary stretch in the longitudinal direction and then secondary stretch in the transverse direction.
그러나 연신이 종방향이 이루어진 후 횡방향이 연신되는 순차적인 연신방법으로 되어 있어 플라스틱특성상 일방향으로 1차연신시킨 후에 다른 방향으로 2차 연신시키면 연신이 이루어지지 않는 특성에 의해 2축연신 구조물이라도 쉽게 찢어지거나 부러지게 된다.However, it is a sequential stretching method in which the transverse direction is stretched after the stretching is made in the longitudinal direction. Therefore, if it is first stretched in one direction and then stretched in the other direction, the stretch is not easily performed even in the biaxially stretched structure. Torn or broken.
이와 같은 현상을 방지하기 위해 돌출부와 함몰부로 구성된 한 쌍의 상하요철판사이에 플라스틱판체를 위치시키고 압착시켜 플라스틱판체가 사방으로 연신되도록 한 것이 본 출원인에 의해 출원된 특허 출원번호 97-11442호로 출원한 바있다.In order to prevent such a phenomenon, the plastic plate body is placed between two pairs of upper and lower concave-convex plates consisting of protrusions and depressions and pressed so that the plastic plate body is stretched in all directions. There is one bar.
이와 같이 제조되는 플라스틱판체 구조물은 연신이 사방으로 동시에 일어나기 때문에 어느 방향으로도 높은 인장강도를 보유하게 되므로 토목공사나, 콘크리트 구조물에 사용되고 특히 연약지반 보강용 등 폭넓게 사용된다.Since the plastic plate structure manufactured in this way has high tensile strength in any direction because the stretching occurs simultaneously in all directions, it is widely used in civil engineering, concrete structures, and especially for soft ground reinforcement.
그러나 이와 같이 플라스틱판체를 연신시킬 때 전부분을 모두 동시에 연신시켜야 하기 때문에 큰 장치가 구비되는 등 비 경제적인 문제점이 있었다.However, when the plastic sheet is drawn as described above, all parts must be drawn at the same time, so that a large device is provided.
본 발명은 종래의 문제점을 해소하기 위해 창안된 것으로, 그 목적은 압출가공된 플라스틱 판체에 다수개의 구멍을 종·횡방향으로 나란히 형성한 후 이를 종방향으로 연신시킨 후 횡근부분에만 부분적으로 횡방향의 연신을 실시하여 전단강도를 높일 수 있도록 한 플라스틱 망상 구조물 및 그 제조방법을 제공하는데 있다.The present invention was devised to solve the conventional problems, and its object is to form a plurality of holes in the longitudinally and transverse side by side in the extruded plastic plate, and then stretch them in the longitudinal direction and then only partially transverse to the transverse part. The present invention provides a plastic network structure and a method of manufacturing the same to increase the shear strength by drawing.
도 1은 본 발명에 따른 망상 구조물 구조도.1 is a structural diagram of a network structure according to the present invention.
도 2는 본 발명에 따른 망상구조물의 단면도.2 is a cross-sectional view of the network structure according to the present invention.
도 3은 본 발명의 다른 실시예에 따른 망상구조물의 구조도.3 is a structural diagram of a network structure according to another embodiment of the present invention.
도 4는 도 3의 망상구조물 단면도.4 is a cross-sectional view of the network structure of FIG.
도 5는 본 발명 망상체 구조물을 고리를 이용하여 연신시키는 공정도.Figure 5 is a process drawing for stretching the present invention network structure using a ring.
도 6은 본 발명 망상체 구조물에 돌출부가 형성된 상태의 요부확대도.Figure 6 is an enlarged view of the main portion of the projecting portion is formed in the network structure of the present invention.
*** 도면의 주요 부분에 대한 부호의 설명 ****** Explanation of symbols for the main parts of the drawing ***
10 - 플라스틱 판체 12 - 구멍 14 - 횡근10-plastic plate 12-hole 14-transverse
15 - 종근 16 - 지지대 17 - 누름대15-Chong Keun 16-Support 17-Presser
18 - 보강재18-reinforcement
상기 목적을 달성하기 위한 본 발명은,The present invention for achieving the above object,
플라스틱 판체를 압출성형하면서 규칙적으로 구멍을 내어 이를 종방향으로 연신시켜 종근과 횡근이 이루어지는 플라스틱 망상 구조물을 제조함에 있어서,In manufacturing a plastic network structure in which the longitudinal and transverse muscles are formed by extruding the plastic sheeting regularly and making holes in the longitudinal direction and stretching them in the longitudinal direction,
상기 종근방향으로 연신시킨 후 횡근의 저면에 지지대를 위치시켜 그 상부에서 프레스로 눌러 횡근만 횡방향으로 연신시키므로써 달성된다.After stretching in the longitudinal direction, it is achieved by placing a support on the bottom of the transverse muscles and pressing the upper portion of the transverse muscles in a press to stretch the transverse muscles in the transverse direction.
또한 본 발명은 플라스틱 판체를 압출할 때 종근에 해당되는 부위의 내부에 보강재를 심어 일방향으로 연신시킨 후 타방향으로 연신시키지 않더라도 전단강도를 향상시킬 수 있도록 한 것이다.In addition, the present invention is to improve the shear strength even if not stretched in one direction after planting a reinforcing material in the inside of the portion corresponding to the longitudinal root when extruding the plastic plate body.
이하, 본 발명의 실시예를 첨부된 도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
도 1은 본 발명에 따른 망상 구조물 구조도이고, 도 2는 본 발명에 따른 망상구조물의 단면도이다.1 is a structural diagram of a network structure according to the present invention, Figure 2 is a cross-sectional view of the network structure according to the present invention.
본 발명의 압출가공에 의해 플라스틱 판체(10)를 성형한 후 일정한 간격으로 구멍(12)을 형성하고 이를 양측으로 연신시킨다. 연신된 플라스틱판체(10)는 늘어나는 방향으로 분자연결고리가 형성됨에 따라 종방향으로의 전단강도가 높아진다.After molding the plastic plate body 10 by the extrusion process of the present invention to form a hole 12 at regular intervals and stretch it to both sides. As the stretched plastic sheeting body 10 is formed with molecular linkages in the extending direction, the shear strength in the longitudinal direction is increased.
한편, 플라스틱 판체(10)가 늘어나면 종근(14)은 길게 늘어나고 각 종근(14)사이와 횡근(15) 사이로 긴 타원형 구멍(12)이 형성된다. 또 종근(14)은 그 연신량이 많아 얇아지게 되지만 횡근(15)은 일방향으로 미량만 연신된다. 그렇더라도 횡근(15)은 약간의 연신량이 있고 또 두께가 있으므로 연신되는 직각방향으로 작용하는 전단력이 발생하더라도 부러지지는 않는다.On the other hand, when the plastic plate body 10 is extended, the longitudinal roots 14 are elongated, and long oval holes 12 are formed between each longitudinal roots 14 and the transverse muscles 15. In addition, the longitudinal root 14 has a large amount of stretching, so that the thinner, the transverse muscle 15 is drawn only a small amount in one direction. Even so, since the transverse muscle 15 has a slight stretching amount and a thickness, it does not break even if a shear force acting in the direction perpendicular to the stretching occurs.
하지만 연신되는 직각방향으로 작용하는 전단력에는 취약하므로 부러지기가 쉽다.However, they are susceptible to shear forces acting in the direction perpendicular to the drawing, so they are easily broken.
이를 방지하기 위해 횡근(15)의 하부에 지지대(16)를 위치시킨 후 상부에서 누름대(17)를 대고 프레스로 가압하여 횡방향의 연신을 유도하므로 횡방향의 조직을 이완시킨다. 이와 같이 하면 연결고리가 횡방향과 종방향 모두 발생되기 때문에 어떠한 방향으로도 부러지지 않는 견고한 플라스틱 망상 구조물을 얻을 수 있다.In order to prevent this, the support 16 is positioned at the lower part of the transverse muscle 15, and then presses the presser bar 17 on the upper part to press the press to induce the transverse direction so that the tissue in the transverse direction is relaxed. This produces a rigid plastic network structure that does not break in any direction because the linkage occurs in both the transverse and longitudinal directions.
본 발명의 다른 실시예로서, 도 3 및 도 4와 같이 별도의 보강재(18)를 이용하여 망상 구조물을 보강하므로써 단방향으로만 연신시키더라도 횡방향의 높은 전단강도를 유지할 수 있도록 할 수 있다.As another embodiment of the present invention, it is possible to maintain a high shear strength in the transverse direction even when stretching only in one direction by reinforcing the network structure using a separate reinforcing member 18 as shown in Figs.
즉, 플라스틱 판체(10)를 압출성형시킬 때 종근(15)이 형성될 부분의 내부로 별도의 보강재(18)를 심어둔 후 구멍(12)을 뚫고 횡방향으로 연신시킨다.이때 보강재(18)는 재질에 관계없이 종근이 필요로하는 전단강도를 가질 정도의 강도를 갖는 재질이면 충분하며, 구체적으로 플라스틱 판체(10)와 동일한 재질을 미리 신장시켜 연신된 방향으로 분자연결고리를 형성한 것으로 보강재를 이루는 것이 바람직하다.That is, when extruding the plastic plate 10, a separate reinforcing material 18 is planted inside the portion where the longitudinal root 15 is to be formed, and then, the hole 12 is drilled and stretched in the transverse direction. Regardless of the material, the material having a strength sufficient to have the shear strength required by the longitudinal root is sufficient. Specifically, the same material as that of the plastic plate 10 is elongated to form a molecular linkage in the stretched direction. It is desirable to achieve.
이와 같이 하면 종방향의 연신이 없더라도 종근에 작용하는 전단력을 보강재(18)를 통해 충분히 견딜 수 있기 때문에 마치 종근을 연신시킨 것과 같은 효과를 얻을 수가 있다.In this way, even if there is no longitudinal stretching, the shear force acting on the longitudinal muscle can be sufficiently endured through the reinforcing material 18, so that the effect as if the longitudinal muscle is stretched can be obtained.
한편, 도 5는 본 발명 망상체 구조물을 고리를 이용하여 연신시키는 공정도이고, 도 6은 본 발명 망상체 구조물에 돌출부가 형성된 상태의 요부확대도로서, 플라스틱 망상 구조물의 설치시 마찰계수를 높이기 위해 플라스틱 판체방향으로 연신시킬 때 도 5와 같이 각 구멍에 고리를 걸어 당기도록 하여 고리 접촉부에 상부 또는 하부로 도 6과 같이 고리자국의 돌출부(19)가 형성되도록 하였다.On the other hand, Figure 5 is a process drawing for stretching the network structure of the present invention by using a ring, Figure 6 is an enlarged view of the main portion in the state in which the projecting portion is formed in the network structure of the present invention, the plastic plate to increase the coefficient of friction when installing the plastic network structure When extending in the direction as shown in Figure 5 by hooking the hook to each hole to the ring contact to the upper or lower portion as shown in Figure 6 to form a projection 19 of the ring marks.
이러한 돌출부(19)에 의해 차양, 곡물가리개, 방설벽, 방풍막, 클래딩 재료, 반광스크린, 방충스크린, 지면 등에 적용하여 더욱더 안정적인 지지력을 확보할 수 있게 된다.By the protrusions 19, it is possible to secure more and more stable supporting force by applying to the sunshade, the grain shade, the windshield, the windbreak, the cladding material, the semi-reflective screen, the insect screen, the ground.
이상에서 살펴본 바와 같이 본 발명은 압출가공된 플라스틱 판체에 다수개의 구멍을 종·횡방향으로 나란히 형성한 후 이를 횡방향의 연신을 실시하고 종근의 내부에는 보강재를 심어 두었기 때문에 어떠한 방향으로도 부러지지 않는 높은 강도를 가질 수 있는 견고한 플라스틱 망상 구조물을 이룰 수가 있다.As described above, in the present invention, a plurality of holes are formed side by side in the longitudinal and transverse directions in the extruded plastic plate, and then they are stretched in the transverse direction and broken in any direction because the reinforcement is planted inside the longitudinal root. It is possible to achieve a rigid plastic mesh structure that can have high strength.
Claims (4)
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| Application Number | Priority Date | Filing Date | Title |
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| KR20000028764 | 2000-05-26 | ||
| KR1020000028764 | 2000-05-26 |
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| KR20010107490A KR20010107490A (en) | 2001-12-07 |
| KR100387215B1 true KR100387215B1 (en) | 2003-06-12 |
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| KR10-2000-0044054A Expired - Fee Related KR100387215B1 (en) | 2000-05-26 | 2000-07-29 | A network structure of plastic and the manufacturing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3255065A (en) * | 1961-06-02 | 1966-06-07 | Fmc Corp | Method for making a composite film |
| US5053264A (en) * | 1988-12-20 | 1991-10-01 | Rdb Plastotecnica S.P.A. | Plastic material net structure |
| US5269631A (en) * | 1989-09-14 | 1993-12-14 | Netlon Limited | Plastics material mesh structures |
| KR0137014B1 (en) * | 1989-09-14 | 1998-04-25 | 비비엔 제니퍼 메르세르 | Geogrid and its manufacturing method |
| EP0999037A2 (en) * | 1998-11-06 | 2000-05-10 | Bridgestone Corporation | Resin net and its production method, and drawn product of polyethylene based resin |
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2000
- 2000-07-29 KR KR10-2000-0044054A patent/KR100387215B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3255065A (en) * | 1961-06-02 | 1966-06-07 | Fmc Corp | Method for making a composite film |
| US5053264A (en) * | 1988-12-20 | 1991-10-01 | Rdb Plastotecnica S.P.A. | Plastic material net structure |
| US5269631A (en) * | 1989-09-14 | 1993-12-14 | Netlon Limited | Plastics material mesh structures |
| KR0137014B1 (en) * | 1989-09-14 | 1998-04-25 | 비비엔 제니퍼 메르세르 | Geogrid and its manufacturing method |
| EP0999037A2 (en) * | 1998-11-06 | 2000-05-10 | Bridgestone Corporation | Resin net and its production method, and drawn product of polyethylene based resin |
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