KR20110078980A - Method and substitude for reinforcing rod - Google Patents

Method and substitude for reinforcing rod Download PDF

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Publication number
KR20110078980A
KR20110078980A KR1020090135918A KR20090135918A KR20110078980A KR 20110078980 A KR20110078980 A KR 20110078980A KR 1020090135918 A KR1020090135918 A KR 1020090135918A KR 20090135918 A KR20090135918 A KR 20090135918A KR 20110078980 A KR20110078980 A KR 20110078980A
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South Korea
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thermoplastic resin
glass fiber
bundle
manufacturing
fiber roving
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KR1020090135918A
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Korean (ko)
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KR101248933B1 (en
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신학기
김근호
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경남정보대학산학협력단
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
    • 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
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/16—Straightening or flattening
    • B29C53/20—Straightening or flattening of tubes
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: A substitute for a reinforcing bar and a manufacturing method thereof are provided to manufacture the substitute of a reinforcing bar by extrusion-molding glass fiber roving using thermoplastic resin. CONSTITUTION: A substitute for a reinforcing bar comprises glass fiber rovings(10), first thermoplastic resins(12), and second thermoplastic resins(20). Extrusion materials are formed by permeating the first thermoplastic resins into the glass fiber rovings and extrusion-molding the permeated first thermoplastic resins. The substitute is formed by collecting the extrusion materials and extrusion-molding the collected extrusion materials using the second thermoplastic resins.

Description

철근대용물 및 그 제조방법{Method and Substitude for reinforcing Rod}Rebar Substitutes and Manufacturing Method therefor {Method and Substitude for reinforcing Rod}

본 발명은 철근대용물 및 그 제조방법에 관한 것으로, 더욱 상세하게는 강도가 센 유리섬유로빙을 열가소성수지로 압출성형하여 철근대용물을 제조함으로써, 철근에 상응하는 강도를 가지며, 제조가 용이할 뿐만 아니라 배근작업이 용이한 철근대용물 및 그 제조방법에 관한 것이다.The present invention relates to a rebar substitute and a method for manufacturing the same, and more particularly, to produce a rebar substitute by extruding a glass fiber roving having a high strength with a thermoplastic resin, and having a strength corresponding to reinforcing bar, and easy to manufacture. In addition, the present invention relates to a rebar substitute easy to reinforcement work and a method of manufacturing the same.

일반적으로 토목 또는 건축용으로 사용되고 있는 철근콘크리트는 콘크리트의 내부에 철근을 배근하여 콘크리트의 인장 응력을 보완할 수 있도록 하는 것으로서, 내구성이라든가 내화(耐火) 그리고 내진(耐震) 성능이 우수하다.Reinforced concrete, which is generally used for civil engineering or construction, is to reinforce reinforcement in concrete to compensate for the tensile stress of concrete, and has excellent durability, fire resistance, and seismic resistance.

그러나, 종래의 철근콘크리트는 강도에 비해서 자중이 크기 때문에 중·고층건물을 신축할 때에는 그 자중을 지지할 수 있도록 아래층의 보나 기둥의 단면을 크게 제작해야만 하는 문제점이 있었다.However, the conventional reinforced concrete has a problem of having to make a large cross section of a beam or column in a lower layer so that the weight of a medium or high-rise building can be supported when the medium- and high-rise building is constructed.

또한, 철근콘크리트로 사용되고 있는 철근은 댐이라든가 대형건물과 같이 건축물이 대형인 경우에 철근의 두께가 비교적 두꺼운 것을 이용하게 되는데, 이때 건축물의 형상이 곡선이 많이 들어가거나 절곡이 많이 있는 경우에는 배근작업이 매우 난해한 문제점이 있었다. 그리고, 철근의 중량이 매우 무겁기 때문에 이송작 업이 매우 곤란하게 되는 문제점이 있었다. In addition, the reinforcing steel used as reinforced concrete is used when the structure is large, such as a dam or a large building, the thickness of the reinforcing bar is relatively thick. In this case, when the shape of the building includes a lot of curves or a lot of bending, the reinforcement work is performed. There was a very difficult problem. And, because the weight of the rebar is very heavy there was a problem that the transfer operation is very difficult.

더욱이, 이러한 철근들은 쉽게 부식이 발생하는 것들이기 때문에 건축물의 안전성에도 문제가 발생할 우려가 있었다.Moreover, since these rebars are easily corroded, there was a concern that the safety of the building would be problematic.

본 발명은 이러한 종래의 문제점들을 해소하기 위하여 안출된 것으로서, 인장 강도와 내구성이 뛰어난 유리섬유로빙을 소성변형율이 우수한 열가소성 수지를 이용하여 다발형태로 묶어 철근대용물로 제조함으로써, 경량이면서도 배근을 용이하게 할 수 있을 뿐만 아니라 기능에 맞게 다양한 조합으로 제조가능한 철근대용물 및 그 제조방법을 제공하는데 그 목적이 있다.The present invention has been made in order to solve such a conventional problem, by making a bundle of glass fiber roving with excellent tensile strength and durability in the form of a bundle using a thermoplastic resin excellent in plastic strain, it is lightweight and easy reinforcement Not only that, but also to provide a rebar substitute and a method of manufacturing the same can be manufactured in various combinations according to the function.

이러한 목적을 달성하기 위한 본 발명에 따른 철근대용물의 제조방법은, 유리섬유로빙에 제1열가소성수지가 함침되도록 압출성형하여 압출물을 형성하고, 상기 압출물을 한 다발로 모아서 제2열가소성수지로 압출성형하여 이루어진 것을 특징으로 한다.In order to achieve the above object, the present invention provides a method for manufacturing a reinforcing bar, which is formed by extruding a glass fiber roving to impregnate a first thermoplastic resin, and gathers the extrudate in a bundle to form a second thermoplastic resin. It is characterized by consisting of extrusion molding.

특히, 제1열가소성수지 및 제2열가소성수지는 PP, 폴리에틸렌(PE), 폴리부틸렌테레프탈레이트(PET), 폴리염화비닐(PVC), 폴리스틸렌(PS), ABS, 스티렌 아크릴로니트릴(SAN), 나이론, 폴리부틸렌 테레프탈레이트(PBT), 폴리카보네이트(PC), 또는 열가소성 우레탄(TPU)인 것을 특징으로 한다. 그리고, 제1열가소성수지는 유리섬유로빙에 대하여 3~45%인 것을 특징으로 한다.In particular, the first thermoplastic resin and the second thermoplastic resin are PP, polyethylene (PE), polybutylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), ABS, styrene acrylonitrile (SAN), Nylon, polybutylene terephthalate (PBT), polycarbonate (PC), or thermoplastic urethane (TPU). And, the first thermoplastic resin is characterized in that 3 to 45% relative to the glass fiber roving.

또한, 제2열가소성수지는 5~20㎜의 단유리섬유를 함유하는 것을 특징으로 한다. 이때, 단유리섬유는 10~70% 함유된 것을 특징으로 한다. 그리고, 제2열가소성수지의 성형시 콘크리트와의 접착력을 향상시키기 위하여 리브 및 마디가 더 형성 되어 있는 것을 특징으로 한다.In addition, the second thermoplastic resin is characterized by containing a short glass fiber of 5 ~ 20mm. At this time, the single glass fiber is characterized in that it contains 10 to 70%. In addition, ribs and nodes are further formed to improve adhesion to concrete when forming the second thermoplastic resin.

마지막으로, 본 발명에 따른 철근대용물은, 열가소성수지가 함침된 유리섬유로빙으로 다발을 만들고, 다발에 단유리 섬유가 함유된 열가소성수지로 압출성형하여 이루어진 것을 특징으로 한다.Finally, the reinforcing bar according to the present invention is characterized in that the bundle is made of a glass fiber roving impregnated with a thermoplastic resin, by extrusion molding a thermoplastic resin containing a single glass fiber in the bundle.

본 발명에 따르면 다음과 같은 효과가 있다.According to the present invention has the following effects.

첫째, 기존철근과 같이 쉽게 부식이 발생하지 않게 되므로, 철근의 수명이 길어질 뿐만 아니라 건물의 붕괴와 같은 위험요소를 방지하는 효과가 있다.First, since corrosion does not occur as easily as conventional reinforcing bars, not only the life of the reinforcing bars is long but also there is an effect of preventing risk factors such as collapse of buildings.

둘째, 열가소성 수지를 이용하여 철근대용물을 제조하기 때문에 이를 다시 회수하여 재활용할 수 있는 효과가 있다.Second, since the reinforcing bar is manufactured using a thermoplastic resin, it is effective to recover and recycle it.

셋째, 철근대용물이 사용되는 용도에 맞게 열가소성 수지를 다양한 색상으로 제작할 수 있다.Third, the thermoplastic resin may be manufactured in various colors to meet the purpose of using the reinforcing bars.

넷째, 철근대용물을 이용한 배근작업시 쉽게 밴딩시켜 사용할 수 있게 되므로, 시공이 매우 용이할 뿐만 아니라, 무게가 비교적 경량체로 제작되는 것이기 때문에 이송작업 또한 매우 용이하다.Fourth, since it can be easily used to bend when the reinforcement work using the reinforcing bar, not only the construction is very easy, but also because the weight is made of a relatively lightweight body is also very easy to transport.

다섯째, 플라스틱이 갖는 고유한 유연성으로 인하여 진동에 의하여 시멘트가 분리되는 것을 막을 수 있어 내진설계에 매우 유리하다.Fifth, due to the inherent flexibility of plastic can prevent the separation of the cement by vibration, which is very advantageous for seismic design.

이하, 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 보다 상세히 설명하기로 한다. 이에 앞서, 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적 이거나 사전적인 의미로 한정해서 해석되어서는 아니 되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly interpret the concept of terms in order to best explain their invention in the best way possible. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

따라서 본 명세서에 기재된 실시예와 도면에 도시된 구성은 본 발명의 가장 바람직한 일 실시예에 불과할 뿐이고 본 발명의 기술적 사상을 모두 대변하는 것은 아니므로, 본 출원시점에 있어서 이들을 대체할 수 있는 다양한 균등물과 변형예들이 있을 수 있음을 이해하여야 한다.Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be water and variations.

도 1은 본 발명에 따라 철근대용물이 제조되는 순서를 보여주기 위한 사시도를 나타내는 것이다.Figure 1 shows a perspective view for showing the order in which the reinforcing bar is manufactured according to the present invention.

본 발명에 따른 철근대용물(100)의 제조방법은, 크게 다음의 3단계에 걸쳐 이루어진다. 첫째, 유리섬유로빙(10)에 제1열가소성수지(12)를 압출기로 함침시켜 압출물을 형성하고, 둘째 제1열가소성수지(12)가 함침된 유리섬유로빙(10)으로 다발(B)을 만든 다음, 셋째 이 다발(B)에 제2열가소성수지(20)를 압출성형하여 제작한다.The manufacturing method of the reinforced substitute 100 according to the present invention is largely made through the following three steps. First, the glass fiber roving (10) is impregnated with a first thermoplastic resin 12 by an extruder to form an extrudate, and the second bundle (B) with a glass fiber roving (10) impregnated with a first thermoplastic resin (12) Next, the second thermoplastic resin 20 is extrusion molded into the third bundle (B).

이하, 이들 각 단계별로 보다 구체적으로 설명하면 다음과 같다.Hereinafter, the steps will be described in more detail as follows.

여기서, 유리섬유로빙(10)이란 유리섬유(11)의 직경이 5~20㎛의 필라멘트를 수백~수천가닥을 집속하여 용도에 맞게 소정의 번수(Tex)를 균일하게 롤 형태로 감 아놓은 것을 말한다. Here, the glass fiber roving (10) is a glass fiber (11) with a diameter of 5 ~ 20㎛ filaments are concentrated by hundreds to thousands of strands to wrap a predetermined number (Tex) uniformly rolled to fit the purpose Say.

본 발명에 따른 철근대용물(100)의 제1단계는, 도 1의 (a)에서와 같이, 수지압출기를 이용하여 복수의 유리섬유(11)로 이루어진 유리섬유로빙(10)에 제1열가소성수지(12)를 함침하는 단계이다. 즉, 롤러에 권취된 유리섬유로빙(10)을 통상의 수지압출기(미도시됨)를 통과하게 하면서 그 표면에 제1열가소성수지(12)가 함침되도록 한 다음, 냉각시켜서 다시 롤형태로 권취시킨다. 도 1의 (a)에서 도면부호 "10"은 제1열가소성수지(12)가 함침된 압출물인 유리섬유로빙(10)을 나타낸다.The first step of the reinforcing bar 100 according to the present invention, as shown in Figure 1 (a), the first thermoplastic resin in the glass fiber roving (10) made of a plurality of glass fibers 11 using a resin extruder It is a step of impregnating the resin 12. That is, while passing the glass fiber roving 10 wound on the rollers through a conventional resin extruder (not shown), the surface of the first thermoplastic resin 12 is impregnated, and then cooled and wound again in a roll form. . In FIG. 1A, reference numeral 10 denotes a glass fiber roving 10, which is an extrudate impregnated with a first thermoplastic resin 12.

여기서, 제1열가소성수지(12)는 열가소성수지라면 어떠한 것이라도 이용할 수 있으나, 예시적으로 폴리에틸렌(PE), 폴리부틸렌테레프탈레이트(PET), 폴리염화비닐(PVC), 폴리스틸렌(PS), ABS수지, 스티렌 아크릴로니트릴(SAN), 나이론, 폴리부틸렌 테레프탈레이트(PBT), 폴리카보네이트(PC), 및 열가소성 우레탄(TPU)을 이용할 수 있다.Here, the first thermoplastic resin 12 may be used as long as it is a thermoplastic resin, but illustratively polyethylene (PE), polybutylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), ABS Resin, styrene acrylonitrile (SAN), nylon, polybutylene terephthalate (PBT), polycarbonate (PC), and thermoplastic urethane (TPU) can be used.

또한, 제1열가소성수지(12)는 유리섬유로빙(10)에 대하여 3~45% 범위 내에서 함침시키는 것이 바람직하다. 이는 제1열가소성수지(12)가 3% 이하이면 압출이라든가 사출과 같은 작업공정이 제대로 이루어지지 않게 되며, 반대로 45% 이상인 경우에는 가소성에는 효과적이나 강도라든가 내구성이 저하되기 때문에 이를 방지하기 위함이다.In addition, the first thermoplastic resin 12 is preferably impregnated in the range of 3 to 45% with respect to the glass fiber roving 10. This is because when the first thermoplastic resin 12 is 3% or less, a work process such as extrusion or injection may not be performed properly. On the contrary, when the first thermoplastic resin 12 is 45% or more, it is effective for plasticity but strength and durability are prevented.

그리고, 이러한 열가소성수지를 이용하여 압출성형하는 경우 수지에 용해제와 결합제 그리고 안정제 및 기타 다양한 첨가제가 첨가되게 되는데, 이는 통상적 으로 열가소성수지를 이용하는 기술분야에서 이미 널리 알려져 있는 것으로 여기서는 그 상세한 설명을 생략한다.In the case of extrusion molding using such a thermoplastic resin, a solvent, a binder, a stabilizer, and various additives are added to the resin, which is generally known in the art of using a thermoplastic resin, and a detailed description thereof is omitted herein. .

제2단계는 유리섬유로빙(10)을 이용하여 다발(B)을 만드는 단계이다. 이때의 유리섬유로빙(10)은 제1열가소성수지(12)를 압출성형기를 통해 함침된 압출물을 말한다.The second step is to make a bundle (B) using a glass fiber roving (10). In this case, the glass fiber roving 10 refers to an extrudate impregnated with the first thermoplastic resin 12 through an extruder.

특히, 도 1의 (b)와 같은 다발(B)은 본 발명에 따른 철근대용물(100)의 직경에 따라서 유리섬유로빙(10)의 갯수가 달라진다. 즉, 통상적으로 철근은 배근하는 곳에 가해지는 하중 등을 고려하여 그 두께 및 배근간격 그리고 배근량이 결정되게 되는데, 상기 다발(B)은 이러한 철근의 두께를 고려하여 다발(B)을 구성하는 유리섬유로빙(10)의 갯수를 결정하게 되는 것이다.In particular, the bundle (B) as shown in Figure 1 (b) is the number of glass fiber roving (10) varies depending on the diameter of the reinforcing rod substitute 100 according to the present invention. That is, in general, the reinforcing bar is determined in consideration of the load applied to the reinforcement, such as thickness and reinforcement spacing and the amount of reinforcement, the bundle (B) in consideration of the thickness of the reinforcement glass fiber constituting the bundle (B) The number of rovings 10 will be determined.

제3단계는 다발(B)에 제2열가소성수지(20)로 압출성형하는 단계이다. 이때, 사용되는 제2열가소성수지(20)는 상기 제1열가소성수지(12)로서 사용되는 열가소성수지 중에서 택일적으로 사용한다.The third step is extrusion molding the second thermoplastic resin 20 into the bundle (B). In this case, the second thermoplastic resin 20 to be used is alternatively used among the thermoplastic resins used as the first thermoplastic resin 12.

특히, 제2열가소성수지(20)에는 콘크리트 보강용으로 많이 사용되는 단유리섬유를 함유한 것을 이용한다. 이때, 단유리섬유는 5~20㎜인 것을 사용하며, 제2열가소성수지(20)에 대하여 10~70%의 비율로 함유시켜 사용한다. 이러한 단유리섬유는 인장강도라든가 휨강도 그리고 피로강도를 개선하는데 유리하다.In particular, the second thermoplastic resin 20 is used that contains short glass fiber which is used for concrete reinforcement. At this time, the short glass fiber is used is 5 ~ 20㎜, it is used by containing in a ratio of 10 to 70% relative to the second thermoplastic resin (20). These short glass fibers are beneficial for improving tensile strength, flexural strength and fatigue strength.

이러한 제2열가소성수지(20)는 상술한 제1열가소성수지(12)와 마찬가지 방법 으로 압출성형하여 도 1의 (c)와 같이 제작한다.The second thermoplastic resin 20 is extrusion-molded in the same manner as the first thermoplastic resin 12 described above and manufactured as shown in FIG.

이때, 본 발명의 바람직한 실시예에서, 제2열가소성수지(20)의 압출성형시 철근대용물(100)의 표면에 마디라든가 리브와 같이 콘크리트와의 접착력을 높일 수 있도록 압출성형하는 것이 바람직하다. 즉, 도 1의 (c)는 단면이 원형인 원형철근의 예를 보여주고 있으나, 통상적으로 이형철근이라고 불리는 철근과 같이 그 표면에 길이방향으로 한쌍의 리브를 형성하고, 이들 리브 사이에 마디를 형성하여 그 접착면적을 최대한으로 넓힐 수 있게 한 것이다.At this time, in the preferred embodiment of the present invention, the extrusion molding of the second thermoplastic resin 20 is preferably extruded so as to increase the adhesive strength with concrete, such as ribs or ribs on the surface of the rebar substitute 100. That is, Figure 1 (c) shows an example of a circular rebar having a circular cross-section, but a pair of ribs are formed on the surface in the longitudinal direction, such as a reinforcing bar commonly referred to as a deformed reinforcing bar, and a node is formed between these ribs. It is formed so that the bonding area can be maximized.

한편, 본 발명은 상술한 방법에 의하여 이루어진 철근대용물(100)을 포함한다.On the other hand, the present invention includes a rebar substitute 100 made by the above-described method.

도 1은 본 발명에 따라 철근대용물이 제조되는 순서를 보여주기 위한 사시도.1 is a perspective view for showing the order in which the reinforcing bar is manufactured according to the present invention.

<도면의 주요부분에 대한 도면부호의 간단한 설명><Brief description of reference numerals for the main parts of the drawings>

10 : 유리섬유로빙10: glass fiber roving

11 : 유리섬유11: glass fiber

12 : 제1열가소성수지12: first thermoplastic resin

20 : 제2열가소성수지20: second thermoplastic resin

100 : 철근대용물100: rebar rod

B : 다발B: bunch

Claims (7)

유리섬유로빙(10)에 제1열가소성수지(12)가 함침되도록 압출성형하여 압출물을 형성하고, 상기 압출물을 한 다발로 모아서 제2열가소성수지(20)로 압출성형하여 이루어진 것을 특징으로 하는 철근대용물의 제조방법.Extruded to form a glass fiber roving 10, the first thermoplastic resin 12 is impregnated to form an extrudate, it is characterized in that made by extruding the extrudate to a second thermoplastic resin 20 by gathering the extrudate in one bundle Method for manufacturing rebar replacement. 제 1 항에 있어서,The method of claim 1, 상기 제1열가소성수지(12) 및 상기 제2열가소성수지(20)는 PP, 폴리에틸렌(PE), 폴리부틸렌테레프탈레이트(PET), 폴리염화비닐(PVC), 폴리스틸렌(PS), ABS, 스티렌 아크릴로니트릴(SAN), 나이론, 폴리부틸렌 테레프탈레이트(PBT), 폴리카보네이트(PC), 또는 열가소성 우레탄(TPU)인 것을 특징으로 하는 철근대용물의 제조방법.The first thermoplastic resin 12 and the second thermoplastic resin 20 are PP, polyethylene (PE), polybutylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), ABS, styrene acrylic Ronitrile (SAN), nylon, polybutylene terephthalate (PBT), polycarbonate (PC), or thermoplastic urethane (TPU). 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 제1열가소성수지(12)는 상기 유리섬유로빙에 대하여 3~45%인 것을 특징으로 하는 철근대용물의 제조방법.The first thermoplastic resin (12) is a method of manufacturing a steel substitute, characterized in that 3 to 45% with respect to the glass fiber roving. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 제2열가소성수지(20)는 5~20㎜의 단유리섬유를 함유하는 것을 특징으로 하는 철근대용물의 제조방법.The second thermoplastic resin (20) is a method for producing a reinforcing rod characterized in that it contains short glass fibers of 5 ~ 20mm. 제 4 항에 있어서,The method of claim 4, wherein 상기 단유리섬유는 10~70% 함유된 것을 특징으로 하는 철근대용물의 제조방법.The single glass fiber is a manufacturing method of reinforcing rods, characterized in that it contains 10 to 70%. 제 1 항에 있어서, The method of claim 1, 상기 제2열가소성수지(20)의 성형시 콘크리트와의 접착력을 향상시키기 위하여 리브 및 마디가 더 형성되어 있는 것을 특징으로 하는 철근대용물의 제조방법.When forming the second thermoplastic resin 20, ribs and nodes are further formed to improve the adhesive strength with concrete, characterized in that the manufacturing method of the reinforcing rod. 열가소성수지가 함침된 유리섬유로빙으로 다발을 만들고, 상기 다발에 단유리 섬유가 함유된 열가소성수지로 압출성형하여 이루어진 것을 특징으로 하는 철근대용물.Reinforcing rods, characterized in that the bundle is made of a glass fiber roving impregnated with a thermoplastic resin, and extrusion molding of the thermoplastic resin containing a single glass fiber in the bundle.
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