KR20170003694U - Hydraulic fluid tube - Google Patents

Hydraulic fluid tube Download PDF

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Publication number
KR20170003694U
KR20170003694U KR2020160005531U KR20160005531U KR20170003694U KR 20170003694 U KR20170003694 U KR 20170003694U KR 2020160005531 U KR2020160005531 U KR 2020160005531U KR 20160005531 U KR20160005531 U KR 20160005531U KR 20170003694 U KR20170003694 U KR 20170003694U
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layer
tube
rubber
hydraulic oil
polyurethane
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KR2020160005531U
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Korean (ko)
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홍춘펑
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티안진 한성 러버 아이템 컴파니 리미티드
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Publication of KR20170003694U publication Critical patent/KR20170003694U/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a general shape other than plane
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B25/00—Layered products comprising a layer of natural or synthetic rubber
    • B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2377/00—Polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2379/00—Other polymers having nitrogen, with or without oxygen or carbon only, in the main chain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2597/00—Tubular articles, e.g. hoses, pipes

Abstract

본 고안은 내부에서 외부로 나일론 튜브층, 폴리우레탄층, 고무층I, 보강층, 고무층II을 포함하고, 상기 폴리우레탄층은 상기 고무층I과 상기 나일론 튜브층을 일체로 접착시키는 유압유 튜브를 제공한다. 폴리우레탄는 고무의 고탄성, 고강도를 가진 사출 가공 가능한 재료로서, 양호한 내피로성과 내온성을 구비한다. 폴리우레탄층은 나일론 튜브층과 고무층I을 접착시켜 유압유 튜브 내벽이 나일론 튜브층이 되도록 할 수 있어, 압력이 빠르게 전달되고 소모가 적다. 폴리우레탄층은 중간층인 바, 비교적 좋은 탄성을 가지고 있어 나일론 튜브가 접혀 막히는 것을 초보적으로 방지하는 작용을 하고, 이밖에 폴리우레탄층의 비교적 양호한 탄성은 내부층 및 외부층의 상이한 변형 정도를 완화시킬 수 있어, 나일론 튜브층이 고무층에서 박리되는 것을 방지하며, 유압유 튜브의 강도를 증가시키고, 아울러, 유압유 튜브의 외벽은 고무층이 되도록 할 수 있는 바, 탄성이 크기에 전체 유압유 튜브가 접혀 막히는 것을 방지하므로, 유압유 튜브가 나일론 튜브와 고무 튜브의 장점을 겸비하도록 하여 종합적인 성능이 우수하다.The present invention provides a hydraulic oil tube that includes a nylon tube layer, a polyurethane layer, a rubber layer I, a reinforcing layer, and a rubber layer II from the inside to the outside, and the polyurethane layer integrally bonds the rubber layer I and the nylon tube layer. Polyurethane is an injection-processable material having high elasticity and high strength of rubber, and has good endurance against wear and weather resistance. The polyurethane layer bonds the nylon tube layer and the rubber layer I so that the inner wall of the hydraulic oil tube can be a nylon tube layer, and the pressure is transmitted quickly and consumed less. Since the polyurethane layer is an intermediate layer, it has a relatively good elasticity, and acts to prevent the nylon tube from being clogged, and the relatively good elasticity of the polyurethane layer also alleviates the degree of deformation of the inner layer and the outer layer It is possible to prevent the nylon tube layer from being peeled off from the rubber layer and to increase the strength of the hydraulic oil tube and to make the outer wall of the hydraulic oil tube to be a rubber layer so as to prevent the entire hydraulic oil tube from being clogged Because hydraulic oil tube combines the advantages of nylon tube and rubber tube, it has excellent overall performance.

Description

유압유 튜브{HYDRAULIC FLUID TUBE}Hydraulic oil tube {HYDRAULIC FLUID TUBE}

본 고안은 고압 호스에 관한 것이고, 특히 유압유 튜브에 관한 것이다.The present invention relates to a high pressure hose, and more particularly to a hydraulic oil tube.

유압 기기는 동력 전달 장치로서, 굴착기, 로더(loader), 로드 롤러(road roller) 등 기기에서 응용 범위가 매우 넓다. 유압유를 수송하는 유압유 튜브는 대부분 기계 암을 따라 배치되고, 기계 암이 신축될 때 그 굴곡 부분의 유압유 튜브가 외부로 노출되기 쉽고, 일부 열악한 작업 환경에서 기계 암은 쉽게 외력의 작용을 받아 유압유 튜브에 압력 또는 안장력이 인가되어 변형되게 하며, 심지어 스크래치 또는 파손이 발생한다. 유압유 튜브의 내부는, 높은 압력의 유압유를 전달하여야 하므로 유압유 튜브가 팽창되어 파손되거나 튜브가 인장되어 끊어지기도 쉽다.Hydraulic equipment is a power transmission device and has a wide range of applications in equipment such as an excavator, a loader, a road roller, and the like. The hydraulic oil tube for transporting the hydraulic oil is disposed along the mechanical arm, and when the mechanical arm is expanded and contracted, the hydraulic oil tube of the bent portion is likely to be exposed to the outside. In some harsh working environments, A pressure or an internal tension is applied to deform it, and even scratches or breakage occur. Since the inside of the hydraulic oil tube has to transmit a high pressure hydraulic oil, the hydraulic oil tube is inflated and broken, or the tube is easily pulled and broken.

나일론과 고무는 유압유 튜브에서 흔히 볼 수 있는 제조 재료인 바, 나일론은 탄성이 없고 구조 강도가 세기에 유압유를 전달하는 과정에서 전달 속도가 빠르고 압력 소모가 작아 압력 전달 효율이 99.5%에 도달할 수 있으므로, 초기의 유압유 튜브는 모두 나일론 재질을 사용하였다. 그러나 나일론은 탄성이 없는 바, 굽혀졌을 때 접혀 막히기 쉬워 유압유가 유동할 수 없게 되고 압력이 전달되지 못하므로, 근년래 나일론 재질의 유압유 튜브는 점차 도태되고 있는 추세이다. 고무는 내노화성을 구비하고 탄성이 우수하여 비교적 큰 변형이 발생하여도 파손되지 않는다. 그러나 고무는 탄성이 큰 바, 유압유 전달 과정에서 축방향으로의 신축 및 반경 방향으로의 팽창 수축 등 탄성의 변형이 발생될 수 있으므로, 통상적인 고무 유압유 튜브는 압력 전달 소모가 크고 전달 속도가 느리다. Nylon and rubber are materials that are commonly found in hydraulic oil tubes. Nylon has no elasticity. In the process of delivering hydraulic oil to structural strength, the delivery speed is fast and the pressure consumption is low, so that the pressure transmission efficiency can reach 99.5% Therefore, all of the initial hydraulic fluid tubes were made of nylon material. However, since nylon is not elastic, it is easily folded and bent when bent, so hydraulic fluid can not flow and pressure can not be transmitted. Thus, in recent years, nylon hydraulic fluid tubes have been gradually being culled. The rubber is resistant to aging and has excellent elasticity, so that even if a relatively large deformation occurs, the rubber is not damaged. However, since the elasticity of the rubber is large, elastic deformation such as elongation and contraction in the axial direction and expansion and contraction in the axial direction may occur in the process of transmitting the hydraulic oil, so that the rubber hydraulic oil tube of the conventional rubber has high pressure transmission consumption and slow delivery speed.

따라서, 상기 과제를 해결하기 위해, 종합적인 역학 성능이 우수하고 압력 저항 능력이 강하며 사용 수명이 긴 유압유 튜브가 절실히 수요된다.Therefore, in order to solve the above problems, there is a desperate need for a hydraulic oil tube having excellent dynamic performance, strong pressure resistance, and long service life.

본 고안에 사용된 과제 해결 수단은, 내부에서 외부로 순차적으로 구비된 나일론 튜브층, 폴리우레탄(Polyurethane)층, 고무층I, 보강층, 고무층II을 포함하고, 상기 폴리우레탄층은 상기 고무층I과 상기 나일론 튜브층을 일체로 접착시키는 유압유 튜브이다. 폴리우레탄는 고무의 고탄성, 고강도, 고회복력을 구비하고, 사출 가공 가능한 특징도 구비한 재료로서, 친환경적이고 안전하며 경도 범위가 넓고 우수한 착색성을 가지며, 촉감이 부드럽고 내후성, 내피로성 및 내온성을 구비하고 가공 성능이 우월하다. 폴리우레탄층은 나일론 튜브층과 고무층I을 접착시켜 유압유 튜브의 내벽이 나일론 튜브층이 되도록 할 수 있어, 압력이 빠르게 전달되고 소모가 적다. 폴리우레탄층은 중간층인 바, 비교적 좋은 탄성을 가지고 있어 나일론 튜브가 접혀 막히는 것을 초보적으로 방지하는 작용을 하고, 이밖에 폴리우레탄층의 비교적 양호한 탄성은 내부층 및 외부층의 상이한 변형 정도를 완화시킬 수 있어, 나일론 튜브층이 고무층에서 박리되는 것을 방지함으로써, 나일론 튜브층과 고무층이 접착되기 어려워 쉽게 박리되어 전체 강도가 낮아지는 기술적 과제를 해결하였으며 유압 튜브의 강도를 향상시키고, 아울러, 유압유 튜브의 외벽은 고무층이 되도록 할 수 있는 바, 탄성이 크기에 전체 유압유 튜브가 접혀 막히는 것을 방지하므로, 유압유 튜브가 나일론 튜브와 고무 튜브의 장점을 겸비하도록 하여 종합적인 성능이 우수하다.A polyurethane layer, a rubber layer I, a reinforcing layer, and a rubber layer II, wherein the polyurethane layer is provided between the rubber layer I and the rubber layer I, A hydraulic oil tube that integrally adheres a nylon tube layer. The polyurethane is a material having high elasticity, high strength and high recovery ability of rubber and also having an injection-processable characteristic. It is environment-friendly, safe, has a wide range of hardness, excellent coloring property, soft touch, weather resistance, fatigue resistance, Processing performance is superior. The polyurethane layer can bond the nylon tube layer and the rubber layer I to make the inner wall of the hydraulic oil tube become a nylon tube layer, and the pressure is transmitted quickly and consumes little. Since the polyurethane layer is an intermediate layer, it has a relatively good elasticity, and acts to prevent the nylon tube from being clogged, and the relatively good elasticity of the polyurethane layer also alleviates the degree of deformation of the inner layer and the outer layer Thereby preventing the nylon tube layer from being peeled off from the rubber layer. Thus, the nylon tube layer and the rubber layer are hardly adhered to each other and are easily peeled off to lower the overall strength. Further, the strength of the hydraulic tube is improved, Since the outer wall can be formed into a rubber layer, the hydraulic fluid tube can be advantageously combined with the nylon tube and the rubber tube by preventing the entire hydraulic oil tube from being clogged due to its elasticity.

바람직한 수단으로서, 상기 보강층은 강선층이고, 상기 고무층I과 고무층II은 황화 과정에서 상기 강선층을 통해 일체로 융합되어 상기 유압유 튜브 전체가 일체로 융합되도록 하여, 유압유 튜브의 강도를 더 향상시킨다. As a preferred means, the reinforcing layer is a steel wire layer, and the rubber layer I and the rubber layer II are integrally fused through the steel wire layer during the sulfidation process so that the entire hydraulic oil tubes are integrally fused to further improve the strength of the hydraulic oil tube.

위에서 설명한 본 고안이 해결하고자 하는 기술적 과제, 과제 해결 수단을 구성하는 기술특징 및 이러한 과제 해결 수단의 기술 특징이 가져다 주는 장점 외에, 아래에서는 도면을 결부하여 본 고안이 해결할 수 있는 기타 기술적 과제, 과제 해결 수단에 포함된 기타 기술 특징 및 이러한 기술 특징이 가져다 주는 장점을 더 상세히 설명하기로 한다.In addition to the technical problems to be solved by the present invention described above, the technical features constituting the solution to the problem, and the technical features of the problem solution, other technical problems and problems Other technical features included in the solution and the advantages of these technical features will be described in more detail.

본 고안의 장점과 유리한 효과는 하기와 같다. 본 고안은 상기와 같은 과제 해결 수단을 사용하는 바, 폴리우레탄층은 나일론 튜브층과 고무층I을 접착시켜 유압유 튜브의 내벽은 나일론 튜브층이 되도록 할 수 있어, 압력이 빠르게 전달되고 소모가 적다. 폴리우레탄층은 중간층인 바, 비교적 좋은 탄성을 가지고 있어 나일론 튜브가 접혀 막히는 것을 초보적으로 방지하는 작용을 하고, 이밖에 폴리우레탄층의 비교적 양호한 탄성은 내부층 및 외부층의 상이한 변형 정도를 완화시킬 수 있어, 나일론 튜브층이 고무층에서 박리되는 것을 방지하며, 유압유 튜브의 강도를 증가시키고, 아울러, 유압유 튜브의 외벽은 고무층이 되도록 할 수 있는 바, 탄성이 크기에 전체 유압유 튜브가 접혀 막히는 것을 방지하므로, 유압유 튜브가 나일론 튜브와 고무 튜브의 장점을 겸비하도록 하여 종합적인 성능이 우수하다Advantages and advantageous effects of the present invention are as follows. In the present invention, the polyurethane layer adheres the nylon tube layer and the rubber layer I so that the inner wall of the hydraulic oil tube can be a nylon tube layer, and the pressure is quickly transmitted and consumed little. Since the polyurethane layer is an intermediate layer, it has a relatively good elasticity, and acts to prevent the nylon tube from being clogged, and the relatively good elasticity of the polyurethane layer also alleviates the degree of deformation of the inner layer and the outer layer It is possible to prevent the nylon tube layer from being peeled off from the rubber layer and to increase the strength of the hydraulic oil tube and to make the outer wall of the hydraulic oil tube to be a rubber layer so as to prevent the entire hydraulic oil tube from being clogged Because hydraulic oil tube combines the advantages of nylon tube and rubber tube, it has excellent overall performance

도1은 본 고안에 따른 유압유 튜브의 구조 모식도이다.1 is a structural schematic diagram of a hydraulic oil tube according to the present invention.

본 고안의 내용, 특점 및 효과를 더욱 잘 이해할 수 있도록, 하기의 실시예를 예로 들어 설명하며, 도면을 결부하여 상세히 설명하기로 한다.In order that the contents, features, and effects of the present invention can be better understood, the following embodiments will be described by way of example, and will be described in detail with reference to the drawings.

도1에 도시된 바와 같이, 본 실시예는 내부에서 외부로 순차적으로 구비된 나일론 튜브층(1), 폴리우레탄층(2), 고무층I(3), 보강층(4), 고무층II(5)을 포함하고, 상기 폴리우레탄층(2)은 상기 고무층I(3)과 상기 나일론 튜브층(1)을 일체로 접착시키는 유압유 튜브이다. 상기 보강층(4)은 강선층이고, 상기 고무층I(3)과 고무층II(5)은 황화 과정에서 상기 강선층의 편직 또는 갭(gap)을 감싸는 것을 통해 일체로 융합되어 상기 유압유 튜브 전체가 일체로 융합되도록 한다. 1, the present embodiment includes a nylon tube layer 1, a polyurethane layer 2, a rubber layer I 3, a reinforcing layer 4, a rubber layer II 5, , And the polyurethane layer (2) is a hydraulic oil tube that integrally bonds the rubber layer (I) (3) and the nylon tube layer (1). The reinforcing layer 4 is a steel wire layer and the rubber layer I 3 and the rubber layer II 5 are integrally fused by covering a knit or a gap of the steel wire layer during the sulfidation process, .

본 고안에서, 유압유 튜브의 내벽은 나일론 튜브층으로서, 압력 전달이 빠르고 소모가 적으며, 폴리우레탄층은 중간층으로서, 비교적 양호한 탄성을 구비하여, 나일론 튜브가 접혀 막히는 것을 초보적으로 방지하는 작용을 하고, 이밖에 폴리우레탄층의 우수한 탄성은 내부층 및 외부층의 상이한 변형 정도를 완화시킬 수 있어, 나일론 튜브층이 고무층에서 박리되는 것을 방지하여, 나일론 튜브층과 고무층이 접착되기 어렵고 쉽게 박리되어 전체 강도가 낮아지는 기술적 과제를 해결하였으며, 유압유 튜브의 강도를 향상시켰다. 유압유 튜브의 외벽은 고무층으로서, 탄성이 크키에 전체 유압유 튜브가 접혀 막히는 것을 방지하므로, 유압유 튜브가 나일론 튜브와 고무 튜브의 장점을 겸비하도록 한다. 폴리우레탄층은 내부 고무층 및 인접되는 고무층을 일체로 접착시키고, 두개의 고무층은 황화 과정에서 상기 강선층을 통해 일체로 융합되어 상기 유압유 튜브 전체가 일체로 융합되도록 함으로써, 유압유 튜브의 강도를 더 증가시키고, 유압유 튜브의 종합적인 성능을 향상시킨다.In the present invention, the inner wall of the hydraulic oil tube is a nylon tube layer, the pressure transmission is quick and the consumption is low, and the polyurethane layer is an intermediate layer and has a relatively good elasticity so as to prevent the nylon tube from being clogged In addition, the excellent elasticity of the polyurethane layer can alleviate the degree of deformation of the inner layer and the outer layer, so that the nylon tube layer is prevented from being peeled off from the rubber layer and the nylon tube layer and the rubber layer are hardly adhered to each other, It solved the technical problem of lower strength and improved the strength of hydraulic oil tube. The outer wall of the hydraulic oil tube is a rubber layer, which prevents the entire hydraulic oil tube from being clogged due to elasticity, so that the hydraulic oil tube combines the advantages of a nylon tube and a rubber tube. The polyurethane layer is integrally bonded to the inner rubber layer and the adjacent rubber layer and the two rubber layers are fused integrally through the steel wire layer in the sulphurization process so that the entire hydraulic fluid tubes are integrally fused to increase the strength of the hydraulic oil tube And improves the overall performance of hydraulic oil tubes.

본 고안이 속하는 기술분야의 통상의 지식을 가진 자는 본 고안의 기초상에서 보강층과 고무층을 교대로 증가시킬 수 있고, 고무층과 보강층을 계속하여 증가하는 것도 본 고안의 보호범위에 포함됨을 이해해야 한다.Those skilled in the art will appreciate that alternatives to the reinforcement layer and the rubber layer can be increased on the basis of the present invention, and that the continuous increase of the rubber layer and the reinforcement layer is also included in the scope of protection of the present invention.

상기와 같이 본 고안의 실시예에 대하여 상세한 설명을 진행하였지만 상기 내용은 본 고안의 바람직한 실시예일 뿐이지 본 고안의 실시범위를 한정한다고 판단해서는 안된다. 본 고안의 청구범위에 따라 진행한 균등한 변화와 개선 등은 모두 본 고안의 보호범위에 속해야 할 것이다.As described above, the embodiments of the present invention have been described in detail, but the above description is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. All changes and improvements made in accordance with the scope of this invention should fall within the scope of protection of this invention.

1: 나일론 튜브층 2: 폴리우레탄층
3: 고무층I 4: 보강층
5: 고무층II1: nylon tube layer 2: polyurethane layer
3: rubber layer I 4: reinforcing layer
5: Rubber layer II

Claims (2)

내부에서 외부로 순차적으로 구비된 나일론 튜브층, 폴리우레탄층, 고무층I, 보강층, 고무층II을 포함하고,
상기 폴리우레탄층은 상기 고무층I과 상기 나일론 튜브층을 일체로 접착시키는 것을 특징으로 하는 유압유 튜브.A nylon tube layer, a polyurethane layer, a rubber layer I, a reinforcing layer, and a rubber layer II sequentially arranged from the inside to the outside,
Wherein the polyurethane layer integrally adheres the rubber layer (I) and the nylon tube layer. 제1항에 있어서,
상기 보강층은 강선층이고,
상기 고무층I과 고무층II은 황화 과정에서 상기 강선층을 통해 일체로 융합되어 상기 유압유 튜브 전체가 일체로 융합되도록 하는 것을 특징으로 하는 유압유 튜브.The method according to claim 1,
Wherein the reinforcing layer is a steel wire layer,
Wherein the rubber layer (I) and the rubber layer (II) are integrally fused through the steel wire layer during the sulfidation process so that the entire hydraulic fluid tubes are fused integrally.
KR2020160005531U 2016-04-16 2016-09-23 Hydraulic fluid tube KR20170003694U (en)

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