KR101511368B1 - PVC hose with increased internal pressure, external pressure and bursting strength and manugacturing method thereof - Google Patents

PVC hose with increased internal pressure, external pressure and bursting strength and manugacturing method thereof Download PDF

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KR101511368B1
KR101511368B1 KR20130004788A KR20130004788A KR101511368B1 KR 101511368 B1 KR101511368 B1 KR 101511368B1 KR 20130004788 A KR20130004788 A KR 20130004788A KR 20130004788 A KR20130004788 A KR 20130004788A KR 101511368 B1 KR101511368 B1 KR 101511368B1
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pvc hose
thickness
outer periphery
buried
wire
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KR20130004788A
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Korean (ko)
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KR20140093367A (en
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박기열
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주식회사 한길
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    • 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
    • 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
    • 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
    • F16L11/085—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising one or more braided layers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

본 발명은 제 1 압출성형기의 압출다이 선단에 여러 개의 수직통공을 외부주연에서 내부주연으로 일정한 간격이 되게 수직으로 천공시킨 편사링을 부설시켜서 여러 개의 보강횡사가 편사링의 여러 개 수직통공을 통해 외부주연에서 내부주연으로 유통하여 압출다이에서 압출성형하는 기본 PVC 호스가 편사링을 통과하면서 두께 내부로 여러 개의 보강횡사가 매몰이 되어 기본 PVC 호스의 두께 내부로 여러 개의 보강횡사가 길이방향으로 매몰이 되게 성형시키고 이렇게 여러 개의 보강횡사를 외부주연에서 두께 내부로 매몰시킨 기본 PVC 호스의 외부주연에 와이어를 나선형으로 감은 후 제 2 압출성형기로서 나선형 와이어가 매몰이 되게 2겹층으로 압출성형시켜서 보강횡사는 기본 PVC 호스는 두께 내부에, 나선형 와이어는 기본 PVC 호스의 외부주연에서 2겹층의 두께 내부로 매몰이 되게 압출성형시켜서 내, 외압 및 파열강도를 2배로 향상시킨 내, 외압 및 파열강도를 배가시킨 PVC 호스와 그 제조방법The present invention is characterized in that a plurality of vertical holes are vertically perforated at regular intervals from the outer periphery to the inner periphery by laying a plurality of reinforcement transverse yarns on the tip of the extrusion die of the first extrusion molding machine The basic PVC hose extruded from the outer periphery to the inner periphery and extruded from the extrusion die passes through the knitting ring, and several reinforcements are buried in the thickness, so that the reinforcement crosshairs are buried in the longitudinal direction inside the thickness of the basic PVC hose The wire is spirally wound around the outer periphery of the base PVC hose in which a plurality of reinforcing transverse yarns are buried in the thickness at the outer periphery, and the second extrusion molding machine is formed by extruding the helical wire into a two- The base PVC hose is thick inside, the spiral wire is from the outer circumference of the base PVC hose PVC hose which has twice or more internal, external pressure and burst strength which is extruded to the inside of the thickness of 2 layers, double the internal pressure, external pressure and breaking strength, and its manufacturing method

Description

내, 외압 및 파열강도를 배가시킨 PVC 호스와 그 제조방법{PVC hose with increased internal pressure, external pressure and bursting strength and manugacturing method thereof}BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a PVC hose having increased internal, external pressure, and burst strength and a manufacturing method thereof,

본 발명은 PVC 호스에서 보강횡사는 기본 PVC 호스의 두께 내부에 매몰이 되게, 나선형 와이어는 기본 PVC 호스의 외부주연에서 2겹층의 두께 내부로 매몰이 되게 압출성형시켜서 내, 외압 및 파열강도를 배가시킨 PVC 호스와 그 제조방법에 관한 것이다.In the present invention, the reinforcing transverse yarn in the PVC hose is embedded in the thickness of the basic PVC hose, and the helical wire is extruded in the thickness of the double layer from the outer periphery of the basic PVC hose to extrude the inner, outer pressure and rupture strength And a method of manufacturing the same.

통상 PVC 호스에서 내, 외압강도와 파열강도를 향상시키기 위하여 제 1 압출성형기에서 압출되는 기본 PVC 호스의 외부주연에 호스의 길이방향으로 인장강도용 보강횡사를 여러 개 일정한 사이간격으로 밀접되게 배열시킨 후 그 외부에 서로 반대방향으로 회전하는 두 개의 회전편사기에 의해 교호되게 직조하는 내압강도용 제 1 보강종사를 에워싼 후 제 2 압출성형기로서 보강횡사와 제 1 보강종사가 2겹으로 피복된 기본 PVC 호스 외부에 2겹층이 되게 압출성형시키고 파열강도를 더욱 높이기 위하여 다시 2겹층의 PVC 호스 외부주연에 서로 반대방향으로 회전하는 두 개의 회전편사기에 의해 교호되게 직조하는 내압강도용 제 2 보강종사를 에워싼 후 제 3 압출성형기로서 제 2 보강종사가 에워싼 2겹층의 PVC 호스 외부에 3겹층이 되게 압출성형시켜서 PVC호스의 두께를 3겹층으로 하여 기본 PVC 호스와 2겹층 사이에 보강횡사와 제 1 보강종사를, 2겹층과 3겹층 사이에는 제 2 보강종사를 끼워 넣어서 PVC 호스의 파열강도를 보강시켰으나 기본 PVC호스의 외부주연에 보강횡사와 제 1 보강종사가 2겹으로 포개어져 PVC 호스의 외부주연이 보강횡사와 제 1 보강종사에 의해 외부로 노출되는 PVC 재질면적이 적어져서 제 2 압출성형기로서 PVC 재질을 2층겹으로 압출성형시 기본 PVC 호스의 외부주연과 2겹층의 내부주연과의 상호 융착하는 부분이 2겹으로 포개진 보강횡사와 제 1 보강종사에 의해 적어지면서 내부압력이나 인장압력에 약화가 되는 결점이 있었다.In order to improve internal and external pressure strength and rupture strength of PVC hose, a plurality of reinforcing transverse yarns for tensile strength are arranged closely adjacent to the outer circumference of a basic PVC hose extruded in a first extruder A second reinforcement work for pressure-resistant strength which is woven to be interwoven by two rotary scissors rotating in mutually opposite directions to the outside, and then a second extrusion molding machine is used in which the reinforcement transverse warp and the first reinforcement work are coated in two layers Secondary reinforcement for pressure-proof strength, which is woven by two rotary scissors rotating in opposite directions on the outer periphery of the PVC hose of the 2-ply layer, in order to extrude the outer layer of the PVC hose into two layers and further increase the burst strength After enclosing the work, the third extrusion molding machine is extruded to form a three-layered layer outside the PVC hose of the two-ply layer surrounding the second reinforcement work, The thickness of the PVC hose was reinforced by the reinforcement work between the basic PVC hose and the 2 ply layer and the 2nd reinforcement work between the 2 ply and 3 ply layers. The outer edge of the PVC hose is overlapped with the reinforcement transverse and the first reinforcement at the outer periphery, so that the outer periphery of the PVC hose is exposed to the outside by the reinforcement transverse warp and the first reinforcement work. As a second extrusion molding machine, In case of extrusion molding of layered ply, the part where mutual fusion between the outer periphery of the basic PVC hose and the inner periphery of the two-ply layer is reduced by reinforcement transverse warp embedding in two layers and the first reinforcement work, .

또한 PVC 호스 두께 내부에 와이어를 나선형으로 배열되게 압출성형시킨 것도 있었으나 내압 또는 외압의 충격이 클 경우 굵기가 굵고 강도가 강한 나선형 와이어가 PVC 재질인 호스의 두께 내부에서 외향으로 이탈하려는 경향이 발생하였다.There was also a case where wire was spirally arranged in the thickness of the PVC hose, but when the impact of the internal pressure or the external pressure was large, the spiral wire having a large thickness and strong strength tended to depart from the inside of the thickness of the PVC hose outward .

파열강도를 보강시킨 PVC 호스를 구성함에 있어서 PVC 호스의 두께 내부로 보강횡사와 제 1 보강종사 그리고 제 2 보강종사를 각각 끼워넣기 위하여 제 1 압출성형기에서 압출성형되는 기본 PVC 호스의 외부주연에 제 2 압출성형기로서 2겹층을, 그리고 제 3 압출성형기로서 3겹층을 성형하는 제조방법에서 기본 PVC 호스의 외부주연에 2겹으로 포개어지는 보강횡사와 제 1 보강종사가 상호 겹치지 않게 보강횡사를 제 1 압출성형기에서 압출성형하는 기본 PVC 호스의 두께 내부로 매몰이 되게 압출성형하는 방안이 필요하였다.In constructing the PVC hose reinforced with rupture strength, in order to insert reinforcement transverse warp, first reinforcement work, and second reinforcement work into the thickness of the PVC hose, the outer edge of the basic PVC hose extruded in the first extruder 2 In the production method of forming a two-ply layer as an extrusion molding machine and a three-ply layer as a third extrusion molding machine, the reinforcement transverse yarn superimposed in two layers on the outer circumference of the basic PVC hose and the reinforcement transverse yarn A method of extrusion molding to be buried in the thickness of the basic PVC hose extruded in an extrusion molding machine was required.

본 발명에서는 제 1 압출성형기의 압출다이 선단에 여러 개의 수직통공을 외부주연에서 내부주연으로 일정한 간격이 되게 수직으로 천공시킨 편사링을 부설시켜서 여러 개의 보강횡사가 편사링의 여러 개 수직통공을 통해 외부주연에서 내부주연으로 유통하여 압출다이에서 압출성형하는 기본 PVC 호스가 편사링을 통과하면서 두께 내부로 여러 개의 보강횡사가 매몰이 되어 기본 PVC 호스의 두께 내부로 여러 개의 보강횡사가 길이방향으로 매몰이 되게 성형시키고 이렇게 여러 개의 보강횡사를 외부주연에서 두께 내부로 매몰시킨 기본 PVC 호스의 외부주연에 와이어를 나선형으로 감은 후 제 2 압출성형기로서 나선형 와이어가 매몰이 되게 2겹층으로 압출성형시켜서 보강횡사는 기본 PVC 호스는 두께 내부에, 나선형 와이어는 기본 PVC 호스의 외부주연에서 2겹층의 두께 내부로 매몰이 되게 압출성형시켜서 내, 외압 및 파열강도를 2배로 향상하였다.In the present invention, a plurality of vertical holes are vertically perforated from the outer periphery to the inner periphery at regular intervals so that a plurality of reinforced hosiery can be inserted through a plurality of vertical holes of the kneading ring The basic PVC hose extruded from the outer periphery to the inner periphery and extruded from the extrusion die passes through the knitting ring, and several reinforcements are buried in the thickness, so that the reinforcement crosshairs are buried in the longitudinal direction inside the thickness of the basic PVC hose The wire is spirally wound around the outer periphery of the base PVC hose in which a plurality of reinforcing transverse yarns are buried in the thickness at the outer periphery, and the second extrusion molding machine is formed by extruding the helical wire into a two- The base PVC hose is thick inside, the spiral wire is the outer circumference of the base PVC hose Stand 2 to be buried in the interior thickness of the gyeopcheung by extrusion molding in, and improve the external pressure, and burst strength to double.

본 발명은 기본 PVC 호스를 압출성형하는 제 1 압출성형기의 압출다이 선단에 여러 개의 수직통공을 외부주연에서 내부주연으로 일정한 간격이 되게 천공시킨 편사링을 부설시켜서 여러 개의 보강횡사가 편사링의 여러 개 수직통공을 통해 압출다이에서 압출성형하는 기본 PVC 호스의 두께 내부로 여러 개의 보강횡사가 매몰이 되게 압출성형시키고 기본 PVC 호스의 외부주연에 와이어를 나선형으로 감은 후 제 2 압출성형기로서 기본 PVC 호스 외부를 나선형 와이어가 매몰이 되게 2겹층으로 압출성형시켜서 제 1 압출성형기와 제 2 압출성형기의 압출공정으로 PVC 호스의 내, 외압 및 파열강도를 2배로 향상시킬 수가 있는 것이다.The present invention relates to a first extrusion molding machine for extruding a basic PVC hose, in which a plurality of vertical holes are perforated at regular intervals from an outer periphery to an inner periphery at a tip of an extrusion die, Extruded through the vertical through holes to extrude the base PVC hose extruded in the extrusion die so that several reinforcements are buried therein, the wire is spirally wound around the outer circumference of the basic PVC hose, and the second extrusion molding machine is used as a basic PVC hose The inner, outer pressure and burst strength of the PVC hose can be doubled by the extrusion process of the first extrusion molding machine and the second extrusion molding machine by extruding the outer portion of the spiral wire into a two-ply layer so as to be buried.

도 1은 본 발명에서 압출성형기의 선단에 편사링을 부설시킨 구성을 보인 단면도
도 2는 본 발명의 압출성형장치로 제조된 PVC 호스의 일부절결 사시도
도 3은 도 2에서 A~A선 단면도
도 4는 본 발명에서 강도를 더욱 보강하여 제조된 PVC 호스의 일부절결 사시도
도 5는 도 4에서 B~B선 단면도1 is a sectional view showing a configuration in which a knitting yarn is attached to the tip of an extrusion molding machine according to the present invention
Fig. 2 is a partially cutaway perspective view of a PVC hose manufactured by the extrusion molding apparatus of the present invention
Fig. 3 is a sectional view taken along the line A-A in Fig.
Fig. 4 is a partially cutaway perspective view of a PVC hose manufactured by further reinforcing the strength in the present invention
5 is a cross-sectional view taken along lines B to B in Fig. 4

제 1 압출성형기(10)의 압출다이(11) 선단에 여러 개의 수직통공(21)을 외부주연에서 내부주연으로 일정한 간격이 되게 수직으로 천공시킨 편사링(20)을 부설시켜서 여러 개의 보강횡사(4)가 편사링(20)의 여러 개 수직통공(21)을 통해 외부주연에서 내부주연으로 유통하여 압출다이(11)에서 압출성형하는 기본 PVC 호스(1)가 편사링(20)을 통과하면서 두께 내부로 여러 개의 보강횡사(4)가 길이방향으로 매몰이 되게 성형시키고A plurality of vertical through holes 21 are formed at the tip of the extrusion die 11 of the first extrusion molding machine 10 by laying a knitting yarn 20 vertically peripherally spaced from the outer circumference at a predetermined interval, 4 are flown from the outer periphery to the inner periphery through the plurality of vertical through holes 21 of the knitting yarn 20 and the basic PVC hose 1 extruded in the extrusion die 11 passes through the knitting yarn 20 Several reinforcing transverse yarns 4 are formed in the thickness so as to be buried in the longitudinal direction

상기와 같이 여러 개의 보강횡사(4)를 두께 내부로 매몰되게 배열시킨 기본 PVC 호스(1)의 외부주연에 와이어(5)를 나선형으로 일정하게 감은 후 제 2 압출성형기로서 와이어(5)가 나선형으로 감긴 기본 PVC 호스(1) 외부를 나선형 와이어(5)가 매몰이 되게 2겹층으로 압출성형시켜서 보강횡사(4)는 기본 PVC 호스(1)의 두께 내부에, 나선형 와이어(5)는 기본 PVC 호스(1)의 외부주연에서 2층겹(2)의 두께 내부에 각각 분리가 되게 배열시켜 PVC 호스의 두께 사이에 굵기가 가늘고 유연한 폴리에스터의 보강횡사는 두께 중심 쪽에, 굵기가 굵고 강도가 강한 나선형 와이어(5)는 두께 외향쪽에 각각 배열하므로서 PVC 호스의 내, 외압 및 파열강도를 2배로 향상시킬 수가 있는 것이다.After the wire 5 is spirally and uniformly wound around the outer periphery of the base PVC hose 1 in which several reinforcing transverse yarns 4 are arranged so as to be buried in the thickness as described above, the wire 5 as a second extrusion- The reinforcing transverse yarn 4 is formed inside the thickness of the basic PVC hose 1 while the helical wire 5 is extruded from the basic PVC hose 1 into the base PVC hose 1 by extrusion molding the spiral wire 5 outside the basic PVC hose 1, The polyester hosel 1 is arranged so as to be separated from the outer periphery of the two-ply layer 2 so that the thickness of the PVC hose is thin and flexible between the thicknesses thereof. The reinforced polyphosphorus of the hosel 1 has a thick, The wires 5 are arranged on the outward side of the thickness, so that the inside and outside pressure and the burst strength of the PVC hose can be doubled.

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그리고 내, 외압 및 파열강도를 더욱 높이기 위하여 여러 개의 보강횡사(4)를 두께 내부로 매몰되게 배열시킨 기본 PVC 호스 외부주연에 서로 반대방향으로 회전하는 두 개의 회전 편사기에 의해 교호되게 직조하는 보강종사(6)로 에워싼 후 제 2 압출성형기로서 보강종사(6)가 피복된 기본 PVC 호스(1)의 외부를 보강종사(6)가 매몰이 되게 2겹층(2)으로 압출성형시키고 2층겹(2)의 PVC 호스 외부주연에 와이어(5)로서 나선형으로 일정하게 감은 후 제 3 압출성형기로서 와이어(5)가 나선형으로 감긴 2겹층(2)의 PVC 호스 외부를 나선형 와이어(5)가 매몰이 되게 압출성형시켜서 보강횡사(4)는 기본 PVC 호스(1)의 두께 내부에, 보강종사(6)는 기본 PVC 호스(1)의 외부주연에서 2겹층(2)의 두께 내부에, 그리고 나선형 와이어(5)는 2겹층(2)의 외부주연에서 3겹층(3)의 두께 내부에 각각 분리가 되게 배열하므로서 PVC 호스의 내, 외압 및 파열강도를 2배 이상으로 향상할 수가 있는 것이다.In order to further increase internal, external pressure and burst strength, reinforcement is interweaving by two rotary scissors rotating in mutually opposite directions on the outer circumference of the base PVC hose, in which several reinforcing transverse yarns (4) The second extrusion molding machine is surrounded by a workpiece 6 and extruded from the base PVC hose 1 covered with the reinforcement work 6 into a two-ply layer 2 so that the reinforcing work 6 is buried, The wire 5 is spirally and uniformly wound around the outer circumference of the PVC hose 2 of the first layer 2 and then the spiral wire 5 is buried outside the PVC hose of the two layer layer 2 in which the wire 5 is spirally wound as a third extrusion molding machine The reinforcing transverse yarn 4 is formed inside the thickness of the basic PVC hose 1 and the reinforcing studs 6 are formed inside the thickness of the two-ply layer 2 at the outer periphery of the basic PVC hose 1, The wire (5) has a thickness in the thickness of the triple layer (3) at the outer periphery of the two-ply layer (2) My, external pressure and rupture strength of the PVC hoses to be arranged hameuroseo each separation will be improved by more than double that number.

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삭제delete

1: 기본 PVC 호스
2: 2겹층
3: 3겹층
4: 보강횡사
5: 나선형 와이어
6: 보강종사
10: 제 1 압출성형기
11: 압출다이
20: 편사링
21: 수직통공1: Basic PVC hose
2: 2 layer
3: 3 layer
4: Reinforcement transverse
5: Spiral wire
6: Reinforcement
10: First extrusion molding machine
11: extrusion die
20: knitting ring
21: Vertical opening

Claims (3)

보강횡사(4)를 기본 PVC 호스(1)의 두께 내부에 길이방향으로 매몰이 되게 배열시키고, 교호되게 직조하는 보강종사(6)를 기본 PVC 호스(1)의 외부주연에서 2겹층(2)의 두께 내부에 매몰이 되게 배열시키고, 나선형 와이어(5)는 2겹층(2)의 외부주연에서 3겹층(3)의 두께 내부로 매몰이 되게 배열시켜서 보강횡사(4)와 보강종사(6) 그리고 나선형 와이어(5)가 각각 분리가 되게 배열된 내, 외압 및 파열강도를 배가시킨 PVC 호스.
Reinforced transverse yarn 4 is embedded in the thickness of the basic PVC hose 1 in the longitudinal direction so that the reinforcement work 6 to be interwoven is woven into the two-ply layer 2 at the outer periphery of the basic PVC hose 1, And the helical wire 5 is arranged so as to be buried in the thickness of the three-ply layer 3 at the outer periphery of the two-ply layer 2 so as to be embedded in the reinforcing cross- And a PVC hose which doubles the internal, external pressure and burst strength, in which the helical wires (5) are arranged separately.
제 1 압출성형기(10)의 압출다이(11) 선단에 여러 개의 수직통공(21)을 외부주연에서 내부주연으로 일정한 간격이 되게 수직으로 천공시킨 편사링(20)을 부설시켜서 여러 개의 보강횡사(4)가 편사링(20)의 여러 개 수직통공(21)을 통해 외부주연에서 내부주연으로 유통하여 압출다이(11)에서 압출성형하는 기본 PVC 호스(1)가 편사링(20)을 통과하면서 두께 내부로 여러 개의 보강횡사(4)가 길이방향으로 매몰이 되게 성형시키고
상기와 같이 여러 개의 보강횡사(4)를 두께 내부로 매몰되게 배열시킨 기본 PVC 호스(1)의 외부주연에 와이어(5)를 나선형으로 일정하게 감은 후 제 2 압출성형기로서 와이어(5)가 나선형으로 감긴 기본 PVC 호스(1) 외부를 나선형 와이어(5)가 매몰이 되게 2겹층으로 압출성형시켜서 된 내, 외압 및 파열강도를 배가시킨 PVC 호스의 제조방법.A plurality of vertical through holes 21 are formed at the tip of the extrusion die 11 of the first extrusion molding machine 10 by laying a knitting yarn 20 vertically peripherally spaced from the outer circumference at a predetermined interval, 4 are flown from the outer periphery to the inner periphery through the plurality of vertical through holes 21 of the knitting yarn 20 and the basic PVC hose 1 extruded in the extrusion die 11 passes through the knitting yarn 20 Several reinforcing transverse yarns 4 are formed in the thickness so as to be buried in the longitudinal direction
After the wire 5 is spirally and uniformly wound around the outer periphery of the base PVC hose 1 in which several reinforcing transverse yarns 4 are arranged so as to be buried in the thickness as described above, the wire 5 is spirally wound (1) is extruded into a two-ply layer in which the spiral wire (5) is buried, thereby doubling the inner, outer pressure and rupture strength of the PVC hose. 삭제delete
KR20130004788A 2013-01-16 2013-01-16 PVC hose with increased internal pressure, external pressure and bursting strength and manugacturing method thereof KR101511368B1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05322073A (en) * 1992-05-18 1993-12-07 Sumitomo Rubber Ind Ltd Reinforced rubber hose
KR100877337B1 (en) * 2008-06-09 2009-01-07 김학건 High-in-tensity steal polyethylene 3 layer clad pipe and manufacturing method thereof
JP2009542982A (en) 2006-06-29 2009-12-03 ビーエイチピー ビルリトン ペトロレウム ピーティーワイ エルティーディー Axial reinforcement hose
JP2010539407A (en) 2007-09-14 2010-12-16 ビーエイチピー ビルリトン ペトロレウム ピーティーワイ エルティーディー hose

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05322073A (en) * 1992-05-18 1993-12-07 Sumitomo Rubber Ind Ltd Reinforced rubber hose
JP2009542982A (en) 2006-06-29 2009-12-03 ビーエイチピー ビルリトン ペトロレウム ピーティーワイ エルティーディー Axial reinforcement hose
JP2010539407A (en) 2007-09-14 2010-12-16 ビーエイチピー ビルリトン ペトロレウム ピーティーワイ エルティーディー hose
KR100877337B1 (en) * 2008-06-09 2009-01-07 김학건 High-in-tensity steal polyethylene 3 layer clad pipe and manufacturing method thereof

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