KR200356902Y1 - connect structure of plastics pipe - Google Patents

Abstract

The present invention is to meet the ends of the connection of the resin pipes (PE sewer pipe, PE storm pipe, PE sewer pipe, communication pipe, corrugated pipe, corrugated steel pipe, etc.) to bond the liner coated with butyl rubber, and also cross-linked PE yarn and cotton yarn, Woven with polyester or glass yarn, the circle heat shrink sheet to which the resin portion of crosslinked PE or electron irradiation PE is molded and extruded on both sides of the woven portion is bonded to the top of the liner by a band, and seams at both ends of the circle heat shrink band The surface layer is composed of cross-linked PE and the like, and even when strong heat is applied, the connection part is not separated or changed in shape when it is contracted, and a special adhesive sheet which does not melt and flows down is adhered, and then the adhesive sheet is adhered. The fastening member is fixed to both ends of the circle heat shrink band at equal intervals to the seam so that the circle heat shrink band After press-molding at the connection part of the resin tube by the heat heating means, the binding force of the seam is established by the binding member of the seam even though hot and cold distribution products or chemicals are distributed in the resin tube that are significantly different from the outside temperature. This binding member can be maintained without causing displacement, and the binding member increases the adhesive watertightness strength of the adhesive sheet of the seam, thereby increasing the tensile strength and the bursting strength of the circle heat shrink band, and leaking the connection portion of the resin pipe. The present invention relates to a seam-binding structure of a circle heat shrink band for connecting a resin pipe, which may have a semi-permanent life, and is fixed to a connection portion of the resin pipe (10, 10) by the adhesive line, and the liner (100). Heat-bonding and fixing the circle heat shrink band 200 obtained by extruding the resin portion 230 to the woven portion 220 made of a cross-linked PE yarn 201 and cotton yarn, polyester or glass yarn 202 on top of it. In this case, the binding member 800 is fixed to the seam 700 to which the adhesive sheet 300 is attached to the outer step joint of the circle heat shrink band 200, and the binding member 800 of the present invention is fixed. ) Is a rivet 810, the rivet 810 may be riveted at equal intervals across the seam 700, and the binding member 800 is a staple 820, the staple ( 820 may be stepped at equal intervals across the seam 700, and the aluminum sheet 600 is bonded to the step joint of the inner surface of the circle heat shrink band 200 to reinforce the airtight of the step joint This can prevent leakage.

Description

Connect structure of plastics pipe of seam heat shrink band for connecting resin pipes

The present invention relates to a seam-binding structure of a circle heat shrink band for connecting a resin pipe that can be tightly connected with a liner and a circle heat shrink band to a connection portion of the resin pipe, and more specifically, resin pipes (PE sewer pipe, PE excellent pipe, Butt-coated liner coated with butyl rubber is bonded to both ends of the connection part of PE sewer pipe, communication pipe, corrugated pipe, corrugated steel pipe, etc., and it is woven with crosslinked PE yarn, cotton yarn, polyester or glass yarn and crosslinked on both sides of the woven part. The heat-shrinkable sheet to which the resin part of the PE or electron irradiation PE is molded and extruded is adhered to the top of the liner by a band, and the surface layer is composed of crosslinked PE or the like at the seam at both ends of the heat-shrinkable band. , A special contact that does not separate or change its shape during contraction even if strong heat is applied and the adhesive does not melt and flow down After the sheet is bonded, the binding member is fixed to both ends of the circle heat shrink band at equal intervals to the seam to which the adhesive sheet is bonded, so that the circle heat shrink band is crimped to the connection portion of the resin pipe by heating and heating means. After it has been made, even though hot and cold distribution products or chemicals and the like, which have a large difference with the outside temperature, are distributed in the resin pipe, the binding force of the seam can be maintained by the binding member of the seam without being displaced. The member increases the adhesive watertightness strength of the adhesive sheet of the seam, thereby increasing the tensile strength and the bursting strength of the circle heat shrink band, thereby preventing the connection part of the resin pipe from leaking and having a semi-permanent life. A seam binding structure of a circle heat shrink band.

First, the present applicant has previously proposed a domestic utility model registration application No. 20-2004-0006350. In the above proposal, in the formation of a circle heat-shrink band for connecting both resin tubes, a cross-linked PE yarn and a cotton, polyester or glass yarn woven fabric of light and weft yarn is made of crosslinked PE or PE for electron irradiation. Extruded into a circle heat shrinkable sheet, and the circle heat shrinkable sheet is rolled into a cylinder, and both ends thereof are liners of a special material, and the surface layer is composed of crosslinked PE or the like. It is adhered to a special adhesive sheet that does not change or shape and does not melt down and melts down. It is also possible to bond the heat-shrinkable sheet without using a separate adhesive member. To 11 and by forming the heat-shrinkable band-circle, as indicated by the band to form by heating means such as a torch to bond the connecting part of the tube can be a heat-shrinkable band used as a circle.

As described above, since the circle heat shrink band is extruded from the cross-linked PE yarn and cotton yarn, polyester or glass yarn woven fabric of light and weft yarn to the resin molding made of crosslinked PE or PE for electron irradiation, heat is applied to the circle heat shrink band. When it is applied, the seam is adhered by the melt adhesion of the adhesive together with the shrinkage of the crosslinked yarn, but the temperature difference between the inside and the outside of the resin tube is large due to the distribution of cold and hot products or chemicals. In the case where the temperature change is large, there is a problem that leakage may occur due to the decrease in adhesive force due to repeated fatigue of the seam of the circle heat shrink band.

In addition, the connection structure of the resin pipe for connecting the resin pipes, such as known storm pipes, waste water pipes, agricultural water pipes and water supply pipes, as disclosed in the Korean Utility Model Registration No. 0245147, When the heat shrink tube is contracted while being heated, it is molded using a sheet, and then a protective member formed of asbestos and a resin plate is installed on the outside of the welded portion, so that the welded portion melts more than necessary when the heat shrink tube is installed. There is a heat shrink pipe for welding synthetic resin pipe.

In addition, in Utility Model Registration No. 203747, the heat shrink tube for fusion of synthetic resin pipe is coated with ascon or rubber mortar adhesive on the inside of the heat shrink tube, which is formed in a circular shape, and the reinforcement wire made of iron wire or abrasion stainless wire in the center of the heat shrink tube. There is a configuration to connect the synthetic resin pipe in a circular direction or a circular direction and a horizontal direction. However, since the heat shrink tube with the reinforcing wires of the steel wire and the stainless steel wire is formed in a circular shape, the molding process is very difficult, and there is a problem in that the productivity decreases and the cost increases due to a separate molding process.

In addition, by forming a heat-shrink tube into a sheet formed in a rectangular shape, the synthetic resin tube is wound around, and then a rounded protrusion is formed to insert a clip bar into the protrusions on both sides to hold the protrusions on both sides. However, the clip bar is used to maintain the state of holding the projections on both sides, so the connection part between the clip bar and the sheet becomes vulnerable and easily torn. In addition, since a separate clip bar is used in addition to the sheet, it may cause a delay in the insertion time of the clip bar, and it is difficult to fusion the portion where the clip bar is inserted, which causes water leakage. There is also a packing installed.

In addition, Utility Model Registration Application No. 20-2001-14046 discloses a heat-shrink tube in which both ends of the sheets are overlapped and fused to overlap the overlapping portions. However, when heat is applied to the welded part when heat is applied from the outside after inserting the heat extraction tube between the synthetic resin pipes, it is adhered by heat fusion of the heated part, but is separated by heat because it is bonded by fusion of resin. The synthetic resin tube could not be effectively connected by the occurrence of, and the internal protrusion was separated from the sheet, which could cause leakage from the protrusion.

In addition, both ends of the heat shrink tube overlap, and the overlapping portion is pressed by heat to fix the protection member formed of the asbestos portion and the resin plate to the outside of the molded fusion portion with an adhesive to directly heat the weld portion when heat is applied to the heat shrink tube. There is something to prevent this from being added. However, although heat is not directly applied by the asbestos on the resin plate, the adhesive part can be protected. However, a component that forms the asbestos part on the resin plate is added, and the cost is high due to the additional process of fixing with an adhesive or the like. There is a problem that asbestos is damaged inadvertently during storage.

The present invention is to solve the above problems, the circle heat shrink band for connecting the resin pipes of both crosslinked PE (LD, LLD, HD; where LD, LLD, HD is a general purpose of the density of PE LLD Is a soft material, HD is a hard material, LD is a medium material) Extruded a woven fabric of yarn, cotton, polyester or glass yarn with light and weft yarn to a resin molding composed of crosslinked PE or PE for electron irradiation. The circular heat shrinkable sheet is rolled into a cylinder, and both ends of the circular heat shrinkable sheet are made of a special material liner, and the surface layer is composed of crosslinked PE, etc. The present invention in the formation of the seam of the circle heat shrink band for connecting the resin pipe to be bonded by a special adhesive sheet that does not flow down, the both ends of the circle heat shrink band overlap By fixing the metal binding member at equal intervals to the seam to which the seating sheet is bonded, increase the adhesive strength of the bonded and bonded parts of both ends of the circle heat shrink band, and thus the change in the temperature of the circulating flow in the resin pipe. Resin pipe that prevents safety accidents by preventing leakage of resin pipe by increasing rupture strength of seam by preventing the binding member from binding to prevent deformation, which can weaken the adhesive strength due to adhesive fatigue in the seam of the circle heat shrink band. The purpose of this study is to provide a seam binding structure for the connection circle heat shrink band.

The present invention is in the heat-adhesive fixation of the circle heat shrink band obtained by the resin liner is adhesively fixed to the connection portion of the resin tube, the resin portion is extruded to the weaving portion made of cross-linked PE yarn and cotton yarn, polyester or glass yarn on the liner, The binding member is fastened to the seam to which the adhesive sheet is bonded to the outer step joint of the circle heat shrink band.

The binding member of the present invention is a rivet, the rivet can be riveted at equal intervals across the seam, and the binding member is a staple, the staple is stapled at equal intervals across the seam. In addition, the aluminum sheet is bonded to the step joint of the inner surface of the circle heat-shrink band can ensure the air tightness of the step joint.

1 is an exploded perspective view of the resin tube, liner and circle heat shrink band of the present invention,

Figure 2a, b is an exploded perspective view and a longitudinal cross-sectional view of the circle heat shrink band of the present invention,

Figure 3a is an exploded view of the circle heat shrink band of the present invention,

3B is a cross-sectional view taken along the line A-A of FIG. 3A;

3C is a cross-sectional view taken along line B-B,

4A is a plan view of an adhesive sheet bonded to a seam of a circle heat shrink band of the present invention;

4B is a cross-sectional view taken along the line C-C in FIG. 4A;

4C is a cross-sectional view taken along the line D-D of FIG. 4A;

5A is a longitudinal cross-sectional view of a liner bonded to a seam of a resin pipe of the present invention;

Figure 5b is a longitudinal sectional view of the circle heat shrink band is fixed on the liner of the seam of the resin tube of the present invention,

6A is a longitudinal sectional view of a state in which a binding hole is drilled in a seam of a circle heat shrink band of the present invention;

6B is an enlarged cross-sectional view of the seam of FIG. 6A;

Figure 7a is a longitudinal cross-sectional view of the binding member is fixed to the seam of the circle heat shrink band of the present invention,

7B is an enlarged cross-sectional view of the seam of FIG. 7A;

8 is a plan view of the state in which the circle heat shrink band bonded to the resin tube of the present invention,

9 is an enlarged cross-sectional view of another example of a binding member fixed to a seam of a circle heat shrink band of the present invention;

10 is a plan view of a state in which a binding member of another example is fixed to a seam of a circle heat shrink band of the present invention;

Figure 11 is a longitudinal cross-sectional view of the circle heat shrink band proposed by the present applicant.

Explanation of symbols on the main parts of the drawings

10,10: resin tube 100: liner

200: circle heat shrink band 201: crosslinked PE

202: cotton yarn, polyester or glass yarn 210: circle heat shrink sheet

220: weaving part 230: resin part

300: adhesive sheet 400: adhesive coating layer

500: release paper 600: aluminum sheet

610: adhesive coating layer 700: seam

710: binding hole 800: binding member

810 rivet 820 staples

830: metal sewing line

Referring to the configuration of the present invention in detail by the accompanying drawings as follows.

1 is an exploded perspective view of the resin tube, liner and the circle heat shrink band of the present invention, Figure 2a, b is an exploded perspective view and longitudinal cross-sectional view of the circle heat shrink band of the present invention, Figure 3a is an exploded view of the circle heat shrink band of the present invention 3B is a cross-sectional view taken along the line AA of FIG. 3A, FIG. 3C is a cross-sectional view taken along the line BB, and FIG. 4A is a plan view of an adhesive sheet bonded to the seam of the circle heat shrink band according to the present invention, and FIG. CC line sectional drawing, FIG. 4C is DD line sectional drawing of FIG. 4A, FIG. 5A is a longitudinal cross-sectional view of the liner adhered to the seam part of the resin pipe of this invention, FIG. 5B is a liner of the seam part of the resin pipe of this invention. Figure 6a is a longitudinal cross-sectional view of the state in which the circle heat shrink band is fixed, Figure 6a is a longitudinal cross-sectional view in the state that the binding hole in the seam of the circle heat shrink band of the present invention, Figure 6b is an enlarged cross-sectional view of the seam of Figure 6a, Figure 7a is the circle heat shrinkage FIG. 7B is an enlarged cross-sectional view of the seam of the seam of FIG. 7A, and FIG. 8 is a plan view of the circle heat shrink band bonded to the resin tube of the present invention, and FIG. 9. Is an enlarged cross-sectional view of another example of a fastening member fixed to the seam of the circle heat shrink band of the present invention, Figure 10 is a plan view of a state of the other fastening member fixed to the seam of the circle heat shrink band of the present invention, 11 is a longitudinal sectional view of the circle heat shrink band proposed by the present applicant.

As a means for connecting the connection portion of the resin pipe (10, 10) of the present invention is composed of a liner 100, a circle heat shrink band 200 and the binding member 800 as shown in FIG.

First, the circle thermal contraction band 200 will be described. The circle heat shrink band 200 is formed by weaving warp yarns composed of cross-linked 400% PE stretched yarn and weft yarns composed of cotton yarns or grease yarns, and then laminating and bonding both surfaces (epidermal layer and adhesive layer) between the crosslinked polyethylene layers. After 40% of the fabric itself is stretched, a special treatment is applied to the surface to ensure that the adhesive adheres to the fabric, and then the adhesive is applied.

That is, as shown in Figs. 3A, B, C and 4A, B, C, for example, cross-linked PE yarn 201 in the transverse direction, and cotton yarn, polyester or grass yarn 202 in the longitudinal direction, A weaving part 220 woven in a warp yarn and a warp yarn is formed, and both ends of the weaving part 220 are formed by extrusion of the resin part 230 of crosslinked PE or PE for electron irradiation. ) Is configured to form a circle heat shrink sheet 210 is molded.

The resin portion 230 of the crosslinked PE or PE for electron irradiation has a semi-permanent life withstanding industrial wastewater, sewage, seawater and various microorganisms without being affected by chemicals such as acids and alkalis.

In addition, the cross-linked PE yarn 201 of the weave portion 220 of the circle heat shrink sheet 210 is a shrink member that contracts when heat is applied, and the cotton yarn, polyester or glass yarn 202 has no shrinkage deformation. It is formed of a circle heat shrink band 200 to be described later as a material, the longitudinal direction of the cotton yarn, polyester or glass yarn 202 side by the heating means such as torch on the connection portion of the resin pipe (10, 10) without deformation The cross-linked PE yarn 201, which is a shrinkage member, shrinks and tightly compresses the circumferential portions of the resin tubes 10 and 10.

After the circular thermal contraction sheet 210 is rolled in a cylindrical shape as shown in FIG. 2A, the outer step joint portion is bonded to the adhesive sheet 300 to form a seam 700.

The adhesive sheet 300 is a liner of a special material, the surface layer is composed of a cross-linked PE, etc., is a special sheet that does not separate or change the shape when the shrinkage even if strong heat is applied and the adhesive does not flow down, As shown in Figure 4a, b, c is the adhesive sheet 300 is formed of a sheet of the same material as the circle heat shrink sheet 210, the circumference of the resin tube (10, 10) during thermal bonding of the circle heat shrink band 200 The material may be contracted in response to the deformation during contraction in the direction, and may be a material corresponding to the shrinkage deformation of the circle heat shrink band 200 even if the material is not the same material.

7A, B, 8, 9 and 10 as the main design of the present invention is bound to the seam 700 to which the adhesive sheet 300 is bonded to the outer stepped joint of the circle heat shrink band 200 The member 800 is fixedly fixed.

7A, 7B, and 8, the binding member 800 is a rivet 810, and the rivet 810 is riveted at equal intervals across the seam 700. The riveting may be riveted by a gun, and as shown in FIGS. 6A and 6B, a binding hole 710 is drilled in the seam 700 by a drilling device, and the binding hole 710 is formed by a tibeting device. By allowing the female and male rivets 810 to be molded and fixed, riveting can be performed to the seam 700 as shown in FIGS. 7A and 7B.

In addition, the binding member 800 is a staple 820, so that the staple 820 can be stapled at equal intervals across the seam 700 by a stapler as shown in FIG.

In addition, according to the present invention, as shown in FIG. 10, the high carbon-containing wire rod may be processed into a high strength iron wire in the seam part 700, and stitched by a special sewing apparatus to bind the metal sewing line 830.

The binding member 800 of the present invention is not limited to the above description, the binding member 800 should be made of a material having heat resistance, such as a metal material, which is a circle heat shrink band 200 in the resin tube to be described later When it is heated by heating means such as torch, it must be able to withstand the heat of heating.

By increasing the adhesive strength of the seam portion 700 of the circle heat shrink band 200 as described above, the adhesive force may be weakened by the adhesive fatigue occurs in the seam portion 700 by the change of the temperature of the circulation flow in the resin tube. The binding member prevents the deformation by the binding force to increase the burst strength of the seam 700 to prevent leakage of the resin pipe to prevent safety accidents.

Next, a double-sided adhesive coated aluminum sheet 600 is attached to the stepped joint of the inner surface of the circle heat shrink band 200 as shown in FIGS. 7A and 7B to prevent leakage by reinforcing airtightness at the stepped joint. have. In this case, instead of the coating layer 610 of the aluminum sheet 600, a hot melt may be coated and bonded.

In addition, an adhesive coating layer 400 is formed on the inner surface of the circle heat shrink sheet 210 to be melt bonded by heat, and when the circle heat shrink sheet 210 is formed into a circle heat shrink band 200 to be transported and stored, After attaching the release paper 500 to the adhesive coating layer 400, the release paper 500 may be peeled off during use, and then used. In this case, instead of the adhesive coating layer 400, a hot melt may be coated and bonded. The hot melt is melted and bonded when heat is applied, and can cover the release paper for protection of the hot melt.

In addition, the circle heat shrink sheet 210 is used to cut the length and width according to the diameter of the resin pipes (10, 10) to be bonded, rolled in a cylindrical shape as shown in Figure 2a, the adhesive sheet at both ends By adhesively fixing the 300, the band-shaped circle thermal contraction band 200 is constituted.

The adhesive coating layer 400 inside the circle heat shrink band 200 allows the adhesive coating layer 400 to be press-fixed and fixed to the circle heat shrink sheet 210 by a forming process of the rolls, and then the adhesive coating layer 400 What is necessary is just to make it shape | mold automatically through a series of shaping | molding processes so that the release paper 500 may be adhere | attached on it.

Next, the material of the patch liner 100 for attaching the fabric and the fabric is cross-linked by direct contact with fire (heat), and the adhesive on the back side to which the connection part is bonded melts away from strong heat, or the connection part Is a high heat-resistant adhesive that does not separate, and the fabric is joined by inserting a fabric that does not change shape or shrink when heated.

In addition, the liner 100 is coated with a butyl rubber inside, the release paper is adhered on the adhesive, but in use, the release paper is peeled off, and as shown in FIG. 5A, the connection portion of the resin pipes 10 and 10 is bonded to the resin pipe. There is no movement of the (10,10) and also keep the resin tube (10,10) of the connecting portion airtight.

Connection of the connection portion of the resin pipes (10, 10), after removing the foreign matter such as soil during transportation for construction, and first insert the circle heat shrink band 200 into one resin pipe (10, 10), The resin tubes 10, 10 are aligned horizontally. As shown in FIG. 5A, the joints of the resin tubes 10 and 10 are bonded to the liner 100 so that the joints of the resin tubes 10 and 10 are centered to maintain the watertightness primarily. After holding the position of the circle heat shrink band 200 in the center portion of the liner 100 and removing the release paper 500 and the aluminum sheet 600 of the circle heat shrink band 200, the center of the circle heat shrink band 200 As the fire is applied to the outer surface using the torch oxide flame from the site, as described above, the crosslinked PE yarn 201 of the circle heat shrink band 200 is contracted, and the adhesive coating layer 400 is melt-bonded. The circle heat shrink band 200 is integrally bonded to the joints of the resin pipes (10, 10).

The aluminum sheet 600 is bonded to the stepped joint of the inner surface of the circle heat shrink band 200, the adhesive bond layer 400 that is a step joint of the circle heat shrink band 200 as shown in Figure 7a, b It is. In addition, the adhesive coating layer 400 and the aluminum sheet 600 are protected by the release paper 500 as shown in FIGS. 2A and 2B. As a result, the aluminum sheet 600 is protected and transported together by the release paper 500 of the circle heat shrink band 200, and when used, the release paper 500 of the circle heat shrink band 200 and the aluminum sheet 600 are also used. After the release paper (not shown) of the coating layer 610 is peeled off, it is allowed to adhere to the resin tubes 10 and 10 in the state of FIGS. 7A and 7B.

The connection structure of the resin pipe of the present invention can be installed in various places such as double sewage pipe, PE wire pipe, corrugated steel pipe, and glass fiber composite pipe.

As described above, the present invention is a resin molding comprising a cross-linked PE yarn and a cotton yarn, polyester or glass yarn woven with light and weft yarns, wherein the circle heat shrink band for connecting both resin tubes is made of crosslinked PE or PE for electron irradiation. To form a circle heat shrinkable sheet, and roll the cylinder into a cylindrical shape, and both ends are liner of special material, and the surface layer is composed of crosslinked PE, etc. The present invention in the formation of the seam of the circle heat shrink band for connecting the resin tube to the resin heat-seal band to be bonded by a special adhesive sheet that melts and does not flow down, the metal binding member to the seam where both ends of the circle heat shrink band overlap and the adhesive sheet is bonded. Bonding at both ends of the circle heat shrink band is made to be fixed at equal intervals to increase the adhesive strength. As a binding force, the binding member prevents deformation that can weaken the adhesive force due to the change in the temperature of the circulating fluid flowing in the resin tube, which can weaken the adhesive force. Preventing water leakage can prevent safety accidents.

Claims (4)

The liner 100 is adhesively fixed to the connection portions of the resin pipes 10 and 10, and a weave part made of silane crosslinked PE yarn 201 and cotton yarn, polyester or glass yarn 202 on the liner 100. In heat-bonding and fixing the circle heat shrink band 200 obtained by extruding the resin portion 230 to 220, The seam of the circle heat shrink band for connecting the resin tube, characterized in that the binding member 800 is fixed to the seam 700 to which the adhesive sheet 300 is bonded to the outer stepped joint of the circle heat shrink band 200. Binding structure. The method of claim 1, wherein the binding member 800 is a rivet 810, wherein the rivet 810 is a riveting circle heat shrink for connecting the resin pipe, characterized in that the riveting at equal intervals across the seam 700 The seam binding structure of the band. According to claim 1, wherein the binding member 800 is a staple 820, the staple 820 of the circle heat shrink band for connecting the resin tube, characterized in that the stapling step across the seam 700 at equal intervals Seam binding structure. The connection structure of the resin pipe according to claim 1, wherein the aluminum sheet (600) is attached to the step joint of the inner surface of the circle heat shrink band (200).