JP2018001544A - Method for renovating existing pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for renovating an existing pipe that allows smooth insertion of a lining material in a state where a cylindrical film is applied in the existing pipe and that can prevent the cylindrical film from damages.SOLUTION: The method of the present invention for renovating an existing pipe comprises the steps of: inserting in the existing pipe a cylindrical film extending from one end to another end in the axial direction of the existing pipe; and supplying a cylindrical lining material from one end side of the existing pipe into the internal space of the cylindrical film while making the pressure of internal space of the cylindrical film positive and adhering the lining material to an inside surface of the cylindrical film.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a method for rehabilitating existing pipes.

  When existing pipes such as sewer pipes, water pipes, and agricultural water pipes buried in the ground are aged, rehabilitation is carried out by lining the inner surface of the pipes without excavating the pipes. Various construction methods have been proposed and put into practical use. As one of such rehabilitation methods, a method called reverse insertion has been proposed. This construction method is performed as follows. First, a lining material impregnated with an uncured thermosetting resin is wound up on a roll in a sealed container called a reversing machine. Next, the lining material is reversely inserted into the existing pipeline while the lining material is fed from the reversing machine while using the pressure of the compressed air. Following this, hot water vapor is supplied into the lining material. As a result, the thermosetting resin is cured by heating, and the lining material is brought into close contact with the existing pipe. Thus, a new rehabilitation pipe is formed in the existing pipe.

  However, when there is intrusion water from the outside in the existing pipe, the curable resin may not be cured, resulting in poor construction. On the other hand, for example, in Patent Document 1, before constructing the lining material, a tubular film made of a thin resin called a pre-liner is installed in the existing pipe, and the lining material is inverted and inserted therein. And a method of performing construction is disclosed.

Japanese Patent Laid-Open No. 1-182025

  However, the method of Patent Document 1 has the following problems when the lining material is inverted and inserted into the cylindrical film. That is, in order to reversely insert the lining material into the cylindrical film, the cylindrical film must contact the inner wall surface of the existing pipe to form a cylindrical inner space. If the inner wall surface is not properly contacted, the internal space is closed, and there is a problem that the lining material cannot be inverted and inserted. Here, if the lining material is forcibly inserted, there also arises a problem that the tubular film is broken.

  In general, it is often difficult to promote reverse insertion of a lining material in a pipe having a small diameter or an existing pipe having a bend. In that case, a method is adopted in which a belt is arranged in advance in the lining material, and the belt is pulled from the arrival side to assist the reversal. However, when the tubular film is installed, the traction belt passes through the inside of the tubular film. Therefore, if the inner space of the tubular film is closed, the tubular film is rubbed and damaged by the traction belt. Occur.

  Note that the above-described problem is a problem that can occur not only when the lining material is reversely inserted, but also when it is retracted.

  The present invention has been made to solve the above-described problem, and can smoothly insert a lining material and prevent damage to the tubular film in a state where the tubular film is applied to the existing pipe. The purpose is to provide a method for rehabilitating existing pipes.

  The existing pipe rehabilitation method according to the present invention includes a step of inserting a cylindrical film extending from one end portion in the axial direction of the existing pipe toward the other end portion into the existing pipe, and an internal space of the cylindrical film. Supplying a cylindrical lining material from one end side of the existing pipe to the internal space of the cylindrical film, and bringing the lining material into close contact with the inner wall surface of the cylindrical film. ing.

  According to this structure, this internal space can be expanded by making the internal space of a cylindrical film into a positive pressure. Thereby, since a cylindrical film spreads so that the inner wall surface of an existing pipe may be contacted, it becomes easy to insert a lining material into the internal space of a cylindrical film from the one end side of an existing pipe. That is, it can prevent that a cylindrical film inhibits insertion of a lining material. Furthermore, damage to the tubular film due to the lining material being caught on the tubular film can be prevented. In addition, for example, when the lining material is pulled from the other end side of the existing pipe by a towing belt, this belt passes through the inner space of the tubular film, and in that case, the tubular film Can be prevented from being rubbed and damaged by the belt.

  In the above-described existing pipe rehabilitation method, at least one exhaust port is formed in a region extending outward from the other end portion of the existing tube of the tubular film, and the tubular film is formed from the other end portion side of the existing tube. By supplying air to the internal space, the internal space of the tubular film can be set to a positive pressure.

  If it does in this way, since the air etc. which were supplied in the cylindrical film will be discharged | emitted from an exhaust port, the pressure in a cylindrical film can be kept moderate.

  In each of the above-described existing pipe rehabilitation methods, the lining material can be supplied into the existing pipe by various methods. For example, the lining material can be brought into close contact with the inner wall surface of the cylindrical film by reverse insertion.

  In each of the above-described existing pipe rehabilitation methods, the lining material is configured to be inverted and inserted by being unwound from a state of being wound on a lining material feeding roll, and is connected to the last of the lining material. A lining material reversal belt passing through the inner space of the lining material wound around the feed roll and extending to the other end side of the existing pipe, and pulling the lining material reversal belt Thus, it is possible to assist the reverse insertion of the lining material.

  According to this configuration, the lining material reversal belt can be pulled by being connected to a belt or the like already passed through the existing pipe. The belt here does not necessarily mean a belt-like belt, but includes a belt that is formed in a long shape that can withstand traction, including a string such as a rope. This also applies to a cylindrical film belt described later.

  In each of the above-described existing pipe rehabilitation methods, the tubular film is configured to be reversed and inserted by being unwound from a state wound on the tubular film feed roll, and wound around the tubular film feed roll. The tubular film control belt material connected to the tail end of the tubular film taken and wound on the tubular film feeding roll prior to the tubular film, the tubular film being installed in an existing pipe Then, the tubular film control belt and the lining material reversing belt are connected to each other, and the lining material reversing belt is pulled together with the tubular film control belt, thereby reversing and inserting the lining material. Can be.

  According to this structure, the control belt for cylindrical films is connected with the tail end of a cylindrical film, and is wound up by the supply roll for cylindrical films prior to the cylindrical film. Therefore, even after the tubular film is all fed from the tubular film feed roll, the rotation of the feed roll can be transmitted to the tubular film via the tubular film control belt. Therefore, the reverse insertion speed of the tubular film can be controlled.

  Furthermore, after the tubular film is reversed and inserted, if the tubular film control belt is connected to the lining material reversal belt, the tubular film control belt is pulled to pull the lining material reversal belt. be able to. Thereby, for example, the reverse insertion of the lining material in the existing pipe having a small diameter can be easily performed. Moreover, when the existing pipe is bent or curved, the direction of the reverse insertion of the lining material can be adjusted to the direction of the existing pipe by pulling the lining material reversal belt.

  In the existing pipe rehabilitation method, in the tubular film, at least one exhaust port may be formed in a region extending from the other end portion of the existing pipe to the outside, and the lining material reversal belt includes the exhaust pipe It can be pulled out from the mouth to the outside of the tubular film.

  If it does in this way, an exhaust port can be used for both discharge | emission of the supplied air, and drawing | extracting to the exterior of the reversal belt for lining materials.

  In the above-described existing pipe rehabilitation method, the discharge port may be formed on a substantially extended line of the axis of the existing pipe.

  In this way, since the lining material reversal belt is pulled along the axis of the existing pipe, the pulling force of the reversing belt can be effectively transmitted to the lining material reversal insertion.

  In the rehabilitation method for each existing pipe, a lubricant can be applied to the inner wall surface of the cylindrical film.

  Thereby, it can prevent that a lining material catches with respect to a cylindrical film, and can make both closely_contact | adhere smoothly.

  In each of the above existing pipe rehabilitation methods, it can be inserted into the existing pipe by various methods. For example, it can be inserted into the existing pipe by reverse insertion or retraction insertion.

  According to the present invention, it is possible to smoothly insert the lining material in a state where the tubular film is applied, and to prevent the tubular film from being damaged.

It is sectional drawing of the existing pipe to which the repair method of the existing pipe which concerns on one Embodiment of this invention is applied. It is sectional drawing of a reversing machine. It is a side view of a cylindrical film. It is sectional drawing which shows a mode that a cylindrical film is let out from a reversing machine. It is a figure which shows construction of a cylindrical film. It is a figure which shows construction of a cylindrical film. It is a figure which shows construction of a cylindrical film. It is a side view of a lining material. It is a figure which shows construction of a lining material. It is a figure which shows construction of a lining material. It is a figure which shows construction of a lining material. It is a figure which shows construction of a lining material. It is a figure which shows the other example of construction of a lining material. It is a figure which shows the other example of construction of a lining material.

  Hereinafter, an embodiment of a method for rehabilitating an existing pipe according to the present invention will be described with reference to the drawings.

<1. Existing pipe>
First, an existing pipe to which the rehabilitation method according to the present embodiment is applied will be described. As shown in FIG. 1, the existing pipe 1 is formed in a cylindrical shape and extends in the horizontal direction in the ground so as to connect two vertical shafts. Here, the left vertical shaft in FIG. 1 is referred to as a first vertical shaft 21, and the right vertical shaft is referred to as a second vertical shaft 22. In the existing pipe 1, the end opening connected to the first shaft 21 is the first opening (one end) 11, and the end opening connected to the second shaft 22 is the second opening (other end) 12. It shall be called. In the present embodiment, the tubular film 3 and the lining material 4 are applied in this order to the existing pipe 1. Both are inserted into the existing pipe 1 from the first vertical shaft 21 side. Details will be described below.

<2. Construction of tubular film>
<2-1. Outline of tubular film>
Subsequently, the construction of the tubular film 3 will be described. First, the cylindrical film 3 will be described. The tubular film 3 is formed of a non-breathable resin film formed in a cylindrical shape, and the axial length thereof is equal to or greater than the total length of both the vertical shafts 21 and 22 and the existing pipe 1. It has become. The resin forming the cylindrical film 3 is not particularly limited, but polyethylene, vinyl chloride, vinylon, polyurethane, nylon, polypropylene, and the like can be used. Moreover, the cylindrical film 3 can also be formed with a plurality of layers from any of the materials described above. For example, the cylindrical film 3 can be formed of three layers of polyethylene-nylon-polyethylene. Further, it may be other than resin such as glass, or may be a composite material. Furthermore, a nonwoven fabric or a woven fabric may be used. However, when using a breathable material such as a non-woven fabric, it is necessary to apply a coating or the like so that the air supply described later does not leak, so that the breathability is not present. The circumferential length of the tubular film 3 is substantially the same as the circumferential length of the existing pipe. The thickness of the tubular film 3 is not particularly limited.

<2-2. Cylindrical film insertion equipment>
Next, the equipment used for the construction of the tubular film 3 will be described. Here, a method of inserting the tubular film 3 into the existing pipe 1 by reverse insertion using the reversing machine 5 will be described.

  First, the reversing machine 5 in which the tubular film 3 is accommodated is disposed near the ground of the first vertical shaft 21. As shown in FIG. 2, a feeding roll (cylindrical film feeding roll) 51 around which the cylindrical film 3 is wound is disposed inside the reversing machine 5. The reversing machine 5 has a circular discharge port 52 through which the tubular film 3 fed from the feed roll 51 is discharged, and an injection port 53 for injecting compressed air into the reversing machine in the vicinity of the discharge port 52. And are provided. The reversing machine 5 is connected to a drive source (not shown) for rotating the feeding roll 51 and a compressor 55 (see FIG. 5 and the like) for injecting compressed air into the injection port 53.

  At this time, a first control belt (tubular film control belt) 31 is connected to the rear end of the tubular film 3. And after the cylindrical film 3 is crushed and formed in a strip | belt shape, it is wound up by the delivery roll 51, The 1st control belt 31 is a delivery roll prior to winding of the cylindrical film 3. 51 is wound up. That is, after the first control belt 31 is wound around the feeding roll 51, the tubular film 3 is wound around the feeding roll 51.

<2-3. Reverse insertion of tubular film>
Next, the reverse insertion of the tubular film 3 will be described with reference to FIGS. First, as shown in FIG. 2, the leading end portion of the tubular film 3 is unwound from the feeding roll 51, the leading end opening of the tubular film 3 is widened, and fixed to the discharge port 52 of the reversing machine 5. Subsequently, while driving the feeding roll 51, compressed air is injected into the reversing machine 5, whereby the cylindrical film 3 attached to the discharge port 52 is pushed outward as shown in FIG. The cylindrical film 3 protrudes from the discharge port 52 while being reversed. Then, the end of the tubular film 3 is guided to the first opening 11 of the existing pipe 1 while rotating the feeding roll 51 and injecting compressed air. Thereafter, by further rotating the feeding roll 51 and injecting compressed air, the cylindrical film 3 is inserted into the existing pipe 1 while being reversed, as shown in FIG. Then, the tubular film 3 is further reversely inserted and fed out from the second opening 12 of the existing pipe 1 through the second shaft 22 to the ground.

  Thus, as shown in FIG. 6, the tubular film 3 is disposed across the first vertical shaft 21, the existing pipe 1, and the second vertical shaft 22. In addition, when the cylindrical film 3 is all paid out from the delivery roll 51, the first control belt 31 is delivered subsequently. Since the first control belt 31 is connected to the tail end of the tubular film 3, the first vertical shaft 21, the existing pipe 1, and It passes through the second vertical shaft 22. At this time, the first control belt 31 passes through the internal space of the tubular film 3.

  As described above, when the tubular film 3 reaches near the ground of the second shaft 22, the first control belt 31 is removed from the end portion of the tubular film 3 that has come out of the second shaft 22 to the ground. Then, as shown in FIG. 7, the end portion of the removed first control belt 31 is pulled out from the belt through hole 34 formed in the tubular film 3. The belt through hole 34 can be formed near the ground of the second vertical shaft 22. And the edge part of the pulled-out 1st control belt 31 is connected to the winch which abbreviate | omits illustration. Further, an air supply facility such as a blower 6 is connected to the end of the tubular film 3 so that air can be blown into the internal space of the tubular film 3. Further, on the first shaft shaft 21 side, the tubular film 3 is removed from the discharge port 52 of the reversing machine 5, and the first control belt 31 is pulled out from the end portion of the removed tubular film 3. Thus, the construction of the tubular film 3 is completed.

<3. Construction of lining material>
<3-1. Outline of Lining Material>
Next, the construction method of the lining material 4 will be described. As the lining material 4, a known material formed in a cylindrical shape can be used. For example, as a lining material 4 for reverse insertion, which will be described later, a resin-impregnated layer and an airtight layer impregnated with an uncured thermosetting resin are arranged in this order from the inside in the radial direction to the outside. Can be used. The resin-impregnated layer is formed of a base material such as a nonwoven fabric, a woven fabric, a porous resin, or glass fiber, and the base material is impregnated with a thermosetting resin. As the thermosetting resin, for example, an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, a furan resin, or the like can be used. The hermetic layer can be formed of a non-breathable resin material such as polyethylene or polypropylene, and is coated on the outer peripheral surface of the resin-impregnated layer.

<3-2. Lining material insertion equipment>
Next, the equipment used for the construction of the lining material 4 will be described. Here, a method of inserting the lining material 4 into the existing pipe 1 by reverse insertion using the reversing machine 7 will be described.

  For the reverse insertion of the lining material 4, the reversing machine 7 having the same configuration as that for the tubular film can be used, and therefore the detailed description of the reversing machine 7 is omitted. In addition, since the lining material 4 is thicker than the tubular film 3, the lining material reversing machine 7 is generally larger than the tubular film reversing machine 5. .

  As shown in FIG. 8, a reversing belt (lining material reversing belt) 41 is connected to the rear end portion of the lining material 4 via a rope 43, toward the tip end side over the entire length of the internal space. The reverse belt 41 is passed. Further, a second control belt (lining material control belt) 42 is connected to the rear end portion of the lining material 4 via a rope. Then, the lining material 4 is crushed and formed into a strip shape, and then wound around a feeding roll. At this time, the second control belt 42 is wound around the feeding roll 51 prior to winding the lining material 4.

<3-3. Reverse insertion of lining material>
Next, the reverse insertion of the lining material 4 will be described with reference to FIGS. First, as with the tubular film 3, the end of the lining material 4 is attached to the discharge port of the reversing machine 7, and then the lining material is rotated while the feeding roll is rotated, the compressed air is injected, and the reversing belt 41 is pulled. Pull 4 out of the reversing machine 5. Then, the reverse belt 41 is connected to the first control belt 31 passing through the internal space of the tubular film 3. Then, when the first control belt 31 is pulled by the winch, the reverse belt 41 is pulled. At this time, a guide 15 such as a pulley (see FIG. 10) is provided in the vicinity of the second opening 12 of the existing pipe 1, the first control belt 31 is hooked on the guide 15 and the direction is directed upward, and then the second vertical The winch can be towed from near the ground of the pit 22. As a result, as shown in FIG. 9, the lining material 4 is pulled and its end portion is inserted into the first opening 11 of the existing pipe 1. Thus, the use of the first control belt 31 of the tubular film 3 eliminates the trouble of passing the reversal belt 41 through the inside of the tubular film 3.

  Subsequently, as shown in FIG. 10, the blower 6 is driven to send air into the internal space of the tubular film 3. At this time, the end portion on the first opening 11 side of the tubular film 3 is closed by the end portion of the lining material 4, so that the fed air pushes the internal space of the tubular film 3. Thereby, the cylindrical film 3 spreads so as to be in close contact with the inner wall surface of the existing pipe 1, and the lining material 4 can be smoothly inserted. In addition, since the belt through hole 34 is formed in the cylindrical film 3 as described above, the fed air is discharged from the belt through hole 34. Therefore, it can keep moderate with the internal pressure of the cylindrical film 3 being made positive. In addition, while inserting the lining material 4, you may send air into the internal space of the cylindrical film 3 continuously, and you may blow and stop at an appropriate space | interval.

  Subsequently, as shown in FIG. 11, by rotating the feeding roll 51 of the reversing machine 5, injecting compressed air, and pulling the reversing belt 41, the lining material 4 is reversed and the inside of the tubular film 3 is reversed. It will be inserted into. At this time, since the lining material 4 is reversed, the resin-impregnated layer on the inner surface appears on the outer side and comes into contact with the tubular film 3. Then, the lining material 4 is further reversed, and the reverse insertion is stopped when the lining material 4 protrudes from the second opening 12 of the existing pipe 1 as shown in FIG. Thus, the tubular film 3 and the lining material 4 are arranged in this order on the inner wall surface of the existing pipe 1.

  Finally, high-temperature steam is supplied into the lining material 4 from the first opening 11 side of the existing pipe 1. Thereby, the thermosetting resin of the resin impregnated layer of the lining material 4 is cured, and the resin impregnated layer and the tubular film 3 are bonded. The construction of the tubular film 3 and the lining material 4 is completed through the above steps. In addition, since the cylindrical film 3 is not bonded to the inner wall surface of the existing tube 1, it is possible to cause a slip between the existing tube 1 and the cylindrical film 3. Thereby, when an earthquake etc. generate | occur | produces, for example, transmission of the force which acts on the cylindrical film 3 from the existing pipe 1 can be reduced, and seismic performance can be improved.

<4. Features>
As described above, according to the present embodiment, air is supplied to the internal space of the tubular film 3 from the second opening 12 side of the existing pipe 1 in which the tubular film 3 is disposed. Can be spread. Thereby, since the cylindrical film 3 spreads so as to contact the inner wall surface of the existing pipe 1, it becomes easy to insert the lining material 4 into the internal space of the cylindrical film 3 from the first opening 11 side of the existing pipe 1. That is, it is possible to prevent the tubular film 3 from obstructing the insertion of the lining material 4. Furthermore, damage to the tubular film 3 due to the lining material 4 being caught on the tubular film 3 can also be prevented. Further, when the reverse belt 41 that pulls the lining material 4 passes through the internal space of the tubular film, the tubular film 3 can be prevented from being rubbed and damaged by the reverse belt 41.

<5. Modification>
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to this, A various change is possible unless it deviates from the meaning. The following modifications can be combined as appropriate.

<5-1>
In the said embodiment, although the belt through-hole 34 of the cylindrical film 3 is formed in the ground vicinity of the 2nd vertical shaft, the position of this belt through-hole 34 is not specifically limited. For example, as shown in FIG. 13, it can be provided near the second opening 12 of the existing pipe 1. Then, a guide 9 such as a pulley is disposed outside the belt through-hole 34, and the reversing belt 41 is hooked on the guide 9 to change the direction of traction so as to be directed to the upper side of the second shaft 22. Thereby, since the reversal belt 41 extends in the axial direction of the existing pipe 1, when the belt is pulled, the lining material 4 is pulled along the axis of the existing pipe 1. As a result, the force pulling the reversing belt 41 can be effectively transmitted to the reversal insertion of the lining material 4.

<5-2>
In the above embodiment, the belt through hole 34 formed in the tubular film 3 is shared as a hole through which the reversal belt 41 is passed and an exhaust port, but these can also be provided separately. And if the position of an exhaust port is the exterior of the existing pipe 1, it will not be specifically limited. For example, as shown in FIG. 14, an air supply port 81 and an exhaust port 82 for blowing air can be provided at the end of the tubular film 3 disposed near the ground of the second shaft 22. The shapes of the belt through hole 34 and the exhaust port are not particularly limited, and the cylindrical film 3 may be simply formed with a cut or a hole jig may be attached.

<5-3>
The belt through hole 34 and the exhaust port are not necessarily required, and can be appropriately provided as necessary. For example, the reverse belt 41 can be pulled from the end of the tubular film 3 without providing the belt through hole 34.

<5-4>
The tubular film 3 may be provided with a pressure reducing valve that opens when a predetermined pressure is exceeded. Thereby, it is not necessary to continue to blow into the internal space of the tubular film 3, and it is only necessary to blow into the internal space of the tubular film 3 for a predetermined time before the lining material 4 is inserted. Moreover, in the said embodiment, although the air supply is performed to the internal space of the cylindrical film 3 with the air blower 6, if the internal space of the cylindrical film 3 can be made into a positive pressure, even if it is other methods than this Good.

<5-5>
The attachment positions of the belts 31, 41, 42 described above are not particularly limited, and the belts 31, 42 can be connected to any position of the lining material 4 and the rear end of the tubular film 3. it can. Therefore, it is not always necessary to use a rope, and the belts 31, 41, 42 can be directly connected to the lining material 4 and the tubular film 3. In addition, the second control belt 42 attached to the lining material 4 is not essential, and only the lining material 4 can be taken up and fed out by a feeding roll without being attached.

<5-6>
In the said embodiment, although the cylindrical film 3 and the lining material 4 were inserted in the existing pipe 1 by inversion insertion, it is not limited to this, It can insert in the existing pipe 1 by various methods. For example, the tubular film 3 and the lining material 4 can be inserted into the existing pipe 1 by known pull-in insertion.

  When the lining material 4 is inserted into the tubular film 3 by pull-in insertion, a gap is formed between the inner wall surface of the tubular film 3 and the lining material 4 on the first opening 11 side of the existing pipe 1. However, considering this, it is preferable to perform strong air blowing from the blower 6, for example.

<5-7>
In the said embodiment, although the rehabilitation method of this invention was applied with respect to the existing pipe 1 of linear form, it can be applied also to the existing pipe which is bent or curved other than linear form. In particular, in existing pipes that are bent or curved, it is more likely that the lining material can be used in the tubular film at the bent parts or curved parts. Therefore, it is preferable to apply this method to rehabilitate such existing pipes.

1 Existing pipe 11 1st opening (one end)
12 Second opening (other end)
3 tubular film 31 1st control belt (control belt for tubular films)
4 Lining material 41 Reversing belt (Reversing belt for lining material)

Claims (9)

Into the existing pipe, a cylindrical film extending from one axial end of the existing pipe toward the other end is inserted, and
The inner space of the tubular film is set to a positive pressure, a tubular lining material is supplied from one end of the existing pipe to the inner space of the tubular film, and the lining material is applied to the inner wall surface of the tubular film. Close, step,
Rehabilitation method for existing pipes. At least one exhaust port is formed in a region extending outward from the other end of the existing pipe of the tubular film,
The method of rehabilitating an existing pipe according to claim 1, wherein the internal space of the cylindrical film is made positive by supplying air from the other end side of the existing pipe to the internal space of the cylindrical film.   The method for rehabilitating an existing pipe according to claim 1 or 2, wherein the lining material is brought into close contact with the inner wall surface of the cylindrical film by reversal insertion. The lining material is configured to be reversed and inserted by being fed out from a state wound on a lining material feeding roll.
A reversing belt for a lining material that is connected to the rearmost of the lining material, passes through the internal space of the lining material wound up by the feeding roll, and extends to the other end side of the existing pipe,
The method for rehabilitating an existing pipe according to claim 3, wherein the reverse insertion of the lining material is assisted by pulling the reverse belt for the lining material. The tubular film is configured to be inverted and inserted by being unwound from a state wound on the unwinding roll for the tubular film,
A control belt material for a tubular film, which is connected to the tail end of the tubular film wound on the feeding roll for the tubular film, and wound on the feeding roll for the tubular film prior to the tubular film. Prepared,
After inserting the tubular film into the existing pipe, the tubular film control belt and the lining material reversing belt are connected, and the lining material reversing belt is pulled together with the tubular film control belt. The rehabilitation method for an existing pipe according to claim 4, wherein the lining material is reversely inserted. In the tubular film, at least one exhaust port is formed in a region extending outside from the other end of the existing pipe,
The rehabilitation method for an existing pipe according to claim 4 or 5, wherein the lining material reversal belt is drawn out of the tubular film from the exhaust port.   The said exhaust port is the rehabilitation method of the existing pipe | tube of Claim 6 currently formed on the substantially extended line of the axis line of the said existing pipe | tube.   The rehabilitation method for an existing pipe according to any one of claims 1 to 7, wherein a lubricant is applied to an inner wall surface of the cylindrical film.   The said tubular film is the rehabilitation method of the existing pipe | tube in any one of Claim 1 to 8 inserted in the said existing pipe | tube by inversion insertion or drawing-in insertion.