JP2001105496A - Resin injection method for pipe lining material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curable resin injection method for simply injecting a curable resin of the required amount from an optional site into an optional section inside the pipe lining material and also repairing a cut opening section of the pipe lining material by the heat welding. SOLUTION: A resin injection tube 5 is rolled about and inserted by the fluid pressure into a pipe lining material 1 with its outer face coated with a plastic film of high airtightness, and an uncured thermosetting resin 2 is injected into the pipe lining material 1 through the inside of the resin injection tube 5. In concrete, a part of the pipe lining material 1 is cut and opened to form an opening, and the fluid pressure is applied to the resin injection tube 5, and the resin injection tube 5 is rolled about and inserted from the opening into the pipe lining material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for injecting resin into a pipe lining material used for lining a pipe.

[0002]

2. Description of the Related Art When a pipeline such as a sewer pipe buried underground is deteriorated, the pipeline is repaired by lining its inner peripheral surface without excavating the pipeline from the ground. A pipe lining method has been proposed and is already in practical use. As one of such pipe lining methods, after the pipe lining material is invertedly inserted into the pipe by fluid pressure, the pipe lining material is pressed against the inner wall of the pipe, and the curable material impregnated in the pipe lining material is impregnated. There is known one in which a resin is cured.

[0003] By the way, the pipe lining material used in the pipe lining method is constituted by impregnating an uncured liquid curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film. However, the operation of impregnating the tube lining material with the curable resin is performed as follows. That is, a curable resin is injected into the inside of the tube lining material, and the curable resin is sucked and impregnated into the tube lining material (tubular resin adsorbent) by evacuating the tube lining material with a vacuum pump.

[0004] When the length of the pipe lining material is long, the amount of the curable resin to be impregnated over the entire length of the long pipe lining material increases, and a large amount of the curable resin is added to the inside of the pipe lining material at a time. And it was not easy to impregnate it into the tube lining material. That is, not only a long working space is required for injecting a large amount of curable resin into the inside of the pipe lining material at one time and impregnating the same over the entire length of the pipe lining material, but also a long working space is required. Since the weight is large, the labor for moving the pipe lining material in the length direction becomes excessive, and there is a problem that a large tensile force acts on the pipe lining material and the pipe lining material is elongated.

[0005] Therefore, instead of injecting a large amount of curable resin into the inside of the pipe lining material at a time, a method of injecting the curable resin into the pipe lining material in a plurality of times has been conventionally implemented. . The method is shown in FIG. 14 and FIG.

FIG. 14 is a cross-sectional view showing a resin impregnation operation in a factory. In the resin impregnation operation, the folded and multilayered tube lining material 101 is stretched from its end and set horizontally. The curable resin 102 is injected on the way. That is, the uncured liquid curable resin 102 is accommodated in a resin tank 103, and a resin hose 104 extends from the bottom of the resin tank 103.
05 is attached. And the resin injection nozzle 1
05 is inserted in the middle of the pipe lining material 101, and a predetermined amount of the curable resin 102 is injected from the resin tank 103 into the pipe lining material 101 through the resin hose 104 and the resin injection nozzle 105.

As described above, when the curable resin 102 is partially injected into the tube lining material 101, the inside of the tube lining material 101 is evacuated by the vacuum pump 107 connected to the vacuum hose 106,
The curable resin 102 is sequentially impregnated into the tubular resin adsorbent of the tube lining material 101 by the negative pressure generated in the tube lining material 101, and the tube lining material 101 passes between a pair of upper and lower gap rollers 114. The pipe lining material 101 adjusted to a predetermined thickness and adjusted in thickness is successively stacked in a tank 108 in a folded state.

Thus, the above operation is performed by using the pipe lining material 101.
Is performed a plurality of times for a predetermined length of the pipe lining material 101 by dividing the necessary curable resin 102 into a plurality of times.
This can be impregnated into the pipe lining material 101 while being injected during the process.

FIG. 15 shows a resin impregnation operation at the construction site. The operation is the same as the operation at the factory shown in FIG. 14, but in this case, the pipe lining material 101 is impregnated with the curable resin 102 while being impregnated. In addition, the pipe lining material 101 impregnated with the curable resin 102 is simultaneously inverted into the pipe 110. That is, the tube lining material 101 impregnated with the curable resin 102 and passed between the gap rollers 114 has one end folded outward as illustrated,
The folded end is attached to the outer periphery of the upper end of a top collar 115 installed on the ground.

When water is injected into the pipe lining material 101 from the one end opening of the pipe lining material 101 attached to the top collar 115 by a water injection hose 116, the pipe lining material 101 is inverted by the water pressure while the pipe line 110 is inverted. It is sequentially inserted in.

[0011]

By the way, in the conventional resin impregnation method shown in FIGS. 14 and 15, a part of the pipe lining material 101 is cut out and the resin injection nozzle 105 is inserted. It is necessary to cover the cut-out part with a plastic film, for example, to repair it. However, the plastic film adhered to the outer surface of the pipe lining material 101 is a film that cannot be bonded with an adhesive such as polyethylene. In this case, a plastic film for closing the cut-out portion of the pipe lining material 101 has to be thermally welded.

However, since the cut portion of the tube lining material 101 (that is, the portion into which the resin injection nozzle 105 is inserted) and the portion into which the curable resin 102 is injected are at the same position, when the plastic film is heat-welded, When the curable resin 102 impregnated in the tube lining material 101 is particularly a thermosetting resin, there is a problem that the periphery of the heat-welded portion is heated and the thermosetting resin is cured.

When the resin injection nozzle 105 is extracted from the pipe lining material 101 after the injection of the curable resin,
There is also a problem that the curable resin 102 remaining in the resin injection nozzle 105 spills into and out of the pipe lining material 101 and stains the periphery.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object thereof is to easily inject a required amount of a curable resin into an arbitrary portion inside a pipe lining material from an arbitrary portion. An object of the present invention is to provide a method of injecting a curable resin into a pipe lining material.

Further, the present invention provides a method for injecting a curable resin into a tube lining material, which can repair a cut-out portion of the tube lining material by heat welding and can prevent contamination by a surrounding curable resin. It is in.

[0016]

In order to achieve the above object, the invention according to the first aspect of the present invention is directed to a method in which a fluid is introduced into a pipe lining material having an outer surface of a tubular resin adsorbent covered with a highly airtight plastic film. The resin injection tube is inverted and inserted by pressure, and the uncured liquid curable resin is injected into the tube lining material through the resin injection tube.

According to a second aspect of the present invention, in the first aspect of the present invention, a part of the tube lining material is cut open to form an opening, and a fluid pressure is applied to the resin injection tube to cause the resin injection tube to work. Is inserted into the inside of the pipe lining material from the opening.

According to a third aspect of the present invention, in the second aspect of the present invention, after the resin is injected, a plastic film is thermally welded to the tube lining material to close the opening formed in the tube lining material. And

According to a fourth aspect of the present invention, in the first or second aspect of the present invention, the resin injection tube is formed of a flat tube under no pressure.

According to a fifth aspect of the present invention, in the first to third or fourth aspects of the present invention, the resin injection tube at the time of resin injection has a two-layer structure of an inner layer and an outer layer, and a resin inlet of the resin injection tube. Is characterized in that the inner layer and the outer layer are not connected to each other, and the inner layer and the outer layer are connected at the resin discharge port.

According to a sixth aspect of the present invention, in the first to fourth or fifth aspects of the present invention, the resin injection tube is reversely inverted by applying fluid pressure to the resin injection tube after the resin injection. It is characterized by being extracted from the pipe lining material.

A seventh aspect of the present invention is characterized in that, in the first to fifth or sixth aspects of the present invention, a part of the pipe lining material is inserted upside down into a pipe.

Therefore, according to the present invention, the resin injection tube is invertedly inserted into the tube lining material by the fluid pressure, and the uncured liquid curable resin is injected into the tube lining material through the resin injection tube. With this configuration, it is possible to easily inject a required amount of the curable resin from an arbitrary portion into an arbitrary portion inside the pipe lining material.

Further, according to the present invention, since the insertion portion of the resin injection tube of the tube lining material and the portion into which the curable resin is injected are located at a distance from each other, the cut portion of the tube lining material is formed of a plastic film. Even when sealing is performed by heat welding, the portion is not cured because the curable resin does not exist in that portion.

Further, according to the present invention, when the resin injection hose is reversely inverted while applying a fluid pressure to the resin injection tube and pulled out from the tube lining material, the surface of the resin injection tube to which the curable resin adheres is obtained. Since the resin injection tube is located on the inner surface of the inverted resin injection tube, the curable resin adhering to the resin injection tube does not leak when the resin injection tube is pulled out from the tube lining material and contaminate the surroundings.

[0026]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 3 are sectional views showing a pipe lining method in the order of steps. In the pipe lining method according to the present embodiment, lining is performed while impregnating a pipe lining material with a curable resin at a construction site. In this method, an uncured thermosetting resin 2 is impregnated in a pipe lining material 1 on the ground as shown in FIG.

In FIG. 1, reference numeral 10 denotes a pipe such as a sewer pipe buried underground, and a manhole 11 opening to the ground is connected to the pipe 10.

Here, the pipe lining material 1 not yet impregnated with the thermosetting resin 2 is a tubular resin adsorbent 1b whose outer surface is covered with a highly airtight plastic film 1a.
(See FIG. 4). In addition, the tubular resin adsorbent 1
b is a non-woven fabric made of polyester fiber, non-woven fabric of acrylic, polypropylene, vinylon, etc., glass fiber, woven fabric, chop or a composite member obtained by integrating non-woven fabric and glass fiber woven fabric and chop by punching, and covering the outer surface thereof As the plastic film 1a to be used, a polyethylene or polyurethane film or a composite film containing nylon, EVOH, polyethylene or the like is used.

In the middle of the pipe lining material 1 having the above structure, a predetermined amount of the uncured thermosetting resin 2 is supplied from the resin tank 3 installed on the ground as shown in FIG. The resin is injected through a resin injection tube 5 connected thereto. As the thermosetting resin 2, an unsaturated polyester resin, a vinyl ester resin, an epoxy resin, or the like is used. The resin is forcibly injected into the pipe lining material 1 by a resin pump (not shown). May be.

Here, a method for injecting a curable resin according to the present invention will be described with reference to FIGS. 4 to 7 are sectional views showing the curable resin injection method according to the present invention in the order of steps, FIG. 8 is an enlarged sectional view taken along line AA of FIG. 5, and FIG. 9 is an enlarged sectional view taken along line BB of FIG. FIGS. 10 and 11 are partial perspective views showing a repair state of a cut-out portion of the pipe lining material, and FIGS.
2 is a cross-sectional view showing a method of injecting a curable resin from an end end opening of a pipe lining material, and FIG. 13 is an enlarged cross-sectional view taken along line CC of FIG.

When the thermosetting resin 2 is injected into the pipe lining material 1, a part of the pipe lining material 1 is cut open to form an opening 1A, as shown in FIG. The injection tube 5 is inserted as shown in FIG. 4, and the resin injection tube 5 is inserted upside down into the tube lining material 1 by fluid pressure.

That is, as shown in FIG. 4, one end (tip) of the resin injection tube 5 is folded outward, and the folded end passes through the unreversed portion of the resin income tube 5 by the squeezing tool 6. It is fixed with enough strength to obtain,
Therefore, a sealed space S1 is provided inside the already inverted portion from the portion fixed by the squeezing tool 6 of the resin injection tube 5.
Is formed. The resin injection tube 5 is a flexible tube having a flat shape under no pressure, and is made of polyethylene, a composite containing polyethylene, nylon, vinylon, vinyl chloride, EVOH, nylon or EVO.
A complex containing H, silicone, and vinylon are selected.
Alternatively, the resin injection tube 5 may be formed of a tubular body in which the outer surface of nylon or polyester woven fabric or nonwoven fabric is covered with a plastic film.

Thus, the end of the air hose 8 connected to the compressor 7 is inserted into the closed space S1 formed inside the resin injection tube 5, and
Is driven to supply compressed air into the closed space S1,
The resin injection tube 5 is sequentially inserted into the inside of the pipe lining material 1 while being inverted by the pressure of the compressed air as shown in FIG.

As described above, the resin injection tube 5 is sequentially and reversely inserted into the inside of the tube lining material 1, the half length of the resin injection tube 5 is inverted, and the end is fixed by the squeezing tool 6. When reaching the distal end portion, the end end is overlapped with the front end portion as shown in FIG. 5, the distal end portion of the resin hose 4 is inserted into the opening of the overlapped portion, and the resin injection tube 5 is fastened by the fastener 9. The overlapped end is attached to the tip of the resin hose 4.
Then, the resin injection tube 5 attached to the distal end of the resin hose 4 has a two-layer structure including the inner layer 5A and the outer layer 5B (see FIG. 8), and the fixed portion attached to the distal end of the resin hose 4. (Resin inlet), inner layer 5A and outer layer 5B
Are not connected, and the inner layer 5A and the outer layer 5B are connected at the opening (resin discharge port) at the tip.

Then, as shown in FIG. 5, when the resin injection tube 5 is inserted upside down into the tube lining material 1 and the resin hose 4 is attached to one end (resin inflow portion) of the injection tube 5, the tube lining material is 1 resin injection tube 5
1 is lifted by a bar 12 as shown in the drawing. In this state, a predetermined amount of thermosetting resin 2 is supplied from a resin tank 3 through a resin hose 4 to a resin lining tube 5 from a resin injection tube 5 as shown in FIG. 1 inside.
After the thermosetting resin 2 is injected into the inside of the tube lining material 1, a part of the tube lining material 1 is
It may be lifted by two.

Incidentally, even when the injection amount of the thermosetting resin 2 into the tube lining material 1 is large and the resin injection length is long, and the distance between the resin injection point and the insertion opening of the resin injection tube 5 is long, FIG. As shown in (1), the resin injection tube 5 can be easily inverted and inserted over a long range inside one of the tube lining materials.

When a predetermined amount of the thermosetting resin 2 is injected into the tube lining material 1 as described above, the fluid pressure is applied to the resin injection tube 5 as shown in FIG. When one end of the inner layer 5A of the resin injection hose 5 is pulled in the direction of the arrow in FIG. 7 to reverse the resin injection tube 5, the resin injection tube 5 can be pulled out from the pipe lining material 1. In this case, since the inner surface of the inner layer 5A of the resin injection tube 5 to which the thermosetting resin 2 has adhered is located on the inner surface of the resin injection tube 5 which is inverted, the thermosetting resin 2 which has adhered to the resin injection tube 5 is When the resin injection tube 5 is pulled out from the pipe lining material 1, the resin does not leak into and out of the pipe lining material 1 and contaminate the surroundings.

When the resin injection tube 5 is pulled out of the pipe lining material 1 as described above, an opening 1A opened on the outer surface of the pipe lining material 1 is sewn as shown in FIG. The opening 1A is air-tightly sealed by covering with a plastic film 13 from above the closed portion and thermally welding the plastic film 13 to the plastic film 1a of the pipe lining material 1. in this case,
The opening 1A of the tube lining material 1 into which the resin injection tube 5 is inserted is separated from the portion of the thermosetting resin 2 injected into the inside of the tube lining material 1, and the vicinity of the opening 1A of the tube lining material 1 Is raised by the bar 12, the thermosetting resin 2 does not adhere to the inner surface near the opening 1A of the pipe lining material 1. Therefore,
As described above, even if the vicinity of the opening 1A of the tube lining material 1 is heated to thermally weld the plastic film 13 to the plastic film 1a of the tube lining material 1, the thermosetting resin 2 does not exist in that portion. The part does not harden. The opening 1A of the pipe lining material 1
As the plastic film 13 for closing the pipe, the same material as the plastic film 1a attached to the outer peripheral surface of the pipe lining material 1 is used.

When the opening 1A of the pipe lining material 1 is hermetically closed as described above, the pipe lining material 1 is evacuated and the inside of the pipe lining material is depressurized as in the conventional case. Then, the thermosetting resin 2 is impregnated into the tubular resin adsorbent 1b of the pipe lining material 1 by the negative pressure generated in the pipe lining material 1.

As shown in FIGS. 12 and 13, a resin injection tube 5 is inserted into the tube lining material 1 upside down by fluid pressure from an end opening of the tube lining material 1, and the resin injection tube 5 is As described above, a curable resin may be injected into the pipe lining material 1.
In FIG. 12, reference numeral 2 denotes a curable resin previously injected.

In the present embodiment, the work of injecting and impregnating the thermosetting resin 2 into the pipe lining material 1 is performed at the lining construction site, and the pipe lining material 2 impregnated with the thermosetting resin 2 is As shown in FIG. 1, the thickness is adjusted to a predetermined thickness by passing between a pair of upper and lower gap rollers 14. The pipe lining material 1 impregnated with the thermosetting resin 2 and passed between the gap rollers 14 is shown in FIG.
As shown in (1), one end is folded outward, and the folded end is attached to the outer periphery of the upper end of the top collar 15 installed on the ground.

Then, as shown in FIG. 1, when water is injected into the pipe lining material 1 from the one end opening of the pipe lining material 1 attached to the top collar 15 by the water injection hose 16, the pipe lining material 1 The pipe lining material 1 is inserted into the pipe 10 while being inverted. When the pipe lining material 1 is inserted into the pipe 10 by a predetermined length, water is introduced into the pipe lining material 1 as shown in FIG. A pressurized space S 'sealed by the above is formed, and one end of an air hose 17 previously attached to the outer surface (the inner surface after reversal) of the pipe lining material 1 is opened in the pressurized space S'.

The air hose 17 extends to the ground through the inside of the inverted pipe lining material 1, and a compressor 18 is connected to the extending end. Therefore,
When the compressor 18 is driven to supply the compressed air from the air hose 17 to the pressurized space S ′, the pipe lining material 1 receives the pressure of the compressed air and reverses the pipe line 1.
0 is sequentially inserted.

As described above, the pipe lining 1 is sequentially impregnated with the thermosetting resin 2 on the ground, and at the same time, the pipe lining material 1 impregnated with the thermosetting resin 2 is connected to the pipe line 1.
0 is sequentially inverted and inserted.

As shown in FIG. 3, when the pipe lining material 1 impregnated with the thermosetting resin 2 is inserted upside down into the pipe 10 over its entire length, the pipe lining material 1 A hot water hose 19 is drawn inside. A plurality of jet ports (not shown) are formed in the hot water hose 19, and one end thereof is attached to an end end (closed end) of the pipe lining material 1 via a hose attachment belt 20.

When the pipe lining material 1 is inserted upside down into the pipe 10 over its entire length, a head collar 21 is hermetically attached to the top of the top collar 15 as shown in FIG. A sealed space S is formed inside the head collar 21 and the pipe lining material 1.

As shown in FIG. 3, a hot water discharge hose 22 is introduced into the closed space S through the head collar 21 in an airtight manner.
One end facing the closed space S is opened at the bottom of the pipe lining material 1, and the other end penetrates the head collar 21 and is closed.
It extends outside and opens above a hot water tank 23 installed on the ground. A valve 24 is provided in the middle of the hot water discharge hose 19. The hot water tank 23 contains hot water.

On the other hand, the hot water hose 19 extends airtightly through the head collar 21 to the outside of the closed space S, and its end is connected to the lower side wall of the hot water tank 23 installed on the ground. On the way, hot water pump 25 and valve 2
6 and a boiler 27 are provided.

In the state shown in FIG. 3, the internal pressure of the closed space S is kept constant by compressed air supplied from the compressor 28 to the closed space S via the air hose 29, and the pipe lining material 1 is expanded. This is pipe 10
While the pipe lining material 1 is pressed against the inner wall, the pipe lining material 1 is heated with hot water to cure the thermosetting resin 2 impregnated therein. The hardening operation of the pipe lining material 1 is performed as follows.

That is, the hot water pump 25 and the boiler 27 are driven and the hot water in the hot water tank 23 is heated to a predetermined temperature by the boiler 27.
When it is sent into the inside of the pipe lining material 1 through 9,
As shown in FIG. 3, the hot water is jetted out (shower) in a shower shape from a plurality of jet ports provided in the hot water hose 19 and is used for heating the pipe lining material 1. Then, the hot water that has been provided for heating the pipe lining material 1 and has dropped in temperature accumulates at the bottom of the pipe lining material 1, and the stored hot water is pushed out to the hot water discharge hose 22 by the internal pressure of the closed space S,
The water is discharged out of the closed space S through the hot water discharge hose 22 and returned to the hot water tank 23.

Thereafter, in the same manner as above, the pipe lining material 1
Is heated by hot water continuously showered from a hot water hose 19, the thermosetting resin 2 impregnated in the pipe lining material 1 is hardened by heat, and the hardened pipe lining material 1 causes the inner peripheral wall of the pipe 10 to be hardened. Is lined and repaired.

[0053]

As is apparent from the above description, according to the present invention, the resin injection tube is inverted and inserted into the inside of the tube lining material by fluid pressure, and the uncured liquid curable resin is passed through the resin injection tube. Is injected into the inside of the pipe lining material, so that the required amount of the curable resin can be easily injected into an arbitrary part inside the pipe lining material from an arbitrary location.

Further, according to the present invention, since the insertion portion of the resin injection tube of the tube lining material and the portion into which the curable resin is injected are located at a distance from each other, the cut-out portion of the tube lining material is formed of a plastic film. Even when sealing is performed by heat welding, the effect is obtained that the portion is not cured because the curable resin does not exist in that portion.

Further, according to the present invention, the resin injection hose is reversely inverted while applying fluid pressure to the resin injection tube, and is pulled out of the tube lining material. Is located on the inner surface of the inverted resin injection tube, so that the curable resin adhered to the resin injection tube does not leak when the resin injection tube is pulled out of the tube lining material and contaminate the surroundings. Can be

[Brief description of the drawings]

FIG. 1 is a sectional view showing a resin injection method and a pipe lining method according to the present invention.

FIG. 2 is a sectional view showing a pipe lining method.

FIG. 3 is a sectional view showing a pipe lining method.

FIG. 4 is a cross-sectional view showing a curable resin injection method according to the present invention.

FIG. 5 is a cross-sectional view showing a curable resin injection method according to the present invention.

FIG. 6 is a cross-sectional view showing a curable resin injection method according to the present invention.

FIG. 7 is a cross-sectional view showing a curable resin injection method according to the present invention.

FIG. 8 is an enlarged sectional view taken along line AA of FIG. 5;

FIG. 9 is an enlarged sectional view taken along line BB of FIG. 7;

FIG. 10 is a partial perspective view showing a repair state of a cut-out portion of the pipe lining material.

FIG. 11 is a partial perspective view showing a repair state of a cut-out portion of the pipe lining material.

FIG. 12 is a cross-sectional view showing a method of injecting a curable resin from an end end opening of a pipe lining material.

FIG. 13 is an enlarged sectional view taken along line CC of FIG. 12;

FIG. 14 is a cross-sectional view showing a conventional resin impregnation method in a factory.

FIG. 15 is a sectional view showing a conventional resin impregnation method at a construction site.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pipe lining material 1A opening 1a plastic film 1b tubular resin adsorbent 2 thermosetting resin (uncured liquid curable resin) 5 resin injection tube 5A inner layer 5B outer layer 10 conduit 13 plastic film

 ──────────────────────────────────────────────────続 き Continuation of the front page (71) Applicant 592004301 All Co., Ltd. 1-194, Hayashi, Tokorozawa-shi, Saitama 4 (72) Inventor Takao Kamiyama 31-27 Daikancho, Hiratsuka-shi, Kanagawa Shonan Synthetic Resin Co., Ltd. In-house (72) Inventor Yasuhiro Yokoshima 175-3 Shinoyama, Ishishita-cho, Yuki-gun, Ibaraki Pref.Yokoshimanai Co., Ltd. (72) Inventor Shigeru Endo 2-12-4 Hanahata, Tsukuba, Ibaraki Pref. Inventor Hiroyuki Aoki 1-194 Hayashi, Tokorozawa-shi, Saitama F-term in all four companies (reference) 3H025 EA01 EB23 ED02 4F211 AD05 AD12 AG08 AH43 SA14 SC03 SD04 SD11 SD13 SH18 SH19 SH20 SJ01 SJ31 SN03 SP12

Claims (7)

[Claims] 1. A resin injection tube is reversely inserted by fluid pressure into a tube lining material in which the outer surface of a tubular resin adsorbent is covered with a highly airtight plastic film,
A method of injecting resin into a tube lining material, wherein an uncured liquid curable resin is injected into the tube lining material through the resin injection tube. 2. A portion of the tube lining material is cut open to form an opening, and fluid pressure is applied to the resin injection tube to insert the resin injection tube upside down from the opening into the inside of the tube lining material. 2. The method for injecting resin into a pipe lining material according to claim 1, wherein: 3. The resin injection into the pipe lining material according to claim 2, wherein after the resin injection, a plastic film is thermally welded to the pipe lining material to close the opening formed in the pipe lining material. Method. 4. The method for injecting resin into a tube lining material according to claim 1, wherein the resin injection tube is formed of a tube that is flat under no pressure. 5. The resin injection tube at the time of resin injection has a two-layer structure of an inner layer and an outer layer, wherein the inner layer and the outer layer are not connected at the resin inlet of the resin injection tube, and the inner layer and the outer layer are not connected at the resin discharge port. The method for injecting resin into a pipe lining material according to claim 1, wherein the resin is connected. 6. The resin injection tube is reversely inverted while applying a fluid pressure to the resin injection tube after the resin injection, so that the resin injection tube is extracted from the tube lining material. Injection method of resin into pipe lining material. 7. The method for injecting resin into a pipe lining material according to claim 1, wherein a part of the pipe lining material is inserted upside down into a pipe.