JPH11235758A - Production of pipe lining material and pipe lining method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a pipe lining material preventing the generation of a bursting by increasing pressure resistant strength and not becoming partially thin after curing. SOLUTION: In a method for producing a pipe lining material by infiltrating a curable resin into a tubular resin adsorbing material 1 of which the outer peripheral surface is coated with a plastic film 2 high in airtightness, the sheet- like resin adsorbing material 1 of which the surface is coated with the plastic film 2 high in airtightness is rounded in a tubular shape to mutually overlap the end parts of the resin adsorbing material 1 and a joining part reinforcing material 3 folded in a U-shape is held between the overlapped parts thereof and the overlapped parts of the resin adsorbing material 1 are sewn along with the joining part reinforcing material 3 to be joined and a hermetically sealing ribbon tape 5 is fused to the surface on the side opposite to the joining part reinforcing material 3 of the joined part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe lining material used for lining an aged pipe and a pipe lining method using the pipe lining material.

[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 the inner peripheral surface thereof without excavating the pipeline from the ground. A pipe lining method is known.

That is, in the pipe lining method described above, a pipe lining material formed by impregnating a curable resin into a flexible tubular resin adsorbent whose inner peripheral surface is covered with a highly airtight plastic film is subjected to fluid pressure. Insert the pipe while turning it upside down, press the pipe lining material against the inner peripheral surface of the pipe, heat the pipe lining material while maintaining the state, and cure the curable resin impregnated in this. This is a method of lining the inner peripheral surface of the pipeline by causing the lining.

[0004] Incidentally, in the production of a pipe lining material used in such a pipe lining method, FIG.
As shown in the figure, the sheet-like resin adsorbent 101 whose surface is coated with a plastic film 102 is rolled into a tube, and its ends are butted against each other. A band-shaped ribbon tape 105 is adhered to the surface of the abutted portion, and the band-shaped back surface is formed. 17A, or the butt portion of the resin adsorbent 201 is connected to the thread 204 as shown in FIG.
And a band-shaped ribbon tape 205 is adhered to the surface of the stitched portion.

[0005]

However, when the tubular lining material formed into a tubular shape as described above is inserted into the pipeline and expanded by fluid pressure and pressed against the inner peripheral wall of the pipeline, Since a strong tensile force acts on the pipe lining material in the circumferential direction, in the pipe lining material having the bonding structure shown in FIG. In addition, the joint reinforcing material 10
1 and the ribbon tape 105 have a short joining span and a large elongation.
As shown in FIG. 6B, there is a problem that the thickness of the cured pipe lining material is partially reduced because the joint reinforcing material 103 is stretched.

Further, in the pipe lining material having the joint structure shown in FIG. 17 (a), the thickness after curing is partially increased due to the large extension of the stitched portion as shown in FIG. 17 (b). There was a problem of becoming thin.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is to provide a high pressure resistance to prevent the occurrence of a burst and to prevent the thickness from being partially reduced after curing. An object of the present invention is to provide a method for manufacturing a pipe lining material and a pipe lining method using the pipe lining material.

[0008]

Means for Solving the Problems To achieve the above object, the invention according to claim 1 comprises impregnating a curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film. In a method of manufacturing a pipe lining material, a sheet-shaped resin adsorbent having a surface coated with a highly airtight plastic film is rolled into a tube, and its ends are overlapped with each other, and a U-shape is formed between the overlapped portions. After sandwiching the joint reinforcing material folded in a shape, the overlapping portion of the resin adsorbent is sewn together with the joint reinforcing material and joined, and then a sealing ribbon tape is attached to the surface of the joint opposite to the joint reinforcing material. It is characterized in that the tubular resin adsorbent is obtained by welding.

According to a second aspect of the present invention, in the first aspect of the present invention, the joint reinforcing material is formed of a nonwoven fabric.

A third aspect of the present invention is characterized in that, in the first aspect of the present invention, the sealing ribbon tape is formed of a film of the same material as the plastic film.

According to a fourth aspect of the present invention, in the first aspect of the present invention, a joint clearance ribbon tape having a two-layer structure of a non-weldable reinforcing material layer and a plastic film layer is formed by combining the plastic film and the sealing ribbon tape. The plastic film layer of the clearance ribbon tape is welded to the plastic film.

According to a fifth aspect of the present invention, there is provided a method for manufacturing a pipe lining material comprising impregnating a curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film, wherein the sheet-like resin adsorbent is provided. The material is rolled into a tube, the ends thereof are overlapped, and a first joint reinforcing material folded in a U-shape is sandwiched between the overlapped portions, and the overlapped portion of the resin adsorbent is placed in the first portion. After sewing and joining together with the joint reinforcing material, a second joint reinforcing material is bonded or welded to a surface of the joint opposite to the first joint reinforcing material to obtain the tubular resin adsorbent. It is characterized by the following.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the tubular resin adsorbent is passed through a plastic tube and a highly airtight inliner is passed through the tubular resin adsorbent. The plastic tube is heated while the inliner and the tubular resin adsorbent are expanded by fluid pressure, and the tubular resin adsorbent is evacuated to make it adhere to the outer surface of the tubular resin adsorbent.

According to a seventh aspect of the present invention, in the fifth aspect of the present invention, the first and second joint reinforcing members are made of a nonwoven fabric.

According to an eighth aspect of the present invention, in the invention of the fifth aspect, the plastic tube is a seamless tube having a three-layered five-layer structure including a high melting point plastic made of nylon (polyamide), polyester or ethylene vinyl alcohol. It is characterized by comprising.

A ninth aspect of the present invention is characterized in that, in the fifth aspect of the present invention, the second joint reinforcing material is bonded to the resin adsorbent with a polyamide hot melt adhesive.

According to a tenth aspect of the present invention, in the invention of the fifth aspect, the joint between the second joint reinforcing material and the resin adsorbent is melted by a burner to make the second joint reinforcing material resin. It is characterized by welding to an adsorbent.

According to an eleventh aspect of the present invention, in the tenth aspect of the present invention, the sewing thread for sewing the overlapping portion of the resin adsorbent is made of inorganic fiber or glass fiber made of glass, carbon, ceramic, metal, asbestos or metal alumina. Is characterized by comprising heat-resistant fibers made of Kevlar or aromatic polyamide having a melting point of 300 ° C. or higher.

According to a twelfth aspect of the present invention, a tube lining material formed by impregnating a curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film is inserted upside down into a pipe by fluid pressure. Then, while the pipe lining material is pressed against the inner wall of the pipe by fluid pressure, the curable resin impregnated in the pipe lining material is cured to line the inner peripheral surface of the pipe with the hardened pipe lining material. in the pipe lining method, characterized in that the thickness t ₂ of the joint portion of the pipe liner bag after curing is set to be t ₁ <t ₂ ≦ 1.3 t ₁ with respect to the thickness t ₁ of the other part And

Therefore, according to the first to third aspects of the present invention, the butted portions of the resin adsorbent constituting the pipe lining material are joined by sewing, and both surfaces of the joined portion are joined by the joining portion reinforcing material and the sealing ribbon tape. Because of the reinforcement, even if a strong circumferential tensile force acts on the pipe lining material, the extension of the sewn portion of the resin adsorbent is suppressed to a small level by the reinforcing action of the joint reinforcing material and the sealing ribbon tape, and the pipe lining material Burst is prevented. Also, since the thickness of the joint portion of the resin adsorbent is increased by the joint reinforcing material and the sealing ribbon tape, the decrease in thickness due to the extension of the joint portion becomes almost negligible, and therefore, after curing. The thickness of the pipe lining material does not partially decrease, and the pipe lining material has substantially uniform strength in the circumferential direction.

According to the fourth aspect of the present invention, since the sealing ribbon tape for reinforcing the joint of the resin adsorbent constituting the pipe lining material and the joint clearance ribbon tape are not bonded to each other, the sealing ribbon tape is As the joining span becomes longer, the decrease in thickness due to its elongation is further reduced, preventing bursting of the pipe lining material more reliably and reducing the local thickness of the cured pipe lining material. Is prevented.

According to the fifth to eleventh aspects of the present invention, the butted portions of the resin adsorbent constituting the pipe lining material are joined by sewing, and both surfaces of the joined portion are formed by the first and second joint reinforcing materials. Since the reinforcing member is reinforced, it is possible to prevent the occurrence of a burst and a local decrease in thickness as in the pipe lining material according to the first to fourth aspects.

According to the twelfth aspect of the present invention, the thickness t ₂ of the joint portion of the cured pipe lining material is changed to the thickness t _{1 of the} other portion.
T ₁ <t ₂ ≦ 1.3t ₁ , the thickness of the joint portion of the cured pipe lining material does not become thin locally, and the pipe becomes thicker than necessary. It does not obstruct the flow of fluid in the road. In addition, when the pipe lining material obtained by the manufacturing method according to claims 1 to 11 is used in the method of the present invention, the burst of the pipe lining material during the lining work is prevented, and the required lining work is stably and reliably performed. Can be done.

[0024]

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

<First Embodiment> FIGS. 1 to 5 are partial perspective views showing a method of manufacturing a pipe lining material according to a first embodiment of the present invention in the order of steps.

In the manufacturing method according to the present embodiment,
As shown in FIG. 1, a sheet-like resin adsorbent 1 having a surface coated with a highly airtight plastic film 2
, The ends thereof are overlapped with each other, and the joint reinforcing material 3 folded in a U-shape is sandwiched between the overlapped portions as shown in FIG. The overlapped portion is sewn with the thread 4 together with the joint reinforcing material 3 and joined. Then, when the joining portion of the resin adsorbent 1 is pulled right and left, the ends of the joining portion are butted as shown in FIG. 4, and the inside of the butted portion is reinforced by the joining portion reinforcing material 3. Thereafter, as shown in FIG. 4, a sealing ribbon tape 5 of the same material as that of the plastic film 2 is welded to the outer surface of the joining portion of the resin adsorbent 1 formed into a tubular shape (the surface opposite to the joining portion reinforcing material 3). For example, a tubular resin adsorbent 1 is obtained, and the tubular resin adsorbent 1 is impregnated with a curable resin by an arbitrary method to produce a tube lining material 10 shown in FIG.

Here, the resin adsorbent 1 is made of polyester, nylon, acrylic, polypropylene, carbon, glass, or a nonwoven fabric obtained by bonding or punching a mixture thereof, and the joining portion reinforcing material 3
Is made of the same material as the resin adsorbent 1.

The plastic film 2 and the sealing ribbon tape 5 are made of the same material, and are made of a film of polyurethane, polyvinyl chloride, vinylidene, polyethylene, EVA, nylon or the like.

Further, as the curable resin impregnated in the tubular resin adsorbent 1, a thermosetting resin such as an unsaturated polyester resin or an epoxy resin is selected.

The pipe lining material 10 manufactured through the above-described steps is used for lining an aged pipe. Next, the pipe lining material 10 according to the present invention constructed using the pipe lining material 10 is used. Such a pipe lining method will be described with reference to FIGS. 6 and 7 are sectional views showing the pipe lining method according to the present invention in the order of steps, and FIG.
FIG. 4 is a cross-sectional view taken along a line A.

In the pipe lining method according to the present invention, as shown in FIG. 6, the pipe lining material 10 is invertedly inserted into the pipe line 20 by fluid pressure such as air pressure.

Here, the butted portions of the resin adsorbent 1 constituting the pipe lining material 10 obtained by the manufacturing method according to the present invention are joined by sewing, and both surfaces of the joined portion are joined to the joint reinforcing material 3 and the sealing ribbon. Since the tape 5 is reinforced, even if a strong circumferential tensile force acts on the pipe lining material 10, the extension of the sewn portion of the resin adsorbent 1 is reduced by the reinforcing effect of the joint reinforcing material 3 and the sealing ribbon tape 5. Can be suppressed. As a result, the burst of the pipe lining material 10 is prevented, and the inverted insertion of the pipe lining material 10 into the pipe line 20 is stably and reliably performed.

Then, as shown in FIG. 7, when the inverted insertion of the pipe lining material 10 is completed over the entire length of the pipe line 20, the plastic film 2 covering the outer surface of the tubular resin adsorbent 1 before the inversion is removed. The inner surface of the tubular resin adsorbent 1 after the reversal will be covered. As shown in FIG. 8, the joint of the tubular resin adsorbent 1 is reinforced by the sealing ribbon tape 5 on the inner surface and the outer surface is reinforced by the joint reinforcing material 3. Is done.

The pipe lining material 10 is pressed against the inner peripheral wall of the pipe 20 by applying a fluid pressure to the pipe lining material 10 as shown in FIG.
If the curable resin impregnated into the pipe is hardened by any means, the inner peripheral surface of the pipe 20 is hardened by the hardened pipe lining material 1.
It is lined with 0 and repaired.

Since the thickness of the joining portion of the resin adsorbent 1 constituting the pipe lining material 10 is increased by the joining portion reinforcing material 3 and the sealing ribbon tape 5, the thickness of the joining portion is not reduced due to the extension of the joining portion. Almost negligibly small,
Therefore, the thickness of the hardened pipe lining material 10 does not partially decrease, and the pipe lining material 10 has substantially uniform strength in the circumferential direction. In particular, in the present embodiment, as shown in FIG.
0, the thickness t ₂ of the joint is t with respect to the thickness t ₁ of the other portions.
It is set so that ₁ <t ₂ ≦ 1.3t ₁ . For this reason, the thickness of the joint portion of the pipe lining material 10 after hardening does not partly become thin, and the flow of the fluid in the pipe line 20 is not obstructed because it becomes too thick.

As shown in FIG. 9, the pipe lining material 1
In the manufacturing process of No. 0, a joint clearance ribbon tape 6 forming a two-layer structure with the non-weldable reinforcing material layer 6a and the plastic film layer 6b is interposed between the plastic film 2 and the sealing ribbon tape 5, and the joint clearance is provided. If the configuration in which the plastic film layer 6b of the ribbon tape 6 is welded to the plastic film 2 is adopted, the sealing ribbon tape 5 and the joint clearance ribbon tape 6 are not bonded to each other. As a result, the decrease in thickness due to the elongation is further reduced, and the occurrence of burst of the pipe lining material 10 is more reliably prevented.
A local thickness reduction of zero is prevented.

Second Embodiment Next, a method for manufacturing a pipe lining material according to a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on.

FIGS. 10 to 15 are explanatory views showing a method of manufacturing a pipe lining material according to Embodiment 2 of the present invention in the order of steps.

In the manufacturing method according to the present embodiment,
As shown in FIG. 11, a sheet-like resin adsorbent material 1 shown in FIG. 10 is rolled into a tube and the ends thereof are overlapped with each other, and a U-shaped first joint reinforcing material is provided between the overlapped portions. 12, the overlapping portion of the resin adsorbent 1 is sewn together with the first joint reinforcing material 3 with a thread 4 and joined as shown in FIG. Then, when the joining portion of the resin adsorbent 1 is pulled right and left, the end portions abut each other as shown in FIG. 13, and the inside of the abutting portion is reinforced by the first joining portion reinforcing member 3. In the present embodiment, the resin adsorbent 1 and the first joint reinforcing material 3 are made of the same nonwoven fabric as in the first embodiment.

Thereafter, as shown in FIG. 13, a second joint reinforcing material 7 is bonded to the outer surface (the surface opposite to the first joint reinforcing material 3) of the resin adsorbent 1 formed in a tubular shape. Alternatively, the tubular resin adsorbent 1 is formed by welding. The second joint reinforcing member 7 is formed of a nonwoven fabric of the same material as the first joint reinforcing member 3.

Here, the bonding of the second bonding portion reinforcing material 7 to the bonding portion of the resin adsorbent 1 is performed by a polyamide hot melt adhesive. The welding of the second joint reinforcing material 7 to the resin adsorbent 1 is performed by melting both joints with a burner.
In order to prevent the sewing thread 4 used for sewing at the joint of the above from being melted by heat, the sewing thread 4 is made of an inorganic fiber made of glass, carbon, ceramic, metal, asbestos or metal alumina, or 300 mm.
A yarn composed of heat-resistant fibers made of Kevlar or aromatic polyamide having a melting point of not less than ° C is used.

Thus, when the tubular resin adsorbent 1 is obtained as described above, the tubular resin adsorbent 1 is passed through the plastic tube 8 as shown in FIG. The liner 9 is passed through the tubular resin adsorbent 1, the inliner 9 and the tubular resin adsorbent 1 are expanded by fluid pressure, and the plastic tube 8 is heated while the tubular resin adsorbent 1 is evacuated by the vacuum pump 11. Then, this is welded to the outer surface of the tubular resin adsorbent 1.

Then, the outer surface of the tubular resin adsorbent 1 is covered with the plastic tube 8, and if this tubular resin adsorbent 1 is impregnated with a curable resin by any method, the pipe lining material 10 'shown in FIG. Is obtained.
In the present embodiment, the plastic tube 8
Is a seamless tube having a three-layer, five-layer structure including a high melting point plastic made of nylon (polyamide), polyester or ethylene vinyl alcohol.

In the pipe lining material 10 'obtained by the manufacturing method according to the present embodiment, the butted portions of the resin adsorbent 1 constituting the tube lining material are joined by sewing, and the inner and outer surfaces of the joined portion are joined. Are reinforced by the first and second joint reinforcing members 3 and 7, respectively, so that the occurrence of bursts and a local decrease in thickness are prevented, similarly to the pipe lining material 10 of the first embodiment.

Further, the pipe lining method can be carried out in the same manner as described above using the pipe lining material 10 'obtained by the manufacturing method according to the present embodiment, and the same effect as described above can be obtained by this method. .

[0046]

As is apparent from the above description, claim 1
According to the inventions described in (1) to (3), the butting portions of the resin adsorbent constituting the pipe lining material are joined by sewing, and both surfaces of the joining portion are reinforced by the joining portion reinforcing material and the sealing ribbon tape. Even if a strong circumferential tensile force acts on the sewn portion of the resin adsorbent, the extension of the sewn portion of the resin adsorbent is suppressed to a small level by the reinforcing effect of the joint reinforcing material and the sealing ribbon tape, thereby preventing the burst of the pipe lining material. Also, since the thickness of the joint portion of the resin adsorbent is increased by the joint reinforcing material and the sealing ribbon tape, the decrease in thickness due to the extension of the joint portion becomes almost negligible, and therefore, after curing. The thickness of the pipe lining material does not partially decrease, and the pipe lining material has substantially uniform strength in the circumferential direction.

According to the fourth aspect of the present invention, since the sealing ribbon tape for reinforcing the joint portion of the resin adsorbent constituting the pipe lining material and the joining portion clearance ribbon tape are not bonded to each other, the sealing ribbon tape is As the joining span becomes longer, the decrease in thickness due to its elongation is further reduced, preventing bursting of the pipe lining material more reliably and reducing the local thickness of the cured pipe lining material. Is prevented.

According to the fifth to eleventh aspects of the present invention, the butted portions of the resin adsorbent constituting the pipe lining material are joined by sewing, and both surfaces of the joined portion are formed by the first and second joint reinforcing materials. Since the reinforcing member is reinforced, it is possible to prevent the occurrence of a burst and a local decrease in thickness as in the pipe lining material according to the first to fourth aspects.

According to the twelfth aspect of the present invention, the thickness t ₂ of the joint portion of the cured pipe lining material is changed to the thickness t _{1 of the} other portion.
T ₁ <t ₂ ≦ 1.3t ₁ , the thickness of the joint portion of the cured pipe lining material does not become thin locally, and the pipe becomes thicker than necessary. It does not obstruct the flow of fluid in the road. In addition, when the pipe lining material obtained by the manufacturing method according to claims 1 to 11 is used in the method of the present invention, the burst of the pipe lining material during the lining work is prevented, and the required lining work is stably and reliably performed. Can be done.

[Brief description of the drawings]

FIG. 1 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 1 of the present invention.

FIG. 2 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 1 of the present invention.

FIG. 3 is a partial perspective view showing the method for manufacturing the pipe lining material according to Embodiment 1 of the present invention.

FIG. 4 is a partial perspective view showing the method for manufacturing the pipe lining material according to Embodiment 1 of the present invention.

FIG. 5 is a partial perspective view of the pipe lining material obtained by the method for manufacturing a pipe lining material according to Embodiment 1 of the present invention.

FIG. 6 is a sectional view showing a pipe lining method according to the present invention.

FIG. 7 is a sectional view showing a pipe lining method according to the present invention.

FIG. 8 is a sectional view taken along line AA of FIG. 7;

FIG. 9 is a partial cross-sectional view showing a configuration of a joint portion of the pipe lining material obtained by the manufacturing method according to the first embodiment of the present invention.

FIG. 10 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 11 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 12 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 13 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 14 is a partial perspective view illustrating a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 15 is a partial perspective view of a pipe lining material obtained by a method for manufacturing a pipe lining material according to Embodiment 2 of the present invention.

FIG. 16 is a cross-sectional view of a joint of a pipe lining material obtained by a conventional manufacturing method.

FIG. 17 is a cross-sectional view of a joint portion of a pipe lining material obtained by a conventional manufacturing method.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 resin adsorbent 2 plastic film 3 (first) joint reinforcing material 4 sewing thread 5 sealing ribbon tape 6 joint clearance ribbon tape 6 a non-weldable reinforcing material layer 6 b plastic film layer 7 second joint reinforcing material 8 plastic Tube 9 inliner 10,10 'tube lining material 11 vacuum pump

Continued on the front page (51) Int.Cl. ⁶ Identification symbol FI // B29K 101: 10 105: 08 B29L 9:00 23:00 (72) Inventor Takao Kamiyama 31-27 Daikancho, Hiratsuka-shi, Kanagawa Inside Shonan Synthetic Resins Manufacturing Co., Ltd. (72) Inventor Hiroyuki Aoki 1-194 Hayashi, Tokorozawa-shi, Saitama

Claims (12)

[Claims] 1. A method for producing a tube lining material comprising impregnating a curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film, wherein the surface is coated with a highly airtight plastic film. The sheet-shaped resin adsorbent is rolled into a tube, the ends of which are overlapped with each other, and a joint reinforcing material folded into a U-shape is sandwiched between the overlapped portions, and the overlapped portion of the resin adsorbent is formed. After sewing and joining together with the joint reinforcing material, a sealing ribbon tape is welded to a surface of the joint opposite to the joint reinforcing material to obtain the tubular resin adsorbent material. Production method. 2. The method for manufacturing a pipe lining material according to claim 1, wherein said joint reinforcing material is made of a nonwoven fabric. 3. The method according to claim 1, wherein the sealing ribbon tape is made of the same material as the plastic film. 4. A joint clearance ribbon tape having a two-layer structure comprising a non-weldable reinforcing material layer and a plastic film layer is interposed between the plastic film and the sealing ribbon tape. 2. The method according to claim 1, wherein the film layer is welded to the plastic film. 5. A method for producing a tube lining material comprising impregnating a curable resin into a tubular resin adsorbent whose outer surface is covered with a highly airtight plastic film, wherein the sheet-like resin adsorbent is rolled into a tube. The ends are overlapped with each other, and the first joint reinforcing material folded in a U-shape is sandwiched between the overlapped portions, and the overlapped portion of the resin adsorbent is sewn together with the first joint reinforcing material. And then joining or welding a second joint reinforcing material to a surface of the joint opposite to the first joint reinforcing material to obtain the tubular resin adsorbent. Manufacturing method of lining material. 6. The tubular resin adsorbent is passed through a plastic tube, and a highly air-tight inliner is passed through the tubular resin adsorbent to expand the inliner and the tubular resin adsorbent by fluid pressure. The method for producing a pipe lining material according to claim 5, wherein the plastic tube is heated while the tubular resin adsorbent is evacuated, and the plastic tube is brought into close contact with the outer surface of the tubular resin adsorbent. 7. The method for manufacturing a pipe lining material according to claim 5, wherein said first and second joint reinforcing materials are made of a nonwoven fabric. 8. The plastic tube according to claim 5, wherein said plastic tube is a seamless tube having a three-layered five-layer structure including a high melting point plastic made of nylon (polyamide), polyester or ethylene vinyl alcohol. Manufacturing method of pipe lining material. 9. The method for manufacturing a pipe lining material according to claim 5, wherein the second joint reinforcing material is bonded to the resin adsorbent with a polyamide hot melt adhesive. 10. The method according to claim 5, wherein a joint between the second joint reinforcing material and the resin adsorbent is melted by a burner, and the second joint reinforcing material is welded to the resin adsorbent. Of manufacturing pipe lining material. 11. A sewing thread for sewing the overlapped portion of the resin adsorbent, an inorganic fiber made of glass, carbon, ceramic, metal, asbestos or metal alumina, Kevlar or aromatic having a melting point of 300 ° C. or more. The method for manufacturing a pipe lining material according to claim 10, wherein the pipe lining material is made of heat-resistant fiber made of polyamide. 12. A pipe lining material obtained by impregnating a curable resin into a tubular resin adsorbent material whose outer surface is covered with a highly airtight plastic film, is reversely inserted into a pipe by fluid pressure, and the pipe lining material is provided. While pressing the inner wall of the pipe by fluid pressure while hardening the curable resin impregnated in the pipe lining material, the inner peripheral surface of the pipe is lined with the hardened pipe lining material. pipe lining method, wherein a thickness t ₂ of the joint portion is set to be t ₁ <t ₂ ≦ 1.3 t ₁ with respect to the thickness t ₁ of the other portion of the tubular lining material after.