Belt-shaped member for rehabilitating pipe line, and apparatus and method for manufacturing the same

Abstract

To facilitate the molding of a reinforcing strip material in a strip member for regenerating a pipeline to facilitate the production of the strip member and to enhance the integration of a strip main body and the reinforcing strip material.SOLUTION: A belt-like member 10 for rehabilitating a pipeline includes a belt body 11 made of synthetic resin including a flat main belt part 12, and a reinforcing belt material 20 made of metal. The reinforcing band material 20 includes a hollow body part 21 projected from the main band part 12 to the outer peripheral side and opened to the inner peripheral side, and a fixing part 22 continued to an end part on the inner peripheral side in the hollow body part 21 and embedded in the main band part 12. The band body 11 integrally has a coating layer 51 projecting from the main band part 12 to the outer peripheral side and covering the surface of the hollow body part 21.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a strip-shaped member for pipeline rehabilitation, which serves as a rehabilitation pipe that is lined on the inner periphery of an existing pipe such as an aging sewer pipe, as well as a manufacturing apparatus and method for the same, and in particular to a strip-shaped member in which a strip body made of synthetic resin is reinforced with a reinforcing strip material such as steel. [Background technology]

[0002] It is known that in order to rehabilitate existing pipes such as aged sewer pipes, the inner periphery of the pipe is lined with a rehabilitation pipe. A known rehabilitation pipe has a spiral pipe structure in which a belt-shaped pipe for pipe rehabilitation is wound in a spiral shape (see Patent Document 1, etc.).

[0003] The belt-shaped member for pipe rehabilitation in Patent Document 1 includes a belt body made of synthetic resin and a reinforcing belt material that reinforces the belt body. A pair of pipe-making joints with complementary concave-convex cross sections are provided on both edges of the belt body in the belt width direction. The helically wound belt-shaped member is manufactured into a helical rehabilitation pipe by fitting together the joints facing each other at different turns. A reinforcing belt material separate from the belt body is provided on the outer periphery of the belt body of the belt-shaped member. The reinforcing belt material includes a steel reinforcing belt body and a coating layer. The reinforcing belt body includes a hollow body with a C-shaped cross section that has a top plate and a pair of side plates and protrudes from the belt body toward the outer periphery, and a pair of arm plates that extend on both sides in the belt width direction from the pair of side plates and bend obliquely toward the outer periphery, forming a roughly Ω-shaped cross section. The pair of arm plates are fastened to fastening portions of the strap body, and the reinforcing strap material is fitted to the outer periphery of the strap body. The entire surface of the reinforcing strap body is covered with a coating layer made of polyethylene resin. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2022-034908 Summary of the Invention [Problem to be solved by the invention]

[0005] In manufacturing the belt-shaped member for pipe rehabilitation in Patent Document 1, the belt body and the reinforcing belt are formed separately, and then the belt body and the reinforcing belt are fitted together. The reinforcing belt is typically formed by coating the entire surface of a steel plate that will become the reinforcing belt body with a coating layer before being formed, and then bending the plate by roll forming. Therefore, the longitudinal end faces of the belt body are not resin-coated. Furthermore, roll forming of a resin-coated steel plate can result in poor forming accuracy and increased forming loads due to the rolls digging into the resin. Furthermore, there is a risk that the reinforcing belt may come off the belt body during rehabilitation work, etc. In view of the above circumstances, the present invention aims to facilitate the molding of reinforcing band material in band-shaped members for pipeline rehabilitation, thereby facilitating the manufacture of the band-shaped members, and improving the integrity of the band body and the reinforcing band material. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides a belt-shaped member for pipeline rehabilitation that serves as a rehabilitation pipe that is lined on the inner periphery of an existing pipe, a band body made of synthetic resin including a flat main band portion and pipe-making joint portions formed on both edges of the main band portion in the band width direction; a reinforcing band material made of metal that reinforces the band body; the reinforcing band material includes a hollow barrel portion that protrudes from the main band portion toward the outer periphery and opens toward the inner periphery, the opening toward the inner periphery being closed by the main band portion, and an anchoring portion that is continuous with the inner periphery end of the hollow barrel portion and is embedded in the main band portion, The band body is characterized in that it integrally has a coating layer that protrudes from the main band portion toward the outer periphery and covers the surface of the hollow barrel portion.

[0007] According to this belt-shaped member, the metal reinforcing strip can be molded without a coating layer, and then sent to the band body extrusion molding process. This facilitates molding of the reinforcing strip, which in turn facilitates manufacturing of the belt-shaped member. Furthermore, by covering the reinforcing strip with a coating layer that is integral with the band body and embedding the anchoring portion of the reinforcing strip inside the band body, the integrity of the band body and the reinforcing strip can be enhanced, preventing the reinforcing strip from coming off the band body. The anchoring portion is covered by the main band portion, which prevents the risk of corrosion.

[0008] Preferably, the coating layer is provided on an outer surface of the hollow barrel portion, The inner surface of the hollow barrel directly faces the hollow space defined by the hollow barrel and the main band. This eliminates the need to form a coating layer on the inner surface of the hollow barrel portion, making it possible to easily form the band body including the coating layer.

[0009] Preferably, the fixing portion has a pair of arm plate portions extending outward in the band width direction from both ends of the hollow body portion in the band width direction, and each arm plate portion is embedded in the middle portion in the thickness direction of the main band portion. This further enhances the unity of the strap body and the reinforcing strap material. Since the entire surface of the arm plate is covered by the main strap, the risk of corrosion of the arm plate can be avoided.

[0010] The present invention also provides an apparatus for manufacturing a belt-shaped member for pipe rehabilitation, which includes a belt body made of synthetic resin and a reinforcing belt material made of metal, and the apparatus comprises: a forming section for forming the reinforcing strip from a flat metal strip; an extrusion molding section having an introduction section into which the reinforcing strip material is introduced, extruding the strip body from a synthetic resin raw material and integrally forming the reinforcing strip material and the strip body; the molding section molds, as elements of the reinforcing strip material, a hollow barrel section that protrudes to the outer circumferential side and opens to the inner circumferential side, and a fixing section that is continuous with an end section on the inner circumferential side of the hollow barrel section, The extrusion molding portion is characterized in that, as elements of the band body, it integrally molds a flat main band portion that closes the opening of the hollow barrel portion toward the inner periphery and in which the fixing portion is embedded, and a coating layer that protrudes from the main band portion toward the outer periphery and covers the surface of the hollow barrel portion. This manufacturing device allows the metal reinforcing strip to be molded without a coating layer, facilitating the molding of the reinforcing member. Furthermore, the strip body and the reinforcing member can be integrated during extrusion molding of the strip body. The hollow barrel is provided as part of the molding die for the coating layer, simplifying the device structure.

[0011] The method of the present invention is a method for manufacturing a belt-shaped member for pipeline rehabilitation, which includes a belt body made of synthetic resin and a reinforcing belt material made of metal, and includes the steps of: forming the reinforcing strip from a flat metal strip by a forming machine; introducing the reinforcing strip into an extrusion; a step of extruding the band body from a synthetic resin raw material by the extrusion molding unit and integrally forming the reinforcing band material and the band body; In the forming step of the reinforcing strip, a forming unit forms, as elements of the reinforcing strip, a hollow barrel portion that protrudes toward the outer periphery and opens toward the inner periphery, and a fixing portion that is continuous with an end portion of the hollow barrel portion on the inner periphery side, The extrusion molding process is characterized in that the extrusion molding section integrally molds, as elements of the band body, a flat main band section that closes the opening of the hollow barrel section to the inner periphery and in which the fixing section is embedded, and a coating layer that protrudes from the main band section to the outer periphery and covers the surface of the hollow barrel section. [Effects of the Invention]

[0012] According to the present invention, it is possible to facilitate the formation of the reinforcing band in a band-shaped member for pipe rehabilitation, thereby facilitating the manufacture of the band-shaped member, and also to improve the integrity of the band body and the reinforcing band. [Brief explanation of the drawings]

[0013] [Figure 1]FIG. 1 is a cross-sectional view of a belt-shaped member for pipe rehabilitation according to one embodiment of the present invention. [Figure 2] Fig. 2(a) is a side cross-sectional view of an existing pipe that has been rehabilitated using a rehabilitating pipe made of the strip-shaped member, and Fig. 2(b) is an enlarged cross-sectional view of the circled portion IIb in Fig. 2(a). [Figure 3] FIG. 3 is a front view of the belt-shaped member manufacturing apparatus. [Figure 4] FIG. 4 is a side view showing the extrusion molding section of the manufacturing apparatus, taken along line IV-IV in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 shows an example of a belt-shaped member 10 for pipe rehabilitation according to the present invention. As shown in Fig. 2, the belt-shaped member 10 is used to rehabilitate an existing pipe 1, such as an aged sewer pipe. The existing pipe 1 to be rehabilitated is not limited to a sewer pipe, but may also be a water supply pipe, an agricultural water pipe, a hydroelectric power generation water pipe, a gas pipe, or any other existing buried pipe, or may even be a tunnel.

[0015] As shown in Figure 2(a), a pipe rehabilitation strip 10 is wound spirally around the inner periphery of an existing pipe 1 to form a spiral rehabilitation pipe 3. The rehabilitation pipe 3 is lined around the inner periphery of the existing pipe 1, thereby rehabilitating the existing pipe 1. Preferably, the rehabilitation pipe 3 is a self-supporting pipe that alone provides the required strength, and no backfill material such as mortar is filled between the inner periphery of the existing pipe 1 and the outer periphery of the rehabilitation pipe 3 to integrate the existing pipe 1 and the rehabilitation pipe 3 in terms of strength.

[0016] As shown in FIG. 1, a belt-shaped member 10 for pipe rehabilitation has a constant cross section and extends elongatedly in a direction perpendicular to the plane of the paper in FIG. 1. The belt-shaped member 10 comprises a belt main body 11 and a reinforcing belt material 20. The belt main body 11 is made of a synthetic resin such as polyvinyl chloride, polyethylene, or polypropylene. The belt main body 11 has a main belt portion 12, joint portions 13 and 14 for pipe manufacturing, and a coating layer 15. The main belt portion 12 is formed in a flat belt shape. Joint portions 13 and 14 are provided on both edges of the main belt portion 12 in the belt width direction (left and right direction in FIG. 1). These joint portions 13 and 14 are formed with uneven cross-sectional shapes that are complementary to each other.

[0017] As shown in FIG. 2(b), in the rehabilitating pipe 3 made of a spiral pipe, the joints 13 and 14 that face each other on different circumferences of the spirally wound strip-shaped member 10 are fitted together in a concave-convex manner.

[0018] As shown in Figure 1, the band body 11 is reinforced by a reinforcing band material 20. The reinforcing band material 20 is made of a metal such as steel or iron. The reinforcing member 20 ensures that the rehabilitating pipe 3 has the required strength as a self-supporting pipe.

[0019] The reinforcing strip 20 includes a hollow barrel portion 21 and an anchoring portion 22. The hollow barrel portion 21 protrudes from the main strip portion 12 toward the outer periphery (upper side in FIG. 1) and opens toward the inner periphery (lower side in FIG. 1). Specifically, the hollow barrel portion 21 includes a pair of side plate portions 23 and a top plate portion 24 facing each other in the strip width direction (left-right direction in FIG. 1), and is formed with a C-shaped cross section. Each side plate portion 23 rises from the main strip portion 12 toward the outer periphery. The top plate portion 24 spans between the outer periphery-side ends (upper ends in FIG. 1) of these side plate portions 23. The side plate portions 23 and the top plate portion 24 are connected at approximately right angles. An opening 25 toward the inner periphery of the hollow barrel portion 21 is formed between the inner periphery-side ends (lower ends in FIG. 1) of the pair of side plate portions 23.

[0020] The hollow body 21 protrudes from the central portion 12c in the band width direction of the main band portion 12 toward the outer periphery (upward in FIG. 1). The central portion 12c of the main band portion 12 and the top plate portion 24 face each other in parallel. A hollow portion 10c with a rectangular cross section is defined between the central portion 12c of the main band portion 12 and the hollow body 21. An opening 25 toward the inner periphery of the hollow body 21, and therefore the hollow portion 10c, is closed by the central portion 12c of the main band portion 12.

[0021] The outer surface 23a of each side plate portion 23 and the outer peripheral side surface 24a of the top plate portion 24 form the outer surface 21a of the hollow barrel portion 21. A coating layer 15 is provided on the outer surface 21a. The coating layer 15 is formed with a C-shaped cross section that follows the hollow barrel portion 21, protrudes from the main band portion 12 toward the outer periphery, and covers the entire outer surface 21a of the hollow barrel portion 21. The inner peripheral end of the coating layer 15 (the lower end in Figure 1) is integrally connected to the main band portion 12. The coating layer 15 is made of the same synthetic resin as the band body 11. In other words, the band body 11 has the coating layer 15 integrally therewith. An outer circumferential groove 16 is formed between the joints 13, 14 and the portions of the covering layer 15 that cover the outer surfaces 23a of the side plate portions 23.

[0022] The opposing surfaces 23b of the pair of side plate portions 23 and the inner peripheral side surface 24b of the top plate portion 24 form the inner surface 21b of the hollow body portion 21. The inner surface 21b is exposed without being covered by a coating layer and directly faces the hollow portion 10c.

[0023] Anchoring portions 22 are connected to the inner peripheral ends (lower ends in FIG. 1) of both ends of the hollow body portion 21 in the band width direction. The anchoring portions 22 are fixed to the band body 11 by being embedded in the main band portion 12. More specifically, the anchoring portion 22 has a pair of flat, plate-shaped arm plate portions 22a, 22b. The arm plate portions 22a, 22b extend outward in the band width direction from the inner peripheral ends (lower ends in FIG. 1) of the corresponding side plate portions 23. The side plate portions 23 and the arm plate portions 22a, 22b are connected at approximately right angles. Each arm plate portion 22a, 22b is embedded in the middle of the thickness direction of both side portions 12a, 12b of the main band portion 12 in the band width direction. As a result, each side portion 12a, 12b of the main band portion 12 is divided into an inner peripheral portion 12d and an outer peripheral portion 12e, with the arm plate portions 22a, 22b in between. The apparent thickness of each side portion 12a, 12b of the main band portion 12 is greater than the thickness of the central portion 12c of the main band portion 12.

[0024] The thickness of the main band portion 12 and the coating layer 15 of the band body 11 (for both side portions 12a, 12b, not the apparent thickness but the actual thickness of each of the inner peripheral portion 12d and the outer peripheral portion 12e) is preferably about 1 mm to 4 mm, and more preferably about 2.5 mm to 3.5 mm. If the thickness is too small, the resin may be scraped off by contact with the drive roller of a pipe-making machine (not shown) during rehabilitation work (see Patent Document 1), exposing the reinforcing band material 20 and causing corrosion of the metal such as steel that constitutes the reinforcing band material 20. If the thickness is too large, it is not easy to mold the band body 11 from resin.

[0025] 3 shows a manufacturing apparatus 30 that manufactures the strip-shaped member 10. The manufacturing apparatus 30 includes a payout machine 31, a welding machine 32, a forming section 33, an extrusion section 34, a cooling section 35, a take-up machine 36, a cutting machine 37, and a winding machine 38. These manufacturing apparatus components 31, 32, 33, 34, 35, 36, 37, and 38 are arranged in this order along a feed direction a that runs from right to left in FIG.

[0026] A flat steel strip 29 (flat metal strip) to be used as the reinforcing strip 20 is wound around the payout machine 31. The welding machine 32 is used to join the flat steel strip 29 . In the forming section 33, a plurality of roll forming sections 33a are provided in series along the feed direction a. The extrusion molding section 34 includes a supply section 34a for the resin raw material s of the band main body 11, an introduction section 34b for the reinforcing band material 20, a heating and extruding section 34c, and a molding die 34d. The introduction section 34b faces the outlet section 33b of the molding section 33 in the feed direction a.

[0027] As shown in Fig. 4, the forming die 34d includes an outer peripheral die 40 having a die surface 40a that matches the outer peripheral shape of the band body 11 (Fig. 1), and a core die 41 housed inside the outer peripheral die 40. A reinforcing band material 20 is passed between the outer peripheral die 40 and the core die 41. The reinforcing band material 20 covers three surfaces of the core die 41 except for the bottom surface. The bottom surface of the core die 41 serves as the die surface 41a on the surface of the central portion 12c of the main band part 12 (Fig. 1) facing the hollow portion 10c.

[0028] The cooling section 35 includes a water tank 35a for cooling and sizing the strip-shaped member 10 after molding. The take-up machine 36 includes a take-up conveyor 36 a that takes up the strip-shaped member 10 . The cutter 37 is used to cut the strip-shaped member 10 when the winding amount on the winder 38 reaches a full capacity. The winding machine 38 includes a winding drum 38a.

[0029] The belt-shaped member 10 is manufactured by the manufacturing apparatus 30 as follows. A flat steel strip 29 is fed from a feeder 31 . The flat steel strip 29 is fed in the feed direction a through a welding machine 32 to the forming section 33. In the forming section 33, the reinforcing strip material 20 is roll-formed from the flat steel strip 29 by a multi-stage roll forming section 33a. Since the flat steel strip 29 is not coated with a coating layer, good forming accuracy can be achieved. In addition, the rolls of the roll forming section 33a do not bite into the resin, and the forming load can be reduced.

[0030] The formed reinforcing strip 20 is introduced into the introduction section 34b of the extrusion molding section 34 and sent to the molding die 34d. Furthermore, synthetic resin raw material s is supplied to supply section 34a, and is extruded into molding die 34d while being heated and melted in heating extrusion section 34c. In the molding die 34d, the band body 11 is extrusion-molded from the synthetic resin raw material s. Specifically, the outer surface shape of the band body 11 is formed by the mold surface 40a. The surface of the central portion 12c of the main band portion 12 facing the hollow portion 10c is formed by the mold surface 41a. Furthermore, in the molding die 34d, the synthetic resin raw material s is brought into close contact with the reinforcing band material 20, thereby integrally forming the reinforcing band material 20 and the band body 11. At this time, the fixing portion 22 of the reinforcing band material 20 is embedded in the band body 11. The coating layer 15 is formed so as to cover the outer surface 21a of the hollow body portion 21 of the reinforcing band material 20. In other words, the hollow body portion 21 of the reinforcing band material 20 is provided as part of the molding die for the coating layer 15.

[0031] There is no need to provide a coating layer on the inner surface 21b of the hollow barrel 21. Therefore, there is no need to provide a molding chamber between the inner surface 21b of the hollow barrel 21 and the core mold 41, and no supply path for the synthetic resin raw material to the molding chamber is required. This simplifies the configuration of the molding mold 34d and facilitates molding of the band body 11 including the coating layer 15. Furthermore, since the arm plate portions 22a, 22b of the fixing portion 22 are parallel to the main band portion 12 in the band width direction, the structure of the forming die 34d can be further simplified. In this manner, the strip-shaped member 10 is formed. The formed strip-shaped member 10 passes through a cooling section 35, a take-up machine 36, and a cutter 37 in this order, and is then wound up around a winding drum 38a of a winding machine 38.

[0032] According to the strip-shaped member 10, the reinforcing strip 20 is covered with the covering layer 15 that is integral with the strip body 11, and the fixing portion 22 of the reinforcing strip 20 is embedded and fixed in the strip body 11, thereby enhancing the unity of the strip body 11 and the reinforcing strip 20. Therefore, for example, during rehabilitation work on the existing pipe 1 (during pipe manufacturing of the rehabilitation pipe 3), the reinforcing strip 20 can be prevented from coming off the strip body 11. The reinforcing band 15 can increase the strength of the band-shaped member 10, thereby ensuring the required strength as a self-supporting pipe for the rehabilitation pipe 3. Even if the arm plate portions 22a, 22b of the reinforcing band 15 are shaped along the band width direction (not shaped to be warped obliquely toward the outer periphery (see Patent Document 1)), sufficient required strength can be obtained.

[0033] When producing a rehabilitated pipe 3 from a strip-shaped member 10 using a pipe producing device, the outer circumferential drive roller of the pipe producing device is inserted into the outer circumferential groove 16 of the strip-shaped member 10 and pressed against the outer circumferential side surfaces of both side portions 12a, 12b of the main band portion 12. Because the arm plate portions 22a, 22b are shaped to follow the strip width direction (and are not shaped to bend obliquely toward the outer circumferential side (see Patent Document 1 cited above)), the width (axial length) of the outer circumferential drive roller can be adjusted to match the groove width of the outer circumferential groove 16. Therefore, the pressing force of the outer circumferential drive roller can be distributed, preventing the resin that forms the outer circumferential side surfaces of both side portions 12a, 12b of the main band portion 12 from being scraped off.

[0034] Furthermore, the outer surface 21a of the hollow barrel 21 of the reinforcing strip 20 is covered by the coating layer 15, and the entire surfaces of the arm plate portions 22a, 22b are covered by the main band portion 12, thereby preventing corrosion of the reinforcing strip 20. The corrosion resistance of the reinforcing strip 20 can be ensured even in a mortar-less construction method (backfill-less construction method) in which mortar (backfill material) is not filled between the existing pipe 1 and the rehabilitating section 3. Although the inner surface 21b of the hollow barrel 21 is exposed within the hollow portion 10c, there is almost no sewage or groundwater flowing within the hollow portion 10c, so there is extremely little risk of the inner surface 21b of the hollow barrel 21 corroding.

[0035] The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the invention. For example, the inner surface 21b of the hollow barrel 21 may be covered with a coating layer, or the band body 11 may integrally have a coating layer that covers the inner surface 21b of the hollow barrel 21. The coating layer that covers the inner surface 21b may be thinner than the coating layer 15 that covers the outer surface 21a. The rehabilitating pipe is not limited to a spiral pipe. A plurality of strip-shaped members each extending toward the pipe axis of the rehabilitating pipe may be arranged in the circumferential direction of the pipe, with the opposing edges of adjacent strip-shaped members joined together. [Industrial Applicability]

[0036] The present invention can be applied to, for example, a technology for rehabilitating aged sewer pipes. [Explanation of symbols]

[0037] 1 Existing pipes 3 Rehabilitation pipe 10 Pipe rehabilitation strip 10c Hollow part 11 Obi body 12 Main belt part (belt body element) 13 First joint (joint, belt body element) 14 Second joint (joint, belt body element) 15 Covering layer (element of belt body) 20 Reinforcement strip 21 Hollow body (reinforcement strip element) 22 Anchorage (reinforcement strip element) 22a Arm plate part 22b Arm plate part 23 Side plate part 24 Top plate 25 Opening to the inner circumference 29 Flat steel strip (flat metal strip) 30 Manufacturing equipment 33 Molding processing department 34 Extrusion molding section 34d mold 40 Periphery mold 41 Core mold

Claims

1. A belt-shaped member for pipeline rehabilitation that becomes a rehabilitation pipe that is lined on the inner periphery of an existing pipe, a band body made of synthetic resin including a flat main band portion and pipe-making joint portions formed on both edges of the main band portion in the band width direction; a reinforcing band material made of metal that reinforces the band body; the reinforcing band material includes a hollow barrel portion that protrudes from the main band portion toward the outer periphery and opens toward the inner periphery, the opening toward the inner periphery being closed by the main band portion, and an anchoring portion that is continuous with the inner periphery end of the hollow barrel portion and is embedded in the main band portion, A band-shaped member characterized in that the band body has integrally therewith a coating layer that protrudes from the main band portion toward the outer periphery and covers the surface of the hollow body portion.

2. the coating layer is provided on an outer surface of the hollow barrel portion, 2. The belt-shaped member according to claim 1, wherein the inner surface of the hollow barrel directly faces the hollow portion defined by the hollow barrel and the main belt portion.

3. A belt-shaped member as described in claim 1, wherein the fixing portion has a pair of arm plate portions extending outward in the belt width direction from both ends of the hollow body portion in the belt width direction, and each arm plate portion is embedded in the middle portion of the main belt portion in the thickness direction.

4. An apparatus for manufacturing a belt-shaped member for pipe rehabilitation, the belt-shaped member including a belt body made of synthetic resin and a reinforcing belt material made of metal, a forming section for forming the reinforcing strip from a flat metal strip; an extrusion molding section having an introduction section into which the reinforcing strip material is introduced, extruding the strip body from a synthetic resin raw material and integrally forming the reinforcing strip material and the strip body; the molding section molds, as elements of the reinforcing strip material, a hollow barrel section that protrudes to the outer circumferential side and opens to the inner circumferential side, and a fixing section that is continuous with an end section on the inner circumferential side of the hollow barrel section, The extrusion molding unit integrally molds, as elements of the band body, a flat main band portion that closes the opening to the inner circumference of the hollow barrel portion and in which the fixing portion is embedded, and a coating layer that protrudes from the main band portion to the outer circumference and covers the surface of the hollow barrel portion.

5. A method for manufacturing a belt-shaped member for pipeline rehabilitation, comprising a belt body made of synthetic resin and a reinforcing belt material made of metal, forming the reinforcing strip from a flat metal strip by a forming machine; introducing the reinforcing strip into an extrusion; a step of extruding the band body from a synthetic resin raw material by the extrusion molding unit and integrally forming the reinforcing band material and the band body; In the forming step of the reinforcing strip, a forming unit forms, as elements of the reinforcing strip, a hollow barrel portion that protrudes toward the outer periphery and opens toward the inner periphery, and a fixing portion that is continuous with an end portion of the hollow barrel portion on the inner periphery side, A method for manufacturing a strip-shaped member, characterized in that in the extrusion molding process, the extrusion molding section integrally molds, as elements of the strip body, a flat main strip section that closes the opening to the inner circumference of the hollow barrel section and in which the fixing section is embedded, and a coating layer that protrudes from the main strip section to the outer circumference and covers the surface of the hollow barrel section.

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