Abstract: An apparatus is provided for everting a tubular pipe lining material for rehabilitating an existing pipe. The apparatus has a sealed storage container storing a rotary body around which the pipe lining material is wound in a roll. An electric motor undergoes rotation in a first rotational direction to rotate the rotary body to wind the pipe lining material on the rotary body and undergoes rotation in a second rotational direction opposite to the first rotational direction. An eversion nozzle is attached to the storage container for everting the pipe lining material. When fluid pressure is supplied into the storage container to pull the pipe lining material out from the storage container and evert it via the eversion nozzle, the electric motor is caused to rotate in the second rotational direction due to the pulling out of the pipe lining material and to function as an electric generator to brake the pullout of the pipe lining material.

Abstract: A lateral pipe lining material is comprised of a tubular resin absorbing material impregnated with a setting resin and has a flange formed on one end thereof. A peeling tube is mounted to an outer periphery of an area around the flange. A tubular peeling end, one end of which closed off, is mounted to an outer peripheral part of the other end of the tubular resin absorbing material. The other end of the peeling tube is mounted to a pressure bag, compressed air is fed into the pressure bag in a state in which the flange of the lateral pipe lining material is attached to a peripheral edge of an opening of a lateral pipe of a main pipe, and the lateral pipe lining material is everted and inserted into the lateral pipe from the main pipe side toward ground level via air pressure. The lateral pipe lining material is then heated while being pressed against an inner peripheral surface of the lateral pipe.

Abstract: There is provided a pipe lining method wherein a lateral pipe lining material and a main pipe lining material are securely joined. After a lateral pipe has been lined, a start liner is applied to the main pipe and a main pipe lining material is then inserted. A heating wire for melting the start liner is mounted on a surface of a flange of the lateral pipe lining material during or after lining of the lateral pipe. While the main pipe is being lined, the heating wire is heated to melt the start liner existing between the flange of the lateral pipe lining material and the main pipe lining material. When the resin in the main pipe lining material is cured, the main pipe lining material and flange of the lateral pipe lining material are integrated. This allows the lateral pipe lining material and main pipe lining material to be reliably joined.

Abstract: Integrally formed plastic segments comprising an inner surface plate constituting an inner peripheral surface and lateral plates vertically arranged on an edge part of the inner surface plate extending in a circumferential direction are coupled in a circumferential direction to assemble pipe units 10, 10?. The pipe units are coupled sequentially in the longitudinal direction of a pipe, and a rehabilitating pipe is laid down in an existing pipeline. When an existing pipe 21 is bent, the pipe units are coupled at a bending part 21b in the longitudinal direction of the pipe via coupling members so that central axes X1, X2 of the pipes are angled toward each other to create a bend. A gap formed between the pipe units at the bent part is covered by a cladding. Such a configuration enables a rehabilitating pipe to be watertight and resistant to external forces.

Abstract: When a pipeline 1 is to be repaired, a pressure medium is caused to act upon a pressure container to thereby turn a lining material 3 inside out for insertion into the pipeline 1 in an everted state. While the lining material 3 is pressed against an inner peripheral surface of the pipeline 1, vapor mist 20a from a vapor tube 16 and normal-temperature water from a coolant tube 30 are sprayed in order to mix the vapor mist and misted normal-temperature water. The vapor mist is substantially uniformly cooled through such mixing, and the cooled vapor mist is blown against an inner surface of the lining material 3. This enables a thermosetting resin impregnated in the lining material 3 to be heated and cured at an optimal temperature. The same effect can also be obtained by omitting the coolant tube 30 and spraying only the vapor mist or hot water mist.

Abstract: A rehabilitating pipe is assembled inside an existing pipe using segments to repair the existing pipe. A coupling member is inserted through a segment when it is coupled in the longitudinal direction to another segment coupled already, and the coupling member is joined to the coupling member of another segment already coupled. During joining the segment is clamped against another segment and both the segments are coupled in the longitudinal direction. Such steps are repeated to couple other segments to segments already coupled until the rehabilitating pipe is laid to a predetermined length.

Abstract: A segment (1) is an integrally formed plastic unit comprising an inner-surface plate constituting an inner circumferential surface and lateral plates and end plates that are vertically arranged on a rim of the inner-surface plate. The segments are linked in a circumferential direction and in a pipe length direction to construct the rehabilitating pipe. A pipe unit (10) is made from segments linked in the circumferential direction. A band (30) is attached for encircling the outer circumference of the pipe unit and restraining same. A fastening force is produced on the band by a metal fastener, and the pipe unit is restrained in a fastened state by the band. Therefore, the pipe unit does not readily deform due to external forces, and the strength of the rehabilitating pipe itself can be increased.

Abstract: A lateral pipe lining material comprises a tubular resin-absorbing material impregnated with a curable resin and a brim attached at one end thereof. The lining material is positioned so that the brim faces a peripheral edge of a lateral pipe opening of the main pipe. A ring-shaped gasket composed of an elastic material is attached to an upper surface of the brim, and a bonding resin is applied thereto. The gasket seals a gap between an inner peripheral surface of the main pipe and the brim. The lateral pipe lining material is evertedly inserted into the lateral pipe in a state in which the bonding resin applied to the brim is brought into contact with the inner peripheral surface of the main pipe. In such a configuration, ground water can be prevented from seeping into the bonding resin applied to the brim even if the ground water flows into the main pipe from a break of the lateral pipe.

Abstract: A segment for a rehabilitating pipe is coupled to another segment in the circumferential and longitudinal directions of a rehabilitating pipe to rehabilitate an existing pipe. The segment has on one coupling surface a protruding part and a recessed part continuous with the protruding part and on another coupling surface a recessed part and a protruding part whose shapes respectively conform to the protruding part and the recessed part of one coupling surface. The protruding part and the recessed part of one coupling surface of one segment is brought into tight surface contact with the recessed part and protruding part of another coupling surface of another segment and interfitted thereto when one and another segments are mutually coupled in the circumferential and longitudinal directions of the rehabilitating pipe.

Abstract: A pipe lining material for lining the main pipe of a sewer has a soft tubular resin absorption material impregnated with a liquid thermosetting resin, and also has a biodegradable film applied to the external peripheral surface of the pipe lining material. The pipe lining material is everted and inserted in the main pipe, pressed against the internal peripheral surface thereof, and cured to line the main pipe. After the lining is complete, there is no need to peel away and dispose of the biodegradable film because the film that is left behind is naturally decomposed and removed by microorganisms residing within the main pipe. This allows lining work to be simplified and carried out in a shorter period of time, reduces operation costs, and improves the lining finish.

Abstract: A lateral pipe lining material comprises a tubular resin absorbing material impregnated with a setting resin, which has a flange at one end thereof and whose outer surface is coated with a highly airtight film. A sealing tube is detachably attached to the outer circumferential surface of the tubular resin absorbing material. The lateral pipe lining material is introduced inside a main pipe and its flange is brought into tight contact with the lateral pipe opening. The lateral pipe lining material including the sealing tube is then everted and inserted by fluid pressure inside a lateral pipe toward the ground level. After the setting resin is cured, the sealing tube is removed from the lateral pipe lining material. This enables the lining of a lateral pipe to always be performed reliably, regardless of the aboveground circumstances.

Abstract: A tubular pipe lining material impregnated with a thermosetting resin is inserted into a pipeline and made to expand and press against an inner peripheral surface thereof. Hot water or steam is sprayed onto the pipe lining material to cure the thermosetting resin impregnated therein. Hot water that has accumulated in a bottom part of the pipe lining material is pumped out to an external location by a pump and cooled by a cooling device to generate cool water, which is then sprayed via a hose onto the cured pipe lining material to thereby cool the heated pipe lining material. This enables the thermally cured pipeline lining material to be reliably cooled and rendering a water truck unnecessary that is required at a construction site to supply additional cooling water.

Abstract: There is provided a pipe lining method wherein a lateral pipe lining material and a main pipe lining material are securely joined. After a lateral pipe has been lined, a start liner is applied to the main pipe and a main pipe lining material is then inserted. A heating wire for melting the start liner is mounted on a surface of a flange of the lateral pipe lining material during or after lining of the lateral pipe. While the main pipe is being lined, the heating wire is heated to melt the start liner existing between the flange of the lateral pipe lining material and the main pipe lining material. When the resin in the main pipe lining material is cured, the main pipe lining material and flange of the lateral pipe lining material are integrated. This allows the lateral pipe lining material and main pipe lining material to be reliably joined.

Abstract: An apparatus for everting and inserting a pipe-lining material to rehabilitate an underground pipeline comprises an everting nozzle that is disposed so that an opening thereof faces an opening of the pipeline. The pipe-lining material is brought un-everted up to the everting nozzle and attached to the nozzle opening thereof and fluid pressure is applied inside the pipe-lining material to evert and insert it in the pipe-extending direction of the pipeline to be rehabilitated. Eversion of the pipe-lining material is started at the location of the pipeline opening and the pipe-lining material remains flat without being everted in a curved portion where the travel direction of the pipe-lining material changes toward the pipeline opening. This allows no considerable friction to be generated at the curved portion and the pipe-lining material to be smoothly and reliably everted and inserted into the affected pipeline.

Abstract: A rehabilitating pipe is laid inside an existing pipe to rehabilitate the existing pipe. Support members are intergrally connected to an inner wall surface of the existing pipe so that loop portions of the respective support members extend from the inner wall surface of the existing pipe. The rehabilitating pipe is assembled inside of the existing pipe by mutually coupling segments of the rehabilitating pipe in a longitudinal direction of the existing pipe by inserting coupling members through connecting through-holes of the segments and through the loop portions of the respective support members to thereby support the assembled rehabilitating pipe so that the rehabilitating pipe remains inside of the existing pipe after assembly to rehabilitate the existing pipe.

Abstract: A segment for rehabilitating an existing pipe has an integral structure comprised of an inner plate having an inner circumferential surface that is planar or curved with a prescribed curvature, two side plates provided upright on each side edge of the inner plate, and two end plates provided upright on each end edge of the inner plate. At least one rehabilitating plate comprising a resin sheet covers one of an outer circumferential part of the segment facing the existing pipe and the inner circumferential surface of the inner plate.

Abstract: A boring device is provided with a boring blade that is inserted into a lateral pipe to bore a pipe lining material blocking the opening thereof. An air bag is provided and inflated to position the boring blade in the direction orthogonal to the longitudinal direction of the lateral pipe. With the boring blade properly positioned, a motor is operated to drive the boring blade so as to bore through the portion of the pipe lining material that blocks the opening of the lateral pipe. A weighting member is also used to urge the boring blade towards the pipe lining material to be bored through. Such an arrangement allows the boring blade to be positioned easily and correctly and prevents the boring blade from colliding with the internal peripheral surface of the lateral pipe.

Abstract: A method for lining an existing pipe uses a tubular lining material comprising a flexible resin absorber impregnated therein with a liquid setting resin. One end part of the lining material is radially spread to form cut pieces. The cut pieces of the lining material are laid on a flange comprising a flexible resin absorber impregnated with a liquid setting resin. The flange and the cut pieces of the lining material are brought into pressure contact with a surface surrounding a pipe opening of the existing pipe before a step of evertedly inserting the lining material into the existing pipe. The liquid setting resin in the flange and the cut pieces of the lining material is cured to adhesively fix the flange and the cut pieces of the lining material to the surface surrounding the pipe opening of the existing pipe.

Abstract: A pipe lining material for lining the main pipe of a sewer has a soft tubular resin absorption material impregnated with a liquid thermosetting resin, and also has a biodegradable film applied to the external peripheral surface of the pipe lining material. The pipe lining material is everted and inserted in the main pipe, pressed against the internal peripheral surface thereof, and cured to line the main pipe. After the lining is complete, there is no need to peel away and dispose of the biodegradable film because the film that is left behind is naturally decomposed and removed by microorganisms residing within the main pipe. This allows lining work to be simplified and carried out in a shorter period of time, reduces operation costs, and improves the lining finish.

Abstract: Segments are successively coupled in the circumferential direction and the vertical direction to provide a rehabilitating pipe that rehabilitates an exiting pipe such as a manhole extending in the vertical direction. The segments are coupled in the vertical direction by stacking segments on previously assembled segments. A gap between the existing pipe and the rehabilitating pipe is filled with a filler after completion of the assembly as a rehabilitating pipe. The filler is hardened to integrate the rehabilitating pipe with the existing pipe as a compound pipe. With such an arrangement, the rehabilitating pipe can be laid by a simple method because the segments can be stacked on previously assembled segments using the segments' own weight.