Method of locating liner within sewer pipe

A method of making a cured-in-place pipe repair to a sewer pipe buried in the ground and having an area to be repaired therein, the method comprising:

• providing an access pipe having a first end in communication with the sewer pipe;
• inverting a bladder tube having a liner tube therein impregnated with uncured resin capable of curing and hardening through the access pipe and into the sewer pipe so that the liner tube ultimately is positioned on the outside of the bladder tube in registered alignment with the area of the sewer pipe to be repaired;
• permitting the uncured resin impregnating the liner tube to cure and harden;
• removing the bladder tube from the liner tube and the sewer pipe to leave the liner tube cured in place within the lateral tube without blocking the pipe.

A method of making a cured-in-place sewer pipe repair to a pipe buried in the ground and having a repair area needing repair and having opposite repair area margins, the sewer pipe permitting the flow of sewage therethrough, the method comprising:

• taking an elongated bladder tube having a first bladder end and a second bladder end;
• positioning a liner tube inside the bladder tube;
• frangibly attaching the liner tube to the bladder tube in the field;
• impregnating the liner tube with a resin in an uncured state capable of curing and hardening;
• inverting the bladder into the pipe to an inverted position whereby the liner tube is outside the bladder tube and is located within the sewer pipe;
• positioning the liner tube within the sewer pipe during the inverting step with the liner tube adjacent the area of the sewer pipe to be repaired and with the liner tube not blocking the flow of sewage through the sewer pipe;
• permitting the uncured resin to cure and harden;
• and
• removing the bladder tube from the liner tube and the access bore to leave the liner tube cured in place within the pipe.

A method of making a cured-in-place pipe repair to a pipe having an area needing repair containing a first margin and a second margin, an access bore having a lower access bore end in communication with the pipe and having an upper access bore end in communication with the atmosphere;

• the method comprising:
• taking an elongated bladder tube having a first bladder end and a second bladder end;
• placing an elongated liner tube within the bladder tube, the liner tube having first and second liner tube ends;
• impregnating the liner tube with an uncured resin;
• inserting a guide tool into the access bore and positioning the guide tool near the lower access bore end and at least partially in the pipe;
• inverting the bladder tube and the liner tube into the access bore and about the guide tool and into the pipe to a position wherein the liner tube is on the outside of the bladder tube and is positioned adjacent the area of the pipe needing repair and does not block the pipe;
• permitting the uncured resin to cure and harden;
• removing the bladder tube from the liner tube and the access bore to leave the liner tube cured in place within the pipe in a position which does not block the pipe;
• and
• removing the guide tool from the access bore.