PIPE LINING METHOD

摘要

A PIPE LINING METHOD IS PROVIDED FOR ACCURATELY CUTTING OR PUNCHING OUT A PIPE LINER BAG (4) AFTER BEING LINE ON AN INNER WALL OF A PIPE (10) WITH A GOOD OPERABILITY WHILE PREVENTING AN OPERATION ENVIRONMENT FROM BEING CONTAMINATED. A FLUID PRESSURE IS APPLIED TO ACT ON A PIPE LINER BAG (4) INTRODUCED IN A PIPE (10) TO PRESS THE PIPE LINER BAG ONTO THE INNER WALL OF THE PIPE. A THICKNESS REDUCING MEMBER (3) IS BROUGHT INTO CONTACT WITH THE OUTER SURFACE OF THE PIPE LINER BAG (4) TO PARTIALLY REDUCE THE THICKNESS OF THE PIPE LINER BAG. A PREDETERMINED PIPE LINING OPERATION WITH THE ABOVE STATE MAINTAINED. THEN, AN EXTERNAL FORCE IS APPLIED TO A THICKNESS REDUCED PORTION (4A) OF THE PIPE LINER BAG (4) TO BREAK THE PORTION.(FIG. 1)