Lateral pipe lining material and manufacturing method thereof

A tubular lateral pipe lining material to be inserted into a lateral pipe through a lateral pipe opening in a main pipe, comprising:

• a tubular resin absorbing material being capable of being impregnated with a curing resin and having one end folded outward, the one end having a distal end portion provided with a plurality of separate pieces separated in a petal-like arrangement;
• a first curved flange made of a thermoplastic resin provided with an opening formed in a central area to fit the tubular resin absorbing material and with a ring-shaped concave portion provided at an outer edge of the opening to arrange the separate pieces;
• and
• a second flange made of a thermoplastic resin provided with an opening formed in a central area to fit the tubular resin absorbing material and having an inner side surface curved to closely contact an outer surface of the first flange, wherein
• the second flange is attached to the first flange in full contact to sandwich the separate pieces of the tubular resin absorbing material arranged in the concave portion of the first flange, and the first and second flanges are bonded to the separate pieces with an adhesive applied on the concave portion of the first flange in which the separate pieces of the tubular resin absorbing material are arranged.