A lateral pipe lining material (1, 1') is inserted into a lateral pipe (31) that intersects with a main pipe (30). The lateral pipe lining material (1, 1') includes a flexible tubular resin-absorbing material (2) impregnated with an uncured liquid curable resin and a flange member (8, 12) joined thereto. The flange member (8) comprises a flange part (8a) having an arcuately curved surface whose curvature corresponds to an inner surface of the main pipe (30), and a cylindrical part (8b) that extends from the flange part (8a). The tubular resin-absorbing material (2) has one end (2a) folded back outwards. The folded-back end (2a) of the tubular resin-absorbing material (2) is fitted onto the cylindrical part (8b) of the flange member and pressed out over the flange part (8a) of the flange member. An adhesive (9) is applied to the flange part (8a) of the flange member (8) and the folded-back end (2a) of the tubular resin-absorbing material (2) to bond the tubular resin-absorbing material to the flange member, thus producing a lateral pipe lining material in an uncomplicated manner with few members.
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