INTRODUCTION OF LINING MATEERIAL THROUGH BENT TUBE

摘要

PURPOSE:To make possible the smooth introduction of a lining material through a tubular path with a bent tube part including a sharp angle part without injuring the material. CONSTITUTION:When introducing a lining material 4 for the formation of a tube lining through a tubular path 1 with a bent tube part 2 including a sharp angle part, a protecting material 5 which protects the inner angle of the sharp angle part 3 at the bent tube part 2 is previously introduced from the introduction aperture of the tubular path 1 to a position slightly beyond the bent tube part, and is installed there. Further, the lining material 4 is introduced through the tubular path 1, sliding it over the protecting material 5.