| 摘要 |
PROBLEM TO BE SOLVED: To arrange a resin tube tightly without reducing the radius of curvature at bends by bending the tube in zigzag such that the bends are superposed while being shifted. SOLUTION: A resin tube 1 is bent in zigzag at such a pitch P as the radius of curvature R at a bend 2 is equal to the radius of curvature at the bend of the zigzagged resin tube. The bends are superposed while being shifted at same pitch P such that the interval d between adjacent resin tubes on one side will be equal to 1/3P. The resin tube 2 is further bent at the starting end and reciprocated once and one half so that the interval d between adjacent resin tubes on both sides will be equal to 1/3P. Two resin tubes 1 are superposed at the bend 2 and coupled, at the start and end thereof, with headers 3, 4 disposed at a predetermined interval in the longitudinal direction (perpendicular to the surface of paper). Each header 3, 4 has openings 5 to be coupled with the resin tube at a constant interval in the vertical direction.
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