| 摘要 |
PROBLEM TO BE SOLVED: To realize continuous production by a method wherein a plurality of mixing heads are arranged close to each other in the neighborhood of the inlet of double- conveyors at both the sides of the conveyors so as to direct the stock pouring height and angle of each nozzle or of a pair of nozzles vertically and horizontally in order to pour stock from an opposing pair of the nozzles and change the other pair of the nozzles over depending on stock situation. SOLUTION: Rigid urethane stock liquid 9 is poured to the central position of a lower surface part 5, for example, from the nozzle parts 7 and 7' of an opposing pair of mixing heads A and B, which are arranged on both the sides of conveyors 1. When abnormality appears in the filling properties of the spread stock liquid 9 and consequently a pair of the mixing heads A and B are changed over to a pair of mixing heads C and D, the stock liquid 9 is discharged from nozzle parts 8 and 8' before the stopping of the pouring through the nozzle parts 7 and 7' so as to stop the pouring through the nozzle parts 7 and 7' simultaneously with the arrival of the spread pattern formed by the stock liquid 9. The angles of the mixing heads A, B and C, D can be changed back and forth to the running direction of surfacing materials and their vertical movements and the change of their angles for controlling the altitudinal position between the upper and lower surfacing materials can be made possible. |
