| 摘要 |
It is a subject to provide a nozzle device capable of effectively spraying air and capable of applying chemical solutions to a traveling body at a high deposition rate. For solving the subject, the present invention is a nozzle device 100 for applying a chemical solution Y to a traveling body 50 in a paper machine 101, the nozzle device 100 comprising a nozzle main body portion 2 having a chemical solution nozzle opening 1 capable of discharging the chemical solution Y, and an air main body portion 10 capable of spraying air from both sides of the nozzle main body portion 2 so as to put the discharged chemical solution Y between, wherein the air main body portion 10 includes an air introducing passage 13 for introducing air, a pair of front and rear flow passages 14 communicating with the air introducing passage 13 and a pair of air nozzle openings 12 communicating with each of the flow passages 14 for discharging air, and wherein a relationship between a cross-sectional area SA of the air introducing passage 13 and cross-sectional areas SB of the air nozzle openings 12 satisfies |
