| 摘要 |
<p>755,173. Spray producers. BAUER, W. Aug. 13, 1954 [Aug. 20, 1953], No. 23553/54. Class 69 (3). [Also in Group V] A device for spraying foamed materials comprises means whereby a hardness producing agent such as synthetic resin solution is added to a foaming liquid after it has left a foam producer in a mixing chamber provided at the spraying nozzle of the device. As shown, compressed air is supplied from a container 10 by a pipe 17 to a container 16 where the foam is produced, and by a pipe 11 to a container 12 for the hardness producing solution. A pipe 13 leads from the pipe 11 to a container 14 of foaming liquid and a pipe 15 connects this container with the container 16. A pipe 20 leads from the container 12 to a spiral nozzle 21 and to a mixing chamber 19 where the hardness producing solution mixes with the foaming liquid from the container 16. The hardness producing liquid may be supplied in a counter direction to the flow of foaming liquid or at an acute angle thereto. The solution may be sprayed into moulds or cavities to produce articles in situ.</p> |
