| 摘要 |
PCT No. PCT/EP94/01853 Sec. 371 Date Feb. 2, 1996 Sec. 102(e) Date Feb. 2, 1996 PCT Filed Jun. 7, 1994 PCT Pub. No. WO94/28759 PCT Pub. Date Dec. 22, 1994An aerosol-foam dispenser head is mounted on a container which holds a solution of an active substance and an insoluble, gaseous propellant, and which opens a valve in the container when actuated. The dispenser head has, at the near end of its outlet channel, a throttled aperture with a relatively small flow cross section. Located in the wall of the channel, downstream of the aperture is at least one opening connecting with the atmosphere, the cross section of the opening being significantly greater than that of the throttled aperture. Located at the far end of the channel is a fine-mesh grating or screen.
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