| 摘要 |
<p>The present invention relates to a spray head for a fluid substance containing an active material and a carrier liquid that can evaporate, which head comprises a body (4) for receiving said substance that communicates with a canula (40) for conveying said substance to a spray nozzle (401), the internal surface of which defines a channel for conveying said liquid to said nozzle (401). Said canula (40) includes at least one capillary retention zone (51), i.e. at least one zone in which, in the absence of intentional flow of liquid in the channel (6), the liquid present is held in place, without migrating towards said nozzle (401), in particular by capillary effect.</p> |
