| 摘要 |
<p>The dispensing head consists of a body with an outlet (7) covered by a sleeve (11) of an elastic material which is applied by bi-injection, over-injection or over-molding of a first rigid or semi-rigid material with an elastically deformable one. The sleeve has a lip (14) projecting from its upper edge to cover the outlet and deform under pressure to let out the substance. The body of the dispensing head has a lateral skirt (8), and the sleeve is attached to it with its lower edge (12) passing under the edge of the skirt, and its main portion located over the skirt's outer surface. The thickness of the sleeve is between 0.5 and 5 mm, and preferably 1-3 mm.</p> |
