| 摘要 |
<p>Dispensing apparatus (10) for use in a pressurised dispensing container (12) comprises a valve (18) mounted in a cup member (11) and an elastomeric vessel (13) forming a collapsible chamber (23). The vessel (13) is attached to the mounting cup and depends from the cup cylindrically surrounding the valve body (18). The vessel is attached to the cup member by having a flange (14) which is thermally bonded to a thermoplastic layer (5) covering the internal surface of the cup member. The flange (14) includes grooves (9) which prevent contamination from sputtering during thermal bonding. The apparatus has application for medicinal products including edible foam dispensed from containers having a high internal fill pressure.</p> |
