| 摘要 |
An aerosol dispenser comprises a canister (2) with an elongated passage in the form of a tube coiled within the canister, a discharge valve (8) being connected at one end of the tube while the other end (6) is closed off to contain a source of gas pressure. Resistance means in the form of restrictors (22) are formed in the tube. The passage may alternatively take the form of an array of connected passageways (90) formed by a plastic extrusion, with an upper manifold (88) housing a discharge valve (94) and the pressurised gas. |
