| 摘要 |
2057071 9014284 PCTABS00002 The current trend is to reduce the amounts of aerosol propellant in the atmosphere. The present self pressurized container solves this problem by providing an alternative to an aerosol container. The self pressurized container (10) is constructed from a liner/sleeve assembly containing a thin flexible radially expandable material (14) inside an elastomeric sleeve (16). The liner is cylindrical with longitudinally extending pleats (48) formed on the sidewall of the liner (14). The pleated liner (14) has memory so that it returns to a folded state when unstressed and is capable of causing nearly all of the product contained therein to be dispensed. The top assembly has a valve (30) with a metallic cup (26) whose rim (66) is crimped around a ring (56) surrounding a central opening of a metallic dome (18), but with a part of the sidewall of the liner (14) clamped between the cup (26) and the dome ring (56) as a gasket to form a fluid tight closure.
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