CONTAINER-DISPENSER PRESSURIZATION METHOD AND DEVICE

摘要

A method of filling and pressurizing container-dispen-sers includes loading a gas-adsorbent solid and an adsorbable gas into a chamber separate from a chamber containing the product to be dispensed. The solid can be loaded prior to charging of the product through a first orifice, and thereafter the source chamber is charged with gas through a second orifice. Alternatively, the source chamber can be filled in whole or in part while remote from the product chamber and thereafter inserted into the product chamber. The pressurized container-dispenser has a separate pressure source chamber containing a gas-adsorbent solid and an adsorbable gas and having means to transmit source chamber pressure to a product chamber for dispensing of a product therefrom. Transmission means may include a movable wall separating the product and source chambers, a check valve, a constant pressure valve, and a membrane of the type allowing passage of gas but resisting passage of non-gaseous fluid. The source chamber can be defined by an enclosure of substantially fixed volume secured adjacent the product chamber. Alternatively, the source chamber can be defined by an unsupported enclosure free within the product chamber.