| 摘要 |
<p>1468729 Pressurized dispensing containers L'OREAL 7 May 1974 [7 May 1973] 20075/74 Heading F1R The contents of a pressurized dispenser 1 are pressurized by means of an expandable pouch 13 which contains a cartridge of liquefied propellant when inserted through the opening 2 during filling. After completion of filling and closure of the container a stopper in the cartridge is ejected or, in another embodiment, the cartridge is burst, by increasing the propellant pressure by warming the dispenser, so that the pouch expands to pressurize the contents. The pouch may be spiral shaped, Fig. 7 (not shown) and the dip tube may have a secondary inlet near the upper end.</p> |
