Package making – Methods – Filling preformed receptacle and closing
Patent
1988-06-07
1989-10-03
Coan, James F.
Package making
Methods
Filling preformed receptacle and closing
2223865, 222394, B65D 8314
Patent
active
048708054
ABSTRACT:
A flexible gas-tight, hermetically sealed pouch (11), in which a likewise closed cartridge (8) filled with a propellant in the liquid phase is disposed, is introduced into the outer envelope (1) of a container (1a), and the container (1a), which includes a valve (7) for distributing fluid (13) contained in it or introduced via the valve (7) is plugged. The cartridge (8) used has a wall capable of degrading at least partially from simple contact with the propellant, until the cartridge opens, within a period of time at least equal to that necessary to assure the packaging and closure of the container (1a ). The propellant then spreads within the pouch (11), changing at least in part to the gaseous phase, at a pressure suitable to assure the dispensing of the fluid (13). By the judicious choice of the characteristics (type, thickness) of the degradable zone of the cartridge (8), heating or other more complicated or expensive means proposed heretofore for putting the container under pressure are avoided.
REFERENCES:
patent: 3949911 (1976-04-01), Morane
patent: 4360131 (1982-11-01), Reyner
patent: 4376500 (1983-03-01), Banks et al.
patent: 4478044 (1984-10-01), Magid
patent: 4679706 (1987-07-01), Magid et al.
"L'Oreal"
Coan James F.
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