Method of packaging a fluid under pressure, and packaging container for use with the method
US4870805A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 1988 |
| Grant date | Oct 3, 1989 |
| Priority date | — |
| Expiry date | Jun 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/625
- WIPO fieldHandling
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.