Browse Prior Art Database

Liquid Dispensing Container for Materials Sensitive to Oxygen

IP.com Disclosure Number: IPCOM000036231D
Original Publication Date: 1989-Sep-01
Included in the Prior Art Database: 2005-Jan-28
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Garwin, JL: AUTHOR [+2]

Abstract

A technique is described whereby liquid dispensing systems and containers which house materials sensitive to oxygen are equipped with a flexible bladder-like material and a one-way valve. As the material within the container is dispensed, the one-way valve arrangement enables the flexible bladder to collapse, preventing air from entering the container.

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Liquid Dispensing Container for Materials Sensitive to Oxygen

A technique is described whereby liquid dispensing systems and containers which house materials sensitive to oxygen are equipped with a flexible bladder- like material and a one-way valve. As the material within the container is dispensed, the one-way valve arrangement enables the flexible bladder to collapse, preventing air from entering the container.

Typically, containers which house liquid materials allow air to enter the container after the liquid is poured out. Occasionally, dispensing systems must employ devices, such as the "Cuvinet System", whereby an over-pressure of dry nitrogen displaces the oxygen. The concept described herein implements the use of a flexible bladder, inside a container, which collapses. When used in conjunction with a one-way valve, air is then prevented from entering the container.

In order to retain the familiar external aspects of the package, rigid container 10, as shown in the figure, is retained. However, the liquid is packaged within flexible bladder 11. Flexible bladder 11 can be made of appropriate materials, such as polyethylene, TEFLON*, aluminized polyethylene, etc. As the liquid is dispensed, flexible bladder 11 collapses in relation to the amount of dispensed liquid. The open ing at the neck of the flexible bladder 11 is fitted with one-way valve 12, so that after liquid is dispensed, one-way valve 12 prevents air from entering the container. The package is...