SCAVENGING OXYGEN

WIPO Patent Application WO/2012/104632

A1

A food container (2) includes a rigid thermoformed plastics carton (4) which holds a dry food 6 and is closed by a removable film closure (8). The film (8) incorporates a hydride which is arranged to generate hydrogen on contact with moisture. Additionally, the film (8) is arranged to have relatively high water vapour permeability and relatively low hydrogen gas permeability. In use, water vapour from air surrounding the container (2) passes into the film (8) and reacts with the hydride to generate hydrogen. Due to the relatively low hydrogen permeability of the film (8), the hydrogen is restricted from escaping from the container. Instead, the hydrogen then reacts with any oxygen within the container in a reaction catalysed by a catalyst associated with the carton (4), thereby to scavenge oxygen within the container (2) and protect the food (6) from oxidation.

CARMICHAEL ADRIAN JOHN (GB)
FROST MARK (GB)
OVEREND ANDREW STUART (GB)
TATTUM STEVEN BURGESS (GB)

PCT/GB2012/050211

August 09, 2012

February 01, 2012

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COLORMATRIX HOLDINGS INC (US)
CARMICHAEL ADRIAN JOHN (GB)
FROST MARK (GB)
OVEREND ANDREW STUART (GB)
TATTUM STEVEN BURGESS (GB)

B65D51/24; B65D81/26

WO2008090354A1	2008-07-31
WO2010116194A1	2010-10-14
WO2008090354A1	2008-07-31

US20040129554A1	2004-07-08
EP0836935A2	1998-04-22
US5182046A	1993-01-26

"Kirk-Othmer Encyclopedia of Chemical Technology", vol. 22, 1997, pages: 256 - 278
WILLIAM HOYLE: "Powders and solids: developments in handling and processing technologies", 2001, ROYAL SOCIETY OF CHEMISTRY

APPLEYARD LEES (Halifax, West Yorkshire HX1 2HY, GB)

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