Packaging with venting holes for containing a particulate...

B - Operations – Transporting – 65 – D

Patent

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Details

B65D 77/22 (2006.01) B65D 5/42 (2006.01) B65D 33/01 (2006.01)

Patent

CA 2453801

A packaging for containing a particulate product is disclosed in preferred forms of a canister (10) and a bag (100). The packaging includes a body (11, 110) and at least one microhole (40, 400) formed in the body (11, 110). Other than the microhole(s) (40, 400), the body (11, 110) is hermetically sealed. In this regard, the body (11, 110) defines an internal storage region (20, 200) configured to contain a particulate product (22). The microhole(s) (40, 400) are sized to allow passage of air from the internal storage region (20, 200), as well as to limit passage of the particulate product (22). During use, a decrease in atmospheric pressure applied to the packaging, such as during shipping, results in air being vented from the internal storage region (20, 200) via the microhole(s) (40, 400). Due to this air flow, an internal pressure of the body (11, 110) maintains substantial equilibrium with atmospheric pressure such that the body (11, 110) will not unexpectedly expand or in the case of bag (100) burst.

L'invention concerne un emballage destiné à contenir un produit particulaire, se présentant de préférence sous la forme d'une boîte métallique (10) ou d'un sac (100). L'emballage comprend un corps (11, 110) et au moins un micro-trou (40, 400) formé dans ce corps (11, 110). Hormis les micropores (40, 400), le corps (11, 110) est scellé hermétiquement. A cet égard, le corps (11, 110) délimite une zone de stockage intérieure (20, 200) configurée pour contenir un produit particulaire (22). Les micro-trous (40, 400) sont dimensionnés pour permettre le passage de l'air à partir de la zone de stockage intérieure (20, 200), tout en limitant le passage du produit particulaire (22). En cours d'emploi, une diminution de la pression atmosphérique appliquée à l'emballage, par exemple durant l'expédition, a pour effet que l'air s'échappe de ladite zone intérieure de stockage (20, 200) par les micro-trous (40, 400). Du fait de cet écoulement d'air, une pression interne du corps (11, 110) maintient sensiblement l'équilibre avec la pression atmosphérique, de sorte que le corps (11, 110) ne va pas se dilater de façon inattendue, ni éclater, dans le cas d'un sac (100).

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