| 摘要 |
<p>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.</p> |
