Patent ID: 8985855
Filing Date: 2015-03-24
Classification: B65D

Abstract:
1. A gastight valve strip for a reclosable container, the reclosable container having a container aperture through a sidewall of the container, the valve strip comprising: (i) a first film layer having a periphery; (ii) a first thermal seal disposed around the periphery of the first film layer; (iii) a second film layer opposing the first film layer, the first and second film layers adapted to be disposed over a container aperture through a sidewall of the reclosable container, the second film layer being attached to the first film layer by the first thermal seal, and opposing surfaces of the first and second film layers forming a substantially gastight seal therebetween upon contact of the first and second film layers to each other, wherein the second film layer comprises an attachment surface being adapted to be sealed to the sidewall of the reclosable container, the attachment surface comprising a patterned portion that defines a region of flow channels; (iv) a first film layer aperture extending through the first film layer, the first film layer aperture being in fluid communication with an exterior side of the valve strip; (v) a second film layer aperture extending through the second film layer, the second film layer aperture being configured to be in fluid communication with the container aperture through the patterned portion of the attachment surface, wherein the patterned portion extends along the attachment surface and into the second film layer aperture, and the second film layer aperture is offset and spaced apart from the first film layer aperture; and (vi) a second thermal seal between the first and second film layers, the second thermal seal surrounding a region that includes the first film layer aperture and the second film layer aperture, wherein at least a portion of a surface of the second film layer opposite to the attachment surface comprises a patterned portion to provide flow channels in fluid communication with the second film layer aperture, such that a vacuum pressure dispersed over the first film layer aperture and the flow channels separates the first and second film layers, to allow gas to exhaust from the reclosable container through the container aperture.