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There is provided a cap liner including a fluid impermeable layer for venting gas to and from the container and an adhering device for adhering the impermeable layer to a rim of a container and a channel extending therethrough for venting gas therethrough. Also provided by the present invention is a

There is provided a cap liner including a fluid impermeable layer for venting gas to and from the container and an adhering device for adhering the impermeable layer to a rim of a container and a channel extending therethrough for venting gas therethrough. Also provided by the present invention is a method of sealing an opening of a container by affixing a meltable layer of a sealing member to a container rim and venting the container through a vent patch, meltable layer, a foil layer, and a fluid impermeable layer having pathways thereon.

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1. A container liner comprising: a fluid impermeable layer for venting gas to and from the container, adhering means for adhering said impermeable layer to a rim of a container, a single vent hole extending therethrough for venting gas therethrough, and a vent patch covering said vent hole and no

1. A container liner comprising: a fluid impermeable layer for venting gas to and from the container, adhering means for adhering said impermeable layer to a rim of a container, a single vent hole extending therethrough for venting gas therethrough, and a vent patch covering said vent hole and not extending to the rim of the container and preventing fluid from entering said vent hole. 2. The liner according to claim 1, wherein said fluid impermeable layer includes a pathway for creating venting spaces between the container cap and the rim. 3. The liner according to claim 1, including hydrophobic means disposed on said impermeable layer and over said single vent hole for preventing fluid from entering said vent hole. 4. The liner according to claim 1, wherein said liner includes a foil layer disposed between said fluid impermeable layer and said adhering means. 5. The liner according to claim 1, wherein said vent patch includes a hydrophobic portion. 6. A method of sealing an opening of a container by; affixing a meltable layer of a sealing member to a container rim and venting the container through a single vent hole extending through a sealing means, the single vent hole covered by a vent patch covering only the vent hole, foil layer, and fluid impermeable layer and then over pathways to the rim of the container for exhaust. 7. The method according to claim 6, further including the step of adhering together the sealing means and fluid impermeable layer then affixing the meltable layer to the rim of the container. 8. The method according to claim 7, wherein said adhering and affixing steps are accomplished by creating the liner and affixing the liner to the container rim. 9. The method according to claim 7, wherein adhering step includes adhering a vent patch onto said meltable layer.