The container is formed by a high barrier film which is so perforated as to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from {HEAD ~ the container} to prevent {TAIL ~ its distortion} 
to prevent
The container is formed by a high barrier film which is so perforated as to provide a gas pressure within the container sufficient to inhibit air inflow into the container and to assure gas outflow from { HEAD ~ the container } to prevent { TAIL ~ its distortion }
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