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1.发明授权Self-expanding flexible pouch including improved extensible stay to maximize opening 失效自扩展灵活的包包括改进的可扩展性保持最大限度的开放
公开(公告)号：US5184896A
公开(公告)日：1993-02-09
申请号：US774672
申请日：1991-10-11
IPC分类号： B65D33/00
CPC分类号： B65D33/007
摘要： A self-expanding flexible pouch that can be used as the measuring device for reconstituting a concentrated product contained therein. The pouch includes an improved one-piece extensible stay located in the throat area of the flexible pouch that is biased toward a relaxed, expanded, circular configuration but is initially held substantially flat in a stressed condition by the sealed top portion of the pouch. When the top portion of the pouch is removed, the improved stay expands to its relaxed, expanded configuration and thereby expands and opens the throat area of the pouch. The improved stay comprises a one-piece, continuous extensible loop having a pair of opposed hinges. The hinges are thinner in thickness than the remaining portions of the loop and aligned with the side peripheral edges of the pouch. Two opposed thick-walled sections are located between the opposed hinges. The opposed thick-walled sections provide the automatic opening force for the pouch. The thick-walled sections are substantially aligned with and secured in fixed relation to the front and back sidewall panels of the pouch. Two ribs are located on said opposed thick-walled sections to prevent the stay from sticking together. Four thin-walled transition sections are preferably employed to connect the hinges to the thick-walled sections to form the loop. The thin-walled transition sections are thinner in thickness than the thick-walled sections.
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公开(公告)号：US4898477A
公开(公告)日：1990-02-06
申请号：US259380
申请日：1988-10-18
CPC分类号： B65D33/007
摘要： A self-expanding flexible pouch that can be used as the measuring device for reconstituting a concentrated product contained therein. The flexible pouch includes an extensible stay located in the throat area of the pouch that is biased toward a circular or elliptical configuration but initially held substantially flat in a stressed condition by the pouch's sealed top portion. When the pouch's top portion is removed, the extensible stay expands to its unstressed circular configuration and thereby expands and opens the pouch's throat area. In a particularly preferred embodiment of the present invention, the pouch's bottom section is provided with a pleated bottom gusset panel that is attached to the sidewall panels' inner surface. When the reconstituting fluid is poured into the pouch, the pouch's bottom gusset panel unfolds and drops downward which allows the pouch's bottom section to also expand and assume a substantially tubular configuration. Also disclosed are various barrier laminates from which pouches of the present invention can be made which protect the pouch's contents from light, moisture, and air, and also resist the absorption of essential oils, flavoring components, and nutritional elements found in the product contained within the pouch.
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