Packaging bag with self-closeable outflow port, and method of manufacturing the packaging bag
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United States of America Patent
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Jan 11, 2011
Issued Date -
N/A
app pub date -
Nov 22, 2002
filing date -
Nov 22, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
In the pouch of the present invention in which a pouring spout is formed by means of a heat-sealed part and a non-heat-sealed part by heat sealing plastic films, the inside surfaces of the films that form the portion of the boundary area between the heat-sealed part and non-heat-sealed part of the pouring spout passage on the side of the non-heat-sealed part contact each other so that no gaps are left in a closed state. Accordingly, even if the pouch is suspended with the pouring spout down following the opening of the pouring spout, the leakage of the contents such as a liquid or the like accommodated in the interior of the pouch from the pouring spout a small amount at a time can be securely prevented.
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