Seal head and container sealed with using the seal head
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United States of America Patent
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Feb 27, 2018
Issued Date -
N/A
app pub date -
Jun 27, 2014
filing date -
Jul 1, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a portion container whose detaching seal portion can be easily detached by a stress applied from a radial inner side based on an inside pressure of a container body, but can be hardly detached by a stress applied from the outside during distribution. Provided also are a seal head for sealing such container and a container sealed with using such seal head. The seal head includes pressing end portions for pressing a lid member against a flange of an opening. At least a portion of the pressing end portions is formed as an uneven projecting portion having different curvature radii in its cross sectional contour between a radial inner portion and a radial outer portion of the opening.
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