Pouring port, method for producing same and container for liquid provided with the pouring port
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United States of America Patent
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Oct 21, 2014
Grant Date -
Nov 3, 2011
app pub date -
Dec 24, 2009
filing date -
Jan 6, 2009
priority date (Note) -
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Abstract
A pouring port of a container for liquid at one end of which a rubber stopper allowing the penetration of an injection needle therethrough is embedded, wherein: the pouring port is formed by welding a port part, at least the innermost layer of which forming the discharge channel thereof comprises a resin containing a COP-based resin as the main component, with a stopper body part, which holds the rubber stopper and comprises a resin containing a COP-based resin as the main component, via the resin layers containing the respective COP-based resins as the main component; and at least the resin constituting the stopper body part contains a rubber component in an amount of not more than 30% by mass, or has, in the main chain, a molecular structure represented by general formula (1)
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