Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Akio Shimanuki0
Yoshikazu Onishi0
Date of Patent
March 21, 2017
0Patent Application Number
141154740
Date Filed
August 6, 2013
0Patent Citations Received
Patent Primary Examiner
Patent abstract
To allow a tubular film having a large opening diameter to be heat-sealed with a short length heater by a function (film width reduction function) that can reduce a size of an opening portion of the tubular film uniformly with a simple structure even when the width reduction operation is performed repeatedly.
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