TANK AND MANUFACTURING METHOD FOR TANK
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United States of America Patent
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Issued Date -
Oct 19, 2023
app pub date -
Feb 8, 2023
filing date -
Apr 19, 2022
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Abstract
A manufacturing method for a tank including a liner and a reinforcement layer having a first layer made up of a pipe fitted to an outer surface of the liner and a second layer covering the pipe includes forming the pipe by winding first fiber reinforced resin containing a first fiber and a first resin around a mandrel and thermally curing the first fiber reinforced resin under a first condition, forming the first layer by fitting the pipe to the liner, and forming the second layer by winding a second fiber reinforced resin containing a second fiber and a second resin around the liner to cover the first layer and thermally curing the second fiber reinforced resin under a second condition. The second condition defines an upper limit temperature at which a shear strength of the first resin is kept higher than a residual stress in the pipe.
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