Title:
LOW-TEMPERATURE LIQUID STORAGE TANK, MANUFACTURING METHOD THEREFOR, AND THERMAL SHOCK REDUCTION METHOD
Document Type and Number:
Japanese Patent JP2022179904
Kind Code:
A
Abstract:
To reduce thermal shock transmitted to a first foamed resin layer coated on an inside surface of an outer tank of a low-temperature liquid storage tank.SOLUTION: In a low-temperature liquid storage tank 100, an under-blown layer 12, a first foamed resin layer 13, and a second foamed resin layer 14 are laminated on the inner surface of an outer tank 30. Both the first foamed resin layer 13 and the second foamed resin layer 14 are hard urethane foam. The second foamed resin layer 14 has more cells Q having a continuous open cell structure than the first foamed resin layer 13 does. Most of the cells Q having an open cell structure in the second foamed resin layer 14 communicate in a plane direction.SELECTED DRAWING: Figure 4
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Inventors:
SAITO TATSUKI
IKUMA KENJI
ITO KAZUTAKA
IKUMA KENJI
ITO KAZUTAKA
Application Number:
JP2021086709A
Publication Date:
December 06, 2022
Filing Date:
May 24, 2021
Export Citation:
Assignee:
BASF INOAC POLYURETHANES LTD
International Classes:
F17C3/04; E04H7/06
Attorney, Agent or Firm:
Hiroshi Matsuura
Kanako Axis
Kanako Axis