Vacuum thermally insulating material and method for production thereof thermally insulated equipment having the vacuum thermally insulating material and thermally insulated board

A hot-insulation cold-insulation apparatus comprising:

• a box body;
• a vacuum heat insulator applied to at least a wall part of the box body, the vacuum heat insulator including a core formed of a laminated body where glass fibers are laminated in a thickness direction of the vacuum heat insulator and an enveloping member covering the core and having gas barrier property;
• and
• a temperature regulator for keeping temperature in the box body,
• wherein the core is pressurized and molded and the glass fibers are drawn by heat deformation of the glass fibers at one of the following temperatures:
• a temperature at which the glass fibers start to deform due to own weight of the glass fibers;
• and
• a temperature at which the glass fibers become deformable due to a vertical load in pressing and sectional shapes of the glass fibers do not significantly vary, and
• a shape of the core is kept by entanglement of parts of the glass fibers instead of binding of the glass fibers.

A heat insulation board comprising a laminated body where glass fibers are laminated in a thickness direction, wherein the heat insulation board is pressurized and molded and the glass fibers are drawn by heat deformation of the glass fibers at one of the following temperatures:

• a temperature at which the glass fibers start to deform due to own weight of the glass fibers;
• and
• a temperature at which the glass fibers become deformable due to a vertical load in pressing and sectional shapes of the glass fibers do not significantly vary, and
• a shape of the heat insulation board is kept by entanglement of parts of the glass fibers instead of binding of the glass fibers.

A manufacturing method of a vacuum heat insulator comprising:

• laminating and arranging glass fibers in a thickness direction of the vacuum heat insulator and molding an assembly where the glass fibers are partially entangled;
• heating and pressing the assembly at one of the following temperatures:
• a temperature at which the glass fibers start to deform due to own weight of the glass fibers;
• and
• a temperature at which the glass fibers become deformable due to a vertical load in pressing and sectional shapes of the glass fibers do not significantly vary, and
• thermally deforming the assembly into a shape at a heating and pressing time;
• cooling the assembly thermally deformed in a state at the heating and pressing time to form a board-like core that keeps the shape at the heating and pressing time and has high restrictiveness and integrity in a thickness direction;
• drying the core and then inserting the core into an enveloping member that is formed of bag-like laminated film having an opening;
• and
• evaluating an inside of the enveloping member and heat-sealing the opening.