Vacuum heat insulating material, heat insulating box, refrigerator, refrigerating/air-conditioning apparatus, water heater, appliance, and manufacturing method of vacuum heat insulating material

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous for at least approximately as long as a length or a width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face,
• wherein, for the fiber assembly, an organic fiber assembly that is made by forming an organic fiber into a sheet-shape and applying heat welding on the organic fiber is used,
• wherein when a heat welded portion penetrates from a front surface to a rear surface of the fiber assembly, a fabric weight of a non-woven cloth which is the fiber assembly is at least 4.7 g/m2 and no more than 70 g/m2, or at least 140 g/m2 and no more than 198 g/m2, and
• wherein when the heat welded portion does not penetrate from the front surface to the rear surface of the fiber assembly, the fabric weight of the non-woven cloth which is the fiber assembly is at least 4.7 g/m2 and no more than 130 g/m2.

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous for at least approximately as long as a length or a width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face, and
• wherein, for the fiber assembly, an organic fiber assembly that is made by forming an organic fiber into a sheet-shape and applying heat welding on the organic fiber is used, and a ratio of a heat welding is made at least 3% and no more than 20% of a total area (sheet area) of the organic fiber assembly for suppressing both of deformation due to a compression strain and decrease in a heat insulating performance.

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous for at least approximately as long as a length or a width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face;
• wherein the core material is formed in a plate shape by winding a first fiber assembly wherein a plurality of sheeted fiber assemblies continuous in a length direction are adjacently arranged in a width direction, and a second fiber assembly that is placed so as to be lapped in an approximately orthogonal direction to the sheet surface of the first fiber assembly, wherein a plurality of sheeted fiber assemblies continuous in a length direction are adjacently arranged in a width direction, continuously from an inner side toward an outer side in a state wherein the first fiber assembly and the second fiber assembly are displaced by a predetermined amount Xb in a width direction.

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous for at least approximately as long as a length or a width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face;
• wherein the core material is formed in a plate shape by winding a third fiber assembly wherein a sheeted fiber assembly continuous in a length direction is continuous in a width direction, and a first fiber assembly that is placed so as to be lapped in an approximately orthogonal direction to the sheet surface of the third fiber assembly, wherein a plurality of sheeted fiber assemblies continuous in a length direction are arranged in a width direction via a predetermined space, continuously from an inner side toward an outer side in a state wherein the third fiber assembly and the first fiber assembly are lapped.

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous for at least approximately as long as a length or a width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face, and
• wherein a cross-sectional shape orthogonal to a width direction of an end portion in a length direction of the core material is an approximately triangle shape whose thickness is decreased toward an outer side in the length direction in a state wherein the core material is decompressed and sealed in the outer cover material.

A vacuum heat insulating material comprising:

• a core material structured by a laminated structure wherein a fiber assembly that is a fiber formed into a sheet shape is wound from an inner side toward an outer side, having a cutting portion where an end face is cut so as to be in a predetermined length or a predetermined width;
• and
• an outer cover material having a gas barrier property, which contains the core material inside, and has a sealing portion for sealing an area larger than a size of an outer shape of the core material by an amount of a length of a seal, for sealing an inside in a decompressed state,
• wherein the fiber forming the fiber assembly is continuous and longer than or equal to an entire length or an entire width of the core material for suppressing a protrusion of a remaining fiber that is generated by cutting the end face.