Abstract: A highly reliable vacuum heat insulating material having excellent processability, handleability and heat insulating performance, and a heat insulating box using the vacuum heat insulating material are provided. In the vacuum heat insulating material with the inside in an approximately vacuum state by sealing a core material 5 having a structure wherein plural pieces of fiber assembly 1 are laminated by a gas-barrier outer cover material 4, by using long fiber for the core material, fiber dust or remaining fiber by cutting is prevented from protruding into a sealing portion of the outer cover material from a cut surface of a sheet or an opening portion, and sealing failure is reduced. Further, since the core material is structured so as to be wound continuously from an inner side toward an outer side, the vacuum heat insulating material is easily manufactured, and excellent in handleability.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided.

Abstract: There are provided a vacuum thermal insulating material that is excellent in terms of a handling property, a thermal insulating property, creep resistance, and productivity; and a thermal insulating box including the vacuum thermal insulating material. A core material was enclosed and sealed in a wrapping material with a gas barrier property. The core material of the vacuum thermal insulating material in which the interior of the wrapping material is in a decompression state, is constituted by one organic fibrous assembly having continuous organic fibers formed sheet-shaped or a stack of the organic fibrous assemblies.

Abstract: A method for manufacturing a vacuum heat insulating material includes: a collecting step for extruding heat-deposited resin in a continuous state from a plurality of aligned nozzles and collecting on a conveyer as a plurality of organic fibers; a reeling step for feeding the conveyer at a predetermined speed, and producing an organic fiber assembly in a reeled sheet state by applying pressure with a roller and applying heat-deposition; a core material processing step for making a core material having a predetermined size by cutting an end face of the organic fiber assembly produced by the reeling step; a decompressing step for inserting the core material into an outer cover material from an insertion opening and decompressing an inside to an almost vacuum; and an outer cover material sealing step for sealing the insertion opening of the outer cover material the inside of which is decompressed to the almost vacuum.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, handleability and heat insulating performance, and a heat insulating box using the vacuum heat insulating material are provided. In the vacuum heat insulating material with the inside in an approximately vacuum state by sealing a core material 5 having a structure wherein plural pieces of fiber assembly 1 are laminated by a gas-barrier outer cover material 4, by using long fiber for the core material, fiber dust or remaining fiber by cutting is prevented from protruding into a sealing portion of the outer cover material from a cut surface of a sheet or an opening portion, and sealing failure is reduced. Further, since the core material is structured so as to be wound continuously from an inner side toward an outer side, the vacuum heat insulating material is easily manufactured, and excellent in handleability.

Abstract: There are provided a vacuum thermal insulating material that is excellent in terms of a handling property, a thermal insulating property, creep resistance, and productivity; and a thermal insulating box including the vacuum thermal insulating material. A core material was enclosed and sealed in a wrapping material with a gas barrier property. The core material of the vacuum thermal insulating material in which the interior of the wrapping material is in a decompression state, is constituted by one organic fibrous assembly having continuous organic fibers formed sheet-shaped or a stack of the organic fibrous assemblies.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided.

Abstract: A highly reliable vacuum heat insulating material having excellent processability, usability and heat insulating performance and a heat insulating box using the vacuum heat insulating material are provided.

Abstract: A vacuum thermal insulator includes a container having a gas barrier property and a core member placed in the container, the container being sealed such that the interior of the container is in a reduced pressure state. The core member is constituted by a sheet assembly in which organic fiber aggregates, each obtained by forming fibers composed of an organic material into a sheet-like shape, and fiber aggregates, each obtained by forming fibers composed of a material having a higher tensile modulus than the material for the organic fiber aggregates into a sheet-like shape, are randomly stacked. The fibers of the organic fiber aggregates are preferably continuous fibers. The fiber material for the organic fiber aggregates or the fiber aggregates is preferably any one of polyester, polypropylene, polystyrene, polylactic acid, aramid, LCP, and glass.