Patent ID: 9103482
Filing Date: 2015-08-11
Classification: F16L,F24H,F25D,H01L,Y10T

Abstract:
1. 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 fiber assembly is in a sheet shape continuous in a length direction, and the core material is in a plate shape having a flat portion formed of laminated layers of the fiber assembly, and two bending end portions respectively formed on both longitudinal sides of the flat portion, and wherein a winding end of the fiber assembly is placed to be adjacent to either of the two bending end portions.