Thermal insulator and method for manufacturing same
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYuji Yamagishi, Ryosuke Usui, Yuuichi Abe, Shun Aota, Rikako Iwasaki
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Abstract
Provided is a thermal insulator which can be prevented from having gaps. The thermal insulator includes a nonwoven fabric, and xerogel in interior spaces of the nonwoven fabric. The thermal insulator has a plurality of protrusions on a surface of the thermal insulator, a height of the protrusion ranges from 0.10 t to 0.25 t inclusive and a size of the protrusion at the surface of the thermal insulator ranges from t to 5 t inclusive, where t is a thickness of the thermal insulator, and pores are provided inside the thermal insulator in a region provided with the protrusions.
Claims3
A thermal insulator comprising a nonwoven fabric and silica xerogel in interior spaces of the nonwoven fabric, the silica xerogel including nano-sized spaces, wherein:
- the thermal insulator has a plurality of protrusions on a first surface of the thermal insulator,
- a height of each of the plurality of protrusions ranges from 0.10 t to 0.25 t, inclusive, and a size of each of the plurality of protrusions ranges from t to 5 t, inclusive, where t represents a thickness of the thermal insulator,
- the thermal insulator includes a plurality of pores, each of the plurality of pores is inside the thermal insulator under a region of the first surface, the region being provided with each of the plurality of protrusions,
- each of the plurality of pores is enclosed by the silica xerogel and the nonwoven fabric,
- each of the plurality of protrusions is caused by a deformation of the first surface due to one of the plurality of pores, and
- wherein the nonwoven fabric has an average fiber length of 5 mm or less.
Dependencies are inferred from the claim text.