Heat insulating sheet, heat insulating material, and manufacturing method of heat insulating sheet
AssigneesKaneka Corporation, Tochigi Kaneka Corporation
InventorsKazuaki Matsumoto, Hiroyuki Kikuchi, Shuzo Imai
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Abstract
Provided are heat insulating sheets that may include a resin film having a metal layer and a nonwoven fabric including resin fiber, wherein the resin film and the nonwoven fabric are joined by through holes penetrating the resin film and the nonwoven fabric, and wherein a ratio (La/Lb) of an average distance (La) between the through holes in the resin film to an average distance (Lb) between the through holes in the nonwoven fabric is 1.001 or more and 1.10 or less. Further provided are manufacturing methods of a heat insulating sheet that may include a resin film having a metal layer and a nonwoven fabric including a resin fiber.
Claims10
A heat insulating sheet, comprising:
- a resin film having a metal layer;
- and
- a nonwoven fabric including resin fiber,
- wherein the resin film and the nonwoven fabric are joined by through holes penetrating the resin film and the nonwoven fabric,
- wherein a ratio (La/Lb) of an average distance (La) between the through holes in the resin film to an average distance (Lb) between the through holes in the nonwoven fabric is 1.0010 or more and 1.10 or less,
- wherein the nonwoven fabric is in a taut state between the through holes, and
- wherein the resin film having the metal layer is in a loose state between the through holes, such that the resin film is wrinkled.
Dependencies are inferred from the claim text.