Title:
LOW-DENSITY LAMINATED THERMAL INSULATION MATERIAL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3856847
Kind Code:
B2
Abstract:
PURPOSE: To obtain the low-density, lightweight thermal insulation material improved in thermal insulation capability and applicability, and high in compressive resilience and vibration durability.
CONSTITUTION: A crimped fiber-contg. cotton-like fibrous sheet with carbon fibers accounting for 50-100wt.% of the total fibers is horizontally folded in several layers, and at least the respective layers of the resultant laminate adjacent to each other are mutually jointed with a binder such as a thermosetting resin into a unified form, thus obtaining the objective low-density laminated thermal insulation material 5-20kg/m3 in bulk density. For the above carbon fibers, carbonized pitch-based carbon fibers etc., can be used, and the cotton-like fibrous sheet can be laminated in ≥5 layers. The content of the binder stands at 5-20wt.% of the whole thermal insulation material. This thermal insulation material may be obtained by either of the following two alternative processes: (1) the laminate is impregnated with the binder followed by heat molding; and (2) both sides of the cotton-like fibrous sheet 1 are sprayed with a resin liquor from a nozzle 15 and the sheet is folded into a laminate 7 which is then subjected to heat molding.
Inventors:
Hiroaki Morita
Application Number:
JP15156094A
Publication Date:
December 13, 2006
Filing Date:
June 08, 1994
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
Osaka Gas Chemical Co., Ltd.
Osaka Gas Chemical Co., Ltd.
International Classes:
B32B5/02; D01F9/145; D04H1/4242; D04H1/593; D04H1/64; (IPC1-7): D04H1/58; B32B5/02; D01F9/145; D04H1/42; D04H1/64
Domestic Patent References:
| JP6385116A | ||||
| JP3121398A |
Foreign References:
| WO1992021807A1 |
Attorney, Agent or Firm:
Mitsuo Kata