Title: Thermal insulation material electric heating unit using same and method for preparing same
Application Number: 99127199 Application Date: 1999.12.29
Publication Number: 1276291 Publication Date: 2000.12.13
Approval Pub. Date: 2004.08.25 Granted Pub. Date: 2004.08.25
International Classifi-cation: B32B5/22;H05B3/26
Applicant(s) Name: Koyo thermal System Co., Ltd. Address:
Inventor(s) Name: Kitamura Koichi;Ueda Masaaki;Hanatani Sukeyuki
Attorney & Agent: yu hui
Abstract:
    The present invention provides an insulating material having superior insulating performance as well as sufficient mechanical strength itself to constitute furnace walls, and for which manufacture and assembly operations are easy, resulting in reduced labor cost in furnace construction. The present invention also includes a proposal for an electrical heating unit applied and a manufacturing method therefor. The insulating material (1) includes an outer layer (2) comprising mainly refractory inorganic fibers and a core layer (3) supported within the outer layer (2). The outer layer (2) has greater mechanical strength than the core layer (3). The core layer (3) comprises a composition having a better insulating performance than the outer layer (2) and extends in a plane substantially perpendicular to the thickness of the insulating material (1).
Time: 11
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