Title:
SELF-TEMPERATURE ADJUSTING SHEET-LIKE HEATING ELEMENT
Document Type and Number:
Japanese Patent JP3428857
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To adjust a temperature of a heating part thorough a sharp increase of electric resistance at the heating part resulting from thermal expansion by integrally forming the heating part composed of conductive particles and an amorphous high polymer composition and a control part composed of a crystalline substance to control a calorific value of the heating part so as to be brought into close contact with each other.
SOLUTION: A crystalline high polymer is used as a control part (a base board) 4, and a heating part 5 composed of an amorphous high polymer in which conductive particles 1 are mixed, is adhered on the control part 4, and a self-temperature adjusting sheet-like heating body 6 is formed. The crystalline high polymer being the control part 4, particularly, polyethylene or the like lacks in an adhesive property, but when a polyethylene surface is roughened by processing by plasma etching or the like, adhesion becomes possible. The heating part 5 does not reveal a self-temperature adjusting function when it is independently used since the amorphous high polymer is used as a matrix, but when polyethylene of the control part 4 is heated, since it shows sharp thermal expansion at a melting point, the heating part 5 adhered on this also thermally expands, and a self-temperature heating function as a heating element 6 is exhibited.
Inventors:
Toyoaki Kimura
Application Number:
JP13374697A
Publication Date:
July 22, 2003
Filing Date:
May 23, 1997
Export Citation:
Assignee:
Mitake Electronic Industry Co., Ltd.
International Classes:
H05B3/20; H05B3/14; (IPC1-7): H05B3/14; H05B3/20
Domestic Patent References:
| JP7335378A | ||||
| JP63207080A |
Attorney, Agent or Firm:
Kozaburo Mori