Planar resistance heating element and manufacturing method thereof
First Claim
1. A manufacturing method of a planar resistance heating element by etching an aluminum foil deposited on an insulating substrate in a desired pattern, printing carbon paste and connecting current input terminals in parallel, wherein the etching is performed after tempering the aluminum foil deposited on the insulating substrate in a stepwise manner.
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Accused Products
Abstract
Disclosed herein is a manufacturing method of a planar resistance heating element and a planar resistance heating element made using the method. In the manufacturing method of a planar resistance heating element by etching an aluminum foil deposited on an insulating substrate in a desired pattern, printing carbon paste and connecting current input terminals in parallel, the aluminum foil is adapted to undergo a multiple step tempering process to thereby prevent heat deformation. The carbon paste acting as a resistor element is made of electrically conductive carbon, graphite, a resin, a solvent and a hardener which are mixed so as to optimize physical properties of the carbon paste. As a result, prevention of heat deformation of the insulating substrate, uniform heat conductivity, excellent heat-generation effect and easy manufacture may be achieved. In addition, the use of the carbon paste having optimized physical properties as a resistor element results in good heat-generation and near-zero temperature variation.
15 Citations
10 Claims
- 1. A manufacturing method of a planar resistance heating element by etching an aluminum foil deposited on an insulating substrate in a desired pattern, printing carbon paste and connecting current input terminals in parallel, wherein the etching is performed after tempering the aluminum foil deposited on the insulating substrate in a stepwise manner.
- 4. A manufacturing method of a planar resistance heating element by etching an aluminum foil deposited on an insulating substrate in a desired pattern, printing carbon paste and connecting current input terminals in parallel, wherein the carbon paste is a mixture of low-resistance carbon paste and high-resistance carbon paste.
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