Heating element
The present invention relates to a wet planar heating element and a manufacturing method therefor and, more specifically, to a wet planar heating element and a manufacturing method therefor, the element comprising: a planar heating unit including an upper waterproof film layer, a lower waterproof fi...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The present invention relates to a wet planar heating element and a manufacturing method therefor and, more specifically, to a wet planar heating element and a manufacturing method therefor, the element comprising: a planar heating unit including an upper waterproof film layer, a lower waterproof film layer, a planar heating layer located between the upper waterproof film layer and the lower waterproof film layer, and an electrode layer; external waterproof film layers respectively provided on both surfaces of the planar heating unit; and non-woven fabric layers made of fibers, respectively interposed between the planar heating unit and the external waterproof film layers, having pores between the fibers so as to have a plurality of pores, and having uneven portions formed on the surfacesthereof, wherein concave portions of the uneven portions are closed by the upper waterproof film layer, the lower waterproof film layer, and the external waterproof film layers so as to be formed as air pockets within the non |
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