| 摘要 |
PCT No. PCT/DK96/00169 Sec. 371 Date Nov. 24, 1997 Sec. 102(e) Date Nov. 24, 1997 PCT Filed Apr. 9, 1996 PCT Pub. No. WO96/31995 PCT Pub. Date Oct. 10, 1996A cooking surface has a thickness between 0.05 and 3.0 mm to optimize between highest efficiency, lowest magnetic stray field, and desired surface material. In the thickness range of 0.05 to 0.2 mm, a top layer may consist of plasma sprayed hard ceramic such as alumina which can be impregnated with poly-tetra-fluor-ethylene. In the thickness range of 0.2 to 2.0 mm, the top layer may consist of glass fibre reinforced material which can be impregnated with poly-tetra-fluor-ethylene and can be of a hardened quality. In the thickness range of 1.00 to 3.00 mm, the top layer may consist of a vitroceramic or glass material. |
