| 摘要 |
PURPOSE: A wire is provided to improve productivity and profitability by using non-bridging polyethylene type copolymers. CONSTITUTION: A fire-proof layer(20) surrounds the exterior of a center conductor. The center conductor is manufactured by twisting two or more metal wires. The fire-proof layer comprises a mixture of resin, mica, and metal hydroxide. An insulating layer(30) surrounds the exterior of the fire-proof layer. A sys layer(50) surrounds the exterior of the insulating layer. The metal hydroxide is selected from a group consisting of magnesium hydroxide, aluminum hydroxide, hydroxide borate, and calcium hydroxide. The fire-proof layer comprises clay, feldspar, or mineral supplements which are a mixture of the clay and the feldspar. |
