| 摘要 |
PROBLEM TO BE SOLVED: To secure the waterproof property of the joint part of wires having different diameters. SOLUTION: A waterproof sheet 10 is composed of a holding material layer 13, which has a number of cavities hold the permeating waterproof material and prevent the waterproof material from penetrating waterproof material layer 11 and 12 which have relatively different viscosities respectively and are provided on both the sides of the holding material layer 13, so as to bury the holding material layer 13 between them. The joint part of wires 17 and 18 is covered with the waterproof sheet 10 to have the waterproof material layer 11 with a relatively low viscosity inside and have the waterproof material layer 12 with a relatively high viscosity outside. Then a tape 22 is wound on the waterproof sheet 10. Since the interstices between the wires 17 and 18 is filled with the low viscosity waterproof material layer 11 to adhere mutually closely, even for the wires of the joint part with different diameters, the waterproof property can be secured. |
