| 摘要 |
PURPOSE:To bond waterproof sheets by hot melting from the surface of the sheet by a method in which the surface of the sheet is exposed to electromagnetic field to detect hot-melt material and to detect the hot-melt position, and a given strength of electromagnetic field is applied to the detected position from the surface of the sheet. CONSTITUTION:A hot-melt material 12 is applied by coating or bonding to the back side of a waterproof sheet 11 of a long film form. The hot-melt material 12 is one formed by bonding a hot-melting resin 12b to both sides of a film-like heating layer 12a consisting of iron, aluminium, copper, stainless steel, brass, or ferromagnetic alloy. The hot-melt material 12 is also formed by dispersing the alloy powder uniformly into a resin. |
