| 摘要 |
PURPOSE:To improve the adhesive strength between a fluororesin film and a metal sheet by welding the fluororesin film to a zinc-plated surface of the metal sheet. CONSTITUTION:A laminate of a fluororesin film Ff with a metal sheet St is obtd. by forming a uniform zinc-plating layer Zn on the surface of a metal sheet St to give a zinc-plated metal sheet Stp heating the sheet Stp to the m. p. of the film Ff or higher, placing the film Ff on the zinc-plated surface of the sheet Stp to melt the film Ff, and cooling the film Ff. |
