It is what striking silver by hammer, and makes silver to stretching thinly (like foil state). It is equivalent to so called "silver leaf" in English.
In product of Yamada Heiando, by coating lacquer on "Gin-paku", "Gin-paku" will hard to come off.
In Yamada Heiando writes, "Hon-Gin-paku" is made from silver itself,"Gin-paku" is a thing which is using silver paint and try to create texture close to "Hon-Gin-paku".