Powder marking agent and marking method

摘要

A powder marking agent comprising a fine powder which comprises, on a total volume basis, (a) about 48% to about 92% of a thermoplastic linear polyester, (b) about 5 to about 30% of a heat-resistant pigment, and (c) about 2 to about 40% of a fluorine-containing polymer, with the total by volume percent of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% or less and a marking method which comprises applying the powder marking agent described above onto a metal member in a marking pattern.