VERFAHREN ZUR HERSTELLUNG VON ZIFFERN, ZEICHEN UND MUSTERN AUF FORMKOERPERN AUS THERMOPLASTISCHEM KUNSTHARZ.

摘要

A method of producing characters, symbols or patterns on a thermoplastic resin molded article is characterised in that in order to produce the characters, etc. on the molded article, a dye-impenetrable cover is first applied to that part of the surface of the molded article which corresponds to the characters, etc. to be produced, impregnation dyeing is then effected on the molded article surface including at least the peripheral area of the covered part of the surface by using a sublimative dye and the cover is subsequently removed, whereby the characters, etc. are revealed as such.