Radiation imagery chemistry: process – composition – or product th – Imaged product – Including resin or synthetic polymer
Patent
1983-11-23
1986-03-25
Kittle, John E.
Radiation imagery chemistry: process, composition, or product th
Imaged product
Including resin or synthetic polymer
430945, 430270, 430292, 219121LH, 219121LJ, 206459, 428187, 427 531, B23K 2618, B65D 100, B05D 306, G03C 172
Patent
active
045783292
ABSTRACT:
This invention concerns a method of marking articles having a polyolefin surface by exposure to a laser beam. The polyolefin contains a sufficient amount of a laser radiation absorbing substance for decomposing the polyolefin, so that a black mark of decomposed polyolefin will be formed.
The laser radiation absorbing substance is a silicon compound, preferably a metal silicate, e.g. calcium-metasilicate or kaoline.
The invention also comprises an article having a polyolefin surface, provided with a black mark of decomposed polyolefin formed by a laser beam.
REFERENCES:
patent: 4323317 (1982-04-01), Hasegawa
patent: 4328303 (1982-05-01), Ronn et al.
"Laser Marking" Research Disclosure, No. 16363, Nov. 1977, p. 68.
R. K. Agnihotri, H. C. Kluge and F. P. Laming, "Method for Patterning Resists", IBM Technical Disclosure Bulletin vol. 21, No. 4, Sep. 1978, p. 1475.
"CI-77007", Colour Index, third edition, The Society of Dyers and Colourists, (Lund Humphries, Bradford and London, Great Britain, 1971), vol. 4, p. 4653.
Hamilton Cynthia
Kittle John E.
Wavin B.V.
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