Marking method

Details Marking method Marking method

1997-02-10

1999-07-27

McPherson, John A.

Radiation imagery chemistry: process, composition, or product th

Visible imaging using radiation only other than heating by...

430945, 430944, G03C 516

Patent

active

059288426

ABSTRACT:
The present invention provides a polyolefin resin-based marking composition capable of developing a vivid color in dark brown to black on irradiation with laser beams, moldings of the composition, and a laser marking method. The marking composition comprises a polyolefin resin-based marking composition containing from 0.005% by weight to less than 0.5% by weight of a silicon compound based on the polyolefin resin.

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