Laser-markable plastics and their preparation and use

Details Laser-markable plastics and their preparation and use Laser-markable plastics and their preparation and use

2007-05-15

2007-05-15

Szekely, Peter (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S205000, C523S209000, C523S216000, C524S413000, C524S430000, C524S431000, C524S445000, C524S447000, C524S449000

Reexamination Certificate

active

10017481

ABSTRACT:
The invention relates to a laser-markable transparent or translucent plastics which comprise pearlescent pigments in combination with laser-sensitive pigments which themselves do not exhibit any pearlescent effect. The pigment combination considerably improves the scanner legibility of applied laser markings. The invention also relates to a process for preparing the plastics, to the use of the plastics for producing moldings, to moldings produced in this way, and generally to the use of a mixture made from pearlescent pigment and laser-sensitive pigment in laser-markable plastics, for improving the scanner legibility of laser markings applied to the plastics.

REFERENCES:
patent: 5075195 (1991-12-01), Babler et al.
patent: 6291551 (2001-09-01), Kniess et al.
patent: 6294010 (2001-09-01), Pfaff et al.
patent: 6444068 (2002-09-01), Koops et al.
patent: 6545065 (2003-04-01), Solms et al.
patent: WO98/03583 (1998-01-01), None
European Search Report, Mar. 19, 2002.

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