High-transparency laser-markable and laser-weldable plastic...

B - Operations – Transporting – 41 – M

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B41M 5/26 (2006.01) B23K 26/18 (2006.01) B23K 26/20 (2006.01) C08K 3/22 (2006.01) C08K 9/02 (2006.01)

Patent

CA 2558154

The present invention relates to high-transparency plastic materials which are laser-markable and/or laser-weldable due to a content of nanoscale laser-sensitive metal oxides. These plastic materials, which may be provided as molded bodies, semifinished products, molding compounds, or lacquers, particularly contain metal oxides having particle sizes from 5 to 100 nm and a content of 0.0001 to 0.1 weight-percent. Typical metal oxides are nanoscale indium-tin oxide or antimony-tin oxide. These materials may be used in particular for producing laser-markable production products.

La présente invention concerne des matières plastiques hautement transparentes qui peuvent être marquées et/ou soudées au laser grâce à une concentration en oxydes métalliques nanométriques sensibles au laser. Ces matières plastiques, qui peuvent se présenter sous forme de corps moulés, de produits semi-finis, de matières à mouler ou de peintures, contiennent notamment des oxydes métalliques qui présentent une taille des particules située entre 5 et 100 nm et une concentration située entre 0,0001 et 0,1 % en poids. Des oxydes métalliques typiques sont indium-oxyde d'étain ou antimoine-oxyde d'étain. Ces matières peuvent notamment être utilisées pour produire des biens de production pouvant être marqués au laser.

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