RESIN COMPOSITION FOR LASER MARKING

PROBLEM TO BE SOLVED: To provide a marking composition which can develop color to a distinct black color by irradiating a laser beam. SOLUTION: The resin composition for laser marking is characterized by containing (A) 100 pts.wt. of a thermoplastic resin, (B) 0.5-10 pts.wt. of a calcium carbonate,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OSAMI HIROYUKI, SHIMIZU AKIRA, KAWAKITA MITSURU, KOSAKAI TOSHIYUKI
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COLOUR PRINTING COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING GENERAL PROCESSES OF COMPOUNDING LINING MACHINES MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SOLDERING OR UNSOLDERING STAMPS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TYPEWRITERS USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WELDING WORKING BY LASER BEAM WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a marking composition which can develop color to a distinct black color by irradiating a laser beam. SOLUTION: The resin composition for laser marking is characterized by containing (A) 100 pts.wt. of a thermoplastic resin, (B) 0.5-10 pts.wt. of a calcium carbonate, and (C) 0.001-5 pts.wt. of a colorant except for the above component (B), and by having a total light transmittance of 50-95%.