Laser marking of phosphorescent plastic articles

Details Laser marking of phosphorescent plastic articles Laser marking of phosphorescent plastic articles

1997-12-16

1999-11-02

Jones, Deborah

Compositions

Organic luminescent material containing compositions

Synthetic resin containing

25230136, 430541, 430346, 430363, 430945, 106401, 106416, C09K 1108, G03C 732, C04B 1400

Patent

active

059764112

ABSTRACT:
The invention provides molded, extruded or formed phosphorescent plastic articles having laser marked indicia and methods for preparing the articles. The indicia may be seen as a contrast against a phosphorescent background or, alternatively, the indicia may themselves be phosphorescent. An article of the invention has a composition comprising about 50% to about 99% by weight of a thermoplastic or thermosetting resin, about 1% to about 50% by weight of a phosphorescent phosphor pigment and about 0.001% to about 1% by weight of a laser energy absorbing additive. Resin compositions which themselves are laser energy absorbing do not require the additive; however, the addition of small quantities of the laser energy additive enhances the quality and contrast of the laser mark. The composition may further comprise small quantities of one or more of a whitening pigment, a lubricating agent, or an inert filler without interfering with the phosphorescence of the article and/or the quality and contrast of the laser mark.

REFERENCES:
patent: 3832556 (1974-08-01), Schroeder
patent: 3879611 (1975-04-01), Schroeder
patent: 3978340 (1976-08-01), Schroeder
patent: 4035652 (1977-07-01), Schroeder
patent: 4070763 (1978-01-01), Carts, Jr.
patent: 4414974 (1983-11-01), Dotson et al.
patent: 4629583 (1986-12-01), Goguen
patent: 4640797 (1987-02-01), Goguen
patent: 4861620 (1989-08-01), Azuma et al.
patent: 4914554 (1990-04-01), Sowers
patent: 4928212 (1990-05-01), Benavides
patent: 5007647 (1991-04-01), Gulick
patent: 5053440 (1991-10-01), Schueler et al.
patent: 5053930 (1991-10-01), Benavides
patent: 5063137 (1991-11-01), Kiyonari et al.
patent: 5073843 (1991-12-01), Magee
patent: 5075195 (1991-12-01), Babler et al.
patent: 5135591 (1992-08-01), Vockel, Jr. et al.
patent: 5217763 (1993-06-01), Boury
patent: 5220166 (1993-06-01), Takeuchi et al.
patent: 5223330 (1993-06-01), Vockel, Jr. et al.
patent: 5248878 (1993-09-01), Ihara
patent: 5330195 (1994-07-01), Gulick
patent: 5346802 (1994-09-01), Ohbachi et al.
patent: 5424006 (1995-06-01), Murayama et al.
patent: 5445923 (1995-08-01), Takahashi et al.
patent: 5489639 (1996-02-01), Faber et al.
patent: 5576377 (1996-11-01), El Sayed et al.
patent: 5578120 (1996-11-01), Takahashi et al.
patent: 5588736 (1996-12-01), Shea, Sr.
patent: 5655826 (1997-08-01), Kuno et al.
McKee, Terry. Laser Marking of Polyethylene and Other Pilyolefins with Additives. Plastics Formulating & Compounding, pp. 27-32. Nov./Dec. 1995.
McKee, Terry. Laser Marking of Polyethylene, Other Polyolefins Making Waves. Packaging Technology & Engineering, Aug. 1995, pp. 48-52.
Lee, L.Y. et al. Laser Printable Black Cable Jacketing Compounds. International Wire & Cable Symposium Proceedings, 1995, pp. 823-828.
Stevenson, R.L. (1992). Industrial Strength Laser Markings. Excel/Control Laser, Inc., Orlando, Florida 32809, pp. 1-49.
McKee, Terry J. et al. Customized Decorating of Plastic Parts With Gray Scale and Multi-Color Images Using Laser. Proceedings of the Annual Technical Conference, Society of Plastics Engineers, Toronto, Canada Apr. 27-May 2, 1997.
Graff, Gordon. Resin Systems Permit Color Laser-Marking Applications. Modern Plastics, Dec. 1996.
Manufacturer=s Literature. Afflair Lustre Pigments and Lazer Flair. EM Industries. (date unknown).
Manufacturer's Literature. Lasermarking of Thermoplastics. Ciba-Geigy. Feb. 2, 1993.

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