Electric heating – Metal heating – By arc
Patent
1999-05-28
2000-09-12
Ryan, Patrick
Electric heating
Metal heating
By arc
21912168, 21912167, 264 21, B23K 2600
Patent
active
061180963
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: 4092518 (1978-05-01), Merard
patent: 4414974 (1983-11-01), Dotson et al.
patent: 4629583 (1986-12-01), Goguen
patent: 4640797 (1987-02-01), Goguen
patent: 4654290 (1987-03-01), Spanjer
patent: 4769257 (1988-09-01), Duley et al.
patent: 4861620 (1989-08-01), Azuma et al.
patent: 4914554 (1990-04-01), Sowers
patent: 4928212 (1990-05-01), Benavides
patent: 4933205 (1990-06-01), Duley et al.
patent: 5007647 (1991-04-01), Gulick
patent: 5030551 (1991-07-01), Herren et al.
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: 5149938 (1992-09-01), Winston 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: 5262470 (1993-11-01), Shimotsuma et al.
patent: 5266771 (1993-11-01), Van Wyk
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), Kouno et al.
patent: 5719372 (1998-02-01), Togari et al.
patent: 5817243 (1998-10-01), Shaffer
patent: 5840791 (1998-11-01), Magerstedt et al.
Bodi Jerry Alan
Feng Ke
Elve M. Alexandra
M. A. HannaColor a division of M. A. Hanna Company
Ryan Patrick
LandOfFree
Laser marking of phosphorescent plastic articles does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Laser marking of phosphorescent plastic articles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser marking of phosphorescent plastic articles will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-98030