Plastic and nonmetallic article shaping or treating: processes – Random variegated coloring during molding – By extrusion
Patent
1997-11-06
1999-02-02
Vargot, Mathieu D.
Plastic and nonmetallic article shaping or treating: processes
Random variegated coloring during molding
By extrusion
26417318, 264245, B29C 4704, B29C 4706
Patent
active
058660542
ABSTRACT:
A new and useful a plastic article, particularly plastic siding, with an accent color pattern incorporated therein, a specially formed accent color pellet which is useful in manufacturing such an article, and a process for producing the article using the pellets are provided. The process contemplates extruding a plastic product from a base material formed of powder-sized particles and specially formed accent color pellets. The accent color pellets are alloyed masses of resins and pigment which are larger than the powder particles of the base material, and have a higher vicat softening point temperature than the base material. The alloyed pellets are designed to melt controllably and to mix controllably with the base material. During the extrusion process, the accent color pellets begin to soften and disperse later than the base material, and cause controllable dispersion of the accent color into the base material, thereby producing accent color streaks in the resulting product having controllable characteristics. The process is particularly suited for producing a simulated wood-grain or streaking effect in plastic siding, and as described can produce hard streaking, soft streaking, and a mottled or variegated streaking in which more than one accent color is used simultaneously. A novel formulation for the accent color pellets is disclosed, in which poly-.alpha.-methylstyrene is used as the only high vicat softening temperature resin.
REFERENCES:
patent: 2803041 (1957-08-01), Hill et al.
patent: 4649008 (1987-03-01), Johnstone et al.
patent: 4810733 (1989-03-01), Sakuma et al.
patent: 5053444 (1991-10-01), Trotoir
patent: 5387381 (1995-02-01), Saloom
"PMI copolymer: HDT modifier for ABS", Hidetaka Yatagai, Nippon Shokubai America, New York, N.Y., Jul./Aug. 1993 Plastics Compounding, pp. 42-43.
Dorchester John J.
Harris Ronald M.
Smith Bobby D.
M. A. HannaColor a division of M. A. Hanna Company
Vargot Mathieu D.
LandOfFree
Composition and method for extruding plastic articles having acc does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Composition and method for extruding plastic articles having acc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Composition and method for extruding plastic articles having acc will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1114208