Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Reexamination Certificate
2011-03-15
2011-03-15
Heitbrink, Jill L (Department: 1743)
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
C264S328100, C425S145000, C425S587000
Reexamination Certificate
active
07906048
ABSTRACT:
A thermoplastic injection molding system and method of use is described for molding parts from heated plastics and other organic resins. The machine uses heat sources located along the barrel to heat the source material while an auger screw transports the source material in the barrel. This transport step does not shear the source material, nor does it use friction to produce the heat necessary to melt the source material. The material becomes substantially liquid or melted during the heating process, and the melted material is forced, by the auger screw, into a chamber whereupon a plunger, situated concentrically with the auger screw, injects the material from the chamber into a mold. Sensors located along the barrel and in the chamber ensure consistency between mold cycles. The controller dynamically adjusts the injection molding process to achieve more consistent and reliable molded parts.
REFERENCES:
patent: 2680880 (1954-06-01), Corbett
patent: 3118184 (1964-01-01), Swenson
patent: 3888393 (1975-06-01), Drori
patent: 5356281 (1994-10-01), Katsuno et al.
patent: 7122146 (2006-10-01), Akopyan
patent: 7361294 (2008-04-01), Pierick et al.
patent: 7717698 (2010-05-01), Cosgun
patent: 2002/0020943 (2002-02-01), Leopold et al.
patent: 2003/0021860 (2003-01-01), Clock et al.
patent: 2006/0134264 (2006-06-01), Hahn
patent: 2006/0197254 (2006-09-01), Onishi
patent: 2007/0104822 (2007-05-01), Okabe
patent: 2007/0141188 (2007-06-01), Kim
patent: 2007/0235901 (2007-10-01), Akopyan
patent: 2008/0217815 (2008-09-01), Akopyan
patent: 2009/0045538 (2009-02-01), Craig et al.
patent: 2009/0057938 (2009-03-01), Zhang
patent: 60-199623 (1985-10-01), None
patent: 2006/042849 (2006-04-01), None
patent: WO 2009/021315 (2009-02-01), None
patent: WO 2009/026673 (2009-03-01), None
Bozzelli, “Process Control for Injection Molding Machines: Strategy & Requirements to be an Internationally Competitive Molder”, Proceedings of the 51st Annual Technical Conference of the Society of Plastics Engineers, 1996, pp. 1-6.
Collins, “Monitoring Cavity Pressure Perfects Injection Molding”, Assembly Automation, 1999, vol. 19, No. 3, pp. 197-202 http://www.emeraldinsight.com/Insight/viewContentItem.do?contentType=Article&hdAction=Inkpdf&contentId=874804.
Kapoor, et al., “Consistency of Multi Cavity Melt Control Injection Molding in a Commercial Application”, International Journal of Polymer Processing, 1998, vol. 13, No. 4, pp. 398-402.
Kazmer, et al., “The process capability of multi-cavity pressure control for the injection molding process”, Polymer Engineering and Science, Apr. 8, 2004, vol. 37, No. 11, pp. 1880-1895, Abstract available at http://www3.interscience.wiley.com/journal/108063992/abstract?CRETRY=1&SRETRY=0, accessed on Jul. 16, 2009.
Sherbelis, et al., “The Methods and Benefits of Establishing a Process Window”, written on behalf of Moldflow Pty, Ltd., 1997, available at http://kazmer.uml.edu/Staff/Archive/1997ANTEC—Process—Window.pdf, pp. 1-10.
Linehan, “A Short Tutorial on Cavity Pressure Transducer Usage”, written on behalf of D-M-E Company, Jun. 22, 1993, available at http://www.dme.net/wwwdme/tech/Pressure—Tutorial—2.pdf, pp. 1-5.
Sloan, “A New Machine Segregates Injection and Extrusion”, IMM, May 2003, available at http://www.rdray.com/icu/icu.htm, pp. 1-5, printed on Jul. 17, 2009.
International Search Report for International (PCT) Application No. PCT/US09/41594, mailed Jun. 11, 2009.
Written Opinion for International (PCT) Application No. PCT/US09/41594, mailed Jun. 11, 2009.
Goodship, V., ed., “Troubleshooting Injection Moulding,” RAPRA Review Reports, 2004, vol. 15, No. 4.
Heitbrink Jill L
Koalesce, Inc.
Sheridan & Ross P.C.
LandOfFree
Injection molding method and apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Injection molding method and apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding method and apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2689589