Injection molding of part having nonuniform thickness

Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface

Reexamination Certificate

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Details

C425S555000

Reexamination Certificate

active

07931847

ABSTRACT:
Injection molding of a part having a nonuniform thickness is provided. One disclosed embodiment of an injection molding device includes one or more side walls, a first mold surface intersecting the side walls and being stationary with respect to the side walls, and a second mold surface intersecting the side walls so as to define with the side walls and the first mold surface a cavity configured to receive a metered amount of injected molten thermoplastic material. The second mold surface is moveable toward the first mold surface in such a manner that a first end of the second mold surface moves a larger physical travel distance toward the first mold surface than does a second end of the second mold surface during a molding process.

REFERENCES:
patent: 4447372 (1984-05-01), Kreuttner
patent: 5044925 (1991-09-01), Watanabe
patent: 5236656 (1993-08-01), Nakajima
patent: 5658522 (1997-08-01), Fischer
patent: 5989471 (1999-11-01), Lian et al.
patent: 6398988 (2002-06-01), Jenkins et al.
patent: 6579485 (2003-06-01), Smith et al.
patent: 7069974 (2006-07-01), Rittner et al.
patent: 7108811 (2006-09-01), Summerer
patent: 2005/0189665 (2005-09-01), Nishigaki
patent: 2007/0083086 (2007-04-01), LeVahn et al.
patent: 2008/0305339 (2008-12-01), Kotaki
patent: 19517024 (1996-06-01), None
patent: 10115647 (2002-10-01), None
patent: 1939386 (2008-07-01), None
“A Study of the Effects of Process Parameters for Injection Molding on Surface Quality of Optical Lenses”, Retrieved at <<http://www.sciencedirect.com/science?—ob=ArticleURL&—udi=B6TGJ-4T8SKYX-1&—user=10&—rodc=1&—fmt=&—orig=search&—sort=d&view=c&—acct=C000050221&—verison=1&—urlVersion=0&—userid=10&md5=4129f009319400f6454fd6b3ff40bc48>>, vol. 209, Issue 7, Apr. 1, 2009, Journal of Materials Processing Technology, pp. 3.

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