Injection molding of part having nonuniform thickness

Details Injection molding of part having nonuniform thickness Injection molding of part having nonuniform thickness

2011-04-26

2011-04-26

Heitbrink, Jill L (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

Shaping against forming surface

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.

Affiliated with

Also associated with

Rating

Injection molding of part having nonuniform thickness 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 of part having nonuniform thickness, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Injection molding of part having nonuniform thickness will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2708802