Molds
“A mold or mould is a hollowed-out block that is filled with a liquid like plastic, glass, metal, or ceramic raw materials. The liquid hardens or sets inside the mold, adopting its shape. A mold is the opposite of a cast. The manufacturer who makes the molds is called the moldmaker. A release agent is typically used to make removal of the hardened/set substance from the mold easier.” (Wikipedia, Molding, 1/28/2011)
Recent US Patents
10/12/2010
7,811,078
Venting device for mold
Serener and Nitsch of Goodyear has developed blocking devices to prevent rubber flow from the rubber during gas venting using hollow tubes with slitted blocking caps. (RDC 1/6/2010)
8/3/2010
7,766,643
Moulding threaded articles
Zuffa has developed a mold for manufacturingthreaded caps andnecks for containers using removable mold sections that move in arched trajectories, whichlimitsmechanical motion and increases cycle efficiency. (RDC 10/1/2010)
5/19/2009
7,534,318
Method of producing textured mold-formed bodies, and mold-formed bodies manufactured according to the method
Buhrng et al of Benecke-Kaliko have developed a textured polyolefin, multilayered molded structure based on a top foil with a partially crosslinked polyolefin which is embossed and crosslinked with an electron beam.
5/12/2009
7,531,246
Core insert and method for manufacturing the same
Chen of Hon Hai Precision Industry of Taiwan has a core insert for injection molding based on mirror polished steel coated with multilayers of a nickel-phosphorus layer,a chromium layer, a chromium nitride layer, and a diamond-like carbon layer.