Mold useful for injection molding of plastics, and methods of production and uses thereof

Access full-text files




Harris L. Marcus
Joseph J. Beaman, Jr.
David L. Bourell
Joel W. Barlow
Neal K. Vail
James R. Tobin
Richard H. Crawford, Jr.
Balasubramanian Badrinarayan

Journal Title

Journal ISSN

Volume Title


United States Patent and Trademark Office


A mold useful for injection molding, comprising: a porous network of metal and oxidized metal and a cured epoxy resin dispersed in the porous network. The mold can be prepared by a process comprising the sequential steps of (a) forming a mixture of a metal powder and a polymer binder; (b) heating the mixture at a temperature in the range from about C. to about C. to remove a majority of the polymer binder from the mixture; (c) heating the mixture resulting from step (b) at a temperature greater than about C. and less than the melting point of the metal in the presence of oxygen to oxidize at least a portion of the metal to form a self-adhering porous network of metal and oxidized metal; (d) contacting the self-adhering porous network with an epoxy resin to fill at least a portion of the porous network with epoxy resin; and (e) curing the body resulting from step (d) to form the mold. The shape of the mold can be performed by selective laser sintering of the mixture.



LCSH Subject Headings