A method of molding a layer around a body within a mold, in which the body is positioned within a mold cavity defined by opposing mold portions of the mold, to leave a cavity space between the body and the mold portions at least partially surrounding the body. Layer material is injected into the cavity...http://www.google.es/patents/US6319451?utm_source=gb-gplus-sharePatente US6319451 - Method of molding a layer around a body
