Abstract: A method of molding a plastic resin having for its object to enable the filling or spreading speed of a molten resin in a mold to be controlled in compliance with the shape of an article to be molded by changing the opening and closing speed of the mold or the injecting speed of the molten resin in an injection unit in compliance with the amount of the molten resin charged into the mold or the amount of the molten resin injected by the injection unit so that a stable molded article can be produced in a short time even in case the shape of a product to be molded is changed, and an injection-compression molding machine constructed to achieve the molding method.

Abstract: A molding method in an injection-compression molding machine provided with an opening/closing valve between an injection unit and a metal mold, in which in order to make a density of molten resin uniform for resulting in production of stable molded articles, before the molten resin is injected into the metal mold, the aforementioned valve is closed to carry out preliminary pressing within the injection unit, and thereafter pressing on the molten resin is carried out within the metal mold during injection or after injection, as well as a molding apparatus for achieving the above-mentioned method. This molding apparatus includes the valve (40) disposed so as to be freely opened and closed in the flow passageway (46) of the molten resin provided between the injection unit (10) and the metal mold (30) for effecting blocking or change of a cross-section area of the above-mentioned flow passageway.

Abstract: From roasted products of used catalysts from hydrotreatment desulfurization of petroleum, valuable molybdenum, vanadium, cobalt and nickel are recovered easily and a high percent recovery by means of a combination of simple chemical procedures and also inexpensive chemicals. The recovered metal components can be reused for preparing new catalysts and the like.

Abstract: A molding machine for producing products of a rubber-like resilient material, particularly oil seals in which a first mold part is stationarily supported in axial spaced relation to a main base, a base between the main base and first mold part is axially movable toward and away from the first mold part and supports a second complementary mold part, a holder between and axially spaced from the first and second mold parts is mounted for limited axial movement and rotary movement in a plane parallel to the first and second mold parts, with the holder carrying two diametrically opposite further mold parts spaced apart an equal distance from the axis of the rotary movement and one of the further mold parts being in substantially registry with the first and second mold parts so that movement of the base relative to the holder brings the second mold part into operative relation to the one further mold part and continued movement of the movable base moves the holder toward the first mold part until the first mold par

Abstract: Device for producing and adjusting the feeding stroke of a transfer feeder for use in a transfer press which has a carrier for mounting thereon a pair of parallelly spaced transfer bars extending in the longitudinal direction of a working table of the press. The carrier is reciprocally moved along a pair of guide rods extending parallel to the transfer bars by the action of a transmitting mechanism connected to a drive source of the press.