Abstract: A clean room shoe article, e.g., shoe, boot, safety shoe, safety boot. The article has a sole region. The article has an upper particle free polymer material having a toe region and an ankle region. The upper particle free polymer material is coupled to the sole region. The upper particle free polymer material is capable of enclosing a foot of a human user. The toe region houses an entirety of toes of the human user. The article has a steel toe housing member enclosing and protecting the entirety of the toes of the human user. The article has an enclosure provided in the toe region of the upper particle free polymer material. The enclosure is adapted to house the steel toe housing member. A sealing region is provided within a vicinity of the enclosure. The sealing region is adapted to maintain the steel toe housing member within the enclosure and is also adapted to open and remove the steel toe housing member from the enclosure provided in the toe region of the upper particle free polymer member.

Abstract: A material melting device of metal injection molding machine comprises a main feeding cylinder; a plurality of preheating feed cylinders parallel arranged at a lateral side of a main feeding cylinder of a metal injection molding machine; a plurality of material outlets formed at a side of each preheating feed cylinder. The material outlets are communicated to the main feeding cylinder through the guide tubes. Thereby, an inner side of the preheating feed cylinder is pre-heated so as to get preheated grains by adjusting the preheating screw rods in the preheating feed cylinder. Moreover, the preheating feed cylinders can be replaced by feeding funnels and the guide tubes are replaced by heating pipes.

Abstract: A material melting device of metal injection molding machine comprises a main feeding cylinder; a plurality of preheat feed cylinders parallel arranged at a lateral side of a main feeding cylinder of a metal injection molding machine; a plurality of material inlets formed at a side of each preheat feed cylinder. The material inlets are communicated to the main feeding cylinder through the guide tubes. Thereby, an inner side of the preheat feed cylinder is pre-heated so as to get preheat grains by adjusting the preheat screw rods in the preheat feed cylinder. Moreover, the preheat feed cylinders can be replaced by feeding funnels and the guide tubes are replaced by heating pipes.

Abstract: An air releasing check structure of a metal injecting machine has a seat rod installed between a rear seat of a feeding screw rod and the extruding head at a front end of the front section. A periphery of the seat rod is enclosed by a check toggle. If the material to be ejected has bubbles so that it is not extruded effectively, the bubbles will flow to the exhausting grooves of the check toggle. Then the bubbles are drained out. Thereby, the bubbles in the material are vented out so that the material becomes dense. When the material becomes dense with high tension, the pressure of material will be greater than the force for buckling the elastic toggles so that the elastic toggles expand. As a result, the elastic toggle will further isolate the exhausting groove. Thereby, the material moves forwards to be ejected from the extruding head.