摘要:
Es werden ein Verfahren und eine Vorrichtung zur Herstellung von Polyurethanformkörpern beschrieben, wobei der Nachdruck vor Beendigung der Formfüllung einsetzt. Dabei wird während der erforderlichen Überfüllung der Form mit Reaktionsgemisch mindestens eine Formhälfte gegen vorgespannte Federelemente angehoben.
摘要:
The present invention relates to a sliding member formed of a synthetic resin composed mainly of a polyethylene, said sliding member comprising a molded piece of a polyethylene having a viscosity-average molecular weight of 500,000 to 6,000,000 inclusive, having a low coefficient of friction and excelling in both its own wear resistance and its property of preventing the abrasion of an associated member.
摘要:
Embodiments of the present invention teach a molding apparatus for producing a molded article from a molding material. The molding apparatus comprises an inner core ( 108) and an outer core (110) for defining a portion of a molding cavity ( 106) for defining the molded article; the inner core ( 108) including a compensator (120), the compensator (120) being configured to: retract to a retracted position responsive to the pressure of the molding material being injected into the molding cavity (106); and extend to an extended position responsive to the shrinkage during solidification of the molding material in the molding cavity.
摘要:
The present invention relates to a sliding member formed of a synthetic resin composed mainly of a polyethylene, said sliding member comprising a molded piece of a polyethylene having a viscosity-average molecular weight of 500,000 to 6,000,000 inclusive, having a low coefficient of friction and excelling in both its own wear resistance and its property of preventing the abrasion of an associated member.
摘要:
The present invention relates to a sliding member formed of a synthetic resin composed mainly of a polyethylene, said sliding member comprising a molded piece of a polyethylene having a viscosity-average molecular weight of 500,000 to 6,000,000 inclusive, having a low coefficient of friction and excelling in both its own wear resistance and its property of preventing the abrasion of an associated member.
摘要:
The slider consists of an injection molded product or polyethylene having a viscosity average molecular weight of 500,000-6,000,000. Slider has a low coefft. of friction and both excellent abrasion resisting characteristics and excellent characteristics of preventing another material from being worn out. @(81pp Dwg.No.0/11).
摘要:
Disclosed is an apparatus for manufacturing a resin molded article for an optical element, said resin molded article being formed by injecting a molten resin into a cavity, and having a hollow section inside. The apparatus has: a pressurized fluid injecting means, which forms the hollow section by injecting a pressurized fluid into the molten resin injected into the cavity; and a pressing means which presses a movable part in the same direction as the molding die clamping direction. The movable part is moved with respect to a first molding die or a second molding die, in the opposite direction to the molding die clamping direction against the pressing force applied by means of the pressing means, with a pressure increase in the molding dies, said pressure increase being caused by the injection of the pressurized fluid into the cavity. The movable part is moved by the pressing force with respect to the first molding die or the second molding die, in the same direction as the molding die clamping direction, with a pressure reduction in the molding die, said pressure reduction being caused by discharge of the pressurized fluid.
摘要:
The slider consists of an injection molded product or polyethylene having a viscosity average molecular weight of 500,000-6,000,000. Slider has a low coefft. of friction and both excellent abrasion resisting characteristics and excellent characteristics of preventing another material from being worn out. @(81pp Dwg.No.0/11).
摘要:
This invention relates to a slider of a synthetic resin containing polyethylene as a main component. characterized in that the slider consists of an injection molded product of polyethylene having a viscosity average molecular weight of 500.000-6,000,000, the slider having a low coefficient of friction and, moreover, both excellent abrasion resisting characteristics and excellent characteristics of preventing another material from being worn out.