Abstract:
A method of manufacturing a ferroelectric memory includes: (a) stacking a lower electrode layer, a ferroelectric layer, and an upper electrode layer on a base in that order to form a ferroelectric laminate; (b) patterning the ferroelectric laminate to form a ferroelectric capacitor; (c) forming a first barrier film which covers the ferroelectric capacitor by physical vapor deposition (PVD); and (d) forming a second barrier film which covers the first barrier film by chemical vapor deposition (CVD).
Abstract:
A reclaiming machine for scraps of expanded foam thermoplastic material including an electrical source, a housing having a first and second material feeding poet formed therein, a first and second cylinder positioned within the housing and in communication with the first and second port, respectively, a first and second threaded screw shaft rotatably mounted in the first and second cylinder, respectively, wherein the thread diameter of the first and second screw shafts increase in a direction away from the first and second port, respectively, a mechanism operatively associated with the first and second shafts for selectively driving the first and second shafts; a third cylinder positioned between the first and second cylinder and forming a discharging port located adjacent the first and second material feeding port, first and second tubes interconnecting the first and second cylinders to the third cylinder at an end thereof opposite the first and second port; and band heaters enclosing an external wall of the first, second and third cylinders, each of the band heaters being separately connected to the electrical source.
Abstract:
A method for manufacturing of a silicone rubber base composition in a mass-like form, comprises:(A) preparing a freely flowable powdered silicone rubber composition comprising(a) a cross-linkable polydiorganosiloxane with a viscosity of at least 1.times.10.sup.5 mPa.s at 25.degree. C. and(b) an inorganic filler, and(B) continuously kneading and massing the powdered silicone rubber composition in a multiple-stage siding shear-type single-screw extruder.This method provides for continuous preparation of a silicone rubber base compound without the use of a dual-screw mixer-extruder having a large length to diameter ratio, without abrasive wear of screws and cylinders with such inorganic fillers as diatomaceous earth power, quartz or a similar large-grain and hard powders, without blackening of the mixed silicone rubber composition, and without production problems associated with the use of large quantities of fumed silica, sedimentary silica, or a similar reinforcing silica.
Abstract:
A device for changing a wire netting in a filter device for synthetic resins comprising a die body fixed in contact with an extruding port of an extruding machine, the die body having a first hole for change drilled therein, a guide inlet communicating with the first hole for change and an extruding port, a pair of second holes for screening drilled in the die body respectively at both sides of the hole for change, a pair of guiding pipes respectively communicating with the pair of second holes for screening, a pair of exhaust guide ways respectively communicating with the pair of second holes, a pair of valve guide ways respectively having a larger diameter than those of the pair of exhaust guide ways and respectively communicating with the pair of exhaust guide ways and an exhaust port, one end of which is opened and the other end of which communicates with the center and connecting portion of the pair of valve guide ways, a valve for changing flow which has a guide opening through which the guide inlet communicates with one of the pair of guide pipes, the valve for changing flow being inserted into the hole for change free to rotate therein, a cylinder strainer surrounded by a wire netting respectively inserted into the pair of second holes for screening and a choke valve inserted into the pair of valve guide ways free to slide therein.
Abstract:
A foreign material removing device in a synthetic resin reclaiming machine including an extruder having a screw shaft, a filter cylinder connected to the extruder, a resin filter mounted within the filter cylinder so as to form a resin chamber therebetween, a scraper shaft positioned within the filter cylinder and including projected strips as scraper which protrude aslant to the axis of the scraper shaft such that the strips contact the inner surface of the filter and interconnect with the screw shaft, a body fixed to the filter cylinder which includes a first guide hole, one end thereof being connected to the inside of the filter cylinder, an ejecting port, and a second guide hole disposed in an orthogonal direction with respect to the axis of the scraper so as to connect the first guide hole to the foreign material ejecting port further including a plurality of resin passages communicating with the resin chamber, a plurality of dies fixed to the body which include connecting passages for ejecting resin and a plurality of nozzle holes connecting to the resin ejecting passages, a squeezing piston connected to the body which reciprocates within a sliding guide hole, a slide piston operatively associated with the squeezing piston for contacting the squeezing piston, and a spring member for biasing the slide piston toward the squeezing piston.
Abstract:
A highly productive, continuous method for the production of room-temperature-curable organopolysiloxane compositions is obtained by continuously feeding 100 parts by weight of a diorganopolysiloxane with a viscosity at 25.degree. C. of 0.1 to 500 Pa.s that contains at least 2 silicon-bonded hydroxyl groups or hydrolyzable groups in each molecule; 1 to 30 parts by weight of an organosilane that contains at least 2 silicon-bonded hydrolyzable groups in each molecule, or the partial hydrolysis condensate thereof; 1 to 200 parts by weight of an inorganic filler in powder form, and 0 to 10 parts by weight of a cure-accelerating catalyst into a continuous mixing apparatus having starting material feed openings installed at its top, a discharge opening installed at its bottom, and a rotating disk installed within a casing and are therein mixed by the rotation of the said rotating disk, and in that the resulting mixture is thereafter continuously introduced into a vacuum mechanism- equipped degassing apparatus in which the water fraction present in the said mixture is removed under reduced pressure.
Abstract:
A device for dealing with chips and cut ends during the processing of plastics and synthetic resins, comprising a feeding chamber having a front chamber and a rear chamber, the front chamber having a circular portion and the rear chamber having a circularly shaped portion at the central part thereof, the upper portion of the feeding chamber having a feeding inlet. A cutting blade is fixed on the center line of the feeding chamber at the upper end of the circular portion of the front chamber, and a rotary shaft is mounted horizontally on the center line of the circular portion of the front chamber and the circularly shaped portion of the rear chamber. A plurality of wheel blades is fixedly separated on the rotary shaft, and a plurality of stopping materials is positioned respectively between the plurality of wheel blades, the lower portions of the plurality of stopping materials being fixed respectively at the lower portion of the rear chamber. A melting furnace having the shape of a V with respect to the both sides thereof is fixed at the lower portion of the feeding chamber, and an extruding cylinder of an extruding machine is mounted at a lower portion opening of the melting furnace. The V-shaped melting furnace has a plurality of fins mounted vertically to the both inner sides thereof, the width of the fins increasing with decreasing height. The extruding cylinder includes the screw of an extruding machine and the upper inner wall surface of the extruding cylinder coincides with a surface defined by the lower edges of the plurality of fins.
Abstract:
A method for continuous preparation of a high consistency or liquid silicone rubber base does not cause abrasive wear of the extruder screw and of the extruder cylinder or blackening of the silicone rubber base even when the latter is admixed with such fillers as an inorganic filler in the form of a diatomaceous earth powder, quartz or a similar large-grained and hard substance, or with a fumed silica, sedimentary silica, or a similar reinforcing silica filler. The method comprises continuously kneading the following components in a multiple-stage shear type single-screw extruder: (A) a freely-flowable powdered silicone rubber mixture having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (b) an inorganic filler, and (B) a high consistency silicone rubber base having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (c) a reinforcing silica filler, or a liquid silicone rubber base having its main components in the form of (d) a cross-linkable polydiorganosiloxane with a viscosity below 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (c) a reinforcing silica filler.
Abstract:
The present invention relates to a method for the continuous preparation of heat-vulcanizing silicone rubber compounds. The method comprises continuous feeding of (A) 100 weight parts polydiorganosiloxane gum, (B) 5 to 100 weight parts reinforcing filler, and (C) up to 30 weight parts processing aid to a co-rotating twin-screw continuous compounding extruder. The components (A), (B), and (C) are continuously mixed in the extruder at a temperature in a range of about 200.degree. C. to 300.degree. C. The mixed components are then discharged, forming an extrudate. The extrudate is fed continuously to a counter-rotating twin-screw continuous compounding extruder, wherein the extrudate is continuously heat-treated at a temperature in a range of 150.degree. C. to 300.degree. C., forming the silicone rubber compound, which is then discharged from the counter-rotating twin-screw continuous compounding extruder.
Abstract:
An unmanned pelletizing device for plastic material for preventing the breakage of strands of the plastic material formed between a cooling roll and a pinch roll. The cooling roll is partially submerged in a tank of cooling water. A cutter includes a fixed knife having a plurality of grooves formed therein for registration with the plastic strands.