摘要:
A silicon seed rod assembly used for producing polycrystalline silicon by means of a vapor deposition method includes two rod-shape silicon seed rods; and a silicon connection member bridging the silicon seed rods, wherein an opening-end peripheral edge of a through-hole on one side surface of the connection member is sharper than that on the other side surface thereof, and an opening-end peripheral surface on the one side surface thereof is formed into a flat contact surface disposed in a direction perpendicular to a perforation direction of the through-hole, and wherein a upper end portion of the silicon seed rod is inserted into the through-hole so that the contact surface comes into contact with the support surface of the silicon seed rod.
摘要:
A polycrystalline silicon manufacturing apparatus efficiently produces high-quality polycrystalline silicon. There is provided a polycrystalline silicon manufacturing apparatus, in which a plurality of gas supplying ports 6A for ejecting raw gas upward in a reactor 1 and gas exhausting ports 7 for exhausting exhaust gas after a reaction are provided on an inner bottom of the reactor 1 in which a plurality of silicon seed rods 4 are stood, the silicon seed rods 4 are heated and the polycrystalline silicon is deposited from the raw gas on the surfaces. The apparatus includes gas distributing tubes 9 that are respectively connected to the gas supplying ports 6A and respectively supply the raw gas to the gas supplying ports 6A, valves 21 that are provided on at least the gas distributing tubes connected to the gas supplying ports 6A adjacent to a center of the reactor 1 and open or close conduit lines of the gas distributing tubes 9, and a valve controlling device 22 that is connected to the valves 21 and controls the conduit lines to be closed for a predetermined time at an early stage of the reaction.
摘要:
A mis-convergence correction device includes a first controlled coil unit, a second controlled coil unit, a controlling coil unit, and a coil holder. The first controlled coil unit includes first and second drum cores and a first controlled coil. Each of the first and second drum cores has circular flanges at its opposite ends respectively. The first controlled coil is provided on a portion of the first drum core between its flanges and also a portion of the second drum core between its flanges. The second controlled coil unit includes third and fourth drum cores and a second controlled coil. Each of the third and fourth drum cores has circular flanges at its opposite ends respectively. The second controlled coil is provided on a portion of the third drum core between its flanges and also a portion of the fourth drum core between its flanges. The controlling coil unit is located between the first and second controlled coil units. The coil holder accommodates the first and second controlled coil units and the controlling coil unit. The coil holder has first and second halves. The first half has a hold portion for each of the flanges of the first, second, third, and fourth drum cores. The hold portion has first and second inclined surfaces being non-parallel to each other. The first inclined surface contacts the related flange only at a first point as viewed in a cross-section of the related flange. The second inclined surface contacts the related flange only at a second point as viewed in the cross-section of the related flange. The first and second points are separate from each other.
摘要:
A side airbag for enhancing protection of a shoulder area of a vehicle occupant having an airbag (10) which deploys beside an occupant toward the vehicle front, and an inflator (20). Before deploying, the airbag (10) is in a state having: an overlapping part (12) formed by overlapping a portion near an end part by accordion-folding or rolling; a folded-back part (14) on an inner side of the overlapping part (12) in a vehicle width direction and extended toward the front of the vehicle and folded back toward the rear of the vehicle; and a bent part (16) formed by bending a portion of the folded-back part (14), protruding from the overlapping part (12) toward the front of the vehicle toward an outer side in the vehicle width direction and covering at least part of the overlapping part (12).
摘要:
A method for manufacturing polycrystalline silicon with high quality by effectively preventing undesired shape such as giving an rough surface to silicon rods or an irregularity in diameter of the silicon rods. The method for manufacturing polycrystalline silicon includes: an initial stabilizing step of deposition wherein a velocity of ejecting the raw material gas from the gas ejection ports is gradually increased; the shaping step wherein first the ejection velocity is increased at a rate higher than that in the stabilizing step and then the ejection velocity is gradually increased at a rate lower than the previous increasing rate; and a growing step wherein, after the shaping step, the ejection velocity is made slower than that at the end of the shaping step until the end of the deposition.
摘要:
The reactor for polycrystalline silicon is a reactor for polycrystalline silicon in which a silicon seed rod installed inside the reactor is heated by supplying electricity, a raw material gas supplied inside the reactor is allowed to react, thereby producing polycrystalline silicon on the surface of the silicon seed rod, and specifically, the reactor for polycrystalline silicon is provided with a raw material gas supply port installed on the bottom of the reactor and a raw material gas supply nozzle attached to the raw material gas supply port so as to be communicatively connected and extending upward, in which the upper end of the raw material gas supply nozzle is set to a height in a range from −10 cm to +5 cm on the basis of the upper end of the electrode which retains the silicon seed rod.
摘要:
This engaging member includes a male part and a female part each of which is capable of engaging with each other, in which each of the male part and the female part has a welded part to a main body of a bag and a part other than the welded part, at least the welded part is formed by a resin composition including (A) a polypropylene type resin having a maximum melting peak temperature measured by a differential calorimeter of not more than 145° C., and a melt flow rate ranging from 0.5 g/10 min. to 20 g/10 min., and (B) a polybutene type resin having a maximum melting peak temperature measured by a differential calorimeter of not more than 130° C., and a melt flow rate ranging from 0.1 g/10 min. to 20 g/10 min.
摘要:
A polycrystalline silicon rod according to present invention has a structure for hanging of polycrystalline silicon rods to each other end-to-end, so that the efficiency of melting polycrystalline silicon can be increased considerably. A polycrystalline silicon rod obtained by entirely or partially removing a peripheral portion from the rod to leave a central portion, and processing the central portion, preferably, the peripheral portion is removed by grinding in an amount corresponding to 10 to 60% of the diameter of the rod, and then subjected to groove-forming processing. This makes annealing unnecessary.
摘要:
[PROBLEM] To provide a interlocking device and a packaging bag therewith wherein the interlocking device has sufficient heat stability against retort sterilization treatment and deformational change after said treatment small enough not to be impaired its reopenability. [SOLUTION MEANS] A interlocking device having a pair of male and female profiles wherein: said male and female profiles have non-heat-sealing part to bag body and heat-sealing part to bag body; where said non-heat-sealing part consists of polypropylene type resin composition (A) having main melting peak temperature observed by differential scanning calorimetry less than 150 degree C. and the melt flow rate at 230 degree C. from 0.5 g/10 min to 20 g/10 min; and said heat-sealing part consists of polypropylene type resin composition (B) having main melting peak temperature observed by DSC, not less than 140 degree C. and the melt flow rate at 230 degree C. from 0.1 g/10 min to 20 g/10 min; and the main melting peak temperature of polypropylene type resin composition (B) is at least 10 degree C. lower than that of polypropylene type resin composition (A), and a packaging bag with interlocking device wherein the aforesaid interlocking device is heat-sealed to the bag body via said heat sealing part.
摘要:
A deflection yoke 200 is comprised of a pair of separators 1, 1 formed in a funnel shape, having a large brim and a small brim. A first flange 1a is formed on the small brim, and a second flange 1b is formed on the large brim. A substrate 5 is held by at least one of the first flange and the second flange. A protective cover 26 is provided for protecting the substrate independently from the substrate by being held to the first flange and the second flange.