Abstract: The present invention provides a gypsum-based embedding material composition for casting useful for forming a rapid-heating type gypsum-based embedding material and a method for producing the same. The gypsum-based embedding material is formed of the gypsum-based powdery embedding material composition by adding a malaxation liquid into the composition and heating the mixture in a high-temperature furnace. The gypsum-based embedding material composition contains as main components, at least one co-pulverized material selected from a co-pulverized material of calcined gypsum and quartz, that of calcined gypsum and cristobalite, and that of calcined gypsum, quartz, and cristobalite. The composition further contains a powdery moisture-retaining component or a liquid moisture-retaining component having a low water content, and has an average particle diameter of 30 ?m or less.

Abstract: A cutting apparatus is provided. The cutting apparatus includes a cutter disposed in a conveying path for conveying a plate-shaped object and configured to cut the object, a downstream conveyor disposed downstream of the cutter in the conveying path and configured to convey the object, and a foreign-matter adhesion preventer disposed between the cutter and the downstream conveyor and configured to prevent foreign matter scattered by the cutter from adhering to the downstream conveyor.

Abstract: A fireproof covered structure for covering a penetration part formed in a fireproof beam of a wooden building to make the penetration part fireproof, wherein a tubular fireproof covering material is attached to the penetration part while covering an inner peripheral surface of the penetration part. The tubular fireproof covering material is formed by stacking a plurality of gypsum board pieces cut out from commercially available gypsum boards of thicknesses of 9.5 mm to 25.5 mm, in the thickness direction and unitarily connecting the gypsum board pieces. The tubular fireproof covering material is inserted into and attached to the penetration part such that a connecting portion That connects gypsum board pieces That are adjacent in the stacking direction is disposed at a boundary portion between a structural member and a covering member of the fireproof beam, or at a portion close to the boundary portion.

Abstract: An apparatus for inspecting plate-like bodies to inspect a side surface of a plate-like body with sheeted coating materials on a top side and bottom side of the plate-like body, is provided. The apparatus includes at least one light emitting unit configured to irradiate the side surface of the plate-like body with light. The apparatus includes at least one light receiving unit configured to receive light reflected with respect to the side surface of the plate-like body. The apparatus includes a conveying unit configured to move at least one among the light emitting unit and the plate-like body and to vary a position of the light on the side surface of the plate-like body, emitted by the light emitting unit.

Abstract: A penetration part fireproof covering material used when a penetration part covered for fireproof is formed in a fireproof beam that is a fireproof constructional member that constitutes a wooden building, wherein the penetration part fireproof covering material is formed to have a tubular shape by stacking a plurality of gypsum board pieces (13a) formed from gypsum boards in a thickness direction and unitarily connecting the plurality of gypsum board pieces. The penetration part fireproof covering material is formed to have the tubular shape by stacking the plurality of gypsum board pieces that preferably have an annular shape and are cut out from commercially available gypsum boards having thicknesses of 9.5 mm to 25.5 mm while fixing the plurality of gypsum board pieces to each other preferably using metal fasteners such as staples, and unitarily connecting the plurality of gypsum board pieces.

Abstract: A fire-resistant partition wall includes wall studs and first and second walls each including gypsum boards with vertical and lateral joints. The wall studs are on the back side of the vertical joints. A joint base member is provided at the lateral joints. The gypsum boards, the joint base member, and the wall studs are not screwed with a common screw, and (a) the gypsum boards are screwed to only the wall studs and are not screwed to the joint base member, and the joint base member is fixed to the lateral joint position by being inserted between the gypsum boards and the wall studs, or (b) the gypsum boards are screwed to the wall studs and to the joint base member with different screws, and the joint base member is fixed to the lateral joint position by being inserted between the gypsum boards and the wall studs.

Abstract: An object of the invention is to prevent differences in the flow rate and the specific gravity of a gypsum slurry from being caused between slurry discharge ports, to divide a current of the slurry into streams without a factor of stagnation of the slurry provided at a branch part, and also, to ensure a sufficient distance between the discharge ports. The slurry delivery conduit (10) has a rectilinear tube segment (14), a branch part (15) and branch tube segments (16). A tube-wall joint portion (20) of the branch tube segments configures a counter-flow splitting element (22) in a form of V-letter at the branch part. The slurry is introduced from a mixing area (51) into the rectilinear tube segment, which configures a straight rectilinear fluid passage. The rectilinear tube segment rectifies a flow of the slurry to be an axial or rectilinear current (S), and the axial or rectilinear current is split into branch streams (S1, S2) by the counter-flow splitting element.

Abstract: A fluidized-bed-type apparatus and method for treating gypsum, which activates or improves fluidity of gypsum powder to promote an effect of treatment of gypsum, such as modification or homogenization of the gypsum powder. The apparatus for treating gypsum includes a reactor vessel, a conditioned air supply port, a horizontal partition wall and a plurality of stationary vanes. The wall allows a conditioned air flow to flow upward into a reaction region. The vanes are arranged at an angular interval in a circumferential direction. A fluidized bed of calcined gypsum is provided in the vessel. The vane deflects the conditioned air flow flowing upward into the reaction region, toward a radially outward and circumferential direction of the reaction region. The calcined gypsum makes a saltational fluid motion or saltational movement in the vessel with the air flow.

Abstract: A partition wall has a structure with a wall end portion butted against another building structure and exposed to architectural spaces. An end post at the end portion of the wall is constituted from first and second end post elements, which are spaced apart from each other, so that a gap or an isolation zone interrupting a propagation of a solid vibration or insulating a path for propagating the solid vibration is formed between the first and second elements. An interior finishing panel for defining the architectural space on one side of the wall is fixed to the first element and the interior finishing panel for defining the architectural space on an opposite side of the wall is fixed to the second element.

Abstract: Provided are a heat-insulating and sound-absorbing material improved in construction workability, and a partition wall in which degradation in sound insulation performance is suppressed. The heat-insulating and sound-absorbing material 1 is comprised of an agglomerate of inorganic fibers, wherein the agglomerate has a density of 10 to 20 kg/m3 and the inorganic fibers of the agglomerate have a length-weighted average fiber diameter of 2.0 to 8.7 ?m, and wherein the agglomerate contains: 20 to 66% of inorganic fibers having a length-weighted average fiber diameter of less than 4.0 ?m; and 13 to 58% of inorganic fibers having a length-weighted average fiber diameter of 7.0 ?m or more. The partition wall comprises a hollow wall portion, and the above heat-insulating and sound-absorbing material installed in the hollow wall portion.

Abstract: A multitubular rotary heat exchanger has a stationary shielding unit. The shielding unit is positioned in close proximity to a tube plate outside a heating or cooling region. A stationary surface of the shielding unit is positioned in opposition to and in close proximity to an end opening of a heat transfer tube moving in an upper zone of the heating or cooling region, thereby transiently reducing or restricting the flow rate of the thermal medium fluid flowing through the heat transfer tube moving in the upper zone.

Abstract: A sampling apparatus is provided, which includes a pressing-up unit configured to press up a sheet piece that is being conveyed by a conveying unit, from a lower side of a conveyance course of the sheet piece to above the conveyance course; and a holding unit configured to hold the sheet piece pressed up by the pressing-up unit.

Abstract: A calcined gypsum treatment apparatus has an agitating type of cooler provided with a cooling region for cooling the calcined gypsum, and a moisture supplying device for incorporating moisture into the calcined gypsum. The moisture supplying device includes a humid gas-feeding port which introduces humid gas including moisture or steam, directly into the cooling region. The calcined gypsum is introduced through a calcined gypsum introduction port into the cooling region, and the moisture is incorporated into the calcined gypsum to modify the calcined gypsum. The humid gas-feeding port is positioned in vicinity to the calcined gypsum introduction port so as to allow the spouted or delivered flow of the humid gas to be brought into contact with the calcined gypsum immediately after introduced into the cooling region.

Abstract: A gypsum panel includes a gypsum core containing a termiticide with poor water solubility, wherein the gypsum core has a first end region, a center region, and a second end region having an equal thickness and extending along a thickness direction from one surface side to another surface side, the termiticide is contained in each of the first end region, the center region, and the second end region, and a content of the termiticide in the center region is lower than a content of the termiticide in the first end region and in the second end region.

Abstract: A fireproof covered structure for covering a penetration part formed in a fireproof beam of a wooden building to make the penetration part fireproof, wherein a tubular fireproof covering material is attached to the penetration part while covering an inner peripheral surface of the penetration part. The tubular fireproof covering material is formed by stacking a plurality of gypsum board pieces cut out from commercially available gypsum boards of thicknesses of 9.5 mm to 25.5 mm, in the thickness direction and unitarily connecting the gypsum board pieces. The tubular fireproof covering material is inserted into and attached to the penetration part such that a connecting portion That connects gypsum board pieces That are adjacent in the stacking direction is disposed at a boundary portion between a structural member and a covering member of the fireproof beam, or at a portion close to the boundary portion.

Abstract: A multitubular rotary heat exchanger has a stationary shielding unit. The shielding unit is positioned in close proximity to a tube plate outside a heating or cooling region. A stationary surface of the shielding unit is positioned in opposition to and in close proximity to an end opening of a heat transfer tube moving in an upper zone of the heating or cooling region, thereby transiently reducing or restricting the flow rate of the thermal medium fluid flowing through the heat transfer tube moving in the upper zone.