Air dispersion of mineral fibres in production of ceiling tiles

FIELD: construction; acoustics.

SUBSTANCE: invention relates to production of acoustic ceiling tiles based on mineral wool. Method of producing diluted aqueous suspension for water hardening of main mat for acoustic ceiling tiles, includes delivery of a bale of pressed mineral wool with density of at least 8 pounds per cubic foot (approximately 0.13 g/cm3) on section for unpacking bales, disconnection of attachment holding bale in compressed state, mechanical separation of fibres from bale of mineral wool by mechanical means arranged with possibility of dispersion of fibres to ensure overall uniform density of less than 2 pounds per cubic foot (approximately 0.032 g/cm3), until passage of fibres via inlet of tank and direction of separated mineral fibre into mixing tank for bringing into contact with binding agent suspended in water.

EFFECT: technical result consists in improvement of acoustic characteristics, high mechanical properties of tiles.

4 cl, 3 dwg

 



 

Same patents:

FIELD: construction.

SUBSTANCE: invention relates to the field of development of structures of heat insulation of walls in construction and repair of buildings, designed for reduction of heat arrival from a room into wall thickness, as heat insulation panels are installed inside the room, or to protect walls against impact of negative atmospheric processes, as panels are installed at the outer side of the building. The panel for additional heat insulation of walls comprises sheets forming face and rear planes of the panel, with air layer between them, each of limiters providing for preservation of minimum thickness of air layer, and also the possibility of multiple dismantling and installation of the entire panel or only its face plane, is made in the form of at least four cells connected into a single structural part and having in the central part, where stiffening ribs of cells meet, a channel for insertion of a fastening part, designed for attachment of the face plane to the limiter, and stiffening ribs of each of the limiters are sunk into the mass of plastic material, from which they form a sheet forming a rear surface of the panel before the start of its hardening, as a result of which they produce a solid joint of each limiter with the rear plane of the panel made as capable of attachment of the wall using fastening parts, besides, sheets of panels are structurally grouped in packages of eight pieces with a stiff joint between them by rear and face planes and the ninth in the centre, which is capable of horizontal displacement relative to the wall due to attachment of a vibrator with a drive and a displacement speed controller to its face surface, a temperature controller connected with an air temperature sensor, arranged inside the panel, at the same time the temperature controller includes blocks of comparison and setting, electronic and magnetic amplifiers, an unit of non-linear feedback, and a displacement speed controller is made in the form of an unit of powder electromagnetic couplings, besides, the fastening part is made in the form of a rod with double-sided threaded joint, besides, with one end the rod is rigidly connected to the fastening channel in the central part of the limiter, and with the other end it is connected with the face plane of each panel sheet as capable of free joint and stiff joint, besides, on the rear surface of panel sheets grouped structurally as eight pieces in each group, there are curvilinear grooves with the opposite direction of tangents on each pair of panel sheets, at the same time on the first sheet of the pair the tangent of the curvilinear groove has a clockwise direction, and on the second sheet of this panel pair the tangent of the curvilinear groove has a counterclockwise direction. At the same time the displacement speed controller is connected to a moisture controller, comprising a moisture sensor, arranged inside the panel, besides, the moisture controller includes blocks of comparison and setting, electronic and magnetic amplifiers, an unit of non-linear feedback, besides, the magnetic amplifier is connected with a displacement controller in the form of an unit of powder electromagnetic couplings, and the moisture sensor is connected to the block of comparison.

EFFECT: maintenance of normalised strength parameters of barrier structures and panels for additional heat insulation of walls under changing weather and climate conditions of building operation by automated control and regulation of ventilated air moisture.

4 dwg

Wall panel // 2541686

FIELD: construction.

SUBSTANCE: invention relates to the field of construction and can be used for design of load-bearing enclosing structures of civil and industrial buildings. The wall panel includes inner and outer support layers and the intermediate insulating layer. The intermediate insulating layer is made as a heat-insulating material filling the interior cavities of ceramic or slag glass ceramic tubes arranged in parallel with respect to each other, and the outer and inner support layers are made from cured slag cast during the manufacture on the outer surface of said ceramic or slag glass ceramic tubes.

EFFECT: improvement of insulation, as well as reduction of the cost of the structure, reduction of installation cost and complexity of the design.

4 dwg

FIELD: transport.

SUBSTANCE: invention relates to ship building, particularly, to ship compartment finishing. Layout of compartment sealing panels onto joint comprises clamping channel secured by fastener to sealing panels and decorative channel. Fastening of decorative channel is executed with the help of "Velcro" textile fastener with one half glued to clamping section and another half secured to decorative channel. Note here that both decorative and clamping channels follow the joint geometry event and angles.

EFFECT: higher reliability of fastening.

5 dwg

FIELD: automobile production.

SUBSTANCE: manufacturing method of sandwich panels containing at least one layer of a warmth-keeping material, mainly foamed plastic and a reinforcing layer from glass fabric involves connection of the reinforcing layer and foamed plastic by means of a glued connection. Besides, there additionally used is at least one matrix form, the working surface of which is pre-treated with a releasing agent for resins; then, the working surface is filled with resin, mainly epoxy resin, with a layer of preferably 0.5-1.5 mm and left till it is dried; after that, an additional reinforcing layer in the form of a glass fibre matt layer and a reinforcing layer in the form of a glass fabric layer are laid in turns onto the resin layer; after that, the glass fibre matt and glass fabric layers are soaked with a self-expanding polyurethane adhesive with microspheres and the warmth-keeping material is laid onto the glass fabric layer; then, the layers being attached are pressed and dried, and mainly under pressure by means of a vacuum table; after complete drying of the layer the matrix form is removed.

EFFECT: improving heat-insulation and strength characteristics.

6 cl, 1 dwg

Structural panel // 2534289

FIELD: construction.

SUBSTANCE: invention relates to building construction and can find application during the construction of bearing-wall houses. Structural panel includes the reinforcing elements made of longitudinal reinforcing concrete bars, embedded in constructive heat-insulating material of panel filling and mounted at the boundaries of extreme quarters of width of the panel cross section, designed of channel section and having openings in the wall, through which transverse reinforced concrete bars of rectangular cross section pass through alternately in the level of top and bottom, the ends of which are attached to the extreme longitudinal reinforced concrete of rectangular cross section; in this case the height of holes in the walls of bars of channel section is equal to the triple thickness of transverse bars of rectangular cross section, in this case the holes in the walls of reinforcing concrete bars of channel section are made in the form of four-sided truncated pyramid, besides for each pair of reinforcing concrete bars of channel section, the smaller base of truncated quadrilateral pyramid is arranged for the first from pair from the outer side toward the pass of reinforced concrete bar of rectangular cross section, and for the second - from the inside, moreover, taper angle of the truncated pyramid is of 812 degrees. Panel is equipped with bimetal strips, which are installed in the joints of longitudinal and transverse reinforced concrete bars of rectangular cross-section, in this case the material of bimetal from side of longitudinal reinforced concrete bars has the thermal-conductivity factor 2.0-2.5 times higher, than the thermal-conductivity factor of the material from side of transverse reinforced concrete bars.

EFFECT: maintenance of thermal-insulating properties of structural panel when exposed to freezing temperatures of the environment by eliminating the effects of "cold bridges" by creating the zone of high thermal resistance in joints of longitudinal and transverse reinforced-concrete bars.

4 dwg

Spacer // 2533784

FIELD: construction.

SUBSTANCE: invention relates to spacer, preferably for fabrication of wall panels or sandwich wall panels. A hollow or sandwich wall panel comprises at least two located spaced wall panels, at least one of which contains concrete and between which a spacer at least partially passes, and this spacer contains at least three rods, each of which contains at least two bearing parts formed by located opposite to each other rod end parts, meanwhile the rods are rigidly connected to each other at the section located at a distance from the rod end parts, and the bearing parts of the rods are spaced and thus form two bearing planes located opposite to each other, thus the rods form between them a sharp angle, and at least two, preferably three rods are contacting. Also the spacer is described, as well as the version of the wall panel and the method of its manufacture.

EFFECT: improvement of strength of wall panels, improvement of accuracy of their manufacture.

15 cl, 9 dwg

FIELD: construction.

SUBSTANCE: high-speed method of manufacture of building products with high void ratio provisions the volumetric vertical moulding of building products at separate forced filling of meshes with heterogeneous mixes with alternating use of vane mixers with slotted gates. Some meshes of the moulds with partitions are filled, while others are overlapped. And the meshes intended for formation of longitudinal voids, are temporarily filled with neutral cementless pulpous mix, and the meshes intended for moulding of products, are filled with liquid multicomponent concrete mix. During extraction of partitions from the mould give they are oscillated at high frequency in vertical direction, and after drying of products they are washed from pulp. Building products, such as wall panels obtained by the given method, have longitudinal voids and at least one channel intended for moulding of a concrete column of a monolithic frame of a building, and are designed with stops on side walls for installation of window openings. The process line for manufacture of building products with high void ratio is also described.

EFFECT: increase of productivity of the process line, increase of rate and quality vertical moulding and of building products from heterogeneous mixes, simplification of manufacture, tumbling and transportation of products.

27 cl, 101 dwg

FIELD: construction.

SUBSTANCE: method of explosion protection of industrial buildings is that the installation of explosion-proof elements is carried out in the envelope of the buildings, where the explosive and flammable equipment works; explosive and flammable equipment is installed on the building foundation, and in the lateral and upper fences of the industrial building the explosion-proof elements are installed, besides the explosion-proof elements in the form of safety breaking structures of a building fence are mounted for the lateral fences, and for the upper fences - in the form of explosion-proof plates on the roof or the building camp ceiling with the explosive objects located therein.

EFFECT: improvement of reliability of personnel work in explosion-hazardous premises.

3 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to woodworking industry and may be used for making slats. Said composition includes for inner layer 10-40% of rotten blank waste chips and 20% of wastes after roundup lumber chips as well as 40-70% of chips produced from pulp chips of PS grade with the help of binder based on low-molecular urea-formaldehyde resin and emulsion. Note here that said binder consists of low-molecular urea-formaldehyde resin of 60-62% concentration and aqueous solution of ammonia chloride of 20% concentration. Emulsion consists of the following components, in wt %: paraffin - 21, brown coal wax - 14, emulsifier - 1, water - 64.

EFFECT: lower material input, power savings, higher efficiency of equipment, lower toxicity.

1 tbl, 1 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of construction materials, particularly, to light three-ply boards including foamed polymer filler. Proposed board comprises top and bottom plies with filler glued in place there between. Filler reinforced discrete elements shaped to stiffness are arranged at areas to sustain increased loads. Areas reinforced with discrete elements inside shaped plies are composed of hollow cases located in definite order above bottom ply with glue layer. Invention covers also the production of said boards.

EFFECT: higher hardness, longer life.

2 cl, 5 dwg

FIELD: textiles, paper.

SUBSTANCE: paper-like nanocomposite material contains mineral fibers with the addition of aluminium sulfate as a binder. The material is made in the traditional paper-making equipment by the method of molding at a predetermined ratio of the above mentioned components. The technical result is to obtain paper-like material having high filtering properties which enable to combine low aerodynamic resistance with high catching effect of particles of submicron character with the necessary technological strength.

EFFECT: material is characterised by a thermo-, chemo-, biopersistence, moisture-holding capacity, and it does not swell, the absence of toxicity and emissions into the air of substances with negative impact on human body, stability of properties against the action of mould, fungi and micro-organisms in the aquatic environment.

1 tbl, 3 dwg

FIELD: textile, paper.

SUBSTANCE: paper-like composite material comprises a mineral fibre, an aluminium salt as a binder and a polyvinyl acetate emulsion and an additive. This material is made on traditional paper-making equipment by method of casting at the specified ratio of above specified components.

EFFECT: production of paper-like material with higher strength, blotting capacity, thermal resistance and heat-, noise-, insulating properties, absence of toxicity and no emission of substances into air, which harmfully affect body organism, resistance of properties to mould, fungi and microorganisms effect in water medium.

3 ex

FIELD: process for manufacture of fibrous covering material wherein polyvinyl alcohol fiber is used as binder.

SUBSTANCE: method involves the following steps: dispersing stapled single filaments and stapled polyvinyl alcohol fiber in process water; forming layer in forming apparatus by discharging dispersion onto forming fabric, through which forming fabric process water is discharged while single filaments and fiber are settled on said fabric; providing thermal processing using thermal processing apparatus. Polyvinyl alcohol fiber imparts rigidity to layer of formed fiber.

EFFECT: increased tensile strength of resultant covering material and reduced content of binder.

22 cl, 1 dwg

Paper // 2019618
The invention relates to the pulp and paper industry and can be used in the manufacture of papers, mainly thermovalve, such as cushioning, paper type, fabric, furniture, packing and so on

Paper // 2019617
The invention relates to the technical aspects of a paper, such as insulation, filter, substrate under the membrane, gasket, etc

FIELD: process engineering.

SUBSTANCE: invention relates to removal of red-pulp from mineral fibres. Proposed method comprises making of the web of mineral fibres containing said red-pulp and untangling of web fibres. Untangling comprises feed of said web to at least one roller running about its lengthwise axis and has sharp tenons extending from roller peripheral surface. The roller outermost points run at velocity of 15-200 m/s.

EFFECT: higher efficiency of red-pulp removal.

17 cl, 1 dwg

The invention relates to a process for the production of hard mineral wool mineral wool and bitumen-dispersible binder and can be used in building materials industry

FIELD: process engineering.

SUBSTANCE: invention relates to removal of red-pulp from mineral fibres. Proposed method comprises making of the web of mineral fibres containing said red-pulp and untangling of web fibres. Untangling comprises feed of said web to at least one roller running about its lengthwise axis and has sharp tenons extending from roller peripheral surface. The roller outermost points run at velocity of 15-200 m/s.

EFFECT: higher efficiency of red-pulp removal.

17 cl, 1 dwg

FIELD: construction; acoustics.

SUBSTANCE: invention relates to production of acoustic ceiling tiles based on mineral wool. Method of producing diluted aqueous suspension for water hardening of main mat for acoustic ceiling tiles, includes delivery of a bale of pressed mineral wool with density of at least 8 pounds per cubic foot (approximately 0.13 g/cm3) on section for unpacking bales, disconnection of attachment holding bale in compressed state, mechanical separation of fibres from bale of mineral wool by mechanical means arranged with possibility of dispersion of fibres to ensure overall uniform density of less than 2 pounds per cubic foot (approximately 0.032 g/cm3), until passage of fibres via inlet of tank and direction of separated mineral fibre into mixing tank for bringing into contact with binding agent suspended in water.

EFFECT: technical result consists in improvement of acoustic characteristics, high mechanical properties of tiles.

4 cl, 3 dwg

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