Layered products (B32)

B32            Layered products(3978)
Extruded preform and container made of polyethylene terephthalate and method for production thereof // 2607739
FIELD: manufacturing technology.SUBSTANCE: invention relates to methods and systems of blow molding with extrusion of polyethylene terephthalate (PET). Extruded PET-preform contains the first extruded polymer containing PET, and the second extruded polymer with characteristic viscosity 0.8–0.87 containing PET. First extruded polymer and the second extruded polymer are extruded together. First extruded polymer has characteristic viscosity higher than characteristic viscosity of the second polymer. Besides, extruded monolayer PET-preform for container blow moulding with extrusion. Extruded multilayer polymer is in hardened condition and has characteristic viscosity from 0.96 to 1.4 and stripped chain extenders.EFFECT: production of a product with no haze and/or banding, having high strength.15 cl, 4 dwg
Composite profile and preparation method thereof // 2607653
FIELD: chemistry.SUBSTANCE: invention relates to composite profile made of aluminium, plastic using secondary raw material. Described is a composite profile, comprising a core made of mineral substances, vegetable fibres, additives and plastic of a single type, characterised by that plastic core consists of plastic wastes, as additives contains maleic anhydride MA, and on external surface of core there is a protective layer, which fully covers outer surface of core and is formed by a layer of not used plastic of single type, wherein plastic protective layer and plastic core are related to same type, wherein core and protective layer are made on principle of coextrusion, wherein core and protective layer are integrated with each other only due to production on principle of coextrusion, wherein outer side of protective layer on opposite side of composite section is lined with decorative layer of aluminium foil. Also described is a method of making composite profile.EFFECT: technical result is obtaining high-quality construction profiles by coextrusion, which have strong connection, long service life, are durable and are widely used.7 cl, 6 dwg, 5 ex
Prepreg // 2607582
FIELD: materials.SUBSTANCE: invention relates to impregnated materials, such as prepregs and decorative impregnated materials or decorative coating materials. Prepreg, used for producing decorative paper or decorative coating material, is produced by impregnating decorative paper-base with a solution of an impregnating resin. Solution of impregnating resin contains at least one styrene-alkylacrylate-hydroxyethyl methacrylate copolymer, wherein alkyl denotes methyl, ethyl, propyl or butyl, and at least one water-soluble polymer, selected from starch or dextrin from starch.EFFECT: prepreg is characterised by improved resistance to separation, as well as better adhesion and flatness.10 cl, 1 tbl, 9 ex
Coated wood products and method of producing coated wood products // 2607558
FIELD: construction.SUBSTANCE: invention relates to construction articles made from wood. Coated wood products comprise a wooden surface, provided with undercoat (3), where undercoat is at least one layer of lacquer, and are provided with top coat (5, 6), containing barrier particles and photocatalytic nanoparticles, preferably containing TiO2. Method of producing photocatalytic lacquered wood-based product, containing transparent photocatalytic nanoparticles, includes application of an undercoat by depositing a lacquer onto base in form of a product of wood to obtain at least one coating layer of lacquer, coating of the above cover lacquer(s) with a liquid for barrier coating to produce a transparent barrier layer, coating said transparent barrier layer with liquid for photocatalytic coating to produce a transparent photocatalytic layer and curing said cover lacquer(s), barrier layer and/or photocatalytic layer.EFFECT: invention improves operating reliability and durability of product, reduce level of volatile organic substances.25 cl, 3 dwg, 3 tbl, 5 ex
Design of inertial wheel for energy accumulation // 2607213
FIELD: machine building.SUBSTANCE: invention relates to inertial wheel comprising cumulative ring and hub, connecting cumulative ring with wheel rotation shaft. According to invention hub comprises central part making hub body for connection with shaft, peripheral part making rim of cumulative ring connection, and intermediate part, which is disk between hub body and rim. Hub is made from composite material and has modulus of rigidity, decreasing from hub body to rim. Invention also covers method of such inertial wheel making.EFFECT: invention enables decreased weight and higher density of accumulated energy.25 cl, 5 dwg
ethod of multilayer structure renewal // 2607212
FIELD: materials.SUBSTANCE: invention relates to protective layer applied on substrate nondestructive renewal method. Proposed method comprises electrochemical recovery of thermally grown oxide layer, located above substrate and protective layer. Recovery is performed under electrochemical conditions by applying external voltage to thermally grown oxide layer at temperature of at least 250 °C.EFFECT: invention provides possibility to perform renewal at local sections of protective coating, without part or other device removal from engine, to minimize downtime and excess wastes.10 cl, 4 dwg, 1 ex
Aircraft interior finishing panel and aircraft with such panels // 2607210
FIELD: aircraft engineering.SUBSTANCE: invention relates to aircraft interior finishing panels. Finishing panel has multilayer structure and comprises outer layer made of air impermeable material facing fuselage during use. Inner layer is made of finishing material, determining interior during use. Structural layer is laid between inner and outer layers. Sound energy scattering material is also laid between inner and outer layers, where by means of inner layer made from porous material, providing possibility of air flow passage to sound energy scattering material.EFFECT: invention ensures reduction of noise inside aircraft cabin.5 cl, 3 dwg
ethod for production of packing material coated with at least one barrier layer for hydrophobic compounds // 2606981
FIELD: packaging industry.SUBSTANCE: invention relates to a method of production of packing material with coating (10), which includes at least the following stages: a) obtaining substrate (12), which includes main material (14) from cellulose, outer side (16) turned from the product, which is been packed, as well as inner side (18) turned to the product been packed; b) coating inner side (18) of the substrate with at least one layer of an aqueous composition, which includes at least polyvinyl alcohol and a cross-linking agent and has the maximum content of solid substances of 25wt%: c) drying the layer and cross-linking the polyvinyl alcohol with the help of the cross-linking agent to form barrier layer (22a, 22b) for hydrophobic compounds. Also described is packaging material (10), where barrier layer (22a, 22b) contains a cross-linked polyvinyl alcohol arranged on inner side (18) of main material (14).EFFECT: technical result is preventing migration of hydrophobic hydrocarbons through the packing material according to measurement by gas chromatography by more than 99 %, and therefore for mineral oil it is always lower than 0,6 mg/kg of a packed food product.22 cl, 1 dwg, 1 tbl, 10 ex
Sound insulation system, in particular, for motor vehicle // 2606651
FIELD: transport.SUBSTANCE: invention relates to automotive industry. Motor vehicle sound insulation system comprises a flexible and porous basic buffer layer and an airtight intermediate insulating layer. Basic buffer layer is designed to be placed opposite the surface of the vehicle. Tight intermediate insulating layer is placed onto the basic buffer layer. Tight intermediate layer has the surface density lower than 500 g/m2, in particular, within the range from 50 g/m2 to 400 g/m2. Sound insulation system comprises a rigid porous layer contacting with the tight intermediate layer and having a thickness smaller than the one of the basic buffer layer. Rigid porous layer has a bending rigidity reduced to the unitary width exceeding 0.01 N/m.EFFECT: provided is improved sound insulation and reduced weight of the sound insulation system.14 cl, 7 dwg
oisture and oxygen-impermeable material intended for packaging of dietary products, cosmetics and medical goods of special purpose // 2606646
FIELD: manufacturing technology.SUBSTANCE: invention relates to a primary package for soft gelatine capsules containing lipophilic base and microorganisms in the form of blister packages or packets-sachets containing a multilayer material. Material includes at least two aluminium layer, connected to each other, where each aluminium layer has thickness from 2 to 50 mcm, wherein the first side is connected with a layer of polyamide (PA), and the second side is connected with a layer of polyethylene (PE) or polyvinyl chloride (PVC), which makes the multilayer material type PA/(Al)n/PE or PA/(Al)n/PVC, where n ranges from 2 to 10.EFFECT: technical result consists in production of multilayer material, which provides minimum permeability and long storage life of products of special purpose.11 cl, 13 tbl, 4 ex
ethod of making film composite and use of film composite made using said method // 2606631
FIELD: materials.SUBSTANCE: invention relates to film composites, in particular, method for production of composite film from polyarylenetherketone moulding compound and metal foil, as well as use of the film composite made by said method for production of the printed circuit boards retaining stability of dimensions. Proposed method of making composite film of polyarylenetherketone moulding compound and metal foil includes the following steps: I) preparation of film with thickness 5–1,200 µm from the molding mass containing the following components: a) polyarylenetherketone 60–96 wt%, b) hexagonal boron nitride 2–25 wt%, and c) talc 2–25 wt%, where the sum of weight parts of components a), b) and c) is 100, II) preparation of metal foil, thickness 10–150 µm; III) molding of the films prepared at the stages I and II without any adhesive at temperature from Tm-40 K to Tm+40 K and under pressure from 4 to 5,000 bar.EFFECT: technical result is development of the method, which, using the film of polyarylenetherketone moulding compound with less shrinkage, as well as lower thermal surface expansion coefficient, by dry lamination with metal foil makes a composite with good adhesion and smooth surface.10 cl, 1 tbl
Foaming article // 2606603
FIELD: personal usage items.SUBSTANCE: invention relates to product suitable for ear plug formation, and article which is ear plug. Article comprises elongated core or base containing first material and having first and second ends or main surface, and outer layer or outer main surface, containing thermoplastic second material, covering at least part of outer main surface of elongated core or base and including inactivated foaming agent with expanding spheres and inactivated chemical foaming agent. At that, inactivated foaming agents can be activated to increase volume of external layer and core has stiffness exceeding outer layer stiffness.EFFECT: providing easy insertion into ear canal, not requiring preliminary compression or "rubbing" of noise suppressing part, wherein outer layer provides adequate comfort when placed in user ear canal.10 cl, 13 dwg
ethod for treating steel band or plate provided with metal coating with after-treatment agent, and steel band or plate provided with metal coating // 2606436
FIELD: technological processes.SUBSTANCE: invention relates to a method for treating a steel band or steel plate provided with a metal coating with an after-treatment agent. After-treatment agent comprises at least one polyalkylene glycol and a fluorescent antioxidant, which is fluorescent when excited with light during fluorescent spectroscopy. Agent is applied in form of a liquid solution on surface of metal coating. Further, invention relates to steel band or steel plate with metal coating, particularly to white tin, which on surface of metal coating comprise a thin layer of said after-treatment agent.EFFECT: invention provides better wetting with paint material and better adhesion of paint material and simultaneously as low coefficient of friction surface as possible, as well as good processibility of steel band or steel plate with coating.14 cl
ethod of producing composite material // 2606134
FIELD: chemistry.SUBSTANCE: invention can be used for production of composite materials with high values of ultimate strength and modulus of elasticity. Stacking of alternating layers of base metal and reinforcing perforated metal sheet with through channels is made, wherein channels are distributed uniformly over entire area of sheet. Layers are welded by explosion, it is followed by low-temperature annealing, rolling and final high-temperature annealing. Channels in reinforcing sheet are made in form of opposed cones, truncated in middle of sheet. Diameter of contact points of cones is less than diameter of base of cones by 1–2 sheet thickness.EFFECT: method provides high strength and modulus of elasticity in combination with high plasticity, absence of anisotropy of properties.1 cl, 3 dwg, 1 tbl
Lining material and pipeline // 2605968
FIELD: chemistry.SUBSTANCE: invention relates to a lining material or a prepreg for use in pipelines or to a pipeline. Lining material or a prepreg comprises a deformable seamless article cured preferably by ultraviolet light and impregnated with a synthetic resin. Seamless article is made from a glass yarn. Weight of the glass yarn ranges from 1,000 up to 1,800 texes. Synthetic resin used is a polyester resin or a vinylester resin. Lining material is applied to the inner pipeline wall and/or is connected with it. Synthetic resin is cured together with the seamless article embedded in it and corresponding to the inner pipeline wall.EFFECT: proposed is a lining material for use in pipelines.10 cl

Resumption of blood flow in human blocked arteries by transferring nano incapsulated drug by means of medical devices designed therefor, and release of nano incapsulated drug within human artery at physiologic ph level // 2605793
FIELD: medicine.SUBSTANCE: group of inventions refers to medicine and concerns medical device introduced into lumen of any part of body in order to deliver drug for treatment of medical conditions associated with lumen of body part, as well as method for treatment applying such device at physiologic pH level. Such conditions include restenosis, atherosclerosis, and accumulation of plaques in lumen of body part. Device can include stent, cylinder, balloon catheter, stent installed on balloon, and has external surface covered with two or more nano vehicles having multiple average diameters. Multitude of nano vehicles have average diameter, acceptable for penetration through one or more layers of two or more layers of lumen of body part - intima, middle layer, and adventitial layer of vessel / vessels. Nano vehicle includes drug surrounded by encapsulating medium which contains one or more of biological agent, filler based on blood, and phospholipid, dissolved at pH less than 7.4.EFFECT: group of inventions provides release and contact with drug only in destination tissues, with prevention of focal restenosis, stabilization of drug by encapsulating medium, with improved affinity of carriers for destination tissues, improvement of target delivery during degradation of encapsulating medium.26 cl, 6 dwg, 5 ex

Water-ingress label using a double coating capsule structure // 2605702
FIELD: monitoring devices.SUBSTANCE: present invention relates to a water-ingress label using a double coating capsule structure. Indicator includes first and second spacer layers, the first and second adhesive layers, the first and second coating layers, the first and second layers of waterproof, water-absorbing layer, a dye layer formed by printing on the back surface of the water-absorbing layer, and a protective layer for the dye. This dye with the structure of the capsule with a double coating comprises a coloring agent consisting of water-soluble dyes, pigments, metal, silica, mica, metal oxides and halogen-free and water-absorbent hydrophilic resin. Protective layer for a dye that serves for waterproofing and performing water repellent function formed on the back surface of the dye layer and prevents leakage through the rear surface layer of the dye colorant.EFFECT: proposed indicator of water penetration has high moisture resistance, and provides the ability to accurately determine the fact of the ingress of water, even on a very narrow area.15 cl, 6 dwg
Shrink film "forsplast-thermo" // 2605591
FIELD: packaging industry.SUBSTANCE: invention relates to processing of plastics and may be used in production of films, sheets. Shrink film may be used for packing of large-size and non-standard cargoes, when the packaging materials should have high strength and heat-shrinkable properties. Polymer t/in film consisting of two layers is performed by co-extrusion or other existing methods, using which there appears the orientation of different-composition layers of polymer material, which provides shrink properties and leads to formation of different structure of layers. One layer in the form of solid shrinkable film has a degree of orientation in longitudinal and transverse directions according to the parameters of shrinkage of the corresponding type shrinkable film, and the second layer is oriented in longitudinal and transverse directions, but has irregular mesh structure.EFFECT: this enables cheap and functional package taking into account features of cargo, considerably increasing its strength and reduce the polymer material.1 cl, 1 ex

Binder composition for use in cellulosic composites and methods related thereto // 2605583
FIELD: materials.SUBSTANCE: invention relates to blended material, comprising (i) a binder composition comprising an isocyanate compound, a metallic catalyst and an acid compound, where isocyanate compound is a polymer diphenyl methane diisocyanate, where metallic catalyst is a organotin or organometallic compound of transition metal of group IVB of periodic table of elements, where acid compound includes gaseous hydrogen chloride, isophthaloyl dichloride, tetraphthaloyl dichloride, benzoyl chloride, thionyl chloride or combinations thereof and is present in binding composition in amount, where acidity of isocyanate compound ranges from 800 ppm to 10,000 ppm in terms of HCl; and (ii) lignocellulose material.EFFECT: invention also relates to a lignocellulose composite material and a method for production thereof.12 cl, 3 tbl, 7 ex
Structural panel // 2605572
FIELD: construction.SUBSTANCE: invention relates to a new structural panel used as a covering, noise and vibration-isolating and heat-insulating panel. Panel is made from a composition containing epoxy resin based on block-oligomer with long chain, containing aromatic links, curing agent based on aliphatic polyamines or polyaminoamides and foaming agent based on polyethylhydrosiloxane. Above composition is in transition state from being glass-like to highly elastic at -4 to +40 °C. Panel has noise and vibration-absorbing and heat-insulating properties, improved structural properties.EFFECT: such covering can be used for protection of structures of vehicles, structures combining protective function and mechanical load transfer functions, operating in high humidity conditions, in construction, shipbuilding, aircraft construction et cetera.13 cl, 2 ex
ultilayer film for resealable packaging // 2605570
FIELD: packaging industry.SUBSTANCE: invention relates to multilayer film containing two thin layers of thermoplastic material interconnected by a continuous layer, wherein said layer has thickness in range of 7 to 300 mcm, and is formed by hot-melt self-adhesive composition having flow coefficient (or MFI) varying from 2 to 70 g/10 min, containing 40 to 70 wt% mixture of styrene block-copolymers, wherein said mixture has total content of styrene links varying within range from 10 to 16 %, and consists of 50-90 wt% of one or more diblock copolymers of styrene-isoprene (SI) type and 10-50 wt% of one or more linear triblock copolymers of styrene-isoprene-styrene (SIS) type, and 30 to 60 wt% of one or more tackifying resins having a melting point in range from 5 to 140 °C.EFFECT: invention also relates to a method of making said film by coextrusion and use of said film for making troughs suitable for repeated closure.15 cl, 1 tbl

Transparent multilayer film // 2605568
FIELD: construction.SUBSTANCE: invention relates to multilayer polymer film materials, which can be used in window glazing of building structures and vehicles, and concerns transparent multilayer film. Film contains: transparent polymer film; transparent multilayer placed on top of transparent polymer film, this transparent multilayer has one or several layers of metal oxide and one or several layers of metal layered alternately; pressure-sensitive adhesive layer placed above and in contact with transparent multilayer; double-axially oriented polypropylene layer placed above and in contact with layer of adhesive sensitive to pressure; and layer of hardened resin placed over said polypropylene layer.EFFECT: film has excellent solar radiation shielding, high transparency, heat-insulating ability and resistance to scratching, as well as it can reduce mechanical stress applied by rubber roller during fastening of film and is protected from deterioration by corrosion in salty water.15 cl, 5 dwg, 5 tbl, 20 ex

ethod of producing multilayer construction articles // 2605564
FIELD: construction.SUBSTANCE: invention relates to construction and is intended for reliable and durable water-resistance of both aboveground and underground and underwater construction. Method of producing multilayer construction articles includes serial laying in form with sides of reinforcement mesh with anchor elements, concrete mixture, waterproof layer of elastic material in form of film. Vacuum pressure is created in space limited by form and film fixed to its sides. Hardening material of protective finishing layer is placed to embrace anchor elements with it. Wherein laying of concrete mixture is made separately: at first, coarse filler is supplied simultaneously with laying of reinforcement mesh, after vacuum creation hardening solution is supplied in pore space with simultaneous laying of protective-finishing layer material.EFFECT: technical result is high efficiency of hydroprotection, improvement of strength of article.1 cl, 2 dwg

Inorganic multilayer package and related methods and compositions // 2605560
FIELD: packaging technology; chemistry.SUBSTANCE: invention relates to a multilayer package on a substrate for use as a capsule. Multilayer package includes one or more inorganic barrier layers for reduction of gas or steam molecules transfer through them; an inorganic chemically active layer containing an inorganic binding material and placed adjacent to one or more inorganic barrier layers, and the chemically active layer is capable of reacting with molecules of gas or steam. Herewith in the multilayer package working state gas or steam molecules diffuse through one or more inorganic barrier layers, react with the inorganic chemically active layer.EFFECT: invention enables to efficiently protect articles placed in the capsule and sensitive to moisture and gases of the environment due to impermeability for gas or steam molecules of the multilayer package.35 cl, 5 dwg

Compressible tubular containers // 2605508
FIELD: packaging industry.SUBSTANCE: present invention relates to compressible tubular containers made from polymer material obtained through extrusion with blowing of multilayer film without subsequent stage of lamination, and particularly to contractible tubular container, which includes side wall, which includes longitudinal welding seam or compound, wherein the multilayer polymer material has thickness of 150-350 microns, more preferably, 200-300 microns. Each layer of multilayer polymer material uses advantages in essence similar or balanced profile of molecular orientation. Present invention also relates to method of forming such container.EFFECT: containers have improved ovality without cracking due to stresses.29 cl, 3 dwg, 2 tbl

Polymer material for heat-insulated container // 2605398
FIELD: chemistry.SUBSTANCE: invention relates to composition for making heat-insulating foamed non-aromatic polymer material, which can be used for making an article, particularly a container. Composition contains a basic polymer material, a second polymer material, a nucleating agent, a slip agent, and a blowing agent. Basic polymer material contains polypropylene with high melt strength, characterised by long-chain branching, and second polymer material contains a polypropylene homopolymer.EFFECT: obtained polymer material has high heat-insulation properties, easily undergoes secondary processing, is resistant to piercing and is unbreakable.63 cl, 10 dwg, 12 tbl
Adhesive system // 2605134
FIELD: chemistry.SUBSTANCE: invention relates to an adhesive system comprising (a) component-resin containing melamine-urea-formaldehyde resin in which amount of melamine, expressed in form of M/(M+U) varies from 30 to 60 wt%, and molar ratio F/NH2 varies from 0.6 to 0.79, and (b) a curing component containing at least one acid, acid-forming salt or acid salt and does not contain or contains less than 15 wt% urea. Invention also relates to its application, method of producing wood-based article and articles obtained using said method.EFFECT: technical result is providing an adhesive system containing melamine-urea-formaldehyde resin with low or zero level of release of formaldehyde, but is effective as an adhesive for wood without need to spend very considerable time on pressing or application of high temperature.14 cl, 5 tbl, 1 ex

Conducting facing material for composite structures // 2605131
FIELD: manufacturing technology.SUBSTANCE: invention relates to laminar materials for protection against lightning discharge (LDP) and/or protection against electromagnetic interference (EMI) and concerns an electric conductive facing material for composite structures. Material is a multilayer structure with very thin layer of conducting foil metal and polymer film, formed on at least one surface of conducting layer. Polymer film is formed from curable polymer composition containing epoxy novolac resin, trifunctional or tetrafunctional epoxy resin, ceramic microspheres, latent amine curing agent, dispersed inorganic fillers and impact strength increasing component. Polymer film demonstrates high glass transition temperature, as well as high resistance to lacquer coating removing solutions. Besides, conducting lining material is suitable for combined hardening with polymer composite substrates reinforced by fiber.EFFECT: invention provides creation of multifunctional, conducting, light facing material, resistant to lacquer coating removing solutions and UV radiation.22 cl, 2 dwg, 6 tbl

Black-plated steel sheet // 2605050
FIELD: technological processes.SUBSTANCE: invention relates to application of coating on surface of a steel sheet, particularly black coating material. Disclosed is a black-plated steel sheet comprising a hot-dip Al and Mg-containing zinc-plated layer which comprising 1.0 to 22.0 wt% of Al and 1.3 to 10.0 wt% of Mg, with a black oxide of Zn distributed in plating layer, said hot-dip Al and Mg-containing zinc-plated layer having a surface lightness represented by L* value of 60 or less.EFFECT: proposed steel plate retains its black appearance after treatment, can be stamped and is characterised by corrosion resistance.11 cl, 11 dwg, 13 tbl

Sheet providing water tightness of walls and attic rooms of buildings, as well as insulating panels, suitable for limitation of microorganisms and insects propagation // 2604840
FIELD: construction.SUBSTANCE: invention relates to sheet (100; 200; 300; 600; 700) intended to provide water impermeability to walls and attic part of buildings made from fibrous material; comprising bearing layer (1; 701), watertight membrane (2; 22; 702), wherein said bearing layer and said membrane are connected to each other over their entire surface; additive having antibacterial, antifungal, fungicidal and insecticidal properties, where at least one of said bearing layer (1; 701) and said membrane (2; 22; 702) contains said additive, wherein said additive is a mixture containing: quaternary ammonium, derivatives of isothiazolone, permethrin.EFFECT: disclosed is a sheet intended for providing water impermeability of walls and attic rooms of buildings.16 cl, 6 dwg

ethod for producing laminar sound-absorbing composite materials // 2604839
FIELD: acoustics.SUBSTANCE: invention relates to production of noise-damping composite materials and structures for machine building, transport, construction and a method of producing laminar sound-absorbing composite materials. Method involves connecting at least two layers of nonwoven materials made from a mixture of polymer or polymer and flax fibre. Prior to connection one of the layers is subjected to hot shaping by compression at the temperature of not lower than the melting temperature of polymer material of fibers to increase the volume density 2-6 times. Connection is performed by simultaneous pressing of cold layer with initial density and layer subjected to hot pressing. Pressing is carried out at the temperature lower than the melting temperature of polymer material of fibres without preliminary cooling of thermoformed layer.EFFECT: invention ensures production of materials with higher acoustic characteristics, flexural rigidity and consequently structural strength.1 cl, 1 dwg, 2 tbl, 1 ex

Composite material hinge and its manufacturing method // 2604745
FIELD: machine building.SUBSTANCE: invention relates to hinge and such hinge making method. Hinge comprises rigid part and flexible part, intended for bending relative to rigid part permanently connected to each other with possibility of rotation. At that, rigid part comprises substrate made of rigid composite material, and flexible part comprises first flexible sheet, which first part is partially attached to substrate using first layer of resin, and second flexible sheet partially attached using second layer of resin, both to first flexible sheet first part, and to first flexible sheet second part, which is not attached to substrate.EFFECT: invention enables durable and multifunctional hinge with flexible part, having flexural rigidity varying in function of distance from rigid part, which has distinct phases contact surface between rigid and flexible parts and can be made in quick and easy way.24 cl, 8 dwg

Wall covering for thermal and acoustic comfort // 2604608
FIELD: construction.SUBSTANCE: invention relates to multilayer wall covering, comprising: (a) a support layer formed by an organic polymer foam having an open porosity between 0.50 and 0.995, or by a viscose fibre nonwoven having surface density between 150 g/m2 and 500 g/m2; (b) a surface layer formed by a glass textile, having a static air flow resistance, measured according to standard ISO 9053, between 105 N·s·m-4 to 106 N·s·m4; (c) at interface between support layer (a) and surface layer (b), a discontinuous adhesive layer having surface density between 17 and 60 g/m2. Invention also relates to use of such covering for improving both acoustic and thermal comfort of a room, and two methods for manufacturing such a covering.EFFECT: invention improves acoustic and thermal comfort of structures.16 cl, 1 tbl

High temperature insulating tape and wire or cable sheathed therewith // 2604234
FIELD: cables.SUBSTANCE: invention relates to high performance, high temperature resistant wires and cables as well as to a method for production thereof. Said wires and cables are fire-resistant and are used in heavy operating conditions, such as drilling or mining operations, industrial, military, aerospace and sea applications. Tape (20) comprises a laminated or co-extruded insulating first layer (24) of a polymer matrix in which mica particles are dispersed and second layer (26) of a polyether ether ketone (PEEK) or a blend or alloy thereof containing at least 50 wt% of PEEK. Surface of at least one said layer, opposite other said layer, is coated with fluoropolymer film (25). Sid tape can be used to form a multilayer coating on conductor (10) such as an electric wire. Outer protective layer (28) of a fluoropolymer such as PTFE may be applied around wrapped tape, by wrapping or extrusion.EFFECT: technical result is production of wires and cables with good insulation, high temperature resistance, and also having improved mechanical properties at high temperatures.59 cl, 4 dwg, 1 tbl

Denoising gasket // 2604226
FIELD: machine building.SUBSTANCE: invention relates to layered structural materials, particularly to a denoising gasket. Gasket is made in the form of a two-layer laminated plate. First layer is a relatively solid material having the first and the second surfaces. On the first surface there is multiple elevated and, as a rule, pointed sharpened elements, each of which has an apex. Second layer is a material from graphite foil, which is connected with the relatively rigid material so, that at least some pointed sharpened elements stab the material from graphite foil. In one embodiment the first layer does not have perforated holes and is uniformly smooth. In another version on the second surface there is also multiple sharpened elements, and the third layer containing graphite foil is connected with the second surface.EFFECT: invention provides creating a denoising gasket for installation between the piston and the substrate of the brake shoe.20 cl, 9 dwg
ethod of making thin-wall laminar bearing panels // 2604221
FIELD: construction.SUBSTANCE: invention relates to structural panels and is aimed at manufacturing 3D frame mesh panels. Method involves formation of a system of spiral and ring ribs of the bearing set by winding an elastic dry fibrous material (a ribbon, a thread and similar) onto a matrix arranged on the forming tool, subsequent formation of the lining layer by winding the elastic fiber material over the bearing set, further polymerization of the binding agent and removal of the panel from the mandrel. Polymerization of the distributed binder is carried out after finishing formation of the multilayer 3D structure.EFFECT: invention ensures production of several layers in manufacturing multilayer 3D bearing ribbed panels, including thin-wall ones, and improved manufacturability.1 cl, 1 ex

ethod of forming articles of composite material // 2603798
FIELD: technological processes.SUBSTANCE: invention relates to method of forming articles of composite material. Technical result is achieved by method of forming articles of composite material, which involves lining of fibrous material, impregnated with binder, in recess of production equipment and use of sealing elements of thermally expanding rubber to create molding pressure, package, heating, supply of pressure, cooling of hardened product and its extraction from tooling fixture. Wherein volume of tooling cavities is equal to or greater than volume of non-compacted fibrous material, impregnated with binder, forming article. Sealing element is made of strip-like uncured thermally expanded rubber covering recess of tooling. Wherein pressure is transmitted to rubber element via stiff saddle overlapping strip of uncured rubber, which partially fills tooling cavity during heating and pressure supply via saddle, thus sealing fibrous material, impregnated with binder and creating molding pressure during curing.EFFECT: technical result is reduced labor input, power consumption and shorter production cycle of making article.4 cl, 3 dwg, 1 ex

ethod of layering for non-planar components made of composite material // 2603791
FIELD: materials.SUBSTANCE: invention relates to a method of layering resin pre-impregnated bands made of composite material and to a non-planar composite component containing band of composite material. Method comprises determining trajectory of bands as modified trajectories of geodesic trajectories. Projecting geodesic trajectories corresponding to bands on horizontal plane. Modifying horizontal projection trajectories to satisfy following conditions of their projections on horizontal plane. Radius R2 of curvature of their curvilinear segments is greater than specified value Rmin. Gap G2p between two adjacent bands varies from 0 to a given value Gmax. Obtaining modified trajectories on corresponding surfaces of layering by crossing said surfaces with vertical plane, which comprises modified horizontal trajectories. Outputting modified trajectories into ATL machine for application of layers.EFFECT: higher quality of finished articles.7 cl, 6 dwg

Surface covering // 2602900
FIELD: materials.SUBSTANCE: invention relates to a PVC-free multiple layer surface covering, comprising at least one layer of a thermoplastic composition, wherein the thermoplastic composition comprising a polymer-based matrix representing 100 parts in weight and comprising one or more olefin-based polymer(s) and one or more anhydride copolymer(s), said one or more anhydride copolymer(s) representing between 5 and 40 parts in weight of the polymer-based matrix, one or more filler(s) representing in weight at least 100 parts per 100 parts of said polymer-based matrix, one or more basic or amphoteric metal oxide(s) representing between 5 and 40 parts in weight per 100 parts of said polymer-based matrix.EFFECT: technical result is providing multiple layer surface covering having improved residual indentation.9 cl, 8 tbl, 31 ex

Sheet styrofoam based on cross-linked polylactic acid and method for its production // 2602898
FIELD: chemistry.SUBSTANCE: invention relates to sheet styrofoam based on cross-linked noncrystalline polylactic acid and method of its production. Styrofoam sheet contains one or more layers of resin, containing non-crystalline polylactic acid, where this non-crystalline polylactic acid in the resin is cross-linked, and forms closed cellular structure, wherein this one or more resin layer is made of biodegradable resin-based composite containing from 0.001 to 10 wt% of cross-linking agent and from 0.1 to 10 wt% of. foaming agent per 100 weight parts of noncrystalline polylactic acid, wherein this biodegradable resin-based composite material contains also a cross-linking agent which is triallylisocyanurate (TAIC), in an amount of 1.0 wt% or less. per 100 weight parts of noncrystalline polylactic acid.EFFECT: this styrofoam has not only excellent water resistance and technological specifications, but also relatively high index of foaming and homogeneous closed cellular structure.19 cl, 2 dwg, 1 tbl

Laminated high-strength corrosion-resistant steel // 2602585
FIELD: metallurgy.SUBSTANCE: invention relates to metallurgy, namely to high-strength corrosion-resistant laminated steel, used for making of welded structures and equipment used in oil processing, petrochemical, chemical, coke-chemical and other industries. Laminated steel consists of cladding layer made from austenitic corrosion-resistant steel, and main layer made from high-strength low-carbon micro-alloyed steel. Main layer steel contains, wt%: C 0.04-0.07, Si 0.10-0.50, Mn 0.5-2.0, Al 0.015-0.09, Mo 0.10-0.27, Ti 0.10-0.20, Cr ≤ 0.5, P ≤ 0.03, S ≤ 0.005, iron and unavoidable impurities, including nitrogen with content not exceeding ≤ 0.01 wt%, the rest. Molybdenum content in main layer steel is determined depending on titanium content in compliance with relationship [Mo]=(1÷1.35)[Ti], facilitating formation of complex carbides (Ti, Mo)C nano-sized emissions volumetric system.EFFECT: enabling higher weldability, strength, ductility, cold resistance and corrosion resistance.1 cl, 2 tbl

Heat conducting metal-based dressing material with hydrogel substrate // 2602360
FIELD: medicine.SUBSTANCE: series of inventions relates to medicine. Bandaging materials are described, which include metal substrate, such as aluminium, having side facing the burn, for direct contact with the burn, to take away heat from burn due to heat conductivity, and directed to heat absorber side, opposite the side facing the burn, for contact with the hydrogel, to withdraw heat from the metal layer by heat conductivity.EFFECT: thin layer of aluminium and connected to it hydrogel heat absorber provide flexibility and effective heat transfer characteristics for fast cooling of burn wound.22 cl, 3 dwg, 2 ex

Pultrusion shaped fibre-glass // 2602161
FIELD: glass.SUBSTANCE: invention relates to compositions and a method of producing a glass-composite shaped material by pultrusion for making shaped fiberglass as per the cross-section with solid cross-sections of different shapes. Fibre-glass contains a filler in the form of titanium dioxide powder, a fire retardant - melting aluminosilicate clay, epoxy resin, a hardener iso-MTHPA (iso-methyltetrahydrophthalic anhydride), an accelerator-Alcophen, quartz sand, a plasticizer - aliphatic epoxy resin DEG-1.EFFECT: invention provides a chemically resistant and fire-resistant fibre-glass.1 cl, 2 tbl, 3 ex

Structured thermoplastic in intersheet zones of composite materials // 2602159
FIELD: construction.SUBSTANCE: group of inventions relates to a prepreg for use in production of uncured laminate, a composite part formed by hardening the uncured laminate and a method of producing the laminate. Prepreg comprises multiple fibrous layers and uncured thermosetting resin. Fibrous layers are separated by an intersheet zone located between adjacent fibrous layers. Prepreg also contains at least one layer of structured thermoplastic polymer, the said thermoplastic polymer is not soluble in the said thermosetting resin, has the thickness of 2-35 µm and the weight per a square unit from 2 to 10 g/m2. Thickness of at least one layer of the structured thermoplastic polymer is not more than 95 % of the intersheet zone thickness. One or more layers of the structured thermoplastic polymer, such as a light veil of thermoplastic polymer fibres, are located inside the intersheet zone of laminates, which consist of fibrous layers and thermosetting resin. Thermoplastic veils are used in the intersheet zones instead of thermoplastic particles of a strength increasing agent.EFFECT: technical result is achieving higher volumes of filling with fibres required for structural parts, the possibility to use a convenient hardening cycle outside the autoclave, production of light but structurally rigid laminates.14 cl, 5 dwg, 3 tbl, 6 ex

Electrically insulating material // 2602117
FIELD: electric insulation.SUBSTANCE: invention relates to electrically insulating materials. Electrically insulating article comprises a layer of non-cellulose nonwoven fabric, having first and second arranged opposite each other main surfaces, wherein each of main surfaces of layer of nonwoven fabric is attached to layer of non-cellulose nonwoven paper, wherein nonwoven paper and nonwoven fabric are electrically insulating. Nonwoven paper is a sheet material made from short fibres. Nonwoven fabric is a sheet material made of long fibres. At least one layer of nonwoven paper is connected directly with a layer of nonwoven fabric.EFFECT: invention provides creation of material with high fire resistance, having high mechanical strength and residual flexibility after thermal ageing.19 cl, 7 tbl, 2 ex

ethod of producing aircraft compartment in the form of shell of revolution and aircraft compartment in the form of shell of revolution // 2602114
FIELD: aircraft engineering.SUBSTANCE: invention relates to aircraft engineering, particularly to creating structures for aircraft (AC). In making an AC compartment in the form of a shell of revolution on the mandrel a separation layer is placed from a rubber-like material with spiral grooves of both directions of equal width, in layers of high-modulus fibres into these grooves spiral ribs are wound, then wound is a squeezing lining of a thermo-contracting material, heat treatment is performed, the lining is removed, the separation layer is removed from the mandrel and discharged. Herewith the grooves are made with a smooth increase of their depth, thus providing conicity of inner contour of the shell. Herewith after the heat treatment and removal of the lining ribs are made together with the rubber-like material providing connection parameters of the outer cylindrical surface of the section shell. Herewith the outer surface of each rib is made as part of the outer cylindrical surface of the compartment, and the increase in cross section square is obtained by smooth increase of the construction height of each rib with increasing the number of fibers in the cross-section.EFFECT: provided is creation of a high-tech design of a lighter AC compartment with higher reliability of operation.4 cl, 6 dwg

ethod of producing aircraft compartment in the form of shell of cellular structure revolution and aircraft compartment in the form of shell of cellular structure revolution // 2601972
FIELD: aircraft engineering.SUBSTANCE: invention relates to aircraft engineering and concerns manufacturing compartments structures of aircrafts (AC). At manufacturing compartment in the form of a shell of cellular structure revolution a separation layer made of rubber-like material with circular and spiral grooves is laid on the mandrel, then circular and spiral ribs are reeled in these grooves by layers of high-modulus fibres, outer shell is wounded with tension, it is heat treated, it is removed from the mandrel and a separation layer is removed. Note here that prior to winding of an outer shell inserts are installed in the corresponding cells, previously made in the form of shaped flange with cantilever threaded bushing and cantilever flanges with sharpened edges. At that, recess for placement of the bushing is made in the centre of the cell in rubberlike material, and flanges with sharpened edges are hammered between a rib and rubberlike material. Then, an insert is pressed to the flange end into ribs by tension force of outer shell winding, and rubberlike material is squeezed simultaneously by pressing due to its volumetric deformation of the flange to the ribs with provision of contact pressure for gluing.EFFECT: creation of high-tech design of AC compartment with high reliability of operation is achieved.6 cl, 8 dwg

Base material from stitched carbon fibre and wet prepreg using thereof // 2601761
FIELD: space.SUBSTANCE: invention can be used in aerospace industry, in production of sports goods and leisure products. Prepreg with formability comprises a base material from a stitched carbon fibre. Multiple sheet materials 1 are arranged in layers and then stitched and joined together in a stitched base material using stitch thread 2 interlaced when passing through sheet materials 1. Each sheet material 1 is formed by arranging lines 11 of the carbon fibre parallel to each other. Direction of arranging lines 11 of the carbon fibre of each sheet material 1 forms an angle ranging from ±30° to ±60° to the direction of movement of interlacing stitch thread 2. Degree of the stitched base material tension in its longitudinal direction in case when a specific load per inch of width of the stitched base material is applied in the direction of movement of interlacing stitch thread 2 is equal to or below 4 % when the load is equal to 5N and is equal to or higher than 10 % when the load is 25N. Prepreg is formed by impregnation of the base material from the stitched carbon fiber, in which multiple sheet materials 1 are arranged in layers and then stitched and joined together using stitch thread 2 interlaced when passing through sheet materials 1 by a thermosetting resin within the range from 30 wt% to 50 wt%. EFFECT: invention enables to obtain a base material from a stitched carbon fibre, which has high shape stability and moldability and provides for convenience in processing a wet prepreg, facilitates production of a 3D shape.9 cl, 6 dwg, 1 tbl, 4 ex

Epoxy binder, prepreg based thereon and article made therefrom // 2601486
FIELD: chemistry.SUBSTANCE: invention relates to epoxy binder for making structural polymer composite materials based on fibrous fillers and can be used in construction industry, aircraft, space, automobile, ship-building industry and other industries. Epoxy binder contains following, wt%: polyfunctional epoxy resin 5.0-36.0; epoxy non-functional resin 45.0-75.0; polyarylsulphone 4.0-15.0; curing agent - 4,4′-diaminodiphenylsulphone 10.1-13.5; latent curing agent - dicyandiamide 1.1-3.5. Also disclosed is a prepreg containing wt%: epoxy binder 30.0-50.0 and fibre filler 50.0-70.0. Article is obtained by automated laying of prepreg with subsequent vacuum moulding of prepreg.EFFECT: invention provides improved process characteristics and makes it possible to obtain composite material with a higher level of maintaining physical and mechanical properties after exposure to negative operational factors (temperature of 70 °C, humidity of 85 %).10 cl, 3 tbl, 12 ex

ultilayer glass and method for production thereof // 2600946
FIELD: glass.SUBSTANCE: invention relates to multilayer glass. Multilayer glass is made from a plurality of glass sheets joined by intermediate layer. Among multiple glass sheets, at least two glass sheets are thick glass sheet and thin glass sheet. At any temperature between temperature of annealing and softening temperature the thick glass sheet has lower viscosity than the thin glass sheet. Two glass sheets of different thickness satisfy the formula 1<y<(1.22-0.206×x) and formula 1<z<(1.15-0.131×x), where x (x = t2/t1) is a ratio of thickness (t2) of thin glass sheet to thickness (t1) of thick glass sheet at room temperature; y (y=lg10η2/lg10η1) represents a relation of logarithm (lg10η2) of thin glass sheet viscosity to logarithm (lg10η1) of thick glass sheet viscosity at annealing temperature for the thick glass sheet; z (z=lg10η4/lg10η3) is a relation of logarithm (lg10η4) of thin glass sheet viscosity to logarithm (lg10η3) of thick glass sheet viscosity at melting temperature for the thick glass sheet.EFFECT: technical result of invention is improvement of bending accuracy.13 cl, 10 dwg, 3 tbl
 
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