Method for providing moisture resistance of floor constructions (versions) and floor construction obtained with this method (versions)

FIELD: construction industry.

SUBSTANCE: methods involve fabrication of one or more moisture-resistant flooring panels and installation of panel (panels) of flooring on the construction of the building floor. Each panel of flooring includes wooden plate item and mat made from non-woven material bonded at least to one side of wooden plate item.

EFFECT: increasing floor moisture resistance.

20 cl, 10 dwg, 1 tbl

 

The present invention essentially relates to a method of creating an improved sheet flooring with high moisture resistance and flatness and floor designs formed by such methods.

Known methods of construction floor buildings such as homes, include steps in which secure the sheets of flooring such as plywood or oriented strand plate (OSP), to the frame of the floor. On top of the sheets of flooring then attach the flooring (parquet, tiles or vinyl flooring). Between the flooring and the flooring can add moisture litter (e.g., roofing) to prevent the migration of water from the cavity present in the floor under the flooring, the flooring, which may cause damage to the materials of flooring such as wooden flooring, but also to prevent migration of water from the flooring in flooring and other floor construction that may cause damage to the flooring and other floor designs.

It is desirable to create other ways to protect structures from the floor of the water, and such floor structures produced by these methods.

According to one aspect features a method of providing moisture resistance of the floor structure of the building. The method comprises steps in which (a) make one or more moisture-resistant p. the Nelson flooring, in addition, each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, and (b) install the panel (s) flooring on the floor structure of the building such that the nonwoven Mat of each panel faces upward. Each panel flooring is made, exposing the wood sheet product and a Mat of non-woven material in the stage status "In the" effects of heat and pressure sufficient to complete the curing of the binder in the material and to adhere the Mat to the wood sheet product, and the Mat in the status stage "B" contains fibers that are related to each other binder containing a resin, which overiden only partially.

According to another aspect of the present invention propose the construction of a floor of a building, containing a lot of moisture panels flooring, attached to the frame of the floor of the building as a base layer. Each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product; in addition, each panel flooring obtained by exposure to wood sheet product and a Mat of non-woven material in the stage status "In the" heat and pressure sufficient to fully cure the binder in the material and to adhere the Mat to the wood sheet product, and the Mat is state-of-phase "B" contains fiber, related to each other binder resin, which overiden only partially. Mat of non-woven material of each panel facing up, and on top of the nonwoven mats of the base layer panels flooring attached to the flooring.

According to further aspect of the present invention proposes a method of providing moisture resistance of the floor structure of the building containing the stages in which (a) create one or more moisture-resistant panel flooring, each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, and (b) install the panel (s) flooring on the floor structure of the building so that is covered with a Mat of non-woven material of each panel facing the outside of the building.

According to another aspect of the present invention propose the construction of a floor of a building, containing a lot of moisture panels flooring, attached to the frame of the floor as the base layer. Each panel contains a wood sheet product, a Mat of non-woven material that is adhered to the wood sheet product, and an organic waterproof coating, bonded to the Mat of non-woven material, with waterproof coating of each panel facing up. The flooring is mounted on top covered with mats of the base layer of panels is Attila the floor.

According to another aspect of the present invention proposes a method of providing moisture resistance of the floor structure of the building, which contains the stages in which (a) create one or more moisture-resistant panel flooring, each of which contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, and (b) install the panel (s) flooring on the floor structure of the building such that the nonwoven Mat of each panel faces upward. Each panel is made by (1) forming a composite Mat containing (i) the Mat is formed from a composition containing particles of wood and a binder, the Mat has a first outer surface and second outer surface, and (ii) a Mat of non-woven material in contact with the first outer surface of the Mat formed from the composition, and (2) affect composite with heat and pressure sufficient to form the panel flooring containing wood sheet product having a first outer surface, a second outer surface and edges, with a Mat of non-woven material bonded to the first outer surface of the wood sheet product.

The invention is illustrated with drawings, which shows:

figure 1 - results of tests of various properties of the four types the panels, containing oriented particle Board (OSB) with different mats of non-woven material, and the control PCB, as explained below.

figure 2 - summary of results 1.

figure 3 - results of tests on the strength of OSB plates lined with fiberglass mats are made using a binder based on formaldehyde furfuryl alcohol (FSF) with the addition of water-repellent substances (on the drawings labeled as "Superior"). The drawing also shows the comparative results for the control plates OSB ("Control"). In addition, for each test in the drawings show the minimum standard values ("Standard") under the Canadian standards Association (CSA) for each test.

figure 4 - results of tests on the resistance of OSB plates lined with fiberglass mats are made using a binder based on CFF and water-repellent substances ("Superior"). The drawings also shows the comparative results for the control plates OSB ("Control"). In addition, for each test in the drawings show the minimum standard values ("Standard") under the Canadian standards Association (CSA) for each test.

figure 5 - results of tests on the strength of OSB plates lined with fiberglass mats are made using a binder on the basis of the e phenolformaldehyde (FF) ("Superior"). The drawing also shows the comparative test and the standard values listed in figure 3.

figure 6 - test results of the moisture resistance of OSB plates lined with fiberglass mats are made using a binder based on FF ("Superior"). The drawing also shows the comparative test and the standard values listed in figure 4.

figure 7 - results of tests on the strength of OSB plates lined with mats of polyester non-woven fabric of melt, made with binder based on FF ("Superior"). The drawing also shows the comparative test and the standard values listed in figure 3.

on Fig - test results of the moisture resistance of OSB plates lined with mats of polyester non-woven fabric of melt, made with binder based on FF ("Superior"). The drawing also shows the comparative test and the standard values listed in figure 4.

figure 9 - results of tests on the strength of OSB plates with facing glass mats made using a binder based on CFF ("Superior"). The drawing also shows the comparative test and the standard values listed in figure 3.

figure 10 - results of tests on the resistance of OSB plates with facing article is glass mats, made using a binder based on CFF. The drawing also shows the comparative test and the standard values listed in figure 4.

The present invention relates to a method of providing moisture resistance of constructions of gender, as well as to improved constructions of gender, obtained by these methods.

Essentially, the methods include the steps that will create one or more moisture-resistant panel flooring/mats floor and install the panel (s) on the floor construction of the building. Each of the panels of the flooring includes wood sheet product and a Mat of non-woven material attached to at least one side of the wood sheet product. As explained below, mats, non-woven fabric on the panels of the flooring provide moisture resistance of the flooring panels and, therefore, constructions of gender and the buildings in which they are installed. That is, the mats of non-woven material to provide moisture resistance of wood sheet product of the panel flooring and moisture resistant panel flooring protects from water the rest of the floor construction (including the material of the floor frame floor etc), preventing the migration of water (for example, from an upper panel flooring on top and bottom panels of the flooring). In some embodiments, the panel flooring may contain Mat from netcen the first material, glued to two sides of the wood sheet product (for example, to the opposite outer surfaces of the wooden sheet products).

The floor of the building can be protected from water, having made one or more moisture-resistant panel flooring and installing the panel (s) flooring on the floor structure of the building so that the Mat of non-woven material of each panel facing up (i.e. to the ceiling of the room in which the floor structure). The floor construction of the building may contain, for example, frame or other floor construction, and installation of panels flooring may include the fastening of the panels to the frame floor construction. In some embodiments, the panel flooring may contain a Mat of non-woven material bonded to both outer surfaces of the wood sheet product so one Mat facing up to the ceiling, and the other down. The second non-woven Mat can be used, for example, to provide additional water resistance from water passing within the floor construction (e.g., water pipes).

How to ensure the water resistance of constructions of gender further may include stages in which on the Mat or on top of a Mat of non-woven fabric panels (panels) deck attached or installing the flooring. The flooring may be material either is of type for example tile, wood flooring, cork flooring, carpet, etc.

Each of the panels flooring usually has two outer surfaces, and on one of the outer surfaces with at least one Mat of non-woven material. Each panel flooring may contain external edges. The outer edges of the panels of the flooring may contain self-adhesive tape which is covered by one or more strip which can be removed with this self-adhesive tape. Panel flooring for installation may also be grooved edges. For example, the panels may have a spike at the first outer edge and a corresponding tongue on the second, opposite outer edge so as to be able to connect multiple panels, tykwa spines and grooves of adjacent panels. In such embodiments, at least one Mat and wood sheet product usually performed adjacent to each other on the outer edges of the panel flooring (i.e. the outer edges of the Mat and wood sheet products are adjacent to each other). In some embodiments, however, the outer edge of the wood sheet product and at least one Mat of non-woven material are adjacent to each other. For example, at least one Mat of non-woven material of each panel flooring may contain overlapping area, the setting for one or more of cu is ISU wood sheet product, to which the Mat is glued. This overlapping area may contain adhesive, pressure-sensitive.

When installing panels flooring with a pressure-sensitive adhesive removable strip or strips of adhesive tape to one of the panels of the flooring can be removed, and this panel to connect with the floor construction or other panel flooring (or with self-adhesive tape to another panel) to form a seam. When installing panels (panels) flooring with superposed area of the nonwoven Mat is equipped with a pressure-sensitive adhesive, overlapping area of one of the panels of the flooring can be glued to the floor structure or to another panel of the deck for receiving the weld. The seam between adjacent panels of the flooring or between the panel flooring and floor construction can be formed using a sealing material such as epoxy resin, mastic or sealing composition.

In some embodiments, the methods can include the steps which are moisture resistant panel (s) flooring, and install the panel (s) on the floor construction. That is, in such embodiments, no other protection from water (such as roofing or insulation material Tyvek®) floor construction does not apply. Some of these options stage of the installation panel (panel) flooring may include the stage at which f is rerout seam between the edges of adjacent panels of the flooring and/or form a seam between the edges of the panels of the flooring or floor construction (e.g., frame floor); however, in other of these options stage of the installation panel (panel) flooring may not include the stage at which form the seam between the panels of the flooring.

Floor construction thereof, essentially contain a lot of moisture panels flooring, attached to the frame of the floor of the building as a base layer. As explained above, each panel contains a wood sheet product and at least one Mat of non-woven material bonded to the outer surface of the wood sheet product. This at least one Mat of non-woven fabric facing up. The floor structure also contains material of a floor covering (e.g., tiles, parquet, cork and other)attached on top of the mats of non-woven material of the base layer panels of the flooring.

Wooden sheet products used for forming panels of the flooring can be wooden products of any type, including, without limitation, wood-shaving plate, made of pressed sawdust, oriented particle Board (OSB), plywood and solid wood-fiber plate.

Mats of non-woven material used for the manufacture of panels, flooring, contain fiber, are related to each other binders. In some embodiments, the mats of non-woven material can be made up of the fibers and a binder, in other embodiments, the mats of non-woven material may also contain additional additives, such as pigments, dyes, flame retardants, waterproof agents and/or other additives. To moisture (i.e. water-repellent) agents can include, among other things, sterilizovanny melamine, fluorocarbons, waxes, asphalt, organic, silicone rubber and polyvinyl chloride.

Fiber mats of non-woven material may include glass fiber, polyester fibers such as polyester fibers obtained spunbond method), fibers made of polyethylene terephthalate (PET), synthetic fibers of other types (for example, nylon, polypropylene, etc.), carbon fiber, ceramic fiber, metal fiber, or a mixture thereof. Fiber mats of non-woven material can be composed entirely of fibers of the type specified above, or may contain one or more of the above types of fibers with fibers of other types, such as, for example, cellulose fibers or fibers of cellulose derivatives. Mat of non-woven material can also be reinforced on the inside or on the surface parallel threads, diagonal or box-shaped reinforcing elements. These additional reinforcing elements may be made of fiberglass yarn or continuous plastic or metal threads.

The fibers may be times the initial diameter and length depending on the strength and other characteristics, which should be obtained from the Mat. When using polyester fibers preferably, the great majority of fibers have a size of 3-5 denier. When using fiberglass preferably, the diameter of the fibers was 6-23 μm, more preferably 10 to 19 μm, even more preferably 11-16 μm. Fiberglass can be obtained from the glass of any type, including type E, type S, type T, type S and any other types of glass with good strength and durability in the presence of moisture.

To bind the fibers to each other it is possible to apply various types of binders. Usually choose this binder, which may be placed in an aqueous solution or emulsion of latex and which is soluble in water. As further explained below, the binder can be completely solidified when forming mats of non-woven material, or may refer to a stage of "In" (i.e. partially solidified). When in the material of non-woven material is a binder in the status stage "B", this binder is preferably communicates well with the tree. Examples of the binder in the status stage "B", which can be used for mats, non-woven fabric include, among other things, resin based on furfuryl alcohol, phenol-formaldehyde resin, melamineformaldehyde resin and mixtures thereof. When the mats are formed t is d (i.e. binder is not in the condition stage "B"), the binder can include, inter alia, urea resins, melamineformaldehyde, phenolformaldehyde, acrylic resin, polyvinyl acetate, epoxy resin, polyvinyl alcohol or mixtures thereof. The binder can also be selected so that they do not essentially contain formaldehyde (i.e., the amount of formaldehyde insignificant, but it may be present as an impurity in very small quantities). Glue that you can use to create do not contain formaldehyde mats of non-woven material include polyvinyl alcohol, carboxymethylcellulose, lignosulfonates, methylcellulose or mixtures thereof. Binder Mat of non-woven material may contain known sinks of formaldehyde. The use of formaldehyde scavengers in a binder dramatically slows measurable rate of emission of formaldehyde from the product.

Similarly, binder for non-woven material may contain an antimicrobial additive. Examples of suitable antimicrobial agents include zinc 2-pyrimidinyl-1-oxide; 1-[2-(3,5-dichlorophenyl)-4-propyl-[1,3]dioxolane-2-ylmethyl]-1H-[1,2,4]triazole; 4,5-dichloro-2-octyl-isothiazolin-3-one; 2-octyl-isothiazolin-3-one; 5-chloro-2-(2,4-dichlorphenoxy)-pheno-1,2-thiazol-4-yl-1H-benzoimidazole; 1-(4-chlorophenyl)-4,4-dimethyl-3-[1,2,4]triazole-4-and the methyl-pentane-3-ol; 10,10' exisistence; 1-(diametrally)-4-methyl-benzene, and mixtures thereof. When encapsulating or coating the two surfaces of a wooden panel flooring antimicrobial layers of the product becomes more resistant to mold and mildew. These coatings can also contain additives such as borates, which protect against termites and other insects and provide additional protection from fire.

Mats of non-woven material can be produced with the changing ratio of fiber to binder. For example, in mats stage "B" preferably, the mats contained about 25-75 wt.% fibers and about 15-75 wt.% binder, more preferably 30-60 wt.% fibers and 40-70 wt.% the binder. Mats, custom binders that do not contain formaldehyde, preferably contain about 93-99,5 wt.% fibers and about 0.5-4 wt.% the binder. However, for mats stage "B", the mats do not contain formaldehyde, and mats that are not related to the stage "B", and for other mats you can use other ratios of fibers and binder.

Mats of non-woven material may also have a variable thickness. The typical thickness of the Mat is between 0.020 and 0.125 inches (about 0.5-3.17 mm), although it is possible to use thinner and thicker mats.

Mats of non-woven material can further contain a coating, giving them a resistance (or waterproof the permeability), the resistance, resistance to insects, mold resistance, giving a smooth surface, raising or lowering the coefficient of friction surface, the desired aesthetic and/or other surface properties. The coatings that can be used for moisture resistance, are organic moisture resistant coatings, such as asphalt, organic, silicone rubber and polyvinyl chloride. The coating is preferably located on the outer side of the mats (i.e. on that side which is not glued to the wood sheet product).

To create mats you can use any method of making mats of non-woven material. The process of making mats of non-woven material is well known. Methods of making glass fiber non-woven mats described in U.S. patent No. 4112174, 4681802 and 4810576, the entire contents of which is hereby incorporated into this description by reference.

One method of manufacturing a Mat of non-woven material, which can be used consists in forming a dilute aqueous slurry of fibers and coating the slurry on an inclined moving a wire sieve to remove from the slurry of water and formation of a wet nonwoven fibrous Mat, when this operation is performed on machines, for example, Hydroformer™manufactured by Voith-Sulzer of Appleton, Wis., or on machines Deltaformer™, the production is possible by Valmet/Sandy Hill from Glenns Falls, N.Y. After the fibrous suspension to be formed cloth, wet unrelated Mat is transferred to the second movable sieve mounted on a post application of a binder, where the Mat serves binder in aqueous solution. An aqueous solution of the binder is preferably applied by irrigation method or by dipping and spinning. The excess binder is removed, and the wet Mat is transferred onto the conveyor, which moves in convection ovens, where unrelated wet Mat is dried and cured, binding the fibers of the Mat together. The Mat may be fully cured or dried only to the stage of "In". In the drying and curing oven the Mat is heated to a temperature of 350°F (about 176,7°C), but this value can vary from 210°F (about 98,8°C) prior to any high temperature, which will not lead to the destruction of the binder or, if you want to get the curing stage, prior to any high temperature, which will not lead to the curing of the binder above parameters, typical for this stage. Processing time at these temperatures usually do not exceed 1-2 minutes and often less than 40 C. During curing of the binder to the stage "B", the lower the temperature used for curing, the more time is needed to achieve the curing stage, although typically the temperature is chosen so that the binder has reached the stage In" no more h is m in a few seconds.

Panel flooring can be formed from a Mat of non-woven fabric and wooden sheet items, by mounting Mat of non-woven material to the outer surface of the wood sheet product. Mat of non-woven material can be fastened to the wood sheet product either after or during the manufacture of the wood sheet product. When using pre-finished wood sheet product and a Mat of non-woven material that is completely overide (i.e, when the Mat is not in the condition stage "B"), for bonding pre-finished wood sheet product and a Mat of non-woven material can be applied adhesive, applying a pressure and temperature sufficient for curing of the adhesive. When using pre-finished wood sheet product and a Mat of non-woven material in the stage status "In the" pre-finished wood sheet product and a Mat of non-woven material, a binder which is in a state of stage "B", put in contact with each other and subjected to pressure and heat sufficient to bond the Mat and wood sheet product and for the final curing of the binder in the Mat of non-woven material.

Panel flooring can also be formed during the manufacture of wooden sheet products, such as OSB, which contain wood particles and a binder, curing at elevated temperature and pressure. During the formation of such a wood sheet product composition comprising a mixture of wood particles and a binder, formed into oriented or not oriented Mat, which is then affected by the heat and pressure sufficient to cure the binder and the formation of pre-finished wood sheet product. The particles can have any shape, including, without limitation, shavings, chips, fibers, flakes, pellets, filaments, and combinations thereof. A binder used for bonding wood particles with each other can be any binder that connects the particles with each other for forming a wood sheet product, under heat and pressure, including, for example, phenol-formaldehyde resin, the resin from formaldehydefree, melamineformaldehyde resin, etc.

For forming panels of the flooring during the manufacture of the wood sheet product (and not after completion of the manufacture of wooden sheet products) form a composite Mat, using at least one Mat of non-woven material and a composition comprising wood particles and a binder. Composite contains (1) a Mat formed from this composition, having a first outer surface and second outer surface, and (2) a Mat of non-woven material, antechinuses with the first outer surface of the Mat, formed from this composition. If obtaining composite Mat together with the composition are two Mat of non-woven material, such a composite can contain (1) a Mat formed from the composition and having a first outer surface and second outer surface, (2) the first Mat of non-woven material in contact with the first outer surface of the Mat, made from the composition, and (3) a second Mat of non-woven material in contact with the second outer surface of the Mat, made of composition. Composite can be formed by forming a Mat from the composition and then by bringing into contact at least one Mat of non-woven material with one of the outer surfaces of the Mat formed from the composition or composite can be formed by forming a Mat from the composition when the composition is in contact with at least one Mat of non-woven material so that the Mat of non-woven material is in contact with the outer surface of the obtained Mat formed from the composition. After forming the composite is subjected to heat and pressure sufficient to form the panel flooring containing wood sheet product having a first outer surface, a second outer surface and edges (done is installed from the Mat, obtained from the composition), and the Mat or mats, non-woven fabric bonded to the outer surface or outer surfaces of the wood sheet product. That is, the composite is subjected to heat and pressure sufficient to create a ready/cured wood sheet product of the Mat formed from the composition, for bonding thereto of a Mat of non-woven material. Therefore, use only one operation exposure to heat and pressure, instead of forming a wood sheet product, using a single operation of applying heat and pressure, and then the second time be affected by heat and pressure to adhere the Mat of non-woven fabric to the wood sheet product. The pressing time, temperature and pressure used for the formation of wall sheathing panels may vary depending on the desired thickness and density of the panels used binder and from other variables.

When the panel flooring is formed using a single exposure to composite with heat and pressure, for the formation of such a panel flooring, you can use the mats of nonwoven material in the stage status to "In" or fully cured mats of non-woven material. When the composite material is used, the Mat is C non-woven material in a state of stage "B", usually no additional adhesive or binder for bonding the Mat of non-woven fabric to the wood sheet product during a single exposure to heat and pressure (although such additional adhesive or binder may optionally be used); the heat and pressure that affect composite, sufficient to fully cure the binder in the Mat of non-woven material, which is in the state stage, and to stick Mat of non-woven fabric to the wood sheet product. When used fully cured Mat of non-woven material (i.e., when the Mat of non-woven material is not able to stage "B"), you can use additional glue or binder for bonding the Mat of non-woven fabric to the wood sheet product, which is formed by single exposure to heat and pressure; the heat and pressure that affect composite, sufficient to complete the curing of this additional adhesive or binder and bonding Mat of non-woven material to the finished wood sheet product. Such additional adhesive or binder may be added between the Mat formed from the composition (i.e. a Mat containing wood particles and binder), and a Mat of non-woven material; they can before alatise in the composition prior to the formation of a Mat, or they can be added in a Mat of non-woven material.

Methods of making mats of non-woven material in a state of stage "B" is described in U.S. patent No. 5837520, 6331339 and 6303207 and in published patent application U.S. No. 2001/0021448, the contents of which are incorporated into this description by reference. Methods of making nonwoven mats using a binder that does not contain formaldehyde and wood laminates using such mats are described in published patent application U.S. No. 2003/0008586, the contents of which are incorporated into this description by reference.

Mats of non-woven material designed for use in panels flooring, are chosen so that they provide moisture resistance of the panels. In the present description the terms "resistance" panel flooring and moisture resistant panel flooring means that the resistance of the panel exceeds (1) the moisture resistance of the wood sheet product, only one panel flooring (i.e. without one or more of a Mat of non-woven material that is adhered to the wood sheet product, and/or (2) the moisture resistance of the wood sheet product of the same type used in the panel flooring, the size of which is comparable to the size of the finished panel flooring (i.e. the same size as the panel flooring). Such resistance may be attached to the panels of flooring in different ways, for example, (1) due to the binder in the nonwoven material, (2) coating a water-repellent agent (or waterproof coating) on a non-woven material, (3) water-repellent agent (or waterproof agent)added to a binder in the formation of non-woven Mat, and/or (4) by adding waterproof (or water resistant) fibers (such as polyester fibers in the nonwoven Mat. You can use other ways to make the panels flooring water-repellent properties. Making moisture-resistant panels flooring can also be added or improved properties of resistance to mold and mildew in the panels of the flooring.

In addition, the mats of non-woven material can increase the strength (i.e. resistance to bending), dimensional stability and/or fire panels flooring compared with panels consisting only of the wood sheet product. That is, the Mat(s) of the nonwoven material can be chosen so that one or more of the properties panel flooring had better performance compared to the wood sheet product sheathing panels of the floor without one or more non-woven Mat adhered to the wood sheet product.

Moreover, the mats of non-woven material designed for use in panels of flooring, you can choose so that they can ensure ovalicin the Yu strength (for example, Flexural strength or resistance to puncturing), increased dimensional stability, high resistance to mould, high fire resistance and/or reduced weight panels flooring compared to the wood sheet product of the same type used for the panels of the flooring, and having dimensions comparable to the dimensions of the finished panel flooring (i.e. compared to the wood sheet product of the same size as the panel flooring).

Further, the increased rigidity of the new flooring with the upper and lower shells of the nonwoven material can increase the interval while maintaining the flatness of the floor, able to carry a load without showing waviness. Tense shell also reduce the amount of swelling that occurs when there are physical limitations on the edges. This resolves the problem, common to outdoor CPEs, where unpackaged or trimmed edges absorb moisture and swell, creating an uneven and visually unacceptable surface of the floor.

In addition, the coating one or both sides of the wooden flooring with a non-woven membrane, consisting mainly of inorganic fibers, increases the resistance and prevents the spread of flame. Additional advantages, which create non-woven membrane, attached to a wooden panel is m flooring are the absence of peeling and dust. Panel flooring with attached two sides of the shell is not prone to peeling compared to the standard GSP.

Trim the top and bottom surfaces of such panels flooring can be significantly changed by selecting different nonwoven materials. To obtain a smooth surface usually GSP is polished, while the shell of non-woven fiberglass Mat in stage "B" forms a smooth surface without polishing.

EXAMPLE

The present invention will be further described with reference to an illustrative example which is not limiting.

Were made of different types of test plates subjected to tests to measure their strength and moisture resistance. In short, the test plate contained shaving, stove mats, non-woven fabric bonded to both outer surfaces of the plates. Oriented strand Board (OSB) without mats, non-woven fabric was used as a control sample and tested for the same parameters as the test plate.

A. Plate

Tested the following types of plates, in parentheses after the description of plate type specified number plates made:

(1) BSA lined with fiberglass mats made using formaldehyde furfuryl sleep is the (made 3 plates);

(2) BSA lined with fiberglass mats made using formaldehyde furfuryl alcohol and with the addition of a binder sterilizating water-repellent agent (made 2 plates);

(3) BSA lined with fiberglass mats made using phenol-formaldehyde binder (made 2 plates);

(4) GSP lined with mats of polyester fibers obtained spunbond method with phenol-formaldehyde binder (made 2 plates);

(5) PCB without facing non-woven mats (i.e. control) (made 2 plates).

Non-woven mats stage "B", used for plates, formed using conventional wet process calculations. The density of the glass mats used in the test samples was 6 pounds per 100 square feet (about 0,293 kg/m2), while the mats contained about 60% of the binder and 40% fiber. For mats used fibers made of E-glass with an average diameter of 16 μm and an average length of 1 inch (25.4 mm). Glass mats, in which a binder was added sterilizovanny water-repellent agent, contained about 40% of the fibers 56% binder and 4% water-repellent agent. Density mats of polyester staple fibres obtained spunbond method, was

120 g/m2and phenol-formaldehyde binder was added in to the Icesave 3 pounds per 100 sq. ft. (about 0,147 g/m 2). Polyester fiber used in these mats, had a density of about 4 denier per foot (0.3048 m).

The test plate and oriented strand control plates were made using a moulding box size 34×34 inches (863,6×863.6 mm). For formation control PCB composition of wood chips and binder manually formed into mats using moulding boxes. To obtain test plates composition of wood chips with a binder and nonwoven mats in a stage of "In" manually formed into composite mats, use molding box so that the Mat formed from the composition was placed between two non-woven mats. Manually formed mats were then merged by the usual pressing cycle, used for the manufacture of OSB. All parameters were based on typical commercial values for OSB and shown in the table below.

Specified dimensions, inches (mm)28×h,437 (711,2×711,2×11,099)
Density, pounds per cu.ft (kg/m3)39,0 (624,72)
The design of the MatOriented, the ratio of the surface layer to the inner layer - 50/50
Resin typeSurface layer: liquid phenolformaldehyde
Inner layer: isocyanate resin (MDI)
Type waxCrude paraffin 1% solids
Temperature pressing, °F (°C)400 (204,44)

Panels were merged to a predetermined thickness 0,437 inch (11,099 mm). The panel was merged with about 150 at a temperature of pressing 400°F (204,44°C). The obtained plates were cut to size 28×28 inches (711, 2×711, 2 mm).

C. Measurement

In the test plates of each type, and the control plate to evaluate the strength and moisture resistance were measured by the following parameters (in brackets after the description of the test specified number of samples on the plate):

(1) tensile strength in bending (PPI) in the parallel direction BSA (PPI Pairs) in pounds per square inch (tested 3 samples on the plate);

(2) the tensile strength in bending (PPI) in the perpendicular direction BSA (PPI Lane) in pounds per square inch (tested 3 samples on the plate);

(3) modulus of elasticity (MU) in the parallel direction BSA (MU Pairs) in pounds per square inch (3 samples on the plate);

(4) modulus of elasticity (MU) in the perpendicular direction BSA (MU Per) in pounds per square inch (3 samples on the plate);

(5) inside the inner connection in pounds per square inch (6 samples on the plate);

(6) durability communication in a parallel direction BSA, measured as the tensile strength in bending after 2 hours boiling plate, in pounds per square inch (3 samples on the plate);

(7) the durability of communication in the perpendicular direction BSA, measured as the tensile strength in bending after 2 hours boiling plate, in pounds per square inch (3 samples on the plate);

(8) swelling in thickness after 24 hours soaking of the sample plate in the water in percent (2 of sample on the plate);

(9) water absorption after 24 hours of soaking the sample in water in percent (2 of sample on the plate);

(10) the linear elongation in the parallel direction BSA from dry conditions after the furnace for saturation using impregnation in vacuum in percent (2 of sample on the plate);

(11) a linear extension in the perpendicular direction from GSP dry condition after the furnace for saturation using impregnation in vacuum in percent (2 of sample on the plate);

(12) the transmission of water vapor in permag (unit permeability) (2 sample on the plate).

Each of the parameters (1)to(11)above was evaluated according to the test standard 0437.1-93 Canadian standards Association. The transmission of water vapor (parameter (12)above) was measured by a standard method E American society for testing and materials (ASTM).

C. Results

Results the ATA parameter measurements for different plates shown in figure 1, where the results of the tests, the standard deviation of tests and indicating whether it has improved the performance for each type of plates in comparison with the control sample (i.e. the base value for BSA) at a statistically significant level (i.e., level of confidence 95%), using T-test Student (instructions are given as "Yes" or "No"). Figure 1 for tensile strength in bending (PPI) and elastic modulus (MU) also indicate whether the reduction of scatter between the results for each type of plates and the results for the control samples (i.e. the base value for BSA) statistically significant with a confidence level of 95%, using test Chi-square (in the form of "Yes" and "No", "Yes" indicates that the scatter of the test results decreased at a statistically significant level compared to the scatter in the control plates OSB). Finally, figure 1 also lists some of the minimum standard of the Canadian standards Association for cap.

The results illustrate the increased strength and moisture resistance test plates. Figure 2 presents the results, showing a statistically significant improvement in strength in the perpendicular direction and the moisture resistance test plates as compared to the control PCB.

Figure 3-10 shows the results of test plates for durability and moisture resistance. Description the test is in, in bold indicate those tests in which the listed test plate had a statistically significant difference from control plates with a confidence level of 95%.

Although the present invention has been described in detail and with reference to specific options, specialists obviously, it is possible to make various changes or modifications not beyond the nature and scope of the invention.

1. The way to ensure the water resistance of the floor structure of the building, including the stages at which
(a) create one or more moisture-resistant panel flooring, each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, in which each panel is produced through action on the wood sheet product and a Mat of non-woven material in the stage status "In the" warmth and pressure sufficient to cure the binder in the material and to adhere the Mat to the wood sheet product, and the Mat in the status stage "B" contains fiber, related to each other binder resin, which overiden only partially;
(b) install the panel (s) flooring on the floor structure of the building such that the nonwoven Mat of each panel faces upward.

2. The method according to claim 1, additionally containing phase, in which over a non-woven Matamata) panels(panels) flooring install the flooring.

3. The method according to claim 1, in which the fibers are fiberglass, and the Mat is non-woven fiberglass Mat.

4. The method according to claim 1, wherein the fibers are polyester fibers and the Mat is non-woven Mat of polyester fibers.

5. The method according to claim 1, in which the wood sheet product chosen from the group consisting of BSA, wood particle Board, wood-fiber plate, plywood and solid wood-fiber plate.

6. The method according to claim 1, in which the binder resin is chosen from the group consisting of a resin based on furfuryl alcohol resin-based phenolformaldehyde, resin-based melamineformaldehyde, and mixtures thereof.

7. The method according to claim 1, in which each of the panels of the flooring further contains a second Mat of non-woven material that is adhered to the wood sheet product so that the second Mat of non-woven fabric was turned down when panel flooring installed on a floor construction, each panel is made by exposure to wood sheet product and a Mat of non-woven material in the stage status "In the" warmth and pressure sufficient to fully cure the binder in the material and to adhere the Mat to the wood sheet product, and the Mat in the status stage "B" contains fibers that are related to each other binder resin, which is overide is but only in part.

8. The method according to claim 1, further comprising the step, in which over mats, non-woven fabric panels flooring install the flooring.

9. The floor construction of the building containing
(1) set of water-resistant panels flooring, attached to the rafter farm building as a base layer, each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, and each panel is manufactured by affecting the wood sheet product and a Mat of non-woven material in the stage status "In the" warmth and pressure sufficient to fully cure the binder in the material and to adhere the Mat to the wood sheet product, and the Mat in the status stage "B" contains fiber, related to each other binder resin that overiden only partially, and the nonwoven Mat of each panel faces upward, and (2) the material of the floor attached on top of the mats of non-woven material of the base layer panels of the flooring.

10. The way to ensure the water resistance of the floor structure of the building in which
(a) create one or more moisture-resistant panel flooring, each panel contains a wood sheet product; a Mat of non-woven material that is adhered to the wood sheet product, and organizescooperation floor, glued to the Mat of non-woven material; and
(b) install the panel (s) flooring on the floor structure of the building so that the Mat of non-woven material coated with the coating facing upward.

11. The method according to claim 10, in which a Mat of non-woven material is chosen from the group consisting of non-woven Mat of glass fibers and non-woven Mat of polyester fibers.

12. The method according to claim 10, containing phase, in which over a non-woven Mat (mats) coated with the coating panel (panel) flooring install the flooring.

13. The method according to claim 10, in which the wood sheet product chosen from the group consisting of BSA, wood particle Board, wood-fiber plate, plywood and solid wood-fiber plate.

14. The method according to claim 10, in which the Mat includes a non-woven Mat of glass fiber, and one or more of the panels of the flooring is made through action on the wood sheet product and a Mat of non-woven material in the stage status "In the" warmth and pressure sufficient to complete the curing of the binder in the material and to adhere the Mat to the wood sheet product, and the Mat in the status stage "B" contains fiber, related to each other binder resin, which overiden only partially.

15. The method according to 14, in which the binder resin is chosen from the group consisting of a resin based on furfuryl alcohol, resin-based phenolformaldehyde, resin-based melamineformaldehyde, and mixtures thereof.

16. The method according to claim 10, in which the Mat contains fiberglass non-woven Mat containing glass associated binder, nesteriak formaldehyde.

17. The method according to claim 10, in which an organic waterproof coating selected from the group consisting of asphalt, organic silicone, rubber and polyvinyl chloride.

18. The method according to claim 10, in which each of the panels of the flooring further contains a second Mat of non-woven material that is adhered to the wood sheet product so that the second Mat of non-woven fabric was turned down when panel flooring installed on the floor structure.

19. The floor construction of the building that contains many water-resistant wall panels, flooring, attached to the frame of the floor of the building as a base layer, each panel contains a wood sheet product, a Mat of non-woven material that is adhered to the wood sheet product, and an organic waterproof coating glued to the Mat, non-woven fabric with waterproof coating of each panel facing up, and the material of the floor attached on top of the mats of nonwoven base layer panels flooring coated with the coating.

20. The way to ensure moisture resistance within Anna wall of the building, in which
(a) make one or more moisture-resistant panel flooring, each panel contains a wood sheet product and a Mat of non-woven material that is adhered to the wood sheet product, where each panel is made by
(1) forming a composite Mat containing
(i) the Mat is formed from a composition comprising wood particles and a binder, the Mat has a first outer surface and second outer surface,
(ii) a Mat of non-woven material in contact with the first outer surface of the Mat formed from the composition; and
(2) impact on composite with heat and pressure sufficient to form the panel flooring containing wood sheet product having a first outer surface, a second outer surface and edges, with a Mat of non-woven material bonded to the first outer surface of the wood sheet product, and
(b) install the panel (s) flooring on the floor structure of the building so that the Mat of non-woven material of each panel facing up.



 

Same patents:

FIELD: construction industry.

SUBSTANCE: compensation profile has two profile elements. There provided are attachment devices of each profile element to the corresponding floor or wall profiles. Profile elements are made with possibility of at least partial displacement relative to each other in the direction perpendicular to their edges; at that, the surface lying opposite the base actually forms common plane with upper sides of floor or wall panels connected thereto.

EFFECT: reducing labour input when laying compensation profile.

13 cl, 1 dwg

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to floor panel. Each panel on longitudinal or transverse edge has a comb protruding beyond this longitudinal or transverse edge, and slot which corresponds to comb of adjacent panel on opposite longitudinal or transverse edge, being surrounded with side sections of panel. For fixation of two adjacent panels inserted into each other on at least one surface of comb in separate areas, at least one protruding fixing element is provided, and accordingly, in area of panel section (-s) corresponding to this fixing element with panels being joined to each other, there is a deepening (-s) provided as corresponding to fixing element (-s), besides area (B) of comb that bears fixing element and/or at least one of comb areas and sections of panel, which in case of comb insertion in slot prior to fixing element entry into deepening are in contact, accordingly is/are arranged as elastic so that this elasticity is more than elasticity of fixing element.

EFFECT: simplified assembly of panels.

23 cl, 14 dwg

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to floor boards of plank materials with mechanical connecting systems. Floor boards are described, which are equipped with mechanical connecting system comprising flexible rabbet in slot providing for displacement, which is displaced in process of motion in case of vertical folding. Besides rabbet making is described, as well as manufacturing and installation methods.

EFFECT: improved accuracy of floor boards installation and operational reliability of floor.

38 cl, 24 dwg

Floor panel // 2372456

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to floor panel (1) of rectangular shape with base (2) of wood material and with decorative layer on upper side of panel. Side edges of panel are arranged as pairwise opposite to each other. Pair of side edges has geometrically closed responsive hook-like profiles: receiving hook (9), inverted to lower side of floor panel, and also fixing hook (10) on opposite side edge, inverted to upper side of floor panel (1). Both hooks have peripheral side surface, at least with one protruding fixator (13, 14), with which receiving pocket (21, 22) is matched in responsive receiving hook (9), and fixing hook (10) by means of fixing motion perpendicularly to plane of floor panel (1) is fixed with receiving hook (9). Between fixator (13, 14) of fixing hook (10) and upper side of floor panel there is distance provided equal at least to one third of the whole thickness of panel.

EFFECT: prevention of crack formation near decorative layer of panel.

8 cl, 4 dwg

FIELD: construction.

SUBSTANCE: laminated floor boards contain decorative patterns; surface finishes, which are mechanically embossed with matching; deepened perimeters and fixation mechanisms. Neighboring boards that are actually evened relative to each other makes it possible to create matched impressed patterns passing actually continuously through neighboring floor panels. Separate boards in flooring system may contain at least one incomplete subpanel having decorative pattern and/or impressed surface finish (i.e. pattern), which is complementary to pattern of adjacent incomplete subpanel or board. Each board may include edge patterns located near some part of board edge, and at least one main pattern, adjacenebt with edge patterns. Edge patterns on board or boards in flooring system are actually identical to each other. Main patterns create an actually continuous pattern with adjacent edge pattern on a separate board.

EFFECT: simplified assembly of floor and prevention of its premature wear.

22 cl, 19 dwg

FIELD: construction.

SUBSTANCE: decorative surfaces of panels are visually matched to each other at least on one side, so that in process of transition from one installed panel to another neighboring installed panel, a continuous pattern of decor is created. Continuous pattern in context of the present invention is represented as wood-type decor, when texture of reproduced wood is not visually interrupted in transition from one installed panel to neighboring installed panel, therefore, there is no displacement between according specified textures. The same is effective for other decors, for instance stone-type decors.

EFFECT: improved quality of coating.

9 cl, 4 dwg

FIELD: construction industry.

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EFFECT: improving the floor operating reliability.

6 cl, 4 dwg

Flooring board // 2368745

FIELD: construction.

SUBSTANCE: invention is related to the field of construction, in particular to floor coatings in regions with high humidity. Flooring board of hard wood includes base in the form of substrate and front layer in the form of lamel combined with it. Substrate on the side of lamel installation is arranged with grooves of dovetail type, in which according longitudinal inserts-slot wedges are fixed. Lamel, substrate and inserts-slot wedges are made of the same material. Grooves are arranged evenly along the whole length of substrate with identical pitch parallel to each other at the sharp angle to one of its lateral sides. Beginning of every groove installation pitch on one lateral side of substrate matches end of previous groove installation pitch on its opposite side.

EFFECT: higher resistance of flooring board to casting due to wedging of substrate with inserts-slot wedges.

8 cl, 2 dwg

FIELD: construction.

SUBSTANCE: invention concerns construction, particularly supporting structure for raised floor. Supporting structure includes multiple supports and stringers supporting floor panels and mounted between neighbour supports. Each support includes a strut with top support part with radial supporting lobes at the top end of strut and with a plate at the bottom end of strut. Each stringer has mainly "П"-shaped cross-section with two parallel side parts and link part resting against radial lobe of top support part. At least one side part at the end of stringer features cavity close to link part and guide line leading from distal edge of side part to the cavity. Cavity and guide line are formed by indent in the internal surface of side stringer part, with guide line running away from side part edge and entering cavity.

EFFECT: enhanced rigidity of support.

10 cl, 3 dwg

FIELD: construction.

SUBSTANCE: invention is related to construction of wooden structures and may be used in construction of wooden decks, floors or fences. Method includes manufacturing of interlocking items, for which slots are arranged at end side of one of connected items in vertical plane with depth equal to thickness of interlocking device vertical wall. Then they are installed in slots aflush, and another item is joined by end to interlocking item, and thus all wooden items are connected serially one after another. Besides, each subsequent row of interlocking items is displaced relative to the previous one by half of pitch between them. Device for connection of wooden parts, which is made of metal, has vertical wall with height that is equal to thickness of connected items. Plates are fixed rigidly and coaxially to the wall perpendicularly on both sides, and are sharpened on one side with width of at least 1-2 thicknesses of joined items and length equal to width of joined items. Pitch of interlocking items installation makes at least 1.618 of their length, moreover, round openings are arranged for fastening elements on vertical wall of interlocking item.

EFFECT: higher strength of connection.

2 cl, 3 dwg

Sectional floor // 2245971

FIELD: building, particularly floor structures in rooms adapted for electronic and electrical equipment installation.

SUBSTANCE: floor comprises height-adjustable stands with support plates to which beams with panels are connected. Each support plate has slots located in crosswise manner and opened from peripheral part thereof. Support plate is provided with covering plate having central orifice, cuts arranged in crosswise manner along its perimeter and radial extensions dividing covering plate into four equal segments. Panel plate corners rest upon segment surfaces. Covering plate has metal strips crossing at the 90o angle and disposed from lower side thereof. Two pair of slots are formed between covering plate cuts and extend in annular direction. Metal strip ends passing through above slots are bent on outer side of covering plate.

EFFECT: increased operational performance.

7 cl, 3 dwg

FIELD: building, particularly adjustable floor supports.

SUBSTANCE: support comprises combined post including rod with outer thread connected to circular ring support plate and hollow tubular member connected to lower plate secured to floor underlay. Support plate has pair of slots arranged along plate perimeter in crosslike manner and provided with covering plate having central orifice. Covering plate comprises radial extensions for floor panels installation and cuts arranged in crosslike manner to provide free beam installation in mating slots of support plate. Hollow tubular member of post has inner thread engaging mating rod thread. Hollow tubular member diameter is equal to 0.2 - 0.3 of support plate diameter. Covering plate is provided with two metal strips crossing each other in central orifice area thereof. Two opposite pair of slots are made between covering plate cuts. Ends of metal strip pass through above slots and are bent on outer surface of covering plate.

EFFECT: improved service performance.

6 cl, 4 dwg

FIELD: building, particularly adjustable supports for raised floor or double-floor structures.

SUBSTANCE: set comprises threaded rod with nut screwed on rod, short cylindrical member connected to plate by one end thereof and replaceable cylindrical head having inner conical surface. Difference between head end diameters is 0.4 - 0.6 mm. Method of support assembling involves placing cylindrical member on floor; putting replaceable head on cylindrical member and inserting threaded rod in head.

EFFECT: extended range of technical capabilities along with maintaining high connection reliability.

7 cl, 3 dwg

FIELD: building units, particularly composite raised floors made of panels and defining space for laying electric cables and/or providing ventilation.

SUBSTANCE: support comprises rod fixedly secured to support panel and body formed as sleeve and having support flange on the first end and cylindrical flange on another one. Cylindrical flange may be axially displaced and fixed on rod. Sleeve side has part with curvilinear surface extending over at least half of sleeve length defined by flanges. Curvilinear surface is formed by rotation of second-order line segment around support axis.

EFFECT: increased strength characteristics, particularly directional stability of support body subjected to axial alternating loads when temporary compression force is applied to support body.

19 cl, 6 dwg

Raised floor panel // 2250316

FIELD: building, particularly raised floor panels installed on adjustable supports and used for assembling floors in rooms equipped with computer or other electronic devices.

SUBSTANCE: panel includes inner load-bearing layer of resin-bonded chipboard material, upper and lower layers of sheet metal. At least two opposite sides of inner load-bearing layer are impregnated with primer and aqueous glue is applied to the sides. Above sides are then covered with polyvinylchloride coating. Primer and aqueous glue are acrylic-based and include dag. Inner layer comprises at least two layers with increased density cooperating with upper and lower panel layers. Electric resistance between outer surfaces of opposite panel ends covered with polyvinylchloride coating is not more than 0.1 Ohm.

EFFECT: improved service properties and increased panel rigidity.

9 cl, 3 dwg

FIELD: building, particularly raised floors in offices adapted for heavy equipment installation.

SUBSTANCE: panel includes tray-like metal member forming panel base and side walls having folded inwards edges extending in parallel to panel base. Arranged inside tray is load-bearing layer covered with metal sheet. Load-bearing layer has non-uniform density along height thereof and includes groove extending along layer perimeter. Metal sheet has peripheral extension formed in lower side thereof and cooperating with groove. Folded edges are connected with metal sheet in area of contact between extensions and grooves, outer surfaces thereof are in plane with outer surface of metal sheet connected to inner load-bearing layer by depressions and/or glue.

EFFECT: increased load bearing capacity and rigidity.

8 cl, 3 dwg

Raised floor panel // 2250318

FIELD: building, particularly raised floors for offices equipped with computers.

SUBSTANCE: panel includes bearing plate of timber-based material enclosed with metal shell from all plate sides. Shell is formed as two boxes, namely upper and lower ones. Each box has rectangular part defining upper and lower panel sides, and side edges folded along rectangular part perimeter. Folded side edges extend over half of end panel side height. Area of rectangular part of upper box exceeds that of lover part by (4-5)δ value, where δ is thickness of upper box. Folded side edges of upper and lower boxes are equal in height. End parts of adjacent side edges of each end plate side are pressed together in overlapped manner.

EFFECT: improved antistatic properties of raised floor, increased reliability of panel connection.

7 cl, 2 dwg

False floor panel // 2252993

FIELD: building units, particularly false floors elevated above base and supported by adjustable supports.

SUBSTANCE: false floor defining a chamber for communication lines consists of panels. Floor panel comprises inner load-bearing layer of flakeboard, upper decorative layer of vinyl plastics and lower layer of sheet material. At least two opposite side surfaces of inner layer are impregnated with priming agent and aqueous adhesive is applied on above surfaces to which polyvinylchloride coating is further connected. Priming agent and aqueous adhesive are formed on acrylic base and dag is added to above substances. Inner layer includes at least two high-density sub-layers contacting with upper and lower panel layers. Electrical resistance between outer surfaces of opposite panel ends covered with polyvinylchloride coating is not more than 0.1 ohm.

EFFECT: increased strength of floor panel.

10 cl, 3 dwg

FIELD: building, particularly floor members for underfloor heating/cooling systems.

SUBSTANCE: floor member comprises sheet with at least one groove, heat-conducting layer extending over one main sheet surface and along each groove side to form depression for heat-conducting wire receiving opened from top side thereof. Depression tightly encloses wire and passes over half of cross-sectional perimeter thereof. Upper wire side is flush with upper sheet surface or located below thereof. Sheet has thin foldable foil with thickness of less than 200 μm.

EFFECT: reduced floor member thickness, increased simplicity of floor member dimension selection by cutting foil inside the groove.

6 cl, 10 dwg

FIELD: building, particularly floor, ceiling and wall covering.

SUBSTANCE: support includes square lower bearing plate made of flexible metal sheet material and upper bearing plate. The plates have central orifices. Central orifice of lower plate comprises rod receiving recess and is surrounded with annular depression having depth not exceeding sheet thickness. Central orifice of upper plate comprises flange. The plates are provided with radial grooves located so that convex surfaces thereof face each other. Depression and grooves have oval cross-section and oval or wavy cross-sections in connection areas in-between. Upper plate is made of the same material as the lower one. Orifices for fastening members receiving formed in lower plate and holes for gasket fixing made in upper plate are coaxial and created along stiffening ribs extending along square diagonals.

EFFECT: increased support resistance and strength thereof along with reduced material consumption, decreased mass and simplified manufacture.

14 cl, 6 dwg

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