Mixed yarn friction uses

 

Mixed staple yarn may be used for the manufacture of fabrics, under load, and bushings in miscorrection products obtained by winding, textile bearings and seals and can improve the friction characteristics while simplifying the manufacture of yarn. Staple yarn contains a mixture of 35-90 wt.% fluoropolymer fibers and 65-10 wt.% one or more kinds of mixed fiber, which does not contain cotton. Fluoropolymer selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers. The yarn may contain yarns of continuous filament fibers, and a mixture of staple fibers, where the staple fibers contain 35-90 weight. % fluoropolymer fibers and 65-10 wt.% one or more kinds of mixed fibers, except of cotton fiber. Staple fiber, essentially encircle one or more strands of yarn of continuous filament fibers or formed on top of them, or one or more strands of yarn from nepreryvnog is lways;">

The invention relates to staple yarn and it made of fabric, miscorrection product, bearing, bushing and seal.

Fluoropolymer fiber is known as friction modifiers in many different end applications. However fluoropolymeric fibers have a low modulus of tensile elasticity and are characterized by poor adhesion to other polymers; they are products with a relatively high value, and some fluoropolymers are characterized by a tendency to plastic deformation. When used as a friction modifier in the industry, such as bearings, fluoropolymer fibers typically have one of the following forms: yarn of continuous filament fluoropolymer fiber is wound around the surface of the product or part, the continuous filament yarn from fluoropolymeric fibers, knitted or woven with obtaining fabric, or yarn of continuous filament fluoropolymer fibers are crushed to obtain a very short staple, which is then mixed with the polymer and form product or part.

Although fluoropolymer staple yarn and possesses advantages in comparison with the yarn the yarn. For commercially acceptable fluoropolymer staple yarn can be developed yarn and fabrics, which are using different lengths of shtabelirovanija staple fiber and which meet the needs of industrial applications, reducing friction.

Known for having a good elasticity of the fibrous material obtained by mixing less than 30% PTFE fibers or strands with natural and/or synthetic fibers (JP 01-139833 And 01.06.1989).

Fabrics and linen, made of fibrous material according to this publication, have good insulating ability, and superior properties, thus preventing the sliding of the fibers in the bundles.

Known staple fibre yarn containing a mixture of 50 wt.% fluoropolymer fibers and 50 wt.% cotton fiber, and is made from this yarn fabric for use under load (US 3131979 And 05.05.1964).

Known miscorrection the product obtained by winding and containing yarn with a mixture of 50 wt.% fluoropolymer fibers and 50 wt.% cotton fiber, yarn, containing yarn of continuous filament fibers, and a mixture of staple fibers, containing 50 wt.% fluoropolymer fibers and 50 wt.% cotton in optomega fiber, and of yarn containing yarn of continuous filament fibers, and a mixture of staple fibers, containing 50 wt.% fluoropolymer fibers and 50 wt.% cotton fiber (US 3560065 And 02.02.1971).

It is also known seal, made of staple yarn, containing a mixture of fluoropolymer fibers and two types of fiber (EP 0585874 A1, 09.03.1994).

In these solutions limited selection of fibers for the manufacture of yarn and, accordingly, the possibility of its use.

The task of the group of inventions is the creation of a staple yarn having improved frictional characteristics and obtained from a variety of fibers, and under load of products that can be manufactured using this yarn as a component.

This task is solved in that staple yarn comprises a mixture of from 35 to 90 weight percent fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fiber, which does not contain cotton.

The mixture may contain from 35 to 75 weight percent of the fluoropolymer and from 65 to 25 weight percent of mixed fibers.

Fluoropolymer selected from the group consisting of polytetrafluoroethylene, fluorinated olefinic polymers, copolymers of thecraft the Mer perftorirovannogo simple ether and fluorinated olefin terpolymers.

Mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers, cellulosic man-made fibers and wool, polyparaphenyleneterephtalamide, polymethacrylamide, poliparafenilenvinilena, ultra-high molecular weight polyethylene, polyesters with an anisotropic melt, carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

The mixture may contain from 35 to 65 weight percent of the fluoropolymer and from 63 to 35 weight percent of mixed fibers.

Fluoropolymer selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers.

Mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers, cellulosic man-made fibers and wool, polyparaphenyleneterephtalamide, the x polyesters with an anisotropic melt carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

Mixed fiber is polyparaphenyleneterephtalamide or polymethylpentene.

Miscorrection the product obtained by winding, contains yarn, containing a mixture of from 35 to 90 weight percent fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fiber, which does not contain cotton fibers, or a mixture containing from 35 to 75 weight percent of the fluoropolymer and from 65 to 25 weight percent of mixed fibers, or a mixture containing from 35 to 65 weight percent of the fluoropolymer and from 65 to 35 weight percent of mixed fibers.

Fabric for use under load contains yarn, containing a mixture of from 35 to 90 weight percent fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fiber, which does not contain cotton fibers, or a mixture containing from 35 to 75 weight percent of the fluoropolymer and from 65 to 25 weight percent of mixed fibers, or a mixture containing from 35 to 65 weight percent of the fluoropolymer and from 65 to 35 weight percent of mixed fibers.

The yarn may contain yarns of continuous is Acento fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fibers, in addition to the cotton fiber.

Staple fiber essentially encircle one or more strands of yarn of continuous filament fibers or formed on top of them.

One or more strands of yarn of continuous filament fibers essentially encircle staple fiber.

Bearing, bushing and seal are made of staple yarn, containing a mixture of from 35 to 90 weight percent fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fiber, which does not contain cotton.

The mixture may contain from 35 to 75 weight percent of the fluoropolymer and from 65 to 25 weight percent of mixed fibers.

Fluoropolymer selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers.

Mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers, cellulosic man-made fibers and wool, polypropene polyethylene, polyesters with an anisotropic melt, carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

The mixture may contain from 35 to 65 weight percent of the fluoropolymer and from 63 to 35 weight percent of mixed fibers.

Fluoropolymer selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers.

Mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers, cellulosic man-made fibers and wool, polyparaphenyleneterephtalamide, polymethacrylamide, poliparafenilenvinilena, ultra-high molecular weight polyethylene, polyesters with an anisotropic melt, carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

Mixed fiber is polyparaphenyleneterephtalamide or polymethylene, where the staple fibers contain from 35 to 90 weight percent fluoropolymer fibers and from 65 to 10 weight percent of one or more kinds of mixed fibers, except cotton fiber.

Staple fiber essentially encircle one or more strands of yarn of continuous filament fibers or formed on top of them.

One or more strands of yarn of continuous filament fibers essentially encircle staple fiber.

Under the "staple yarn" in connection with a synthetic fiber refers to the yarn, which is manufactured by stapulionis yarn of continuous filament fibers or continuous tow up to a certain length to obtain staple fibers and then processed in conventional equipment cotton system spinning with the formation of yarn from staple. The usual method used for the manufacture of staple fibers, includes a ring spinning, spinning with loosened the main thread and spinning through the air jet.

By "polymer" refers to polymers, such as polytetrafluoroethylene, referenced here as "PTFE", and polymers, known in General as fluorinated olefinic polymers, for example copolymers tetrafluorotrichloropropane simple ether (PFA) and performatively simple ether, fluorinated olefin of terpolymer, including terpolymer the above monomers and other co-polymers based on tetrafluoroethylene. In the present invention the preferred fluoropolymer is PTFE.

Fluoropolymer continuous thread may be formed in various ways depending on the specific desired fluoropolymer composition. Fibers can be formed by dispersion of the molding, that is, the dispersion of insoluble particles of fluorocarbon resin mixed with a solution of a soluble matrix polymer, and the mixture is then coagulated with the receipt of filaments in the extruded mixture in the coagulating solution in which the matrix polymer becomes insoluble. Insoluble matrix polymer can then be glomerulopathy and if you want to select. Alternatively, if the melt viscosity will be suitable filament may also be formed directly from the melt. Fiber can also be obtained by mixing the finely crushed powder of fluorocarbon resin with the additive that promotes extrusion, converting this mixture into a billet and extruding the mixture through a die to obtain fibers, the fibers are continuous filaments then steelroots to lengths shtabelirovanija in the range from 1.3 to 7.6 cm (0.5 to 3.0 inches). In the present invention, the preferred length shtabelirovanija is the value from 3.8 to 5.1 cm (1.5 to 2.0 inches). Linear density per filament may be in the range of from 0.11 to 16.7 dtex (from 0.1 to 15 denier).

Under the "mixed fiber" refers to publicly available fibers, including polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers; natural fibers such as cotton, pulp and chemical fiber and wool; fibers made from polymers with high performance characteristics, including polyparaphenyleneterephtalamide (PPD-T), polyparaphenylenes (VBOs), ultra-high molecular weight polyethylene (UHMWPE), polyesters with an anisotropic melt; and high modulus fibers such as carbon fiber, metal fiber and fiberglass, and any of the previously mentioned classes or types of fibers with special coatings, such as paramignya fiber with a metal coating. The length of the cut staple fiber in composite fiber can be equal to any of the values that will be compatible with the fluoropolymer staple. In the present invention, the preferred length shtabelirovanija equal to or less than the length forlano and mixed staple fiber are combined and processed into staple yarn using commonly used ways. For example, the required quantity of each staple fiber can be mixed and then loosen and brush with getting the card sliver. Carding the tape can then be pulled, and then reduce its thickness to obtain Rove and finally molded by a method of ring-forming staple yarn.

The yarn according to the present invention contains from 25 to 90 weight percent fluoropolymer fibers and from 75 to 10 weight percent of mixed fibers. The preferred weight distribution represents the content of the fluoropolymer from 35 to 75 percent by weight; the content of mixed fibers from 65 to 25 weight percent. More preferred weight distribution represents from 35 to 65% of fluoropolymer, from 65 to 35% mixed fibres. Advantages in terms of friction for fiber in practice be reduced, if the content of the fluoropolymer is less than 35 weight percent, in most cases industrial end use. When the content of the fluoropolymer over 90 weight percent to obtain suitable yarn from staple fiber is more difficult, because the cohesion between the filaments in the yarn beam is small. The yarn also becomes less efficient from a cost perspective. Preferred Sanogo fiber. Preferred mixed fiber is a fiber of a tough polyester.

The yarn according to this invention has a low coefficient of friction yarn - metal and allows for adjustment as the structure of the fiber, and the fiber content for the particular use under load. For example, the mixed fiber can be chosen in such a way as to compensate for the inherent fluoropolymer fiber disadvantage, such as low modulus when choosing as mixed fibers of high modulus fibers. If necessary, the yarn of continuous filament fibers can be added to staple yarn according to this invention to impart additional strength or durability. For example, one or more filament yarn of continuous filament fibers can be used as a frame thread with mixed staple fibers, essentially wrapped or molded on top of this frame threads. If the yarn with a very high strength is required improved frictional properties or the properties of the noise reduction, high strength filament yarn of continuous filament fibers can be twisted composition of staple fibers of the present invention. In alternative options of continuous filament fibers. One or more filament yarn of continuous filament fibers also can essentially wrap the threads of the mixed staple yarn. For example, a thermoplastic filament yarn of continuous filament fibers can wrap the thread fluoropolymer and thermoplastic mixed staple yarn, where the yarn yarn of elementary fibers would act as a sacrificial coating for staple yarn.

Similarly, selection of the structure of mixed fibers and/or the actual thread, for example, the length of the staple fluoropolymer or mixed fibres, the placement of the staple fibers in the structure of the yarn or twist of the yarn can be optimized to compensate for problems with shrinkage or adhesion, which, as you know, have a place for fluoropolymer fibers.

The yarn according to the present invention can be used in miscorrection products obtained by winding, or it can be made of fabric that will be used in many use cases, under load. For forms as yarn and fabric, it is important that the sizing for forming fibers on a mixed thread would be compatible with the fluoropolymer; i.e., coupling agents, applied to the mixed fiber, will not have otricatelniy the operating characteristics of the tissue will be obtained, if mixed thread will be a little or not at all sizing. The sizing used in the manufacture of mixed fibers may be removed by washing before the mixed yarn is combined with a fluoropolymer yarn.

The yarn according to this invention can be used in cushioning fabrics for rubber parts for eliminating noise in the suspension parts, such as bushings stabilizer used in cars and trucks. In this usage molded yarn can be associated, weaving, weave or sew with obtaining tissue. The fabric is glued to the substrate material or combine with him. This combination then, the molding can be attached to a tubular shape, where the inner surface will serve as the thread or fabric of the present invention, as the outer surface will be the substrate material or the substrate material, glued to the rubber. Usually in the case of circular knitting machines substrate material peterout in the tube; when osnovanii substrate material in the knitting injected into the tissue structure; and if the material is woven, can be used knitted fabric with split hair then the s patterns can be interesting as long while a large part of the molded fiber will be on one side, and a large part connecting the fibres on the other. Regardless of the method used for the manufacture of the fabric, the resulting fabric should be tight at high pressure to the molten material, such as rubber for injection molding.

The actual bearings or bushings are made as a result of placing the resulting tissue having a tubular shape, over a mandrel that has a diameter equal to the diameter of the fabric tube. This complex is placed in a mold for vulcanization of rubber products, suitable for the required rubber bushings, and under high pressure injected rubber up until the mold is full. Once the rubber has cooled, the mold is opened and the mandrel removed. To increase the effectiveness of several identical parts can be molded at one time and then split into separate parts. A separate sleeve can be installed either as a result of draping details through the end of the stabilizer bar or they can be split, and then slipped onto the stabilizer.

Direct the cover and close the window. Fabrics made from fibers with 100% PTFE, very soft due to the low modulus fibers and their use can lead to poor compaction or unwanted noise. It is clear that this lack, as a low modulus fibers of PTFE, can be overcome by selection of mixed fibres, which have a very high modulus, such as paraaramid, VBOs or high-molecular polyethylene. The resulting pile fabric characterized by low friction, but superior rigidity for enhanced sealing.

Such fabrics can be attributed to any type of knitted, woven or woven fabric, but preferably to pile fabrics such as knitted bike or woven knitted fabric with split hair. The actual seal is formed when you take the fabric and attach it or put her coat on the fastening holder, which is installed in the door frame, so his window is pressure, which forms a seal that is impervious to weather and wind, and the movement of the window up and down is not difficult.

The yarn according to this invention can also be used in tissue bearings, which are not impregnorium termootdelenija resin is problematic; for PTFE natural tendency is plastic deformation, particularly under conditions of constant loads that exceed 703 kg/cm2(10000 psi). The yarn according to this invention offers a practical solution to this problem by combining fluoropolymeric fibers with other high-strength, high-modulus fibers, which makes it possible to produce fabrics having improved properties in relation to carrying capacity in combination with lubricating ability and improved resistance to plastic deformation. Preferred high modulus fibers useful in this yarn, include para-aramid, VBOs, carbon, glass and UHMWPE fiber.

The yarn according to this invention can also be used to obtain a composite bearings. As previously described, the bearing is made using either a fabric tube or flat fabric, or a separate thread, around which are entwined binding fiber, and then wrapped around a mandrel, which may be round, hexagonal, square or have other various shapes. It moisten with epoxy resin and then armatured. Fiberglass or any other reinforcing fiber is then wrapped around nito it can be cut into individual sleeves. Outer surface, reinforced fiber, also can be processed on the machine to obtain the desired outer diameter. Use the yarn according to the invention as mixed fiber thermoplastic fibers eliminates the need to add binding fibers used in the manufacture of bearings produced in accordance with the present invention. The exception of certain stages of winding individual fluoropolymer threads connecting the fiber or in the case of tissue tubes add mixed staple yarn means that the epoxy resin may be better to moisten and uniformly to impregnate wrapped yarn or fabric tube, resulting in a more uniform composite bearing. Due to manufacturing defects turns out less and making more. Resulting from the use or mixed fibres, containing high-temperature fiber with good abrasion resistance (aramids, VBOs and UHMWPE), or mixed fibers having good heat conductivity (graphite, metal, aramids with a coating of metal, carbon fiber, filled with graphite), it becomes possible to manufacture bearings, characterized by wider ranges is received by applying a layer of tissue on the metal. This type of bearing uses the advantages of the fabric, which has a thermal conductivity. Fibers with good thermal conductivity make it possible for higher speed operation, because the heat is dissipated from the surface of the fabric through the substrate. This improvement increases the ability of the end parts to be subjected to loads and helps to simplify the method of manufacturing by eliminating the need for the heat tissue.

As additional advantages of the present invention it was also found that yarn, containing less than 35 wt.% the polymer has an additional positive properties when used bearings and bushings even though the advantages in terms of friction will be reduced. It was found that the yarn obtained with 10% fluoropolymer fiber can significantly reduce noise during operation of the bearing or bushing.

The following example illustrates the present invention but it is not intended to limit the invention.

Example This example illustrates the operational characteristics of the fabric of the present invention when used for bushings for automotive stabilizer and and stability when driving on the turn. The bushings used in the stabilizer bars in General are made of fiber with 100% PTFE associated with ester fiber so that the fiber from 100% PTFE in the first place was on the surface on one side of the fabric (PTFE surface), whereas on the other side of the fabric surface forms a first polyester fiber. This fabric is formed into the sleeve so that the surface of the PTFE fabric comes into contact with the metal surface stabilizer. Despite the cost, these fabrics having a surface with approximately 100% PTFE content (~50 wt.%) PTFE), are preferred, because they suppress the noise.

Test fabric made in accordance with the present invention, were connected as described below and tested in the apparatus designed to simulate the set stabilizer bushing and the housing system stabilizer.

The device and its components used in the testing are shown in Fig. 1-4.

The device consists of a split metal block, which represents the body and has a size of 10,2x7,6x3,8 cm (HH,5 inches). Block RA is cut. In the upper half of the split block 1 drilled through the two holes with a diameter of 0.95 cm (3/8 inch) 3, through which is inserted the bolts 5, in the lower half 2 thread 0.95 cm (3/8 inch) 4, so that the two halves of the split block may be held together with a predetermined force applied to the bolts. In this device, the stabilizer bar is a metal rod 6, having a length of 10.2 cm (4 inches) and a diameter of 2.5 cm (1 inch). On top of this core weld a hex head with a diameter of 2.5 cm (1 inch). The head makes possible the use of a wrench with limit torque for the application of rotational force to the rod as soon as it is fixed in the housing.

For testing tissue, the device was assembled as follows: the Test strip of cloth was placed on the rubber strip 3,8x8,9 cm (1,5x3,5 inches) and a thickness of 0.3 cm (1/8 inch). Rubber and fabric wrapped around the rod so that in contact with the rod entered the tissue surface of the PTFE, as shown in Fig. 1C, and a rod disposed in the cutouts of the split block. In drilled holes inserted the bolts, and they were screwed into the screw holes, pulling the two halves �8226.gif">ft). This torque guaranteed that the rod and the sample is firmly held in the desired position between the two halves of the split block. Split unit recorded on the working surface of the table. On the hexagonal head of the rod, then put a wrench with limit torque and wrench key with limit torque exerted force for turning the rod. The amount of force required for rotating the rod, measured in kgcm (lbfeet). Was measured and the amount of effort to continue the rotation of the rod after scrolling. As turned the rod, said made any noise.

Test fabric tied with planirovanie. This is the type of fibres used in the manufacture of fabrics for use in the bushing for stabilizer, and this type of knitting allows you to associate two types of threads so that one side of the knitted fabric has a surface of one thread and the other side has a surface of another thread. The test fabric was knitted using one yarn 100% complex polyester, and the second yarn is a mixture of stapling is at 100% PTFE, associated with polyester yarn. As well as in the manufacture of the sleeve, polyester fabric was placed next to a rubber band, and a mixture containing PTFE staple fibers were converted to the metal rod, as shown in Fig. 1C. In the test, when the rod is rotated, it rotates in contact with a side of fabric containing a mixture of PTFE. Rubber strip firmly held in split block.

Test data are given in the table. Tissue was characterized by a weight percent of PTFE in staple yarn, containing a mixture of PTFE/complex polyester, and full weight % PTFE in the tissue. Because the fabric is connected from the two types of yarn, the weight % of PTFE in tissue is approximately equal to half of the percentage values in the full amount of yarn in a knitted fabric. Measured effort was the torque for rotating the rod and start the rotation force to overcome inertia and torque force. Torque was measured using a wrench with limit torque with a round cross member. In all cases, tissues containing PTFE, or as 100% on the front surface of the fabric, or as a component of the front surface of the fabric blended staple yarns by spinning rod or p is age, containing a mixture of 35-90 weight. % fluoropolymer fibers and 65-10 weight. % of one or more kinds of mixed fiber, which does not contain cotton.

2. Yarn under item 1, in which the mixture contains 35-75 weight. % fluoropolymer and 65-25 weight. % mixed fibres.

3. Yarn under item 1, in which the mixture contains 35-65 weight. % fluoropolymer and 65-35 weight. % mixed fibres.

4. Yarn under item 1, in which the fluoropolymer is selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers.

5. Yarn under item 3, in which the fluoropolymer is selected from the group consisting of polytetrafluoroethylene, fluorinated olefin polymers, copolymers of tetrafluoroethylene and hexaferrite, copolymers of tetrafluoroethylene and perfluoroalkyl vinyl ethers and copolymers perftorirovannogo simple ether and fluorinated olefin terpolymers.

6. Yarn under item 1, in which the mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene,limitationsand, poliparafenilenvinilena, ultra-high molecular weight polyethylene, polyesters with an anisotropic melt, carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

7. Yarn under item 3, in which the mixed fiber selected from fibers from the group consisting of polyesters, polyamides, aromatic polyamides, polypropylene, polyethylene and their copolymers, cellulosic man-made fibers and wool, polyparaphenyleneterephtalamide, polymethacrylamide, poliparafenilenvinilena, ultra-high molecular weight polyethylene, polyesters with an anisotropic melt, carbon fibers, metal fibers, glass fibers and para-aramid fibers with a metal coating.

8. The yarn through one of the PP. 1-3, in which the mixed fiber is polyparaphenyleneterephtalamide or polymethylpentene.

9. Miscorrection the product obtained by winding containing the yarn on one of the PP. 1-3.

10. Fabric for use under load, containing the yarn on one of the PP. 1-3.

11. Yarn containing yarn of continuous filament fibers, and a mixture of staple fibers, where the staple fiber into kovago fiber.

12. Yarn under item 11, in which staple fibers are essentially encircle one or more strands of yarn of continuous filament fibers or formed on top of them.

13. Yarn under item 11, in which one or more strands of yarn of continuous filament fibers, essentially encircle staple fiber.

14. The bearing is made of prama on one of the PP. 1-8, 11-13.

15. The sleeve, made of yarn through one of the PP. 1-8, 11-13.

16. Seal, made of yarn through one of the PP. 1-8, 11-13.

 

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