Braided safety cord of threshold operation

FIELD: textile, paper.

SUBSTANCE: braided safety cord of threshold operation is arranged by plain weaving of background warp and weft threads, and additionally comprises at least two ruptured power-consuming groups of warp threads evenly distributed along its width. Additional power-consuming groups of warp threads consist of even number of textile threads identical in raw material composition and linear density of textile threads, which are arranged in pairs, and are woven with each other oppositely, forming woven elements of repp weaving with repeat length from 2 to 8 wefts. Threshold of cord operation is determined by the following formula: Pac=P1[1+0.9(n-1)], where Pac - threshold of actuation in kgf, P1 - total rupture load of one group of threads of additional warp in kgf, n - total number of groups of power consuming systems of various weaving warp threads. Total rupture load of background warp threads at least 20 times exceeds value of cord threshold operation. Full repeat of cord along warp equals doubled product of repeats in all systems of various weaving warp threads it contains. Weft weaving repeat equals least total multiple of weft repeats of all power-consuming systems of warp threads contained in cord.

EFFECT: invention provides for an insignificant displacement of secured body in case of threshold operation.

1 cl, 2 dwg

 

The invention relates to the textile industry and can be used in cushioning and safety energy-absorbing device for absorbing the kinetic energy of the moving mass and shock loads, mainly in sets of mounting, fire, rescue and mountaineering equipment used for safety of people working at height.

The main attribute of a design woven tapes threshold trigger is the presence in their composition of bearing background of main and weft threads and additional systems to the main thread, servants energy-absorbing elements being torn apart under the action of a predetermined threshold load. The ends of the tapes threshold actuation of a given length is fixed on two different planes cushioning device. In case of emergency unauthorized movement insurable body mounted on one end of the tape located in the additional system main thread interrupted, thus there is a transformation of the kinetic energy of moving bodies in the work gap energy absorbing filaments. After the break energy absorbing systems main thread moved to the end of the tape must be securely and maintained in that position at the expense of not less than 20-fold safety factor on the magnitude of the load and the threshold is triggered.

Known energy-absorbing woven tape, providing programmable elongation and rupture at a given load. The tape contains two background layer, made plain weaves indigenous main and weft threads and additional connecting the main thread, earned sequentially in each of the layers with the formation between cells. In the ribbon, there are several additional systems connecting the main thread, which can change from layer to layer as evenly and unevenly. If the connecting threads pass from layer to layer is uneven, the tearing of the tape will first break only one system threads, then two, then three systems connecting threads.

This is done in order to smoothly enter into the work tape and to reduce the magnitude of the initial dynamic impact. The tape is produced on a loom equipped with jacquard machine, and connecting threads served with Creel [U.S. Patent No. 3978894, CL. 139-383, 1976].

The disadvantage of this tape is due to its design a large amount of movement of the insured's body when the threshold is triggered, up to 100% of the original length. In addition, the background part of the tape does not have a safety property to fix and keep insured the body after the threshold is triggered. From the local also woven ribbon threshold triggering shock absorbing devices, containing two parallel spaced one above the other background layer with fixed edges, made of plain weave background of main and weft threads. Background layers are connected energy absorbing suspend the main thread, earned sequentially in each of the layers with the formation between cells. [USSR author's certificate No. 1172954, publ. 15.08.1985, BI No. 30].

The disadvantage of this woven ribbon threshold operation is also due to its design a large amount of movement of the insured's body when the threshold is triggered, up to 100% of the original length. Furthermore, the background portion of the tape does not have a safety property to fix and keep insured the body after the threshold operation.

Closest to the invention to the technical essence and the achieved result is a single layer of woven finishing tape, made of plain weave background of main and weft threads, and optionally containing uniformly distributed across the width of at least two groups of pattern forming the main thread, each of which has one single and short one long overlap length from 2 to 8 utechin [Reference ribbon-weaving production. - M: Light industry, 1978, p.223, 260, 280].

The presence of the ribbon background and a few more who ethnopragmatics groups of threads with different length of the main beams, consistently torn when the application of a shock load, gives it energy-absorbing properties. However, the background part of the tape does not have a safety property to fix and keep insured the body after the threshold operation with a 20-fold safety margin from the threshold.

The technical task of the present invention is to provide a safety belt straps, providing a small amount of movement of the insured's body when the threshold is triggered, not exceeding 40% of its original length. The background part of the tape must have a safety property to fix and keep insured the body after the threshold operation is not less than 20-fold safety margin from the threshold.

This objective is achieved in that the proposed safety woven ribbon threshold operation is made plain weaves basic background and weft threads, and further comprises evenly distributed across the width of at least two groups of energy-absorbing main thread. Additional energy-absorbing core filaments are composed of an equal number of identical raw material composition and with a linear density of textile fibers, which are arranged in pairs and are intertwined with each other in opposition, forming a woven items Rasulova weave Salinas overlap pauropoda from 2 to 8 utechin.

The threshold at which the tape is determined by the formula

,

where Rcf- threshold, kgf,

P1- the breaking load of one group of filaments extra bases, kgf,

n is the total number of groups energy absorbing systems of warp threads.

To ensure the effect of insurance total breaking load of threads background should not less than 20 times the value of the threshold is triggered.

Full rapport tape on the basis of equal to twice the product of the repeats of all systems contained therein ethnopragmatics warp. Rapport weave on a duck is equal to the least common multiple of repeats on a duck all contained in the feed energy absorbing systems the main thread.

Figure 1 shows the pattern of the repeat of the weave and combined with the arrangement of warp and weft threads in longitudinal section of the proposed tape.

Figure 1 adopted the following conventions: Of- thread background, O1About2O3- break EnergoPolyus filament bases of different lengths rasowych floors;1...Y24- - the sequence numbers of weft threads in the repeat of the weave from 1 to 24.

Figure 2 shows the graph of "load - extension" offer tape during the threshold triggering and rupture energy absorbing uchastka the torn main thread which shows that after the threshold triggering and rupture energy absorbing systems main thread tape absorbs shock, after which perceives a lot of the insured's body and hold it with at least 20-fold margin of safety threshold.

The proposed safety tape threshold operation is made to the Shuttle or rapier ribbon-weaving machines of all types of textile fibres mainly of man-made fibres.

To confirm the technical result of the invention were experimental samples safety belts threshold actuation of the proposed design. Specifications made of the tapes shown in the table.

These tables show that the proposed safety tape threshold trigger is fully fit for purpose: provides a small amount of movement of the insured's body when the threshold is triggered, not to exceed 35% of the original length. The background part of the tape has a safety property to fix and keep insured the body after the threshold operation is not less than 20-fold margin of safety threshold.

The tape is recommended for use in mounting kits, fire, rescue and climbing curb the I, used for safety of people working at height.

Technical characteristics of the proposed woven tapes threshold trigger
Name parametersBrand safety belt threshold trigger
STEPS - 50/800STEPS - 60/1200STEPS - 70/1600STEPS - 80/2000
The nominal threshold of the tape, kgf40±260±380±4100±5
The maximum elongation of the tape when the threshold is triggered, % of original length28323435
Nominal belt width, mm30±245±258±270±2
Nominal linear density of the tape, d/m28±2 40±250±260±2
Tape thickness, mm2,22,22,22,2
The number of threads in the ribbonfundamentals widthbackground26385062
1st break8121620
2nd break8121620
3rd break8121620
duck 10 cm44±244+244±244±2
The breaking load on the basis of the background (the insurer). part of the tape, kg, not less than 800120016002000
Raw material and thread structurebasics backgroundYarn of polyester (Mylar) 675 Tex
torn basesYarn of polyester (Mylar) 111 Tex
duckYarn of polyester (Mylar) 454 Tex
Notes:
1. Abbreviations structures tape:
STEPS - insurance woven ribbon threshold trigger;
the numerator of the fraction in the symbol mark of the tape - rated threshold tape, kgf;
the denominator of the fraction in the symbol mark of the tape is rated breaking load of the background (the insurer). part of the tape, kgs.
2. Tape series STEPS can be operated at an ambient temperature of ±50°C and high relative humidity up to 98%.

Safety woven l the NTA threshold trigger made of plain weave background of main and weft threads, and optionally containing at least two uniformly distributed over its width torn energy-absorbing groups of the main threads, characterized in that the additional energy-absorbing core filaments are composed of an equal number of identical raw material composition and with a linear density of textile fibers, which are arranged in pairs and are intertwined with each other in opposition, forming a woven items Rasulova weave length of pauropoda from 2 to 8 utechin, with the threshold at which the tape is determined by the formula:
Pcp=P1[1+0,9(n-1)],
where Pcp- threshold, kg;
P1- the total breaking load of one group of filaments extra bases, kgf;
n is the total number of groups energy absorbing systems ethnopragmatics warp;
the total breaking load of the background of the main thread at least 20 times greater than the magnitude threshold tape full rapport tape on the basis of equal to twice the product of the repeats of all systems contained therein ethnopragmatics warp, rapport weave on a duck is equal to the least common multiple of repeats on a duck all contained in the feed energy absorbing systems the main thread.



 

Same patents:

FIELD: physics.

SUBSTANCE: invention can be used in making electromagnetic a camouflage garment, particularly in the infrared spectrum, as well as in garments for industrial purposes, specifically mobile shelter (tents) which provide comfortable microclimatic conditions. Material which reflects infrared radiation contains a textile base, a metallised and microporous membrane layer. The textile base used is polyester textile material with a water-repellent impregnation. The metallised layer is titanium nitrate and the microporous membrane layer is made from thermoplastic polyurethane resin and is placed between the textile base and the metallised layer. Titanium nitride is deposited on the microporous membrane layer on an atomic-molecular level in an amount of 1-2 g/m2, and the textile base may have a camouflage pattern.

EFFECT: high level of protection of a biological object owing to higher infrared radiation reflection power of the material.

2 cl, 3 dwg

FIELD: textile, paper.

SUBSTANCE: basic fabric design contains the following: at least 28 shoots (1…28) arranged in staggered order and forming 8 columns (C1…C8), containing alternately 4 and 3 shoots, at the same time shoots are arranged at 7 levels (N1…N7); at least 12 warp threads (A…L) arranged in at least 4 displaced parallel plans, at the same time each of these planes contains at least 3 parallel shoots, which follow a separate way from one plane to the other.

EFFECT: good resistance to exfoliation, impact strength and resistance to compression with good ability to deformation, and increased mechanical characteristics.

4 cl, 1 dwg

FIELD: textile industry.

SUBSTANCE: multiaxial fabric comprises multiaxial fabric base in the form of continuous loop wound along spiral, which is folded along the first crease edge and the second crease edge to form the first layer and the second layer. Specified main fabric comprises the first strip woven by specified method from threads of machine direction (MD threads) and threads of direction reverse to machine one (RMD threads), so that gap between one pair of adjacent MD threads differs from gap between other pair of adjacent MD threads or so that gap between one pair of adjacent RMD threads differs from gap between other pair of adjacent RMD threads.

EFFECT: invention provides for development of fabric having reduced interferential pattern and improved uniformity of dehydration.

22 cl, 23 dwg

FIELD: textile industry.

SUBSTANCE: ribbon is woven with at least one first (right) woof thread and at least one second (left) woof thread. Both woof threads at both sides of ribbon are entered into one and the same shed, are wrapped around woof holder to form reverse loops of woof thread, are held by woof holders substantially until replacement of shed, and then after replacement of shed are removed from holders of woof by reed and are attached to ribbon trimming.

EFFECT: development of belt ribbon with maximum transverse rigidity and soft edge parts.

24 cl, 19 dwg

Multilayer insole // 2401023

FIELD: personal use articles.

SUBSTANCE: multilayer insole consists of upper woven layer facing foot, lower woven layer adjacent to inner side of shoes and middle layer between them, which is manufactured with number of middle layers, made by plain weave from flax threads each, consisting of horizontal and vertical layers, not more than 4. Besides vertical middle layer is connected to lower horizontal layer by weaving of common woof threads of lower horizontal layer and vertical middle layer with warp threads of lower horizontal layer and vertical middle layer, and with n-th horizontal middle layer as a result of weaving of common woof threads of n-th horizontal middle layer and vertical middle layer with warp threads of n-th horizontal middle layer and vertical middle layer. With upper horizontal layer - as a result of weaving of common woof threads of upper horizontal layer and vertical middle layer with warp threads of upper horizontal layer and vertical middle layer, so that upper layer facing foot in heel part has horizontal surface formed by 48 woof threads, 100 warp threads of upper layer and 100 warp threads of middle vertical layer. Curvilinear contour of part is formed by three rectangular ledges at inner side and three rectangular ledges at field side with t number of woof threads along height of vertical middle layer, where t is selected from 2 to 14; and from warp threads for each ledge in areas of bevels for inner and field sides of heel parts, where c=6, via b woof vertical layers. Where b=4 and a warp threads between inner and field sides of heel part, where a=76; and d woof vertical layers of field side of heel, waist and toe parts, where d=176. In toe part it has horizontal surface formed by 104 woof threads, 140 warp threads of upper layer and 140 warp threads of middle vertical layer. Curvilinear contour of part is formed by five rectangular ledges at inner side with s number of woof threads along height of vertical middle layer, where s is selected from 2 to 9; and with c, f, c, f warp threads for each ledge in area of bevel for field side of toe part, where c=6, f=12, via e, g, e, b of woof vertical layers, where e=8, g=12, b=4, and three rectangular ledges from warp threads for each ledge in area of bevel for inner side of toe part, where c=6, via b woof vertical layers, where b=4; and h warp threads between field and inner sides of toe part, where h-90, and i woof vertical layers of inner side of toe part and waist parts, where i=84 with s, r number of woof threads along height of vertical middle layer, where s is selected from 2 to 9, and r is selected from 2 to 10. In waist part there is a horizontal; surface made by 96 woof threads, 140 warp threads of upper layer and 140 warp threads of middle vertical layer, curvilinear contour of which is formed by three rectangular grooves at inner side with o, p, q, r number of woof threads along height of vertical middle layer, where o is selected from 2 to 13; p is selected from 2 to 12; q is selected from 2 to 11; r is selected from 2 to 10; and with f warp threads for each groove in area of bevel for inner side of waist part, where f=12 via j, k woof vertical layers, where j=16, k=24; and 1 woof vertical layers of inner side in waist and toe parts, where l=68, besides number of woof threads along height of vertical layer is not more than 14.

EFFECT: improved manufacturability of process as a result of simultaneous running of layers and their connection by method of single-shed figured dobby weaving in textile machinery with simultaneous increase of insole service life and adjustable elasticity of insole, which takes into account features of human foot structure in process of wearing.

3 cl, 5 dwg

FIELD: textile, paper.

SUBSTANCE: fireproof membrane-fabric material made on warp and weft from two-component combined thread, consisting of aramid thread twisted with the second component. At the same time aramid threads are based on polyparaphenyleneterephthalamid, polymetaphenyleneterephthalamid, copolyparaphenyleneterephthalamid or copolyparaphenylenebenzimidazolterephthalamid fibres. Material is arranged as double-layer, containing external fireproof layer and inner membrane layer, at the same time ratio of thickness of inner membrane layer to thickness of external fireproof layer is selected as 0.2-3.0. External fireproof layer is arranged with linear density of 38 tex, breaking load of 10-30 N and permanent strain after rupture of 3.9-4.5% from double-component combined thread, the first component of which in the form of rod represents aramid complex thread or yarn with linear density of 6.3-14.3 tex, and the second component of combined thread in the form of rod braiding with number of turns of 600-900 units/m represents cellulose-containing threads or yarn with linear density of 10-30 tex. At the same time in aramid threads or yarn polyparaphenyleneterephthalamid, polymetaphenyleneterephthalamid, copolyparaphenyleneterephthalamid or copolyparaphenylenebenzimidazolterephthalamid fibres are used with oxygen index of more than 30, and cellulose-containing thread or yarn is represented by modified fireproof viscose thread or yarn. Besides fabric of external layer is arranged by main weaving with surface density of 150-200 g/m2 at the following ratio of components, wt %: aramid thread 15-50, cellulose containing thread or yarn 85-50, inner membrane layer of material is arranged with pore size of 0.15-0.65 micrometre from mixture of polyvinylidene fluoride with 24-30 wt % of tetrafluorethylene copolymer. At the same time material of membrane layer has steam permeability at 36°C of 78.5-86 g/m2 hour, water-resisting property 1.7-1.8 kgf/cm2, bubble point of 0.4-0.6 kgf/cm2 and surface density of 20-118 g/m2.

EFFECT: invention provides for high water impermeability, high resistance to wind penetration, high aerosol impermeability, sufficient steam and air permeability in removal of excessive moisture from surface of human body skin, high draping ability, and complex combination of incombustibility and fire resistance with sufficient rupture and tear strength.

4 cl, 4 ex

FIELD: textile, paper.

SUBSTANCE: invention relates to fabric intended for use in moulding part of paper-making machine. Fabric contains the first and second layers of MD-threads passing in machine direction and woven alternately with the first and second systems of CD-threads, passing in direction transverse to machine direction. The first system consists of the first and second CD-threads, while the second system consists of the third, fourth and fifth CD-threads. The first and second CD-threads form a connection pair of threads, which, when combined, weave with each MD-thread of the first layer and cross between the first and second layers. The fourth CD-thread is woven with each MD-thread of the first layer. The fifth CD-thread is woven at least with one MD-thread of the second layer. The third CD-thread is located between the fourth and fifth CD-thread. The third, fourth and fifth CD-threads are arranged one above another.

EFFECT: fabric is highly stable, has uniform surface and provides for good support of fibrous sheet.

15 cl, 10 dwg, 1 tbl

FIELD: textile industry.

SUBSTANCE: tape includes two parallel background layers arranged one over the other one with fixed edges, made by linen weave of root warp and filling threads and connecting energy-absorbing ruptured warp threads included serially into each of layers with formation of cells between them. Cells are shaped as equilateral trapezoids, lateral sides of each one are formed by connecting warp threads, and bases are formed by sections of according background layer arranged between them, so that lower and upper bases of trapezoids adjoin each of layers in alternating order.

EFFECT: formation of shock-absorbing woven tape of threshold actuation of increased reliability, having lower non-uniformity of energy-absorbing threads rupture in it.

4 dwg, 1 tbl

FIELD: textile industry.

SUBSTANCE: tape includes two parallel background layers arranged one over the other with fixed edges made by linen weave of warp and filling threads. Background layers are connected to each other by means of filling threads, which, being woven with warp threads of each background layer in alternating order, form adjacent discrete woven sections in them so that rectilinear sections of filling threads, which are arranged as inclined in the areas of their transition from one background layer to the other one and back, serve as ruptured energy-absorbing elements.

EFFECT: formation of shock-absorbing woven tape of threshold actuation, having higher uniformity of energy-absorbing threads rupture in it.

5 dwg, 1 tbl

FIELD: textile industry.

SUBSTANCE: tape includes film base and woven cloth that is arranged as a layer on one side of this film base and sticky layer arranged as a layer on the other side of this film base, besides total fill coefficient (CFtotal) calculated from fill ratios of both weft and warp that compose woven cloth makes from 500 to 1400, and one of warp fill ratios and weft fill ratios is in the range from 200 to 800. Also textile product is described, in which part of sewn part is treated with application of specified sealing tape. At the same time textile product is produced by means of sewing or fusing of laminated product from cloth.

EFFECT: improved water impermeability of sealed part, appearance, reduction of weight.

23 cl, 9 dwg, 4 tbl, 25 ex

FIELD: textile industry, in particular, providing textile surface with at least one side having increased degree of visual contrast.

SUBSTANCE: textile surface is produced on the basis of threads or filaments of at least three types, namely, extinguishing threads or filaments, thermally stable threads or filaments and threads or filaments with increased degree of visual contrast.

EFFECT: enhanced protection from elevated temperatures and free flame.

10 cl, 1 dwg

FIELD: textile industry, in particular, providing textile surface with at least one side having increased degree of visual contrast.

SUBSTANCE: textile surface is produced on the basis of threads or filaments of at least three types, namely, extinguishing threads or filaments, thermally stable threads or filaments and threads or filaments with increased degree of visual contrast.

EFFECT: enhanced protection from elevated temperatures and free flame.

10 cl, 1 dwg

FIELD: pulp-and-paper industry.

SUBSTANCE: web has system of filaments extending along machine, system of first filaments extending transverse to machine, system of second filaments extending transverse to machine and interwoven with filaments extending along machine in first zone along one of two transverse edges of web for papermaking machine between system of first filaments and stitch loops of second weaving pattern, system of third filaments extending transverse to machine and interwoven with filaments of system extending transverse to machine in second zone along other of two transverse edges of web for papermaking machine between system of first filaments and stitch loops of third weaving pattern. System of third filaments has at least two filaments extending transverse to machine. Second zone is characterized in that denier of at least some of third filaments differs from that of first filaments, gaps between at least some of third filaments differ from those between first filaments, and third weaving pattern differs from that of first pattern.

EFFECT: increased efficiency and improved quality of seam of web for papermaking machine.

62 cl, 5 dwg

FIELD: pulp-and-paper industry.

SUBSTANCE: web has system of filaments extending along machine, system of first filaments extending transverse to machine, system of second filaments extending transverse to machine and interwoven with filaments extending along machine in first zone along one of two transverse edges of web for papermaking machine between system of first filaments and stitch loops of second weaving pattern, system of third filaments extending transverse to machine and interwoven with filaments of system extending transverse to machine in second zone along other of two transverse edges of web for papermaking machine between system of first filaments and stitch loops of third weaving pattern. System of third filaments has at least two filaments extending transverse to machine. Second zone is characterized in that denier of at least some of third filaments differs from that of first filaments, gaps between at least some of third filaments differ from those between first filaments, and third weaving pattern differs from that of first pattern.

EFFECT: increased efficiency and improved quality of seam of web for papermaking machine.

62 cl, 5 dwg

Technical fabric // 2258105

FIELD: textile industry.

SUBSTANCE: invention relates to manufacture of fire-protection fabrics with heat-protection properties destined for militaries, firemen, foundry workers, welders, metallurgists, and so on. Fabric contains, in warp and weft, staple yarn including staple fibers based on triple aromatic copolyamide or mixture of triple aromatic copolyamide based fibers with natural fibers, or mixture of triple aromatic copolyamide based fibers with artificial fibers, or mixture of triple aromatic copolyamide based fibers with synthetic fibers, wherein triple aromatic copolyamide is expressed by following general formula: [-NH-R1-NHCO-R2-CO-]n[-NH-R3-NHCO-R2-CO]m[-NH-R2-NHCO-R2-CO]p, where n=0.05-0.4, m=0.6-0.95, p=0.05-0.4; R1-3 denote bivalent aromatic radicals in p-position, of which R1 is heterocyclic radical of formula , R2 p-phenylene, and R3 radical of formula . More specifically, natural fibers utilized are cotton, flaxen , and wool fibers; synthetic fibers are polyester(ether) and polyacrylonitrile fibers; and artificial fibers are fire-resistant viscose fibers.

EFFECT: increased resource of raw materials and assortment possibilities, and improved working characteristics of fabric.

FIELD: fabric used as reinforcing carcass of technical articles with polymeric covering, preferably used as protective layer-breaker for rubberized cord of conveyor belts, rubberized sleeves and other technical articles.

SUBSTANCE: biaxiisotropic duck fabric is manufactured by double-layer weaving of warp and weft threads having similar composition of raw material and linear density of threads and similar pattern repeat of weavings in warp and weft. Fabric layers are connected with each other simultaneously by all warp and weft threads passing from layer to layer. In weaving pattern repeat, each warp and weft thread forms two long three-thread overlaps and two eight-thread single-thread overlaps. Any half the pattern of eight-thread weaving pattern repeat of 4x8 size or 8x4 size along warp and weft threads, after being turned to the right or to the left through right angle, coincides with respective half the pattern repeat of opposite thread system, and upon turning through 180° it coincides with pattern of second half of similar pattern of thread system, with fabric tenacity coefficient being within 3.0-10. Fabric produced has warp and weft rupture loading of at least 140 kgf/cm and tenacity coefficient of at least 3.0.

EFFECT: improved quality and wider range of duck fabrics.

1 dwg, 1 tbl

FIELD: textile industry, in particular, duck fabric used as endless belt for forming and transportation of nonwoven fibrous cloth for manufacture of nonwoven fabric.

SUBSTANCE: duck fabric has cloth carrier surface comprising threads having rough surface, said threads hindering displacement, more precisely, sliding of nonwoven fibrous cloth relative to cloth carrier surface. These threads with rough surface preferably define elongated overlaps on cloth carrier surface in one or two directions, i.e., in cloth movement direction in machine and/or in direction perpendicular to fabric movement direction in machine.

EFFECT: increased efficiency by preventing displacement or sliding of nonwoven cloth relative to belt surface.

26 cl, 6 dwg

FIELD: production of fabrics for manufacture of protective clothing, preferably protective vests and plates, as well as for sewing of special sportive protective fencer's clothing, such as vests, side and chest protective means used during exercising.

SUBSTANCE: biaxiisotropic fabric is manufactured in bark weaving pattern from warp and weft threads of similar composition and linear density and with similar warp and weft repeat pattern. In weaving repeat pattern, any one of two halves of six-thread weaving repeat pattern sized 3x6 or 6x3 along warp or weft threads, turned through 180 deg, is identical to other unturned half. Fabric has one and a half layers which are connected with one another through all warp and weft threads. Said threads are transferred from one layer to another, and each of warp and weft threads forms two elongated double-thread overlaps and two short single-thread overlaps in weaving repeat pattern. Diagonal sections of weaving repeat pattern define four triangular fragments, each of which, when turned through 180 deg, coincide with pattern of respective symmetrical non-turned fragment. Biaxiisotropic fabric of such structure has resistance coefficient of at least 0.9 and relatively low flexural rigidity (not in the excess of 5/0 gf/cm).

EFFECT: increased efficiency, improved protective properties and wider range of usage.

2 dwg, 1 tbl

FIELD: production of duck fabrics.

SUBSTANCE: duck fabric is produced from longitudinal and transverse threads, where longitudinal threads are multifilament threads including multiplicity of single thread filaments and at least one thermally fusible filament of thermoplastic material. This at least one thermally fusible filament of thermoplastic material has lower melting point than single filaments of multifilament thread. After thermal processing, multifilament threads become harder and single filaments defining said multifilament threads are secured in conjunction with thermoplastic material of said at least one thermally fusible thread.

EFFECT: improved quality of duck fabric due to keeping of orientation and continuity of connecting loops necessary for bonding of fabric.

25 cl, 5 dwg

Thermal fabric // 2278190

FIELD: production of fabrics which generate heat by means of power source and may be used for manufacture of clothing, seats, quilts, etc.

SUBSTANCE: thermal fabric comprises non-conductive thread, heating thread with positive temperature coefficient, and two current-conductive terminals. Heating thread comprises core, enclosure made from matrix including embedded current-conductive particles, and isolating sheath.

EFFECT: provision for creating fabric free of wires and possessing the function of self-regulating heating.

29 cl, 5 dwg

Up!