Antistatic fabric

FIELD: textile industry, in particular, manufacture of special medical and rehabilitation articles, for example, physiotherapeutic mats, plaids and clothing parts contacting directly with human body.

SUBSTANCE: antistatic fabric contains systems of warp threads defining background layer and weft threads, said threads being based on chemical and/or natural filaments, and current conductive netted material defined by complex current conductive polymer threads of enclosure-core structure, with fabric warp and weft repeat pattern containing from 10 to 24 threads, including single complex current conductive polymer threads in an amount of from 1 to 12 filaments. Complex current conductive polymer threads of enclosure-core structure are made on the basis of capron filaments covered with continuous current conductive composition based on copolymer of tetrafluoroethylene and vinylidene fluoride, filled with technical carbon at weight ratio of from 1:0.6 to 1:0.8, with total linear density of complex current conductive polymer filament making 52-58 tex.

EFFECT: enhanced antistatic properties of fabric by eliminating the possibility of accumulation of static electricity on surface of article manufactured from said fabric and contacting directly with human body.

2 cl, 5 dwg

 

Fabric refers to the textile industry and is intended for the manufacture of special products for medical and rehabilitation purposes, for example physiotherapy mattresses, blankets and clothing items in direct contact with the human body, and can be used in such industries as construction, electronics and everyday life.

Known fencing fabric made melkozubchatymi weave and contains two systems of main and weft threads, each of which includes strands of fibers, forming the background, and a tinsel strands forming a conductive grid, and rapport tissue on the basis contains 8-10 threads, including 2 glitz, and rapport tissue duck contains from 4 to 8 threads, including single tinsel strands 1 or 2, located every 2 or 3 background weft threads (see patent RU No. 2228398 C1, D 03 D 15/00, 10.05.2004,).

Also known antistatic fabric produced by all-Union scientific research Institute of synthetic fiber FOUNDED (Tver), which is obtained by the method of chemical metallization (of solutions) harsh fabrics of various patterns and density-based synthetic fibers, in particular fabrics of polyester fibers with a thin discrete Nickel-plated, known under the brand name of ART on THE 6-06-32-31-87.

Analogues of this type of tissue are also presented in patent SU 1656020 A1 from 15.06.1991,, EN 2085635 C1 from 27.07.1997,, FR 1557944 A 28.02.1969,, US 4606968A from 19.08.1986,

The main disadvantage of these tissues is that the presence in the structure of metallic tinsel strands (see patent RU No. 2228398) or discrete Nickel coating (see fabric ART on THE 6-06-32-531-87), as shown by scientific research, does not allow direct contact with the human body. In addition, the presence of metal in tissues in the form of tinsel threads, and in the form of a coating significantly increases the weight of the material, increases the cost of the manufacturing process and, consequently, increases the value of the antistatic fabrics and products in General.

The closest analogue, selected as a prototype, is the invention according to patent RU 2228398 C1, 7 D 03 D 15/00, 10.05.2004,

The main task is the development of this design anti-static fabric, which would exclude the above mentioned shortcomings.

The technical result that can be obtained from the use of the invention is to provide an antistatic cloth protection from electromagnetic radiation (EMR) over a wide frequency range and avoid accumulation of charges of static electricity on the surface of products in direct contact with the human body.

The main for the ache solved and a technical result is achieved due to the fact, what antistatic fabric contains system forming the background of the main and weft threads made on the basis of chemical fibers and/or natural fibers, and conductive grid formed integrated conductive polymer thread structure of the sheath-core, distributed as in the main array, and the array of weft threads, the pattern of the fabric in the warp and weft is from 10 to 24 fibers, including a single integrated conductive polymer filaments from 1 to 12.

The fabric, in which the integrated conductive carbon polymer filament structure sheath-core made on the basis of nylon yarns, coated with a continuous conductive carbon composition based on a copolymer of tetrafluoroethylene with vinylidenefluoride, filled with technical carbon mass ratio of from 1:0.6 to 1:0.8 a at a total linear density of integrated conductive carbon polymer filament 52-58 Tex.

Distinctive features anti-static fabrics are as follows:

system main and weft threads forming the background, made on the basis of chemical and/or natural fibers;

- electrically conductive mesh formed of integrated electrically conductive carbon polymer filaments which are distributed in the main array, and the array of weft threads;

- is apport tissue on the basis ranges from 10 to 24 threads including single integrated electrically conductive carbon polymer filaments from 1 to 12;

- rapport tissue duck is from 10 to 24 fibers, including a single integrated electrically conductive carbon polymer filaments from 1 to 12;

- integrated conductive polymer filament is made on the basis of the nylon yarns, coated with a continuous conductive carbon composition based on a copolymer of tetrafluoroethylene with vinylidenefluoride, filled with technical carbon mass ratio of from 1:0.6 to 1:0.8 a at a total linear density of integrated conductive polymer strands 52-58 Tex;

- accommodation complex conductive polymer filaments in the form of conductive carbon grid array basic and weft threads provides reliable protection from static electricity and electromagnetic radiation.

These distinctive essential features are new, because their use in the prior art, analogs and prototype not found, which allows to characterize the proposed technical solution corresponding to the criterion of "novelty".

One set of new essential features with commonly known essential features that allow one to solve the problem and achieve new technical results (treatment effect is KTA), which allows to characterize a new technical solution significant differences compared with the prior art, analogs and prototype.

A new technical solution is the result of experimental design and technological development and creative contribution, obtained without the use of standard design solutions or any of the recommendations in its originality and content performance meets the criterion of "inventive step".

Figure 1 presents a sketch of the anti-static cloth.

Figure 2 presents the structure of a complex conductive carbon polymer threads.

A more detailed description of the invention consists in the following.

Anti-static fabric, presented in figure 1, contains an array of core threads 1 of the chemical and/or natural fibers, an array of weft threads 2 of the chemical and/or natural fibers and integrated electrically conductive carbon polymer threads 3, which are located in the main array, and the array of weft threads and form a conductive mesh, and the rapport tissue on the basis ranges from 10 to 24 fibers, including a single integrated electrically conductive carbon polymer filaments from 1 to 12, and rapport tissue duck is from 10 to 24 threads, including single complex power is oodama carbon polymer filaments from 1 to 12.

Integrated conductive polymer thread, are presented in figure 2, has the structure of a "sheath-core" and contains the "core" 4 nylon filament, as in "shell" 5 a copolymer of tetrafluoroethylene with vinylidenefluoride, filled with technical carbon mass ratio of from 1:0.6 to 1:0.8 to. This yarn is produced by THE 2282-057-00203996-98.

On the basis of specified complex conductive polymer strands and twisted cotton yarn on the basis of cotton and nylon was made an experimental batch of anti-static fabric in accordance with the sketch presented in figure 1. This fabric produced according to TU 8378-034-00321069-2005.

On the basis of specified complex carbon conductive polymer yarn and cotton yarn in the ratio of 7:93 was made an experimental batch antistatic carbon fabric household on THE 8378-001-74067818-2005.

On the basis of specified complex carbon conductive polymer fiber and polyamide in the ratio of 7:93 was made an experimental batch antistatic carbon technical fabric on THE 8378-002-74067818-2005.

The results of the tests carried out in accordance with GOST 16185-70 "Plastic. The method of determining the electrostatic properties showed that the optimal are the tissue samples that contain rapport as the basis, and duck from 1 to 10 set the UNC conductive carbon polymer filaments. In this case, the surface resistivity is 103-104Ω and the induced electrostatic charge flows almost instantaneously, i.e. the initial charge density (δ0and half of leakage charge (r) is minimal, thus the high voltage of negative and positive polarity influenced the sample for 15 seconds.

Developed fabrics and clothes made from them, showed positive characteristics from the point of view of therapeutic effect, protection from electromagnetic radiation (EMR) over a wide frequency range, and from the point of view exceptions accumulation on the surface charges of static electricity.

Thus, the proposed technical solution in the specified essential features meets the criterion of "industrial applicability"

1. Antistatic fabric containing system forming the background of the main and weft threads made on the basis of chemical and/or natural fibers, and conductive grid formed integrated conductive polymer thread structure of the sheath-core, distributed as in the main array, and the array of weft threads, the pattern of the fabric in the warp and weft is from 10 to 24 fibers, including a single integrated conductive polymer nor is it from 1 to 12.

2. The fabric according to claim 1, in which the integrated conductive polymer filament structure sheath-core made on the basis of nylon yarns, coated with a continuous conductive composition based on a copolymer of tetrafluoroethylene with vinylidenefluoride, filled with technical carbon mass ratio of from 1:0.6 to 1:0.8 a at a total linear density of integrated conductive polymer strands 52-58 Tex.



 

Same patents:

FIELD: industrial fabric used in pulp-and-paper industry and associated branches of industry.

SUBSTANCE: industrial fabric comprises threads extending in the course of advancement of paper in machine, and threads extending traverse to course of advancement of paper in machine, said threads being interwoven so as to form woven structure. At least some of threads extending in the course of advancement of paper in machine and/or threads extending traverse to course of advancement of paper are threads having core filament surrounded with enclosure. Core filament and enclosure may be visually distinguished from one another by unaided eye, for example by color, so that wear of industrial fabric surface may be visually controlled during its service life on the basis of changing which is distinguished upon wearing and losses of enclosure from core filament.

EFFECT: provision for controlling wear of fabric in any point on its inner and outer surfaces.

5 dwg

FIELD: woven materials for magnetic systems and electromagnetic radiation shields.

SUBSTANCE: proposed magnetically soft fabric used as magnetically soft material has mixture of powdered alloy of falsifier with grain size of 5 to 10 μm and magnetically soft Mn-Zn-ferrite with grain size of 50 to 100 μm , and binding polymer. Fabric warp is made of lavsan using textile technology; proportion of ingredients is as follows, mass percent: lavsan threads, 30-20; binding polymer, 15-20; magnetically soft ferrite powder, 30-50.

EFFECT: ability of shielding external superhigh-frequency electromagnetic radiation in ferromagnetic resonance mode.

1 cl, 1 tbl, 3 ex

FIELD: woven fabrics for magnetic systems, radioactive radiation shields, biologic process stimulation in living organisms.

SUBSTANCE: proposed highly coercive fabric is, essentially, reticular structure of linen weave of polyamide warp threads and shoot wires, and combination of acrylic copolymers and highly coercive neodymium-iron-boron alloy powder; linear density of warp threads and shoot wires is 20 to 100 tex, and their quantity per meter is 1 500 to 6 500, proportion of ingredients being as follows, mass percent: polyamide threads, 10-50; acrylic copolymers, 15-25, highly coercive neodymium-iron-boron alloy powder, 65-35.

EFFECT: enhanced flexibility and ergonomic efficiency, facilitated manufacture.

1 cl, 1 tbl, 3 ex

FIELD: woven fabrics for magnetic systems and radioactive radiation shields.

SUBSTANCE: proposed ferromagnetic fabric characterized in enhanced strength and magnetic characteristics, ability of absorbing and dissipating electromagnetic radiation has warp, polymeric binder, and powdered ferromagnetic material. Fabric warp is made by linen weave method. Warp threads and shoot wires are made of alternating lavsan and magnetically soft single threads. Number of threads per meter is 5 000 to 7 000. Magnetically soft threads are made either of supermalloy or molybdenum permalloy with diameter measuring 0.05 to 0.1 mm; linear density of lavsan threads is 10 to 20 tex. Proportion of fabric ingredients is as follows, mass percent: lavsan thread, 10-15; magnetically soft single threads, 20-25; binder (acrylic copolymers), 10-15; highly coercive alloy powder, 50-55.

EFFECT: enhanced radioactive radiation shielding efficiency of fabric.

1 cl, 1 tbl, 1 ex

FIELD: textile industry.

SUBSTANCE: fabric comprises superthin thread having weight number of single filament of 0.001-0.3 denier and thick thread having weight number of single filament of 0.5-5 denier. Superthin thread contains mass colored component selected from the group comprising carbon black, pigments and colorants. Fabric has washing stability level exceeding 3 and light resistance level exceeding 5. Since superthin thread comprises as main component mass colored component such as carbon black or like component, additional coloring process is not needed, and washing stability and light resistance are high.

EFFECT: simplified manufacture procedure owing to reduced number of additional operations.

4 cl, 1 tbl, 5 ex

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

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

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: 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: 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, 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

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

FIELD: textile industry.

SUBSTANCE: fabric comprises superthin thread having weight number of single filament of 0.001-0.3 denier and thick thread having weight number of single filament of 0.5-5 denier. Superthin thread contains mass colored component selected from the group comprising carbon black, pigments and colorants. Fabric has washing stability level exceeding 3 and light resistance level exceeding 5. Since superthin thread comprises as main component mass colored component such as carbon black or like component, additional coloring process is not needed, and washing stability and light resistance are high.

EFFECT: simplified manufacture procedure owing to reduced number of additional operations.

4 cl, 1 tbl, 5 ex

Up!