Filtering non-woven material
(57) Abstract:The inventive non-woven filtering material consisting of interconnected hypoproteinemia layers of polyester fiber and located between the woven frame comprising polyester fibers and additionally cotton yarn with a diameter less than the diameter of the warp threads, forming areas, a width equal to or not less than the width of the seam filter and located with multiplicity equal to the width of the filter, starting from the edges of the filter material, one of the outer layers consists of two layers: the webs adjacent to the frame, and apopreciate layer, bonded together by hypoproteinemia. The ratio of surface densities of all layers of non-woven filtering material is 1 : 1, 25 : 2,0, degree of hypoproteinemia 1 : 1 : 2. One of the outer layers or both layers are covered with breathable melt. 1 C.p. f-crystals, 2 tab., 1 Il. The invention relates to the production of needle-punched nonwoven material, which can be used for gas purification, for example in metallurgy.Known needle punched filter material of two layers of Mylar staple fiber, between the layers which is otnesti, g/m2- 550
Air permeability (at a pressure drop of 5 mm of water. Art.) DM/MC - 7020
The breaking load of not less kgf
Length - 140
Width - 100
Elongation at break, %
Length - 50
Width - 70
Possessing advantages in surface density and air leakage, while the filter material has insufficient tensile load in width, including due to the lack of fixing the position of the warp and weft threads when weaving, small elongation, which reduces the service life of the filter due to low regeneration (fact sheet N87-0028, Astreinte, 1987).Closest to the claimed invention is non-woven filtering material consisting of two layers of polyester fibers 0.33 Tex ("f", THE 17th of the RSFSR, 1992) between the layers which is woven frame comprising polyester fibers. Layers and frame are fastened together by hypoproteinemia.Performance filter material:
Surface density, g/m2- 490
Breaking load strips h, mm
Length - 170-15 Dan
Width - 120-15 Dan
Elongation at break, %
Length - 40
Width - 50
Breathability, DNial group, with this breathability, has a lower performance vozduhoochistki due to the reduction in the number of regeneration cycles. In addition, non-woven filtering material has insufficient load width, including due to the lack of fixing the position of the warp and weft threads when weaving, small elongation, which reduces the service life of the filter due to low regeneration.The technical result of the claimed solution is to eliminate these disadvantages, namely improving the quality of air treatment in time, the filter's lifespan by improving the regeneration of the filter.This object is achieved in that in the filter nonwoven material consisting of layers of polyester fiber, between the layers which is woven frame comprising polyester filaments interconnected by hypoproteinemia, one of the outer layers consists of two layers: the webs adjacent to the frame, optionally containing warp threads of cotton yarn with a diameter less than the diameter of the warp threads forming the sections in width, equal to or not less than the width of the seam filter and located with multiplicity equal to the width of the filter, starting from the edge fillrowmethodname densities of all layers of non-woven filtering material, respectively, 1:1,25:2.0 and the degree of hypoproteinemia 1:1:2, moreover, one or both of the outer layer is covered with a breathable melt.Example. The filter material is obtained on the AIN-1800 M1 using polyester fibers, such as fiber according to GOST - 10435-83, Tex-0,17 length shtabelirovanija 30-38mm. Time between layers is performed sequentially. First were getting outside of the canvas from the web with a surface density of 100 to 180 g/m2and the number of punctures 70104- 1801041 m2. Then the webs are placed second layer in the form of canvas and produce a bond by hypoproteinemia similar to previous, after perforation formed layer 3 with a surface density of 200 - 360 g/m2and the number of punctures 140104- 3601041 m2.The frame is made by supplemental warp cotton threads, forming sections, and the width is not less than 10 mm corresponding to the width of the connecting seam of the filter and located with multiplicity equal to the width of the filter (628 mm) from the edges of the filter nonwoven material. Introduction to the basis of plots of cotton threads allows more evenly to continue weft threads and thereby increase the tensile strength of the filter Mat which allows you to get canvas equal to the width of the filter with the connecting seam.On the formed layer 3 from the side of the webs impose a woven frame 2 plain weave weighing 150 15 g/m2and breaking load strips 50220 mm 245 kg and fasten hypoproteinemia form the layer.On the resulting layer side of the frame impose the outer layer 1 and fasten hypoproteinemia 280104- 720104. Then the resulting material is subjected to short-term heating at a temperature of 170 to 250 and a pressure of 20 to 50 kgf/cm2method of calendering. And calendering conditions of operation provided with one or two sides.The material obtained was evaluated according to the standards: surface density - according to GOST 15902.T-80, the thickness at specific load of 980 PA - according to GOST 12023 - 66, the breaking load and destruction - according to GOST 15902.3-79, the permeability - according to GOST 12088 - 77.The characteristics of the material from the ratio of the surface density and hypoproteinemia presented in table.1 and 2.From the data table. 1 and 2, it is seen that with increase of the surface density of layers of non-woven filtering material (examples 5, 6) while maintaining the ratio of hypoproteinemia, temperature feces increasing temperature calendering (example 7) with preservation of indicators increases breathability while reducing service life. Calendering with two sides (example 9) allows to increase service life of the filter by increasing the number of regeneration cycles.Only the stated set of characteristics (the ratio of surface density and hypoproteinemia) with a corresponding pressure of the calender and temperature, ensuring the availability of breathable melt (examples 1, 2, 3), lead to the technical result.thus, in comparison with the prototype filter non-woven material has a higher quality air cleaning time and long life filter through improved regeneration of the filter, it also reduces the amount of equipment used in manufacturing. 1. Filtering non-woven material consisting of layers of polyester fiber, between which is woven frame comprising polyester fibers, and layers are connected by hypoproteinemia, wherein one of the outer layers consists of two layers: the webs adjacent to the frame, optionally containing warp threads of cotton yarn with a diameter less than the diameter of the warp threads forming the sections in width, equal to or not less than the width of the seam of the filter and the punctured layer, bonded together by hypoproteinemia, when the ratio of surface densities of all layers of non-woven filtering material, respectively, 1 : 1,25 : 2.0 and extent of hypoproteinemia 1 : 1 : 2, with one of the outer layers is covered with a breathable melt.2. The material under item 1, characterized in that both the outer layer is covered with a breathable melt.
FIELD: textile industry.
SUBSTANCE: three-dimensional nonwoven fibrous textile material is composed of netted woven carcass and layers of fibrous cloths arranged at both sides of carcass and mechanically attached thereto. Carcass is produced from thermoplastic weft threads with linear density of 29-72 tex and thermoplastic warp threads with linear density of 14-20 tex and surface density of 80-220 g/m2. Said threads are preliminarily subjected to shrinkage. Method involves applying onto melted netted woven carcass layers of fibrous materials and mechanically attaching said layer in alternation to each side; applying onto each side of carcass at least one layer of fibrous cloth and attaching it by needle stitching; subjecting nonwoven material to thermal processing at temperature of 80-1580C under pressure of 0.3-0.6 MPa for 40-120 min.
EFFECT: improved organoliptical properties and improved appearance of material.
FIELD: textile industry, in particular, versions of nonwoven fibrous material made in the form of needle stitched web.
SUBSTANCE: material is manufactured from mixture of high-melting point and various low-melting point fibers, with main fiber being two-component polyester fiber of "core-coat" type. Polymer of "coat" has melting temperature substantially lower than polymer of "core". According to first version, low-melting point fiber used is staple two-component polyester fiber of "core-coat" type having thickness of 0.4-1.0 tex, length of 50-90 mm and melting temperature of "coat" polymer of 105-115 C. High-melting point fiber is staple polyester fiber having thickness of 0.3-1.7 tex, length of 60-90 mm and melting temperature of 240-260 C. Ratio of fibers in mixture, wt%, is: staple two-component polyester fiber of "core-coat" type 30-70; staple polyester fiber the balance to 100. According to second version, nonwoven fabric additionally comprises auxiliary staple polypropylene fiber having thickness of 0.6-1.7 tex, length of 50-90 mm and melting temperature of 150-160 C. Ratio of fibers in mixture is, wt%: staple two-component polyester fiber of "core-coat" type 30-70; staple polypropylene fiber 5-20; staple polyester fiber the balance to 100.
EFFECT: improved operating properties and form stability of parts manufactured from nonwoven fibrous material under conditions of changing temperature loadings.
3 cl, 1 tbl, 5 ex
FIELD: chemical and light industry, in particular, production of viscose staple fiber containing antibacterial preparation for manufacture of non-woven material used for manufacture of air filters.
SUBSTANCE: method involves washing formed viscose threads; squeezing to provide 50%-content of α-cellulose; treating with aqueous catamine solution having mass concentration of 15-40 g/dm3; providing two-staged washing procedure in countercurrent of softened water at feeding and discharge temperature difference making 4-6 C at first stage and 3-5 C at second stage. Temperature of aqueous catamine solution is 18-30 C. Resultant thread has linear density of single fibers of 0.17-0.22 tex and mass fraction of 0.6-4.0% of catamine. Thread is subjected to drying process at temperature of drying drum surface of 80-90 C, followed by corrugation and cutting into 60-70 mm long fibers. Method further involves fixing resultant fibrous web by stitching process on substrate of thermally secured polypropylene having surface density of 10-30 g/m2.
EFFECT: enhanced antibacterial properties and reduced aerodynamic resistance of resultant material allowing blowing-off of fibers from filter layer by flow of air under filtering process to be prevented.
3 cl, 2 tbl, 6 ex
FIELD: reinforcement and protection of ground surfaces such as ground planning embankment slopes, automobile and railway roads, open pits, dry slopes of earth-fill dams etc from erosion processes by quick recovery of soil and plant layer.
SUBSTANCE: biomat is formed as multiple-layer, at least three-layer, structure including layers of cloth comprising artificial chemical fibers, and intermediate layer placed between each two cloth layers and secured therewith, said intermediate layer comprising plant seeds. Natural fibers are added into cloth so as to form mixture of natural and synthetic fibers, said mixture containing at least 15-50 wt% of synthetic fibers and 50-85 wt% of natural fibers from materials which form upon decomposition nutritive medium for plants, and surface density of cloth ranging between 250 and 800 g/m2. Apart from seeds of plants presented in cloth structure in an amount of 60-150 g/m2, cloth additionally contains nutrient mixture consisting of fertilizers, plant growth promoters and soil forming additives selected with soil-ground conditions of region where biomat is to be utilized and composition of used seeds being taken into consideration. Content of nutrient mixture is 20-90 g/m2. Also, natural or artificial sorbing substances are introduced into biomat structure in an amount of 30-600 g/m2 by embedding of these substances into cloth or composition of intermediate layer. Biomat may be readily unrolled on any ground surface and serves as artificial soil layer.
EFFECT: high moisture retention capacity providing formation of stable soil and ground covering, improved protection of ground surface from erosion processes, retention of plant seeds during growing, efficient development of root system during vegetation and high vitality of plant covering during formation thereof.
7 cl, 1 tbl
FIELD: technological processes.
SUBSTANCE: invention is manufactured out of thermostable or heat resistant fibres and may be used for manufacturing parts out of thermal structural composite material. Carbon nanotubes are in-built into fibre structure by means of their growing on the heat-resistant fibres of the basis.
EFFECT: provides more well-ordered tightening of parts and improvement of mechanical qualities.
31 cl, 6 dwg, 9 ex
SUBSTANCE: invention relates to an apparatus for colourless patterning of a textile fabric made of mutually interlaced and thus strengthened natural or synthetic fibres, preferably of a nonwoven fabric such as a wadding web, which is also dried in the case of a wet treatment such as hydrodynamic needling. The apparatus comprises a housing and a revolving drum provided therein, whereby the textile fabric is pressed by an overpressure and underpressure against the drum having perforations so that the cross-sectional areas of the perforations generate a picture pattern on the textile fabric, wherein an external peripheral surface of the drum being subject to drawing is provided with perforations depicting an image, which perforations act in diverse pattern-imparting fashions on the textile fabric resting thereon. Moreover, the drum and its external peripheral surface are microperforated as a whole and thus fluid-permeable, and the pattern-imparting perforations are sized larger than the microperforation of the surface supporting the textile fabric, Moreover, the textile fabric is capable of leading the fluid away from the entire surface in a region of the pictorial pattern and also beyond peripheral regions of the pictorial pattern.
EFFECT: providing a method with which a pattern can be continuously imposed on a nonwoven fabric in the course of treatment.
11 cl, 2 dwg
FIELD: textile; paper.
SUBSTANCE: presented bed for implementation of hydrocrowding process is manufactured by means of including in it depressed fibres during its manufacturing or forming of depressed fibres by means of calendering or grinding of initial fabric. Including of depressed fibres into bed at manufacturing of nonwoven fabrics provides higher crowding of fibres forming nonwoven fabrics.
EFFECT: creation of more rugged finished nonwoven material.
20 cl, 10 dwg
FIELD: textile; paper; process.
SUBSTANCE: method provides forming of composition nonwoven material with surface layer, underlayer and wireframe interlayer made of polymer material, at that received structure is passed through shafting. In the course of protective material receiving surface layer and underlayer form with surface density 200-400 g/m2, at that thickness of wireframe interlayer is 100-250 micron. Layers binding is implemented by means of passing through tightly pressured shafting, at that ratio of shafts diameters is 1:[6-8], big shaft is heated till temperature 180-250°C, and its rotational velocity is 1.2-4 rpm. Finished nonwoven material is enrolled and held at temperature 18-24°C during at least three days.
EFFECT: improvement of material physical properties; reduction of ecological stress to environment and reduction of material and technical consumption at its recovery.
1 tbl, 1 ex
FIELD: textile, paper.
SUBSTANCE: invention refers to nonwoven material technology and can as a base of building, finishing and other similar materials. Method for making nonwoven needled felt involves pulverisation and emulsification of mixture, rest, hackle webbing, cure, dipping in binder, drying, and cooling. Thus rest is followed with straight and cross hackling packed within at least five web layers needle-punched over two stages. Besides before the second stage, reinforcing filament is added, while material is pull-up smoothed, glazed and dipped in binder, dried and processed in cold glazer.
EFFECT: higher efficiency of method for making nonwoven needled felt with improved application performance.
12 cl, 2 tbl
FIELD: engineering procedures.
SUBSTANCE: one version of the method consists that the cloth is placed on porous substrate movable on the straight or rotating about the axis. At least one side of the cloth is processed with some water jets rowed perpendicularly to cloth moving direction. Herewith a row is formed with one-section jets and at least other section jets different from the first one.
EFFECT: improved surface properties of the product.
33 cl, 17 dwg