The method of reinforcement of non-woven material, paper, cardboard and device for its implementation
(57) Abstract:Usage: the invention relates to the textile industry, the production of nonwovens and can be used in the pulp and paper industry for the production of reinforced paper, cardboard and other materials from fibrous materials. The essence of the invention is that the reinforcement material includes an introduction to the structure of the formed material during its manufacture directly at the stage of molding on the grid by means of the feeding device installed in the forming zone at a distance from the mesh reinforcing material. This reinforcing material is injected to a predetermined depth formed material by adjusting the position of the feeding device along the grid and place it at a distance of 5-10 mm from it. Given the design of the device for reinforcement. 2 S. and 1 C.p. f-crystals, 2 Il. The invention relates to the textile industry, namely, the production of nonwoven materials (tissue, saklabanaki) and can be used in the pulp and paper industry for the production of reinforced paper, cardboard and other materials from fibrous materials.The implementation of the method of reinforcement is possible if the intended use for this device, known from the aforementioned source that contains a tool for setting loose fibrous suspension, forming a grid with drying and suction boxes and set over a forming mesh adaptation for filing with Creel reinforcing material.The problem to which the invention is directed to the simplification of the manufacture of the material and expansion of the functionality of the device.This is achieved by the fact that the introduction of reinforcing material is carried out to a predetermined depth formed material by adjusting the position of the feeding device along the grid and place it at a distance of 5-10 mm from it. As a reinforcing material use rovings, yarn, fabrics sparse structures, the number and mutual arrangement of the input form of rovings, yarns arbitrary. Device for feeding reinforcing material mounted movably relative to the forming fabric with the possibility of hinge rotation at a given packet, or in the form of a wire frame with slot exit.The inventive method of reinforcing non-woven fabric is carried out as follows.Reinforcing strands, rovings, unwinding from the spools, cops, inlets, mounted on the Creel, refuel with water (air flow) in the feed tube fixtures. After that, the input device with seasoned, loose hanging threads is determined depending on the depth of the sealing reinforcing material in the appropriate place forming part of the machine at a distance of 5-10 mm from the inclined grid.Turn the package tube feeding device is fixed in a predetermined position so that the reinforcing filaments, rovings were located in the machine direction.Any loose ends of yarn, rovings under the influence of the velocity head of water passing through the inclined grid, pressed to the surface of the partially formed of non-woven material and are fond of moving mesh.As further forming nonwoven material, reinforcing strands, rovings fully covered by fibrous mass, lying, ultimately, its thicker.Molded reinforced by the action of vacuum, created in the suction boxes, the final dehydration of nonwoven material coming next on subsequent technological transitions.As mentioned above, adjusting the position of the feeding device along the inclined mesh, reinforcing strands, rovings can be entered in any depth nonwoven material.So, with the introduction of reinforcing yarns, rovings at the initial or final stage of forming nonwoven material, reinforcing strands, rovings will be located directly in the surface (lower, upper) layers of nonwoven material.When applying reinforcing yarns, rovings in the middle of the process of forming a non-woven material, reinforcing strands, rovings will be located in the thickness of the material, i.e. in the middle of the cross-section of non-woven material.the number and mutual arrangement of the reinforcing fibres, rovings, determined by the purpose of non-woven material, arbitrary.The introduction of reinforcing yarns, rovings along the edges form a nonwoven fabric, strengthened its edges.With the introduction of reinforcing yarns, rovings at the same distance from each other across the width of the nonwoven material, the latter along the whole of its area, i.e. in the transverse and longitudinal direction, the reinforcing material is a fabric sparse structure.The reinforcement nonwoven fabric sparse patterns is carried out similarly to the above, the present method.Reinforced above by way of non-woven material almost has the strength characteristics of the reinforcing material.In Fig. 1 schematically shows a device for reinforcing non-woven material, Fig.2 section a-A.Device for reinforcing non-woven material consists of an inlet device 1, the inclined grid 2 drying 3 and 4 suction boxes.Perpendicular to the inclined grid 2 by means of bracket 5 adjustably mounted input device 6.Device for reinforcing non-woven materials supplied by the Creel 7 installed on the bobbin 8, the ears 8, 8 bays, sitepromotion 9.The input device 6, is designed to serve as a reinforcing material of fibers, rovings comprises a series of tubes 10 connected with a certain step in the package, swivel rotating by a certain angle.Device for reinforcing non-woven material works as follows.Dilute fiber suspension from the inlet device 1 is supplied to a moving inclined grid 2. Passing through the inclined grid 2, the fibrous mass settles on it, shaping non-woven material, and a filtered water flow freely in the dewatering boxes 3 located under the inclined grid 2.Reinforcing strands, rovings, unwinding from the spool 8, the ears 8, 8 bays, installed on the Creel 7, passing through neteprovody 9, the tube 10 of the feeding device 6, is coming to the surface of the partially formed of non-woven material, covered by a fibrous mass. Molded reinforced non-woven material with an angled grid 2 comes out of suspension.After leaving the forming zone, non-woven material passes over suction 4 drawers, doing further subsequent process operations. 1. The method of reinforcement of non-woven material, paper, cardboard, including the introduction of a reinforcing material into the structure of the formed material during its manufacture directly at the stage of EDI, characterized in that the introduction of the reinforcing material is carried out to a predetermined depth formed material by adjusting the position of the feeding device along the grid and place it at a distance of 5 to 10 mm from it.2. The method according to p. 1, characterized in that the reinforcing material used rovings, yarn, fabrics sparse structures, the number and mutual arrangement entered reinforcing rovings, yarns arbitrary.3. Device for reinforcing non-woven material, paper, paperboard, containing means for inlet of the fibrous suspension, forming a grid with drying and suction boxes and set over a forming mesh adaptation for filing with Creel reinforcing material, characterized in that the device for feeding reinforcing material mounted movably relative to the forming fabric with the possibility of hinge rotation at a given angle, it is made in the form of a series of tubes connected with a certain step and in any quantity in the package or in the form of a wire frame with a slit exit.
Known methods of filling fibrous mass on the grid paper Mamin, including the distribution of mass across the width of the headbox, the dispersion of mass by the flow of fluid in it and the alignment of mass and.with
FIELD: pulp-and-paper industry.
SUBSTANCE: fabric 10 is designed to be connected by stitches upon placement onto papermaking machine. Fabric 10 has base fabric 14 with stitch loops on its transverse edges for connecting fabrics into endless web upon placement thereof onto papermaking machine. Stitch made by interdigitated arrangement of stitch loops connected with one another through pin 20 is closed with strip 24 from flow resistant material, or, if base fabric has upper and lower layers, strips of said material are placed between upper and lower layers close to stitch. Owing to flow resistant material, air and moisture permeability of fabric portion adjoining to stitch is essentially identical to said permeability of other portion of fabric for papermaking machine. At least one web layer of staple fiber is tingled with base fabric and flow resistant material.
EFFECT: increased efficiency by providing compensation of difference in air permeability and moisture permeability between stitch and other part of fabric for papermaking machine.
16 cl, 5 dwg
FIELD: equipment for through blowdown drying, may be used in forming, pressing and drying sections of papermaking machine.
SUBSTANCE: base-forming grid has warp threads interwoven with weft threads. Some warp threads are threads of first type and some warp threads are threads of second type. First type warp threads are interwoven with weft threads by plain weave and second type warp threads are interwoven with weft threads by 2/2 serge weave, with first type warp threads alternating with second type warp threads. Second type warp threads are extending in wavy path between adjacent first type warp threads to render required openness to grid.
EFFECT: provision for producing grid with open structure to provide for effective mutual mechanical binding of cured resin with warp and weft threads.
16 cl, 6 dwg
FIELD: shearing equipment.
SUBSTANCE: device comprises frame, drive, drum, cutting mechanism with movable blade, fixing mechanism for initial blade position fixation relative drum and accumulation means. Device is provided with blocking mechanism, which secures position of movable blade drive shaft, discrete angular drive of movable blade and changes corrugated cardboard blank lengths. The blocking device is made as screw pair. Screw pair nut is pivotally connected to the frame, screw thereof is pivotally linked with double-armed lever having pivot pin aligned with axis of drum rotation. The second arm of the lever is kinematically linked with T-shaped connecting-rod of cutting mechanism drive by control-rod. One end of connecting-rod is connected to crankshaft on drum pivot, another end thereof is mounted on control-rod attached to swinging unit of three-armed lever of discrete angular drive mechanism of movable blade arranged to perform angular swinging about pivot of mutually connected brake drum and drive pinion. Drive pinion is brought into engagement with driven pinion on cutting mechanism drive shaft end. Pair of mutually spring-loaded brake blocks is installed in brake drum kinematically connected through control-rods with ends of oppositely directed arms of three-armed lever. Blocking mechanism for cutting mechanism drive shaft blockage is mounted on another end of above shaft. The blocking mechanism is made as brake drum installed on frame. Pair of mutually spring-loaded brake blocks is arranged into the drum and kinematically linked with double-armed lever by control-rods. The double-armed lever is coaxial with geometrical axis of cutting mechanism drive shaft including lever of mechanism for fixing movable blade in its initial position. The lever is linked with double-armed lever by control-rod. Free end of double-armed rod has roller periodically cooperating with frame rest. Pivot of double-armed lever of fixing mechanism is arranged on bracket of hollow blade holder shaft. Blade holder is installed on hollow shaft with the use of threaded pins. Blade is removably installed in blade holder groove. The blade is made as conventional replaceable bar for cross-cutting corrugated cardboard. Hollow blade holder shaft is coaxially arranged on cutting mechanism drive and may perform limited rotation. Hollow blade holder shaft is connected with cutting mechanism by a plurality of resilient members.
EFFECT: increased output, operational reliability, cutting quality and blank length accuracy.
FIELD: mechanisms and processes for cutting corrugated cardboard.
SUBSTANCE: apparatus includes framework, drive unit, drum, cutting mechanism with movable cutter, mechanism for fixing cutter blade relative to drum and accumulator. Apparatus also includes mechanism for changing length of blanks, unit for fixing its position, blank length indicator. Mechanism for changing length of corrugated cardboard blanks is provided with screw gage whose nut having control knob is jointly secured to framework. Screw of said mechanism is kinematically coupled with two-arm lever mounted with possibility of angle rocking in journal of drum shaft. One arm of lever is jointly coupled with blank length indicator; distal end of its other arm has pivot for mounting driven gear wheel and crank. Said gear wheel engages with driving gear wheel mounted on end of drum. Crank is provided with roller mounted in connecting link of mechanism for converting uniform rotation to intermittent one. Such mechanism includes driving pinion mounted in end of shaft of cutting mechanism and mutually opposite drive members mounted on platform and cyclically engaging with driving pinion. Said platform is mounted on upper ends of pair of parallel tie rods that may perform reciprocation motion in guide and are spring-loaded relative to said guide. The last is mounted with possibility of angular rocking on end of shaft of cutting mechanism near gear wheel. Lower parts of tie rods are arranged with possibility of fixing their position in connecting link of mechanism for converting uniform rotation to intermittent one. In other end of shaft of cutting mechanism are mounted: member for fixing intermediate positions in the form of braking drum secured to framework and pair of mutually spring-loaded and mounted one opposite to other braking shoes with friction cover plates. Braking shoes are adjoined to inner cylindrical surface of braking drum. Mean portions of braking shoes are joined by means of tie rods with two-arm lever mounted in end of shaft of cutting mechanism. In mean part of said shaft along the same axis hollow shaft of cutter holder is arranged, both shafts are mutually joined through bearing assemblies, brackets and set of elastic members placed between shafts. Said shafts are also joined by means of bracket of mechanism (two-arm lever) for fixing cutter blade relative to drum. Rocking axle of mechanism for fixing cutter blade is mounted in bracket of hollow shaft. One end of two-arm lever is joined with tie rod
for coupling with lever of shaft, other distal end of two-arm lever is provided with roller that cyclically engages with stop secured to bracket of framework.
EFFECT: enhanced efficiency, operational reliability, simplified design, lowered labor consumption for maintenance and adjustment, reduced energy consumption, increased useful life period.
5 cl, 31 dwg, 3 tbl
FIELD: process for treatment of textile materials, in particular, whitening of flax fiber for producing of hygroscopic wool used for medicine purposes.
SUBSTANCE: method involves subjecting flax fiber to oxidizing cooking followed by whitening with the use of hydrogen peroxide in the presence of stabilizing preparation based on oxyethylidene diphosphonic acid; after final rinsing, providing brightening processing, preferably with the use of solution containing higher fatty acid based softener used in an amount of 0.5-1.0 g/l. Method is realized in industrial plants with the use of proper equipment and chemical substances available and produced on industrial scale by home enterprises. Said method does not require substantial alterations in chemical processes.
EFFECT: increased whitening extent, capillarity and moisture absorbing capacity of wool produced.
2 tbl, 5 ex
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: manufacture of web for papermaking machine.
SUBSTANCE: method involves providing spiral winding of band-shaped woven web, said web having first and second lateral sides, along which first and second edges are respectively extending, each of said edges comprising at least one longitudinal thread interwoven with transverse threads. First and second gaps are arranged adjacent to first and second edges inward thereof, wherein said gaps are free from longitudinal threads, and transverse threads are joining edges with band-shaped web. During spiral winding of band-shaped web, first edge is placed within second gap and second edge is placed within first gap of adjacent coils for producing of continuous spiral seam formed by joining of adjacent coils together. Method allows wide web to be produced from relatively narrow band-shaped spiral-wound woven web.
EFFECT: increased efficiency and provision for producing of wide web for papermaking machine from narrow band-shaped webs.
28 cl, 5 dwg
FIELD: paper and cardboard production in pulp-and-paper industry.
SUBSTANCE: method involves preparing cellulose suspension; flocculating and draining suspension on net for producing of paper web; drying paper web. Flocculation process is initially performed with the use of cation-active material, such as natural or synthetic polymer, followed by flocculation with the use of flocculant system including silicon-containing material and organic microparticles having diameter less than 750 nm in unswelled state.
EFFECT: improved draining, holding and forming process.
28 cl, 3 dwg, 12 tbl, 3 ex
FIELD: manufacture of cotton cloth for paper-making machine.
SUBSTANCE: the cotton cloth is manufactured by spiral winding of laminated structure with formation of a great number of coils. The laminated structure has lower and upper layers representing bands of the same width. The upper and lower layers are positioned one above the other with a transverse shift so that the non-laminated part of the lower layer is positioned along one side edge of the laminated structure, and the non-laminated part of the upper layer-along the other side edge. At spiral winding of the laminated structure the non-laminated part of the upper layer in one coil is laid on the non-laminated part of the lower layer of the adjacent coil and connected to it obtaining a cloth for a paper-making machine from the spiral wound structure.
EFFECT: provided preliminary manufacture of laminated structure in the form of a band and further use for obtaining of cloth having preset values of width and length by spiral winding.
27 cl, 4 dwg
FIELD: thread for producing fabric used in manufacture of forming, pressing and drying parts of papermaking machines and utilized as reinforcing base for belts with polymer coating used for manufacture of paper, or belts for corrugating machine, or for other commercial units wherein basic material is subjected to dehydration.
SUBSTANCE: fabric is made from single filament thread spirally wound to form closed spiral whose adjacent coils tightly adhere to one another. Single filament thread has first side and second side, said sides having opposite and identical shape. As a result, on spiral winding and resultant forming of multiplicity of coils, first side is tightly inserted into second side of adjacent boundary coil or adheres thereto, with adjacent spiral coils being joined to each other by their adjoining first and second sides to thereby form fabric.
EFFECT: provision for obtaining of desirable air and moisture permeability, and improved controlling of paper bearing surface.
50 cl, 16 dwg