Method and device for manufacture of polymeric fibres and textile products including many polymeric components in closed system

FIELD: textile, paper.

SUBSTANCE: this invention refers to method and device for manufacture of polymeric fibres and textile products in a closed system. System for manufacture of non-woven cloth from fibres includes a spinning beam unit configured for processing and supply of many flows of polymers for extrusion through the spinning nozzle holes. At that, spinning beam unit includes many supply passages interconnected as to fluid medium with the spinning nozzle holes where at least two supply passages are configured so that they can supply separate flows of polymers with various polymeric components to the spinning nozzle holes. Besides spinning beam unit includes many collectors for separation and independent keeping of various temperatures for various flows of polymers with various polymeric components. Each collector provides homogeneous heating of polymer flow flowing inside discharge pipe of polymer inside each collector, each discharge pipe is enveloped with heat exchange pipe in fact at homogeneous temperature, quick cooling chamber for receiving and quick cooling of extruded fibres from spinning nozzle holes. At that, quick cooling chamber includes gas supply source for direction of gas flow to extruded fibres. Also the system includes an exhaust chamber interconnected with quick cooling chamber and configured for receipt and release of quick cooled fibres, and a forming surface for receipt of extruded fibres leaving the exhaust chamber and forming of non-woven fibrous cloth on the forming surface. At that, system supports extruded fibres in closed space between the spinning nozzle holes and exhaust chamber so that contact of fibres to uncontrolled gas flows can be prevented.

EFFECT: simplifying the fabrication of wide range of fibres from variety of polymeric components and textile products having the required linear density of fibre (denier) and degree of homogeneity.

8 cl, 9 dwg

 

The technical field to which the invention relates.

The present invention relates to a method and apparatus for the production of polymer fibers and textiles in a closed system, where the fiber and textile products include a variety of different polymer components.

The level of technology

In the technique of production of non-woven textile materials having certain desirable characteristics known a number of closed spinning systems. For example, in each of the U.S. patents№№5460500, 5503784, 5571537, 5766646, 5800840, 5814349 and 5820888 described closed system for the production of nonwoven fabrics and fibers. These patents is incorporated into the present application as reference material. In a typical closed system fiber Prauda, rapidly cooled and extruded in a conventional closed chamber or in the surrounding space so that the air or gas stream, which is used for rapid cooling emerging from the Spinneret fibers were also used for drawing and discharging fibers after surgery rapid cooling.

Unlike open spinning systems (i.e. systems in which the extruded filaments are not subjected to spinning, rapid cooling and ventilation in normal closed chamber or space and on some or all of the stages of forming, as a rule, open for OCD the global environment), closed systems exclude any influence from uncontrolled and potentially harmful flow of air in the process of forming fibers. Indeed, a typical closed spinning system limits the contacting extrudable fiber only with the necessary flow of air or gas, having in the process of forming fibers a certain temperature, which facilitates obtaining a very accurate and uniform fibers with the desired linear density of yarn (denier), which is difficult to find in a typical open-spinning system.

One of the most important components in any spinning system is a polymer feed system, commonly called spinning beam, which delivers a flow of molten polymer in the selected dose or at a selected flow rate to a spinning system for extrusion into filaments through a Spinneret. One type of spinning beams, the most frequently used and the most suitable for spinning fibers in a closed system, is spinning beam, usually called "hangers for coats". This type of spinning beams consists, generally, of two sections, made of metal or any other suitable material and connected impervious to fluid way on the front or mating surfaces, where each pair is defined surface is etched grooves, which correspond with the grooves etched on the other side, as their mirror reflection. Grooves etched on each of the mating surfaces form a profile that resembles the triangular configuration of the hanger for coat.

Figure 1 shows a perspective image of the spinning beam type "hangers" with the spatially separated parts. Spinning beam 2 includes two generally rectangular half or section 3, with the number of heaters 12, located inside each section for heating a fluid polymer flowing through the spinning beam in the direction of the Spinneret. In the process, the flow of molten polymer is sent (e.g., pump) in the introductory part 4 of the profile channel "hangers" spinning beams 2 and moves in the upper portion of the part 6 of the triangular channel profile "hangers", which is located below and connected to a fluid environment with the introductory part 4. Channel "hangers", limited excretory part and the triangular part is formed corresponding grooves located on the conjugate surfaces of the two sections 3 spinning beams. When entering the channel 6 flow of molten polymer is divided in two divergent channel sections 7 triangular part of the channel, where the divided flows continue to move and then connect the horizontal channel section 8, located in the lower end of the channel "hangers" between the lower ends of the diverging channel sections. Horizontal channel section also passes longitudinally along the lower end of the spinning beam 2. On the lower end of the spinning beams fixed mesh filter and the plate 9, and filler 10, having a number of holes along its longitudinal dimension. Strainer, plate and filler also placed longitudinally along the lower end of the spinning beams 2 and flush with the horizontal channel section 8, using with her fluid. Thus, the flow of molten polymer, heading in a horizontal channel section 8 of the channel "hangers", continues to flow through the strainer and turning the plate 9 to filiere 10, where the flow of the polymer is then extruded through orifices of a Spinneret with the formation of multiple polymer strands. Configuration channel type hangers" especially advantageous because it has simple design and creates a substantially uniform pressure drop, resulting in a uniform release of polymer flow in a horizontal channel portion of the channel "hangers" and uniform extrusion of molten polymer through the draw hole.

Although closed spinning system in combination with a spinning beam type "hangers" useful for whom proizvodstva certain polymer fibers, with the desired uniformity and with a linear density of yarn, spinning beam type "hangers" encounters problems when the production of more complex fibers and non-woven sheets of fibers using two or more different polymeric component. In particular, in a closed spinning system such as "hangers" it is very difficult to process two or more different polymer components with different melting temperatures in the production of multicomponent fibers or textiles containing multiple polymer components. For example, using a closed spinning system with a spinning beam type "shoulders", it is extremely difficult to produce a bicomponent fiber consisting of two polymer components with substantially different melting points (for example, using double spinning beam type "hangers", in which the channels of the type "hangers" are adjacent to each other), because of the spinning beam type "hangers" are usually maintained at essentially the same temperature using electric heaters placed in sections of the spinning beam. The difficulty is exacerbated in the case of polymer components to avoid gelation or cross-linkage of the polymers should be kept at the melting temperature or when PTS is ery close to him temperatures. In addition, when the system type "hangers" serves to filiere uniform flow of molten polymer, there is the difficulty of metering the flow of molten polymer through a spinning beam type "hangers" to draw kit, which is an important feature in the production of more complex types of fibers, such as multi-component fibers having different geometries and/or cross sections of the polymer components. Thus, the flexibility of the spinning beam type "hangers" are very limited with respect to the ability to produce a wide variety of fibers and textiles in a closed spinning system.

As follows from the above, there is a need to produce a wide variety of fibers and textiles, including two or more different polymer components in a closed spinning with a spinning beam, which could give the flow of molten polymer of two or more different polymer components for the production of fibers in a closed spinning system.

Disclosure of inventions

Thus, in light of the foregoing and other reasons that will become clear after a complete description of the invention, the present invention is the creation of a closed spinning system, which could produce a wide times kobresia single and multicomponent fibers and textiles, comprising different polymer components and with the desired linear density of the yarn and the degree of homogeneity.

Another objective of the present invention is to provide a unit of the spinning beam for a closed system, which could serve the flow of molten polymer to filiere closed system, and the flow of molten polymer would include at least two different polymeric component having a different melting point.

Another objective of the present invention is the maintenance of two different polymer components when they are significantly different melting temperatures in the unit of a spinning beam while supplying streams of molten polymer to filiere.

Another objective of the present invention is the use of multiple dosing pumps for individual regulation of the volumetric flow rate of melts of different polymers to filiere.

The above objectives are achieved individually and in combination, and it is not envisaged that the present invention is required to combine two or more purposes, unless it specifically does not require the accompanying claims.

According to the present invention, the above difficulties associated with the formation of fibers and textiles, with multiple polymeric component is s in a closed system, eliminated thanks to the use of closed spinning system, which includes a unit of a spinning beam, which is able to bring to the die plate with lots of streams of molten polymer, of which at least two polymer stream contains different polymer components, which have a desired uniformity and linear density of the yarn. Spinning beam includes multiple dosing pumps for independent adjustment of the volumetric velocity of one or more polymeric threads, and at least two thermal control unit that independently and uniformly heat the different polymer components to their corresponding melting temperatures, while maintaining thermal discrimination between different polymer components.

These and additional objectives of the invention, the characteristics and advantages of the present invention will become apparent upon consideration of the following definitions, descriptions and descriptive figures of specific embodiments of the invention, where the same numerical position in the different figures are used to denote the same components. When these descriptions delve into the specific details of the invention, it should be borne in mind that it is possible and indeed there are options that should be obvious to a specialist is in on the basis set out in the request.

Brief description of drawings

Figure 1 is a perspective image with a spatial separation of parts of a traditional spinning beam type "hangers" for supplying fluid molten polymer bushings kit closed system.

Figure 2 is a side view in partial section of one of the embodiments closed spinning system of the present invention.

Figure 3 is a perspective view in partial section of one embodiment of the implementation unit of the spinning beams of a closed system in figure 1.

Figure 4-8 - types in cross-section, illustrating embodiments of various groups of fibers that can be obtained using the closed system of the present invention.

The implementation of the invention

Closed spinning system of the present invention is described further with reference to figure 2 and 3. Used in the application of the expression "closed system" and "closed spinning system" refers to a spinning system, which includes the stage of extrusion, the stage of rapid cooling and the stage of drawing, the flow of air or any other gas used for rapid cooling of the fibers at the stage of rapid cooling, is also used for drawing and discharging fibers at the stage of drawing, and the stage of extrusion, rapid cooling and exhaust are completely isolated about what transto (i.e. in one cell or multiple connected cameras). Used in the application, the terms "fiber", unless otherwise indicated, include both fiber of a certain length such as the traditional staple fibers and essentially continuous structure type of the individual threads. The expression "two-component fiber" and "multicomponent fiber" refers to fibers having at least two parts or segments, where at least one of the segments includes one polymer component, and the remaining segments include other than a polymer component. The expression "partial mesh polymer fiber" refers to fibers composed of two or more different polymeric components, combined together with formation of a substantially homogeneous polymeric composition of polymeric components in molded fiber.

Fiber, processed in a closed system of the present invention can have virtually any cross-sectional shape, including but not limited to: circular, elliptic, ribbon, shape, bones for dogs and busy cross-sectional shape. Fiber may include one or a combination of molten suitable for spinning resins, including (but not limited to): a homopolymer, copolymers of ternary copolymers and their mixtures: polyolefins, poly the ministries of foreign Affairs, polyesters, policano acid, nylon, poly(trimethylpentanediol) and elastomeric polymers, such as thermoplastic polyurethane. Suitable polyolefins include but are not limited to such polymers as polyethylene (for example, polyethylene terephthalate, low density polyethylene, high density polyethylene, linear low density polyethylene), polypropylene (isotactic polypropylene, syndiotactic polypropylene and blends of isotactic polypropylene and atactic polypropylene), poly-1-butene, poly-1-penten, poly-1-eksten, poly-1-octene, polybutadiene, poly-1,7-octadien, poly-1,4-hexadiene, etc. and copolymers of ternary copolymers and mixtures thereof.

Figure 2 is a closed system 100 is depicted as including unit 102 spinning beams for supplying streams of molten polymer bushings kit 104 and isolated camera 106 for education and supply of extrudable fiber 108 for forming a cloth tape 116, resulting in a non-woven fabric fibers 118. It should be noted that shown in figure 2 the design of the closed system is given only as an example and the present invention is by no means the case is not limited to such construction. For example, to implement the present invention can be used a number of structures isolated, including (but not on rancevas them) design of isolated cells U.S. patent No. 5460500, 5503784, 5571537, 5766646, 5800840, 5814349 and 5820888. Unit spinning beams", spunbond kit, a stand-alone camera and tape made of metal or any other material suitable for receiving and processing the liquid streams of molten polymer.

Unit 102 spinning beams gives the number of independently metered streams of molten polymer bushings kit 104 for extrusion and formation of fibers in a closed system 100. As described below, the block spinning beams, there are three separate and independent heating system for heating the two separated flows of fluid of the polymer, passing in the Assembly of the spinning beam and the spinning beam. As follows from figure 3, the unit 102 spinning beams includes a generally rectangular hollow frame, in which are a pair of almost cylindrical and hollow distribution headers 122, 130 and generally rectangular spinning beam 140. Each of the distribution headers 122, 130 is located longitudinally along the rear wall 150 of the frame, and the collector 130 is slightly elevated above the manifold 122 and essentially parallel. An introduction pipe 123 is held in the transverse direction from the Central section of the manifold 122 through the rear wall 150 of the frame 103 and further connected with the input polymer source (not shown). Similarly another introductory pipe 131 is held in aparecem direction from the Central section of the reservoir 130 through the upper rear wall 150 of the frame and connected with another polymer feed source (not shown). Part of every introductory tube is also held inside the reservoir and is connected with distributing the polymer tube that is located inside the reservoir, as described below. The manifold 122 capped at one end and the other end connected to the feeding hot environment pipeline 124 passing through the side wall 152 of the frame 103 and connected with the feed hot environment source (not shown). The collector 130 is also closed at the end corresponding to the plugged end of the manifold 122 and the other end connected to the other feed hot environment pipeline 132, passing through the side wall 152 of the frame, and the supply pipe 132 is also connected to feed a hot environment source (not shown). Collectors are slightly displaced with respect to one another so that the end of the manifold 122, which is connected to the pipe 124, is located closer to the side wall 152 of the frame than the corresponding end of the manifold 130.

Each distribution manifold 120, 130 is located in the longitudinal direction distribution of the polymer tube, which is connected with the corresponding introduction pipe 123, 131, serving inside the collector. Each collector 122, 130 substantially surrounds and "panels" button located within the distribution pipe, thereby allowing the liquid heat transfer medium (for example, deutera) to do with correspond with what his feed pipe 124, 132 in the manifold, surrounding and passing warm liquid polymer inside distribution pipes. Collectors and associated with the reservoir system of pipes facilitate independent and separate heating of two different polymer components to different temperatures within the block 102 spinning beams. In addition, the design of the collector provides uniform heating of a fluid polymer flowing within each distributing polymer tube within each of the collectors due to the environment of each distributing polymer tube cooled with essentially uniform temperature. This feature heating is a significant improvement compared with an electric design, created in the spinning beam type "coat hanger"because the heaters in the spinning beam type "coat hanger" can be created in sections spinning beams undesirable thermal gradients.

Each distribution manifold 122, 130 additionally includes a set of six polymerization tubes 126, 134, passing transversely at approximately equal distances from each other in the longitudinal direction from the manifold toward the front wall 153 of the frame 103, and the transfer tube 126 (which depart from the manifold 122) substantially parallel peredatochnykh 134 (which depart from the manifold 130). Each transfer tube 126, 134 also takes place in the corresponding manifold 122, 130 and is connected at a suitable point with a corresponding located there distribution pipe. Due to the vertical offset between the collector 122 and the collector 130 in the armature unit of the spinning beam transfer tube 134 after their exit from the manifold 130 immediately directed vertically downwards to the manifold 122, with the result that they become substantially vertically aligned with the transfer tube 126 extending in the direction of the front wall 153 of the frame. The person skilled in the art it is clear that the distribution tube and the transfer tube connected to each of the distribution pipes in each of the manifold can have independent design to ensure the desired residence time of fluid polymer passing through the distribution pipe and is heated in the collector. When this length of all transmission tubes protruding from any of the distributing pipes, which are mostly the same, which provides almost the same time for all the liquid streams passing through these transfer tubes.

Spinning beam 140 is longitudinally near the front wall 153 of the frame 103. Spinning beam includes a set of six in General p is youhannah pump blocks 142, located at intervals in the longitudinal direction along the spinning beams, ensuring their compliance with any one of the transfer tubes 126, 134, extending from each collector 122, 130 in the direction of pumping units. Each of the pumping units 142 includes a metering pump 128, which is connected to the corresponding polymerizations tube 126 serving in the direction of the pumping unit. The transfer tube 126, 134 pass through the rear wall of the spinning beam and 140 and are connected with the corresponding dosing pumps 128, 136. Teplopodvodyaschey pipeline 144 moves away from the lower wall of the spinning beam and passes through the side wall 152 of the frame, connecting a further source that supplies liquid coolant (not shown). Spinning beam heated liquid coolant supplied by a pipe 144 which, in turn, heats and supports during operation of the spinning unit to the desired temperature pump blocks 142 and pumps 128, 136. When this pump blocks are made of material having low thermal conductivity, which allows to regulate or limit the amount of heat transferred between the pumping units, pumps and passing through the pumps fluid polymer. For example, in the processes of manufacturing fibers, which are two different polymeric component p is slishnimi melting, pumping units are heated to temperatures above the melting point. However, the polymer component with a lower melting temperature will never reach a higher temperature because of the limited heat transfer capability of the pump module.

Each of dosing pumps 128, 136 has, in addition, the inlet for receiving fluid from the corresponding polymer polymerizations tube 126, 134 and a number of conclusions for supplying fluid flows polymer with a given volumetric rate to the input channels in spunbond set 104. In one of the preferred embodiments each dosing pump has four outputs, allowing the unit spinning beams can serve two series of twenty-four streams flowing polymer, where the temperature and space velocity for one series regulated independently of the other series. Such an implementation option could, for example, to apply a metered flows of polymer from each series at intervals of about 15 cm along the length of the spinning beam, the length of which is about 4.2 meters, However, it should be noted that dosing pumps can have any number of suitable conclusions depending on the number of polymer threads that you want to migrate to draw kit.

Spinning beam 104 includes a variety of input channels for receiving flows of Tegucigalpa from the unit spinning beams, primarylocation systems, distribution systems and a Spinneret with a number of spinning holes for extruding polymer through them threads. The Spinneret holes can be, for example, are located in a substantially horizontal rectangular range in amount, typically from 1000 to 5000 per meter length of the nozzle. In accordance with the concepts of the present application, the expression "filler" refers to the lower most part of bushings kit, which delivers the molten polymer through orifices for extrusion in an isolated chamber 106. Filler can be made with holes drilled or etched through the plate or any other design suitable for production of the required flows fibers. Spunbond set mainly coordinates the flow of molten polymer from a spinning beam with the formation of a given type of fiber (e.g., multicomponent fibers, fibers with a special geometric configuration of the cross-section and so on), as well as a specified number of fibers, which is continuously extruded through the system. For example, spunbond kit may include channels that combine two or more fluid flows of different polymers coming from spinning beams before extrusion through the Spinneret holes. The orifices of the die can have different shapes (e.g. the measures round, square, oval, in the form of a keyhole, and so on), resulting in a gain fiber with different types of geometry of the cross section. One example of bushings kit that can be used for system 100, described in U.S. patent No. 5162074 (Hills), the disclosure of which is fully incorporated into the present application as reference material. However, it should be noted that the system 100 can use any traditional or any other spunbond kit for spinning fibers.

Insulated chamber 106 includes a phase 110 rapid cooling, located directly under the spunbond set 104, and exhaust mill 112, located directly beneath the site of rapid cooling. On opposite surfaces 106 about section 110 rapid cooling also connected a pair of pipes 114. Each of the pipelines 114 directs the air flow (indicated in a General way in figure 2 by arrows) in the opposite one from the other direction and in the direction of extruded filaments 108, leaving bushings kit 104 and passing through the section 110 rapid cooling. Thus, the extruded filaments are rapidly cooled on a plot of rapid cooling of the converging streams of air from the piping 114. The air flow is directed mainly in the direction of the AI, generally perpendicular to the threads 108 or slightly deviating in the direction of the exhaust going 112, which is located under the area of rapid cooling. However, it should be noted that the extruded threads, located on a plot of rapid cooling, can be sent to any number of streams of air (for example, one air flow) with any suitable orientation. In addition, it should be noted that rapid cooling of the filaments at the site of rapid cooling than air can be used with any suitable gas. However, depending on the types of polymer components and types of fibers to be formed, can also be used one or more adjustable steam or gazogorelochnyh flows for the chemical processing of the extruded filaments in a closed chamber 106 at the site 110 rapid cooling or at any other suitable site.

The camera 105 is mostly swirler configuration section of the exhaust mill, where the walls of the chamber converge with the formation of the tapered or narrowed section of the chamber within the exhaust mill, which facilitates the increase in flow rate passing through that section of the combined air flows. Increased volumetric flow rate of air in the exhaust mill provides the necessary pulling force to extrude and razresheni the threads. Exhaust mill 112 passes to the outlet openings in the chamber 106, which separated the required distance from the forming fabric tape 116.

Forming a cloth tape 116 is primarily continuous, breathable mesh ribbon type mesh tape Furdrine. Emerging from the isolated chamber 106 fibers are placed on the tape, forming a non-woven fabric. The tape is moved, for example, by means of rollers or any other suitable drive mechanism, feeding webs of fibers in one or more additional obrabotannykh areas. Below the ribbon 116 and in line with pin hole camera 106 is a recirculation chamber 120. The recirculation chamber includes a fan (not shown), which creates a negative pressure, or suction, inside the chamber 106 to send the combined air flows from section 110 rapid cooling through exhaust mill 112 in the recirculation chamber (designated in a General way in figure 2 by arrows). Drawn into the chamber 120, the air flow is recycled and fed back to the pipeline 114 for re-submission to the site rapid cooling 110. Preferably, the recirculated flow of air is directed through the heat exchanger and/or mixed with fresh air to maintain the required t is mperature for cooling air before returning to the area 110 rapid cooling. In one alternative implementation of a closed system can operate without the use of recirculating air flows. Instead, the fan can continuously direct the flow of fresh air into or through a stand-alone camera 106 and in this case, the air coming from the exhaust mill, not recycle for reuse, and is dissipated from the closed system.

The closed system 100 is described below using as an example a two-component method of spinning fibers in which the polymer components a and b are served in the Assembly of the spinning beam for forming a two-component fibers. However, it should be noted that the system 100 can produce a large variety of fibers, including single-component and multicomponent fiber. The molten stream of polymer And served in the unit 102 spinning beams through the introduction pipe 123, which is distributing the polymer tube, located within the distribution manifold 122. At the same time the molten stream of polymer is fed into the machine spinning beam through an introduction pipe 131, which is distributing the polymer tube, located within the distribution manifold 130. Liquid heat transfer medium is supplied through pipes 124, 132 is introduced into both of the collectors, where it surrounds ahogadas there distribution pipe and uniformly and independently heats each of the polymers a and b and/or supports necessary for them to temperature.

The flow of the polymer As it passes through the distribution pipe in the manifold 122 and is polymerizaton tube 126, which is transferred to the polymer And to the set of six dosing pumps 128, located on the pump blocks 142 in the spinning beam 140. Similarly, the flow of the polymer passes through a distribution pipe in the manifold 130 and is polymerizaton tube 134, which is transferred to the polymer In the set of six dosing pumps 136 located at the pumping units in the spinning beam. Dosing pumps 128 set a desired volumetric rate for transfer of multiple streams (for example, twenty-four) of the polymer And correspondingly aligned input channels located on spunbond set 104, while the dosing pumps 136 set the desired volumetric rate (which does not depend on flow rate established for the flow of the polymer (A) for the transfer of multiple streams of polymer In appropriately aligned input channels located on spunbond kit.

Independently of the dosed groups of streams of molten polymers a and b are routed through channels in spunbond set 104 and through the die plate, resulting in the formation of two-component polymer fibers, consisting of these two polymers. The type of generated duchampian the different fibers (for example, side-by-side, sheath/core, Islands in the sea" and so on) is determined by the design of bushings kit, in which separate streams of polymers a and b are combined in the right way at the die exit. In addition, it may be also installed and a suitable cross-section geometry for extrudable threads, for example by giving the Spinneret holes of one or more selected geometries.

Thread 108 consisting of polymers a and b, is extruded through the die plate and arrive on a site 110 rapid cooling of the isolated chamber 106, where the threads are exposed to the rapidly cooling air flows directed to the threads of the pipes 114. The fan in the recirculation chamber 120 creates a suction in an isolated chamber that directs air flow through section 110 of the rapid cooling of the exhaust mill 112, where the air flow speed is increased due to the thin plastic profile exhaust mill. Extruded filaments are sent when this downward flow of air from an area rapid cooling to exhaust outside of the camp, where the threads are drawn and the vacuum. Elongated fibers continue to move through the isolated chamber 106, and after leaving it form a non-woven fabric 118 of the fibers in the ribbon 116. Webs of fibers plays the tape 116 for further processing. Air flows h the rez isolated chamber 120 and exiting, delayed in the recirculation chamber 120, where the threads end up going back into the pipes 114 and section 110 rapid cooling.

Merge signs of separation on temperature and independent of the output of many of the metered flow of molten flowable polymers inside the spinning beams in a closed system of the present invention facilitates the production of a wide diverse range of fibers and textiles, previously not available and not even planned in the traditional closed systems. For example, the provision of independent and substantially uniform temperature control in different streams of molten polymer in the spinning beam significantly increases the number of different combinations and ratios of polymers that can be obtained in a separate fibers during their formation. Smooth temperature profile of the die can be maintained in the system without forcing temperature changes in the flow of polymers, which is not very acceptable for electronography spinning beam type "hangers". Uniform temperature control provided by spinning beam of the present invention, which eliminates the possibility of thermal gradients during heating, is far superior to electromagnetisme spinning beam type "hangers"that is usually used is in the closed systems.

Independent control pressure fed different polymer components using separate groups of dosing pumps increases flexibility in the choice and distribution of polymers for any particular configuration of the machine by providing enhanced control over the uniformity of feed of the polymer along the length of the machine. The residence time can be adjusted more accurately by using the unit spinning beams and bushings kit of the present invention in comparison with the "coat hanger", which is especially important for sensitive polymers that require a shorter time. In particular, in the closed system of the present invention can be installed in a short time of stay, thereby reducing to a minimum the heat transfer between the flows of polymers and equipment for spinning beams and bushings kit.

Improved uniformity of extraction and removal of the external air flow and temperature deviations, which provides a closed system, further exacerbating the intensity of the work and increase the production of certain types of heat-sensitive fibers. In addition, due to the ease of holding the vapor in a closed system the latter facilitates the extrusion of some multicomponent fibers in the adjustable gas-vapor atmosphere with the purpose of chemical the handle formed by the spinning of threads. The unit spinning beams and spunbond kit are also characterized by high density spunbond holes and possible configurations of holes compared to the spinning beam type "hangers" (that produces a Spinneret only linear or narrow range of extruded filaments), which increases productivity and diversify the products of the polymer components produced in a single closed system. In addition, multi-dosing spinning beam in combination with the closed system of the present invention facilitates the production of high-value textiles, which include (not limited to) antistatic textiles, hygienic textile products, moisture-proof and wear-resistant textiles and textile products produced using different connection methods (different from the traditionally used thermocrete). Using a single closed system of the invention can also be produced continuously numerous textile products, such as varying the types and grouping of fibers, extrudable in the transverse direction of the system.

Some examples of polymer fibers which can be made according to the present invention, is illustrated in Fig.4-8. On Fig shown monofilament 202 type sheath/Serdtsev is on low shell molded in one-component or group homopolymer fibers 204 with the aim of introducing formed from fibers of high quality canvas high-value additives with low melt strength and is sensitive to the temperature and time of processing.

Figure 5 shows a group of three grouped according to the type of "side by side" fiber 302 is coated. These fibers exhibit the advantages of fiber type "side by side" and fibers coated in the same fabric formed from fibers using the system of the present invention. In the case of certain sensitive to rapid cooling of the polymer combination or combinations, where between the polymer components there is a discrepancy between the viscosity, spunbond complete system can be configured to produce a molded fiber with optimal orientation relative to the cooling air with the aim to minimize the negative effects associated with sharp bends or curvature extrudable from the die threads and, thus, to increase the density of the processing of holes and overall performance. On figa and - shows two different configurations of two-component fibers of type "side by side", where fiber 402, 502 of each configuration are oriented differently with respect to the double vozduhoohladitelnye system (UPRAVLENIE cooling air on figa and 6b shown by arrows). 7 shows another arrangement of fibers that can be produced using the system of the present invention, where a special dosing methods are used to obtain two-component fibers 602 type sheath/core, combined with one-component fibers 604. In yet another embodiment, the spinning beam or spunbond kit of the present invention can be made so with the help of a special threaded dispensing to give the exact dimensions of mixed fibres for the production of textile products with the required gradients of pore sizes. On Fig shows the arrangement of the fibers, which could produce such a textile product, which in the spinning process in a closed system fiber 702 larger diameter are combined with fibers 704 smaller diameter.

Other examples of fibers that can be formed using the system of the present invention are fiber-type sheath/core, in which the sheath is a thermoplastic material with a low melting point and the core material is a thermoplastic material with high strength characteristics. Non-woven fabrics made of these fibers can be associated thermally (for example, using calenders, susnow purge etc) at temperatures high enough to soften or melt the material of the outer shell, but low enough not to impair the strength characteristics of the core material. Such fibers may also have special properties inherent in the shell, such as softness to the touch, antimicrobial activity and resistance to gamma radiation. Can also be molded split fiber in which two or more separate polymer components extruded filaments are separated after the formation of the fabric, resulting in a canvas of the finer fibers. Alternatively, fiber type "side by side" can be molded so that after proper processing, they could spontaneously to sit down and gain volume. In the closed system of the present invention can also be molded mixed polymer fibers to impart useful properties to the end products made with these fibers.

From these examples it follows that the closed system of the present invention is extremely flexible operational and facilitates the production of a wide variety of combinations of fibers from a variety of polymeric components and textiles in a single system.

The present invention is not limited to the above specific options for the implementation of the population, in the framework of the invention assumes the existence of additional and modified processing methods. As noted above, the present invention is not limited to the configuration of the closed chamber 2, but, on the contrary, the closed system of the present invention may have any configuration of a closed space, which prevents impact on the extrudable thread in the process of forming fibers uncontrolled temperature and air flow.

Similarly, the Assembly of the spinning beam is not limited by the configuration of figure 3, but, on the contrary, the unit spinning beams can be designed in such a way that he could take, to thermally process and dispense any number of single incoming streams of liquid polymers. In other words, the unit spinning beams may include any desired number of entries for the incoming polymer connected with any desired number of distributing pipes in the distribution manifolds for independent heating and/or maintain various temperatures for any number of different streams of polymers. The unit spinning beams can also include any desired number of dosing pumps, and each pump has any suitable number of output streams for independent education in various streams of liquid polymer clay is s with variable volumetric velocity in the direction of draw kit. Along with this, each of the dosing pumps can be configured to send to draw the set of one or more streams of fluid polymer with a bulk velocity that does not depend on the volumetric flow rates, dosing any other dosing pump.

Spinning beam can be performed in any appropriate manner to facilitate the production of fibers and textiles with any desired cross-sectional geometries. In addition, in relation to fibers formed according to the present invention can be applied to any number or combination of methods of processing fibers, methods of formation of the yarn and method of the formation of woven and nonwoven textile materials.

After the description of the preferred embodiments of a new and improved system for the production of fibers and textile materials containing multiple polymer components, it is assumed that, taking into account stated in the application material, the experts in this field will suggest other modifications, variations and changes. It should be borne in mind that such variations, modifications and changes are assumed to be included in the scope of the invention limited by the attached claims. Although the application uses specific terminology, it is used only in a generic and descriptive sense and purposes without restrictions.

1. System for the production of nonwoven webs of fibers, comprising: a unit spinning beams configured for processing and filing multiple threads polymers for extrusion through the Spinneret holes, where the unit is spinning beams includes many feed passages connected in fluid with the holes in the Spinneret, where at least two feed passage configured to submit to the holes of the Spinneret separate streams of polymers with different polymer components;
where the unit is spinning beams includes many collectors to separate and independent maintain different temperatures for different streams of polymers with different polymer components, where each collector provides uniform heating of the polymer flow, the current inside the distributing pipes of polymer within each reservoir, surrounded by each distributing pipe heat exchange medium at essentially uniform temperature, the camera rapid cooling to receive and rapid cooling of the extruded filaments from the Spinneret holes, and the camera rapid cooling includes a source of gas supply for the gas flow on the extruded filaments;
exhaust chamber, a built-in camera rapid cooling and configured to receive and what atragene quickly cooled fibers;
and the molding surface for the reception of elongated filaments coming out of the exhaust chamber and forming a non-woven fibrous web on the forming surface;
while the system supports extrudable thread in the closed space between the Spinneret holes and the exhaust chamber to prevent contact of the filaments with uncontrolled gas flow.

2. The system according to claim 1, in which the Assembly of the spinning beam includes multiple dosing pumps, configured to independently apply to the holes of the Spinneret flows of polymers with different polymer components for various space velocities.

3. The system according to claim 1, configured to produce a variety of multicomponent fibers.

4. The system according to claim 1, configured to produce multiple-component fibers.

5. The system according to claim 1, configured to produce multiple-component fibers, of which at least one one-component fiber comprises a polymer component, which is different from the polymeric component of at least one other single-component fibers.

6. The method of forming the nonwoven fabric of fibers in the production of fibers, including Assembly of the spinning beam and the camera quickly what about the cooling, chamber connected with the exhaust chamber, and the system provides an isolated space between the unit spinning beams, camera quick cooling and exhaust chamber to prevent penetration in this isolated area of uncontrolled gas flow, the method includes:
(a) feeding a variety of polymer flows from the unit spinning beams to draw the holes, where at least two polymer stream contains different polymer components; where the unit is spinning beams includes many collectors to separate and independent maintain different temperatures for different streams of polymers with different polymer components, where each collector provides uniform heating of the polymer flow, the current inside the distributing pipes of polymer within each reservoir, surrounded by each distributing pipe heat exchange medium at essentially uniform temperature,
(b) extruding a variety of polymer flows through the draw hole, resulting in getting plenty of threads;
(c) rapid cooling of the extruded filaments by introducing threads into contact with the gas flow in the chamber rapid cooling;
(d) stretching the cooled filaments in the exhaust chamber; and
(e) laying of extruded filaments on the forming surface with the aim of molding by non-woven cloth is on the fibrous web on the forming surface.

7. The method according to claim 6, in which stage (a) includes:
(A.1) the separation of flows of polymers containing different polymer components, several collectors; and
(A.2) maintaining independent streams of polymers in each of the manifold at different temperatures.

8. The method according to claim 6, in which stage (a) includes:
(A.1) submission-separated polymer flows with variable volumetric velocity to draw the holes.

9. The method according to claim 6, further including:
(f) the formation of multiple multicomponent fibers.

10. The method according to claim 6, further including:
(f) the formation of multiple-component fibers.

11. The method according to claim 6, further including:
(f) the formation of multiple-component fibers, where at least one one-component fiber comprises a polymer component, which is different from the polymeric component of at least one other single-component fibers.



 

Same patents:

FIELD: technological processes.

SUBSTANCE: item moulded from resin and/or elastomer with spring structure is arranged in the form of three-dimensional structure. Item includes cavities and having specified volume density, at the same time three-dimensional structure is produced by means of contact, weave and engagement of neighboring fibres from randomly located loops or spirals from continuous, solid and/or hollow fibres made of thermoplastic resin and/or thermoplastic elastomer so that produced structure has a layerwise structure. At that volume density of surface layers located on opposite longitudinal sides makes from 0.2 to 0.5 g/cm3, and volume density of internal layer installed between surface layers makes from 0.01 to 0.15 g/cm3.

EFFECT: efficiency of production and increased strength of three-dimensional structure.

10 cl, 25 dwg

FIELD: process engineering.

SUBSTANCE: invention relates to production of production of one- or multi-layer products in TFP-process from fibrous strands oriented along load direction. Proposed method comprises laying fibrous strands on bearing layer and fixing them by fixing thread to make fibrous workpiece. Note that aforesaid fixing thread and/or bearing layer is made from water soluble material, and fibrous workpiece features any required thickness of material. After TFP-process, one fibrous workpiece is placed into fixing device to fix fibrous workpiece strands. To remove at least one fixing thread and/or at least one bearing layer, water is forced through fixing device acting as a solvent. Note also that water is forced through a closed-loop circuit. After removal of fixing thread, workpiece is dried in fixing device. To produce final composite component, workpiece is impregnated by epoxy resin in fixing device in compliance with RTM-process.

EFFECT: ruling out negative effects brought about by fixing thread.

3 cl, 2 dwg

FIELD: textile; paper.

SUBSTANCE: invention relates to needle-punched fabric and method of its production, and can be used as a base for production of constructional, finishing and other similar materials. Needle-punched material contains nonwoven fabric made of synthetic fibres, reinforcing and binding filaments. Note, that reinforcing filaments are made of fibre glass and arranged along nonwoven fibre uniformly. Moreover, nonwoven fibre is made of two inner lengthway fibrous webs and two external cross fibrous webs clamped by needlepunching. Notably, that reinforcing filaments made of fibre glass are arranged uniformly between the layer of lengthway inner fibrous web and one cross fibrous web.

EFFECT: enhancement of nonwoven fabric uniformity, functional capabilities enhancement of needle-punched fabric and cost reduction.

12 cl, 3 dwg, 3 tbl

FIELD: chemistry.

SUBSTANCE: inventions relate to method of producing nanofibres from polymer solution by method of electrostatic fibre formation in electric field, created due to difference of potentials between charged electrode and opposite electrode and device for its realisation. According to method polymer solution is supplied into electric field for electrostatic fibre formation by surface of rotating charged electrode, part of whose surface is submerged into polymer solution. Simultaneously formed nanofibres under impact of electric field are displaced from rotating charged electrode to opposite electrode and then are laid on means for their laying. Nanofibres are formed on cylindrical or quadrangular, or polygonal prismatic surface of charged electrode, and opposite electrode is placed opposite free part of charged electrode, air being sucked from space between charged electrode and opposite electrode. Device for method realisation contains rotating charged electrode and opposite electrode. Charged electrode represents cylinder or quadrangular or polygonal prism, and opposite electrode is placed opposite free part of charged electrode. Polymer solution for electrostatic fibre formation by surface of rotating charged electrode is supplied into created by electrodes electric field, simultaneously formed nanofibres under impact of electric field are displaced from rotating charged electrode to opposite electrode and then are directed to means of their laying, which represents air-permeable transporter. Means for laying nanofibres can be formed by flat carrying material of nanofibres.

EFFECT: increase of productivity of nanofibres production.

14 cl, 9 dwg

FIELD: textile; paper.

SUBSTANCE: filament fibers are produced. At the very least, part of them have a natural crimp, furthermore, filament fibers are laid out in warehouse storage for the transporting device creating a reserve. Furthermore, the filament fibers by means of the transporting device are relocated at the direction of the strengthening device. Furthermore, a gas current runs along the filament fibers in the direction of the transport for the reserve of filament fibers, along the surface of the reserve filament fibers.

EFFECT: even or homogenous structure.

13 cl, 4 dwg

FIELD: textile, paper.

SUBSTANCE: invention relates to technology of nonwoven material manufacturing and can serve as basis for production of construction, decoration and other similar materials. Nonwoven needled material which contains nonwoven linen from synthetic fibres, strengthening threads and binding material, strengthening threads being made from glass fibre and evenly located along nonwoven linen. Nonwoven linen is made from not less than five-seven webs, laid along and across nonwoven linen, strengthening glass fibre threads are laid on material lining surface and are fixed with linen fibres as a result of nonwoven linen needling.

EFFECT: increase of strength and extension of functional possibilities of nonwoven needled material.

3 cl, 2 tbl, 2 dwg

FIELD: technological processes.

SUBSTANCE: fibrous mat contains at least two substantially longitudinal and parallel arrays of fiber. At that arrays are connected with the help of retaining facilities, which embrace every array at an angle so that retaining facilities affect every array, which is substantially symmetrical relative to axis located in longitudinal direction between arrays.

EFFECT: improved strength properties of finished laminated material.

28 cl, 13 dwg

FIELD: chemistry.

SUBSTANCE: filter is made of nonwoven fabric and/or injected filter structures or sheets, i.e. produced after processing the synthetic artificial fibres. At first fibres are processed with antibacterial compounds and sliced to monothreads. Natural, artificial, synthetic, metal fibres or their mixtures are used. Web and felt are formed from these threads. Required number of nonwoven fabric layers is connected, thereafter processed, sliced and rolled.

EFFECT: extended application of aforesaid filters, improved wetting and filtering ability ensured.

31 cl, 16 dwg, 11 ex

FIELD: textile.

SUBSTANCE: invention concerns fabric applied together with melting interconnection machine for obtaining, transporting and interconnection of panels to form non-woven fabric. Non-woven fabric device includes: nozzle for thread curtain generation, diffuser, which forms, extends and sprays fiber onto forming fabric, reduction device for thrown-down fiber forming a panel, article or structure. In addition, the said forming fabric can be applied together with melting machine and comprises woven fabric with flat threads lined across the stream of fabric machine or flat threads lined along the stream of fabric machine. These threads decrease the air volume in forming fabric and smooth the surface of forming fabric.

EFFECT: decreased air leak during interconnection; eliminated instable vibration of panel.

12 cl, 5 dwg

FIELD: technology of polymers.

SUBSTANCE: invention relates to technology for preparing fibers, in particular, polypropylene fibers from nonwoven materials from a melt. Fiber is made from propylene polymeric composition (A) showing the melt flow rate value MFR (1) 6-150 g/10 min. The composition is chosen from group comprising the following components: (i) crystalline propylene polymeric composition comprising at least 0.8 wt.-% of ethylene, melting point 155°C or above, xylene-soluble fraction at room temperature, less 10 wt.-%, and the ratio index of polymeric fraction collected at temperature 25-95°C, and xylene-soluble fraction at temperature above 4; and (ii) crystalline propylene polymeric fraction with a boiling point 153°C and above, the content of xylene-soluble fraction at room temperature less 10 wt.-%. Indicated composition comprises at least 0.64 wt.-% of ethylene and/or (C4-C10)-α-olefin structural unit and comprises the following components: (I) 20-80% of crystalline propylene polymer comprising up to 1.5 wt.-% of ethylene and/or (C4-C10)-α-olefin, and (II) 20-80% of crystalline propylene statistic copolymer chosen from group comprising the following components: (IIa) propylene copolymer with 0.8-10 wt.-% of ethylene and/or (IIb) propylene copolymer with 1.5-18 wt.-% of (C4-C10)-α-olefin. Indicated polymeric composition (A) is prepared by chemical degradation of the previous polymer composition (A) showing the melt flow rate values MFR (2) from 0.5 to 50 g/10 min under condition that the melt flow rate ratio MFR (2) = 1.5-60. Prepared fibers are designated for preparing nonwoven materials used as interweaving material and ornamented fabric.

EFFECT: improved preparing method, valuable properties of fibers.

10 cl, 11 tbl, 15 ex

FIELD: process engineering.

SUBSTANCE: proposed method comprises preparing spinning solution during production of polymer consisting only of aromatic polyamide, aromatic diamine, aromatic diatomic chloride and polymerisation solution fed into reactor (20), mixing them by mixer arranged inside reactor (20). Said mixer consists of rotor (3) driven by motor (2) and comprising multiple pins (3a); and stator (4) with multiple pins (4a). Note that rotor rpm is adjusted to vary from 10-fold to 100-fold rate of feed of aromatic diatomic chloride and aromatic diamine in polymerisation solution into reactor (20). Uniform and homogeneous polymerisation are effected over the entire space of polymerisation reactor (20) that results in reduction of deviances in polymerisation degree, since polymer monomers are mixed together to produce their good interaction directly after introducing them into reactor (20). Now the solution is forced through spinnerets.

EFFECT: higher strength of thread and higher modulus.

4 cl, 2 dwg, 1 tbl, 4 ex

FIELD: process engineering.

SUBSTANCE: film canvas is extruded from polymer melt, cooled and cut into multiple film belts. Prior to drawing, multiple film bands are separated into several groups, each group being separately subjected to drawing. For this drawing mechanism is used incorporating several drawing gadgets that allow separating film bands after dividing multiple film bands into groups.

EFFECT: higher production rate and efficiency.

25 cl, 4 dwg

FIELD: metallurgy.

SUBSTANCE: method of obtaining includes following stages: a) addition of 12 wt % and less of nano-tubes, described by subject ratio, at least, equal to 100, and diametre of cross section equal to 5 nm or less, to sulfuric acid at temperature, exceeding solidification temperature of sulfuric acid; b) reduction of temperature up to value, less than solidification temperature of sulfuric acid, and blending during the time period, enough for solidification of mixture; c) addition of poly-p-phenilic-terephthalamide (PPTA) to solid mixture; and d) heating up to temperature exceeding temperature of solidification, and blending of mixture with following spinning or watering, or forming of received mixture. Material in the form of complex fibre or filament contains at least 5 filaments and is described by ultimate tensile strength, at least equal to 1.5 GPa and modulus of elasticity at least equal to 50 GPa.

EFFECT: upgraded characteristics.

12 cl, 1 tbl

FIELD: textile, paper.

SUBSTANCE: method is provided for receiving of cellulose filament, consisting of ultrafine filaments and used at manufacturing of filter fabric for filtration of blood and its components against white blood cells. According to the method it is implemented extrusion of spinning solution, stretch extraction of nascent yarn, post reduction, washing, drying and acceptance of filament. Extrusion is implemented at effluence rate of spinning solution 14.1 ÷ 19.0 m/min and extrusion 7.4 ÷ 39.0 % with receiving of filament, consisting of ultrafine filaments of linear density less than 0.039 tex. Squeezed after washing filaments with zero twist are formed into total tow of linear density 5.5 ÷ 7.2 ktex, it is dried up to humidity 20 ÷ 50% and is accepted in the form of flat tape into receiver tank. In the implementation version squeezed after washing single parallel oriented with zero twist are dried up to humidity 6 ÷ 19 %, it is formed into total tow of linear density 5.5 ÷ 7.2 ktex, it is embossed and accepted in the form of three-dimensional tow. Washing of filaments is implemented by countercurrent in three stages by soften water.

EFFECT: obtaining filament of linear density less than 0,039 tex, which can be used for formation of filter fabric with high performance attributes, providing increased effectiveness of blood cleaning up to 99,7%, and absence of filament twist provides simplification of its processing at manufacturing of filter fabric.

4 cl, 3 ex, 1 tbl

FIELD: chemistry.

SUBSTANCE: inventions relate to method of producing nanofibres from polymer solution by method of electrostatic fibre formation in electric field, created due to difference of potentials between charged electrode and opposite electrode and device for its realisation. According to method polymer solution is supplied into electric field for electrostatic fibre formation by surface of rotating charged electrode, part of whose surface is submerged into polymer solution. Simultaneously formed nanofibres under impact of electric field are displaced from rotating charged electrode to opposite electrode and then are laid on means for their laying. Nanofibres are formed on cylindrical or quadrangular, or polygonal prismatic surface of charged electrode, and opposite electrode is placed opposite free part of charged electrode, air being sucked from space between charged electrode and opposite electrode. Device for method realisation contains rotating charged electrode and opposite electrode. Charged electrode represents cylinder or quadrangular or polygonal prism, and opposite electrode is placed opposite free part of charged electrode. Polymer solution for electrostatic fibre formation by surface of rotating charged electrode is supplied into created by electrodes electric field, simultaneously formed nanofibres under impact of electric field are displaced from rotating charged electrode to opposite electrode and then are directed to means of their laying, which represents air-permeable transporter. Means for laying nanofibres can be formed by flat carrying material of nanofibres.

EFFECT: increase of productivity of nanofibres production.

14 cl, 9 dwg

FIELD: physics.

SUBSTANCE: invention suggests single fibre with longitudinal orientation of grooves and fabric made of it. Two-component fabrics made of these single fibres with grooves with use of blanket grout or cable coating have improved adhesion of coating; they also can include conductive coating. Besides, two-component single fibres can include mechanism indicating wear and tear. Invention also describes grooves made in surface of single fibres. In comparison with round single fibres improved adhesion with coatings is advantage of single fibres with grooves. Besides, fabrics containing these single fibres with grooves have better air management properties. Single fibres with grooves can be contained in fabric as threads laid in machine direction, in cross direction and both in machine and cross directions.

EFFECT: less air penetration, this is attained without additional coating or filling by thread.

33 cl, 18 dwg

FIELD: machine building.

SUBSTANCE: invention is related to the field of synthetic materials production from thermoplastic substances and their mixtures, including high quality stocks of raw materials and different types of household and industrial wastes of thermoplastic materials, and may be used for production of sorbents that entrap oil and oil products from water. Device for production of fibre material comprises extruder, nozzle of melt supply with heating elements, fibre generator. Fibre generator is arranged in the form of nozzle, compressed air supply duct is tangentially fixed to its body. Fibre generator is equipped with mouthpiece, outlet opening of which is located in the same plane with outlet opening of fibre generator. Nozzle for melt supply is equipped with heating elements installed coaxially around nozzle and at the same distance from each other. Flat ribs or cylindrical rods installed in staggered order along nozzle perimeter at the same distance from each other are located inside the nozzle. In order to improve heat emission and mixing, helical rib may be installed inside the nozzle.

EFFECT: simplification of design and increase of device efficiency and reliability.

2 cl, 5 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to technology of synthesised fibres production, in particular, to manufacturing of the product similar to monofibre. The method involves exposure of the predecessor containing an assemblage of endless elementary polyolefine fibres to temperatures within the range of polyolefine melting temperature for a period of time sufficient for, at least, a partial melting of adjacent fibres. Simultaneously drawing of the predecessor is carried out up to extent of drawing equal to at least 2.8.

EFFECT: manufacturing of the product similar to monofibre which demonstrates improved drawability that makes it suitable for such a sphere of application,as, for example, fishing line.

6 cl,1 tbl, 3 ex

FIELD: mechanics.

SUBSTANCE: spinner reel mechanism incorporates a casing, a reel, a shaft, a driver gear wheel and nuts. The casing, reel and drive gear wheel are made in chemically resistant composite self-lubricating material with a polymer matrix. Note that the casing functions as a plain bearing and a packing in the shaft-casing friction pair. The reel is made from one blanket of the aforesaid material.

EFFECT: longer life, ruling out formation of corrosion products and negative effect on chemical fibers.

5 dwg

FIELD: textiles, paper.

SUBSTANCE: invention relates to the technology used in production of pack thread from polyethylene terephthalate. Liquid polyethylene terephthalate, possibly from used beverage bottles, is etxruded at between 250 and 300°C through a slit draw plate. The obtained layer is cut into strips and subjected to phased thermal treatment with stretching. The stretched layer is fibrillated and intertwined into a pack tread using well known methods. The obtained thread with density of 2200 tex, has a rapture strength of up to 100 kgf at 2.2 mm thickness, and long service life even in harsh winter conditions.

EFFECT: increased strength and service life of the polyethylene terephthalate pack thread.

3 cl, 2 tbl, 2 ex

FIELD: equipment for cooling of polymer molded threads.

SUBSTANCE: apparatus is adapted for cooling of threads delivered from spinnerets of spinneret set positioned in spinning shaft. After molding of threads from polymer melt, threads are drawn downward and wound. Cooling pipe connected to spinneret set is made perforated to form sieve for passage of cooling air from the outside into inside. Threads may be drawn through said cooling pipe. Cooling pipe 4 includes at least one pipe 7 perforated to form sieve and adapted for admission of cooling air. At least one adjustable closing ring 9 is arranged on inner or outer side of perforated sieve-like pipe 7 for preventing cooling air from discharge.

EFFECT: fast and effective coordination of cooling pipe with thread cooling conditions.

3 cl, 3 dwg

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