CN111979644A - Preparation method for forming strong electrostatic cloth by fusing plastic melt spinning with low-pressure water mist silk - Google Patents
Preparation method for forming strong electrostatic cloth by fusing plastic melt spinning with low-pressure water mist silk Download PDFInfo
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- CN111979644A CN111979644A CN202010908568.9A CN202010908568A CN111979644A CN 111979644 A CN111979644 A CN 111979644A CN 202010908568 A CN202010908568 A CN 202010908568A CN 111979644 A CN111979644 A CN 111979644A
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
- D04H1/728—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by electro-spinning
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/08—Melt spinning methods
- D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
- D01D5/0885—Cooling filaments, threads or the like, leaving the spinnerettes by means of a liquid
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
- Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Fiber Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention relates to the technical field of melt-blown fabric, in particular to a preparation method of strong electrostatic fabric formed by fusing plastic melt-blown yarns with low-pressure water mist yarns, which comprises the following steps: the method comprises the following steps: the melt spinning and the pure water stay filaments are simultaneously spun out, and then are rubbed to generate static electricity to be adhered and formed together; step two: conveying the formed melt-blown fabric into a first cavity, and removing moisture through air suction and dehumidification; step three: after air suction and dehumidification, the mixture is conveyed into a second chamber through a conveying belt, and baking and drying are carried out on the front side and the back side by baking equipment to achieve a drying effect; step four: then cooling by cooling system equipment; step five: and (4) carrying out strip winding on the cooled melt-blown fabric and then packaging. According to the invention, before the melt-blown yarns are formed into cloth, the melt-blown yarns are rubbed in a water yarn standing mode to generate static electricity, and then the static electricity is attached to the melt-blown yarns to form melt-blown cloth, and the melt-blown fibers are interwoven with water mist yarns, so that the melt-blown fibers are finer and smoother, the resistance is effectively reduced, the static electricity is fully charged, and the filtration grade of the melt-blown cloth FFP2 and FFP3 is reached.
Description
Technical Field
The invention relates to the technical field of melt-blown cloth, in particular to a preparation method for forming strong electrostatic cloth by fusing plastic melt-blown yarns with low-pressure water mist yarns.
Background
The melt-blown fabric is the most core material of the mask, the melt-blown fabric mainly takes polypropylene as a main raw material, and the fiber diameter can reach 1-5 microns. The superfine fiber with the unique capillary structure increases the number and the surface area of the fiber per unit area, so that the melt-blown fabric has good filtering property, shielding property, heat insulation property and oil absorption property. Can be used in the fields of air and liquid filtering materials, isolating materials, absorbing materials, mask materials, warm-keeping materials, oil absorbing materials, wiping cloth and the like.
In order to meet the market demand, the filtration efficiency of the melt-blown nonwoven fabric reaches the FFP2& FFP3 standard, so that the melt-blown nonwoven fabric meets the European Union EN149: 2001. The most basic conditions of the prior art are that raw materials, equipment and processes are refined, the difference between the test result and the industrial standard is large after pretreatment and loading test of the produced melt-blown fabric, and the problems basically exist: in a 95 flow (air pressure) test, the aerosol particle filtering rate is high, the respiratory resistance per unit area is very large, and the resistance does not meet the standard; conversely, the respiratory resistance is allowed to be within the standard range, but the aerosol particle filtration rate deviates, which is proportional to the density of the cloth, and the more dense the respiratory resistance, the better the filtration effect. In order to overcome such technical barriers, it is a conventional practice to add a production process: the water electret reduces the respiratory resistance, thereby promotes the absorption of static efficiency reinforcing aerosol particulate matter, and its technological characteristics are that production melts to indicate high, and the blowout is exquisite, and frivolous melt-blown cloth, then spray friction electrification through strong water pressure in the rewound water electret equipment again and carry out the electret, nevertheless will wet cloth dry and just need increase longer stoving track, increase coiling mechanism at last again, just can accomplish, its drawback has the following several: 1, the process is long, the working procedure is complicated, and the daily yield is low; 2, the equipment is large in size, and the production area needs to be enlarged; 3, because an additionally added process is adopted, a large amount of water and electric quantity are needed for water washing treatment matched with equipment, and therefore, the energy consumption is high; 4, for the equipment with high input, low output and large energy consumption, the input cost of operators is high, so that the melt-blown fabric selling price of the FFP3 is high, the application of the FFP3 is limited, and the price of the mask made of the FFP3 is expensive. In summary, a preparation method with low investment cost, low energy consumption and high output efficiency is needed for the melt-blown fabric of FFP 3.
Disclosure of Invention
The invention aims to provide a preparation method for forming strong electrostatic cloth by fusing plastic melt spinning yarns with low-pressure water mist yarns.
In order to achieve the purpose, the invention adopts the following technical scheme:
the preparation method for forming the strong electrostatic cloth by fusing the plastic melt spinning yarns with the low-pressure water mist yarns comprises the following steps of:
the method comprises the following steps: the melt spinning and the pure water stay spinning are simultaneously spun out, and then are rubbed to generate static electricity to be adhered and formed together
Heating and pressurizing high-melt-index polypropylene into a molten state through a screw extruder, enabling the high-melt-index polypropylene to reach a spinneret orifice at the front end of a die head of a die through a melt diversion pipeline, drawing the high-melt-index polypropylene from micropores, meanwhile, arranging water-jet electrostatic shock devices symmetrically on the upper part, the lower part and the left and right parts of a melt-blowing die, and ejecting water-jet filaments through an atomizing device, wherein the fine water-jet filaments and plastic fiber filaments move at subsonic speed and are rubbed after being contacted to generate uniform and dense static electricity and surround the inside of small molecules of melt-blown fibers; the low-pressure water mist enables the shape (cylinder) of the fiber to fall into the flat net adsorption belt from the moment of spraying, the force of the mist enables the fiber to be buffered and not to change, the arrangement is uniform and regular, the fiber is prevented from being pulled to be broken into a plastic film, the breathing resistance is reduced, meanwhile, a large amount of water mist cools the action of melt spinning, the softness of the fabric is increased, the fiber is uniformly paved on a flat net adsorption conveying device (belt), the fiber is bonded into a net by utilizing the self waste heat, at the moment, the flat net adsorption conveying device (belt) performs subsonic injection at the moment of fiber forming, saturated static electricity generated by friction of the fiber is uniformly stored in each bundle of fiber of melt spinning fabric, and the primary forming operation is completed;
step two: the formed melt-blown fabric is conveyed into a first chamber and subjected to moisture removal through air suction and dehumidification operation
The initial melt-blown fabric needs to be subjected to air suction operation through a powerful air suction mechanism, absorbed air is subjected to dehumidifying operation and is conveyed into the first cavity to be blown on the initial melt-blown fabric, and the operation of quickly sucking away moisture is achieved;
step three: after air suction and dehumidification, the mixture is conveyed into a second chamber through a conveying belt, and the front and the back of the mixture are conveyed, baked and dried by baking equipment to achieve the drying effect
The cloth is introduced into the air energy strengthening drying device through the front and back baking conveyor belts, and the device is provided with a multi-layer S back-and-forth circulating structure, so that the cloth can be turned for many times within a short distance to form a long stroke, and the volume of the drying device is reduced;
step four: the baked melt-blown fabric is cooled by cooling system equipment
The molten sprayed fabric enters an auxiliary circulating fan temperature control device along with the traction of a fabric guide roller, the moisture and the temperature of the molten sprayed fabric can be detected through a sensor, and then the molten sprayed fabric is guided into a cooling device to carry out cooling operation on the molten sprayed fabric;
step five: the cooled melt-blown fabric is subjected to slitting and rolling so as to be packaged
The cooled meltblown fabric is guided out through the conveying of the fabric guide roller, and is cut through a cutting machine, and the meltblown fabric after cutting is wound through a winding device, so that the meltblown fabric with superior quality can be obtained;
further, the device that sets up in step one includes low pressure atomizing device, low pressure atomizing device one end carries out the pipe connection with embedded water purification water tank, and the low pressure atomizing device other end carries out the pipe connection with the electrostatic shock device of water silk, the electrostatic shock device of water silk is equipped with 360 degrees nozzles of several, the distributing type of the electrostatic shock device of water silk is parallel with the flat screen of melt-blown equipment and adsorbs conveyer (area), and at spinneret both sides equidistance symmetric distribution, spraying cellosilk and water smoke silk go on simultaneously, and the flat screen adsorbs conveyer (area) and carries out 360 degrees water silks in the fibre shaping in the twinkling of an eye and hits subsonic speed and spray, makes its friction produce saturated static and evenly store in every bundle of fibre of melt-blown cloth inside.
Furthermore, in the third step, an air energy drying mode with low energy consumption is adopted, and S-shaped front and back sides are circularly dried, so that the conveying, baking and drying are stably realized.
Further, the baking steps in the third step are as follows:
1) the baking device dries the melt-blown fabric on the conveying device, and then the melt-blown fabric is turned over and turned over through the front and back turn-over conveying rollers and laid in the second chamber;
2) the baking device dries the front and back sides of the melt-blown fabric, then the melt-blown fabric is conveyed in a multi-time direction-changing mode through a plurality of front and back turn-over conveying rollers, and the baking device dries the melt-blown fabric with a long stroke;
3) guiding the dried melt-blown fabric into auxiliary baking equipment by a conveying device;
4) the auxiliary baking equipment is used for carrying out auxiliary drying on the melt-blown fabric, recording the moisture and the temperature on the melt-blown fabric, analyzing the moisture and the temperature of the melt-blown fabric reaching the cooling device, and calculating the efficiency and the time of subsequent cooling.
Further, the moisture and the temperature of the melt-blown fabric are detected by the four sensors in the step, the moisture and the temperature are stored, the moisture loss and the temperature reduction of the melt-blown fabric in the time period from the transmission to the cooling device are checked, the moisture and the temperature of the melt-blown fabric finally entering the cooling device are obtained, the heat loss and the moisture evaporation efficiency of the cooling device are calculated and extracted, the curve working mode of the cooling device is considered, the working time of the cooling device is designed and calculated, and the cooling efficiency is maximized.
Furthermore, the cutting size of the cutting machine in the fifth step can be adjusted, the size of the cut melt-blown fabric is adjusted according to the requirement, and the cut melt-blown fabric is packaged through a plastic packaging device after being rolled by the rolling device.
Furthermore, all be provided with automatic deviation correcting device on the fabric guide roller.
Furthermore, the preparation device comprises a main box body, the main box body is internally divided into a first chamber, a second chamber and a third chamber, a middle plate which is separated from the first chamber, the second chamber and the third chamber is provided with a gap for cloth to drill, two side walls of the main box body are provided with gaps for cloth to drill, one side of the main box body is fixedly provided with a die melt spinning device and a water standing device, a low-pressure spray electrostatic cooling and shaping mechanism is fixedly arranged between the die melt spinning device and the water standing device and the main box body, the inner walls of the main box body, which are close to the die melt spinning device and the water standing device, are provided with a powerful air suction device mechanism, a water suction device and a moisture suction device are arranged in the first chamber, the moisture suction device is provided with an air outlet part for guiding out water moisture, and energy air inlets of the water suction device are respectively arranged in the moisture suction device and the first chamber, the fixed low pressure circulating equipment device box that is equipped with in second cavity, evenly distributed has two rows of a plurality of positive and negative turn-over conveying gyro wheels in the low pressure circulating equipment device box, first cavity internal fixation is equipped with extra positive and negative turn-over conveying gyro wheel, the fixed a plurality of low pressure circulation heating device that is equipped with of second cavity upside, the fixed air-blast device machine that is equipped with a plurality of matching a plurality of low pressure circulation heating device of second cavity up end, be equipped with steam circulation air-out department on the second cavity lateral wall, the third cavity up end is equipped with into cold wind department, the fixed cooling case device that is equipped with in third cavity, be equipped with air-out department on the third cavity lateral wall.
The invention has the beneficial effects that:
1, change the drying method of traditional heating wire, adopt the air energy drying method of low energy consumption and carry out openly reverse side circulation stoving with S-shaped transmission, with product quality remain stable, shortened drying device' S volume simultaneously, practice thrift equipment cost.
2, off-line water electret is finished cloth and then water spraying technology is carried out, the plastic melt-blown filament of the invention is fused with low-pressure water jet mist to form electrostatic cloth production equipment and a preparation method (belt) to spray the water jet at the moment of fiber forming, so that water-cooling electrostatic friction of the plastic melt-blown filament generates saturated static electricity which is uniformly stored in each fiber bundle of the melt-blown cloth, and when the melt-blown cloth is formed, the static electricity of the melt-blown filament can be stored without dead angles of 360 degrees.
3, water is atomized by an atomizing device, fine water fog yarns and plastic fiber yarns move at subsonic speed and rub after contacting to generate uniform and dense static electricity, and the water fog yarns surround the inner part of the melt-blown fiber micromolecules. The water smoke can also let fibrous shape (cylinder) from the spun moment begin to fall into the plain net adsorption band when, the strength of fog lets it obtain the buffering also not change, arranges even rule, does not draw and splits into the plastic film, reduces to respiratory resistance and plays the key role, and a large amount of water smoke still has a function: the cooling melt spinning function is realized, and the cloth is soft, not brittle and not broken.
4, the charge of the water electret is enhanced, and the electrostatic reserve of the melt-blown fabric can be kept for a long time.
5, reduce the non-up to standard loss of melt-blown fabric, change the tradition and spout a technology, in spun fibre, the material receives the compression back, forms the stress point in the structure, has the resilience, can evenly absorb static, reduces the quantity of defective products.
6, the integrated melt-blown water electret equipment can effectively control the quality of the base fabric, prevent the fabric surface from being broken and ensure the shutdown to be stable.
7, the production cost and the maintenance cost are greatly reduced, and energy-saving and green production is realized.
And 8, one device is integrated, so that the intermediate coil changing process is omitted, and a waste water recovery device is omitted. .
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below.
FIG. 1 is a block diagram of the steps of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
In the figure:
1 low-pressure spraying electrostatic cooling and shaping mechanism, 2 powerful air suction device mechanism, 3 water suction device, 4 dehumidifying device, 5 air outlet, 6 air blower, 7 low-pressure circulating heating device, 8 cold air inlet, 9 cooling box device, 10 air outlet, 11 hot air circulating air outlet, 12 low-pressure circulating equipment device box body, 13 front and back turn-over conveying rollers, 14 additional front and back turn-over conveying rollers and 15 energy air inlet
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
Wherein the showings are for the purpose of illustration only and are shown by way of illustration only and not in actual form, and are not to be construed as limiting the present patent; to better illustrate the embodiments of the present invention, some components of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product.
The preparation method of the strong electrostatic cloth formed by fusing the plastic melt spinning yarns with the low-pressure water mist yarns uses a preparation device, and comprises the following steps:
the method comprises the following steps: the melt spinning and the pure water stay spinning are simultaneously spun out, and then are rubbed to generate static electricity to be adhered and formed together
Heating and pressurizing high-melt-index polypropylene into a molten state through a screw extruder, enabling the high-melt-index polypropylene to reach a spinneret orifice at the front end of a die head of a die through a melt diversion pipeline, drawing the high-melt-index polypropylene from micropores, meanwhile, arranging water-jet electrostatic shock devices symmetrically on the upper part, the lower part and the left and right parts of a melt-blowing die, and ejecting water-jet filaments through an atomizing device, wherein the fine water-jet filaments and plastic fiber filaments move at subsonic speed and are rubbed after being contacted to generate uniform and dense static electricity and surround the inside of small molecules of melt-blown fibers; the shape (cylinder) of the fiber is buffered and does not change from the moment of spraying to the moment when the water mist falls into the flat net adsorption belt, the water mist is uniformly and regularly arranged, the fiber is prevented from being pulled to be broken into a plastic film, the respiratory resistance is reduced, meanwhile, a large amount of water mist cools, melts and sprays the fiber to increase the softness, and is uniformly paved on the flat net adsorption conveying device (belt), the fiber is bonded into a net by utilizing the self waste heat, at the moment, the flat net adsorption conveying device (belt) performs subsonic spraying at the fiber forming moment, so that saturated static electricity generated by friction of the flat net adsorption conveying device (belt) is uniformly stored in each bundle of fiber of melt-sprayed cloth, and the primary forming operation is completed;
step two: the formed melt-blown fabric is conveyed into a first chamber and subjected to moisture removal through air suction and dehumidification operation
The initial melt-blown fabric needs to be subjected to air suction operation through a powerful air suction mechanism, absorbed air is subjected to dehumidifying operation and is conveyed into the first cavity to be blown on the initial melt-blown fabric, and the operation of quickly sucking away moisture is achieved;
step three: after air suction and dehumidification, the mixture is conveyed into a second chamber through a conveying belt, and the front and the back of the mixture are conveyed, baked and dried by baking equipment to achieve the drying effect
The cloth is introduced into the air energy strengthening drying device through the front and back baking conveyor belts, and the device is provided with a multi-layer S back-and-forth circulating structure, so that the cloth can be turned for many times within a short distance to form a long stroke, and the volume of the drying device is reduced;
step four: the baked melt-blown fabric is cooled by cooling system equipment
The molten sprayed fabric enters an auxiliary circulating fan temperature control device along with the traction of a fabric guide roller, the moisture and the temperature of the molten sprayed fabric can be detected through a sensor, and then the molten sprayed fabric is guided into a cooling device to carry out cooling operation on the molten sprayed fabric;
step five: the cooled melt-blown fabric is subjected to slitting and rolling so as to be packaged
The cooled melt-blown fabric is guided out through the conveying of the fabric guide roller, the melt-blown fabric is cut through the cutting machine, and the melt-blown fabric after cutting is rolled through the rolling device, so that the melt-blown fabric with superior quality can be obtained.
The device that sets up in step one includes low pressure atomizing device, low pressure atomizing device one end carries out the pipe connection with embedded water purification water tank, the low pressure atomizing device other end carries out the pipe connection with the electrostatic device of attacking of water silk, the electrostatic device of attacking of water silk is equipped with several 360 degrees nozzles, the distributing type of the electrostatic device of attacking of water silk is parallel with the flat screen of melt-blown equipment adsorbs conveyer (area), equidistance symmetric distribution in spinneret both sides, spout cellosilk and water fog silk and go on simultaneously, the flat screen adsorbs conveyer (area) and carries out 360 degrees water silks in the fibre shaping in the twinkling of an eye and hits subsonic speed and spray, make its friction produce saturated static and evenly store inside every bundle of fibre of melt-blown cloth.
Wherein, the air energy drying mode with low energy consumption is adopted in the third step, and the S-shaped front and back sides are circularly dried, thereby stably realizing the conveying, baking and drying.
Wherein, the baking steps in the third step are as follows:
1) the baking device dries the melt-blown fabric on the conveying device, and then the melt-blown fabric is turned over and turned over through the front and back turn-over conveying rollers and laid in the second chamber;
2) the baking device dries the front and back sides of the melt-blown fabric, then the melt-blown fabric is conveyed in a multi-time direction-changing mode through a plurality of front and back turn-over conveying rollers, and the baking device dries the melt-blown fabric with a long stroke;
3) guiding the dried melt-blown fabric into auxiliary baking equipment by a conveying device;
4) the auxiliary baking equipment is used for carrying out auxiliary drying on the melt-blown fabric, recording the moisture and the temperature on the melt-blown fabric, analyzing the moisture and the temperature of the melt-blown fabric reaching the cooling device, and calculating the efficiency and the time of subsequent cooling.
Wherein, the moisture and the temperature of four kinds of sensors of step detect the melt-blown fabric, and save moisture and temperature, the check melt-blown fabric is at moisture loss and temperature reduction in this section of time of transmission to cooling heat sink, reachs the melt-blown fabric moisture and the temperature that finally gets into cooling heat sink, calculate and draw cooling heat loss and the evaporation efficiency of moisture of cooling heat sink, and consider the curve working method who calculates cooling heat sink, the operating time of design calculation cooling heat sink, maximize cooling efficiency.
Wherein, the size of cutting the machine in step five can be adjusted, adjusts the back size of cutting of meltblown fabric according to the demand, packs through plastic envelope packing plant after the coiling of coiling mechanism, adapts to different market demands.
Wherein, all be provided with automatic deviation correcting device on the fabric guide roll, automatic carry on spacingly to melt-blown fabric, avoid appearing the skew.
Wherein, the preparation device comprises a main box body, the interior of the main box body is divided into a first chamber, a second chamber and a third chamber, a gap for drilling cloth is arranged on a middle plate which is separated from the first chamber, the second chamber and the third chamber, the two side walls of the main box body are both provided with the gap for drilling cloth, one side of the main box body is fixedly provided with a die melt spinning device and a water standing device, a low-pressure spray electrostatic cooling and shaping mechanism 1 is fixedly arranged between the die melt spinning device and the water standing device and the main box body, the inner wall of the main box body 1 which is close to the die melt spinning device and the water standing device is provided with a strong air suction device mechanism 2, the first chamber is internally provided with a water suction device 3 and a moisture suction device 4, the moisture suction device 4 is provided with an air outlet 5 for guiding out water moisture, an energy air inlet 15 of the water suction device 3 is respectively arranged in the moisture suction device 4 and the first chamber, the second chamber is internally fixedly provided, evenly distributed has two rows of a plurality of positive and negative turn-over conveying roller 13 in the low pressure circulating equipment device box 12, the internal fixation of first cavity is equipped with extra positive and negative turn-over conveying roller 14, the fixed a plurality of low pressure circulation heating device 7 that is equipped with of second cavity upside, the fixed air-blast device machine 6 that is equipped with a plurality of matching a plurality of low pressure circulation heating device 7 of second cavity up end, be equipped with steam circulation air-out department 11 on the lateral wall of second cavity, the third cavity up end is equipped with into cold wind department 8, the fixed cooling case device 9 that is equipped with in the third cavity, be equipped with air-out department 10 on the lateral wall of third cavity.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (8)
1. The preparation method for forming the strong electrostatic cloth by fusing the plastic melt spinning yarns with the low-pressure water mist yarns is characterized in that a preparation device is used, and the preparation method comprises the following steps:
the method comprises the following steps: the melt spinning and the pure water stay spinning are simultaneously spun out, and then are rubbed to generate static electricity to be adhered and formed together
Heating and pressurizing high-melt-index polypropylene into a molten state through a screw extruder, enabling the high-melt-index polypropylene to reach a spinneret orifice at the front end of a die head of a die through a melt diversion pipeline, drawing the high-melt-index polypropylene from micropores, meanwhile, arranging water-jet electrostatic shock devices symmetrically on the upper part, the lower part and the left and right parts of a melt-blowing die, and ejecting water-jet filaments through an atomizing device, wherein the fine water-jet filaments and plastic fiber filaments move at subsonic speed and are rubbed after being contacted to generate uniform and dense static electricity and surround the inside of small molecules of melt-blown fibers; the low-pressure water mist enables the shape (cylinder) of the fiber to fall into the flat net adsorption belt from the moment of spraying, the force of the mist enables the fiber to be buffered and not to change, the arrangement is uniform and regular, the fiber is prevented from being pulled to be broken into a plastic film, the breathing resistance is reduced, meanwhile, a large amount of water mist cools the action of melt spinning, the softness of the fabric is increased, the fiber is uniformly paved on a flat net adsorption conveying device (belt), the fiber is bonded into a net by utilizing the self waste heat, at the moment, the flat net adsorption conveying device (belt) performs subsonic injection at the moment of fiber forming, saturated static electricity generated by friction of the fiber is uniformly stored in each bundle of fiber of melt spinning fabric, and the primary forming operation is completed;
step two: the formed melt-blown fabric is conveyed into a first chamber and subjected to moisture removal through air suction and dehumidification operation
The initial melt-blown fabric needs to be subjected to air suction operation through a powerful air suction mechanism, absorbed air is subjected to dehumidifying operation and is conveyed into the first cavity to be blown on the initial melt-blown fabric, and the operation of quickly sucking away moisture is achieved;
step three: after air suction and dehumidification, the mixture is conveyed into a second chamber through a conveying belt, and the front and the back of the mixture are conveyed, baked and dried by baking equipment to achieve the drying effect
The cloth is introduced into the air energy strengthening drying device through the front and back baking conveyor belts, and the device is provided with a multi-layer S back-and-forth circulating structure, so that the cloth can be turned for many times within a short distance to form a long stroke, and the volume of the drying device is reduced;
step four: the baked melt-blown fabric is cooled by cooling system equipment
The molten sprayed fabric enters an auxiliary circulating fan temperature control device along with the traction of a fabric guide roller, the moisture and the temperature of the molten sprayed fabric can be detected through a sensor, and then the molten sprayed fabric is guided into a cooling device to carry out cooling operation on the molten sprayed fabric;
step five: the cooled melt-blown fabric is subjected to slitting and rolling so as to be packaged
The cooled melt-blown fabric is guided out through the conveying of the fabric guide roller, the melt-blown fabric is cut through the cutting machine, and the melt-blown fabric after cutting is rolled through the rolling device, so that the melt-blown fabric with superior quality can be obtained.
2. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist silk according to claim 1, wherein the device arranged in the first step comprises a low-pressure atomizing device, one end of the low-pressure atomizing device is connected with an embedded water purification water tank through a pipeline, the other end of the low-pressure atomizing device is connected with a water silk electrostatic impact device through a pipeline, the water silk electrostatic impact device is provided with a plurality of 360-degree nozzles, the distribution of the water silk electrostatic impact device is parallel to a flat net adsorption conveying device (belt) of the melt-blowing equipment and is symmetrically distributed on two sides of a spinneret plate at equal intervals, fiber silk spraying and water mist silk spraying are carried out simultaneously, and the flat net adsorption conveying device (belt) carries out 360-degree water silk impact subsonic speed spraying at the moment of fiber forming, so that saturated static generated by friction of the flat net adsorption conveying device is uniformly stored in.
3. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist silk according to the claim 1, wherein the drying method by air energy with low energy consumption is adopted in the third step, and the S-shaped front surface and the back surface are circularly dried, so that the conveying, baking and drying are stably realized.
4. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist silk according to the claim 3, wherein the baking step in the third step is as follows:
1) the baking device dries the melt-blown fabric on the conveying device, and then the melt-blown fabric is turned over and turned over through the front and back turn-over conveying rollers and laid in the second chamber;
2) the baking device dries the front and back sides of the melt-blown fabric, then the melt-blown fabric is conveyed in a multi-time direction-changing mode through a plurality of front and back turn-over conveying rollers, and the baking device dries the melt-blown fabric with a long stroke;
3) guiding the dried melt-blown fabric into auxiliary baking equipment by a conveying device;
4) the auxiliary baking equipment is used for carrying out auxiliary drying on the melt-blown fabric, recording the moisture and the temperature on the melt-blown fabric, analyzing the moisture and the temperature of the melt-blown fabric reaching the cooling device, and calculating the efficiency and the time of subsequent cooling.
5. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning yarns and the low-pressure water mist yarns according to claim 1, wherein the four sensors in the step detect the moisture and the temperature of the melt-blown cloth, store the moisture and the temperature, verify the moisture loss and the temperature reduction of the melt-blown cloth in the period of time of transferring the melt-blown cloth to the cooling and cooling device, obtain the moisture and the temperature of the melt-blown cloth finally entering the cooling and cooling device, calculate and extract the heat loss and the moisture evaporation efficiency of the cooling and cooling device, design and calculate the working time of the cooling and cooling device by considering the curve working mode of the cooling and cooling device, and maximize the cooling efficiency.
6. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist yarns according to claim 1, wherein in the fifth step, the cutting size of the cutting machine can be adjusted, the cut size of the melt spinning cloth can be adjusted according to requirements, and the melt spinning cloth is packaged by a plastic packaging device after being wound by a winding device.
7. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist silk according to claim 1, wherein the cloth guide rollers are provided with automatic deviation rectifying devices.
8. The method for preparing the strong electrostatic cloth by fusing the plastic melt spinning and the low-pressure water mist silk according to the claim 1, characterized in that the preparation device comprises a main box body, the main box body is divided into a first chamber, a second chamber and a third chamber, the middle plate of the first chamber, the second chamber and the third chamber which are separated is provided with a gap for the cloth to drill, the two side walls of the main box body are provided with the gap for the cloth to drill, one side of the main box body is fixedly provided with a die melt spinning device and a water standing device, a low-pressure spray electrostatic cooling and shaping mechanism (1) is fixedly arranged between the die melt spinning device and the water standing device and the main box body, the inner walls of the main box body (1) close to the die melt spinning device and the water standing device are provided with a strong air suction device (2), the first chamber is internally provided with a water suction device (3) and a moisture extraction device (4), the dehumidifying device (4) is provided with an air outlet (5) for leading out water humidity, the energy air inlet (15) of the water pumping and absorbing device (3) is respectively arranged in the dehumidifying device (4) and the first cavity, the second cavity is internally and fixedly provided with a low-pressure circulating equipment device box body (12), two rows of a plurality of front and back turnover conveying rollers (13) are uniformly distributed in the low-pressure circulating equipment device box body (12), the first cavity is internally and fixedly provided with additional front and back turnover conveying rollers (14), the upper side of the second cavity is fixedly provided with a plurality of low-pressure circulating heating devices (7), the upper end face of the second cavity is fixedly provided with a plurality of air blowing devices (6) matched with the plurality of low-pressure circulating heating devices (7), the side wall of the second cavity is provided with a hot air circulating air outlet (11), and the upper end face of the third cavity is provided with a cold air inlet (8), and a cooling box device (9) is fixedly arranged in the third chamber, and an air outlet part (10) is arranged on the side wall of the third chamber.
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| CN112831915A (en) * | 2020-12-29 | 2021-05-25 | 重庆中纳科技有限公司 | Melt-blown water distribution electret system |
| CN113373542A (en) * | 2021-06-16 | 2021-09-10 | 深圳市瀚粤实业有限公司 | High-filtration-efficiency low-resistance melt-blown fabric with sterilization function and preparation method thereof |
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Application publication date: 20201124 |