CN112127050A - Double-channel melt-blowing cloth manufacturing device and application method - Google Patents
Double-channel melt-blowing cloth manufacturing device and application method Download PDFInfo
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- CN112127050A CN112127050A CN202010768881.7A CN202010768881A CN112127050A CN 112127050 A CN112127050 A CN 112127050A CN 202010768881 A CN202010768881 A CN 202010768881A CN 112127050 A CN112127050 A CN 112127050A
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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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/56—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 by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
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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
- D01D5/098—Melt spinning methods with simultaneous stretching
- D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
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- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
The invention provides a double-channel melt-blowing cloth manufacturing device, wherein a double-channel net forming system comprises a long net curtain for realizing fiber net forming, a first screw extruder is respectively communicated with a first feeding system and a first net changer, the first net changer is communicated with a first wire-drawing-level metering pump, the first wire-drawing-level metering pump is communicated with a first melt-blowing head, a first high-speed hot air system is communicated with the first melt-blowing head, the first melt-blowing head corresponds to the long net curtain, a second screw extruder is respectively communicated with a second feeding system and a second net changer, the net changer is communicated with a second wire-drawing-level metering pump, the second wire-drawing-level metering pump is communicated with a second melt-blowing head, the second high-speed hot air system is communicated with the second melt-blowing head, the second melt-blowing head corresponds to the long net curtain, and the second melt-blowing head is positioned on one side of the first melt-blowing head. The double-channel melt-blown fabric manufacturing device provided by the invention can meet the requirements of market customers on melt-blown fabrics of different materials.
Description
Technical Field
The invention relates to the field of textile fabric manufacturing, in particular to a double-channel melt-blowing fabric manufacturing device and an application method.
Background
The existing cloth making method adopts a single cloth making device to blow raw material polymers, and the raw material polymers are finally gathered on a net forming roller or a net forming curtain to form a fiber net, and finally the fiber net is reinforced through self-bonding to prepare the melt-blown fiber non-woven cloth. The existing cloth manufacturing method and device can only generate single-layer melt-blown cloth according to a polymer of one material every time, can not generate double-layer melt-blown cloth according to multiple materials, has poor performance stability of the whole melt-blown cloth, and can not meet the requirements of market customers on multi-material melt-blown cloth.
Disclosure of Invention
In order to overcome the defects of the prior art, one of the objectives of the present invention is to provide a dual-channel melt-blown fabric manufacturing apparatus, which can solve the problems that the existing fabric manufacturing method and apparatus can only generate a single-layer melt-blown fabric according to a polymer of one material, cannot generate a double-layer melt-blown fabric according to multiple materials, has poor performance stability of the whole melt-blown fabric, and cannot meet the requirements of market customers for multi-material melt-blown fabrics.
The invention also aims to provide a double-channel melt-blowing cloth manufacturing device, which can solve the problems that the existing cloth manufacturing method and device can only generate single-layer melt-blown cloth according to a polymer of one material at each time, can not generate double-layer melt-blown cloth according to multiple materials, has poor performance stability of the whole melt-blown cloth, and can not meet the requirements of market customers on multi-material melt-blown cloth.
One of the purposes of the invention is realized by adopting the following technical scheme:
the utility model provides a binary channels is meltblown and is made cloth device, includes first feeding system, second feeding system, first meltblown unit, second meltblown unit, first high-speed hot air system, the high-speed hot air system of second, binary channels netting system is including the long web curtain that is used for realizing fibre netting, first meltblown unit includes first screw extruder, first trade wire device, first wire drawing level measuring pump and first meltblown die head, first screw extruder respectively with first feeding system with first trade wire device intercommunication, first trade wire device with first wire drawing level measuring pump intercommunication, first wire drawing level measuring pump with first meltblown die head intercommunication, first high-speed hot air system with first meltblown die head intercommunication, first meltblown die head with the long web curtain corresponds, second meltblown includes second screw extruder, Second trade wire stitcher, second wire drawing level measuring pump and second melt and spout the die head, the second screw extruder respectively with the second feeding system with the second trade wire stitcher intercommunication, trade the wire stitcher with second wire drawing level measuring pump intercommunication, second wire drawing level measuring pump with the second melts the die head intercommunication, the high-speed hot air system of second with the second melts the die head intercommunication, the second melt and spout the die head with the long web curtain corresponds, the second melts the die head and is located first melt and spout die head one side.
Furthermore, the first high-speed hot air system and the second high-speed hot air system both comprise air blowers, air heaters and symmetrical hot air pipelines, the air blowers are respectively connected with the air heaters and the symmetrical hot air pipelines, the symmetrical hot air pipelines in the first high-speed hot air system are communicated with the first melt-blowing module, and the symmetrical hot air pipelines in the second high-speed hot air system are communicated with the second melt-blowing module.
Further, still include static and stay quick-witted system and rolling system of cutting, static stay quick-witted system with the system connection is cut in the rolling, static stays quick-witted system and is used for right the double-deck meltblown that forms on the fourdrinier curtain carries out electrostatic treatment, the system is cut in the rolling carries out on-line fixed width to the double-deck meltblown that passes through electrostatic treatment and cuts and the rolling finished product.
Further, still include first cold wind system and second cold wind system, the fourdrinier curtain is hollow structure, the middle part of fourdrinier curtain is provided with first inlet scoop and second inlet scoop, binary channels network system still includes first passageway, the second passageway that induced drafts, first passageway respectively with first inlet scoop with first cold wind system intercommunication, the second induced draft the passageway respectively with first inlet scoop with second cold wind system intercommunication.
The second purpose of the invention is realized by adopting the following technical scheme:
an application method of a double-channel melt-blown fabric manufacturing device is applied to the double-channel melt-blown fabric manufacturing device and comprises the following steps:
a first feeding treatment, namely injecting a first high molecular polymer into a first screw extruder through a first feeding system, and extruding the first high molecular polymer into a first solution by the first screw extruder for outputting;
the first spraying treatment is carried out, wherein a first solution sequentially passes through a first screen changer and a first wire drawing metering pump, and finally, a first melt-blowing probe generates and sprays first fibers;
generating a fiber web surface, wherein the first fiber is subjected to the drafting of the high-speed hot air flow output by the first high-speed hot air system and the cooling of the room-temperature air to form a first superfine fiber which flows onto the long web curtain to form the fiber web surface;
second feeding processing, namely injecting a second high molecular polymer into a second screw extruder through a second feeding system, and extruding the second high molecular polymer into a second solution by the second screw extruder for outputting;
second spraying treatment, wherein a second solution sequentially passes through a second screen changer and a second wire drawing metering pump, and finally a second fiber is generated by a second melt-blowing die and sprayed;
and generating double-layer melt-blown fabric, wherein the second fiber is subjected to the drafting of high-speed hot air flow output by a second high-speed hot air system and the cooling of room-temperature air to form second superfine fiber which flows onto the long net curtain to cover and bond the surface of the fiber net, and the double-layer melt-blown fabric is obtained.
Further, the method also comprises electrostatic treatment, and the electrostatic standing system is used for carrying out electrostatic treatment on the double-layer meltblown fabric.
And further, the method also comprises a slitting and rolling treatment, wherein the rolling and slitting system is used for carrying out online fixed-width slitting on the double-layer melt-blown fabric subjected to the electrostatic treatment and rolling a finished product.
Further, the first ejection process is specifically: the first screen changer receives and filters the first solution, the first wire drawing-level metering pump receives the first solution filtered by the first screen changer and outputs the filtered first solution to the first melt-blowing probe according to a preset first solution flow value, and the first melt-blowing probe receives the first solution and then ejects first fibers.
Further, the second ejection process is specifically: and the second wire drawing stage metering pump receives the second melt filtered by the second wire changer and outputs the filtered second melt to a second melt-blowing head according to a preset second melt flow value, and the second melt-blowing head receives the second melt and then sprays second fibers.
Compared with the prior art, the invention has the beneficial effects that: the utility model provides a two-channel melt-blown cloth manufacturing device, including first feeding system, second feeding system, first melt-blown unit, second melt-blown unit, first high-speed hot air system, second high-speed hot air system, two-channel netting system includes the long net curtain that is used for realizing the fibre netting, first melt-blown unit includes first screw extruder, first trade wire device, first wire drawing level measuring pump and first melt-blown die head, first screw extruder communicates with first feeding system and first trade wire device respectively, first trade wire device communicates with first wire drawing level measuring pump, first wire drawing level measuring pump communicates with first melt-blown die head, first high-speed hot air system communicates with first melt-blown die head, first melt-blown die head corresponds with the long net curtain, second melt-blown unit includes second screw extruder, second trade wire drawing device, second wire drawing level measuring pump and second melt-blown die head, the second screw extruder is respectively communicated with a second feeding system and a second screen changer, the screen changer is communicated with a second wire-drawing stage metering pump, the second wire-drawing stage metering pump is communicated with a second melt-blowing head, a second high-speed hot air system is communicated with the second melt-blowing head, the second melt-blowing head corresponds to the long net curtain, and the second melt-blowing head is positioned on one side of the first melt-blowing head. The first fibers and the second fibers generated by different materials are covered and bonded through the first melt-blowing module and the second melt-blowing module to obtain double-layer melt-blown fabric, the performance of the double-layer melt-blown fabric is more stable, and the requirements of market customers on the melt-blown fabric of different materials can be met.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings. The detailed description of the present invention is given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural view of a two-channel melt-blowing cloth making device according to the present invention;
fig. 2 is a schematic flow chart of an application method of a double-channel melt-blowing cloth making device of the invention.
In the drawings: 11. a first screw extruder; 12. a second screw extruder; 21. a first screen changer; 22. a second screen changer; 31. a first wire drawing stage metering pump; 32. a second wire drawing stage metering pump; 41. a first melt blowing die; 42. a second melt blowing die; 51. a first high-speed hot air system; 52. a second high-speed hot air system; 61. a first cold air system; 62. a second cold air system; 7. a two-channel net forming system; 71. a long net curtain; 72. a first air suction port; 73. a second air inlet; 74. a first air intake passage; 75. a second suction channel; 8. a first feeding system; 9. and a second feeding system.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
As shown in fig. 1, a two-channel melt-blown fabric making device in the present application includes a first feeding system 8, a second feeding system 9, a first melt-blowing unit, a second melt-blowing unit, a first high-speed hot air system 51, a second high-speed hot air system 52, and a two-channel web forming system 7, where the two-channel web forming system 7 includes a long curtain 71 for forming a web of fibers, the first melt-blowing unit includes a first screw extruder 11, a first screen changer 21, a first wire drawing stage metering pump 31, and a first melt-blowing die 41, the first screw extruder 11 is respectively communicated with the first feeding system 8 and the first screen changer 21, the first screen changer 21 is communicated with the first wire drawing stage metering pump 31, the first wire drawing stage metering pump 31 is communicated with the first melt-blowing die 41, the first high-speed hot air system 51 is communicated with the first melt-blowing die 41, the first melt-blowing die 41 is vertically corresponding to the long curtain 71, the second melt-blowing unit includes a second screw extruder 12, a second melt-blowing unit, a second high-blowing, The second screw extruder 12 is respectively communicated with the second feeding system 9 and the second screen changer 22, the screen changer is communicated with the second wire drawing stage metering pump 32, the second wire drawing stage metering pump 32 is communicated with the second melt-blowing die head 42, the second high-speed hot air system 52 is communicated with the second melt-blowing die head 42, the second melt-blowing die head 42 vertically corresponds to the long screen curtain 71, and the second melt-blowing die head is positioned on one side of the first melt-blowing die head 41.
Injecting a first high molecular polymer into a first screw extruder 11 through a first feeding system 8, outputting the first high molecular polymer as a first solution by the first screw extruder 11, receiving and filtering the first solution by a first screen changer 21, receiving the first solution by a first wire drawing stage metering pump 31, outputting the filtered first solution to a first melt-blowing probe 41 according to a preset first solution flow value, receiving the first solution by the first screen changer 21, spraying a first fiber by the first melt-blowing probe 41, forming the first fiber by the first fiber after being stretched by a high-speed hot air flow output by a first high-speed hot air system 51 and cooled by room-temperature air, flowing the first fiber onto a long screen curtain 71 to form a fiber screen surface, injecting an ultrafine second high molecular polymer into a second screw extruder 12 through a second feeding system 9, outputting the second high molecular polymer as a second solution by the second screw extruder 12, the second melt is received and filtered by the second web changer 22, the second wire-drawing-stage metering pump 32 receives the second melt filtered by the second web changer 22 and outputs the filtered second melt to the second melt-blowing head 42 according to a preset second melt flow value, the second melt-blowing head 42 receives the second melt and then sprays second fibers, the second fibers are subjected to drafting by the high-speed hot air flow output by the second high-speed hot air system 52 and cooling by room-temperature air to form second superfine fibers, and the second superfine fibers flow onto the long mesh 71 to cover and bond the fiber mesh surface, so that the double-layer melt-blown fabric is obtained. In FIG. 1, the symmetrical hot air ducts connecting the first high velocity hot air system 51 to the first melt blowing die 41 are shown by arcs for simplicity of the drawing, and the symmetrical hot air ducts connecting the second high velocity hot air system 52 to the second melt blowing die 42 are shown by arcs for simplicity of the drawing.
In this embodiment, the first high-speed hot air system 51 and the second high-speed hot air system 52 each include a blower, an air heater, and a symmetrical hot air duct, the blowers are respectively connected to the air heater and the symmetrical hot air duct, the symmetrical hot air duct in the first high-speed hot air system 51 is communicated with the first melt-blowing die 41, and the symmetrical hot air duct in the second high-speed hot air system 52 is communicated with the second melt-blowing die 42. Moreover in this application a binary channels is meltblown and is made cloth device still include static and reside in quick-witted system, rolling system of cutting, static is resided quick-witted system and is cut the headtotail with the rolling, and double-deck meltblown cloth gets into the rolling system of cutting after static is resided quick-witted system to static through static and is carried out electrostatic treatment, and the rolling system of cutting is to the double-deck meltblown cloth through static processing carry out on-line fixed width cut and rolling finished product. Still include first cold-blast system 61 and second cold-blast system 62, fourdrinier curtain 71 is hollow structure, the middle part of fourdrinier curtain 71 is provided with first inlet scoop 72 and second inlet scoop 73, two-channel netting system 7 still includes first inlet channel 74, the second channel 75 that induced drafts, first inlet channel 74 communicates with first inlet scoop 72 and first cold-blast system 61 respectively, the second channel 75 that induced drafts communicates with first inlet scoop 72 and second cold-blast system 62 respectively, first inlet scoop 72 is used for providing suction for first melt-blown feeler 41 spun first fibre, second inlet scoop 73 is used for providing suction for second melt-blown feeler 42 spun second fibre. The first feeding system 8 and the second feeding system 9 in this embodiment have the same structure and are both funnel-shaped.
As shown in fig. 2, the application method of the two-pass melt-blowing cloth manufacturing apparatus of the present application and the above-mentioned two-pass melt-blowing cloth manufacturing apparatus includes the following steps:
and (3) first feeding treatment, namely injecting the first high molecular polymer into a first screw extruder through a first feeding system, and extruding the first high molecular polymer into a first solution by the first screw extruder for outputting.
The first spraying treatment is carried out, wherein a first solution sequentially passes through a first screen changer and a first wire drawing metering pump, and finally, a first melt-blowing probe generates and sprays first fibers; the method specifically comprises the following steps: the first screen changer receives and filters the first solution, the first wire drawing-level metering pump receives the first solution filtered by the first screen changer and outputs the filtered first solution to the first melt-blowing probe according to a preset first solution flow value, and the first melt-blowing probe receives the first solution and then ejects first fibers.
And (3) generating a fiber web surface, wherein the first fibers are subjected to drafting of high-speed hot air flow output by the first high-speed hot air system and cooling of room-temperature air to form first superfine fibers and flow onto the long-web curtain to form the fiber web surface.
And (4) second feeding treatment, namely injecting a second high molecular polymer into a second screw extruder through a second feeding system, and extruding the second high molecular polymer into a second solution by the second screw extruder for outputting.
Second spraying treatment, wherein a second solution sequentially passes through a second screen changer and a second wire drawing metering pump, and finally a second fiber is generated by a second melt-blowing die and sprayed; the method specifically comprises the following steps: and the second wire drawing stage metering pump receives the second melt filtered by the second wire changer and outputs the filtered second melt to a second melt-blowing head according to a preset second melt flow value, and the second melt-blowing head receives the second melt and then sprays second fibers.
And generating double-layer melt-blown fabric, wherein the second fiber is subjected to the drafting of high-speed hot air flow output by a second high-speed hot air system and the cooling of room-temperature air to form second superfine fiber which flows onto the long net curtain to cover and bond the surface of the fiber net, and the double-layer melt-blown fabric is obtained.
In this embodiment, the method further includes an electrostatic treatment, and the electrostatic standing system performs the electrostatic treatment on the double-layer meltblown fabric. And (4) slitting and rolling treatment, wherein a rolling slitting system is used for performing online fixed-width slitting on the electrostatically treated double-layer melt-blown fabric and rolling a finished product.
The utility model provides a two-channel melt-blown cloth manufacturing device, including first feeding system, second feeding system, first melt-blown unit, second melt-blown unit, first high-speed hot air system, second high-speed hot air system, two-channel netting system includes the long net curtain that is used for realizing the fibre netting, first melt-blown unit includes first screw extruder, first trade wire device, first wire drawing level measuring pump and first melt-blown die head, first screw extruder communicates with first feeding system and first trade wire device respectively, first trade wire device communicates with first wire drawing level measuring pump, first wire drawing level measuring pump communicates with first melt-blown die head, first high-speed hot air system communicates with first melt-blown die head, first melt-blown die head corresponds with the long net curtain, second melt-blown unit includes second screw extruder, second trade wire drawing device, second wire drawing level measuring pump and second melt-blown die head, the second screw extruder is respectively communicated with a second feeding system and a second screen changer, the screen changer is communicated with a second wire-drawing stage metering pump, the second wire-drawing stage metering pump is communicated with a second melt-blowing head, a second high-speed hot air system is communicated with the second melt-blowing head, the second melt-blowing head corresponds to the long net curtain, and the second melt-blowing head is positioned on one side of the first melt-blowing head. The first fibers and the second fibers generated by different materials are covered and bonded through the first melt-blowing module and the second melt-blowing module to obtain double-layer melt-blown fabric, the performance of the double-layer melt-blown fabric is more stable, and the requirements of market customers on the melt-blown fabric of different materials can be met.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner; those skilled in the art can readily practice the invention as shown and described in the drawings and detailed description herein; however, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the scope of the invention as defined by the appended claims; meanwhile, any changes, modifications, and evolutions of the equivalent changes of the above embodiments according to the actual techniques of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (9)
1. A double-channel melt-blowing cloth manufacturing device is characterized in that: including first feeding system, second feeding system, first melt blown unit, second melt blown unit, first high-speed hot air system, the high-speed hot air system of second, binary channels netting system is including the long web curtain that is used for realizing fibre netting, first melt blown unit includes first screw extruder, first trade wire device, first wire drawing level measuring pump and first melt blown groover, first screw extruder respectively with first feeding system with first trade wire device intercommunication, first trade wire device with first wire drawing level measuring pump intercommunication, first wire drawing level measuring pump with first melt blown groover intercommunication, first high-speed hot air system with first melt blown groover intercommunication, first melt blown groover with the long web curtain corresponds, second melt blown unit includes second screw extruder, second trade wire device, Second wire drawing level measuring pump and second melt and spout the die head, the second screw extruder respectively with the second feeding system with the second trades the net ware intercommunication, trade the net ware with second wire drawing level measuring pump intercommunication, second wire drawing level measuring pump with the second melts and spouts the die head intercommunication, the high-speed hot air system of second with the second melts and spouts the die head intercommunication, the second melt and spout the die head with the long web curtain corresponds, the second melts and spouts the die head and is located first melt and spout die head one side.
2. The dual channel meltblown web forming apparatus of claim 1, wherein: the first high-speed hot air system and the second high-speed hot air system both comprise air blowers, air heaters and symmetrical hot air pipelines, the air blowers are respectively connected with the air heaters and the symmetrical hot air pipelines, the symmetrical hot air pipelines in the first high-speed hot air system are communicated with the first melt-blowing module, and the symmetrical hot air pipelines in the second high-speed hot air system are communicated with the second melt-blowing module.
3. The dual channel meltblown web forming apparatus of claim 1, wherein: still include static machine system and rolling system of cutting that stands, static machine system of standing with the system connection is cut in the rolling, static machine system of standing is used for right the double-deck meltblown that forms on the fourdrinier curtain carries out electrostatic treatment, the system is cut in the rolling carries out on line fixed width to the double-deck meltblown that passes through electrostatic treatment and cuts and the rolling finished product.
4. The dual channel meltblown web forming apparatus of claim 1, wherein: still include first cold wind system and second cold wind system, the fourdrinier curtain is hollow structure, the middle part of fourdrinier curtain is provided with first inlet scoop and second inlet scoop, binary channels network system still includes first passageway, the second channel that induced drafts, first passageway that induced drafts respectively with first inlet scoop with first cold wind system intercommunication, the second induced draft the passageway respectively with first inlet scoop with second cold wind system intercommunication.
5. A method for applying a double-channel melt-blown fabric production device, which is applied to the double-channel melt-blown fabric production device of any one of claims 1 to 4, characterized in that: the method comprises the following steps:
a first feeding treatment, namely injecting a first high molecular polymer into a first screw extruder through a first feeding system, and extruding the first high molecular polymer into a first solution by the first screw extruder for outputting;
the first spraying treatment is carried out, wherein a first solution sequentially passes through a first screen changer and a first wire drawing metering pump, and finally, a first melt-blowing probe generates and sprays first fibers;
generating a fiber web surface, wherein the first fiber is subjected to the drafting of the high-speed hot air flow output by the first high-speed hot air system and the cooling of the room-temperature air to form a first superfine fiber which flows onto the long web curtain to form the fiber web surface;
second feeding processing, namely injecting a second high molecular polymer into a second screw extruder through a second feeding system, and extruding the second high molecular polymer into a second solution by the second screw extruder for outputting;
second spraying treatment, wherein a second solution sequentially passes through a second screen changer and a second wire drawing metering pump, and finally a second fiber is generated by a second melt-blowing die and sprayed;
and generating double-layer melt-blown fabric, wherein the second fiber is subjected to the drafting of high-speed hot air flow output by a second high-speed hot air system and the cooling of room-temperature air to form second superfine fiber which flows onto the long net curtain to cover and bond the surface of the fiber net, and the double-layer melt-blown fabric is obtained.
6. The method of claim 5, wherein the apparatus further comprises: the method also comprises electrostatic treatment, wherein the electrostatic standing system is used for carrying out electrostatic treatment on the double-layer melt-blown fabric.
7. The method of claim 6, wherein the apparatus further comprises: the method further comprises a slitting and rolling treatment, and the rolling and slitting system is used for performing on-line fixed-width slitting and rolling on the electrostatically-treated double-layer meltblown fabric to obtain a finished product.
8. The method of claim 5, wherein the apparatus further comprises: the first ejection treatment specifically includes: the first screen changer receives and filters the first solution, the first wire drawing-level metering pump receives the first solution filtered by the first screen changer and outputs the filtered first solution to the first melt-blowing probe according to a preset first solution flow value, and the first melt-blowing probe receives the first solution and then ejects first fibers.
9. The method of claim 5, wherein the apparatus further comprises: the second ejection treatment specifically is: and the second wire drawing stage metering pump receives the second melt filtered by the second wire changer and outputs the filtered second melt to a second melt-blowing head according to a preset second melt flow value, and the second melt-blowing head receives the second melt and then sprays second fibers.
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