CN112760825A - Single-layer melt-blown fabric production system with low resistance and high filtering effect and production method - Google Patents
Single-layer melt-blown fabric production system with low resistance and high filtering effect and production method Download PDFInfo
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- CN112760825A CN112760825A CN202011639364.6A CN202011639364A CN112760825A CN 112760825 A CN112760825 A CN 112760825A CN 202011639364 A CN202011639364 A CN 202011639364A CN 112760825 A CN112760825 A CN 112760825A
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- filaments
- spinneret
- spinning
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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
- D04H3/018—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the shape
-
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
-
- 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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses a single-layer melt-blown fabric production system with low resistance and high filtering effect and a preparation method thereof, the system comprises a mixer, a screw extruder, a screen changer, a metering pump, a spinning box, a spinning assembly, a screen former, a spraying system, a dryer, an electret device and a slitting winder which are sequentially arranged along the advancing direction of materials, the spinning assembly comprises a spinneret plate, a spinneret hole of the spinneret plate consists of a plurality of annular arc holes which are arranged at intervals along the circumferential direction, the circle center of the projection of the annular arc holes in the vertical direction is superposed with the circle center of the projection of the spinneret holes in the vertical direction, the spraying system is used for scattering hollow nascent filaments sprayed out from a single spinneret hole into filaments with the number corresponding to that of the annular arc holes of the spinneret hole, the non-woven fabric prepared by the preparation method based on the system is more uniform, the air flow resistance is lower, the filtering efficiency is higher, the hand feeling is further improved.
Description
Technical Field
The invention belongs to the technical field of non-woven fabric production, and particularly relates to a single-layer melt-blown fabric production system with low resistance and high filtering effect and a production method thereof.
Background
On the traditional production line, in the production process of the viscose non-woven fabric, a melt is sprayed out through a spinneret to form primary filaments, the primary filaments are cooled by cross air blow, enter a drafting device and are drafted into filaments through air flow, then the filaments are arranged into a net, and then the non-woven fabric with a certain filtering effect is formed after the primary filaments are sequentially dried and subjected to electret treatment.
Disclosure of Invention
In order to solve the problem, the invention provides a single-layer melt-blown fabric production system with low resistance and high filtering effect and a production method thereof.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: the single-layer melt-blown fabric production system comprises a mixer, a screw extruder, a screen changer, a metering pump, a spinning box, a spinning assembly, a screen former, a spraying system, a dryer, an electret device and a slitting and winding machine which are sequentially arranged along the advancing direction of materials, wherein the spinning assembly comprises a spinneret plate, a spinneret hole of the spinneret plate consists of a plurality of annular arc holes which are arranged at intervals around the circumferential direction, the circle center of the projection of the annular arc holes in the vertical direction is coincided with the circle center of the projection of the spinneret holes in the vertical direction, and the spraying system is used for scattering hollow primary filaments sprayed out from a single spinneret hole into filaments corresponding to the number of the annular arc holes of the spinneret hole.
Furthermore, the spinneret orifice is provided with 3 circular arc-shaped holes, so that the manufacturing process of the spinneret orifice is simplified on the premise of ensuring the strength of filaments.
Furthermore, the interval between two adjacent circular arc holes of the spinneret orifice at least enables the filaments sprayed from the two circular arc holes to be expanded and adhered, so that hollow primary filaments are formed, the filaments are conveniently arranged to form a net, and the uniformity is ensured.
The production method of the single-layer melt-blown fabric with low resistance and high filtering effect is carried out based on the single-layer melt-blown fabric production system with low resistance and high filtering effect, and comprises the following steps:
1) putting raw materials for non-woven fabric production into a mixer, and fully mixing to obtain a mixed material, wherein the content of the electret master batch is 2-5% (preferably 2.5%), and the balance is high molecular polymer for melt-blown fabric;
2) extruding the mixed material obtained in the step 1) by a screw extruder, filtering impurities and particles which are not melted by a screen changer, pumping the mixed material into a spinning box by a metering pump, spraying hollow primary filaments by a spinning assembly, wherein the filaments sprayed by two adjacent circular arc holes of the spinning hole are mutually adhered to form the hollow primary filaments at the outlet end of the spinning hole due to the bulking action, forming a net by arranging the hollow primary filaments at a net forming machine, then entering a spray forest system, scattering the hollow primary filaments into filaments with the quantity corresponding to the quantity of the circular arc holes of the spinning hole under the action of water flow in the spray system, and drying and electret to obtain the single-layer melt-blown cloth with low resistance and high filtering effect;
in the step 2), 11 temperature intervals are sequentially arranged from the screw to the extrusion die head of the screw extruder, and the temperature of the 11 temperature intervals presents an increasing trend at 185-250 ℃; the pumping flow rate of the metering pump is set to be 160 +/-3 kg/h, and the temperature of the spinning box is controlled to be 250-270 ℃.
Further, the filtered pressure of the screen changer is set to be 2.0 +/-0.2 MPa.
Furthermore, the thickness of the net formation is 0.25 +/-0.025 mm, and the diameter of the primary silk is 2 +/-0.3 mu m.
The invention selects the spinneret orifice with hollow hole shape, the spinneret orifice is composed of a plurality of annular arc-shaped holes which are arranged at intervals around the circumferential direction, meanwhile, a spraying device is additionally arranged between a net former and a dryer, the system is combined with the production method of the invention, melt is sprayed out through the annular arc-shaped holes of the spinneret plate to form filaments, adjacent filaments are extruded and bonded at the outlet of the annular arc-shaped holes to form hollow primary filaments, the hollow primary filaments enter the spraying device after being drawn and arranged into nets, the bonding parts are scattered by water flow to form fine filaments, and then the non-woven fabric formed after being dried and electret in sequence is more uniform, the air flow resistance is lower, the filtration efficiency is higher, and the hand feeling is further improved.
Drawings
Fig. 1 is a schematic structural diagram of a single-layer meltblown manufacturing system with low resistivity and high filtering effect according to an embodiment of the present invention.
FIG. 2 is a schematic diagram of the orifice configuration of a melt blowing plate in an embodiment of the present invention.
The reference numbers in the figures are:
1. the spinning machine comprises a mixer, 2 a screw extruder, 3 a screen changer, 4 a metering pump, 5 a spinning box, 6 a spinning assembly, 601 a circular arc-shaped hole, 7 a screen forming machine, 8 a spraying system, 9 a dryer, 10 electret equipment and 11 a slitting and winding machine.
Detailed Description
The invention is described in more detail below with reference to the following examples:
as shown in fig. 1 and 2, a single-layer melt-blown fabric production system with low resistance and high filtering effect comprises a mixer 1, a screw extruder 2, a screen changer 3, a metering pump 4, a spinning box 5, a spinneret assembly 6, a screen former 7, a spraying system 8, a dryer 9, an electret device 10 and a slitting and winding machine 11 which are sequentially arranged along the material advancing direction, wherein the spinneret assembly 6 comprises a spinneret plate, the spinneret hole of the spinneret plate is composed of a plurality of annular arc-shaped holes 601 which are arranged at intervals around the circumferential direction, the circle center of the projection of the annular arc-shaped holes 601 in the vertical direction coincides with the circle center of the projection of the spinneret hole in the vertical direction, and the spraying system 8 is used for scattering hollow nascent filaments which are sprayed out from a single spinneret hole into filaments with the number corresponding to the number of the annular arc-shaped holes 601 of the spinneret hole.
Referring to fig. 2, the spinneret orifice of this embodiment is provided with 3 circular arc holes 601, so as to simplify the manufacturing process of the spinneret orifice on the premise of ensuring the strength of the filaments. The interval between two adjacent circular arc holes 601 of the spinneret orifice at least enables the filaments sprayed from the two circular arc holes 601 to be bulked and adhered, so that hollow primary filaments are formed, the filaments are conveniently arranged to form a net, and the uniformity is ensured.
The production method of the single-layer melt-blown fabric with low resistance and high filtering effect is carried out based on the single-layer melt-blown fabric production system with low resistance and high filtering effect, and comprises the following steps:
1) putting raw materials for non-woven fabric production into a mixer 1, and fully mixing to obtain a mixed material, wherein the content of the electret master batch is 2.5%, and the balance is high molecular polymer for melt-blown fabric, which is produced by Qingdao Dongye plastics Co., Ltd, and has the model of 1500 DY;
2) extruding the mixed material obtained in the step 1) by a screw extruder 2, filtering impurities and particles which are not melted by a screen changer 3, pumping the mixed material into a spinning box 5 by a metering pump 4, spraying hollow primary filaments by a spinning component 6, wherein the filaments sprayed by two adjacent circular arc holes 601 of the spinning hole are mutually bonded to form the hollow primary filaments at the outlet end of the spinning hole due to the bulking action, arranging the hollow primary filaments at a screen former 7 to form a screen, then entering a spraying forest system, scattering the hollow primary filaments into filaments with the number corresponding to the number of the circular arc holes 601 of the spinning hole under the action of water flow in a spraying system 8, and drying and standing to obtain the single-layer melt-blown fabric with low resistance and high filtering effect;
in the step 2), 11 temperature intervals are sequentially arranged from the screw to the extrusion die head of the screw extruder 2, and the temperature of the 11 temperature intervals presents an increasing trend at 185-250 ℃; the pumping flow of the metering pump 4 is set to be 160kg/h, the temperature of the spinning box 5 is controlled to be 250-270 ℃, the filtered pressure of the screen changer 3 is set to be 2.0MPa, the thickness of a formed web is about 25mm, and the diameter of a nascent fiber is about 2 mu m.
The single-layer melt-blown fabric production system with low resistance and high filtering effect of the embodiment is characterized in that a spinneret orifice is formed by three circular arc-shaped holes 601 arranged at intervals around the circumferential direction, and a spraying device is additionally arranged between a web former 7 and a dryer 9, in combination with the production method of the embodiment, a melt is sprayed out to form filaments through the circular arc-shaped holes 601 of a spinneret plate, adjacent filaments are adhered at the outlet of the circular arc-shaped holes 601 due to expansion, and then hollow nascent filaments are formed, the hollow nascent filaments are sequentially drawn and laid into a web and then enter the spraying device, the adhesion part is broken by water flow to form thinner nascent filaments, and then non-woven fabrics formed after being sequentially dried and electret are more uniform, the air flow resistance is lower, the filtering efficiency is higher, and the hand feeling is further improved. The single-layer meltblown fabric with low resistance and high filtering effect prepared by the embodiment has the filtering property of more than 95 percent and the respiratory resistance of less than 30 percent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and their concepts should be equivalent or changed within the technical scope of the present invention.
The present invention is not limited to the above embodiments, and those skilled in the art can implement the present invention in other embodiments according to the disclosure of the present invention, or make simple changes or modifications on the design structure and idea of the present invention, and fall into the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
Claims (6)
1. The utility model provides a single-deck melt-blown fabric production system of high filter effect of low resistivity which characterized in that: the spinning device comprises a mixer (1), a screw extruder (2), a screen changer (3), a metering pump (4), a spinning box (5), a spinning pack (6), a screen forming machine (7), a spraying system (8), a dryer (9), an electret device (10) and a slitting and winding machine (11) which are sequentially arranged along the advancing direction of materials, wherein the spinning pack (6) comprises a spinneret plate, the spinneret hole of the spinneret plate is composed of a plurality of annular arc holes (601) which are arranged at intervals around the circumferential direction, the circle center of the projection of the annular arc holes (601) in the vertical direction coincides with the circle center of the projection of the spinneret hole in the vertical direction, and the spraying system (8) is used for scattering hollow nascent filaments sprayed out from a single spinneret hole into filaments corresponding to the number of the annular arc holes (601) of the spinneret hole.
2. The low drag, high filtration efficiency, single layer meltblown manufacturing system of claim 1, wherein: the spinneret orifice is provided with 3 annular arc-shaped holes (601).
3. The low drag, high filtration efficiency, single layer meltblown manufacturing system of claim 1, wherein: the interval between two adjacent circular arc holes (601) of the spinneret orifice at least enables the filaments sprayed from the two circular arc holes (601) to be bulked and adhered.
4. A production method of single-layer melt-blown cloth with low resistance and high filtering effect is characterized by comprising the following steps: the production process is carried out based on the low-resistance high-filtering-effect single-layer melt-blown fabric production system according to any one of claims 1 to 3, and comprises the following steps:
1) putting raw materials for non-woven fabric production into a mixer (1), and fully mixing to obtain a mixed material, wherein the content of the electret master batch is 2-5%, and the balance is a high-molecular polymer for melt-blown fabric;
2) extruding the mixed material obtained in the step 1) by a screw extruder (2), filtering impurities and unmelted particulate matters by a screen changer (3), pumping the mixed material into a spinning box (5) by a metering pump (4), spraying hollow primary filaments by a spinning assembly (6), sticking the filaments sprayed from two adjacent circular arc holes (601) of the spinning hole to form the hollow primary filaments at the outlet end of the spinning hole due to the puffing effect, arranging the hollow primary filaments at a screen forming machine (7) to form a screen, feeding the screen into a spray forest system, scattering the hollow primary filaments into filaments with the number corresponding to the number of the circular arc holes (601) of the spinning hole under the action of water flow in a spray system (8), and drying and standing to obtain the single-layer melt-spraying cloth with high filtering effect and low resistance;
in the step 2), 11 temperature intervals are sequentially arranged from the screw to the extrusion die head of the screw extruder (2), and the temperature of the 11 temperature intervals presents an increasing trend at 185-250 ℃; the pumping flow of the metering pump (4) is set to be 160 +/-3 kg/h, and the temperature of the spinning box (5) is controlled to be 250-270 ℃.
5. The method of claim 4 for producing a low resistivity, high filtration efficiency single layer meltblown fabric, wherein: the filtered pressure of the screen changer (3) is set to be 2.0 +/-0.2 MPa.
6. The method of claim 4 for producing a low resistivity, high filtration efficiency single layer meltblown fabric, wherein: the thickness of the formed net in the step 2) is 0.25 +/-0.025 mm, and the diameter of the primary wire is 2 +/-0.3 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639364.6A CN112760825A (en) | 2020-12-31 | 2020-12-31 | Single-layer melt-blown fabric production system with low resistance and high filtering effect and production method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011639364.6A CN112760825A (en) | 2020-12-31 | 2020-12-31 | Single-layer melt-blown fabric production system with low resistance and high filtering effect and production method |
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| Publication Number | Publication Date |
|---|---|
| CN112760825A true CN112760825A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011639364.6A Pending CN112760825A (en) | 2020-12-31 | 2020-12-31 | Single-layer melt-blown fabric production system with low resistance and high filtering effect and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113550070A (en) * | 2021-07-27 | 2021-10-26 | 杭州凯源过滤器材有限公司 | Melt-blown fabric forming device |
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| CN214362071U (en) * | 2020-12-31 | 2021-10-08 | 常州锦欣达纤维新材料有限公司 | Single-layer melt-blown fabric production system with low resistance and high filtering effect |
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| US5783503A (en) * | 1996-07-22 | 1998-07-21 | Fiberweb North America, Inc. | Meltspun multicomponent thermoplastic continuous filaments, products made therefrom, and methods therefor |
| JPH1112844A (en) * | 1997-06-18 | 1999-01-19 | Toray Ind Inc | Spinneret device for spinning core-sheath conjugated hollow fiber |
| JP2000017519A (en) * | 1998-04-30 | 2000-01-18 | Teijin Ltd | Multi-splittable hollow polyester yarn, woven and knitted fabric, artificial leather and nonwoven fabric using the yarn |
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| CN113550070A (en) * | 2021-07-27 | 2021-10-26 | 杭州凯源过滤器材有限公司 | Melt-blown fabric forming device |
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