CN116219586A - Continuous production method of chopped fibers - Google Patents
Continuous production method of chopped fibers Download PDFInfo
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- CN116219586A CN116219586A CN202310105165.4A CN202310105165A CN116219586A CN 116219586 A CN116219586 A CN 116219586A CN 202310105165 A CN202310105165 A CN 202310105165A CN 116219586 A CN116219586 A CN 116219586A
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- 238000012216 screening Methods 0.000 claims abstract description 26
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- 229920001875 Ebonite Polymers 0.000 claims description 3
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- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
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- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000010923 batch production Methods 0.000 abstract description 2
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
- D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
- D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
The invention belongs to the technical field of fiber preparation, and discloses a continuous production method of chopped fibers, which comprises the steps of firstly merging at least two strands of fibers to form fiber multifilament, and winding to obtain a fiber drum after doubling; drawing the fiber barrels after doubling to obtain a plurality of fiber multifilaments, entering fiber warping equipment after passing through a wire guide hole and a wire guide grating, and drawing by a later feeding roller to obtain flattened fiber bundles; processing the fiber bundles by a fiber cutting machine under the action of a cutting feeding roller, and cutting the fiber bundles into target lengths to obtain chopped fibers; and sending the chopped fibers into a fiber screening device for vibration screening, and after passing through the fiber screening device, sending the chopped fibers into a fiber collecting device for collection. The method is used for preparing the chopped fibers with good dispersibility and uniform length, can realize stable and continuous batch production, and meets the processing requirements of various chopped fibers with various sizes.
Description
Technical Field
The invention belongs to the technical field of fiber preparation, relates to a chopped fiber, and in particular relates to a continuous production method of the chopped fiber.
Background
The chopped fiber refers to a fiber with the length of 1-15 mm and certain strength and toughness, and the varieties mainly used at present are polypropylene fiber, terylene, vinylon, viscose fiber, composite fiber and the like. Compared with the conventional fiber, the chopped fiber has the characteristics of higher breaking strength, lower elongation at break, low shrinkage in boiling water, high dispersibility in a medium, static resistance and the like due to lower length and linear density. As the properties of chopped fibers are increasingly known, their demand in the industry is expanding.
The wide application prospect of the chopped fiber promotes the hot trend of domestic chopped fiber development, but has the problem of poor length uniformity in the application process, and the length uniformity of the chopped fiber can influence the performance of subsequent products such as resin or papermaking pulp and the like and influence the application of downstream products of the chopped fiber. For example, patent application CN202210831974.9 describes a method for preparing polyimide chopped fibers, which uses a sizing agent to perform surface treatment on polyimide fibers, then processes the polyimide chopped fibers with uniform length through a chopping device, and finally removes the sizing agent through a water washing process to obtain the required polyimide chopped fibers. However, the polyimide fiber prepared by the method is softer after being subjected to surface treatment by the sizing agent, and the cut fiber is easy to be different in length. It is therefore particularly important to improve the length uniformity of the chopped fibers.
Disclosure of Invention
The invention aims to provide a continuous production method of chopped fibers, which solves the problem of poor length uniformity of the chopped fibers by linkage of links such as wire guiding, warping, feeding, cutting, screening and the like.
The technical scheme adopted by the invention for realizing the purposes is as follows:
a continuous production method of chopped fibers, comprising the steps of:
s1, merging at least two strands of fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the multifilament onto a fiber drum to obtain a fiber drum after doubling;
s2, drawing out a fiber multifilament from each fiber drum after doubling to obtain a plurality of fiber multifilament, entering fiber warping equipment for warping after passing through a yarn guide hole and a yarn guide grating to obtain a fiber surface matched with the feeding width of a fiber cutting machine, and drawing by a subsequent feeding roller to obtain a flattened fiber bundle;
s3, continuously processing the fiber bundles through a fiber cutting machine under the action of rotation traction of a cutting feed roller, and cutting the fiber bundles into target lengths to obtain chopped fibers;
s4, sending the chopped fibers into a fiber screening device for vibration screening, and after passing through the fiber screening device, entering a fiber collecting device below for collection.
In the limiting step S2, the diameter of the wire guide hole is 2-8 mm, and the gap of the wire guide grid is 2-5 mm.
As a second limitation, the specific procedure in step S3 is:
continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a flat fiber surface through the pressing block, and then feeding the fiber bundles into a cutting edge of the fiber cutting machine for processing, and cutting the fiber bundles into a target length to obtain chopped fibers.
As a further limitation, the cutting edge comprises a first cutter and a second cutter which are matched, the cutting edge of the second cutter is an inclined plane, and the inclination angle is 10-30 degrees;
after the fiber bundles are pressed into flat fiber surfaces by the pressing blocks, when the fiber bundles enter a cutting knife edge of a fiber cutting machine for processing, a first knife of the cutting knife edge is kept motionless, and a second knife moves reciprocally.
As still further defined, the distance that the cutting feed roller rotates and pulls the fiber bundle to move each time is consistent with the target length cut by the fiber bundle, and is 0.5-10 mm, and the reciprocating frequency of the second cutter of the cutting edge is consistent with the moving step frequency of the cutting feed roller.
As a further definition, the surface of the cutting feed roll is coated with EVA, polyurethane, polytetrafluoroethylene, or hard rubber.
As a third limitation, in step S4, the fiber screening device uses a metal mesh screen, where the mesh of the metal mesh screen is a square mesh, and the side length of the metal mesh screen is 1 to 2.5 times the target length of the chopped fibers.
Compared with the prior art, the technical proposal adopted by the invention has the following technical progress:
(1) The invention realizes stable and continuous batch production of the chopped fibers within 0.5-10 mm, the prepared chopped fibers have good dispersibility and uniform and stable length, the disposable qualification rate can reach more than 90 percent, and the processing requirements of various and multi-size chopped fibers can be met;
(2) According to the invention, through linkage of links such as a fiber drum hanging frame, a guide wire, warping, feeding, cutting, screening and the like, automatic production of chopped fibers is realized, manual operation is saved, and production cost is reduced;
(3) The number of monofilaments in the fiber multifilament is high, and EVA, polyurethane, polytetrafluoroethylene or hard rubber is coated on the surface of the cutting and feeding roller, so that the friction between the fibers and the cutting and feeding roller is increased, the slippage of the fibers is reduced, and the fibers are uniformly fed;
(4) According to the invention, the first cutter is kept still when the cutting edge is processed, and the second cutter edge is an inclined plane, so that a certain extrusion cutting effect can be ensured in the cutting process, and the fiber cutting is facilitated.
In conclusion, the chopped fibers prepared by the method have good dispersibility and uniform and stable length, can be made of PET, PP, PE, PA, PA66, PPS, PEEK and other fibers, and can be added as fillers in the fields of papermaking, dental restoration materials, building roads and bridges, simulation models and the like to improve the appearance and mechanical properties of products.
Drawings
FIG. 1 is a flow chart illustrating the preparation of an embodiment of the present invention;
FIG. 2 is a photograph showing a cut fiber object of example 1 of the present invention;
FIG. 3 is an optical micrograph showing the length of chopped fibers of example 1 of the present invention;
FIG. 4 is an optical micrograph showing the length of another chopped fiber according to example 1 of the present invention.
Detailed Description
The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.
Example 1A continuous Process for the production of chopped fibers
As shown in fig. 1, this embodiment is a continuous production method of chopped fibers, and uses a fiber doubling device, a fiber cylinder hanger, a fiber guide hole and a fiber guide grid, a fiber warping device, a subsequent feeding roller, a cutting feeding roller, a fiber cutter, a fiber screening device, and a fiber collecting device arranged below the fiber screening device, which are sequentially arranged along the fiber filament outlet direction.
The embodiment comprises the following steps:
s1, combining six strands of PET fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the fiber multifilament on a fiber drum to obtain a fiber drum after doubling; the number of monofilaments in the fiber multifilament obtained after the fiber is doubled is increased, so that the energy production of the fiber in a later cutting link is improved, the friction force between the fiber and a cutting feeding roller is increased, the slippage of the fiber is reduced, and the fiber is uniformly fed;
s2, hanging the fiber barrels obtained in the step S1 on a fiber barrel hanging frame, pulling one fiber multifilament from each fiber barrel after doubling to obtain a plurality of fiber multifilament, feeding the fiber multifilament into a fiber warping device for warping after passing through a wire guide hole with the diameter of 2mm and a wire guide grating with the gap of 3mm, obtaining a fiber surface matched with the feeding width of a fiber cutter after integrating the plurality of fiber multifilament, and carrying out traction extrusion through a later feeding roller to obtain a flattened fiber bundle;
s3, continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation traction of a cutting feeding roller, pressing the fiber bundles into a flat fiber surface through the pressing block, and then feeding the fiber bundles into a cutting edge of the fiber cutting machine for processing, and cutting the fiber bundles into a target length of 1mm to obtain chopped fibers;
in the step, the cutting and feeding roller consists of a first pressing roller and a second pressing roller, the gap can be adjusted according to the feeding amount of the fiber bundle, EVA is coated on the surfaces of the first pressing roller and the second pressing roller of the cutting and feeding roller, the friction force between the cutting and feeding roller and the fiber bundle can be increased, and the fiber bundle is pulled into a fiber cutting machine; the cutting edge comprises a first cutter and a second cutter which are matched with each other, the first cutter is kept motionless when the cutting edge is processed, the second cutter reciprocates, and the cutting edge of the second cutter is an inclined plane with an inclination angle of 30 degrees; the distance of the movement of the fiber bundle is pulled by each rotation of the cutting feed roller to be consistent with the target length of the fiber bundle cutting, the distance is 1mm, the movement frequency of the second cutter of the cutting edge is consistent with the movement step frequency of the cutting feed roller, and the second cutter of the cutting edge is linked with the cutting feed roller, so that the chopped fibers with the required target length can be obtained;
s4, sending the chopped fibers into a fiber screening device, carrying out vibration screening through a vibration motor, and after passing through the fiber screening device, entering a fiber collecting device below to collect the chopped fibers;
the fiber screening device adopts a metal mesh screen, the mesh of the metal mesh screen is square, the side length of the metal mesh screen is 1 time of the target length of the chopped fibers in the step S3, vibration screening is carried out through a vibration motor, the chopped fibers meeting the length requirement can be ensured to be screened out in a uniformly dispersed manner, and meanwhile, the chopped fibers are not agglomerated into balls.
In this example, the physical photograph of the obtained chopped fiber is shown in FIG. 2, the optical microscopic photograph of the length of the chopped fiber is shown in FIG. 3 and FIG. 4, and it can be seen from FIGS. 3 and 4 that the obtained chopped fiber has a uniform length of about 1mm, a diameter of about 15 to 17. Mu.m, and is uniformly dispersed without the phenomenon of fiber adhesion.
100 roots are randomly extracted, the percentage of the roots with the length of 1mm plus or minus 0.5mm to the total roots is 97.5 percent, and the chopped fibers have good dispersibility, uniform and stable length and high disposable qualification rate.
Example 2A continuous Process for the production of chopped fibers
This example uses the same equipment as example 1, comprising the following steps:
s1, combining four strands of PP fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the multifilament onto a fiber drum to obtain a fiber drum after doubling;
s2, hanging the fiber barrels obtained in the step S1 on a fiber barrel hanging frame, pulling one fiber multifilament from each fiber barrel after doubling to obtain a plurality of fiber multifilament, entering a fiber warping device for warping after passing through a wire guide hole with the diameter of 5mm and a wire guide grating with the gap of 2mm, obtaining a fiber surface matched with the feeding width of a fiber cutting machine after integrating the plurality of fiber multifilament, pulling by a back feeding roller, and extruding to obtain a flattened fiber bundle;
s3, continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a straight fiber surface through the pressing block, and then entering a cutting edge of the fiber cutting machine, wherein a first cutter is kept motionless when the cutting edge is processed, and a second cutter reciprocates and cuts into a target length of 3mm to obtain chopped fibers;
in the step, the surfaces of a first compression roller and a second compression roller of the cutting and feeding roller are coated with polyurethane; the inclination angle of the second cutter blade of the cutting edge is 15 degrees; the distance of the movement of the fiber bundle pulled by each rotation of the cutting feed roller is consistent with the target length of the fiber bundle cutting, and is 3mm, and the movement frequency of the second cutter of the cutting edge is consistent with the movement step frequency of the cutting feed roller;
s4, sending the chopped fibers into a metal mesh screen, carrying out vibration screening through a vibration motor, and collecting the chopped fibers by a fiber collecting device below after the chopped fibers pass through the metal mesh screen; wherein the mesh of the metal mesh screen has a side length 1.2 times the target length of the chopped fibers in step S3.
The chopped fibers prepared in this example were uniform in length, about 3 mm. 100 pieces are randomly extracted, the percentage of the number of the roots with the length of 3mm plus or minus 0.5mm to the total number is 98.2 percent, and the chopped fibers have good dispersibility, uniform and stable length and high disposable qualification rate.
Example 3A continuous Process for the production of chopped fibers
This example uses the same equipment as example 1, comprising the following steps:
s1, combining eight strands of PE fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the multifilament onto a fiber drum to obtain a fiber drum after doubling;
s2, hanging the fiber barrels obtained in the step S1 on a fiber barrel hanging frame, pulling one fiber multifilament from each fiber barrel after doubling to obtain a plurality of fiber multifilament, entering a fiber warping device for warping after passing through a wire guide hole with the diameter of 3mm and a wire guide grating with the gap of 5mm, obtaining a fiber surface matched with the feeding width of a fiber cutting machine after integrating the plurality of fiber multifilament, pulling by a back feeding roller, and extruding to obtain a flattened fiber bundle;
s3, continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a straight fiber surface through the pressing block, and then entering a cutting edge of the fiber cutting machine, wherein a first cutter is kept motionless when the cutting edge is processed, and a second cutter reciprocates and cuts into a target length of 10mm to obtain chopped fibers;
in the step, the surfaces of a first compression roller and a second compression roller of the cutting and feeding roller are coated with polyurethane; the inclination angle of the second cutter blade of the cutting edge is 10 degrees; the distance of the movement of the fiber bundle pulled by each rotation of the cutting feed roller is consistent with the target length of the fiber bundle cutting, and is 10mm, and the movement frequency of the second cutter of the cutting edge is consistent with the movement step frequency of the cutting feed roller;
s4, sending the chopped fibers into a metal mesh screen, carrying out vibration screening through a vibration motor, and collecting the chopped fibers by a fiber collecting device below after the chopped fibers pass through the metal mesh screen; wherein the mesh of the metal mesh screen has a side length 1.5 times the target length of the chopped fibers in step S3.
The chopped fibers prepared in this example were uniform in length, about 10 mm. Randomly extracting 100 roots, wherein the total roots are counted by the roots with the length of 10mm plus or minus 0.5mmThe percentage of (2) is 98.9% ， The chopped fiber has good dispersibility, uniform and stable length and high disposable qualification rate.
Example 4A continuous Process for the production of chopped fibers
This example uses the same equipment as example 1, comprising the following steps:
s1, combining twelve strands of PA6 fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the fiber multifilament on a fiber drum to obtain a fiber drum after doubling;
s2, hanging the fiber barrels obtained in the step S1 on a fiber barrel hanging frame, pulling one fiber multifilament from each fiber barrel after doubling to obtain a plurality of fiber multifilament, entering a fiber warping device for warping after passing through a yarn guide hole with the diameter of 8mm and a yarn guide grating with the gap of 4mm, obtaining a fiber surface matched with the feeding width of a fiber cutting machine after integrating the plurality of fiber multifilament, pulling by a back feeding roller, and extruding to obtain a flattened fiber bundle;
s3, continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a straight fiber surface through the pressing block, and then entering a cutting edge of the fiber cutting machine, wherein a first cutter is kept motionless when the cutting edge is processed, and a second cutter reciprocates and cuts into a target length of 8mm to obtain chopped fibers;
in the step, the surfaces of a first compression roller and a second compression roller of the cutting and feeding roller are coated with polyurethane; the inclination angle of the second cutter blade of the cutting edge is 20 degrees; the distance of the movement of the fiber bundle pulled by each rotation of the cutting feed roller is consistent with the target length of the fiber bundle cutting, and is 8mm, and the movement frequency of the second cutter of the cutting edge is consistent with the movement step frequency of the cutting feed roller;
s4, sending the chopped fibers into a metal mesh screen, carrying out vibration screening through a vibration motor, and collecting the chopped fibers by a fiber collecting device below after the chopped fibers pass through the metal mesh screen; wherein the mesh of the metal mesh screen has a side length 2.5 times the target length of the chopped fibers in step S3.
The chopped fibers prepared in this example were uniform in length, about 8 mm. 100 roots are randomly extracted, the percentage of the roots with the length of 8mm plus or minus 0.5mm to the total roots is 96.8 percent, and the chopped fibers have good dispersibility, uniform and stable length and high disposable qualification rate.
Example 5A continuous Process for the production of chopped fibers
This example uses the same equipment as example 1, comprising the following steps:
s1, combining ten strands of PA66 fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the fiber multifilament on a fiber drum to obtain a fiber drum after doubling;
s2, hanging the fiber barrels obtained in the step S1 on a fiber barrel hanging frame, pulling one fiber multifilament from each fiber barrel after doubling to obtain a plurality of fiber multifilament, entering a fiber warping device for warping after passing through a wire guide hole with the diameter of 6mm and a wire guide grating with the gap of 3mm, obtaining a fiber surface matched with the feeding width of a fiber cutting machine after integrating the plurality of fiber multifilament, pulling by a back feeding roller, and extruding to obtain a flattened fiber bundle;
s3, continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a flat fiber surface through the pressing block, and then entering a cutting edge of the fiber cutting machine, wherein a first cutter is kept motionless when the cutting edge is processed, and a second cutter reciprocates and cuts into a target length of 0.5mm to obtain chopped fibers;
in the step, the surfaces of a first compression roller and a second compression roller of the cutting and feeding roller are coated with polyurethane; the inclination angle of the second cutter blade of the cutting edge is 12 degrees; the distance of the movement of the fiber bundle pulled by each rotation of the cutting feed roller is consistent with the target length of the fiber bundle cutting, and is 0.5mm, and the movement frequency of the second cutter of the cutting edge is consistent with the movement step frequency of the cutting feed roller;
s4, sending the chopped fibers into a metal mesh screen, carrying out vibration screening through a vibration motor, and collecting the chopped fibers by a fiber collecting device below after the chopped fibers pass through the metal mesh screen; wherein the mesh of the metal mesh screen has a side length 1.8 times the target length of the chopped fibers in step S3.
The chopped fibers prepared in this example were uniform in length, about 0.5 mm. 100 pieces of the fiber are randomly extracted, the percentage of the number of the 0.5mm plus or minus 0.5mm length to the total number of the fiber is 93.2 percent, and the chopped fiber has good dispersibility, uniform and stable length and high disposable qualification rate.
Comparative example 1
The process of this comparative example 1 is similar to that of example 1, except that the chopped fibers obtained by cutting the fiber bundles are not screened by a fiber screening apparatus.
Table 1 comparative results
Tests show that after being screened by the fiber screening device, the length qualification rate of the chopped fibers is improved by more than 20%, the complete dispersion time of the chopped fibers in the dental tray powder is obviously shortened, the subsequent processing of the chopped fibers is facilitated, the dispersibility in a medium is improved, and the chopped fibers prepared by the method are uniform in length and high in qualification rate.
It should be noted that the foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but the present invention is described in detail with reference to the foregoing embodiment, and it will be apparent to those skilled in the art that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A continuous production method of chopped fibers, comprising the steps of:
s1, merging at least two strands of fibers into one strand of fibers through a fiber doubling device to form fiber multifilament, and winding the multifilament onto a fiber drum to obtain a fiber drum after doubling;
s2, drawing out a fiber multifilament from each fiber drum after doubling to obtain a plurality of fiber multifilament, entering fiber warping equipment for warping after passing through a yarn guide hole and a yarn guide grating to obtain a fiber surface matched with the feeding width of a fiber cutting machine, and drawing by a subsequent feeding roller to obtain a flattened fiber bundle;
s3, continuously processing the fiber bundles through a fiber cutting machine under the action of rotation traction of a cutting feed roller, and cutting the fiber bundles into target lengths to obtain chopped fibers;
s4, sending the chopped fibers into a fiber screening device for vibration screening, and after passing through the fiber screening device, entering a fiber collecting device below for collection.
2. The continuous production method of chopped fibers according to claim 1, wherein in the step S2, the diameter of the wire guide hole is 2-8 mm, and the gap of the wire guide grid is 2-5 mm.
3. The continuous production method of chopped fibers according to claim 1, wherein the specific process in step S3 is:
continuously pressing the fiber bundles through a pressing block of a fiber cutting machine under the action of rotation and traction of a cutting feeding roller, pressing the fiber bundles into a flat fiber surface through the pressing block, and then feeding the fiber bundles into a cutting edge of the fiber cutting machine for processing, and cutting the fiber bundles into a target length to obtain chopped fibers.
4. The continuous production method of chopped fibers according to claim 3, wherein the cutting edge comprises a first cutter and a second cutter which are matched, the cutting edge of the second cutter is an inclined plane, and the inclined angle is 10-30 degrees;
after the fiber bundles are pressed into flat fiber surfaces by the pressing blocks, when the fiber bundles enter a cutting knife edge of a fiber cutting machine for processing, a first knife of the cutting knife edge is kept motionless, and a second knife moves reciprocally.
5. The continuous production method of chopped fibers according to claim 3 or 4, wherein the distance that the cutting feed roller rotates each time to pull the fiber bundle to move is consistent with the target length cut by the fiber bundle, and is 0.5-10 mm, and the reciprocating frequency of the second cutter of the cutting edge is consistent with the moving step frequency of the cutting feed roller.
6. The continuous production method of chopped fibers according to claim 5, wherein the surface of the cutting feed roller is coated with EVA, polyurethane, polytetrafluoroethylene or hard rubber.
7. The continuous production method of chopped fibers according to claim 1, wherein in the step S4, the fiber screening device adopts a metal mesh screen, the mesh of the metal mesh screen is a square mesh, and the side length of the metal mesh screen is 1-2.5 times of the target length of the chopped fibers.
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| CN202310105165.4A CN116219586A (en) | 2023-02-13 | 2023-02-13 | Continuous production method of chopped fibers |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004244763A (en) * | 2003-02-14 | 2004-09-02 | Asahi Kasei Fibers Corp | Elastic filament bundle for cut fiber and method for producing the same |
| JP2004300611A (en) * | 2003-03-31 | 2004-10-28 | Daiwabo Co Ltd | Method for cutting fiber tow |
| CN107557995A (en) * | 2012-04-04 | 2018-01-09 | 复合材料公司 | The product for converting the method for glass fabric material and being obtained by methods described |
| CN209381411U (en) * | 2019-01-12 | 2019-09-13 | 浙江杜朗德新材料科技有限公司 | A kind of interior guide structure for solidifying electric pole production line |
| CN212000202U (en) * | 2020-04-14 | 2020-11-24 | 佛山市马大生纺织有限公司 | Yarn bundle separation guiding device for rope dyeing machine |
| CN112391694A (en) * | 2020-12-01 | 2021-02-23 | 浙江泓泰德建新纤维有限公司 | Method for preparing composite spun short fiber by FDY composite spun fiber filament |
| CN115287785A (en) * | 2022-09-13 | 2022-11-04 | 江苏先诺新材料科技有限公司 | Polyimide chopped fiber production equipment |
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2023
- 2023-02-13 CN CN202310105165.4A patent/CN116219586A/en active Pending
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|---|---|---|---|---|
| JP2004244763A (en) * | 2003-02-14 | 2004-09-02 | Asahi Kasei Fibers Corp | Elastic filament bundle for cut fiber and method for producing the same |
| JP2004300611A (en) * | 2003-03-31 | 2004-10-28 | Daiwabo Co Ltd | Method for cutting fiber tow |
| CN107557995A (en) * | 2012-04-04 | 2018-01-09 | 复合材料公司 | The product for converting the method for glass fabric material and being obtained by methods described |
| CN209381411U (en) * | 2019-01-12 | 2019-09-13 | 浙江杜朗德新材料科技有限公司 | A kind of interior guide structure for solidifying electric pole production line |
| CN212000202U (en) * | 2020-04-14 | 2020-11-24 | 佛山市马大生纺织有限公司 | Yarn bundle separation guiding device for rope dyeing machine |
| CN112391694A (en) * | 2020-12-01 | 2021-02-23 | 浙江泓泰德建新纤维有限公司 | Method for preparing composite spun short fiber by FDY composite spun fiber filament |
| CN115287785A (en) * | 2022-09-13 | 2022-11-04 | 江苏先诺新材料科技有限公司 | Polyimide chopped fiber production equipment |
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