CN113529235A - Method for producing pure fibrilia fabric and pure fibrilia fabric produced by the method - Google Patents

Method for producing pure fibrilia fabric and pure fibrilia fabric produced by the method Download PDF

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Publication number
CN113529235A
CN113529235A CN202010290485.8A CN202010290485A CN113529235A CN 113529235 A CN113529235 A CN 113529235A CN 202010290485 A CN202010290485 A CN 202010290485A CN 113529235 A CN113529235 A CN 113529235A
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fibrilia
fabric
pure
alkali
yarn
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斯特凡诺·奇普里亚尼
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Stefano Cipriani Studio
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Stefano Cipriani Studio
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Priority to CN202010290485.8A priority Critical patent/CN113529235A/en
Priority to PCT/CN2020/093949 priority patent/WO2021208209A1/en
Priority to CN202080092456.9A priority patent/CN115720600A/en
Publication of CN113529235A publication Critical patent/CN113529235A/en
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    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D03D15/208—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based
    • D03D15/217—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads cellulose-based natural from plants, e.g. cotton
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/47—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads multicomponent, e.g. blended yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/60—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the warp or weft elements other than yarns or threads
    • D03D15/68—Scaffolding threads, i.e. threads removed after weaving
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • 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
    • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00—Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01—Natural vegetable fibres

Abstract

The application provides a production method of pure fibrilia fabric and the pure fibrilia fabric produced by the method. The method for producing the pure fibrilia fabric can comprise the following steps: preparing long fibrilia; preparing alkali soluble fiber; spinning the long fibrilia mixed with the alkali soluble fiber into yarn through wet spinning; weaving or knitting the yarn into a fabric; and dissolving the alkali-soluble fiber in the fabric with an alkali solution to remove the alkali-soluble fiber from the fabric, thereby obtaining a pure fibrilia fabric. By the production method of the pure fibrilia fabric, the pure fibrilia fabric with the yarn count up to 70 metric counts and single strand can be produced with industrial-grade yield and quality, the possible pollution of production to the environment is reduced to the maximum extent, the dyeing process after dissolution is facilitated, and the dyeing performance of the fabric can be improved; the produced pure fibrilia fabric is soft and light in texture, has excellent air permeability and hygroscopicity, and has outstanding dyeing performance.

Description

Method for producing pure fibrilia fabric and pure fibrilia fabric produced by the method
Technical Field
The application relates to the field of textiles, in particular to a method for producing pure fibrilia fabric and the pure fibrilia fabric produced by the method.
Background
The bast fiber generally refers to a fiber obtained from a bast plant, and among them, flax, hemp, jute, ramie, apocynum venetum and the like are widely used for textile. For example, hemp textile fabrics made of flax and hemp fibers are attracting attention because of their comfort and other advantages.
The characteristics of the bast fibers make the pure bast fiber fabrics hard, not light enough, and because of the poor and irregular fineness of the bast fibers, the pure bast fiber fabrics with single yarn count higher than 70 metric counts cannot be produced at present with industrial-grade yield and quality particularly under the condition of wet spinning.
Disclosure of Invention
According to an aspect of the present application, there is provided a method of producing a pure hemp fabric, which may include: preparing long fibrilia; preparing alkali soluble fiber; spinning the long fibrilia mixed with the alkali soluble fiber into yarn through wet spinning; weaving or knitting the yarn into a fabric; and dissolving the alkali-soluble fiber in the fabric with an alkali solution to remove the alkali-soluble fiber from the fabric, thereby obtaining a pure fibrilia fabric.
According to the production method of the pure fibrilia fabric, the pure fibrilia fabric with the yarn count as high as 70 metric counts and single strand can be produced with industrial-grade yield and quality, the possible pollution of production to the environment can be reduced to the maximum extent, the dyeing process performed after dissolution can be facilitated, and the dyeing performance of the fabric can be improved; the pure fibrilia fabric produced by the production method of the pure fibrilia fabric is soft and light in texture, has excellent air permeability and hygroscopicity, and is outstanding in dyeing performance.
According to one embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, when long fibrilia mixed with alkali-soluble fiber is spun into a yarn by wet spinning, the long fibrilia must be wetted with water before being fed into a spinning system. By the method for producing the pure fibrilia fabric according to the embodiment, the wet spinning technology can be effectively applied to the spinning process of the long fibrilia and the excellent performance of the long fibrilia can be fully utilized, so that the pure fibrilia fabric can have the required soft texture.
According to one embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, when long fibrilia mixed with alkali-soluble fiber is spun into a yarn by wet spinning, the twist of the yarn can be increased as the number of spun yarn increases. According to the production method of the pure fibrilia fabric, the spun yarn has appropriate high strength while having the required high count, the yarn is not easy to break in the weaving process, and the yarn can be woven or knitted into the fabric with extremely low failure rate, so that the high-count pure fibrilia fabric with industrial-grade yield and quality is finally obtained.
According to an embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, when long fibrilia mixed with alkali-soluble fiber is spun into a yarn by wet spinning, the twist of the yarn can be increased as the proportion of the long fibrilia in the spun yarn is decreased. By the method for producing the pure fibrilia fabric according to the embodiment, the pure fibrilia fabric after dissolving the alkali-soluble fiber can have appropriate enough strength while being soft and light in texture, high in air permeability and hygroscopicity, so that the high-count pure fibrilia fabric with industrial-grade yield and quality can be finally obtained.
According to an embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, the volume percentage of the long fibrilia may be 60% or more and the volume percentage of the alkali-soluble fiber may be 40% or less in the spun yarn. By the method for producing a pure fibrilia fabric according to the embodiment, a high-count pure fibrilia fabric with industrial-grade yield and quality can be finally obtained, and the obtained pure fibrilia fabric is soft and light in texture, can also have appropriate sufficient strength, and can also have excellent air permeability and hygroscopicity.
According to an embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, the volume percentage of the long fibrilia may be 85% to 90% and the volume percentage of the alkali-soluble fiber may be 10% to 15% in the spun yarn. By the method for producing pure fibrilia fabric according to the embodiment, high-count pure fibrilia fabric with industrial grade yield and quality can be finally obtained, and the obtained pure fibrilia fabric has soft and light texture, proper enough strength, and excellent air permeability and hygroscopicity.
According to an embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, the volume percentage of the long fibrilia may be 60% and the volume percentage of the alkali-soluble fiber may be 40% in the spun yarn. By the production method of the pure fibrilia fabric according to the embodiment, the high-count pure fibrilia fabric with industrial-grade yield and quality can be finally obtained; and the obtained pure fibrilia fabric has very soft texture and very light weight, and simultaneously has proper enough strength, and also has excellent air permeability and moisture absorption.
According to one embodiment of the present application, in the process for producing a pure fibrilia fabric as described above, the fabric may be placed in a solution of NaOH having a Baum é degree of 36 for 24 hours to dissolve alkali-soluble fibers in the fabric. By the method for producing a pure fibrilia fabric according to this embodiment, alkali-soluble fiber can be dissolved and removed from the fabric to the maximum extent, thereby finally obtaining a high-count pure fibrilia fabric with industrial-grade yield and quality.
According to one embodiment of the present application, in the method for producing a pure fibrilia fabric as described above, the length and diameter of the alkali-soluble fiber may be respectively matched with those of the long fibrilia, so that the long fibrilia mixed with the alkali-soluble fiber can be spun into a yarn by wet spinning. By the method for producing a pure fibrilia fabric according to the embodiment, long fibrilia and alkali-soluble fiber can be sufficiently combined with each other in a wet spinning process, so that a required yarn is spun, and finally a high-count pure fibrilia fabric with industrial-grade yield and quality is obtained.
According to an embodiment of the present application, in the method for producing a pure hemp fiber fabric as described above, the alkali-soluble fiber may have a diameter of not less than 2 denier and/or a length of not less than 88 mm. By the method for producing a pure fibrilia fabric according to the embodiment, long fibrilia and alkali-soluble fiber can be sufficiently combined with each other in a wet spinning process, so that a required yarn is spun, and finally a high-count pure fibrilia fabric with industrial-grade yield and quality is obtained.
According to an embodiment of the present application, in the method for producing a pure hemp fabric as described above, the alkali-soluble fiber may be a polyester fiber. Because the polyester fiber has good crease resistance and shape retention, and has higher strength and elasticity recovery capability, when the long fibrilia mixed with the alkali soluble fiber is spun into yarn by a wet spinning method, the spun yarn has appropriate high strength while having required high count, the yarn is not easy to break in the weaving process, and the yarn can be woven or knitted into fabric with extremely low failure rate, thereby finally obtaining the high-count pure fibrilia fabric with industrial-grade yield and quality. Furthermore, by the method for producing a pure fibrilia fabric according to this embodiment, alkali-soluble fibers can be dissolved and removed from the fabric, thereby finally obtaining a high-count pure fibrilia fabric of industrial-grade yield and quality.
According to an embodiment of the present application, the method for producing pure hemp fabric as described above may further include: the obtained pure fibrilia fabric is dyed. By the production method of the pure fibrilia fabric, the pure fibrilia fabric with the single yarn strand of 70 metric counts can be produced with industrial-grade yield and quality, the dyeing process performed after dissolution can be facilitated, and the dyeing performance of the fabric can be improved; and the obtained pure fibrilia fabric is soft and light in texture, has excellent air permeability and hygroscopicity, and has outstanding dyeing performance.
According to an embodiment of the present application, in the method for producing pure hemp fabric as described above, the spinning system may be a ring spinning system. According to the production method of the pure fibrilia fabric, the wet spinning technology can be effectively applied to the spinning process of the long fibrilia, and the excellent physical properties of the long fibrilia are fully utilized, so that the pure fibrilia fabric has the required soft texture.
According to another aspect of the present application, there is also provided a pure fibrilia fabric, which can be made by the method for producing the pure fibrilia fabric. The pure fibrilia fabric according to the application has soft and light texture, excellent air permeability and moisture absorption and outstanding dyeing performance.
According to one embodiment of the present application, the count of the yarn in the pure hemp fabric may be 70 cm single strand or more. The pure hemp fabric according to this embodiment is soft and light in texture, has excellent air permeability and moisture absorption, and is excellent in dyeing property.
According to one embodiment of the application, in the pure hemp fabric described above, the long hemp fibers are flax fibers or hemp fibers. The pure hemp fabric according to this embodiment is soft and light in texture, has excellent air permeability and moisture absorption, and is excellent in dyeing property.
Drawings
Features, advantages, and technical and industrial significance of exemplary embodiments of the present application will be described in detail below with reference to the accompanying drawings, in which like reference numerals represent the same or similar components or steps, and in which:
FIG. 1 shows a flow diagram of a method for producing a pure hemp fabric according to an embodiment of the present application;
fig. 2A shows a cross-sectional view of a yarn of a pure fibrilia fabric before dissolving alkali-soluble fiber in the process for producing the pure fibrilia fabric according to an embodiment of the present application;
FIG. 2B shows a cross-sectional view of the yarns of the pure fibrilia fabric after dissolving alkali-soluble fibers in the process for producing the pure fibrilia fabric according to the embodiment of the present application;
FIG. 3 shows a flow diagram of a method of producing a pure hemp fabric according to an embodiment of the present application; and
fig. 4 shows a flow diagram of a method for producing a pure fibrilia fabric according to an embodiment of the present application.
Detailed Description
Hereinafter, a method for producing a pure hemp fabric provided by the present application and a pure hemp fabric produced by the production method will be described with reference to the drawings attached to the specification.
Fig. 1 shows a method for producing a pure fibrilia fabric according to an embodiment of the present application. As shown in fig. 1, a method 10 for producing a pure hemp fabric comprises the following steps: s100, preparing long fibrilia; s200, preparing alkali-soluble fibers; s300, spinning the long fibrilia mixed with the alkali-soluble fiber into yarns through wet spinning; s400, weaving or knitting the yarn into a fabric; and S500, dissolving the alkali-soluble fibers in the fabric by using an alkali solution to remove the alkali-soluble fibers from the fabric, thereby obtaining the pure fibrilia fabric.
The pure fibrilia fabric obtained by the production method of the pure fibrilia fabric has a special yarn structure. After dissolving the alkali-soluble fibers in the fabric, only long fibrilia are present in the yarn structure of the fabric, and voids are left between the long fibrilia at the positions occupied before the alkali-soluble fibers are dissolved. Fig. 2A shows a cross-sectional view of a yarn of the pure fibrilia fabric before dissolving the alkali-soluble fiber in the method for producing the pure fibrilia fabric according to the embodiment of the present application, and fig. 2B shows a cross-sectional view of a yarn of the pure fibrilia fabric after dissolving the alkali-soluble fiber in the method for producing the pure fibrilia fabric according to the embodiment of the present application, and by comparing the two views, it can be seen that voids are present in the yarn of the fabric after dissolving the alkali-soluble fiber, and the larger the volume percentage of the alkali-soluble fiber in the spun yarn, the more voids are left after dissolving the alkali-soluble fiber. It is this hollow yarn structure that makes the pure hemp fabric obtained by the method for producing the pure hemp fabric according to the present application soft and light in texture, excellent in air permeability and moisture absorption, and outstanding in dyeing property. In addition, the fabric has a special yarn structure, and the yarns of the fabric can have higher counts, so that the fabric is softer in texture.
In the method for producing a pure hemp fabric according to the present application, the long hemp fiber means a long hemp fiber made based on long hemp carded by carding the carded hemp, and the short hemp fiber is made based on the noil, i.e., the short hemp, generated in the hackling process, as opposed to the short hemp fiber.
The long fibrilia can be prepared in a suitable manner in the prior art for use in the subsequent steps of the production method of the pure fibrilia fabric according to the present application. Taking flax as an example, for example, in one embodiment of the present application, the carded ramie after primary processing can be carded by a hackling machine, and the long carded ramie is carded out, so that the obtained long carded ramie has longer length, is more orderly and has higher strength, and the long carded ramie is one of two basic materials for producing the pure fibrilia fabric by the production method of the pure fibrilia fabric according to the present application, which is an important guarantee that the production method of the pure fibrilia fabric can produce the pure fibrilia fabric which has soft texture, light weight, and excellent air permeability and moisture absorption.
As another base material of the production method of pure fibrilia fabric of the present application, alkali-soluble fiber refers to alkali-water-soluble fiber, i.e. fiber having sufficient alkali-water solubility, which can be sufficiently dissolved in alkali solution under specific conditions. In one embodiment of the present application, the alkali-soluble fiber may be a fiber made of an alkali-soluble modified polyester copolymer having an intrinsic viscosity of 0.40 to 0.65dl/g, wherein the content of antimony compound is 100ppm or less in terms of antimony atom with respect to the amount of polyanhole.
Likewise, alkali-soluble fibers can be prepared in a suitable manner in the prior art for use in the subsequent steps of the production process of the pure fibrilia fabric according to the present application. In one embodiment of the present application, the alkali-soluble fiber can be made, for example, by a spinning machine after the alkali-soluble modified polyester copolymer is prepared by snorting, polymerization.
The alkali-soluble fiber to be prepared should have sufficient alkali-solubility and also should have specific physical properties so as to be sufficiently bonded to the long fibrilia. In one embodiment according to the present application, the prepared alkali-soluble fiber length and diameter are matched with the prepared long fibrilia length and diameter, respectively, so that the alkali-soluble fiber and the long fibrilia can be uniformly mixed and sufficiently combined, so that the long fibrilia mixed with the alkali-soluble fiber can be spun into yarn by wet spinning.
In a preferred embodiment according to the present application, the alkali-soluble fiber prepared has a diameter of not less than 2 denier. In another preferred embodiment according to the present application, the alkali-soluble fiber is prepared to have a length of not less than 88 mm.
After preparing the long fibrilia and the alkali-soluble fiber according to the method for producing a pure fibrilia fabric of the present application, the prepared long fibrilia and the alkali-soluble fiber may be mixed, and the mixed long fibrilia and alkali-soluble fiber may be spun into a yarn by wet spinning. In the present application, in order to make full use of the excellent properties of long fibrilia, the spinning method used for the mixed fiber is a wet spinning method suitable for long fibrilia, not a dry spinning method.
According to one embodiment of the present application, the prepared long fibrilia and alkali-soluble fiber may be pre-combined on a needle-carding drawing frame to obtain a fibrilia sliver, and the pre-combined long fibrilia and alkali-soluble fibrilia sliver may be combined on the drawing frame in a specific ratio to mix the two fibers, and the combining may be performed a plurality of times to sufficiently mix the long fibrilia and the alkali-soluble fiber. Then, the long fibrilia blended with the alkali-soluble fiber may be subjected to roving, spun yarn spinning on a wet spinning machine to obtain a blended yarn containing the long fibrilia and the alkali-soluble fiber. According to another embodiment of the present application, the blended yarn of long hemp fibers and alkali-soluble fibers can be subjected to spooling, warping and slashing for subsequent steps.
According to one embodiment of the present application, the long fibrilia is wetted with water before mixing the long fibrilia and the alkali-soluble fiber to fully utilize the excellent characteristics of the long fibrilia.
According to one embodiment of the present application, it is also possible to wet the long fibrilia mixed with the alkali-soluble fiber with water before feeding the long fibrilia into the wet spinning machine to fully utilize the excellent characteristics of the long fibrilia.
According to one embodiment of the present application, the spinning system used when spinning the long fibrilia mixed with the alkali-soluble fiber on a wet spinning machine may be a ring spinning system.
After obtaining a yarn of long fibrilia blended with alkali-soluble fiber through the above steps, the obtained yarn can be woven into a fabric in a suitable manner. In the method for producing a pure hemp fabric according to an embodiment of the present application, the weaving manner used is weaving or knitting.
Regardless of the weaving method, when the yarn is woven into a fabric, the yarn should have a certain strength, and for a given long fibrilia and alkali-soluble fiber, the yarn can be made to have the strength required for weaving by increasing the yarn twist in the spinning process. On the other hand, the number of spun yarns needs to be increased when spinning is performed, so that the fabric obtained finally has a higher number, and the texture of the fabric is softer.
According to one embodiment of the present application, when long fibrilia mixed with alkali-soluble fiber is spun into a yarn by wet spinning, the twist of the yarn can be increased as the number of spun yarn increases. Thus, the spun yarn has appropriate and sufficient strength while having the required high count, the yarn is not easy to break in the weaving process, and the yarn can be woven or knitted into fabrics with little downtime, so that high-count pure hemp fiber fabrics with industrial grade yield and quality are finally obtained.
As described above, according to the technical solution disclosed in the present application, the alkali-soluble fiber is dissolved to leave voids in the yarns of the fabric, and the larger the volume percentage of the alkali-soluble fiber in the spun yarn, i.e. the smaller the volume percentage of the long fibrilia, the more voids are left after the alkali-soluble fiber is dissolved, and the softer and lighter the fabric is for a given yarn count.
According to one embodiment of the present application, when the long fibrilia mixed with the alkali-soluble fiber is spun into the yarn by wet spinning, the twist of the yarn may be increased as the volume percentage of the long fibrilia in the spun yarn is decreased. Thus, the pure fibrilia fabric dissolved with the alkali-soluble fiber can have appropriate enough strength while being soft and light, and has high air permeability and hygroscopicity, so that the pure fibrilia fabric is not easy to break, and finally the high-count pure fibrilia fabric with industrial-grade yield and quality can be obtained.
However, the proportion of long fibrilia in the spun yarn is too low, and the finally obtained pure fibrilia fabric itself may not have proper strength, and the quality of the produced pure fibrilia fabric cannot be ensured. The inventors of the present application conducted a number of experiments on the count and twist of the yarn in terms of different ratios of long fibrilia to alkali-soluble fiber in the spun yarn, and aimed to determine an appropriate ratio of long fibrilia to alkali-soluble fiber in the spun yarn in the method for producing a pure fibrilia fabric according to the present application, thereby enabling the obtained pure fibrilia fabric to have appropriate strength while having a soft and light texture, high air permeability and moisture absorption.
Table 1 shows the test results of the spun yarn for knitting, and table 2 shows the test results of the spun yarn for knitting.
TABLE 1
Figure BDA0002450214750000091
TABLE 2
Figure BDA0002450214750000101
In tables 1 and 2, the standard of the count is metric standard (NM), the unit of twist is number of Turns Per Meter (TPM), "soluble fiber" is used to mean alkali-soluble fiber, "initial count" means the count of the spun yarn, and "final count" means the count of the yarn of the fabric after the alkali-soluble fiber is dissolved.
According to one embodiment of the present application, the volume percent of long hemp fibers can be more than 60% and the volume percent of alkali-soluble fibers can be less than 40% in the spun yarn. In particular, according to a preferred embodiment of the present application, in the spun yarn, the long fibrilia may account for 60% and the alkali-soluble fiber may account for 40%. Thus, the high-count pure fibrilia fabric with industrial-grade yield and quality can be finally obtained, and the obtained pure fibrilia fabric has soft and light texture, proper enough strength, and excellent air permeability and moisture absorption.
According to other embodiments of the present application, the long fibrilia may be present in an amount of 85% to 90% and the alkali-soluble fiber may be present in an amount of 10% to 15% in the spun yarn. Thus, the high-count pure fibrilia fabric with industrial-grade yield and quality can be finally obtained, and the obtained pure fibrilia fabric has appropriate strength while being soft and light in texture and also has excellent air permeability and hygroscopicity.
After obtaining a woven fabric by weaving or knitting the spun yarn, alkali-soluble fibers in the fabric may be dissolved with an alkali solution to remove the alkali-soluble fibers from the fabric, thereby obtaining a pure fibrilia fabric. The alkali-soluble fiber is dissolved by the alkali solution, the dissolved alkali solution is environment-friendly, and the possible pollution of production to the environment can be reduced to the maximum extent. In addition, if the fabric is dyed after dissolving, the alkaline solution dissolving action can also improve the dyeing performance of the fabric.
According to a preferred embodiment of the present application, the alkali-soluble fibers in the fabric can be dissolved by placing the fabric in a solution of NaOH having a Baum é degree of 36 for 24 hours. This enables the alkali soluble fibers to be completely dissolved and removed from the fabric, resulting in a high count pure hemp fabric of technical grade yield and quality.
According to one embodiment of the present application, after the yarn is woven into a fabric, the fabric may also be desized, singed, and then alkali-soluble fibers in the fabric are dissolved with an alkali solution to remove the alkali-soluble fibers from the fabric, followed by water washing.
Fig. 3 shows a method for producing a pure hemp fabric according to the above embodiment, which comprises: s100, preparing long fibrilia; s200, preparing alkali-soluble fibers; s300, spinning the long fibrilia mixed with the alkali-soluble fiber into yarns through wet spinning; s400, weaving or knitting the yarn into a fabric; s500, removing the pulp of the woven or knitted fabric; s600, singeing the woven or knitted fabric; s700, dissolving alkali-soluble fibers in the fabric by using an alkali solution to remove the alkali-soluble fibers from the fabric; and S800, washing the fabric from which the alkali soluble fiber is removed, so as to obtain the pure fibrilia fabric.
According to one embodiment of the application, the obtained pure fibrilia fabric can also be dyed. As described above, the dissolution of the alkali solution can also improve the dyeing properties of the fabric, and the obtained pure fibrilia fabric is soft and light in texture, has excellent air permeability and hygroscopicity, and has outstanding dyeing properties.
Fig. 4 shows a method for producing a pure hemp fabric according to the above embodiment, which comprises: s100, preparing long fibrilia; s200, preparing alkali-soluble fibers; s300, spinning the long fibrilia mixed with the alkali-soluble fiber into yarns through wet spinning; s400, weaving or knitting the yarn into a fabric; s500, dissolving alkali-soluble fibers in the woven or knitted fabric by using an alkali solution to remove the alkali-soluble fibers from the woven or knitted fabric, thereby obtaining a pure fibrilia fabric; s600, dyeing the pure fibrilia fabric; s700, finishing the pure fibrilia fabric.
According to the production method of the pure fibrilia fabric, the pure fibrilia fabric with the yarn count up to 70 metric counts and single strand can be produced with industrial-grade yield and quality, the possible pollution of production to the environment can be reduced to the maximum extent, the dyeing process performed after dissolution can be facilitated, and the dyeing performance of the fabric can be improved.
As described above, the pure hemp fabric produced by the method for producing a pure hemp fabric of the present application is soft and light in texture, has excellent air permeability and moisture absorption, and is excellent in dyeing properties.
According to one embodiment of the present application, the count of the yarn in the pure fibrilia fabric produced by the method for producing pure fibrilia fabric of the present application can reach 70 metric counts per strand and above. Such pure fibrilia fabrics have such a high count and are extremely soft in texture.
According to one embodiment of the present application, the long hemp fibers in the pure hemp fabric produced by the method for producing a pure hemp fabric of the present application are flax fibers or hemp fibers. Of course, the long fibrilia in the pure fibrilia fabric can also be other fibrilia. The pure fibrilia fabric has excellent air permeability and moisture absorption.
The use of the terms "a" and "an" and "the" and similar referents in the context of describing the disclosed embodiments (especially in the context of the following claims) are to be construed to cover both the singular and the plural, unless otherwise indicated herein or clearly contradicted by context. The terms "comprising," "having," "including," and "containing" are to be construed as open-ended terms, i.e., meaning "including, but not limited to," unless otherwise noted. Recitation of ranges of values herein are merely intended to serve as a shorthand method of referring individually to each separate value falling within the range, unless otherwise indicated herein, and each separate value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g., "such as") provided herein, is intended merely to better illuminate embodiments of the disclosure and does not pose a limitation on the scope of the disclosure unless otherwise claimed. No language in the specification should be construed as indicating any non-claimed element as essential to the practice of the disclosure.
It should be understood that the embodiments described herein should be considered in a descriptive sense only and not for purposes of limitation. Descriptions of features or aspects within various embodiments should generally be considered as available for other similar features or aspects in other embodiments. Although one or more embodiments have been described with reference to the accompanying drawings, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

Claims (16)

1. A method for producing a pure fibrilia fabric, which comprises the following steps:
preparing long fibrilia;
preparing alkali soluble fiber;
spinning the long fibrilia mixed with the alkali soluble fiber into yarn through wet spinning;
weaving or knitting the yarn into a fabric; and
dissolving alkali-soluble fibers in the woven or knitted fabric with an alkali solution to remove the alkali-soluble fibers from the woven or knitted fabric, thereby obtaining the pure fibrilia fabric.
2. The method for producing pure fibrilia fabric according to claim 1, wherein, when the long fibrilia mixed with the alkali-soluble fiber is spun into a yarn by wet spinning, the long fibrilia is wetted with water before being fed into a spinning system.
3. The pure fibrilia fabric production method of claim 1 or 2, wherein, when the long fibrilia mixed with the alkali-soluble fiber is spun into a yarn by wet spinning, the twist of the yarn is increased as the number of the spun yarn is increased.
4. The method of producing a pure fibrilia fabric as claimed in claim 3, wherein, when the long fibrilia mixed with the alkali-soluble fiber is spun into a yarn by wet spinning, the twist of the yarn is increased as the proportion of the long fibrilia in the spun yarn is decreased.
5. The method of producing a pure fibrilia fabric according to any one of claims 2-4, wherein the volume percentage of long fibrilia in the spun yarn is 60% or more and the volume percentage of alkali-soluble fiber is 40% or less.
6. The pure fibrilia fabric production method of any one of claims 2-4, wherein in the spun yarn, the volume percentage of long fibrilia is 85-90%, and the volume percentage of alkali-soluble fiber is 10-15%.
7. The pure fibrilia fabric production method of any one of claims 2-4, wherein in the spun yarn, the volume percentage of long fibrilia is 60% and the volume percentage of alkali-soluble fiber is 40%.
8. The process for producing a pure fibrilia fabric according to any one of claims 5-7, wherein the woven or knitted fabric is placed in a NaOH solution with Baum degree of 36 for 24 hours to dissolve alkali soluble fibers in the woven or knitted fabric.
9. The pure fibrilia fabric production method of any one of claims 5-8, wherein the length and diameter of the alkali-soluble fiber are matched with the length and diameter of the long fibrilia, respectively, so that the long fibrilia mixed with the alkali-soluble fiber can be spun into yarn by wet spinning.
10. The method for producing a pure fibrilia fabric according to claim 9, wherein the alkali-soluble fiber has a diameter of not less than 2 denier and/or a length of not less than 88 mm.
11. The method of producing a pure fibrilia fabric as claimed in claim 10, wherein the alkali-soluble fiber is a polyester fiber.
12. The method of producing a pure fibrilia fabric according to any one of the preceding claims, further comprising: the obtained pure fibrilia fabric is dyed.
13. A method of producing a pure fibrilia fabric according to any one of the claims 2-12, wherein the spinning system is a ring spinning system.
14. A pure fibrilia fabric, characterized in that it is produced by a method of producing a pure fibrilia fabric according to any one of claims 1-13.
15. The pure fibrilia fabric of claim 14, wherein the count of the yarn in the pure fibrilia fabric is more than 70 metric counts and single strand.
16. The pure hemp fabric of claim 14 or 15, wherein the long hemp fibers are flax fibers or hemp fibers.
CN202010290485.8A 2020-04-14 2020-04-14 Method for producing pure fibrilia fabric and pure fibrilia fabric produced by the method Pending CN113529235A (en)

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PCT/CN2020/093949 WO2021208209A1 (en) 2020-04-14 2020-06-02 Method for producing pure fibrilia fabric and pure fibrilia fabric produced by means of said method
CN202080092456.9A CN115720600A (en) 2020-04-14 2020-06-02 Method for producing pure fibrilia fabric and pure fibrilia fabric produced by the method

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CN1219116C (en) * 2003-03-20 2005-09-14 济南正昊化纤新材料有限公司 Soluble thermokalite polyester fibre preparation
CN101255618A (en) * 2008-02-29 2008-09-03 龙岩成冠纺织有限公司 Method for preparing easily-soluble polyester fiber
CN101525770A (en) * 2009-03-03 2009-09-09 龙岩成冠化纤有限公司 Method for preparing diffluent polyester fiber
CN101979732A (en) * 2010-11-15 2011-02-23 东华大学 Method for producing linen wet spinning high count yarns and plied yarns
CN102011230B (en) * 2010-11-15 2013-01-16 东华大学 Method for producing flax wet-spun high count yarns and strands by Sirofil
CN101979733B (en) * 2010-11-15 2012-08-29 东华大学 Method for producing hemp high-count yarns and folded yarns through Siro-spinning or Sirofil-spinning
CN105369421B (en) * 2015-11-26 2018-10-02 余燕平 Non-twist, highly -branched textile preparation method
CN105887259A (en) * 2016-06-29 2016-08-24 江苏华信亚麻纺织有限公司 Polyvinyl flax wet spinning high count yarn or plied yarn produced through siro spinning
CN105926094A (en) * 2016-06-29 2016-09-07 江苏华信亚麻纺织有限公司 Vinylon-flax wet-spun high-count yarn or plied yarn and production method thereof
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