CN113215700A - Preparation method of blended multifunctional yarn - Google Patents

Preparation method of blended multifunctional yarn Download PDF

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Publication number
CN113215700A
CN113215700A CN202110274417.7A CN202110274417A CN113215700A CN 113215700 A CN113215700 A CN 113215700A CN 202110274417 A CN202110274417 A CN 202110274417A CN 113215700 A CN113215700 A CN 113215700A
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China
Prior art keywords
spinning
fibers
preparation
proportion
multifunctional yarn
Prior art date
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Withdrawn
Application number
CN202110274417.7A
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Chinese (zh)
Inventor
惠林涛
张丽娜
金夏伟
邵礼滨
范英俊
张云兵
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Shaoxing Keqiao District East Textile Industry Innovation Research Institute
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Shaoxing Keqiao District East Textile Industry Innovation Research Institute
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Priority to CN202110274417.7A priority Critical patent/CN113215700A/en
Publication of CN113215700A publication Critical patent/CN113215700A/en
Withdrawn legal-status Critical Current

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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
    • D02G3/04—Blended or other yarns or threads containing components made from different materials
    • 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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • 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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/441—Yarns or threads with antistatic, conductive or radiation-shielding properties
    • 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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/449—Yarns or threads with antibacterial properties
    • 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
    • D10B2201/02—Cotton
    • 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
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Abstract

The invention discloses a preparation method of blended multifunctional yarn, which comprises the following steps: the preparation method comprises the steps of carrying out bale arranging and mixing on Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 20-40%, the cotton fibers proportion is 20-60%, and the graphene polyester fibers proportion is 20-40%, and then carrying out multifunctional yarn preparation through spinning process flows (mainly comprising a blowing-carding process, a drawing process, a roving process, a spinning process and the like). The spinning process flow is a ring spinning production flow and comprises common ring spinning and compact spinning. Or the spinning process flow is a rotor spinning production flow. The invention provides a preparation method of multifunctional yarn with the performances of far infrared health care, ultraviolet protection, negative ion generation, antibiosis and bacteriostasis, mite inhibition, static resistance, excellent (resilience) elasticity and the like. The invention has simple process and low requirements on equipment and environment, meets the requirements of people on multifunctional health-care yarns, and conforms to the development planning of the national major health industry.

Description

Preparation method of blended multifunctional yarn
Technical Field
The invention belongs to the technical field of blended yarn preparation, and particularly relates to a preparation method of blended multifunctional yarn.
Background
The fabric functionalization is realized mainly in the following three ways: (1) is realized by an after-finishing process. The method has simple process and low cost, but the retention time of the functionality is short. (2) And adding functional master batches or functional auxiliaries in the spinning process to prepare functional fibers, and further spinning and weaving. The method has high technical difficulty and high cost. (3) The functional material is selected from the fiber material which has functionality. Such as bamboo fiber, hemp fiber, kapok fiber, etc., which have an antibacterial function.
Cotton fiber is a commonly used material that has excellent wear properties. However, after the cotton fibers absorb water, water molecules are easily accumulated in the fibers, so that the fabric is easy to wet and difficult to dry, bacteria are easy to breed, the health of a human body is influenced, meanwhile, microorganisms also have a destructive effect on the cotton fabric, which is reflected in the fact that the cotton fabric is not resistant to mold, and therefore, some methods are necessary to make up for the performance disadvantage of the cotton fabric.
The Sorona fiber has the advantages of reproducibility, soft hand feeling, lasting elasticity, shape recovery and the like; the graphene polyester fiber has the performances of antibiosis, bacteriostasis, far infrared emission, ultraviolet resistance, mite inhibition, negative ion generation, static resistance and the like.
In order to meet the increasing demands of people on health functions and further improve the wearability of the fibers, blending various fibers according to a certain proportion is a common treatment method. According to the invention, the preparation of multifunctional yarns is carried out by combining different spinning process flows according to a certain proportion of Sorona fibers, cotton fibers and graphene polyester fibers.
Disclosure of Invention
The invention relates to a preparation method of a multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers, and aims to solve the technical problem of providing a preparation method of a multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers, wherein the method comprises the following steps: the method comprises the steps of carrying out bale arranging and mixing on Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 20% -40%, the cotton fibers proportion is 20% -60%, and the graphene polyester fibers proportion is 20% -40%, and then carrying out production through a spinning process flow to obtain the blended multifunctional yarn.
The spinning process flow is a ring spinning production flow and comprises common ring spinning and compact spinning. Mainly comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
The spinning process flow is a rotor spinning production flow. Mainly comprises a blowing-carding process, a drawing process, a rotor spinning process and the like.
The multifunctional yarn mainly has excellent performances of far infrared health care, ultraviolet protection, negative ion generation, antibiosis and bacteriostasis, mite inhibition, static resistance, excellent (resilience) elasticity and the like.
Advantageous effects
(1) The invention has simple process flow, lower production cost, durable functionality and lower requirements on raw materials, equipment and environment, and can be used for large-scale production;
(2) the functional yarn prepared by the invention has excellent performances of far infrared health care, ultraviolet protection, negative ion generation, antibiosis and bacteriostasis, mite inhibition, static resistance, excellent (resilience) elasticity and the like, meets the requirements of people on multifunctional yarn, and accords with the future development direction of the yarn industry.
Drawings
FIG. 1 is a production flow chart of ring spinning;
FIG. 2 is a production flow chart of rotor spinning.
Detailed Description
In order to make the technical solution of the present invention more comprehensible, the present invention will be described in further detail with reference to the following examples.
Example 1
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 20%, the cotton fibers proportion is 60%, and the graphene polyester fibers proportion is 20%. The production is carried out through a spinning process flow. The process flow is a common ring spinning production flow and comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
Example 2
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 20%, the cotton fibers proportion is 60%, and the graphene polyester fibers proportion is 20%. The production is carried out through a spinning process flow. The process flow is a compact spinning production flow and comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
Example 3
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 20%, the cotton fibers proportion is 60%, and the graphene polyester fibers proportion is 20%. The production is carried out through a spinning process flow. The process flow is a rotor spinning production flow and comprises a blowing-carding process, a drawing process, a rotor spinning process and the like.
Example 4
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 30%, the cotton fibers proportion is 40%, and the graphene polyester fibers proportion is 30%. The production is carried out through a spinning process flow. The process flow is a common ring spinning production flow and comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
Example 5
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 30%, the cotton fibers proportion is 40%, and the graphene polyester fibers proportion is 30%. The production is carried out through a spinning process flow. The process flow is a compact spinning production flow and comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
Example 6
A preparation method of multifunctional yarn blended by bio-based synthetic fibers, cotton fibers and graphene polyester fibers comprises the following specific steps: the method comprises the following steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers proportion is 30%, the cotton fibers proportion is 40%, and the graphene polyester fibers proportion is 30%. The production is carried out through a spinning process flow. The process flow is a rotor spinning production flow and comprises a blowing-carding process, a drawing process, a rotor spinning process and the like.
The multifunctional yarns of examples 1 to 6 were each subjected to a hand test of a plain weave fabric having a fabric gauge of 10 × 10cm on a sample loom and subjected to the following tests:
1. antibacterial property
The results are shown in Table 1 by adopting the detection mode of GB/T20944.3-2008.
TABLE 1 bacteriostasis ratio (%)
Staphylococcus aureus Escherichia coli Candida albicans
Example 1 91 95 88
Example 2 92 95 88
Example 3 91 94 87
Example 4 95 97 91
Example 5 96 97 92
Example 6 95 96 91
Note: the standard requirement is that the bacteriostasis rate of the antibacterial agent to staphylococcus aureus and coliform bacteria is more than or equal to 70 percent, or the bacteriostasis rate to candida albicans is more than or equal to 60 percent.
As can be seen from Table 1, the fabrics woven in examples 1-6 all had antibacterial and bacteriostatic properties. Among them, examples 4 to 6, in which the content of the graphene polyester fiber is high, are preferred. The spinning mode has little influence on the antibacterial and bacteriostatic performance of the fabric, and the spinning mode is compact spinning (example 2 and example 5).
2. Ultraviolet protection function
The results of the test method of GB/T18830-2009 are shown in Table 2.
TABLE 2 antibacterial Properties
UPF value T(UVA)AV/％
Example 1 55 2.78
Example 2 60 2.63
Example 3 52 2.91
Example 4 85 1.97
Example 5 93 1.82
Example 6 92 2.01
Note: when UPF >40 and T (UVA) AV/% < 5%, it can be called UV-protection product.
As can be seen from Table 2, the fabrics woven in examples 1-6 all have the function of UV protection, and example 5 with a high content of graphene polyester is preferred.
3. Antistatic function
The results of the test method of GB/T12703.4-2010 are shown in Table 3.
TABLE 3 surface resistivity
Ω
Example 1 1.04×108
Example 2 1.32×108
Example 3 1.01×108
Example 4 3.71×108
Example 5 4.12×108
Example 6 2.13×108
Note: the technical requirements of surface resistivity are as follows: stage A (<1×107) Grade B (≥ 1 × 10)7，≤1×1010) Grade C (not less than 1X 10)10，≤1×1013). For non-durable antistatic textiles, the technical requirements on the surface resistivity should be met before washing, and for durable antistatic textiles, the technical requirements on the surface resistivity should be met before and after washing.
As can be seen from Table 3, the fabrics woven in examples 1-6 all had antistatic properties, with example 5 being preferred.
4. Far infrared function
The results of the test method of GB/T30127-2013 are shown in Table 4.
TABLE 4 far infrared function
Far infrared emissivity Far infrared radiation temperature rise (DEG C)
Example 1 0.92 2.1
Example 2 0.87 2.4
Example 3 0.91 2.1
Example 4 1.33 3.6
Example 5 1.32 3.4
Example 6 1.29 3.7
Note: for a general sample, if the far infrared emissivity of the sample is not lower than 0.88 and the temperature rise of far infrared radiation is not lower than 1.4 ℃, the sample has far infrared performance.
As can be seen from Table 4, the fabrics woven in examples 1 to 6 all had far infrared function, and the fabrics woven in examples 4 to 6 were preferable.
While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (4)

1. The preparation method of the blended multifunctional yarn is characterized by comprising the following steps: the preparation method comprises the steps of arranging and mixing Sorona fibers, cotton fibers and graphene polyester fibers according to a certain proportion, wherein the Sorona fibers are 20-40%, the cotton fibers are 20-60% and the graphene polyester fibers are 20-40%, and then preparing the multifunctional yarn through a spinning process flow.
2. The method for preparing blended multifunctional yarn according to claim 1, wherein the spinning process flow is a ring spinning production flow, and comprises common ring spinning and compact spinning, and mainly comprises a blowing-carding process, a drawing process, a roving process, a spinning process and the like.
3. The method for preparing the blended multifunctional yarn according to claim 1, wherein the spinning process flow is a rotor spinning production flow and mainly comprises a blowing-carding process, a drawing process, a rotor spinning process and the like.
4. The preparation method of the blended multifunctional yarn according to claim 1, wherein the multifunctional yarn mainly has the performances of far infrared health care, ultraviolet protection, negative ion generation, antibiosis and bacteriostasis, mite inhibition, static resistance, excellent (resilience) elasticity and the like.
CN202110274417.7A 2021-03-15 2021-03-15 Preparation method of blended multifunctional yarn Withdrawn CN113215700A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114293300A (en) * 2022-02-17 2022-04-08 和也健康科技有限公司 Functional composite yarn containing stone needle-nano zinc oxide-tourmaline-silicate blend and preparation method and application thereof
CN114575008A (en) * 2022-01-25 2022-06-03 魏桥纺织股份有限公司 Anti-mite submicron fiber and cotton fiber composite spinning yarn and preparation method thereof
CN114737289A (en) * 2022-05-20 2022-07-12 安徽恒益纺织科技有限公司 Conductive yarn and processing method

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103031637A (en) * 2013-01-11 2013-04-10 劲霸男装（上海）有限公司 Sorona/wool semi-worsted spinning yarn as well as manufacturing process thereof and application thereof
CN103938351A (en) * 2014-03-24 2014-07-23 江阴芗菲服饰有限公司 Sorona/combed cotton fiber blended knitting fabric
CN104831443A (en) * 2015-05-21 2015-08-12 安徽华茂纺织股份有限公司 Method for producing SORONA and cotton blended yarns through cotton spinning device
CN109423742A (en) * 2017-08-30 2019-03-05 浙江吉麻良丝新材料股份有限公司 A kind of preparation method of Sorona/ flax fiber blending fabric
CN109825926A (en) * 2019-02-27 2019-05-31 南通唐盛纺织有限公司 A kind of cotton graphene is anti-mite, antibacterial bed necessaries fabric and its preparation process
CN110373772A (en) * 2019-07-25 2019-10-25 南京怡康抗菌材料科技有限公司 A kind of antimicrobial yarn preparation method of biology base synthetic fibers and cotton blend
CN110952217A (en) * 2019-11-21 2020-04-03 广东兆天纺织科技有限公司 Moisture-absorbing and sweat-releasing knitted fabric capable of forming bamboo joint effect and production process thereof
CN111455513A (en) * 2020-04-09 2020-07-28 无锡市红博面料馆有限公司 Graphene fiber reinforced hemp and cotton multifunctional fiber blended yarn

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103031637A (en) * 2013-01-11 2013-04-10 劲霸男装（上海）有限公司 Sorona/wool semi-worsted spinning yarn as well as manufacturing process thereof and application thereof
CN103938351A (en) * 2014-03-24 2014-07-23 江阴芗菲服饰有限公司 Sorona/combed cotton fiber blended knitting fabric
CN104831443A (en) * 2015-05-21 2015-08-12 安徽华茂纺织股份有限公司 Method for producing SORONA and cotton blended yarns through cotton spinning device
CN109423742A (en) * 2017-08-30 2019-03-05 浙江吉麻良丝新材料股份有限公司 A kind of preparation method of Sorona/ flax fiber blending fabric
CN109825926A (en) * 2019-02-27 2019-05-31 南通唐盛纺织有限公司 A kind of cotton graphene is anti-mite, antibacterial bed necessaries fabric and its preparation process
CN110373772A (en) * 2019-07-25 2019-10-25 南京怡康抗菌材料科技有限公司 A kind of antimicrobial yarn preparation method of biology base synthetic fibers and cotton blend
CN110952217A (en) * 2019-11-21 2020-04-03 广东兆天纺织科技有限公司 Moisture-absorbing and sweat-releasing knitted fabric capable of forming bamboo joint effect and production process thereof
CN111455513A (en) * 2020-04-09 2020-07-28 无锡市红博面料馆有限公司 Graphene fiber reinforced hemp and cotton multifunctional fiber blended yarn

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114575008A (en) * 2022-01-25 2022-06-03 魏桥纺织股份有限公司 Anti-mite submicron fiber and cotton fiber composite spinning yarn and preparation method thereof
CN114293300A (en) * 2022-02-17 2022-04-08 和也健康科技有限公司 Functional composite yarn containing stone needle-nano zinc oxide-tourmaline-silicate blend and preparation method and application thereof
CN114737289A (en) * 2022-05-20 2022-07-12 安徽恒益纺织科技有限公司 Conductive yarn and processing method
CN114737289B (en) * 2022-05-20 2023-08-04 安徽恒益智能科技股份有限公司 Conductive yarn and processing method

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