CN112267179A - Textile yarn disassembling method - Google Patents

Textile yarn disassembling method Download PDF

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Publication number
CN112267179A
CN112267179A CN202011085460.0A CN202011085460A CN112267179A CN 112267179 A CN112267179 A CN 112267179A CN 202011085460 A CN202011085460 A CN 202011085460A CN 112267179 A CN112267179 A CN 112267179A
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CN
China
Prior art keywords
yarn
yarns
edge
length
clamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011085460.0A
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Chinese (zh)
Inventor
杨恩龙
史晶晶
易洪雷
韩万里
武鲜艳
谢胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiaxing University
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Jiaxing University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiaxing University filed Critical Jiaxing University
Priority to CN202011085460.0A priority Critical patent/CN112267179A/en
Publication of CN112267179A publication Critical patent/CN112267179A/en
Pending legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G11/00Disintegrating fibre-containing articles to obtain fibres for re-use
    • D01G11/04Opening rags to obtain fibres for re-use
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/66Disintegrating fibre-containing textile articles to obtain fibres for re-use

Abstract

The invention discloses a method for disassembling waste textile yarns, which comprises the following steps: the sewing thread part or the cloth edge part of the fabric is cut off and cut into a rectangular cloth piece. The three sides are firmly clamped by the clamps, one yarn at the edge of the fourth side is clamped by one clamp, the yarn is detached and placed into the negative pressure air suction pipeline, high-speed rotating airflow is arranged in the negative pressure air suction pipeline, the rotating direction of the airflow is opposite to the twisting direction of the yarn, and the airflow straightens the yarn and untwists the yarn into single fibers. Repeating the steps until the warp yarns and the weft yarns are all untwisted. The provided disassembling method has the advantages that the loss of the strength and the length of the fiber in the disassembling process is small, and the retention rate of the strength and the length of the fiber is more than 94 percent.

Description

Textile yarn disassembling method
Technical Field
The invention relates to the technical field of textiles, in particular to a textile yarn disassembling method.
Background
With the increasing world population and the increasing living standard of people, the application field of textile is gradually expanded, the world fiber yield is gradually improved, and obviously the global textile waste yield is greatly increased.
At present, the treatment modes of the waste textiles are mainly divided into three types: the first is as second-hand clothing to be sold or donated to poverty-stricken groups; second, regeneration recovery, including physical regeneration recovery and chemical regeneration recovery; thirdly, burning and burying. The proportion of the first and the second is not high, and the majority is the third; in the recycling process, the single material products such as pure cotton and the like are recycled, the recycling of the blended products is difficult to realize, most knitted fabrics and woven fabrics are difficult to be loosened, and the prior art mostly adopts a method of cutting or shearing by a knife to be loosened, but the strength and the length of fibers in the fabrics are lost.
Therefore, how to provide a textile dismantling method with small loss of fiber strength and fiber length in the dismantling process is a technical problem which needs to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a textile yarn disassembling method, which is characterized in that selvages of a fabric are cut off, then the yarns are disassembled one by one, and fibers in each yarn are disassembled under the action of rotating air flow, so that new yarns are processed in a subsequent process, and the purpose of saving resources is achieved. The method has the advantages that the loss of the strength and the length of the fiber in the disassembling process is small, and the retention rate of the strength and the length of the fiber is more than 94 percent.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of dismantling textile yarns, comprising the steps of:
(1) picking up waste cotton textiles, cutting off sewing thread parts or selvedge parts, and cutting into rectangular cloth pieces;
(2) disassembling: vertically placing the cloth block, fixing the top edge and two side edges of the cloth block, clamping a weft yarn on the outermost side of the edge of the bottom edge, drawing the weft yarn downwards, feeding the weft yarn into a negative pressure air suction pipeline, finishing straightening and untwisting operations on the weft yarn until the bottom edge exposes a warp yarn end, clamping the warp yarn end, and simultaneously releasing the fixation of the two side edges;
(3) and (3) repeating the step (2) until all the weft yarns are drawn out, then releasing the clamping of the ends of the warp yarns, clamping the warp yarns one by one, feeding the warp yarns into a negative pressure air suction pipeline, finishing straightening and untwisting operations until all the warp yarns are drawn out, and finishing the disassembly.
Preferably, in the step (1), the picking is to pick out plain woven fabrics, twill woven fabrics and satin woven fabrics in the waste textiles.
Preferably, in the step (2), the length of the clamp for fixing the top edge of the cloth piece is matched with the length of the top edge of the cloth piece so as to clamp the fixed edge; the length of the clamp used for fixing the two sides of the cloth piece is less than the side length of the side of the cloth piece, so that the yarn at the lower edge of the cloth piece can be drawn out.
Preferably, the gripper in step (2) is used to grip the exposed ends of the warp yarns so that there is no substantial bending of the ends of the warp yarns and no knot is formed between the ends of the warp yarns, and the two grippers on either side are removed to draw and untwist all the weft yarns one by one from the cloth.
Preferably, in the steps (2) and (3), the negative pressure air suction pipeline is internally provided with high-speed rotating airflow, the rotating direction of the airflow is opposite to the twisting direction of the warp yarns or the weft yarns, the rotating airflow straightens each yarn and breaks down fibers in the yarns, the breaking force has soft effect on the fibers, and the loss of the fiber strength and the length is small.
Preferably, the clamps for fixing the cloth pieces are all pneumatic wide clamps; the clamps clamp the fabric, and the fabric is properly tensioned, so that the fabric is kept straight and not tensioned too tightly, and the four clamps can conveniently draw out the weft yarns one by one.
According to the technical scheme, compared with the prior art, the invention discloses the method for disassembling the yarns of the textile with the woven structure.
The method has the advantages that the yarns in the woven fabric are firstly torn down one by one in the process of dismantling, then each yarn is untwisted by air flow, the method for dismantling the yarns cannot cut off fibers, the loss of the strength and the length of the fibers is small, and the retention rate of the strength and the length of the fibers is over 94 percent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of the waste textile product and the holder according to the present invention;
FIG. 2 is a schematic view of the air untwisting apparatus of the present invention.
Wherein, in the figure:
11-warp yarns; 12-the weft yarn; 21-clamp one; 22-a second clamp; 23-clamp III; 24-clamp four; 25-clamp five; 3-negative pressure aspiration channel; 31-an air inlet; 321-a first air outlet; 322-outlet two; 4-Z twisted yarn.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method of dismantling textile yarns, comprising the steps of:
(1) the waste cotton textiles with the same color as the raw materials and the plain weave structure are picked out, the sewing thread part or the selvedge part of the textiles are cut off, and the textiles are cut into a piece of cloth with the size of 80cm multiplied by 50 cm. The length of the cloth piece is 50cm in the warp direction and 80cm in the weft direction.
(2) And clamping one edge with the length of 80cm by using a first clamp with the length of 80cm, and clamping the cloth edge in the first clamp completely, wherein the clamping length of the cloth edge is 0.4 cm. Two 30cm long clamps II and three clamps are respectively used for clamping two side edges of the cloth. The first clamp, the second clamp and the third clamp the cloth piece on a vertical plane, wherein the first clamp is positioned at the top edge, and the clamping opening is horizontal; the distance between the bottom of the edge clamped by the second clamp and the third clamp and the bottom edge of the clamped cloth piece is 1 cm. And clamping one weft yarn on the outermost side of the lowermost edge of the cloth by using a 0.4cm long clamp four, and drawing the weft yarn out of the fabric along the downward direction of the plane of the fabric. The extracted weft yarn is Z twisted yarn, and is fed into a negative pressure air suction pipeline at the speed of 2m/min, high-speed rotating airflow is arranged in the negative pressure air suction pipeline, and the rotating direction of the airflow is anticlockwise when viewed from an inlet; the rotary negative pressure air suction airflow straightens the yarns on one hand, untwists the yarns into single cotton fibers on the other hand, the untwisting operation is repeated until weft yarns with the width of 0.8cm are drawn out from the cloth with the distance of 1cm between the bottom of the edge clamped by the second clamp or the third clamp and the bottom end of the cloth, the exposed warp yarn ends after the weft yarns are drawn out are clamped by the fifth clamp (with the length of 80cm), the exposed warp yarn ends are not bent greatly due to the small tension (1.5N) of the exposed warp yarn ends, and the warp yarn ends cannot be knotted. Removing the second clamp and the third clamp;
(3) and (3) repeating the untwisting operation in the step (2) until the fourth clamp draws off all the weft yarns one by one from the warp yarns and untwists all the weft yarns, removing the fifth clamp, clamping the warp yarns one by the fourth clamp, and feeding the warp yarns into a negative pressure suction pipe for untwisting to obtain the cotton fibers. And collecting the untwisted cotton fibers to prepare new yarns and fabrics.
The fiber strength in the waste textile and the yarn prepared by the embodiment method is tested by adopting the fiber monofilament tensile strength test standard ISO 11566 and 1996, and the strength of the fiber in the yarn prepared by the method is 94.8% of the strength of the fiber in the waste textile.
The GB T6098-once 2018 cotton fiber length test method is adopted to test the mass weighted average length of the fibers in the waste textiles and the yarns prepared by the method, and the length of the fibers in the yarns prepared by the method is 96.9% of the length of the fibers in the waste textiles.
Example 2
A method of dismantling textile yarns, comprising the steps of:
(1) waste polyester textiles with twill weave structures and the same color as the raw materials are picked out, the sewing thread part or the selvedge part of the textiles are cut off, and the textiles are cut into pieces of 90cm multiplied by 60 cm. The length of the cloth piece is 60cm in the warp direction and 90cm in the weft direction.
(2) And clamping one edge of the cloth piece with the length of 90cm by using a first clamp with the length of 90cm, and clamping the cloth edge in the first clamp completely, wherein the clamping length of the cloth edge is 0.3 cm. Two 40cm long clamps II and three clamps are respectively used for clamping two side edges of the cloth. The first clamp, the second clamp and the third clamp the cloth piece on a vertical plane, wherein the first clamp is positioned at the top edge, and the clamping opening is horizontal; the distance between the bottom of the edge clamped by the second clamp and the third clamp and the bottom end of the clamped cloth piece is 1.2 cm. And clamping one weft yarn on the outermost side of the lowermost edge of the cloth by using a 0.3cm long clamp four, and drawing the weft yarn out of the fabric along the downward direction of the plane of the fabric. The extracted weft yarns are S twisted yarns, and are fed into a negative pressure air suction pipeline at the speed of 2.5m/min, high-speed rotating airflow is arranged in the negative pressure air suction pipeline, and the rotating direction of the airflow is anticlockwise when viewed from an inlet; rotating negative pressure air suction airflow to straighten the yarn and untwist the yarn into cotton single fiber; and repeating the untwisting operation until weft yarns with the width of 1cm in the cloth are drawn out from the bottom of the edge clamped by the second clamp or the third clamp at a distance of 1.2cm from the bottom end of the cloth, and clamping the exposed warp yarn ends by using a fifth clamp (with the length of 90cm), wherein the fifth clamp applies small tension (2N) to the exposed warp yarn ends to ensure that the warp yarn ends are not bent greatly and the warp yarn ends are not knotted. Removing the second clamp and the third clamp;
(3) and (3) repeating the untwisting operation in the step (2) until the fourth clamp draws off all the weft yarns one by one from the warp yarns and untwists all the weft yarns, removing the fifth clamp, clamping the warp yarns one by the fourth clamp, and feeding the warp yarns into a negative pressure air suction pipe for untwisting to obtain the polyester fibers. And collecting the untwisted polyester fibers to prepare new yarns and fabrics.
The fiber strength in the waste textiles and the fibers in the yarns prepared by the method are tested by adopting the fiber monofilament tensile strength test standard ISO 11566 and 1996, and the strength of the fibers in the yarns prepared by the method is 95.5% of the strength of the fibers in the waste textiles.
The method for testing the length of the cotton fiber of GB T6098-2018 is adopted to test the mass weighted average length of the fiber in the waste textile and the yarn prepared by the method, and the length of the fiber in the yarn prepared by the method is 97.4% of the length of the fiber in the waste textile.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (4)

1. A textile yarn dismantling method is characterized by comprising the following steps:
(1) picking up waste textile fabrics, cutting off sewing thread parts or selvedge parts, and cutting into rectangular cloth pieces;
(2) disassembling: vertically placing the cloth block, fixing the top edge and two side edges of the cloth block, clamping a weft yarn on the outermost side of the edge of the bottom edge, drawing the weft yarn downwards, feeding the weft yarn into a negative pressure air suction pipeline, finishing straightening and untwisting operations on the weft yarn until the bottom edge exposes a warp yarn end, clamping the warp yarn end, and simultaneously releasing the fixation of the two side edges;
(3) and (3) repeating the step (2) until all the weft yarns are drawn out, then releasing the clamping of the ends of the warp yarns, feeding the warp yarns into a negative pressure air suction pipeline one by one, finishing straightening and untwisting operations until all the warp yarns are drawn out, and finishing the disassembly.
2. The textile yarn dismantling method as claimed in claim 1, wherein in step (1), said picking is to pick out plain weave, twill weave and satin weave of waste textile.
3. A textile yarn dismantling method as claimed in claim 1, wherein in step (2), the length of the clamp for fixing the top edge of the cloth piece is matched with the length of the top edge of the cloth piece;
the length of the clamp used for fixing the two sides of the cloth piece is less than the side length of the side of the cloth piece.
4. A method for dismantling textile yarns according to claim 1, wherein in steps (2) and (3), the negative pressure air suction duct is provided with a high speed rotating air flow, and the direction of the air flow rotation is opposite to the twisting direction of the warp yarns or the weft yarns.
CN202011085460.0A 2020-10-12 2020-10-12 Textile yarn disassembling method Pending CN112267179A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011085460.0A CN112267179A (en) 2020-10-12 2020-10-12 Textile yarn disassembling method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011085460.0A CN112267179A (en) 2020-10-12 2020-10-12 Textile yarn disassembling method

Publications (1)

Publication Number Publication Date
CN112267179A true CN112267179A (en) 2021-01-26

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Country Status (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201358332Y (en) * 2009-02-20 2009-12-09 徐冬琴 Roving untwister
CN209651603U (en) * 2019-01-18 2019-11-19 上海恋轩实业有限公司 A kind of automation installing line device lived again for silk thread
CN111501140A (en) * 2019-01-31 2020-08-07 精工爱普生株式会社 Separation device and fibrous body stacking device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201358332Y (en) * 2009-02-20 2009-12-09 徐冬琴 Roving untwister
CN209651603U (en) * 2019-01-18 2019-11-19 上海恋轩实业有限公司 A kind of automation installing line device lived again for silk thread
CN111501140A (en) * 2019-01-31 2020-08-07 精工爱普生株式会社 Separation device and fibrous body stacking device

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
张海霞等: "《纺织材料学实验》", 30 June 2015, 东华大学出版社 *
田树信等: "《灯芯绒、平绒织物生产技术(上册)》", 31 May 1987, 纺织工业出版社 *

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