WO2020222244A1 - A fabric having recycled ring spun yarn(s) and ring spinning method for manufacturing the yarn - Google Patents

A fabric having recycled ring spun yarn(s) and ring spinning method for manufacturing the yarn Download PDF

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Publication number
WO2020222244A1
WO2020222244A1 PCT/IN2019/050768 IN2019050768W WO2020222244A1 WO 2020222244 A1 WO2020222244 A1 WO 2020222244A1 IN 2019050768 W IN2019050768 W IN 2019050768W WO 2020222244 A1 WO2020222244 A1 WO 2020222244A1
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WIPO (PCT)
Prior art keywords
fibers
recycled
yarn
fabric
ring spun
Prior art date
Application number
PCT/IN2019/050768
Other languages
French (fr)
Inventor
Darshil Khamar
Debasish Halder
Rahul Roy
Original Assignee
Arvind Limited
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
Priority to IN201921017518 priority Critical
Priority to IN201921017518A priority patent/IN201921017518A/en
Application filed by Arvind Limited filed Critical Arvind Limited
Publication of WO2020222244A1 publication Critical patent/WO2020222244A1/en

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Classifications

    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • DTEXTILES; PAPER
    • D02YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02GCRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/04Blended or other yarns or threads containing components made from different materials
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/54Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads coloured
    • DTEXTILES; PAPER
    • D03WEAVING
    • D03DWOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/50Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads
    • D03D15/56Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the properties of the yarns or threads elastic
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2201/00Cellulose-based fibres, e.g. vegetable fibres
    • D10B2201/01Natural vegetable fibres
    • D10B2201/02Cotton
    • DTEXTILES; PAPER
    • D10INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10BINDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/10Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyurethanes

Abstract

The present disclosure envisages a fabric comprising recycled fibers between 25% to 70% w/w of the fabric. The fabric comprises at least one recycled ring spun yarn having recycled fibers at least 25 % w/w of the recycled yarn. The present disclosure further envisages a ring spinning process for manufacturing a yarn having recycled fibers. The process includes a step of simultaneously drafting at least two roving in a spinning frame machine and condensing the drafted fibers to obtain a recycled yarn. At least one of the rovings or each roving comprises recycled fibers so as to provide the recycled yarn having recycled fibers at least 25% w/w of the yarn and tenacity more than 13 cN/Tex. The length of each recycled fiber is at least 15 mm.

Description

A FABRIC HAVING RECYCLED RING SPUN YARN(S) AND RING SPINNING METHOD FOR MANUFACTURING THE YARN
TECHNICAL FIELD OF THE INVENTION
The present invention relates to the field of fabrics having recycled yarns and spinning processes for manufacturing the recycled yams.
BACKGROUND OF THE INVENTION
Demand for Sustainable products in textile industry including denim industry is growing because of limited availability of natural fibers, shortage of natural resources and concerns related to environmental pollution. Cellulosic fibers have achieved a pivotal position in the Textile industry as they are strong and recyclable. The demand of the cellulosic fibers, such as cotton is increasing day by day as a fabric made from these fibers is more comfortable as compared to fabrics made of any other fibers. On the other hand, disposal of used cloth has become a cumbersome task and may pose an environmental hazard if not disposed properly. To fulfill the demand and to address problem of disposal of used cloths, a fabric is woven using yarns having recycled fibers and virgin fibers. In order to make a fabric, the recycled fibers and virgin fibers are blended together during yam manufacturing process to get yams known as recycled yarns for manufacturing sustainable products.
The recycled natural fibers are obtained from the used clothes having cellulosic fiber content. The process of obtaining recycled fibers includes collecting used cloths from various places for recycling. During recycling process, the collected clothes are cut into small pieces and shredded into fibers. It is observed that the recycled fibers are always uneven in length, and also, the length of these recycled fibers is comparatively smaller.
Presently, an open-end spinning process is used for making yams from recycled fibers. In order to make recycled yams by open end spinning process, generally virgin fibers are mixed with the recycled fibers in such a way that there is homogeneous blend of the virgin fibers and the recycled fibers. However, there are many documents and patents are available that are disclosing use of recycled fibers up to 100% in the open end spinning to manufacture the recycled yarn by the open-end spinning. However, it is observed that the aesthetic of a fabric made from the recycled yams obtained from the open-end spinning are compromised and it is observed that the fabric has poor tensile properties.
Another yarn spinning process is known as a ring spinning process. It is very well known that ring spinning process provides higher tensile strength as well as it gives clean aesthetic look to a fabric. Thus, it is advisable to use ring spun yams during fabric manufacturing process. However, the existing ring-spinning process has limitation on increasing recycle fiber content. It is observed that if the amount of the recycled fibers is increased beyond 25%, the strength of yarn produced deteriorates which results in poor quality of the fabric. Frequent yam breakage is observed during the yam/fabric manufacturing process which lowers the efficiency of the process.
Hence, there is a need of a ring-spinning process which facilitates use of recycled fibers in a yam, and therefore, in a fabric, and alleviates the aforementioned drawbacks of existing manufacturing processes or provides at least an alternative.
SUMMARY OF THE INVENTION
The present disclosure envisages a fabric comprising recycled fibers between 25% to 70% w/w of the fabric. The fabric comprises at least one recycled ring spun yarn having recycled fibers at least 25% w/w of the recycled yarn.
The present disclosure further envisages a ring spun recycled yam comprising recycled fibers at least 25% w/w of the recycled yarn with a tenacity more than 13 cN/Tex.
The present disclosure further envisages a ring spinning process of manufacturing a yarn having recycled fibers. The process comprises the step of drafting at least two roving simultaneously in a spinning frame machine and condensing the drafted fibers to obtain a recycled yarn. At least one of the rovings or each roving comprises recycled fibers so as to provide the recycled yam having recycled fibers at least 25% w/w of the recycled yarn and tenacity more than 13 cN/Tex.
BRIEF DESCRIPTION OF ACCOMPANYING DRAWING
Figure 1 illustrates a schematic diagram of a ring spinning machine illustrating simultaneous drafting of two rovings in a drafting unit.
DETAILED DESCRIPTION OF THE INVENTION
Although specific terms are used in the following description for sake of clarity, these terms are intended to refer only to particular structure of the invention, and are not intended to define or limit the scope of the invention.
References in the specification to“an embodiment” mean that a particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in an embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
The present invention relates to a ring spinning process of manufacturing a yarn having recycled fibers and a fabric made of recycled yarn.
The ring spinning process, of the present invention, facilitates use of recycled fibers with virgin/natural fibers to make a ring spun yarn containing recycled fibers at least 25% w/w of the ring spun yarn. The steps of the process are elaborated in subsequent paragraphs.
Recycled fibers to be used in a yarn manufacturing process can be obtained from either pre-consumer or post-consumer fabric, garment or yam waste. The garment/fabric so obtained is cut into small pieces. The pieces are then shredded into fibers. In an embodiment, the recycled fibers include natural fibers, i.e., cotton fibers and/or bast fibers. These recycled fibers are then blended with virgin fibers in a blow room process. In an embodiment, the virgin fibers include natural fibers, man-made fibers or combination thereof.
The blow room process is carried out to obtain a homogeneous blend of recycled and virgin fibers.
In blow room process, fibers are homogenously blended and cleaned. These fibers are fed to a card unit through a chute feed system.
In the carding process, the fibers are cleaned, disentangled and intermixed to obtain slivers containing recycled and virgin fibers. The setting and speed of carding element of the machine is adjusted such a way that recycled fibers, which are shorter in lengths, can be processed smoothly.
The slivers so obtained are subjected to draw frame process. In the draw frame process, the fibers are drafted by passing the slivers through a series of rollers. Each roller rotates faster than the previous roller. The obtained sliver has fibers which are well blended and leveled.
After draw frame process, the slivers are subjected to roving frame process. In the roving frame process, the slivers are converted into roving.
Each roving has a hank value ranging from 0.6-1. In an embodiment, the hank value of the rovings is 0.75.
The ring spinning process includes the step of drafting at least two roving simultaneously in a spinning frame machine and condensing the drafted fibers to obtain a recycled ring spun yarn more specifically, in the drafting zone, two roving are simultaneously fed in a single drafting unit to obtain a yam. In an embodiment, two rovings are drafted simultaneously. Figure 1 illustrates a schematic view of a ring spinning machine (150) illustrating the aforementioned process step in a drafting unit (130). Two rovings (110, 120) are initially passed through a back drafting roller (140). Further, they are passed through a middle drafting roller (170). The middle drafting roller (170) is provided with an apron. Further, the rovings (110, 120) are passed through a front drafting roller (180). After front drafting roller, the fibers are converted into yarn and wound on a bobbin (190). The roving stop motion is used, which prevent faulty yam generation. In an embodiment, the drafting system used is a spring loaded drafting system. The yarn has a twist multiplier value ranges from 2.5 - 5.0.
During drafting, the ring frame machine speed is reduced by 10%. More specifically, the rovings are drafted at reduced speed as compared to the regular speed. In an embodiment, the rovings are drafted at speed 10% lower than the regular speed. For example, for manufacturing a 10s Ne yarn in an existing machine, the speed of machine is approximately 10000 rpm, whereas, in the present invention, speed of machine is 9000 rpm, i.e., 10% lower than the regular speed.
At least one of the rovings or each roving comprises recycled fibers so as to provide the recycled yarn having recycled fibers at least 25% w/w of the recycled yarn. In an embodiment, each roving has recycled fibers and virgin fibers or one of the rovings comprises virgin fibers only. The weight of the recycled fibers in the rovings is adjusted so as to get a yarn having recycled fibers at least 25% w/w of that yarn. In another embodiment, one roving has recycled fibers and virgin fibers, whereas other roving has only virgin fibers. The weight of the recycled fibers in the roving is adjusted so as to get a yarn having recycled fibers at least 25% w/w of that yarn.
In an embodiment, the recycled fibers in the recycled yam ranges from 25% to 70% w/w of the yam. The recycled fibers in the roving(s) varies from 25% to 70% w/w of the yarn to be manufactured and the virgin fibers in the rovings varies from 30% to 75% w/w of the yarn to be manufactured.
In an embodiment, the rovings have recycled fibers 40% w/w of the yarn to be manufactured and virgin fibers 60% w/w of the yarn to be manufactured.
In another embodiment, the rovings can have recycled fibers up to 70% w/w of the yarn to be manufactured. This scenario is typically observed in cotton yam manufacturing process.
The virgin fibers in the rovings can be natural fibers and/or manmade fibers. Subsequent to drafting two rovings simultaneously in the ring spinning machine (150), the fibers obtained are condensed to obtain a ring spun yam.
Simultaneous drafting of two rovings increases the strength of the yarn, and reduces frequent yarn breakage by reducing the amount of fiber protruding from the yarn. Further, simultaneous feeding of two rovings increases the homogeneity of the yarn.
The recycled fibers in the roving include cotton fibers and/or bast fibers having length at least 15 mm.
The rovings are twisted individually as well as twisted together. More specifically, the two rovings are drafted together in the drafting zone and twisted individually as well as together after the drafting zone and then the resultant yam is wound on to the bobbin (190). This results in improved yarn tenacity and reduced variation in yarn strength. Thus, yarn can perform well with comparatively lower yam tenacity. Further a fabric made of the yarn manufactured by the process of the present disclosure has better hand feel and improved strength. The ring spun yarn obtained from the process of the present invention has tenacity more than 13 cN/Tex.
The yarn, thus obtained has good strength as compared to yam obtained using conventional processes. Following table depicts a comparison between strength of a yarn of the present disclosure obtained by the aforementioned process and a yarn obtained by a conventional process.
Table - 1
Figure imgf000009_0001
In the aforementioned table, C.S.P. (Count Strength Product) refers to a product of English count and strength of yam in pound. High C.S.P. corresponds to high strength of the yarn. From the Table-1, it is evident that the yam obtained by the process of the present disclosure has better C.S.P. and tenacity as compared to yarn having same recycled fiber content obtained from conventional processes. High C.S.P. and high tenacity results in higher strength of the yam. Thus, the yam has better strength than the yarn obtained in conventional processes.
The present disclosure further envisages a yam obtained by a ring spinning process. The yarn is a ring spun yarn, and has recycled fibers at least 25% w/w of the yarn. In an embodiment, the yarn comprises recycled fibers more than 25% w/w of the recycled yam. The recycled fibers in the ring spun yarn ranges from 25% to 70% w/w of the yarn, whereas the virgin fibers in the yam ranges from 30% to 75% w/w of the yarn. The virgin fibers in the yam can be natural fibers and/or manmade fibers.
In an embodiment, the recycled fibers in the ring spun yam include recycled cotton fibers and/or bast fibers, and the length of the recycled fibers is at least 15 mm.
In another embodiment, the single yarn count of the ring spun yam ranges from 4s Ne to 60s Ne. in yet another embodiment, the single yarn count of the ring spun yarn ranges from 6s Ne to 20s Ne.
The ring spun yarn shows good tensile properties.
The yarn is used for fabric manufacturing process such as dyeing, weaving and finishing. In an embodiment, the yam is undyed. In another embodiment, the ring spun yarn is dyed with oxidative class of dyes, reactive dyes, vat dye, pigment and/or any other textile class of dyes etc. The dyed or un-dyed yams are subjected to weaving process to obtain a woven fabric. In an embodiment, the yarn is dyed with Indigo dye. The yarn can be used as warp yarn or weft yarn or both.
The present disclosure further envisages a fabric. The fabric comprises recycled fibers between 25% - 70% w/w of fabric and virgin fibers between 30% to 75% w/w of the fabric. The fabric comprises at least one recycled ring spun yarn having recycled fibers at least 25% w/w of the recycled yarn. In an embodiment, the yam comprises recycled fibers more than 25% w/w of the recycled yam.
The fabric, which is woven using the yam of the present disclosure, undergoes finishing process to achieve aesthetic look as well as required parameters. The required parameters include stretch, growth, shrinkage, weight, tensile properties etc. The fabric has a weight range from 4 - 20 Ounce/square yard. In an embodiment of the present invention, the weight of the fabric ranges from 8-15 Ounce/square yard. The fabric can be a woven or knitted fabric. The woven/knitted fabric can contain elastane. The fabric has recycled fibers at least 25% w/w of the fabric and virgin fibers at least 30% w/w of the fabric. The content of the recycled fibers in the fabric varies from 25% to 70% w/w of the fabric and content of the virgin fibers in the fabric varies from 30% to 75% w/w of the fabric.
In an embodiment, the recycled fibers in the fabric include natural fibers including recycled cotton fibers and/or bast fibers having length at least 15 mm. Further, the virgin fibers in the fabric include natural or manmade fibers. The virgin fibers comprise cotton, tencel, viscose, and/or elastane fibers.
The fabric comprises recycled yarn used as warp or weft or both.
The fabric can be woven in various types such as plain weave, twill weave, dobby weave, satin/sateen weave, jacquard etc. Further, the fabric can be knitted in various types such as circular knitted, plated, seamless, warp knit etc.
The yarn count of the fabric ranges from 4s Ne to 60s Ne.
The fabric can be dyed or un-dyed. In an embodiment, the fabric is dyed with an Indigo dye, a vat dye, a reactive dye, a pigment dye or oxidative class of dyes.
The present disclosure further envisages a garment manufactured by the aforementioned fabric having recycled fibers having at least 25% w/w of the fabric and remaining virgin fibers. The fabric of the garment has weight ranging from 8-15 Ounce/square yard. Following are few examples of fabric made by yams manufactured by the process of the present disclosure.
1. Non-stretch fabric having yarns manufactured by the process of the present disclosure. The fabric has following particulars.
Figure imgf000012_0001
2. Stretchable fabric having yarns manufactured by the process of the present disclosure. The fabric has following particulars.
Figure imgf000012_0002
disclosure. The fabric has following particulars.
Figure imgf000012_0003
The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, to thereby enable others, skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omission and substitutions of equivalents are contemplated as circumstance may suggest or render expedient, but such are intended to cover the application or implementation without departing from the spirit or scope of the present invention.

Claims

Claims :
1. A fabric having recycled fibers content between 25% to 70% w/w of the fabric, said fabric comprising at least one recycled ring spun yam having recycled fibers at least 25 % w/w of the recycled yam.
2. The fabric as claimed in claim 1, wherein the recycled fibers include natural fibers.
3. The fabric as claimed in claim 2, wherein the natural fibers include cotton fiber and/or bast fiber.
4. The fabric as claimed in claim 1, wherein the virgin fibers include natural fibers and/or manmade fibers.
5. The fabric as claimed in any one of the preceding claims 1 - 4, wherein the virgin fibers comprise cotton, tencel, viscose, and/or elastane fibers.
6. The fabric as claimed in claim 1, wherein the weight of the fabric ranges from 4 - 20 ounce/square yard.
7. The fabric as claimed in claim 1, wherein said fabric has recycled ring spun yarn used as warp or weft or both.
8. The fabric as claimed in claim 7, wherein the recycled ring spun yarn has a yam count ranging from 4 Ne - 60 Ne.
9. The fabric as claimed in claim 1, wherein the fabric is dyed with an indigo dye, sulphur dye, vat dye, reactive dye, a pigment dye or oxidative class of dyes.
10. The fabric as claimed in claim 1, wherein fabric is woven or knitted.
11. A garment made of the fabric as claimed in claims 1 -10.
12. A ring spun recycled yam comprising recycled fibers at least 25% w/w of the recycled yarn with a tenacity at least 13 cN/Tex.
13. The ring spun recycled yarn as claimed in claim 12, wherein the content of said recycled fibers in said ring spun recycled yarn ranges from 25% to 70% w/w of the ring spun yarn, and the content of virgin fibers in said yarn varies from 30% to 75% w/w of the ring spun yarn.
14. The ring spun recycled yarn as claimed in any of the claim 12 or 13, wherein the recycled fibers in said yarn include recycled cotton fibers and/or bast fibers having length at least 15 mm, and said virgin fibers include natural or manmade fibers.
15. The ring spun recycled yarn as claimed in any one of the preceding claims 12-14, wherein the yarn count of said ring spun yam ranges from 4s Ne to 60s Ne.
16. The yam as claimed in any one of the preceding claims 12-15, wherein said ring spun yarn is dyed with an Indigo dye, a vat dye, a reactive dye, a pigment dye or oxidative class of dyes.
17. A ring spinning process of manufacturing a ring spun yarn having recycled fibers, said process comprising the step of: drafting at least two roving simultaneously in a spinning frame machine; and condensing the drafted fibers to obtain a recycled ring spun yam; wherein at least one of said rovings or each roving comprises recycled fibers so as to provide the recycled ring spun yam having at least 25% w/w recycled fibers and tenacity more than 13 cN/Tex.
18. The process as claimed in claim 17, wherein the recycled fibers in the recycled ring spun yarn ranges from 25% to 70% w/w of the yarn.
19. The process as claimed in claim 17, wherein each of said roving has recycled fibers and virgin fibers or one of the roving comprises virgin fibers only.
20. The process as claimed in claim 17, wherein the recycled fibers in said roving include cotton fibers and/or bast fibers having length at least 15 mm.
21. The process as claimed in claim 17, wherein the roving are drafted at reduced speed about 10% lower than the regular speed.
PCT/IN2019/050768 2019-05-02 2019-10-16 A fabric having recycled ring spun yarn(s) and ring spinning method for manufacturing the yarn WO2020222244A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021117060A1 (en) * 2019-12-09 2021-06-17 Arvind Limited Method of manufacturing fabric from cellulosic based recycled fibre and garment thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331801A (en) * 1992-01-24 1994-07-26 Eco Fibre Canada Inc. Recycled yarns from textile waste and the manufacturing process therefor
US20160002829A1 (en) * 2010-04-12 2016-01-07 Paradigm One, Llc Processes for using recycled waste cotton material in producing a textile product and textile products produced from waste cotton material
US20180305847A1 (en) * 2017-04-25 2018-10-25 Long John Tsung Right Industrial Co., Ltd. Recycled fabric structure, knitted vamp cloth and method of manufacturing yarn

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331801A (en) * 1992-01-24 1994-07-26 Eco Fibre Canada Inc. Recycled yarns from textile waste and the manufacturing process therefor
US20160002829A1 (en) * 2010-04-12 2016-01-07 Paradigm One, Llc Processes for using recycled waste cotton material in producing a textile product and textile products produced from waste cotton material
US20180305847A1 (en) * 2017-04-25 2018-10-25 Long John Tsung Right Industrial Co., Ltd. Recycled fabric structure, knitted vamp cloth and method of manufacturing yarn

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