EP4163399A1 - Lederfaser für lederspinngarn mit verbesserten physikalischen eigenschaften - Google Patents

Lederfaser für lederspinngarn mit verbesserten physikalischen eigenschaften Download PDF

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Publication number
EP4163399A1
EP4163399A1 EP21820078.0A EP21820078A EP4163399A1 EP 4163399 A1 EP4163399 A1 EP 4163399A1 EP 21820078 A EP21820078 A EP 21820078A EP 4163399 A1 EP4163399 A1 EP 4163399A1
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EP
European Patent Office
Prior art keywords
leather
fibers
spun yarn
fiber
physical properties
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.)
Withdrawn
Application number
EP21820078.0A
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English (en)
French (fr)
Other versions
EP4163399A4 (de
Inventor
Ji Eon Kim
Bong Jin Choi
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.)
Atko Planning Inc
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Atko Planning Inc
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 Atko Planning Inc filed Critical Atko Planning Inc
Publication of EP4163399A1 publication Critical patent/EP4163399A1/de
Publication of EP4163399A4 publication Critical patent/EP4163399A4/de
Withdrawn legal-status Critical Current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
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/10—Yarns or threads formed from collagenous materials, e.g. catgut
    • 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
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • 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
    • D10B2211/00—Protein-based fibres, e.g. animal fibres
    • D10B2211/01—Natural animal fibres, e.g. keratin fibres
    • D10B2211/06—Collagen fibres

Definitions

  • the present invention relates to leather spun yarn with improved physical properties, and more particularly, to leather spun yarn with improved physical properties by containing leather fibers contained in the leather spun yarn which are longer than conventional leather fibers as the leather fibers contained in the leather spun yarn.
  • Natural leather as a tough shell wrapping the animal's body is widely used in various fields such as bags, shoes and furniture with excellent physical properties.
  • the natural leather is made into products through chemical and physical processing processes after being separated from the animal's body, and a cutting process according to a design of a desired product among several processes is required.
  • a large amount of leather waste is generated through the cutting process, and most of the leather waste is incinerated and buried, and as a result, environmental problems are seriously emerging. Therefore, various research and development related to a recycling method of the leather waste is required.
  • the conventional technique is to use a shaving scrap generated in the leather manufacturing process and is a technique using process byproducts that are generated in an early step of forming raw hide and skin to leather, not a method of using flat/flaked leather waste discharged as cutting waste that is substantially generated by a cutting process.
  • spun leather yarn including leather fibers manufactured by carding blended fibers made by blending leather fibers, general fibers and polymer fibers to produce a sliver and twisting and drafting the sliver.
  • the conventional leather fiber has a problem that it is difficult to be manufactured to leather spun yarn due to an average of about 10 mm in length, and the physical properties such as tensile strength are not high due to the short length of the leather fiber.
  • the present inventors developed a leather fiber capable of manufacturing leather spun yarn from leather waste to manufacture fabrics, knits, and laces including the property of leather, found that the leather fibers were produced without being affected by the season by replacing a leather material used for existing bags, running shoes, and the like to manufacture high-quality leather spun yarn including warmth and general flame resistance of natural leather, and then completed the present invention.
  • the present invention is invented to solve the problems in the related art and an object of the present invention is to provide a leather fiber capable of manufacturing leather spun yarn with improved physical properties by containing leather fibers longer than conventional leather fibers by improving the length, thickness, strength, fineness, and the like of the leather fibers contained in the leather spun yarn together with synthetic fibers.
  • an object of the present invention is to provide a leather fiber capable of manufacturing leather spun yarn with improved physical properties capable of adjusting the thickness due to an excellent length/thickness ratio of the leather fibers contained in the leather spun yarn.
  • the present invention provides a leather fiber for leather spun yarn with improved physical properties, in which the leather fiber has an average length of 15 mm or more and 40% or more of the content of fibers of more than 15 mm, in the leather fibers for the leather spun yarn contained in the leather spun yarn formed by containing the leather fibers and synthetic fibers.
  • the leather fiber may have an average thickness of 0.05 to 0.15 mm.
  • the leather fiber may have a length/thickness ratio of average 130 or more.
  • the leather fiber may have 15% or more of the content of fibers having the length/thickness ratio of more than 200.
  • the leather spun yarn may contain 10 wt% or more of the leather fibers.
  • the synthetic fibers may be any one or two or more of polyamide fibers, polyester fibers, polyurethane fibers, polyurea fibers, polyacryl fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, polypropylene fibers, polyethylene fibers, polystyrene fibers, and polyfluoroethylene fibers.
  • the leather fibers may be contained in 10 wt% or more in the leather spun yarn.
  • the present invention provides a leather product including the leather fibers for the leather spun yarn.
  • the leather spun yarn with improved physical properties has an effect of improving physical properties such as tensile strength and the like by improving the length of the leather fibers contained the leather spun yarn to contain leather fibers longer than conventional leather fibers together with synthetic fibers.
  • wasted leather may be used as leather fiber after the leather fiber used in the present invention is cut, there is a beneficial effect on an environment.
  • the ⁇ leather fiber' in the leather fiber for leather spun yarn of the present invention means a set of leather fibers contained in the leather spun yarn.
  • the content of fibers when the content of fibers is shown as '%', unless the limited words such as 'weight', 'volume', and the like are disclosed, it means a content ratio according to the total number of fibers.
  • the present invention relates to a leather fiber for leather spun yarn contained in the leather spun yarn formed by containing the leather fibers and synthetic fibers, in which the leather fiber contained in the leather spun yarn has an average length of 15 mm or more and 40% or more of the content of fibers of more than 15 mm.
  • the spun yarn it is prevented threads from being released with frictional force between the fibers to maintain a state of the threads, and as the length of the fibers contained is increased, the frictional force is increased, and the strength is improved.
  • the average length of the leather fibers contained in the leather spun yarn of the present invention is 15 mm or more to improve the frictional force between the leather fibers contained in the leather spun yarn.
  • the leather fiber contained in the leather spun yarn of the present invention has 40% or more of the content of leather fibers of more than 15 mm, a large amount of longer leather fibers is contained to further improve the frictional force between the fibers.
  • the leather fiber contained in the leather spun yarn of the present invention has an average thickness of 0.05 to 0.15 mm and a length/thickness ratio is average 130 or more.
  • the leather fiber contained in the leather spun yarn has the average thickness of 0.05 to 0.15 mm.
  • the fiber refers to a long and thin leather fiber, the processibility is improved, and it is easy to adjust the thickness of the leather spun yarn. Accordingly, it is preferred that the length/thickness ratio of the leather fiber is average 130 or more.
  • the content of fibers having the length/thickness ratio of more than 200 is 15% or more.
  • the leather fibers used in the present invention are obtained from the leather, and the leather has a constant length as a flaked/flat scrap to enable the extraction of fiber form.
  • the leather is crushed by a leather waste treating apparatus of Korean Patent Registration No. 1804099 to break the binding force between the fibers and then the crushed leather may be separated and obtained into leather fibers through a separation process.
  • leather fibers of the present invention in order to obtain the long leather fibers, it is preferred to obtain leather fibers using a scrap having a length of one surface of about 100 mm or more and an area of 50 to 250 cm 2 .
  • the separation process separates the leather fibers and separates uniform leather fibers to improve the physical properties of the leather spun yarn and the uniformity ratio in a leather product including the leather spun yarn.
  • the separation process is a process of separating leather fibers through air pressure to apply the air pressure to the leather fibers and separate the leather fibers through a moving distance of the leather fiber due to the air pressure.
  • the separation process may be performed by separating the leather fibers by moving the leather fibers vertically or horizontally to the ground through the air pressure and obtaining the leather fibers lifted at a constant height by moving the leather fibers vertically.
  • the air pressure of the separation process is preferably 4 to 10 bar, more preferably 5 to 8 bar.
  • the separation process is performed preferably 2 to 8 times, more preferably 3 to 5 times for process efficiency.
  • the separation process may be performed by lifting leather fibers at air pressure of 4 to 10 bar on a pipe formed vertically to the ground and then obtaining the leather fibers lifted to 1 to 4 m.
  • the leather fibers are obtained by a method of suctioning the lifted and separated leather fibers by a suction device of 2 to 8 bar to obtain thin and long leather fibers.
  • the leather that may be used in the present invention may use various leather such as cow leather, sheep leather, pig leather, and the like, but the sheep leather or the pig leather is thinner than the cow leather and has low strength to form too short leather fibers, and thus, it is difficult to be manufactured as spun yarn. Accordingly, it is preferred to extract the leather fibers from the cow leather.
  • the synthetic fibers contained in the leather spun yarn together with the leather fibers may use polyamide fibers, polyester fibers, polyurethane fibers, polyurea fibers, polyacryl fibers, polyvinyl alcohol fibers, polyvinyl chloride fibers, polyvinylidene chloride fibers, polypropylene fibers, polyethylene fibers, polystyrene fibers, polyfluoroethylene fibers, and the like, and may use various synthetic fibers according to the usage and the purpose, and may be used with one or two or more synthetic fibers.
  • the synthetic fibers use preferably regenerated synthetic fibers for ecofriendliness.
  • the leather spun yarn of the present invention is formed by including the leather fibers and the synthetic fibers, but may be manufactured by using natural fibers and regenerated fibers together according to the usage and the purpose of the leather spun yarn.
  • the leather fibers contained in the leather spun yarn are preferably contained in 10 wt% or more, and when the leather fibers are contained in less than 10 wt%, sensibility such as leather-specific texture may deteriorate.
  • the leather spun yarn of the present invention may be manufactured using leather fibers and synthetic fibers by using a carding machine, a drawing frame, a fly frame, and a spinning machine, and may be manufactured by a general spun yarn manufacturing process.
  • the leather spun yarn with improved physical properties of the present invention containing the long leather fibers may be used for various leather products due to the improved physical properties.
  • a cow leather scrap was micronized using a leather waste treating apparatus and then each leather fiber was obtained by a separation process.
  • the cow leather scrap used a scrap having one surface of 100 mm or more and an area of about 50 to 200 cm 2 .
  • the separation process was performed total twice by lifting the leather fibers at air pressure of about 6 bar in a pipe formed vertically to the ground and then suctioning the leather fibers lifted to about 1.8 m or more by a suction device of about 4 bar to obtain the leather fibers to obtain the leather fibers.
  • the obtained leather fibers and polyester short fibers having the fineness of 1.5 deniers and the fiber length of 51 mm were blended at a weight ratio of 35 : 65 to manufacture the leather spun yarn of 600 deniers (Nm 15).
  • Exemplary Embodiment 2 was manufactured in the same manner as Exemplary Embodiment 1, but in the separation process, the leather fibers were lifted at air pressure of about 7 bar and then the leather fibers lifted to about 2 m or more were suctioned by a suction device of about 4.5 bar to obtain the leather spun yarn.
  • Exemplary Embodiment 3 was manufactured in the same manner as Exemplary Embodiment 1, but in the separation process, the leather fibers were lifted at air pressure of about 8 bar and then the leather fibers lifted to about 2.2 m or more were suctioned by a suction device of about 4.5 bar to obtain the leather spun yarn.
  • Comparative Embodiment was manufactured in the same manner as Exemplary Embodiment 1, but in the separation process, the leather fibers were lifted at air pressure of about 5 bar and then the leather fibers lifted to about 2 m or more were obtained to manufacture the leather spun yarn. ⁇ 1.5 g of the leather fibers obtained in Exemplary Embodiments 1 to 3 and Comparative Embodiment were taken and the number of leather fibers contained in 1.5 g and the length and the thickness of each leather fiber were measured. Table 1 illustrated lengths, Table 2 illustrated thicknesses, and Table 3 illustrated length/thickness ratios.
  • FIG. 1 is a graph showing a length distribution of leather fibers according to the present invention.
  • Table 1 and FIG. 1 it can be seen that in the leather fibers according to the present invention, the most leather fibers having the length of 10 to 15 mm are contained and the leather fibers of more than 15 mm are contained in 40% or more.
  • the leather fibers of Comparative Embodiment it can be seen that the most leather fibers of 5 to 10 mm are contained, many leather fibers of 5 mm or less are also contained, and the leather fibers of more than 15 mm are contained in 20.07%, and thus, there is a large difference from the leather fibers of Exemplary Embodiments.
  • the leather fibers of the present invention of an average of 15.41 mm are much longer than the leather fibers of Comparative Embodiment of 9.52 mm.
  • Exemplary Embodiment 3 Exemplary Embodiment average 0.05 or less 13 2 9 1 4 0.05 ⁇ 0.1 309 273 323 285 293.67 0.10 ⁇ 0.15 902 785 696 889 790 0.15 ⁇ 0.2 222 165 182 221 189.33 0.20.25 28 32 34 9 25 0.25 ⁇ 0.3 1 7 6 2 5 More than 0.3 0 0 2 1 1 Total number of fibers 1475 1264 1252 1408 1308 Average 0.122 0.1154 0.1205 0.124 0.12
  • FIG. 2 is a graph showing a thickness distribution of leather fibers according to the present invention. As illustrated in Table 2 and FIG. 2 , it can be seen that in both the leather fibers according to the present invention and the leather fibers of Comparative Embodiment, the most leather fibers having the thickness of 0.1 to 0.15 mm are contained and in both Exemplary Embodiments and Comparative Embodiment, the leather fibers have an average thickness of about 0.115 to 0.125 mm and have similar thicknesses thereto.
  • FIG. 3 is a graph showing a length/thickness ratio distribution of leather fibers according to the present invention. As illustrated in Table 3 and FIG. 3 , it can be seen that in both the leather fibers according to the present invention and the leather fibers of Comparative Embodiment, the most leather fibers having the length/thickness ratio of 150 to 200 are contained. In the leather fibers of Exemplary Embodiments, it can be seen that the number of leather fibers having the length/thickness ratio of 50 or less is small, the number of leather fibers having the large length/thickness ratio is large, and the content of fibers having the average length/thickness ratio of 130 or more and the length/thickness ratio of more than 200 is 15% or more.
  • the tensile strength was measured as the spun yarn strength using a universal testing machine (UTM) of Instron under a measurement temperature of 20°C and the humidity of 65% according to ASTM D2256 standard.
  • UPM universal testing machine
  • Table 4 Classification Comparative Embodiment Exemplary Embodiment 1 Exemplary Embodiment 2 Exemplary Embodiment 3
  • the tensile strength with improved physical properties according to the present invention is 2.5 to 3.0 g/d, which is very greater than 0.8 g/d of Comparative Embodiment. It can be seen that in the leather fibers contained in the leather spun yarn of the present invention, many leather fibers having the long length and the large length/thickness ratio exist to increase the frictional force between the fibers forming the leather spun yarn, thereby greatly improving the tensile strength of the leather spun yarn.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP21820078.0A 2021-08-26 2021-12-01 Lederfaser für lederspinngarn mit verbesserten physikalischen eigenschaften Withdrawn EP4163399A4 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20210113046 2021-08-26
PCT/KR2021/018026 WO2023027258A1 (ko) 2021-08-26 2021-12-01 물성이 향상된 가죽 방적사용 가죽섬유

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Publication Number Publication Date
EP4163399A1 true EP4163399A1 (de) 2023-04-12
EP4163399A4 EP4163399A4 (de) 2023-08-30

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EP21820078.0A Withdrawn EP4163399A4 (de) 2021-08-26 2021-12-01 Lederfaser für lederspinngarn mit verbesserten physikalischen eigenschaften

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US (1) US20240183086A1 (de)
EP (1) EP4163399A4 (de)
WO (1) WO2023027258A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12241182B2 (en) * 2021-08-26 2025-03-04 Atko Planning Inc. Leather fiber for the leather spun yarn having improved property

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1263908C (zh) * 2004-04-10 2006-07-12 张立文 动物皮革胶原纤维纱线及其生产方法
US20080072628A1 (en) * 2004-09-09 2008-03-27 Tianwei Textile Technology (Shenzhen) Co., Ltd. Kind of Yarn of Leather and Its Production Process
KR100765549B1 (ko) 2006-05-19 2007-10-11 이형경 천연 젤라틴 섬유의 제조 방법
CN104136669B (zh) * 2012-02-27 2016-03-23 东丽株式会社 海岛纤维、混纤丝及纤维制品
KR20180118386A (ko) 2017-04-21 2018-10-31 한국신발피혁연구원 내가수분해성이 우수한 콜라겐 섬유를 이용한 피혁 제조방법 및 그에 의해 제조된 피혁
KR101804099B1 (ko) 2017-06-21 2017-12-01 (주)아코플레닝 가죽 폐기물 처리 장치
KR102034218B1 (ko) 2019-05-09 2019-10-18 (주)아코플레닝 가죽섬유를 이용한 방적가죽원사의 제조방법 및 상기 제조방법에 따라 제조된 방적가죽원사
US11993869B2 (en) * 2020-01-13 2024-05-28 Atko Planning Inc. Leather fiber for spun yarn
KR102403743B1 (ko) * 2020-01-13 2022-05-30 (주)아코플레닝 가죽 방적사용 가죽 섬유
KR102282044B1 (ko) * 2020-04-23 2021-07-27 한국섬유소재연구원 폐가죽섬유함유 혼합방적사의 제조방법
TWI718976B (zh) * 2020-07-30 2021-02-11 郭俊榮 由拉伸及控制斷裂長纖維所得短纖維製成的紗線及其製品

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EP4163399A4 (de) 2023-08-30
US20240183086A1 (en) 2024-06-06
WO2023027258A1 (ko) 2023-03-02

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