EP4183907A1 - Schnittfestes polyethylengarn - Google Patents

Schnittfestes polyethylengarn Download PDF

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Publication number
EP4183907A1
EP4183907A1 EP21915839.1A EP21915839A EP4183907A1 EP 4183907 A1 EP4183907 A1 EP 4183907A1 EP 21915839 A EP21915839 A EP 21915839A EP 4183907 A1 EP4183907 A1 EP 4183907A1
Authority
EP
European Patent Office
Prior art keywords
yarn
angular frequency
polyethylene yarn
rad
cut
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
EP21915839.1A
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English (en)
French (fr)
Inventor
Sinho LEE
Young Soo Lee
Sung Yong Kim
Jung Eun Park
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Kolon Industries Inc
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Kolon Industries Inc
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Filing date
Publication date
Application filed by Kolon Industries Inc filed Critical Kolon Industries Inc
Publication of EP4183907A1 publication Critical patent/EP4183907A1/de
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/38—Threads in which fibres, filaments, or yarns are wound with other yarns or filaments, e.g. wrap yarns, i.e. strands of filaments or staple fibres are wrapped by a helically wound binder yarn
    • 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
    • D02G3/442—Cut or abrasion resistant yarns or threads
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/08—Interlacing constituent filaments without breakage thereof, e.g. by use of turbulent air streams
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/228—Stretching in two or more steps, with or without intermediate steps
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/22—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration
    • D04B1/24—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel
    • D04B1/28—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting goods of particular configuration wearing apparel gloves
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/20—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes specially adapted for knitting articles of particular configuration
    • D04B21/207—Wearing apparel or garment blanks
    • 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
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • 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
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D10B2321/0211—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene high-strength or high-molecular-weight polyethylene, e.g. ultra-high molecular weight polyethylene [UHMWPE]
    • 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
    • D10B2401/00—Physical 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
    • D10B2401/00—Physical properties
    • D10B2401/06—Load-responsive characteristics
    • D10B2401/063—Load-responsive characteristics high strength
    • 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
    • D10B2501/00—Wearing apparel
    • D10B2501/04—Outerwear; Protective garments
    • D10B2501/041—Gloves

Definitions

  • the following disclosure relates to a cut-resistant polyethylene yarn, and more particularly, to a cut-resistant polyethylene yarn which allows manufacture of a product having both excellent cut resistance and excellent wear resistance.
  • Patent Document 1 Japanese Patent Laid-Open Publication No. 2002-180324
  • An embodiment of the present invention is directed to providing a polyethylene yarn having excellent cut resistance and improved wear resistance.
  • a cut-resistant polyethylene yarn having the following properties: in a graph of a storage modulus (G') according to an angular frequency ( ⁇ ), the storage modulus of 10 Pa to 100 Pa at the angular frequency of 1 rad/s, and the storage modulus of 100 Pa to 1000 Pa at the angular frequency of 1 rad/s; and in a graph of tan ⁇ according to an angular frequency ( ⁇ ), tan ⁇ of 9 or more at the angular frequency of 0.1 rad/s.
  • polyethylene may have, in a graph of a loss modulus (G") according to an angular frequency ( ⁇ ), the loss modulus of 100 Pa to 700 Pa at the angular frequency of 0.1 rad/s, and a point at which the loss modulus is 1000 Pa in a section of the angular frequency of 0.25 to 0.5 rad/s.
  • G loss modulus
  • ⁇ angular frequency
  • polyethylene may have, in a graph of a complex viscosity ( ⁇ ⁇ ) according to an angular frequency ( ⁇ ), the complex viscosity of 3000 Pa ⁇ s to 6000 Pa ⁇ s at the angular frequency of 0.1 rad/s, and an average gradient of -1000 to -300 in a section of the angular frequency of 0.1 rad/s to 1 rad/s.
  • the polyethylene yarn may have a fineness of 1 to 3 denier per filament (DPF).
  • the phase angle in a graph of a phase angle according to a multiple shear modulus (G*), the phase angle may be 75 to 90° at the multiple shear modulus (G*) of 350 to 1000 Pa.
  • the number of fluff occurrences may be 20 EA/50,000 m or less.
  • a cut-resistant fabric includes the cut-resistant polyethylene yarn described above.
  • the fabric may have a cut resistance of 5.5 N or more as measured according to the standard of IS013997:1999.
  • a protective product includes the cut-resistant polyethylene fabric described above.
  • the protective product according to an exemplary embodiment of the present invention may be a cut-resistant glove.
  • the cut-resistant polyethylene yarn according to the present invention has excellent cut resistance, it allows manufacture of fiber products which may be substantially applied to industrial and disaster sites of a high risk group.
  • cut-resistant polyethylene yarn according to the present invention allows manufacture of products having high wear resistance.
  • FIGS. 1 to FIGS. 5 are graphs of results of measuring rheological properties of the cut-resistant polyethylene yarn according to an exemplary embodiment of the present invention.
  • a unit of % or ratio refers to a wt% or a weight ratio and wt% refers to wt% of any one component in a total composition, unless otherwise defined.
  • the numerical range used in the present specification includes all values within the range including the lower limit and the upper limit, increments logically derived in a form and span in a defined range, all double limited values, and all possible combinations of the upper limit and the lower limit in the numerical range defined in different forms. Unless otherwise defined in the specification of the present invention, values which may be outside a numerical range due to experimental error or rounding of a value are also included in the defined numerical range.
  • Cut resistance means durability against cuts by a blade of a knife or an object with sharp portions such as a blade, and those who work in high-risk industrial fields such as metal and glass working shops and butcher shops or those who work in the security and disaster fields such as police, military, or firefighters wear cut-resistant gloves or clothing, in order to protect the human body from deadly weapons or sharp cutting tools such as knives.
  • the present applicant intensively conducted a study for a long time in order to develop a polyethylene yarn having excellent cut resistance and wear resistance, and as a result, found that a polyethylene yarn having specific rheological properties allows manufacture of a product having both excellent cut resistance and excellent wear resistance, and thus, deepened the study, thereby completing the present invention.
  • the polyethylene yarn in the present specification refers to mono- and multifilament manufactured by a process such as spinning and drawing, using polyethylene chips as a raw material.
  • the polyethylene yarn may include 40 to 500 filaments each having a fineness of 1 to 3 denier, and may have a total fineness of 100 to 1,000 denier.
  • the rheological properties in the present specification refer to a storage modulus (G'), a loss modulus (G"), tan ⁇ , a complex viscosity ( ⁇ ⁇ ), and a phase angle (°), and unless otherwise defined in the present specification, the rheological may be measured using DHR-2 (TA Instrument). Geometry used in the measurement is plate-plate (parallel plate, PP), which measures the storage modulus (G'), the loss modulus (G"), tan ⁇ , the complex viscosity ( ⁇ ⁇ ), and the phase angle depending on an angular velocity change.
  • DHR-2 TA Instrument
  • the rheological properties may be measured at a temperature of 250°C under a nitrogen atmosphere, and a measurement specification (sample dimension) may be a diameter of 25 mm, a gap point of 1.0 mm, and a strain of 10%.
  • the cut-resistant polyethylene yarn of the present invention may have the following properties: in a graph of a storage modulus (G') according to an angular frequency ( ⁇ ), the storage modulus of 10 Pa to 100 Pa at the angular frequency of 0.1 rad/s, and the storage modulus of 100 Pa to 1000 Pa at the angular frequency of 1 rad/s; and in a graph of tan ⁇ according to an angular frequency ( ⁇ ), tan ⁇ of 9 or more at the angular frequency ( ⁇ ) of 0.1 rad/s.
  • the polyethylene yarn as such may be manufactured into a product having excellent wear resistance as well as excellent cut resistance.
  • the cut resistance of a product including the polyethylene yarn according to the present invention may be determined by not only the strength of the polyethylene yarn but also slippage of the polyethylene yarn, that is, a characteristic in which when a sharp tool such as a blade of a knife passes over the polyethylene yarn, the tool slides along the surface without being caught in the yarn, and rolling of yarns, that is, a characteristic in which when a sharp tool such as a blade of a knife passes over the yarn, the yarn is twisted or curled around the longitudinal axis of the yarn.
  • the polyethylene yarn according to the present invention has the above ranges in the graphs of the storage modulus and tan ⁇ according to the angular frequency, thereby allowing manufacture of a product having excellent slippage and rolling characteristics and having excellent cut resistance.
  • the storage modulus may be 20 Pa to 80 Pa, and more specifically 30 Pa to 50 Pa at the angular frequency of 0.1 rad/s.
  • the storage modulus may have a positive (+) gradient on average.
  • the storage modulus may have a positive (+) gradient on average in a section of the angular frequency of 0.1 rad/s to 1000 rad/s.
  • the yarn having the physical properties as such may show sufficient elasticity to have cut resistance and have relatively excellent strength.
  • the average gradient of the storage modulus (log G') may be 0.9 to 1.6, specifically, 1.1 to 1.5 in the section of the angular frequency (log ⁇ ) of 0 to 1 rad/s.
  • the storage modulus is higher than the above range, the strength is improved but stiffness is also raised, and thus, when a fabric is manufactured by weaving or braiding, the fabric is stiff, so that it is difficult to process the fabric into a desired product and a product wearer may feel uncomfortable.
  • tan ⁇ may have a negative (-) gradient on average, and more specifically, may have a negative (-) gradient on average in the section of 0.1 rad/s to 1000 rad/s. That is, the polyethylene yarn according to the present invention has, in the graph of tan ⁇ according to the angular frequency ( ⁇ ), a gradient value having a relatively high absolute value, and does not form an inflection point unlike other polyethylenes. It means that the polyethylene yarn as such shows a relatively high viscosity as compared with elasticity.
  • the yarn may have, in the graph of tan ⁇ according to the angular frequency ( ⁇ ), tan ⁇ of 9 or more and less than 15, specifically 9 to 12 at the angular frequency of 0.1 rad/s, but is not limited thereto.
  • the angular frequency when a tan ⁇ value is 1 may be 200 to 500 rad/s, specifically 250 to 400 rad/s. Since the section of the angular frequency with the tan ⁇ value of 1 is relatively large, the viscosity is better than the viscosity of the polyethylene yarn commonly used in the art, and the polyethylene yarn may have substantially no entanglement between polyethylene high molecular chains and have excellent high molecular chain arrangement. Since the yarn as such has excellent arrangement between high molecular chains, it allows manufacture of fabric having better slippage and rolling characteristics. The fabric manufactured from the yarn as such has excellent cut resistance, thereby preventing damage of fabric by pilling in which lint occurs even when repeated external force is applied by a blade of a knife or a sharp object.
  • the polyethylene yarn may have, in the graph of the loss modulus (G") according to the angular frequency ( ⁇ ), the loss modulus of 100 Pa to 700 Pa, specifically 200 Pa to 500 Pa at the angular frequency of 0.1 rad/s, and may show a point in which the loss modulus is 1000 Pa in the section of the angular frequency of 0.25 rad/s to 0.5 rad/s.
  • the average gradient of the loss modulus may be 0.75 to 0.9 in the section of the angular frequency (log ⁇ ) of 0 to 1 rad/s.
  • the complex viscosity may be 3000 Pa ⁇ s to 6000 Pa ⁇ s, specifically 3700 Pa ⁇ s to 5000 Pa ⁇ s at the angular frequency of 0.1 rad/s, and the average gradient may be -1000 to -300, specifically - 800 to -500 in the section of the angular frequency of 0.1 rad/s to 1 rad/s.
  • the phase angle may be 60 to 90°, specifically 75 to 90° at the multiple shear modulus (G*) of 350 to 1000 Pa.
  • the present invention may have a melt viscosity allowing easy melt spinning and may suppress defect occurrence by a spinning process.
  • the polyethylene yarn according to the present invention may have a weight average molecular weight (Mw) of 80,000 g/mol to 180,000 g/mol, specifically, 100,000 g/mol to 170,000 g/mol, and more specifically, 120,000 g/mol to 160,000 g/mol.
  • Mw weight average molecular weight
  • the polyethylene yarn may be a high-density polyethylene (HDPE) having a density of 0.941 to 0.965 g/cm 3 , and a crystallinity of 55 to 85%, preferably 60 to 85%.
  • HDPE high-density polyethylene
  • the polyethylene yarn may have a polydispersity index (PDI) of more than 5 and less than 9.
  • the polydispersity index (PDI) is a ratio (Mw/Mn) of a weight average molecular weight (Mw) to a number average molecular weight (Mn), and is also referred to as a molecular weight distribution index (MWD).
  • Mw/Mn weight average molecular weight
  • Mn number average molecular weight
  • MWD molecular weight distribution index
  • melt flowability and processability at the time of melt extrusion are better due to a large molecular weight distribution, but a low molecular weight polyethylene is included too much, which may reduce the tensile strength of the finally obtained a polyethylene yarn.
  • the polyethylene yarn of the present invention as such may have a tensile strength of 3.5 to 8.5 g/de, a tensile modulus of 15 to 80 g/de, and an elongation at break of 14 to 55%.
  • a tensile strength is more than 8.5 g/de
  • the tensile modulus is more than 80 g/de
  • the elongation at break is less than 14%
  • wearability of the polyethylene yarn is not good, and the fabric manufactured using the yarn is excessively stiff, causing a user to feel uncomfortable.
  • the tensile strength is less than 3.5 g/de
  • the tensile modulus is less than 15 g/de
  • the elongation at break is more than 55%
  • lint is formed on the fabric manufactured from the polyethylene yarn when the fabric is continuously used by a user.
  • the polyethylene yarn of the present invention may have a circular cross-section or a non-circular cross-section, but it is preferred to have a circular cross-section for excellent slippage characteristics.
  • the polyethylene yarn of the present invention may have a strength of 11 g/d or more, specifically 13 g/d or more so that the product manufactured using the yarn has a cutting force of 5 or more.
  • a method of manufacturing yarn of the present invention is not limited as long as it is a method of manufacturing yarn using polyethylene known in the art.
  • the yarn may be manufactured by including: melting polyethylene chips to obtain polyethylene melt; extruding the polyethylene melt by a spinneret having a plurality of nozzle holes; cooling a plurality of filaments formed when the polyethylene melt is discharged from nozzle holes; sizing the plurality of cooled filaments to form a multifilament yarn; drawing the multifilament yarn at a total drawing ratio of 5 to 20 times and heat setting the drawn multifilament yarn; and winding the drawn multifilament yarn.
  • a relaxation ratio at the last stage drawing in the multi-stage drawing may be 3% to 8% or less, but is not limited thereto.
  • the relaxation ratio at the last stage drawing refers to a relaxation ratio at the time of drawing which is finally performed after the drawing and before the winding.
  • the polyethylene melt is transported to a spinneret having a plurality of nozzle holes by a screw in an extruder, and then is extruded through the nozzle holes.
  • the number of holes of the spinneret may be set depending on the denier per filament (DPF) and the total fineness of the yarn to be manufactured.
  • DPF denier per filament
  • a spinneret 200 may have 40 to 500 nozzle holes.
  • the melting process in the extruder and the extrusion process by the spinneret may be performed at 150 to 315°C, preferably 250 to 315°C, and more preferably 260 to 290°C.
  • the spinning temperature is lower than 150°C, polyethylene chips are not melted uniformly due to the low spinning temperature, so that the spinning may be difficult.
  • the spinning temperature is higher than 315°C, thermal decomposition of polyethylene occurs, so that high strength expression may be difficult.
  • Filaments may be cooled in an air cooling manner.
  • the filaments may be cooled at 15 to 40°C, using a cooling air at a wind speed of 0.2 to 1 m/sec.
  • the cooling temperature is lower than 15°C, elongation is insufficient due to supercooling so that breakage may occur in a subsequent drawing process, and when the cooling temperature is higher than 40°C, a fineness deviation between filaments is increased due to solidification unevenness and breakage may occur in the drawing process.
  • an oiling process of imparting an oil agent to the cooled filaments using an oil roller (OR) or an oil jet may be further performed.
  • the oil agent impartment step may be performed by a metered oiling (MO) method.
  • an interlacing process by an interlacing device may be further performed in order to improve sizing and weaving of the polyethylene yarn.
  • the polyethylene yarn manufactured by the method is braided or woven to manufacture a fabric having cut resistance.
  • the polyethylene fabric according to the present invention may be knitted into a covered yarn.
  • the covered yarn is not limited as long as it contains the polyethylene yarn of the present invention, but as an example, may be formed by including the polyethylene yarn of the present invention, a polyurethane yarn (e.g., Spandex) which spirally surrounds the polyethylene yarn, and a polyamide yarn (e.g., nylon 6 or nylon 66) which spirally surrounds the polyethylene yarn.
  • a polyester yarn e.g., PET yarn
  • PET yarn may be included instead of the polyamide yarn.
  • the polyethylene yarn may have a weight of 45 to 85% of the total weight of the covered yarn
  • the polyurethane yarn may have a weight of 5 to 30% of the total weight of the covered yarn
  • the polyamide or polyester yarn may have a weight of 5 to 30% of the total weight of the covered yarn, but are not limited thereto.
  • the fabric according to the present invention may be a woven fabric or a knitted fabric having a weight per unit area (that is, surface density) of 150 to 800 g/m 2 .
  • surface density a weight per unit area
  • the fabric has a surface density of less than 150 g/m 2 , fabric compactness is insufficient and many pores exist in the fabric, and these pores reduce the cut resistance of the fabric.
  • the fabric has a surface density of more than 800 g/m 2 , the fabric is very stiff due to the excessively dense structure of the fabric, problems with a user's tactile sensation occur, and problems in use are caused due to its high weight.
  • the fabric as such may be processed into a product requiring excellent cut resistance.
  • the product may be any conventional fiber product, but preferably, may be protective gloves or clothing for performing a protective function for the human body.
  • the protective product of the present invention has excellent cut resistance of a cut load of 5.5 N or more, more preferably 5.6 N to 9 N, and also has a low stiffness of 5 gf or less, more preferably 2 to 5 gf, thereby showing excellent wearability.
  • the rheological properties were measured using DHR-2 (TA Instrument), and a geometry used in the measurement was a storage modulus (G'), a loss modulus (G"), tan ⁇ , a complex viscosity ( ⁇ ⁇ ), and a phase angle (°) depending on an angular velocity change, measured with a plate-plate (parallel plate, PP).
  • the measurement was performed at a temperature of 250°C under a nitrogen atmosphere, and a sample dimension was measured at a diameter of 25 mm, a gap point of 1.0 mm, and a strain of 10%.
  • FIGS. 1 to 5 Graphs of results of measuring the rheological properties of Example 1 and Comparative Example 1 are shown in the following FIGS. 1 to 5 .
  • FIG. 1 shows results of measuring the storage modulus (G')
  • FIG. 2 shows results of measuring the loss modulus (G")
  • FIG. 3 shows results of measuring tan ⁇
  • FIG. 4 shows results of measuring complex viscosity ( ⁇ ⁇ )
  • FIG. 5 shows results of measuring the phase angle (°) of Example 1 and Comparative Example 1.
  • the cut resistance of the protective glove was measured according to the specification of IS013997:1999.
  • a specimen (width: 60 mm, vertical: 60 mm) was taken from the palm of the protective glove, and the stiffness of the specimen was measured according to section 38 of ASTM D885/D885M-10a (2014).
  • the measurement devices were as follows:
  • the specimen was placed on the center of the specimen holder so that the outer side of the glove of the specimen faced up and the inner side of the glove of the specimen faces down, and the side adjacent to glove fingers and the opposite side (that is, the side adjacent to a glove wrist) were directly supported by the specimen holder.
  • the specimen was maintained in a flat stage without being bent.
  • a distance between the specimen supporting part of the specimen holder and the depressing part of the specimen depressor was 5 mm.
  • the specimen holder was raised up to 15 mm while the specimen depressor was allowed to stand motionless, thereby measuring a maximum tension.
  • the wear resistance of the protective glove was measured according to the specification of ASTM-D 3884. A Martindale wear resistance meter was used as the evaluation instrument. The friction cloth used at this time was 320 Cw sandpaper and an applied load was 500 g.
  • a polyethylene multifilament interlaced yarn including 240 filaments and having a total fineness of 400 deniers was manufactured.
  • polyethylene chips were added to an extruder and melted.
  • the polyethylene melt was extruded through a spinneret having 240 nozzle holes.
  • the filaments formed by being discharged from the nozzle holes of the spinneret were cooled in a cooling unit, and were sized into a multifilament yarn by a sizer. Subsequently, the multifilament yarn was drawn in a drawing unit and heat-set.
  • the drawing step was performed in a multistage drawing, and a relaxation ratio at the last drawing stage of the multistage drawing was 8%. Subsequently, the drawn multifilament yarn was interlaced with an air pressure of 6.0 kgf/cm 2 in an interlacing device, and then wound on a winder. A winding tension was 0.6 g/d.
  • the rheological properties of the manufactured yarn were measured and are shown in the following Table 1 and FIGS. 1 to 5 .
  • the density, the weight average molecular weight, and PDI of the manufactured yarn were analyzed and are shown in the following Table 2.
  • a covered yarn was manufactured by surrounding the PE yarn of Examples 1 to 3 and Comparative Examples 1 to 3 spirally by a polyurethane yarn of 140 denier (Spandex) and a nylon yarn of 140 denier.
  • the weight of the polyethylene yarn was 60% of the total weight of the covered yarn, and the weights of the polyurethane yarn and the nylon yarn were 20%, respectively, of the total weight of the covered yarn.
  • the covered yarn was knitted to manufacture a protective glove.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Artificial Filaments (AREA)
  • Gloves (AREA)
  • Woven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP21915839.1A 2020-12-30 2021-12-29 Schnittfestes polyethylengarn Pending EP4183907A1 (de)

Applications Claiming Priority (2)

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KR20200188147 2020-12-30
PCT/KR2021/020204 WO2022146042A1 (ko) 2020-12-30 2021-12-29 내 절창성 폴리에틸렌 원사

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EP4183907A1 true EP4183907A1 (de) 2023-05-24

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US (1) US20230357965A1 (de)
EP (1) EP4183907A1 (de)
JP (1) JP2023543296A (de)
KR (1) KR20220097301A (de)
CN (1) CN116324056A (de)
TW (1) TWI821846B (de)
WO (1) WO2022146042A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999063137A1 (fr) * 1998-06-04 1999-12-09 Dsm N.V. Fibre de polyethylene haute resistance et son procede de production
JP3734077B2 (ja) 2000-12-11 2006-01-11 東洋紡績株式会社 高強度ポリエチレン繊維
JP4042040B2 (ja) * 2002-06-17 2008-02-06 東洋紡績株式会社 耐切創性に優れるポリエチレン繊維、織編物及びその利用
KR101361871B1 (ko) * 2011-03-03 2014-02-12 도요보 가부시키가이샤 고기능 폴리에틸렌 섬유 및 염색 고기능 폴리에틸렌 섬유
KR101981763B1 (ko) * 2018-01-05 2019-05-27 주식회사 휴비스 공정성이 향상된 고강도 폴리에틸렌 섬유
KR102092934B1 (ko) * 2019-03-21 2020-03-24 코오롱인더스트리 주식회사 내절단성 폴리에틸렌 원사, 그 제조방법, 및 이것을 이용하여 제조된 보호용 제품

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TW202235708A (zh) 2022-09-16
US20230357965A1 (en) 2023-11-09
CN116324056A (zh) 2023-06-23
KR20220097301A (ko) 2022-07-07
TWI821846B (zh) 2023-11-11
WO2022146042A1 (ko) 2022-07-07
JP2023543296A (ja) 2023-10-13

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