EP3722477B1 - Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric - Google Patents

Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric Download PDF

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Publication number
EP3722477B1
EP3722477B1 EP19740472.6A EP19740472A EP3722477B1 EP 3722477 B1 EP3722477 B1 EP 3722477B1 EP 19740472 A EP19740472 A EP 19740472A EP 3722477 B1 EP3722477 B1 EP 3722477B1
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EP
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Prior art keywords
woven fabric
woven
present disclosure
manufacturing
fiber
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German (de)
English (en)
French (fr)
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EP3722477A4 (en
EP3722477A1 (en
Inventor
Taiichiro ICHIKAWA
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Mitsui Chemicals Asahi Life Materials Co Ltd
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Mitsui Chemicals Inc
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • 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
    • D02J13/00—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass
    • D02J13/006—Heating or cooling the yarn, thread, cord, rope, or the like, not specific to any one of the processes provided for in this subclass in a fluid bed
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments

Definitions

  • the present disclosure relates to a method of manufacturing a spunbonded non-woven fabric.
  • non-woven fabrics have been widely used in various applications because the non-woven fabrics have been excellent in air permeability and flexibility. In the non-woven fabrics, therefore, various characteristics depending on the applications have been demanded, and improvement in the characteristics has been required.
  • absorbent articles paper diapers, sanitary napkins, and the like
  • medical materials operating gowns, drapes, sanitary masks, bed sheets, medical gauze, base fabrics for fomentation materials, and the like
  • Applications such as absorbent articles and medical materials have had portions coming in direct contact with the skin and, therefore, have especially required high flexibility.
  • Patent Document 1 proposes a method of manufacturing a spunbonded high-loft non-woven web including crimped multicomponent fibers excellent in flexibility.
  • Patent Document 2 describes a nonwoven fabric laminate that comprises three or more layers of a filament nonwoven fabric layer including a polyolefin-based filament.
  • An object of the present disclosure is to provide a spunbonded non-woven fabric without deteriorated flexibility and with excellent fuzz resistance, and a method of manufacturing the spunbonded non-woven fabric.
  • the present disclosure relates to the following aspects.
  • a method of manufacturing a spunbonded non-woven fabric without deteriorated flexibility and with excellent fuzz resistance is provided.
  • any numerical value range indicated by the term “to” represents any range including the numerical values described before and after the term “to” as the lower limit value and the upper limit value, respectively.
  • step encompasses not only an independent step but also a step of which the object is achieved even in a case in which the step is incapable of being definitely distinguished from another step.
  • the content of each constituent in a composition means the total amount of the plural kinds of the substances unless otherwise specified.
  • an MD (machine direction) direction refers to the direction of travel of a non-woven web in an apparatus of manufacturing a non-woven fabric.
  • a CD (cross direction) direction refers to a direction that is perpendicular to the MD direction and parallel to a principal face (a face orthogonal to the thickness direction of a non-woven fabric).
  • a method of manufacturing a spunbonded non-woven fabric of the present disclosure includes a step of melt-spinning a thermoplastic polymer to form a crimped fiber, and a step of collecting the crimped fiber and pressing the collected crimped fiber at a linear pressure of from 5.1 N/mm or more to 7.0 N/mm or less by a compaction roll, wherein the thermoplastic polymer includes an olefinic polymer including a propylene-based polymer (hereinafter also referred to as "step (1) of pressing crimped fiber").
  • the manufacturing method of the present disclosure includes the step of pressing the collected crimped fiber at a linear pressure of from 5.1 N/mm or more to 7.0 N/mm or less by the compaction roll, thereby enabling a spunbonded non-woven fabric without deteriorated flexibility and with excellent fuzz resistance to be manufactured.
  • the manufacturing method of the present disclosure includes the step of melt-spinning the thermoplastic polymer to form the crimped fiber.
  • the step of forming the crimped fiber is not particularly limited as long as the step enables the crimped fiber to be formed.
  • the step may also include a known process of cooling and drawing the thermoplastic polymer.
  • thermoplastic polymer used in the manufacturing method of the present disclosure is as described below.
  • the manufacturing method of the present disclosure includes the step of collecting the crimped fiber and pressing the collected crimped fiber at a linear pressure of from 5.1 N/mm or more to 7.0 N/mm or less by the compaction roll.
  • the temperature of the compaction roll while pressing the crimped fiber may be from 80°C to 120°C, may be from 85°C to 115°C, may be from 90°C to 110°C, and may be from 95°C to 105°C.
  • the temperature of the compaction roll while pressing the crimped fiber is preferably lower than the melting point of the crimped fiber.
  • the linear pressure at which the crimped fiber is pressed is 5.1 N/mm or more, and preferably 5.2 N/mm or more, from the viewpoint of fuzz resistance.
  • the linear pressure at which the crimped fiber is pressed is 7.0 N/mm or less, preferably 6.5 N/mm or less, and more preferably 6.0 N/mm or less, from the viewpoint of flexibility.
  • a non-woven fabric layered body of the present disclosure may include a pressure bonding portion and a non-pressure bonding portion from the viewpoint of excellent flexibility.
  • the area rate of the pressure bonding portion is preferably from 7% to 20%.
  • the area rate of the pressure bonding portion is more preferably 8% or more and 18% or less.
  • the area rate of the pressure bonding portion is set at the rate of the area of a thermocompression bonding portion with respect to the area of an observed non-woven fabric in a case in which a test piece having a size of 10 mm ⁇ 10 mm is sampled from the non-woven fabric layered body, and a surface of the test piece, which has come into contact with the embossing roll, is observed with an electron microscope (magnification: 100 times).
  • the thermoplastic polymer includes an olefinic polymer including a propylene-based polymer.
  • Further examples of thermoplastic polymers are a polyester-based polymer, a polyamide-based polymer, and a polymer composition of such polymers.
  • the olefinic polymer is a polymer including an olefin as a structural unit.
  • the polyester-based polymer is a polymer including an ester as a structural unit
  • the polyamide-based polymer is a polymer including an amide as a structural unit.
  • the thermoplastic polymer is a concept encompassing a thermoplastic polymer composition.
  • thermoplastic polymer of the present invention preferably includes a propylene-based polymer as the olefinic polymer.
  • Such propylene-based polymers are preferably, for example, a homopolymer of propylene, and a propylene/a-olefin random copolymer (for example, a random copolymer of propylene and one or two or more ⁇ -olefins having from 2 to 8 carbon atoms).
  • a propylene/a-olefin random copolymer for example, a random copolymer of propylene and one or two or more ⁇ -olefins having from 2 to 8 carbon atoms.
  • preferred ⁇ -olefins include propylene as well as ethylene, 1-butene, 1-pentene, 1-hexene, 1-octene, and 4-methyl-1-pentene, from the viewpoint of excellent flexibility.
  • the content of ⁇ -olefin in the propylene/a-olefin random copolymer is not particularly limited, and is, for example, preferably from 1% by mol to 10% by mol, and more preferably from 1% by mol to 5% by mol.
  • the melting point (Tm) of the propylene-based polymer may be 125°C or more, and may be from 125°C to 165°C.
  • the melt flow rate (MFR) (ASTM D-1238, 230°C, a load of 2160 g) may be from 10 g/10 minutes to 100 g/10 minutes, and may be from 20 g/10 minutes to 70 g/10 minutes.
  • the crimped fiber used in the manufacturing method of the present disclosure may be a fiber including one thermoplastic polymer, or may be a composite fiber including two or more thermoplastic polymers.
  • the composite fiber may be, for example, a side-by-side type, a concentric core-sheath type, or an eccentric core-sheath type.
  • the eccentric core-sheath type composite fiber may be an exposure type in which a core is exposed to a surface, or may be a non-exposure type in which a core is not exposed to a surface.
  • the crimped fiber is preferably a crimped composite fiber including a propylene-based polymer, and more preferably an eccentric core-sheath type crimped composite fiber including a propylene-based polymer.
  • the propylene-based polymer in the crimped composite fiber, is included in a side with much exposure to the surface of the crimped composite fiber, and the propylene-based polymer is a propylene/a-olefin copolymer or a mixture of a propylene homopolymer and a propylene/a-olefin copolymer.
  • the side with much exposure to the surface represents a side to which a larger amount of thermoplastic polymer is exposed in the crimped composite fiber.
  • the side with much exposure to the surface is generically referred to as a sheath portion.
  • a side with less exposure to the surface is generically referred to as a core portion.
  • examples of a preferred embodiment of a mass ratio between a sheath portion and a core portion include from 90/10 to 60/40 (more preferably from 85/15 to 40/60).
  • the crimped fiber may include a commonly used additive, if necessary.
  • the additive include an antioxidant, a weathering stabilizer, a light stabilizer, a dispersant, an antistatic agent, an anti-fogging agent, an anti-blocking agent, a lubricant, a nucleating agent, a pigment, a penetrant, and a humectant.
  • the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure preferably has a tensile load of from 10 N/25 mm to 30 N/25 mm, and more preferably from 15 N/25 mm to 25 N/25 mm, in the MD direction of the spunbonded non-woven fabric.
  • the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure preferably has a tensile load of from 5 N/25 mm to 20 N/25 mm, and more preferably from 10 N/25 mm to 15 N/25 mm, in the CD direction of the spunbonded non-woven fabric.
  • the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure preferably has a tensile strength of 2.0 N/25 mm or more, and more preferably 3.0 N/25 mm or more, in the case of stretching the spunbonded non-woven fabric in the MD direction at 5%.
  • the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure preferably has a tensile strength of 0.5 N/25 mm or more, and more preferably 0.8 N/25 mm or more, in the case of stretching the spunbonded non-woven fabric in the CD direction at 5%.
  • the tensile load and tensile strength in the case of stretching at 5% of the spunbonded non-woven fabric may be measured according to JIS L 1913 (2010). Specifically, a test piece of 25 mm in width ⁇ 200 mm in length may be collected from the spunbonded non-woven fabric, five points in MD may be measured at a distance between chucks of 100 mm and a head speed of 100 mm/min using a tensile testing machine, and an average value may be calculated to determine the tensile load (N/25 mm). A strength recorded in the case of stretching at 5% (between chucks: 105 mm) by a measurement program may be regarded as a load (5% load) in the case of stretching at 5%.
  • the basis weight of the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure is not particularly limited, and, for example, the basis weight of the spunbonded non-woven fabric may be from 5 g/m 2 to 30 g/m 2 , may be from 20 g/m 2 to 30 g/m 2 , and may be from 25 g/m 2 to 30 g/m 2 .
  • the tensile load of the spunbonded non-woven fabric in the MD direction, the tensile load of the spunbonded non-woven fabric in the CD direction, the tensile strength of the spunbonded non-woven fabric in the case of stretching at 5% in the MD direction, the tensile strength of the spunbonded non-woven fabric in the case of stretching at 5% in the CD direction, and the basis weight of the spunbonded non-woven fabric can be determined by methods described in Examples.
  • the average fiber diameter of the crimped fiber is not particularly limited, and may be, for example, from 5 ⁇ m to 25 ⁇ m.
  • the average fiber diameter may be 20 ⁇ m or less, may be 18 ⁇ m or less, or may be 15 ⁇ m or less.
  • the average fiber diameter may be 7 ⁇ m or more, or may be 10 ⁇ m or more.
  • the average fiber diameter can be determined in the following manner. Ten test pieces of 10 mm ⁇ 10 mm are collected from the obtained spunbonded non-woven fabric, and the diameters of fibers are read to one decimal place in a unit of ⁇ m using an ECLIPSE E400 manufactured by NIKON CORPORATION at a magnification of 20 times. The diameters of optional 20 places in each test piece are measured, and the average value thereof is determined.
  • the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure may be a single-layered non-woven fabric, or may be a multilayered non-woven fabric (non-woven fabric layered body) in which plural layers are layered one on another.
  • the non-woven fabric layered body may be, for example, a layered body in which two or more spunbonded non-woven fabric layers are layered one on another.
  • the manufacturing method of the present disclosure may include a step of layering a crimped fiber formed by melt-spinning a thermoplastic polymer on a non-woven web formed in the step (1) of pressing the crimped fiber, and then pressing the non-woven web, on which the crimped fiber is layered, at a linear pressure of from 5.1 N/mm or more to 7.0 N/mm or less by a compaction roll, wherein the thermoplastic polymer includes an olefinic polymer including a propylene-based polymer.
  • a non-woven fabric layered body including two spunbonded non-woven fabric layers can be manufactured.
  • the preferred conditions of the step (2) of pressing the crimped fiber are similar to the preferred conditions of the step (1) of pressing the crimped fiber, and therefore, the descriptions thereof are omitted.
  • a non-woven fabric layered body including three or more spunbonded non-woven fabric layers may be manufactured by repeating the step (2) of pressing the crimped fiber.
  • the manufacturing method of the present disclosure may include a step of subjecting a non-woven web to heating and pressurization treatment to entangle the non-woven web after the step (1) of pressing the crimped fiber.
  • the step of subjecting the non-woven web to the heating and pressurization treatment to entangle the non-woven web may be included after the step (2) of pressing the crimped fiber.
  • Fig. 1 is a schematic view illustrating an example of an apparatus for manufacturing the non-woven fabric layered body of the present disclosure.
  • the non-woven fabric manufacturing apparatus 100 illustrated in Fig. 1 includes a first spinning unit 11A and a second spinning unit 11B.
  • the first spinning unit 11A and the second spinning unit 11B include the same component portions.
  • the same component portions in the first spinning unit 11A and the second spinning unit 11B are denoted by the same reference characters, and the descriptions thereof are omitted.
  • the non-woven fabric manufacturing apparatus 100 includes first extruders 31A configured to extrude a thermoplastic polymer, second extruders 31B configured to extrude a thermoplastic polymer, spinnerets 33 that melt-spin melted thermoplastic polymers, ejectors 37 that draw continuous fiber assemblies 20 (20A, 20B) melt-spun from the spinnerets 33, a movable collecting member 51 configured to collect the drawn continuous fiber assemblies 20, suction units 39 configured to efficiently collect the continuous fiber assemblies 20 on the movable collecting member 51, compaction rolls 41 and 42 that press the continuous fiber assemblies 20, an embossing roll 53 and a flat roll 55 for thermocompression bonding, and a winder 71 that winds a non-woven fabric layered body 60 subjected to the thermocompression bonding.
  • the compaction rolls 41 and 42 are rollers for performing pretreatment for integrating light fibers with each other to allow the fibers to endure a post-step (for example, thermocompression bonding by the embossing roll 53
  • thermoplastic polymer is melt-spun from the spinneret 33, to form the continuous fiber assembly 20A, in the first spinning unit 11A.
  • the continuous fiber assembly 20A which is a crimped fiber is obtained by extruding a first thermoplastic polymer from the first extruder 31A, extruding a second thermoplastic polymer from the second extruder 31B, and performing composite spinning.
  • the continuous fiber assembly 20A is cooled by cooling air 35, and is drawn by the ejector 37.
  • the drawn continuous fiber assembly 20A is efficiently collected on the movable collecting member 51 by the suction unit 39 disposed in the lower portion of the collecting face of the movable collecting member 51.
  • a first non-woven web 40A is formed by pressing the collected continuous fiber assembly 20A at a linear pressure of 5.1 N/mm or more by the compaction roll 41 in a vertically upper side and the compaction roll 42 in a vertically lower side.
  • the continuous fiber assembly 20B is also formed in a similar manner.
  • the continuous fiber assembly 20B is layered on the first non-woven web 40A.
  • the first non-woven web 40A on which the continuous fiber assembly 20B is layered is pressed at a linear pressure of 5.1 N/mm or more by the compaction rolls 41 and 42, whereby a second non-woven web 40B is formed to form a non-woven web having a layered structure.
  • the first non-woven web 40A is a lower-layer non-woven web layer
  • the second non-woven web 40B is an upper-layer non-woven web layer.
  • the non-woven web having the layered structure is thermocompression-bonded by the embossing roll 53, to obtain the non-woven fabric layered body 60 including two spunbonded non-woven fabric layers. Then, the non-woven fabric layered body 60 is wound by the winder 71.
  • a manufacturing apparatus including a spinning unit 12 in which a cooling chamber illustrated in Fig. 2 has a closed-type structure may be used.
  • Fig. 2 is a schematic view illustrating another example of the apparatus for manufacturing the non-woven fabric layered body of the present disclosure.
  • Fig. 2 illustrates the apparatus in which the spinning units 11 (the spinning unit 11A and the spinning unit 11B) in the non-woven fabric manufacturing apparatus 100 illustrated in Fig. 1 are replaced with the spinning unit 12.
  • the apparatus configuration other than the spinning units 11 is identical to that of the manufacturing apparatus illustrated in Fig. 1 .
  • the same component portions as those of the manufacturing apparatus illustrated in Fig. 1 are denoted by the same reference characters, and the descriptions thereof are omitted.
  • the compaction rolls 41 and 42 are omitted in Fig. 2 .
  • the spinning unit 12 includes a first extruder 32A configured to extrude a first thermoplastic polymer, a second extruder 32B configured to extrude a second thermoplastic polymer, a spinneret 34 that melt-spins the melted first thermoplastic polymer and second thermoplastic polymer, a cooling chamber 38C that cools a continuous fiber assembly 22 melt-spun from the spinneret 34, cooling air supply units 38A and 38B configured to supply cooling air 36, and a drawing unit 38D configured to draw the continuous fiber assembly 22.
  • the first thermoplastic polymer and the second thermoplastic polymer are extruded and introduced into the spinneret 34. Then, the melted first thermoplastic polymer and second thermoplastic polymer are melt-spun from the spinneret 34.
  • the melt-spun continuous fiber assembly 22 is introduced into the cooling chamber 38C.
  • the continuous fiber assembly 22 is cooled by the cooling air 36 supplied from either or both of the cooling air supply unit 38A and the cooling air supply unit 38B.
  • the cooled continuous fiber assembly 22 is introduced into the drawing unit 38D included downstream of the cooling chamber 38C.
  • the drawing unit 38D is disposed in a bottleneck shape.
  • the continuous fiber assembly 22 introduced into the drawing unit 38D is drawn by increasing the velocity of the cooling air in the bottleneck.
  • the drawn continuous fiber assembly 22 is dispersed and collected on a movable collecting member 51.
  • the dispersed continuous fiber assembly 22 is efficiently collected on the movable collecting member 51 by a suction unit 39 included in the lower portion of the collecting face of movable collecting member 51, to form a non-woven web 43.
  • the spunbonded non-woven fabric of the present disclosure satisfies at least one of the following (1) or (2) in a case in which a region of 150 mm ⁇ 150 mm on a surface is subjected to a rubbing test in conformity with the rubbing fastness test method of JIS L 0849 (2013) using a Gakushin-type rubbing fastness test machine.
  • the spunbonded non-woven fabric of the present disclosure has excellent fuzz resistance without the deterioration of flexibility.
  • the spunbonded non-woven fabric of the present disclosure can be manufactured by, for example, the above-described manufacturing method of the present disclosure.
  • the preferred conditions of the spunbonded non-woven fabric of the present disclosure are similar to those of the spunbonded non-woven fabric obtained by the above-described manufacturing method of the present disclosure, and therefore, the descriptions thereof are omitted.
  • the method of the rubbing test will be described in detail with reference to the following Examples.
  • the spunbonded non-woven fabric of the present disclosure may be a layered body including the spunbonded non-woven fabric of the present disclosure.
  • the layered body may be a structure in which the spunbonded non-woven fabric of the present disclosure and another layer except the spunbonded non-woven fabric of the present disclosure are layered one on another.
  • the other layer may be one layer, or may be two or more layers.
  • Examples of the other layer include fiber aggregates such as knitted fabrics, woven fabrics, and non-woven fabrics (short-fiber non-woven fabrics and long-fiber non-woven fabrics) other than the spunbonded non-woven fabric of the present disclosure.
  • Examples of the non-woven fabrics other than the spunbonded non-woven fabric of the present disclosure include various known non-woven fabrics (spunbonded non-woven fabrics, melt-blown non-woven fabrics, wet-laid non-woven fabrics, dry-laid non-woven fabrics, dry-laid pulp non-woven fabrics, flash-spun non-woven fabrics, open non-woven fabrics, and the like).
  • Such a fiber aggregate may be a sheet-like article with natural fibers such as cotton.
  • Examples of the other layer also include resin films such as polyolefin, polyester, and polyamide. These may be layered in combination.
  • the spunbonded non-woven fabric of the present disclosure, a resin film, and a fiber aggregate with natural fibers such as cotton may be layered in the order mentioned above.
  • an air-permeable film or a moisture-vapor-permeable film is preferred as a film layered with the spunbonded non-woven fabric of the present disclosure.
  • the air-permeable film examples include various known air-permeable films. Examples thereof include a film with a thermoplastic elastomer such as a polyurethane-based elastomer, a polyester-based elastomer, or a polyamide-based elastomer, having moisture vapor permeability, and a porous film formed by drawing a thermoplastic resin film including inorganic particles or organic particles and allowing the thermoplastic resin film to be porous.
  • a thermoplastic elastomer such as a polyurethane-based elastomer, a polyester-based elastomer, or a polyamide-based elastomer, having moisture vapor permeability
  • a porous film formed by drawing a thermoplastic resin film including inorganic particles or organic particles and allowing the thermoplastic resin film to be porous.
  • thermoplastic resin used in the porous film examples include polyolefins such as high-pressure low-density polyethylenes, linear low-density polyethylenes (so-called LLDPEs), high-density polyethylenes, polypropylenes, polypropylene random copolymers, and combinations thereof.
  • polyolefins such as high-pressure low-density polyethylenes, linear low-density polyethylenes (so-called LLDPEs), high-density polyethylenes, polypropylenes, polypropylene random copolymers, and combinations thereof.
  • thermoplastic resin film which is not allowed to be porous, with one or more selected from a polyolefin (a polyethylene, a polypropylene, or the like), a polyester, or a polyamide may be used.
  • a polyolefin a polyethylene, a polypropylene, or the like
  • polyester a polyamide
  • a method of further layering (affixing) the other layer on the spunbonded non-woven fabric of the present disclosure is not particularly limited, and examples thereof include various methods such as a thermal fusion method such as hot embossing, and ultrasonic wave fusion, a mechanical entanglement method such as a needle punch or a water jet, a method using an adhesive such as a hot-melt adhesive or a urethane-based adhesive, and extrusion lamination.
  • test pieces of 100 mm (machine direction: MD) ⁇ 100 mm (direction orthogonal to machine direction: CD) were collected from an obtained non-woven fabric layered body. Places at which the test pieces were collected were set at ten places in the CD direction. Then, the mass [g] of each collected test piece was measured using an electronic balance scale (manufactured by Kensei Co., LTD.). The average value of the masses of the test pieces was determined. The determined average value was converted into a mass [g] per m 2 , which was rounded off to one decimal place to obtain a value, which was regarded as the basis weight [g/m 2 ] of each non-woven fabric layered body sample.
  • MD machine direction
  • CD direction orthogonal to machine direction
  • test pieces of 100 mm (MD) ⁇ 100 mm (CD) were collected from the obtained non-woven fabric layered body. Places at which the test pieces were collected were set at places similar to the test pieces for measuring the basis weight. Then, the thickness [mm] of each collected test piece was measured by a method described in JIS L 1096: 2010, using a load-type thickness gauge (manufactured by OZAKI MFG. CO., LTD.). The average value of the thicknesses of the test pieces was determined, and rounded off to one decimal place to obtain a value, which was regarded as the thickness [mm] of each non-woven fabric layered body sample.
  • the bending resistance [mm] of the non-woven fabric layered body was measured by conducting a cantilever test by the following method.
  • the criteria for the evaluation of the fuzz are as follows. An evaluation point of 3 or more (Grade 3 or more) exhibits excellent fuzz resistance.
  • thermoplastic polymer as the following core component and a thermoplastic polymer as the following sheath component were compositely melt-spun by spunbonding.
  • Eccentric core-sheath type crimped composite fibers having a core component/sheath component mass ratio of 15/85 were deposited on a movable collecting surface.
  • the crimped composite fibers were pressed at a linear pressure of 5.5 N/mm using a compaction roll at 100°C, to form a first spunbonded non-woven web (first layer).
  • eccentric core-sheath type crimped composite fibers obtained under conditions similar to such conditions described above were deposited on the first spunbonded non-woven web, and the first spunbonded non-woven web on which the crimped composite fibers were deposited was pressed at a linear pressure of 5.5 N/mm using a compaction roll at 100°C, to form a second spunbonded non-woven web (second layer).
  • a layered structure having a two-layer structure was thermocompression-bonded at 150°C so that a flat roll came into contact with a side closer to the first spunbonded non-woven web, and an embossing roll came into contact with a side closer to the second spunbonded non-woven web, to obtain a non-woven fabric layered body (spunbonded non-woven fabric layer/spunbonded non-woven fabric layer).
  • the total basis weight of the non-woven fabric layered body was 27.0 g/m 2 , and the area rate of a pressure bonding portion was 12.9%.
  • Propylene-ethylene random copolymer having an MFR of 60 g/10 minutes, a melting point of 142°C, and an ethylene content of 4% by mass
  • a non-woven fabric layered body was obtained in a manner similar to the manner of Example 1 except that a linear pressure at which crimped composite fibers, a first spunbonded non-woven web in which the crimped composite fibers were deposited, and a layered structure in which the crimped composite fibers were deposited were pressed using a compaction roll was changed from 5.5 N/mm to 5.8 N/mm.
  • the total basis weight of the non-woven fabric layered body was 27.0 g/m 2 , and the area rate of a pressure bonding portion was 12.9%.
  • a non-woven fabric layered body was obtained in a manner similar to the manner of Example 1 except that a linear pressure at which crimped composite fibers, a first spunbonded non-woven web in which the crimped composite fibers were deposited, and a layered structure in which the crimped composite fibers were deposited were pressed using a compaction roll was changed from 5.5 N/mm to 4.8 N/mm.
  • the total basis weight of the non-woven fabric layered body was 27.0 g/m 2 , and the area rate of a pressure bonding portion was 12.9%.
  • the non-woven fabric layered bodies obtained in Examples 1 and 2 exhibited the evaluations of the fuzz, superior to that of the non-woven fabric layered body obtained in Comparative Example 1, and were superior in fuzz resistance.
  • the non-woven fabric layered bodies obtained in Examples 1 and 2 had flexibility similar to the flexibility of the non-woven fabric layered body obtained in Comparative Example 1, and fuzz was able to be suppressed without deteriorating flexibility in Examples 1 and 2.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Laminated Bodies (AREA)
EP19740472.6A 2019-02-18 2019-02-18 Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric Active EP3722477B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/005885 WO2020170311A1 (ja) 2019-02-18 2019-02-18 スパンボンド不織布の製造方法及びスパンボンド不織布

Publications (3)

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EP3722477A1 EP3722477A1 (en) 2020-10-14
EP3722477A4 EP3722477A4 (en) 2021-03-31
EP3722477B1 true EP3722477B1 (en) 2022-04-27

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JP (1) JP6533025B1 (zh)
KR (1) KR102565495B1 (zh)
CN (1) CN113474504B (zh)
DK (1) DK3722477T3 (zh)
MY (1) MY194599A (zh)
WO (1) WO2020170311A1 (zh)

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CN114657701B (zh) * 2022-03-28 2023-04-18 厦门当盛新材料有限公司 一种微波热合闪蒸纺丝无纺布工艺方法、微波热合装置以及无纺布制备设备

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US3855046A (en) 1970-02-27 1974-12-17 Kimberly Clark Co Pattern bonded continuous filament web
JPH06108356A (ja) 1992-09-25 1994-04-19 Kuraray Co Ltd 連続マルチフィラメントウェブの走行安定化方法
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US6454989B1 (en) 1998-11-12 2002-09-24 Kimberly-Clark Worldwide, Inc. Process of making a crimped multicomponent fiber web
US20040097154A1 (en) 2002-11-19 2004-05-20 Vishal Bansal Multi-layer mechanically needed spunbond fabric and process for making
EP3246444A1 (en) 2016-05-18 2017-11-22 Fibertex Personal Care A/S Method for making a high loft nonwoven web

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JPS6313256A (ja) * 1986-07-03 1988-01-20 Canon Inc 照明装置
US5810954A (en) * 1996-02-20 1998-09-22 Kimberly-Clark Worldwide, Inc. Method of forming a fine fiber barrier fabric with improved drape and strength of making same
JP3535064B2 (ja) * 2000-03-07 2004-06-07 カネボウ株式会社 熱可塑性エラストマー不織布ロールの製造方法並びに製造装置
MXPA03006656A (es) * 2001-01-29 2003-10-24 Mitsui Chemicals Inc Tela no tejida de fibras rizadas y laminado del mismo.
JP2003147671A (ja) * 2001-11-09 2003-05-21 Kobe Steel Ltd 連続マルチフィラメントウェブ製造装置及び製造方法
WO2008099823A1 (ja) * 2007-02-13 2008-08-21 Toyo Boseki Kabushiki Kaisha 長繊維不織布およびそれを用いた繊維資材
JP6034022B2 (ja) * 2011-12-27 2016-11-30 旭化成株式会社 不織布積層体
JP5888495B2 (ja) * 2012-01-11 2016-03-22 東洋紡株式会社 柔軟性および耐摩耗性に優れた長繊維不織布およびその用途
ES2676305T5 (es) * 2015-02-04 2023-03-16 Reifenhaeuser Masch Procedimiento para la fabricación de un laminado y laminado

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3855046A (en) 1970-02-27 1974-12-17 Kimberly Clark Co Pattern bonded continuous filament web
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
JPH06108356A (ja) 1992-09-25 1994-04-19 Kuraray Co Ltd 連続マルチフィラメントウェブの走行安定化方法
US6454989B1 (en) 1998-11-12 2002-09-24 Kimberly-Clark Worldwide, Inc. Process of making a crimped multicomponent fiber web
US20040097154A1 (en) 2002-11-19 2004-05-20 Vishal Bansal Multi-layer mechanically needed spunbond fabric and process for making
EP3246444A1 (en) 2016-05-18 2017-11-22 Fibertex Personal Care A/S Method for making a high loft nonwoven web

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KR20210096220A (ko) 2021-08-04
CN113474504B (zh) 2023-04-18
KR102565495B1 (ko) 2023-08-09
DK3722477T3 (da) 2022-05-16
JPWO2020170311A1 (ja) 2021-03-11
MY194599A (en) 2022-12-06
EP3722477A4 (en) 2021-03-31
JP6533025B1 (ja) 2019-06-19
CN113474504A (zh) 2021-10-01
EP3722477A1 (en) 2020-10-14
WO2020170311A1 (ja) 2020-08-27

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