EP3722477A1 - 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 PDFInfo
- Publication number
- EP3722477A1 EP3722477A1 EP19740472.6A EP19740472A EP3722477A1 EP 3722477 A1 EP3722477 A1 EP 3722477A1 EP 19740472 A EP19740472 A EP 19740472A EP 3722477 A1 EP3722477 A1 EP 3722477A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- woven fabric
- manufacturing
- spunbonded non
- crimped fiber
- woven
- 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.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 130
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 54
- 239000000835 fiber Substances 0.000 claims abstract description 109
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 27
- 238000005056 compaction Methods 0.000 claims abstract description 25
- 238000002074 melt spinning Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 31
- 229920000642 polymer Polymers 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 16
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims description 16
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000010998 test method Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 23
- 239000002131 composite material Substances 0.000 description 20
- 238000009987 spinning Methods 0.000 description 17
- 238000001816 cooling Methods 0.000 description 12
- 238000011156 evaluation Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000004049 embossing Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 239000000306 component Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 229920002647 polyamide Polymers 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000035699 permeability Effects 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- -1 polypropylenes Polymers 0.000 description 4
- 229920005604 random copolymer Polymers 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000000806 elastomer Substances 0.000 description 3
- 239000012567 medical material Substances 0.000 description 3
- 229920000098 polyolefin Polymers 0.000 description 3
- 239000004711 α-olefin Substances 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 2
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920000092 linear low density polyethylene Polymers 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001384 propylene homopolymer Polymers 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000000783 alginic acid Substances 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 239000002981 blocking agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- HJUFTIJOISQSKQ-UHFFFAOYSA-N fenoxycarb Chemical compound C1=CC(OCCNC(=O)OCC)=CC=C1OC1=CC=CC=C1 HJUFTIJOISQSKQ-UHFFFAOYSA-N 0.000 description 1
- 239000004751 flashspun nonwoven Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003906 humectant Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 238000007500 overflow downdraw method Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920005630 polypropylene random copolymer Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229920002725 thermoplastic elastomer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- 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, and to 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 1 Japanese Patent Application Laid-Open ( JP-A) No. 2018-24965
- 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 spunbonded non-woven fabric without deteriorated flexibility and with excellent fuzz resistance and a method of manufacturing the spunbonded non-woven fabric are 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 5 N/mm or more by a compaction roll (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 5 N/mm or more 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 5 N/mm or more 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 preferably 5.1 N/mm or more, and more preferably 5.2 N/mm or more, from the viewpoint of fuzz resistance.
- the linear pressure at which the crimped fiber is pressed is preferably 10 N/mm or less, more preferably 7.0 N/mm or less, still more preferably 6.5 N/mm or less, and particularly 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 is not particularly limited as long as the thermoplastic polymer can form a spunbonded non-woven fabric.
- the thermoplastic polymer include an olefinic polymer, 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 preferably includes an olefinic polymer, and more 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 5 N/mm or more by a compaction roll.
- 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 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 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.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
- The present disclosure relates to a method of manufacturing a spunbonded non-woven fabric, and to a spunbonded non-woven fabric.
- In recent years, 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.
- In particular, long-fiber non-woven fabrics obtained by spunbonding have been applied to, for example, 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), 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.
- For example, Patent Document 1 proposes a method of manufacturing a spunbonded high-loft non-woven web including crimped multicomponent fibers excellent in flexibility.
- Patent Document 1: Japanese Patent Application Laid-Open (
JP-A) No. 2018-24965 - Applications such as absorbent articles and medical materials require resistance to fuzz, i.e., excellent fuzz resistance, as well as high flexibility. The manufacturing method described in Patent Document 1 has room for improvement in fuzz resistance.
- 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.
-
- <1> A method of manufacturing a spunbonded non-woven fabric, the method comprising: 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 5 N/mm or more by a compaction roll.
- <2> The method of manufacturing a spunbonded non-woven fabric according to <1>, wherein a temperature of the compaction roll while pressing the crimped fiber is from 80°C to 120°C.
- <3> The method of manufacturing a spunbonded non-woven fabric according to <1>, wherein a temperature of the compaction roll while of pressing the crimped fiber is lower than a melting point of the crimped fiber.
- <4> The method of manufacturing a spunbonded non-woven fabric according to any one of <1> to <3>, wherein the linear pressure is 10 N/mm or less.
- <5> The method of manufacturing a spunbonded non-woven fabric according to any one of <1> to <4>, wherein the thermoplastic polymer comprises an olefinic polymer.
- <6> The method of manufacturing a spunbonded non-woven fabric according to <5>, wherein the olefinic polymer comprises a propylene-based polymer.
- <7> The method of manufacturing a spunbonded non-woven fabric according to any one of <1> to <6>, further comprising a step of layering a crimped fiber formed by melt-spinning a thermoplastic polymer on a non-woven web that is formed in the pressing step, and then pressing the non-woven web, on which the crimped fiber is layered, at a linear pressure of 5 N/mm or more by the compaction roll, to manufacture a non-woven fabric layered body comprising a plurality of spunbonded non-woven fabric layers.
- <8> A spunbonded non-woven fabric satisfying 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 a rubbing fastness test method of JIS L 0849 (2013) using a Gakushin-type rubbing fastness test machine:
- (1) in the region, a number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and a number of fluffs having an equivalent circle diameter of from 0.8 mm to less than 2.0 mm is one or less; and
- (2) in the region, the number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and a number of fluffs having an equivalent circle diameter of from 0.1 mm to less than 0.8 mm is nine or less.
- In accordance with the present disclosure, a spunbonded non-woven fabric without deteriorated flexibility and with excellent fuzz resistance, and a method of manufacturing the spunbonded non-woven fabric are provided.
-
-
Fig. 1 is a schematic view illustrating an example of an apparatus for manufacturing a non-woven fabric layered body of the present disclosure. -
Fig. 2 is a schematic view illustrating another example of the apparatus for manufacturing a non-woven fabric layered body of the present disclosure. - An example of a preferred embodiment in the present disclosure will be described in detail below. Such descriptions and Examples are intended to exemplify embodiments, and are not intended to limit the scope of the embodiments.
- In the present disclosure, 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.
- In the present disclosure, the term "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.
- In the present disclosure, in a case in which plural kinds of substances corresponding to each constituent are present, the content of each constituent in a composition means the total amount of the plural kinds of the substances unless otherwise specified.
- In the present disclosure, 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 5 N/mm or more by a compaction roll (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 5 N/mm or more 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.
- The 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 5 N/mm or more 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 preferably 5.1 N/mm or more, and more preferably 5.2 N/mm or more, from the viewpoint of fuzz resistance.
- The linear pressure at which the crimped fiber is pressed is preferably 10 N/mm or less, more preferably 7.0 N/mm or less, still more preferably 6.5 N/mm or less, and particularly 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 is not particularly limited as long as the thermoplastic polymer can form a spunbonded non-woven fabric. Examples of the thermoplastic polymer include an olefinic polymer, 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, and the polyamide-based polymer is a polymer including an amide as a structural unit. In the present disclosure, the thermoplastic polymer is a concept encompassing a thermoplastic polymer composition.
- Of these, the thermoplastic polymer preferably includes an olefinic polymer, and more 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 α-olefins having from 2 to 8 carbon atoms). Specific examples of preferred α-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 α-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.
- Of these, 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.
- In a similar viewpoint, it is still more preferable that in the crimped composite fiber, the propylene-based polymer 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. In the present disclosure, 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.
- In a case in which the crimped composite fiber is a core-sheath type, examples of a preferred embodiment of a mass ratio between a sheath portion and a core portion (core portion/sheath 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. Examples of 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/m2 to 30 g/m2, may be from 20 g/m2 to 30 g/m2, and may be from 25 g/m2 to 30 g/m2.
- 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 µm to 25 µm. The average fiber diameter may be 20 µm or less, may be 18 µm or less, or may be 15 µm or less. The average fiber diameter may be 7 µm or more, or may be 10 µm or more. In the present disclosure, 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 µm 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 5 N/mm or more by a compaction roll. As a result, 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. In a case in which the spunbonded non-woven fabric obtained by the manufacturing method of the present disclosure is a non-woven fabric layered body, 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.
- The method of manufacturing the non-woven fabric layered body of the present disclosure is described with reference to
Fig. 1. 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-wovenfabric manufacturing apparatus 100 illustrated inFig. 1 includes afirst spinning unit 11A and asecond spinning unit 11B. Thefirst spinning unit 11A and thesecond spinning unit 11B include the same component portions. The same component portions in thefirst spinning unit 11A and thesecond spinning unit 11B are denoted by the same reference characters, and the descriptions thereof are omitted. - The non-woven
fabric manufacturing apparatus 100 includesfirst 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 thespinnerets 33, a movable collectingmember 51 configured to collect the drawncontinuous fiber assemblies 20,suction units 39 configured to efficiently collect thecontinuous fiber assemblies 20 on the movable collectingmember 51, compaction rolls 41 and 42 that press thecontinuous fiber assemblies 20, anembossing roll 53 and aflat roll 55 for thermocompression bonding, and awinder 71 that winds a non-woven fabric layeredbody 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). - First, the thermoplastic polymer is melt-spun from the
spinneret 33, to form thecontinuous fiber assembly 20A, in thefirst spinning unit 11A. Thecontinuous fiber assembly 20A which is a crimped fiber is obtained by extruding a first thermoplastic polymer from thefirst extruder 31A, extruding a second thermoplastic polymer from thesecond extruder 31B, and performing composite spinning. Then, thecontinuous fiber assembly 20A is cooled by coolingair 35, and is drawn by theejector 37. The drawncontinuous fiber assembly 20A is efficiently collected on the movable collectingmember 51 by thesuction unit 39 disposed in the lower portion of the collecting face of the movable collectingmember 51. A firstnon-woven web 40A is formed by pressing the collectedcontinuous fiber assembly 20A at a linear pressure of 5 N/mm or more by thecompaction roll 41 in a vertically upper side and thecompaction roll 42 in a vertically lower side. - In the
second spinning unit 11B, thecontinuous fiber assembly 20B is also formed in a similar manner. Thecontinuous fiber assembly 20B is layered on the firstnon-woven web 40A. The firstnon-woven web 40A on which thecontinuous fiber assembly 20B is layered is pressed at a linear pressure of 5 N/mm or more by the compaction rolls 41 and 42, whereby a secondnon-woven web 40B is formed to form a non-woven web having a layered structure. The firstnon-woven web 40A is a lower-layer non-woven web layer, and the secondnon-woven web 40B is an upper-layer non-woven web layer. The non-woven web having the layered structure is thermocompression-bonded by theembossing roll 53, to obtain the non-woven fabric layeredbody 60 including two spunbonded non-woven fabric layers. Then, the non-woven fabric layeredbody 60 is wound by thewinder 71. - In the method of manufacturing the non-woven fabric layered body of the present disclosure, a manufacturing apparatus including a
spinning unit 12 in which a cooling chamber illustrated inFig. 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 (thespinning unit 11A and thespinning unit 11B) in the non-wovenfabric manufacturing apparatus 100 illustrated inFig. 1 are replaced with the spinningunit 12. In other words, the apparatus configuration other than the spinningunits 11 is identical to that of the manufacturing apparatus illustrated inFig. 1 . The same component portions as those of the manufacturing apparatus illustrated inFig. 1 are denoted by the same reference characters, and the descriptions thereof are omitted. The compaction rolls 41 and 42 are omitted inFig. 2 . - The spinning
unit 12 includes afirst extruder 32A configured to extrude a first thermoplastic polymer, asecond extruder 32B configured to extrude a second thermoplastic polymer, aspinneret 34 that melt-spins the melted first thermoplastic polymer and second thermoplastic polymer, acooling chamber 38C that cools acontinuous fiber assembly 22 melt-spun from thespinneret 34, coolingair supply units air 36, and adrawing unit 38D configured to draw thecontinuous fiber assembly 22. - In the
spinning unit 12, the first thermoplastic polymer and the second thermoplastic polymer are extruded and introduced into thespinneret 34. Then, the melted first thermoplastic polymer and second thermoplastic polymer are melt-spun from thespinneret 34. The melt-spuncontinuous fiber assembly 22 is introduced into thecooling chamber 38C. Thecontinuous fiber assembly 22 is cooled by the coolingair 36 supplied from either or both of the coolingair supply unit 38A and the coolingair supply unit 38B. The cooledcontinuous fiber assembly 22 is introduced into thedrawing unit 38D included downstream of thecooling chamber 38C. Thedrawing unit 38D is disposed in a bottleneck shape. Thecontinuous fiber assembly 22 introduced into thedrawing unit 38D is drawn by increasing the velocity of the cooling air in the bottleneck. The drawncontinuous fiber assembly 22 is dispersed and collected on a movable collectingmember 51. The dispersedcontinuous fiber assembly 22 is efficiently collected on the movable collectingmember 51 by asuction unit 39 included in the lower portion of the collecting face of movable collectingmember 51, to form anon-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.
- (1) In the region, the number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and the number of fluffs having an equivalent circle diameter of from 0.8 mm to less than 2.0 mm is one or less.
- (2) In the region, the number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and the number of fluffs having an equivalent circle diameter of from 0.1 mm to less than 0.8 mm is nine or less.
- 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. In other words, 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. For example, 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.
- In a case in which the layered body requires air permeability, 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.
- Examples of the air-permeable film 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. Examples of the thermoplastic resin used in the porous film 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.
- In a case in which the layered body does not require air permeability, a 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 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.
- The invention will be further specifically described with reference to Examples. However, the invention is not limited to these Examples. In the following Examples, "%" represents "% by mass".
- Physical property values and the like in Examples and Comparative Example were measured by the following methods.
- Ten 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 m2, which was rounded off to one decimal place to obtain a value, which was regarded as the basis weight [g/m2] of each non-woven fabric layered body sample.
- The results are set forth in Table 1.
- Ten 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 results are set forth in Table 1.
- The bending resistance [mm] of the non-woven fabric layered body was measured by conducting a cantilever test by the following method.
- Specifically, in accordance with 8.19.1 [A method (45-degree cantilever method)] of JIS-L1096: 2010, the bending resistance was measured in each of the MD direction and the CD direction, and the average value thereof was regarded as the bending resistance of the non-woven fabric layered body.
- The results are set forth in Table 2.
- Two CD test pieces of 150 mm (MD) × 150 mm (CD) were collected from each non-woven fabric. Collection places were set at optional two places. Then, each collected test piece was subjected to a rubbing test according to a rubbing fastness test method of JIS L 0849 using a Gakushin-type rubbing fastness test machine (New Type of NR-100, manufactured by DAIEI KAGAKU SEIKI MFG. CO., LTD.). A fabric tape (No. 1532, manufactured by TERAOKA SEISAKUSHO CO., LTD.) was affixed to a rubbing block side, a non-embossment surface was rubbed in 100 to-and-fro movements in the MD direction in the state of the application of a load of 300 g, the fuzz state of the rubbed surface of each test piece was graded based on the following criteria, and a worse grade was regarded as the fuzz [evaluation point] of each non-woven fabric sample.
- The results are set forth in Table 2.
- 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.
-
- Grade 1: A fiber is stripped off, and a hole is opened, whereby a test piece is damaged.
- Grade 2: In a case in which a test piece is a layered body, a surface layer is peeled, and the test piece is thinned, whereby it is possible to see a back layer, or in a case in which the test piece is a single-layered body, a fiber is considerably stripped off.
- Grade 2.5: It is possible to clearly see a large fluff (diameter: 2 mm or more), and fibers begin to rise at plural spots.
- Grade 3: A clear fluff (diameter: 0.8 mm or more) begins to be generated, or plural small fluffs (diameter: less than 0.8 mm) are seen.
- Grade 3.5: Fuzz occurs, whereby a small fluff (diameter: from 0.1 mm to less than 0.8 mm) begins to be generated at one place.
- Grade 4: No fuzz
- A 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). Then, 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/m2, and the area rate of a pressure bonding portion was 12.9%.
- Propylene homopolymer having an MFR of 60 g/10 minutes and a melting point of 162°C
- 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/m2, 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/m2, and the area rate of a pressure bonding portion was 12.9%.
[Table 1] Basis Weight Thickness g/m2 mm Example 1 27.0 0.41 Example 2 27.0 0.42 Comparative Example 1 27.0 0.44 [Table 2] Bending Resistance Fuzz Cantilever Method mm Evaluation Example 1 47 3.5 Example 2 47 3.5 Comparative Example 1 47 2 - On the basis of the results, 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.
- All documents, patent applications, and technical standards described in this specification are herein incorporated by reference to the same extent as if each individual document, patent application, or technical standard was specifically and individually indicated to be incorporated by reference.
Claims (8)
- A method of manufacturing a spunbonded non-woven fabric, the method comprising:a step of melt-spinning a thermoplastic polymer to form a crimped fiber; anda step of collecting the crimped fiber and pressing the collected crimped fiber at a linear pressure of 5 N/mm or more by a compaction roll.
- The method of manufacturing a spunbonded non-woven fabric according to claim 1, wherein a temperature of the compaction roll while pressing the crimped fiber is from 80°C to 120°C.
- The method of manufacturing a spunbonded non-woven fabric according to claim 1, wherein a temperature of the compaction roll while of pressing the crimped fiber is lower than a melting point of the crimped fiber.
- The method of manufacturing a spunbonded non-woven fabric according to any one of claims 1 to 3, wherein the linear pressure is 10 N/mm or less.
- The method of manufacturing a spunbonded non-woven fabric according to any one of claims 1 to 4, wherein the thermoplastic polymer comprises an olefinic polymer.
- The method of manufacturing a spunbonded non-woven fabric according to claim 5, wherein the olefinic polymer comprises a propylene-based polymer.
- The method of manufacturing a spunbonded non-woven fabric according to any one of claims 1 to 6, further comprising a step of layering a crimped fiber formed by melt-spinning a thermoplastic polymer on a non-woven web that is formed in the pressing step, and then pressing the non-woven web, on which the crimped fiber is layered, at a linear pressure of 5 N/mm or more by the compaction roll, to manufacture a non-woven fabric layered body comprising a plurality of spunbonded non-woven fabric layers.
- A spunbonded non-woven fabric satisfying 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 a rubbing fastness test method of JIS L 0849 (2013) using a Gakushin-type rubbing fastness test machine:(1) in the region, a number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and a number of fluffs having an equivalent circle diameter of from 0.8 mm to less than 2.0 mm is one or less; and(2) in the region, the number of fluffs having an equivalent circle diameter of 2.0 mm or more is 0, and a number of fluffs having an equivalent circle diameter of from 0.1 mm to less than 0.8 mm is nine or less.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2019/005885 WO2020170311A1 (en) | 2019-02-18 | 2019-02-18 | Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3722477A1 true EP3722477A1 (en) | 2020-10-14 |
EP3722477A4 EP3722477A4 (en) | 2021-03-31 |
EP3722477B1 EP3722477B1 (en) | 2022-04-27 |
Family
ID=66934399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19740472.6A Active EP3722477B1 (en) | 2019-02-18 | 2019-02-18 | Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3722477B1 (en) |
JP (1) | JP6533025B1 (en) |
KR (1) | KR102565495B1 (en) |
CN (1) | CN113474504B (en) |
DK (1) | DK3722477T3 (en) |
MY (1) | MY194599A (en) |
WO (1) | WO2020170311A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114657701B (en) * | 2022-03-28 | 2023-04-18 | 厦门当盛新材料有限公司 | Microwave heat seal flash spinning non-woven fabric process method, microwave heat seal device and non-woven fabric preparation equipment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003147671A (en) * | 2001-11-09 | 2003-05-21 | Kobe Steel Ltd | Continuous multifilament web-manufacturing apparatus and manufacturing method therefor |
JP2013133579A (en) * | 2011-12-27 | 2013-07-08 | Asahi Kasei Fibers Corp | Nonwoven fabric laminate |
EP3246444A1 (en) * | 2016-05-18 | 2017-11-22 | Fibertex Personal Care A/S | Method for making a high loft nonwoven web |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA948388A (en) | 1970-02-27 | 1974-06-04 | Paul B. Hansen | Pattern bonded continuous filament web |
JPS6313256A (en) * | 1986-07-03 | 1988-01-20 | Canon Inc | Lighting equipment |
US5382400A (en) | 1992-08-21 | 1995-01-17 | Kimberly-Clark Corporation | Nonwoven multicomponent polymeric fabric and method for making same |
JPH06108356A (en) | 1992-09-25 | 1994-04-19 | Kuraray Co Ltd | Stabilization of traveling of continuous multifilament web |
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 |
US6454989B1 (en) | 1998-11-12 | 2002-09-24 | Kimberly-Clark Worldwide, Inc. | Process of making a crimped multicomponent fiber web |
JP3535064B2 (en) * | 2000-03-07 | 2004-06-07 | カネボウ株式会社 | Method and apparatus for producing thermoplastic elastomer nonwoven fabric roll |
CN1489655A (en) * | 2001-01-29 | 2004-04-14 | ������ѧ��ʽ���� | Non-woven fibers of wind-shrink fiber and laminates thereof |
US20040097154A1 (en) | 2002-11-19 | 2004-05-20 | Vishal Bansal | Multi-layer mechanically needed spunbond fabric and process for making |
WO2008099823A1 (en) * | 2007-02-13 | 2008-08-21 | Toyo Boseki Kabushiki Kaisha | Long-fiber nonwoven fabric and fiber material using the same |
JP5888495B2 (en) * | 2012-01-11 | 2016-03-22 | 東洋紡株式会社 | Long-fiber nonwoven fabric with excellent flexibility and wear resistance and its use |
DK3054042T4 (en) * | 2015-02-04 | 2023-01-30 | Reifenhaeuser Masch | Method for making a laminate and laminate |
-
2019
- 2019-02-18 EP EP19740472.6A patent/EP3722477B1/en active Active
- 2019-02-18 CN CN201980091464.9A patent/CN113474504B/en active Active
- 2019-02-18 JP JP2019512935A patent/JP6533025B1/en active Active
- 2019-02-18 MY MYPI2021003813A patent/MY194599A/en unknown
- 2019-02-18 WO PCT/JP2019/005885 patent/WO2020170311A1/en unknown
- 2019-02-18 KR KR1020217020392A patent/KR102565495B1/en active IP Right Grant
- 2019-02-18 DK DK19740472.6T patent/DK3722477T3/en active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003147671A (en) * | 2001-11-09 | 2003-05-21 | Kobe Steel Ltd | Continuous multifilament web-manufacturing apparatus and manufacturing method therefor |
JP2013133579A (en) * | 2011-12-27 | 2013-07-08 | Asahi Kasei Fibers Corp | Nonwoven fabric laminate |
EP3246444A1 (en) * | 2016-05-18 | 2017-11-22 | Fibertex Personal Care A/S | Method for making a high loft nonwoven web |
Non-Patent Citations (1)
Title |
---|
See also references of WO2020170311A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN113474504A (en) | 2021-10-01 |
WO2020170311A1 (en) | 2020-08-27 |
JPWO2020170311A1 (en) | 2021-03-11 |
DK3722477T3 (en) | 2022-05-16 |
KR102565495B1 (en) | 2023-08-09 |
CN113474504B (en) | 2023-04-18 |
MY194599A (en) | 2022-12-06 |
EP3722477A4 (en) | 2021-03-31 |
JP6533025B1 (en) | 2019-06-19 |
KR20210096220A (en) | 2021-08-04 |
EP3722477B1 (en) | 2022-04-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DK2677074T3 (en) | SPIN-BOND NON-WOVEN FABRICS | |
WO2012077638A1 (en) | Melt-blown nonwoven fabric, and production method and device for same | |
US11117725B2 (en) | Packaging material for sterilization | |
KR102552774B1 (en) | Spunbond nonwoven fabric, manufacturing method of spunbond nonwoven fabric, emboss roll | |
KR20200130413A (en) | Non-woven and filter | |
JP5181028B2 (en) | Long fiber nonwoven fabric | |
CN113677516A (en) | Nonwoven fabric laminate and sanitary product | |
KR102500062B1 (en) | Spunbond nonwoven fabric, sanitary material, and method for producing spunbond nonwoven fabric | |
EP3722477B1 (en) | Method for producing spun-bonded nonwoven fabric and spun-bonded nonwoven fabric | |
KR102398859B1 (en) | Spunbond Nonwovens, Sanitary Materials, and Methods of Making Spunbond Nonwovens | |
JP2019026955A (en) | Spun-bonded nonwoven fabric | |
JP2019206351A (en) | Packing material for sterilization with surface wear resistance | |
TWI750611B (en) | Non-woven fabrics for packaging materials for sterilization | |
JP7161300B2 (en) | Non-woven fabric for sterilization packaging material with peelability | |
JP2022135776A (en) | Nonwoven fabric, nonwoven fabric laminate, and absorbent article |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190726 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
R17P | Request for examination filed (corrected) |
Effective date: 20190726 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20210302 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D04H 3/007 20120101ALI20210224BHEP Ipc: D04H 3/033 20120101AFI20210224BHEP Ipc: D02J 13/00 20060101ALI20210224BHEP Ipc: D04H 3/147 20120101ALI20210224BHEP |
|
17Q | First examination report despatched |
Effective date: 20210315 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D02G 1/00 20060101ALI20211109BHEP Ipc: D04H 3/147 20120101ALI20211109BHEP Ipc: D02J 13/00 20060101ALI20211109BHEP Ipc: D04H 3/007 20120101ALI20211109BHEP Ipc: D04H 3/033 20120101AFI20211109BHEP |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
INTG | Intention to grant announced |
Effective date: 20211130 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602019014207 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1487004 Country of ref document: AT Kind code of ref document: T Effective date: 20220515 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 Effective date: 20220509 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20220427 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1487004 Country of ref document: AT Kind code of ref document: T Effective date: 20220427 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220829 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220727 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220728 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220727 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220827 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R026 Ref document number: 602019014207 Country of ref document: DE |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
PLAX | Notice of opposition and request to file observation + time limit sent |
Free format text: ORIGINAL CODE: EPIDOSNOBS2 |
|
26 | Opposition filed |
Opponent name: REIFENHAEUSER GMBH & CO. KG MASCHINENFABRIK Effective date: 20230125 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
RAP4 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: MITSUI CHEMICALS, INC. |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
PLBB | Reply of patent proprietor to notice(s) of opposition received |
Free format text: ORIGINAL CODE: EPIDOSNOBS3 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20230228 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20230218 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230218 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230228 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230228 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230218 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220427 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230218 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230218 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20230228 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: MITSUI CHEMICALS ASAHI LIFE MATERIALS CO., LTD. |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240219 Year of fee payment: 6 Ref country code: CZ Payment date: 20240209 Year of fee payment: 6 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20240223 Year of fee payment: 6 |
|
PLBD | Termination of opposition procedure: decision despatched |
Free format text: ORIGINAL CODE: EPIDOSNOPC1 |
|
PLBP | Opposition withdrawn |
Free format text: ORIGINAL CODE: 0009264 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R100 Ref document number: 602019014207 Country of ref document: DE |
|
PLBM | Termination of opposition procedure: date of legal effect published |
Free format text: ORIGINAL CODE: 0009276 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 602019014207 Country of ref document: DE Owner name: MITSUI CHEMICALS ASAHI LIFE MATERIALS CO., LTD, JP Free format text: FORMER OWNER: MITSUI CHEMICALS, INC., TOKYO, JP |