WO2019021809A1 - Fibre frisée, non-tissé filé-lié et procédé de fabrication associé - Google Patents

Fibre frisée, non-tissé filé-lié et procédé de fabrication associé Download PDF

Info

Publication number
WO2019021809A1
WO2019021809A1 PCT/JP2018/025996 JP2018025996W WO2019021809A1 WO 2019021809 A1 WO2019021809 A1 WO 2019021809A1 JP 2018025996 W JP2018025996 W JP 2018025996W WO 2019021809 A1 WO2019021809 A1 WO 2019021809A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber
crimped
nonwoven fabric
producing
present
Prior art date
Application number
PCT/JP2018/025996
Other languages
English (en)
Japanese (ja)
Inventor
遠藤雅紀
勝田大士
羽根亮一
船津義嗣
西村誠
Original Assignee
東レ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 東レ株式会社 filed Critical 東レ株式会社
Priority to KR1020207001091A priority Critical patent/KR20200036848A/ko
Priority to JP2018553270A priority patent/JP7156033B2/ja
Priority to CN201880044374.XA priority patent/CN110832125A/zh
Publication of WO2019021809A1 publication Critical patent/WO2019021809A1/fr

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D—TEXTILES; PAPER
    • 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
    • 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
    • D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the present invention relates to a crimped fiber, a spunbonded nonwoven fabric using the same, a method of producing a crimped fiber, and a method of producing a spunbonded nonwoven fabric.
  • non-woven fabrics for sanitary materials such as disposable diapers and sanitary napkins are required to have excellent performance in terms of bulkiness and flexibility because of the texture when worn.
  • bulkiness is required for a surface member that directly touches the skin.
  • a so-called air-through non-woven fabric in which short fibers represented by polyethylene terephthalate (PET) / polyethylene (PE) composite fiber are sheeted by carding and self-fused by hot air treatment is used. It is used suitably.
  • PET polyethylene terephthalate
  • PE polyethylene
  • the air-through non-woven fabric is widely adopted for sanitary materials and the like because it is characterized by being excellent in bulkiness and flexibility.
  • the air through nonwoven fabric has a problem that the manufacturing process is complicated and the production rate is slow.
  • a spunbond non-woven fabric using polyolefin resin fibers represented by polypropylene (hereinafter sometimes abbreviated as PP) as a raw material is characterized by high productivity and low cost from the process.
  • PP polypropylene
  • Patent Document 1 proposes a crimped conjugate fiber composed of a two-component polymer having a melting point different by 10 ° C. or more.
  • Patent No. 5484564 Unexamined-Japanese-Patent No. 11-292159
  • crimped fibers and spunbonded nonwoven fabrics are conventionally obtained which are low in cost, excellent in industrial productivity and stability, and satisfactory in bulkiness when used suitably as a sanitary material. It is not the current situation.
  • an object of the present invention is to provide crimped fibers and a spunbonded nonwoven fabric which are low in cost and excellent in bulkiness.
  • another object of the present invention is to provide a method for producing crimped fibers and a method for producing a spunbond non-woven fabric, by which the crimped fibers of the present invention can be produced industrially with excellent productivity and stability. It is to provide.
  • the crimped fiber according to the present invention is a fiber composed mainly of polyolefin, which is substantially composed of a single raw material, and has an interface in a cross section perpendicular to the fiber length direction. It is.
  • the spunbonded nonwoven fabric of the present invention is a spunbonded nonwoven fabric comprising the crimped fibers of the present invention.
  • the method for producing a crimped fiber according to the present invention is a method for producing the crimped fiber according to the present invention, wherein the polyolefin resin is discharged from a dumbbell-shaped nozzle having a difference in discharge hole area of two circles. Manufacturing method.
  • the method for producing a spunbonded nonwoven fabric according to the present invention is a method for producing the spunbonded nonwoven fabric according to the present invention, which comprises: crimped fibers obtained by the method for producing crimped fibers according to the present invention It is a manufacturing method of the spun bond nonwoven fabric which sheet-izes by pressure-bonding a fiber using a pair of rolls.
  • crimped fibers and a spunbonded nonwoven fabric excellent in bulkiness can be obtained at low cost.
  • the crimped fiber of the present invention and the spunbonded nonwoven fabric of the present invention can be industrially manufactured by a method excellent in productivity and stability.
  • the crimped fiber of the present invention is a fiber composed mainly of polyolefin and is substantially constituted of a single raw material, and an interface exists in a cross section perpendicular to the fiber length direction.
  • the crimped fiber of the present invention has an interface in a cross section perpendicular to the fiber length direction.
  • the "cross section perpendicular to the fiber length direction" may be simply referred to as "fiber cross section".
  • the interface of the fiber cross-section referred to in the present invention refers to one which can be observed in the form of stripes existing in the fiber cross-section. Since the difference in molecular orientation in the fiber cross section causes a difference in refractive index in the fiber cross section even in a fiber substantially composed of a single raw material, the interface can be observed. Therefore, since the interface referred to in the present invention divides the fiber cross section into two or more, the start point and the end point of the interface exist on the outer periphery of the fiber cross section.
  • the interface in the present invention can be observed when the fiber is fixed with an epoxy resin or the like and a microtome is used to make a very thin sample piece. Since the interface referred to in the present invention can be observed by the structural difference at the molecular chain level, the method of producing the sample piece is important. In preparation of a test piece, it is important not to use a simple razor blade or the like but to use a microtome usually used for microscopic observation such as TEM.
  • FIG. 1 The photograph which illustrates the cross section of the crimped fiber of this invention in FIG. 1 is shown.
  • (A) of FIG. 1 is a cross-sectional photograph of the crimped fiber obtained in Example 1 described later.
  • FIG. 1 (b) is a cross-sectional photograph of a crimped fiber of the present invention different from FIG. 1 (a), obtained using a dumbbell-shaped nozzle. In any cross-sectional photograph, there is an interface 10 of the fiber cross section.
  • FIG. 2 is a schematic diagram of the cross-sectional photograph of (a) of FIG. 1, (b), respectively.
  • the crimped fibers of the present invention consist essentially of a single source.
  • olefin which is the main raw material, not a composite fiber made of so-called two or more components.
  • Commonly used additives such as antioxidants, weather stabilizers, light stabilizers, antistatic agents, antifogging agents, antiblocking agents, lubricants, nucleating agents and pigments are not counted as raw materials of polymers. That is, even if the polymer in which the olefin type is one type contains any of these additives and the like, the polymer is a polymer substantially composed of a single raw material.
  • blend spinning in which a plurality of raw materials are mixed in the state of chips and then spun, is melted by a single extruder or the like and supplied to a spinneret, so in the present invention it is composed of a single raw material Treat as a polymer.
  • “having polyolefin as a main component” means that the content of polyolefin in the crimped fiber is 80% by mass or more.
  • the content is preferably 90% by mass or more, more preferably 95% by mass or more, and particularly preferably 100% by mass.
  • Examples of the polyolefin constituting the crimped fiber and non-woven fabric of the present invention include polyethylene, polypropylene, and copolymers of these monomers with other ⁇ -olefins. Among them, it is preferable to use polypropylene because it is strong, is not easily broken at the time of use, and is excellent in dimensional stability at the time of production of the sanitary material.
  • the polypropylene may be a polymer synthesized by a general Ziegler-Natta catalyst, or may be a polymer synthesized by a single site activated catalyst represented by a metallocene.
  • ethylene random copolymer polypropylene can also be used.
  • the ethylene content is preferably less than 2% by mass, more preferably less than 1% by mass, based on 100% by mass of the whole ethylene random copolymer propylene.
  • an ⁇ -olefin having 3 to 10 carbon atoms is preferable.
  • propylene, 1-butene, 1-pentene, 1-hexane, 4-methyl-1-pentene, 1-octene and the like can be mentioned. These may be used alone or in combination of two or more.
  • homopolypropylene is particularly preferred as the main component.
  • the melt flow rate of polypropylene used in the present invention (hereinafter sometimes referred to as MFR; ASTM D-1238 method A load; 2160 g, temperature; 230 ° C.) is preferably 1 to 1000 g / 10 min, It is more preferably 10 to 500 g / 10 min, and further preferably 20 to 200 g / 10 min.
  • Melt flow rate of polyethylene used in the present invention is preferably 1 to 1000 g / 10 min, 10 to 500 g / 10 min More preferably, it is 15 to 200 g / 10 min.
  • the polypropylenes and polyethylenes used in the present invention are generally used antioxidants, weather stabilizers, light stabilizers, antistatic agents, antifogging agents, antiblocking agents, as long as the effects of the present invention are not impaired.
  • Additives such as lubricants, nucleating agents and pigments or other polymers can be added as required.
  • the spunbonded nonwoven fabric of the present invention comprises the crimped fiber of the present invention.
  • a general non-woven fabric manufacturing method for example, needle-punched non-woven fabric, wet non-woven non-woven fabric, spun lace non-woven fabric, spun-bonded non-woven fabric, melt-blown non-woven fabric, resin-bonded non-woven fabric, chemically bonded non-woven fabric, thermally bonded non-woven fabric, tow-opening type non-woven fabric.
  • various manufacturing methods such as, but in the present invention, it is important that the nonwoven fabric is spunbonded.
  • the spunbond nonwoven fabric is excellent in productivity and mechanical strength, and has characteristics of being less likely to be fluffed compared to the short fiber nonwoven fabric because it is composed of long fibers.
  • the average single fiber fineness of the polyolefin-based fiber is preferably 0.5 dtex or more and 3.5 dtex or less, more preferably 0.7 dtex or more and 3.2 dtex or less, and still more preferably 0. .9 dtex or more and 2.8 dtex or less. From the viewpoint of spinning stability, the average single fiber fineness is preferably 0.5 dtex or more. On the other hand, the thinner the fineness, the more the bonding points of the yarn as a spunbonded non-woven fabric, the higher the strength and the better the flexibility.
  • the average single fiber fineness is 3.5 dtex or less from the viewpoint of the strength of the spunbonded nonwoven fabric.
  • the average single fiber fineness can be calculated from the fiber cross-sectional area A (m 2 ) and the polymer density ⁇ (g / m 3 ) in the cross-sectional photograph of the fiber using the following equation.
  • Single fiber fineness (dtex) A (m 2 ) ⁇ ⁇ (g / m 3 ) ⁇ 10000 (m).
  • the spunbond nonwoven fabric of the present invention preferably has a basis weight of 3 to 200 g / m 2 .
  • the basis weight is more preferably 5 to 150 g / m 2 , still more preferably 10 to 100 g / m 2 .
  • the weight per unit area is in the above range, particularly when used as a nonwoven fabric for sanitary materials, sufficient flexibility can be easily obtained.
  • the apparent density of the spunbonded nonwoven fabric of the present invention is preferably 0.130 g / cm 3 or less.
  • the apparent density can be calculated by dividing the basis weight by the thickness.
  • the apparent density is more preferably 0.125 g / cm 3 or less, still more preferably 0.100 g / cm 3 or less. When the apparent density is in the above range, sufficient bulkiness can be easily obtained particularly when used as a nonwoven fabric for sanitary materials.
  • a shape of a spinneret or an ejector various things, such as round shape and a rectangle, are employable.
  • a combination of a rectangular cap and a rectangular ejector is preferably used in view of the fact that the amount of compressed air used is relatively small and fusion and rubbing of fibers are unlikely to occur.
  • the method for producing a crimped fiber of the present invention is a method for producing the crimped fiber of the present invention, in which a polyolefin resin is discharged from a dumbbell-shaped nozzle having a difference in discharge hole area of two circles.
  • the two discharge hole areas of the dumbbell-shaped nozzle are preferably 1.2 or more, more preferably 1.5 or more, and still more preferably 2 in the value (area ratio) of the large pore area / small pore area. .0 or more.
  • the upper limit value of the area ratio is not particularly limited, but as the area ratio increases, the yarn bending immediately after discharge increases and spinning becomes unstable, so the area ratio is at most 5.0 or less.
  • the discharge hole (nozzle) of the spinneret for obtaining the cross-sectional shape of the crimped fiber of the present invention has the shape of the discharge hole illustrated in FIG. 3 (referred to as a dumbbell-shaped nozzle in the present invention). It is.
  • the discharge shape of the dumbbell-shaped nozzle is a shape in which a circle is disposed on both sides of a rectangle, and the hole diameter of the circle is different.
  • a discharge hole (large diameter side) 20 and a discharge hole (small diameter side) 30 are shown.
  • the spinning temperature at the time of melting and spinning is preferably 200 to 300 ° C., more preferably 210 to 280 ° C., and still more preferably 220 to 260 ° C.
  • the spinning temperature is preferably 200 to 300 ° C., more preferably 210 to 280 ° C., and still more preferably 220 to 260 ° C.
  • a method of cooling the fiber group of the spun long fiber for example, a method of forcibly blowing cold air onto the fiber group, a method of natural cooling at ambient temperature around the fiber group, a distance between the spinneret and the ejector Methods of adjustment, and combinations of these can be employed.
  • the cooling is preferably performed by applying cooling air from two directions opposite to the side surface of the fiber group, or by applying cooling air from three or more directions symmetrical to the side surface of the fiber group, or natural cooling.
  • the cooling air is applied to the side surface of the fiber group discharged from the dumbbell type nozzle from two opposite directions to cool the polyolefin resin. It is preferable to cool by applying cooling air from three or more symmetrical directions.
  • the “side surface” of the fiber group means a virtual surface that is parallel to the traveling direction of the fiber group discharged from the dumbbell-shaped nozzle and surrounds the fiber group along the outermost fibers of the fiber group.
  • cooling air from three or more symmetrical directions means from the n direction in which the angle between the directions of adjacent cooling airs is approximately 360 / n degrees in a virtual cross section perpendicular to the traveling direction of the fiber group It refers to applying cooling air.
  • a fiber group By applying cooling air to the side surface of the fiber group from two opposite directions or by applying cooling air from three or more symmetrical directions, the sway of the fiber group can be suppressed and stable spinnability can be obtained. Moreover, compared with the 2nd suitable aspect of the manufacturing method of the crimped fiber of the below-mentioned this invention, a fiber group can be cooled in a short time.
  • the method for producing a crimped fiber according to the present invention is a method for naturally cooling a fiber group in which a polyolefin resin is discharged from a dumbbell nozzle. Is preferred. By performing natural cooling, as in the case of the first preferred embodiment of the method for producing a crimped fiber of the present invention described above, it is possible to suppress the swing of the fiber group and obtain stable spinnability.
  • the cooling conditions can be appropriately adjusted and adopted in consideration of the discharge amount per single hole of the spinneret, the temperature for spinning, the ambient temperature, and the like.
  • the cooled and solidified fiber group is preferably pulled and drawn by compressed air jetted from an ejector. After being drawn, the drawn fiber is subject to stress relaxation because the restriction by compressed air is lost. At this time, due to the difference in shrinkage caused by the structural difference in the fiber cross section, the crimp tends to be developed in the fiber.
  • the method for producing a spunbonded nonwoven fabric according to the present invention is a method for producing the spunbonded nonwoven fabric according to the present invention, which comprises: crimped fibers obtained by the method for producing crimped fibers according to the present invention A sheet is formed by pressure bonding the fibers using a pair of rolls.
  • the non-woven fabric is manufactured by the spun bonding method as described above.
  • the spunbond method the raw resin is melted, and after spinning from the spinneret, the cooled and solidified fibers are pulled by an ejector and drawn to be collected on a moving net to form a non-woven web, and then heat is applied. It is a manufacturing method which requires the process to adhere
  • the long fibers (drawn fibers) after being drawn by the above process are collected on a net moving immediately below to form a non-woven web, and the obtained non-woven web is integrated by heat bonding to obtain a non-woven fabric. You can get it.
  • “collecting immediately below the spinning” indicates that collection is performed immediately after cooling and solidification when drawing is not performed, and collection is performed immediately after drawing when drawing is performed.
  • thermocompression bonding for example, a heat embossing roll in which engraving (concave and convex part) is given on the pair of roll surfaces, engraving on one roll surface having a flat (smooth) roll surface and the other roll (concave and convex part)
  • a heat embossing roll which consists of a combination with the roll to which T. was given
  • a heat calender roll which consists of a combination of a pair of flat (smooth) rolls, and fusion by ultrasonic waves can be applied.
  • heat bonding using an emboss roll can be preferably adopted from the viewpoint of strength and abrasion resistance. Moreover, it becomes difficult to apply a pressure to the whole by using the roll in which engraving (uneven
  • the embossed adhesion area ratio at the time of heat fusion is preferably 5 to 30%.
  • the embossed adhesion area ratio is preferably 5% or more, more preferably 10% or more, it is possible to obtain strength that can be practically used as a non-woven fabric.
  • the embossing adhesion area ratio is set to 30% or less, more preferably 20% or less, the bulkiness due to the crimped fibers can be maintained.
  • embss adhesion area ratio refers to the whole nonwoven fabric of a portion where the convex portion of one roll and the convex portion of the other roll overlap and abut on the nonwoven web when heat bonding is performed by a pair of uneven rolls.
  • the ratio of In the case of heat bonding between a roll having an unevenness and a flat roll, the ratio of the convex portion of the roll having an unevenness to the whole nonwoven fabric of the portion in contact with the nonwoven web is said.
  • shapes such as circular, oval, square, rectangular, parallelogram, rhombus, regular hexagon and regular octagon can be used.
  • the surface temperature of the heat embossing roll is preferably ⁇ 50 to ⁇ 1 ° C. with respect to the melting point of the resin used.
  • the surface temperature of the heat embossing roll is preferably ⁇ 50 to ⁇ 1 ° C. with respect to the melting point of the resin used.
  • the surface temperature of the heat embossing roll is set to ⁇ 1 ° C. or less with respect to the melting point of the resin, it is possible to easily prevent the occurrence of peeling between the resins due to melting of the fibers.
  • the linear pressure of the heat embossing roll during heat bonding is preferably 5 to 50 kgf / cm.
  • the linear pressure is 5 kgf / cm or more, more preferably 10 kgf / cm or more, and even more preferably 15 kgf / cm or more, sufficient thermal adhesion can be achieved.
  • the linear pressure is set to 50 kgf / cm or less, more preferably 40 kgf / cm or less, further preferably 30 kgf / cm or less, the bulkiness due to crimped fibers is maintained by not applying too much stress on the roll. Can.
  • the spunbonded nonwoven fabric using the crimped fiber of the present invention is very excellent in bulkiness, and can be suitably used for hygienic materials such as disposable diapers and napkins. Among hygienic materials applications, it can be suitably used particularly for surface materials.
  • Number of crimps of fiber The number of crimps was measured from an image of a fiber taken with a microscope (VHX-5000 manufactured by Keyence Corporation). The number of fiber peaks and valleys per unit length was counted, the sum was divided by 2 and the number per 25 mm was taken as the number of crimps. It measured about ten fibers and calculated the average.
  • Number of crimps is 50 pieces / 25 mm or more, degree of crimp (A), number of crimps is 25/25 mm or more and 50 pieces / less than 25 mm, degree of crimps (B), number of crimps is 0 piece / 25 mm (crimp Not crimped) to less than 25 pieces / 25 mm was taken as a crimp degree (C), and those with 25 pieces / 25 mm or more of crimps (A and B) were regarded as pass.
  • Non-woven fabric basis weight Based on 6.2 “mass per unit area” of JIS L1913 (2010), three 20 cm ⁇ 25 cm test pieces are collected per 1 m width of the sample, and each mass (g) in a standard state is measured, the average value was expressed as 1 m 2 per mass (g / m 2).
  • Non-woven thickness The thickness of the non-woven fabric was measured in accordance with JIS L 1908 (2010). A presser foot having an area of 2500 mm 2 was prepared. The thickness was measured after applying a pressure of 2 kPa for 5 seconds to a test piece having a size of at least 1.75 times the diameter of the presser foot. The average value for 10 test pieces was calculated, and the value was taken as the thickness. The higher the value, the better the bulkiness.
  • Apparent density of non-woven fabric The apparent density of the non-woven fabric was calculated from the above-described basis weight and thickness measured. It evaluated that it was excellent in bulkiness, so that this numerical value was low.
  • Example 1 Using polypropylene (PP) with a melt flow rate (MFR) of 60 g / 10 min (load: 2160 g, temperature: 230 ° C.) and a melting point of 162 ° C. as a raw material, it is melted by an extruder and the spinning temperature is 235 ° C. A long fiber was spun out at a single hole discharge amount of 0.6 g / min from a spinneret having a discharge shape with a hole diameter of ⁇ 0.38 mm and ⁇ 0.27 mm and a center distance between both holes of 0.8 mm.
  • MFR melt flow rate
  • Cooling is applied to the side of the spun long fiber group from two opposing directions to cool it, and then it is passed through the ejector, and the ejector ejects compressed air at an ejector pressure of 0.15 MPa to pull the fiber group, It was stretched to develop a crimp.
  • the fiber cross section of the crimped fiber obtained was the shape shown in (a) of FIG. 1 and (a) of FIG. Moreover, in the fiber cross section shown by (a) of FIG. 1 and (a) of FIG. 2, the interface 10 of the fiber cross section could be confirmed.
  • the crimped fibers were collected on a net moving immediately below to obtain a nonwoven web. Subsequently, a linear pressure of 20 kgf / cm and a thermal bonding temperature of 135 are obtained using a pair of embossed rolls consisting of a metal flat ball engraved upper roll and a metal flat lower roll with a bonding area of 10%. The heat bonding process was performed at ° C. to obtain a spunbonded nonwoven fabric having a basis weight of 20 g / m 2 . The presence or absence of the fiber cross section interface of the fibers constituting the obtained spunbonded nonwoven fabric, the number of crimps, the basis weight of the nonwoven fabric, the thickness, and the apparent density were measured. The results are shown in Table 1.
  • Example 2 A crimped fiber was obtained in the same manner as in Example 1 using polypropylene (PP) having a melting point of 162 ° C. and having an MFR of 35 g / 10 min (load: 2160 g, temperature: 230 ° C.) as a raw material.
  • the fiber cross section of the crimped fiber obtained was the shape shown in (b) of FIG. 1 and (b) of FIG. Moreover, the interface 10 of the fiber cross section shown by (b) of FIG. 1 and (b) of FIG. 2 has been confirmed.
  • a spunbonded nonwoven fabric was obtained in the same manner as in Example 1 using the resulting crimped fibers. The results are shown in Table 1.
  • Example 3 A crimped fiber was obtained in the same manner as in Example 2 using a copolymerized polypropylene (copolymerized PP) having a MFR of 33 g / 10 min (load: 2160 g, temperature: 230 ° C.) and a melting point of 149 ° C. as raw materials.
  • a spunbonded nonwoven fabric was obtained in the same manner as in Example 1 using the resulting crimped fibers. The results are shown in Table 1.
  • Example 4 It is carried out except that the thermal bonding temperature of the embossing roll was 90 ° C using high density polyethylene (HDPE) with a melting point of 130 ° C with MFR of 18g / 10min (load: 2160g, temperature: 190 ° C) as the raw material A spunbonded nonwoven fabric was obtained in the same manner as Example 1. The results are shown in Table 1.
  • HDPE high density polyethylene
  • Example 5 A spunbond nonwoven fabric in the same manner as Example 4, except that MFR of 30 g / 10 min (load: 2160 g, temperature: 190 ° C.) and linear low density polyethylene (LLDPE) having a melting point of 130 ° C. was used as the raw material. I got The results are shown in Table 2.
  • Example 6 A spunbond nonwoven fabric was obtained in the same manner as in Example 1 except that the spinneret used was a spinneret having a hole diameter of ⁇ 0.35 mm and ⁇ 0.32 mm and a discharge shape having a center distance of 0.8 mm between both holes. The results are shown in Table 2.
  • Example 7 The raw material is MFR 35 g / 10 min (load: 2160 g, temperature: 230 ° C.) and a copolymer of polypropylene (PP) having a melting point of 162 ° C. and MFR 25 g / 10 min (load: 2160 g, temperature: 230 ° C)
  • Crimped fibers were obtained in the same manner as in Example 2 using a mixed raw material in which polypropylene (PP) was used at a weight ratio of each raw material of 88:12. Using the resulting crimped fiber, a spunbonded nonwoven fabric was obtained in the same manner as in Example 1. The results are shown in Table 2.
  • Example 8 A spunbonded nonwoven fabric was obtained in the same manner as in Example 1, except that the cooling of the fiber group was naturally cooled. The results are shown in Table 2.
  • Example 1 A spunbonded non-woven fabric was obtained in the same manner as in Example 1 except that the discharge shape of the spinneret to be used was a round shape (discharge diameter: 0.5 mm), which is conventionally known. The obtained results are shown in Table 2.
  • Examples 1 to 8 are substantially composed of a single raw material, there is an interface in the fiber cross section, and the fibers are crimped and obtained.
  • the spunbonded non-woven fabric is very excellent in bulkiness and is very suitably used as a surface member of a sanitary material.
  • Comparative Example 1 is a normal round cross section, there is no interface in the fiber cross section, and no crimp appears in the fiber.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Le but de la présente invention est de fournir une fibre frisée et un non-tissé filé-lié qui sont peu coûteux et ont une voluminosité exceptionnelle, ainsi qu'un procédé de fabrication de fibre frisée et un procédé de fabrication de non tissé filé-lié dans lesquels il est possible de fabriquer la fibre frisée sur une échelle industrielle par un procédé qui excelle en termes de productivité et de sécurité. Afin d'atteindre cet objectif, cette fibre frisée a la composition suivante. Spécifiquement, la fibre frisée a comme composant principal une polyoléfine, est configurée sensiblement à partir d'une seule matière première et a une interface présente dans une section transversale perpendiculaire à la direction de la longueur de la fibre.
PCT/JP2018/025996 2017-07-28 2018-07-10 Fibre frisée, non-tissé filé-lié et procédé de fabrication associé WO2019021809A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020207001091A KR20200036848A (ko) 2017-07-28 2018-07-10 권축 섬유, 스펀본드 부직포 및 그들의 제조 방법
JP2018553270A JP7156033B2 (ja) 2017-07-28 2018-07-10 捲縮繊維、スパンボンド不織布、およびそれらの製造方法
CN201880044374.XA CN110832125A (zh) 2017-07-28 2018-07-10 卷曲纤维、纺粘无纺布、及它们的制造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017-146285 2017-07-28
JP2017146285 2017-07-28

Publications (1)

Publication Number Publication Date
WO2019021809A1 true WO2019021809A1 (fr) 2019-01-31

Family

ID=65041442

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2018/025996 WO2019021809A1 (fr) 2017-07-28 2018-07-10 Fibre frisée, non-tissé filé-lié et procédé de fabrication associé

Country Status (5)

Country Link
JP (1) JP7156033B2 (fr)
KR (1) KR20200036848A (fr)
CN (1) CN110832125A (fr)
TW (1) TW201910575A (fr)
WO (1) WO2019021809A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021065446A1 (fr) * 2019-09-30 2021-04-08 東レ株式会社 Tissu non-tissé étirable en couches, matériau hygénique, et procédé de production de tissu non-tissé étirable en couches
WO2021215492A1 (fr) * 2020-04-22 2021-10-28 花王株式会社 Tissu non tissé pour l'hygiène, produit hygiénique et article absorbant pourvu de celui-ci, et procédé de fabrication de tissu non tissé pour l'hygiène

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05209354A (ja) * 1991-10-03 1993-08-20 Oji Paper Co Ltd 長繊維不織布及びその製造方法
WO1997040216A1 (fr) * 1996-04-25 1997-10-30 Chisso Corporation Fibres de polyolefine et non-tisse fabrique a partir desdites fibres
JP2005179787A (ja) * 2003-12-16 2005-07-07 Mitsubishi Rayon Co Ltd ポリプロピレン捲縮加工糸及びその製造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS46849Y1 (fr) * 1968-04-27 1971-01-13
JPH06104928B2 (ja) * 1988-08-18 1994-12-21 鐘淵化学工業株式会社 毛髪用塩化ビニル系繊維およびその製造法
JP2854412B2 (ja) * 1990-11-21 1999-02-03 帝人株式会社 潜在捲縮糸の製造方法およびその紡糸口金
JPH05156562A (ja) * 1991-12-05 1993-06-22 Teijin Ltd 長繊維不織布
JP4205201B2 (ja) 1998-04-10 2009-01-07 旭化成せんい株式会社 電子レンジ用食品包装袋
JP4194008B2 (ja) 1999-06-11 2008-12-10 共同印刷株式会社 着色画像形成用感光液およびカラーフィルタ
KR20060123820A (ko) * 2005-05-30 2006-12-05 주식회사 에이치케이 입모성 및 광택이 우수한 벨벳직물용 이형단면폴리에스테르 섬유의 제조방법 및 그 제조방법으로 제조된 벨벳류 직물
JP5484564B2 (ja) 2010-04-16 2014-05-07 三井化学株式会社 捲縮複合繊維、及び当該繊維からなる不織布
CN203212680U (zh) * 2013-04-25 2013-09-25 苏州金辉纤维新材料有限公司 一种哑铃形纤维及喷丝板

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05209354A (ja) * 1991-10-03 1993-08-20 Oji Paper Co Ltd 長繊維不織布及びその製造方法
WO1997040216A1 (fr) * 1996-04-25 1997-10-30 Chisso Corporation Fibres de polyolefine et non-tisse fabrique a partir desdites fibres
JP2005179787A (ja) * 2003-12-16 2005-07-07 Mitsubishi Rayon Co Ltd ポリプロピレン捲縮加工糸及びその製造方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021065446A1 (fr) * 2019-09-30 2021-04-08 東レ株式会社 Tissu non-tissé étirable en couches, matériau hygénique, et procédé de production de tissu non-tissé étirable en couches
CN114450154A (zh) * 2019-09-30 2022-05-06 东丽株式会社 层叠伸缩无纺布、卫生材料及层叠伸缩无纺布的制造方法
WO2021215492A1 (fr) * 2020-04-22 2021-10-28 花王株式会社 Tissu non tissé pour l'hygiène, produit hygiénique et article absorbant pourvu de celui-ci, et procédé de fabrication de tissu non tissé pour l'hygiène
CN115427621A (zh) * 2020-04-22 2022-12-02 花王株式会社 卫生用无纺布及具备其的卫生用品及吸收性物品、以及卫生用无纺布的制造方法

Also Published As

Publication number Publication date
TW201910575A (zh) 2019-03-16
CN110832125A (zh) 2020-02-21
JPWO2019021809A1 (ja) 2020-06-11
JP7156033B2 (ja) 2022-10-19
KR20200036848A (ko) 2020-04-07

Similar Documents

Publication Publication Date Title
JP6633783B2 (ja) 伸張性不織布
JP5484564B2 (ja) 捲縮複合繊維、及び当該繊維からなる不織布
WO2010050407A1 (fr) Fibre composite crêpée et textile non-tissé comprenant la fibre
WO2012153802A1 (fr) Fibre composite frisée et tissu non tissé comprenant ladite fibre
JP6714982B2 (ja) 嵩高性複合長繊維不織布
JP2003528226A (ja) 多成分の孔開き不織物
JP6904260B2 (ja) スパンボンド不織布およびその製造方法
JP7247884B2 (ja) スパンボンド不織布
WO2019021809A1 (fr) Fibre frisée, non-tissé filé-lié et procédé de fabrication associé
JP7035360B2 (ja) スパンボンド不織布
CN113677516A (zh) 无纺布层叠体及卫生用品
JP5139669B2 (ja) 捲縮複合繊維およびその製造方法
JP6897326B2 (ja) 不織布
CN113348277B (zh) 纺粘无纺布、纺粘无纺布的制造方法、压纹辊
JP2019026956A (ja) 捲縮繊維、スパンボンド不織布、および捲縮繊維の製造方法
JP6798223B2 (ja) スパンボンド不織布
WO2021140906A1 (fr) Non-tissé filé-lié
JP2019007112A (ja) 伸縮性不織布およびその製造方法
JP2019094584A (ja) 不織布
JP7028695B2 (ja) 嵩高柔軟不織布
WO2022004505A1 (fr) Matériau de surface pour matériau sanitaire et son procédé de production
JP6763275B2 (ja) 分割型複合繊維およびそれを用いた不織布
TW202231954A (zh) 紡黏不織布及包括其而成的衛生材料
JP2018141246A (ja) 分割型複合繊維を用いた不織布
WO2021200371A1 (fr) Tissu non tissé filé-lié

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018553270

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18838683

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18838683

Country of ref document: EP

Kind code of ref document: A1