WO2017170241A1 - Dispositif de fabrication de non-tissé, procédé de fabrication de non-tissé, et non-tissé - Google Patents

Dispositif de fabrication de non-tissé, procédé de fabrication de non-tissé, et non-tissé Download PDF

Info

Publication number
WO2017170241A1
WO2017170241A1 PCT/JP2017/012062 JP2017012062W WO2017170241A1 WO 2017170241 A1 WO2017170241 A1 WO 2017170241A1 JP 2017012062 W JP2017012062 W JP 2017012062W WO 2017170241 A1 WO2017170241 A1 WO 2017170241A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
nozzle
ejected
nonwoven fabric
main nozzle
Prior art date
Application number
PCT/JP2017/012062
Other languages
English (en)
Japanese (ja)
Inventor
翔一 ▲高▼久
鈴木　健一
尚佑 國本
敦之 川田
喬之 田中
Original Assignee
三井化学株式会社
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 三井化学株式会社 filed Critical 三井化学株式会社
Priority to CN201780021229.5A priority Critical patent/CN108884618B/zh
Priority to KR1020187028246A priority patent/KR20180117183A/ko
Priority to EP17774778.9A priority patent/EP3438339B1/fr
Priority to US16/089,266 priority patent/US20190106821A1/en
Priority to DK17774778.9T priority patent/DK3438339T3/da
Priority to JP2018509251A priority patent/JPWO2017170241A1/ja
Priority to MYPI2018703555A priority patent/MY194230A/en
Publication of WO2017170241A1 publication Critical patent/WO2017170241A1/fr

Links

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
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging fibres
    • 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
    • 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
    • D01D7/00—Collecting the newly-spun products
    • 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
    • D01F8/00—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
    • D01F8/04—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers
    • D01F8/06—Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof from synthetic polymers with at least one polyolefin as constituent
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/021—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polyethylene
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
    • D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene

Definitions

  • the present invention relates to a nonwoven fabric manufacturing apparatus, a nonwoven fabric manufacturing method, and a nonwoven fabric.
  • Non-woven fabrics such as spunbonded non-woven fabrics are widely used for medical, hygiene materials, civil engineering materials and packaging materials.
  • Spunbond nonwoven fabric is collected and deposited while being diffused on the collection medium after the cooling treatment using the cooling air and the drawing treatment using the drawing air are performed on the filaments obtained by melt spinning the thermoplastic resin.
  • a horizontal cross section in a rectangular shape is formed into a rectangular shape, and a stepped depression is formed in a wall body at a discharge port connected to a cooling chamber and a cooling chamber which is gradually reduced in cross section in the filament running direction.
  • An apparatus for producing a spun fiber strip from an aerodynamically stretched synthetic resin filament having a stretch nozzle formed with a portion and a fiber placement device connected to the stretch nozzle is disclosed.
  • the fiber placement device of this document 1 has a rectangular cross section in the horizontal direction, and has a form of a jet pump having a venturi-shaped basin in the vertical direction and a diffuser outlet. The amount of air sucked from the free air suction port is adjusted by an intake pipe facing the diffuser outlet with the belt interposed therebetween.
  • Document 2 Japanese Patent No. 31354978 has a nozzle plate having a large number of nozzles, a processing shaft, a transport unit, and a transport conveyor. Processing air is introduced into the processing shaft and the transport unit, and the nozzle holes of the nozzle plate Endless fibers are fed from the end and are fed into the processing shaft by discharge movement toward the conveyor as endless fiber groups in the form of a mixture of air and fibers, and the transport unit follows the central inflow conduit for the endless fiber groups and this
  • An apparatus for manufacturing a web is disclosed.
  • an introduction conduit and / or a diffuser conduit is used for mixing air and fibers, and a flow slit for additionally introducing air into a conduit extending across the width of the conduit and across the direction of travel of the conveyor belt.
  • Aerodynamic equal distribution device in the form of an outflow slit for discharging air from the conduit and in addition to the flow of air to be additionally fed and the flow of air to be discharged during the mixing of air and fibers Is controlled or adjusted for the purpose of influencing the equal distribution of fibers.
  • the inner surface of the inflow conduit and / or the diffuser conduit includes an obstruction member in the vicinity of the surface in the longitudinal section of the conduit, and a spiral region is formed rearward with respect to the flow direction.
  • Document 3 Japanese Patent No. 5094588 is provided with a spinneret for forming a filament as an apparatus for producing a spunbond formed from a filament, and cooling for supplying processing air for cooling the filament downstream of the spinneret.
  • a drawing unit for drawing the filament is connected to the cooling chamber, the connection region between the cooling chamber and the drawing unit is closed, and the drawing unit has a passage wall on at least part of the length of the drawing passage.
  • additional air is injected into the drawing passage at the upstream end of the branch drawing passage portion so that the filament bundle is widely formed in the machine direction, and the filaments of the spunbond web
  • An apparatus is described which is provided with a deposition apparatus for depositing.
  • Reference 3 also describes that there is a sedimentation unit downstream of the stretching unit, the deposition unit consists of an upstream diffuser and an adjacent downstream diffuser, and an ambient air inlet slit is provided between the upstream diffuser and the downstream diffuser. .
  • the document 2 aims to obtain a nonwoven fabric with a uniform mesh size, but a nonwoven fabric with high uniformity may have insufficient filament entanglement and lower strength.
  • the present invention has been made in view of the above-described facts, and an object of the present invention is to provide a nonwoven fabric manufacturing apparatus, a nonwoven fabric manufacturing method, and a nonwoven fabric that can improve uniformity while suppressing a decrease in strength of the nonwoven fabric.
  • a collection unit that collects a filament ejected toward a collection medium on the collection medium, and air that is supplied together with the filament that is collected on the collection medium.
  • a main nozzle that is ejected toward the collection medium, and the filament is diffused by an airflow that flows while diffusing air that is ejected from the main nozzle together with the filament.
  • a non-woven fabric manufacturing apparatus comprising: a diffusing portion including a diffusing space; and an airflow generating means for generating an airflow in close proximity to the airflow around the airflow of air injected from the main nozzle into the diffusing space.
  • the air ejected from the main nozzle together with the filament is diffused between the main nozzle from which air is ejected together with the filament and the collection medium that collects the filament ejected from the main nozzle.
  • a method for producing a nonwoven fabric comprising: ejecting the filament together with air from the main nozzle toward the collection medium, and collecting and depositing the filament diffused in the diffusion space on the collection medium.
  • a filament is spun from a molten resin or the like, a spinning section (spinning process) for leading out a plurality of filaments, and a plurality of filaments introduced from the spinning section are cooled with air.
  • a cooling section for cooling by the above
  • a stretching section for stretching the cooled filaments by stretching air
  • a collecting section collecting and depositing the plurality of stretched filaments to generate a web
  • a non-woven fabric is produced from the collected web.
  • the manufacturing apparatus also includes a diffusion unit (diffusion process) that ejects the plurality of filaments introduced from the stretching unit toward the collection unit while diffusing the plurality of filaments.
  • the diffusion unit includes a main nozzle and a diffusion space provided between the main nozzle and the collection medium of the collection unit.
  • the diffusion space in the first and second aspects is preferably a space that can naturally diffuse without hindering the diffusion of the airflow from the air ejected from the main nozzle.
  • the diffusion space may be surrounded by the partition wall, but when surrounded by the partition wall, the partition wall may be provided away from the air flow so as not to affect the air flow caused by the air ejected from the main nozzle.
  • a plurality of filaments are arranged along the machine width direction, and the main nozzle has a long slit shape along the machine width direction.
  • the air ejected from the main nozzle becomes an air flow (jet) flowing to the collection medium while gradually expanding along the machine direction in the diffusion space.
  • the plurality of filaments ejected from the main nozzle together with air are collected in the collection medium by the filaments being diffused in the machine direction by the airflow formed in the diffusion space.
  • the diffusing section is provided with an airflow generating means, and an airflow is generated in the vicinity of the airflow around the airflow generated by the air blown from the main nozzle by the airflow generating means, and close to the airflow of the main nozzle.
  • the air flowing in the diffusion space suppresses the air (air) in the diffusion space from entering the air flow caused by the air ejected from the main nozzle together with the plurality of filaments.
  • the air flow jetted from the main nozzle has a flow velocity fluctuation inside, but an area in which the flow velocity fluctuation is larger than the surroundings is caused by the entry of air in the diffusion space.
  • the air in the diffusion space enters the airflow generated by the air ejected from the main nozzle by generating an airflow that is close to the airflow around the airflow generated by the air ejected from the main nozzle.
  • the region where the flow velocity fluctuation is larger than the surrounding area is narrowed, or the flow velocity fluctuation magnitude in the region where the flow velocity fluctuation is larger than the surrounding area is suppressed.
  • Each filament has a region where the flow velocity fluctuation is larger than the surrounding area, and the larger the flow velocity fluctuation in the region, the more the filaments are entangled and the bundle of filaments is generated, resulting in a decrease in uniformity.
  • the airflow generation means includes a sub nozzle that ejects air into the diffusion space.
  • the airflow generation means includes a sub nozzle that has an opening arranged alongside the opening of the main nozzle and ejects air to the diffusion space.
  • a sub nozzle in which an opening is arranged side by side with the opening of the main nozzle, and the air ejected from the sub nozzle causes the air around the air flow by the air ejected from the main nozzle. Creates an airflow along the airflow.
  • the sub nozzle is provided on the machine direction side of the main nozzle and on the opposite side to the machine direction.
  • the sub nozzle is provided on each of the machine direction side and the machine direction side with respect to the main nozzle.
  • the sixth aspect may be any one of the third to fifth aspects, wherein the flow velocity of the air ejected from the sub nozzle may be equal to or lower than the flow velocity of the air ejected from the main nozzle.
  • the seventh aspect is more preferably the sixth aspect, wherein the flow velocity of the air ejected from the sub nozzle is 1/10 or more of the flow velocity of the air ejected from the main nozzle.
  • Each of the first to seventh aspects is a nonwoven fabric that is improved in uniformity while suppressing a decrease in strength, and is stretched 5% in the machine direction relative to the strength when stretched 5% in the direction perpendicular to the machine direction. It is suitable for obtaining a nonwoven fabric having a strength ratio of 2.0 or less.
  • Each of the first to seventh aspects is suitable for producing a nonwoven fabric having a maximum strength when stretched in the machine direction of 35.0 (N / 25 mm) or more. Further, in each of the first to seventh aspects, the maximum strength when stretched in the machine direction of the produced nonwoven fabric is more preferably 37.5 (N / 25 mm) or more, and further preferably 40. 0.0 (N / 25 mm), most preferably 42.5 (N / 25 mm). Furthermore, each of the first to seventh aspects is suitable for producing a nonwoven fabric having a basis weight variation (%) of preferably 3.0% or less, more preferably 2.5% or less.
  • FIG. 1 the principal part of the manufacturing apparatus 10 of the nonwoven fabric which concerns on this Embodiment is shown.
  • the manufacturing apparatus 10 according to the present embodiment is used for manufacturing a spunbonded nonwoven fabric.
  • an MD (machine direction) direction indicates a machine direction (machine flow direction)
  • an UP direction indicates an upper direction.
  • a direction (direction perpendicular to the machine direction) orthogonal to each of the MD direction and the UP direction is expressed as a CD (cross machine direction) direction (machine width direction, not shown).
  • the manufacturing apparatus 10 includes a spinning unit 12 that generates a filament by spinning a molten resin in which a thermoplastic resin used for a spunbond nonwoven fabric is melted, a cooling unit 14 that performs a cooling process on the spun filament, and a filament. And a stretching section 16 for performing a stretching process. Moreover, the manufacturing apparatus 10 collects the filaments that have been subjected to the cooling treatment and the stretching treatment, and ejects the plurality of filaments toward the collection unit 18 that obtains a web to be a nonwoven fabric and the collection unit 18. A diffusion unit 20 is provided.
  • the spinning unit 12 includes a spinneret 22 in which a plurality of spinning nozzles are arranged, and a molten resin introduction tube 24 is connected to the spinneret 22.
  • the spinning unit 12 generates a filament by spinning the molten resin introduced into the spinneret 22 through the molten resin introduction tube 24 using a spinning nozzle. Further, the spinning unit 12 derives a plurality of filaments arranged in the CD direction by the spinneret 22 having a plurality of spinning nozzles.
  • the cooling unit 14 includes a cooling chamber 26 into which a plurality of spun filaments are introduced, and a cooling air supply duct 28 is connected to the cooling chamber 26. The cooling unit 14 uses the air supplied from the cooling air supply duct 28 as cooling air, and cools the plurality of filaments introduced into the cooling chamber 26 with the cooling air.
  • the extending section 16 includes an extending shaft 30 that has an opening cross section that is long in the CD direction (in FIG. 1, the front and back directions in the drawing) and short in the MD direction and extends in the vertical direction.
  • the stretching shaft 30 is connected to the cooling chamber 26, and a plurality of filaments are introduced from the cooling chamber 26 into the stretching shaft 30.
  • the drawing unit 16 uses cooling air introduced together with a plurality of filaments or air supplied into the drawing shaft 30 separately from the cooling air as drawing air, and draws the filament introduced from the cooling unit 14 by drawing air. To do.
  • the collecting unit 18 includes a moving band 32 as a collecting medium formed by mesh or punching metal, and suction means (not shown) provided below the moving band 32.
  • the diffusing unit 20 ejects the drawing air introduced from the drawing shaft 30 or air introduced separately from the drawing wind toward the moving zone 32 of the collection unit 18.
  • the collection unit 18 collects the plurality of ejected filaments on the collection surface 32A of the moving band 32 while sucking them by a suction unit, and generates a web that becomes a nonwoven fabric.
  • the spinning unit 12, the cooling unit 14, the stretching unit 16, and the collecting unit 18 of the manufacturing apparatus 10 generate a plurality of filaments by spinning the molten resin, a cooling stretching process for the generated plurality of filaments, and A known configuration for collecting a plurality of filaments can be applied.
  • FIG. 2 shows a schematic configuration of the diffusion unit 20 according to the present embodiment.
  • the diffusion unit 20 includes a jet nozzle 34 as a main nozzle.
  • an opening 34A at the tip as an opening serving as an ejection outlet is formed in a slit shape that is long in the CD direction, and is directed onto the moving band 32 of the collection unit 18. Further, the ejection nozzle 34 is continued to the stretching shaft 30 of the stretching section 16 and a plurality of filaments that have been subjected to cooling and stretching processing are introduced.
  • air is introduced into the ejection nozzle 34 separately from the air by the stretched air or the air of the stretched wind.
  • the diffusion unit 20 ejects air and a plurality of filaments introduced into the ejection nozzle 34 toward the moving band 32 of the collection unit 18 from the opening 34A.
  • the diffusing unit 20 sends a plurality of filaments ejected from the ejection nozzle 34 toward the collection unit 18 by the air current ejected from the ejection nozzle 34.
  • the air flow generated by the air ejected from the ejection nozzle 34 together with the plurality of filaments is referred to as a transport flow.
  • the diffusion unit 20 is provided with a diffusion space 36 between the ejection nozzle 34 and the collection surface 32 ⁇ / b> A of the moving band 32 of the collecting unit 18, and the carrier flow is directed toward the moving band 32 in the diffusion space 36.
  • the diffusion space 36 is a space that is not provided with a wall surface or the like that restricts the flow of the carrier flow by the air ejected from the ejection nozzle 34. That is, the diffusion space 36 is a space in which the carrier flow ejected from the ejection nozzle 34 is not affected by a structure such as a wall surface other than the collection unit 18.
  • the diffusion space may be partitioned by the partition wall as long as the partition wall is provided so as not to interfere with the airflow.
  • the carrier flow by the air ejected from the ejection nozzle 34 flows in the diffusion space 36 while gradually (naturally) expanding in the MD direction and the direction opposite to the MD direction. Further, the flow velocity of the transport flow gradually decreases as it approaches the moving zone 32.
  • the plurality of filaments ejected from the ejection nozzle 34 are diffused in the MD direction and in the direction opposite to the MD direction by the conveyance flow expanding in the diffusion space 36.
  • the filament is diffused and collected in a predetermined collection region on the collection surface 32 ⁇ / b> A of the moving band 32.
  • the manufacturing apparatus 10 generates the nonwoven fabric to be produced, the production speed of the nonwoven fabric, the width in the CD direction of the web produced by collecting the filaments in the collection unit 18, the opening width of the ejection nozzle 34, the opening length, The moving speed of the moving band 32 and the interval between the ejection nozzle 34 and the collecting surface 32A of the moving band 32 are determined.
  • the interval (height H) between the tip of the ejection nozzle 34 and the surface of the moving band 32 of the collecting unit 18 is set between 0.1 m and 1 m, and the interval H Is the height of the diffusion space 36.
  • the flow velocity of the air ejected from the ejection nozzle 34 or the air volume per unit time of the ejected air is determined, and in the following, the air flow velocity at the opening of the ejection nozzle 34 is the flow velocity Vm of the carrier flow. Is written.
  • the spread of the carrier flow in the diffusion space 36 changes according to the flow velocity Vm. When the flow velocity Vm is high, the spread of the carrier flow is smaller than when it is low.
  • the diffusion unit 20 is provided with the diffusion space 36 so that the carrier flow ejected from the ejection nozzle 34 reaches the moving band 32 while gradually spreading mainly along the MD direction.
  • the area of the conveyance flow in the diffusion space 36 is referred to as a conveyance flow area 38.
  • the conveyance basin 38 is shown virtually.
  • the diffusing section 20 is provided with a sub nozzle 40 as an airflow generating means.
  • the sub-nozzle 40 is provided with a slit-like opening 40A that is long in the CD direction as an opening.
  • the sub nozzle 40 is disposed on each of the ejection nozzle 34 on the MD direction side and the opposite side to the MD direction, and the opening 40 ⁇ / b> A of the sub nozzle 40 is aligned with the opening 34 ⁇ / b> A of the ejection nozzle 34.
  • the air supply pipe 42 is connected to the sub nozzle 40, and the air supplied through the air supply pipe 42 is ejected from the opening 40A.
  • the diffusing unit 20 is connected to the sub nozzle 40 via the air supply pipe 42 so that the air flow from the sub nozzle 40 becomes a flow velocity Vs determined according to the flow velocity Vm of the carrier flow ejected from the ejection nozzle 34.
  • the air supplied to is controlled.
  • the sub nozzle 40 is provided so that the air ejection direction is substantially parallel to the air ejection direction from the ejection nozzle 34.
  • the flow velocity Vs is preferably equal to or less than the flow velocity Vm (Vs ⁇ Vm), and more preferably equal to or greater than 1/10 of the flow velocity Vm (Vs ⁇ (Vm / 10)).
  • the opening 34A of the ejection nozzle 34 and the opening 40A of the sub nozzle 40 are arranged side by side.
  • the present invention is not limited to this, and one of the opening 34A of the ejection nozzle 34 and the opening 40A of the sub nozzle 40 is arranged. May be arranged with a step so as to be farther from the collection surface 32A of the moving band 32 than the other.
  • an air stream that is close to the transport flow is generated around the transport flow (transport flow area 38) in the diffusion space 36 by the air ejected from the sub nozzle 40.
  • the airflow generated by the air ejected from the sub nozzle 40 is virtually shown as an airflow layer 44.
  • a plurality of filaments spun from a molten resin and subjected to cooling processing and stretching processing are introduced into the ejection nozzle 34 of the diffusion unit 20.
  • the ejection nozzle 34 is introduced with air for generating a transport flow (stretching air or air supplied separately from the stretching air).
  • a diffusion space 36 is provided between the ejection nozzle 34 and the moving band 32 of the collection unit 18, and air and a plurality of filaments introduced into the ejection nozzle 34 are opened in the ejection nozzle 34. It is ejected from 34A toward the diffusion space 36. As a result, the plurality of filaments are sprayed onto the moving surface 32 of the collection unit 18 and collected on the collection surface 32 ⁇ / b> A while being diffused by the carrier flow by the air ejected from the ejection nozzle 34.
  • the diffusing section 20 is provided with a sub nozzle 40 together with the ejection nozzle 34, and the sub nozzle 40 ejects air supplied via the air supply pipe 42 to the diffusion space 36.
  • the diffusion space 36 an airflow is generated around the conveyance flow and close to the conveyance flow, and the air in the diffusion space 36 is suppressed from entering the conveyance flow (in the conveyance flow area 38).
  • the plurality of filaments transported in the diffusion space 36 by the transport flow cause fluctuations in the flow velocity inside the transport flow, but in regions where the flow velocity fluctuation is larger than the surroundings, the larger the flow velocity fluctuation, the greater the entanglement of the filament. Become.
  • the nonwoven fabric obtained from the web produced by collecting the filaments has high tensile strength.
  • the uniformity of the nonwoven fabric decreases.
  • the diffusing unit 20 provided with the sub nozzle 40, an air flow that is close to the transport flow is formed around the transport flow by the air ejected from the sub nozzle 40, and is generated inside the transport flow.
  • the magnitude of the flow velocity fluctuation is suppressed.
  • FIG. 3A corresponds to the diffusing section 20 of the present embodiment (below, Example 1) provided with the ejection nozzle 34 and the sub nozzle 40
  • FIG. 3B is a sub nozzle that is proportional (below, Comparative Example 1).
  • a diffusing portion 20A in which only the ejection nozzle 34 is provided without providing 40 is shown.
  • the flow rate fluctuation is obtained by calculating the speed difference of the flow rate for each sampling time from the flow rate for each sampling time set in advance, and using the root mean square (RMS) of the obtained speed difference.
  • RMS root mean square
  • the magnitude of the flow velocity fluctuation is suppressed in a region where the flow velocity fluctuation inside the air flow ejected from the ejection nozzle 34 is larger than that of the diffusing section 20A. Yes.
  • the diffusion part 20 the tangle of the filament in the web collected by the collection part 18 is suppressed from the diffusion part 20A.
  • the manufacturing apparatus 10 provided with the sub nozzle 40 of the diffusion unit 20 can obtain a non-woven fabric with improved uniformity as compared with the case where the sub nozzle 40 is not provided. Moreover, in the spreading
  • the flow velocity Vs of the sub nozzle 40 is halved with respect to the flow velocity Vm of the ejection nozzle 34.
  • the flow velocity Vs of the sub-nozzle 40 only needs to be equal to or less than the flow velocity Vm of the ejection nozzle 34, thereby suppressing the flow velocity fluctuation in the conveyance flow without suppressing the spread of the conveyance flow in the diffusion space 36. it can.
  • the flow velocity Vs of the sub nozzle 40 may be larger than the flow velocity Vm of the ejection nozzle 34 (Vs> Vm).
  • Vs> Vm the flow velocity Vs of the sub nozzle 40
  • the direction along the carrier flow that is, the direction of flowing in contact with the carrier flow may be used.
  • the sub nozzle 40 is provided on the MD direction side and the direction opposite to the MD direction with respect to the ejection nozzle 34, but the sub nozzle 40 places the sub nozzle 40 on the MD side relative to the ejection nozzle 34.
  • the sub nozzle 40 only needs to be provided with the sub nozzle 40 on at least one of the MD direction side and the direction opposite to the MD direction with respect to the ejection nozzle 34.
  • the sub nozzle 40 is provided as the air flow generation means.
  • the air flow generation means is not limited to the sub nozzle 40, and generates an air flow that is close to the transport flow around the transport flow. Anything is fine.
  • Example 1 The physical properties in the present embodiment (hereinafter referred to as Example 1) and the proportionality to the present embodiment (hereinafter referred to as Comparative Example 1) were measured by the following methods.
  • Example 1 As the first propylene polymer, a propylene homopolymer having a melting point of 162 ° C and MFR (measured at a temperature of 230 ° C and a load of 2.16 kg in accordance with ASTM D1238, the same applies hereinafter) 60 g / 10 min was used.
  • As the second propylene polymer a propylene / ethylene random copolymer having a melting point of 142 ° C., an MFR of 60 g / 10 min, and an ethylene unit component content of 4.0 mol% was used.
  • the obtained fiber was dispersed from the main nozzle (ejection nozzle 34) shown in FIG. 1 and then volume on the collection medium (moving zone 32).
  • the speed of the air ejected from the ejection nozzle 34 (main nozzle) is 107.3 m / sec, and the auxiliary speed provided at a position 38 mm away from the ejection outlet (opening 34A) of the ejection nozzle 34 in the horizontal direction.
  • the air ejected from the nozzle 40 (ejection width 12 mm) was set to 1/4 (26.8 m / sec) with respect to the speed of the air ejected from the ejection nozzle 34.
  • the embossed pattern is peeled from the collection medium, the embossed pattern has an area ratio of 6.7%, the embossed area is 0.19 m 2 , and is thermally bonded by heating embossing under conditions of a heating temperature of 130 ° C. and a linear pressure of 60 kg / cm, A spunbond nonwoven fabric was obtained.
  • the basis weight of the obtained spunbonded nonwoven fabric was 20.0 g / m 2 .
  • the obtained spunbonded nonwoven fabric was evaluated by the method described above. The evaluation results are shown in FIG.
  • Example 1 A spunbonded nonwoven fabric was obtained in the same manner as in Example 1 except that the air ejected from the sub nozzle 40 was changed to 0 (speed 0 m / sec). Basis weight of the resulting spunbonded nonwoven fabric was 20.2 g / m 2. The obtained spunbonded nonwoven fabric was evaluated by the method described above. The evaluation results are shown in FIG.
  • Example 1 the variation in basis weight was 3.5 [%] in Comparative Example 1, while 2.0 [%] in Example 1.
  • the evaluation of the yarn bundle [point] in the non-woven fabric was Evaluation B for Comparative Example 1 while Example 1 was Evaluation B.
  • the MD5% strength is 4.3 [N / 25 mm] in Example 1 and 5.2 [N / 25 mm] in Comparative Example 1
  • the CD5% strength is 2.7 [N] in Example 1.
  • / 25 mm] and Comparative Example 1 were 1.2 [N / 25 mm].
  • the MD5% strength / CD5% strength was 1.6 in Example 1 and 4.3 in Comparative Example 1. From this, it can be seen that compared to Comparative Example 1, Example 1 has reduced strength reduction and improved uniformity.
  • the nonwoven fabric manufacturing apparatus and manufacturing method according to the present embodiment are suitable for manufacturing a nonwoven fabric in which strength reduction is suppressed and uniformity is improved.
  • the nonwoven fabric manufacturing apparatus and method according to the present embodiment is stretched 5% in the machine direction (MD direction) relative to the strength (CD 5% strength) when stretched 5% in the direction perpendicular to the machine direction (CD direction). It is suitable for the manufacture of a nonwoven fabric having a ratio of strength (MD5% strength) (MD5% strength / CD5% strength) of 2.0 or less.
  • the nonwoven fabric manufacturing apparatus and manufacturing method in the present embodiment is suitable for manufacturing a nonwoven fabric having a basis weight variation of preferably 3.0 [%] or less, more preferably 2.5 [%] or less.
  • the maximum strength (MD strength) when stretched in the machine direction is more preferably 37.5 [N / 25 mm] or more, and further preferably 40.0 [N / 25 mm], most preferably 42.5 [N / 25 mm].

Abstract

Dans une partie de dispersion d'un dispositif de fabrication de non-tissé, un espace de dispersion est prévu entre une buse de pulvérisation et une courroie mobile d'un collecteur, les ouvertures de buses auxiliaires sont positionnées près de l'ouverture de la buse de pulvérisation, et les buses auxiliaires pulvérisent de l'air depuis l'ouverture. La buse de pulvérisation pulvérise, conjointement avec l'air, une pluralité de filaments vers la courroie mobile. L'air pulvérisé depuis la buse de pulvérisation forme un flux de transport circulant de façon à s'étaler progressivement dans l'espace de dispersion, et la pluralité de filaments sont transportés vers la courroie mobile tout en étant amenés à se disperser par le flux de transport et collectés. L'air pulvérisé depuis les buses auxiliaires circule autour du flux de transport et le long du flux d'air, et empêche l'air dans l'espace de dispersion d'entrer dans le flux de transport.
PCT/JP2017/012062 2016-03-30 2017-03-24 Dispositif de fabrication de non-tissé, procédé de fabrication de non-tissé, et non-tissé WO2017170241A1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
CN201780021229.5A CN108884618B (zh) 2016-03-30 2017-03-24 非织造布的制造装置、非织造布的制造方法及非织造布
KR1020187028246A KR20180117183A (ko) 2016-03-30 2017-03-24 부직포의 제조 장치, 부직포의 제조 방법 및 부직포
EP17774778.9A EP3438339B1 (fr) 2016-03-30 2017-03-24 Dispositif de fabrication de non-tissé, procédé de fabrication de non-tissé, et non-tissé
US16/089,266 US20190106821A1 (en) 2016-03-30 2017-03-24 Apparatus for manufacturing non-woven fabric, method of manufacturing non-woven fabric, and non-woven fabric
DK17774778.9T DK3438339T3 (da) 2016-03-30 2017-03-24 Indretning til fremstilling af ikkevævet stof, fremgangsmåde til fremstilling af ikkevævet stof og ikkevævet stof
JP2018509251A JPWO2017170241A1 (ja) 2016-03-30 2017-03-24 不織布の製造装置、不織布の製造方法及び不織布
MYPI2018703555A MY194230A (en) 2016-03-30 2017-03-24 Apparatus for manufacturing non-woven fabric and method of manufacturing non-woven fabric

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016068804 2016-03-30
JP2016-068804 2016-03-30

Publications (1)

Publication Number Publication Date
WO2017170241A1 true WO2017170241A1 (fr) 2017-10-05

Family

ID=59965631

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2017/012062 WO2017170241A1 (fr) 2016-03-30 2017-03-24 Dispositif de fabrication de non-tissé, procédé de fabrication de non-tissé, et non-tissé

Country Status (8)

Country Link
US (1) US20190106821A1 (fr)
EP (1) EP3438339B1 (fr)
JP (3) JPWO2017170241A1 (fr)
KR (1) KR20180117183A (fr)
CN (1) CN108884618B (fr)
DK (1) DK3438339T3 (fr)
MY (1) MY194230A (fr)
WO (1) WO2017170241A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111254587A (zh) * 2020-04-21 2020-06-09 大连天马可溶制品有限公司 三角箱式铺网装置
CN114075718A (zh) * 2021-11-15 2022-02-22 大连瑞源非织造布有限公司 一种吸水复合非织造布及其制造方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000336517A (ja) * 1999-05-27 2000-12-05 Suetomi Engineering:Kk メルトブロー式不織布の紡糸ダイ
JP2001008713A (ja) * 1999-04-26 2001-01-16 Unitika Ltd 面ファスナ雌材用不織布およびその製造方法
JP2006083511A (ja) * 2004-09-17 2006-03-30 Reifenhaeuser Gmbh & Co Kg Maschinenfabrik 熱可塑性の合成物質からフィラメントを製造するための装置
JP2011241510A (ja) * 2010-05-19 2011-12-01 Toyota Boshoku Corp 溶融紡糸方法及び溶融紡糸装置
JP2013087412A (ja) * 2011-10-22 2013-05-13 Oerlikon Textile Gmbh & Co Kg 合成フィラメントを案内及び載置してフリースを形成する装置並びに方法
JP2015183308A (ja) * 2014-03-24 2015-10-22 日本バイリーン株式会社 極細繊維不織布および不織布の製造装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60155764A (ja) * 1984-01-25 1985-08-15 旭化成株式会社 不織布の製造方法
DE4332345C2 (de) * 1993-09-23 1995-09-14 Reifenhaeuser Masch Verfahren und Vliesblasanlage zur Herstellung von einem Spinnvlies mit hoher Filamentgeschwindigkeit
DE19504953C2 (de) * 1995-02-15 1999-05-20 Reifenhaeuser Masch Anlage für die Herstellung einer Spinnvliesbahn aus thermoplastischen Endlosfäden
JPH08246319A (ja) * 1995-03-07 1996-09-24 New Oji Paper Co Ltd スパンボンド不織布の製造装置
JP3108012B2 (ja) * 1996-06-07 2000-11-13 帝人株式会社 長繊維ウェブの製造方法
FR2792656B1 (fr) * 1999-04-23 2001-06-01 Icbt Perfojet Sa Dispositif permettant d'assurer l'ouverture et la repartition d'un faisceau de filaments lors de la realisation d'une nappe textile non tissee
JP3322868B1 (ja) * 2001-08-09 2002-09-09 宇部日東化成株式会社 不織布用繊維と不織布及びこれらの製造方法
US7807591B2 (en) * 2006-07-31 2010-10-05 3M Innovative Properties Company Fibrous web comprising microfibers dispersed among bonded meltspun fibers
ES2868124T3 (es) * 2007-07-31 2021-10-21 Toray Industries Soporte para la membrana de separación y método para la producción del mismo
US9856591B2 (en) * 2010-03-30 2018-01-02 Mitsui Chemicals, Inc. Nonwoven fabric
EP2559793B1 (fr) * 2010-04-16 2017-09-06 Mitsui Chemicals, Inc. Fibre frisée composite et tissu nontissé l'incluant

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001008713A (ja) * 1999-04-26 2001-01-16 Unitika Ltd 面ファスナ雌材用不織布およびその製造方法
JP2000336517A (ja) * 1999-05-27 2000-12-05 Suetomi Engineering:Kk メルトブロー式不織布の紡糸ダイ
JP2006083511A (ja) * 2004-09-17 2006-03-30 Reifenhaeuser Gmbh & Co Kg Maschinenfabrik 熱可塑性の合成物質からフィラメントを製造するための装置
JP2011241510A (ja) * 2010-05-19 2011-12-01 Toyota Boshoku Corp 溶融紡糸方法及び溶融紡糸装置
JP2013087412A (ja) * 2011-10-22 2013-05-13 Oerlikon Textile Gmbh & Co Kg 合成フィラメントを案内及び載置してフリースを形成する装置並びに方法
JP2015183308A (ja) * 2014-03-24 2015-10-22 日本バイリーン株式会社 極細繊維不織布および不織布の製造装置

Also Published As

Publication number Publication date
JP2020073749A (ja) 2020-05-14
DK3438339T3 (da) 2021-04-26
US20190106821A1 (en) 2019-04-11
CN108884618A (zh) 2018-11-23
EP3438339B1 (fr) 2021-03-24
MY194230A (en) 2022-11-23
EP3438339A4 (fr) 2019-08-21
EP3438339A1 (fr) 2019-02-06
KR20180117183A (ko) 2018-10-26
CN108884618B (zh) 2021-10-26
JP2022010113A (ja) 2022-01-14
JPWO2017170241A1 (ja) 2018-10-04

Similar Documents

Publication Publication Date Title
JP7219245B2 (ja) 不織ウェブ
US8246898B2 (en) Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit
US9303334B2 (en) Apparatus for forming a non-woven web
JP3725866B2 (ja) スパンボンド不織布製造プロセスおよびその製造システム
JP4488980B2 (ja) 熱可塑性合成樹脂製のフィラメントから成る不織布ウエブを連続製造する装置
US9309612B2 (en) Process for forming a non-woven web
JP2022010113A (ja) スパンボンド不織布
US20150322602A1 (en) Non-woven web
JP6842577B2 (ja) 不織布の製造装置及び不織布の製造方法
JP4334342B2 (ja) フィラメント延伸ジェット装置および方法
JP2002371428A (ja) 糸条延伸装置
EP3655577A1 (fr) Bande de non-tissé filée-soufflée
KR20240035437A (ko) 부직포의 제조 장치 및 제조 방법

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2018509251

Country of ref document: JP

Kind code of ref document: A

ENP Entry into the national phase

Ref document number: 20187028246

Country of ref document: KR

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2017774778

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 2017774778

Country of ref document: EP

Effective date: 20181030

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

Ref document number: 17774778

Country of ref document: EP

Kind code of ref document: A1