EP3382081A1 - Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus - Google Patents

Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus Download PDF

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Publication number
EP3382081A1
EP3382081A1 EP17164375.2A EP17164375A EP3382081A1 EP 3382081 A1 EP3382081 A1 EP 3382081A1 EP 17164375 A EP17164375 A EP 17164375A EP 3382081 A1 EP3382081 A1 EP 3382081A1
Authority
EP
European Patent Office
Prior art keywords
diffuser
secondary air
suction
filaments
width
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
Application number
EP17164375.2A
Other languages
German (de)
English (en)
Other versions
EP3382081B1 (fr
Inventor
Detlef Frey
Martin Neuenhofer
Sebastian Sommer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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 Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to ES17164375T priority Critical patent/ES2751161T3/es
Priority to EP17164375.2A priority patent/EP3382081B1/fr
Priority to PL17164375T priority patent/PL3382081T3/pl
Priority to DK17164375T priority patent/DK3382081T3/da
Priority to JOJO/P/2018/0032A priority patent/JOP20180032B1/ar
Priority to SI201730134T priority patent/SI3382081T1/sl
Priority to CA2997488A priority patent/CA2997488C/fr
Priority to ZA2018/01818A priority patent/ZA201801818B/en
Priority to MX2018003621A priority patent/MX378846B/es
Priority to CONC2018/0003214A priority patent/CO2018003214A1/es
Priority to MYPI2018701192A priority patent/MY191354A/en
Priority to KR1020180035044A priority patent/KR102213092B1/ko
Priority to ARP180100736A priority patent/AR111445A1/es
Priority to RU2018111083A priority patent/RU2704908C2/ru
Priority to SA118390477A priority patent/SA118390477B1/ar
Priority to US15/939,753 priority patent/US20180282926A1/en
Priority to JP2018063809A priority patent/JP6851341B2/ja
Priority to BR102018006571-8A priority patent/BR102018006571B1/pt
Priority to CN201810295003.0A priority patent/CN108691097B/zh
Publication of EP3382081A1 publication Critical patent/EP3382081A1/fr
Application granted granted Critical
Publication of EP3382081B1 publication Critical patent/EP3382081B1/fr
Priority to US17/154,198 priority patent/US11603614B2/en
Priority to US18/118,377 priority patent/US20230203729A1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • 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
    • 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
    • D04H3/033—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 reorientation immediately after yarn or filament formation
    • 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
    • D04H17/00—Felting apparatus
    • 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
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D—TEXTILES; PAPER
    • 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
    • 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
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • 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
    • 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple 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
    • 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
    • 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
    • D04H3/10—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 yarns or filaments made mechanically
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes

Definitions

  • the invention relates to a device for producing spunbonded nonwovens from continuous filaments, in particular continuous filaments of thermoplastic material, with at least one spinnerette for spinning the filaments, at least one cooling device for cooling the filaments, at least one drawing device for stretching the filaments and at least one depositing device for filing the filaments Filaments to the nonwoven web.
  • - Endless filaments means within the scope of the invention filaments with quasi endless length. These continuous filaments differ from staple fibers in that they have much smaller lengths of, for example, 10 to 60 mm.
  • Devices of the aforementioned type are known in practice in principle in different embodiments. Such devices are also referred to as spunbond devices. Many of the devices known from practice of this type have the disadvantage that at high filament speeds and high throughputs or production speeds, the quality of the Filamentablage leaves something to be desired. This applies in particular to the homogeneity of the deposit as well as the strength of the nonwoven webs produced. High filament speeds and low titers of the filaments produced can often only be realized with significant losses in quality of the nonwoven webs produced. In that regard, the known devices can be improved.
  • the invention is based on the technical problem of specifying a device of the type mentioned, in the high filament speeds and low titers and high production speeds can be realized and nonetheless the quality of the filament tray or the produced nonwoven web meets all requirements.
  • the invention teaches a device for producing spunbonded non-wovens, in particular of thermoplastic material, with at least one spinnerette for spinning the filaments, at least one cooling device for cooling the filaments, at least one drawing device for stretching the filaments and at least one Storage device, in particular in the form of a storage screen belt, for depositing the filaments to the nonwoven web, wherein between the drawing device and the depositing device or the Ablagesiebband at least one diffuser is arranged so that filaments and primary air from the drawing device into the diffuser, wherein at least two arranged on opposite sides of the diffuser secondary air inlet gaps are provided in the region of the at least one diffuser through which secondary air enters the diffuser, wherein at least one secondary air inlet gap, preferably at least two secondary air inlet gaps are formed with the proviso that the secondary air flows in an inflow angle ⁇ to the filament flow direction FS and to the longitudinal center plane M of the device or the diffuser, said inflow angle ⁇ less than 100 ° , is advantageously
  • the suction area extends with its width b below the diffuser over the entire width B of the diffuser outlet. It is also within the scope of the invention that the suction area is limited by two partitions arranged one behind the other in the machine direction. The width b of the suction region is measured, in particular, between the upper ends of the two partitions in the machine direction, facing the depositing device or the depositing screen belt. Conveniently, at least one exhaust fan is provided, is sucked with the process air in the suction through the storage device or by the Ablagesiebband.
  • a plurality of suction regions can be arranged one after the other in the machine direction-for example, three suction regions-which differ from one another, in particular with respect to their extraction speed. Then it is in the claimed in claim 1 suction to the arranged under the diffuser outlet or directly below the diffuser outlet Hauptabsaug Colour.
  • the suction area or main suction area arranged below the diffuser outlet or directly below the diffuser outlet can in turn be subdivided, for example through partitions.
  • this suction or Hauptabsaug Symposium Scheme is characterized in that the suction speed over the entire width b of the suction is equal or substantially equal.
  • the mean suction speed in the suction or Hauptabsaug Colour not more than 20%, in particular not more than 30% or not more than 40% and especially not more than 50%.
  • an additional suction area arranged upstream of the suction area or main suction area according to an embodiment variant with respect to the machine direction (MD) and / or additional suction space arranged behind the suction area or main suction area with respect to the machine direction (MD).
  • Absaug Scheme a suction speed is present, which is different from the suction speed of the suction or Hauptabsaug Kunststoffes.
  • the width b of the suction region is at least 1.2 times, preferably at least 1.3 times and particularly preferably at least 1.4 times the width B of the diffuser outlet.
  • the width b of the suction region can amount to at least 1.5 times, in particular at least 1.6 times or at least 1.7 times, the width B of the diffuser outlet.
  • a very preferred embodiment of the device according to the invention is characterized in that the suction region with respect to the machine direction (MD) extends beyond the storage area of the filaments around a first suction section across the width of the diffuser outlet and / or wherein the suction region with respect to the machine direction (MD) in front of the storage area the filaments extend beyond a second suction section over the width of the diffuser exit.
  • the suction area or the Kleinabsaug Scheme on both sides with respect to its width b beyond the width B of the diffuser outlet on the one side to the first suction and on the other side to the second suction section.
  • the width b 1 of the first suction section and / or the width b 2 of the second suction section is 2 to 30%, preferably 2.5 to 25% and particularly preferably 3 to 20% of the width B of the diffuser outlet.
  • a highly recommended embodiment of the invention is characterized in that the suction takes place by means of the suction device with the proviso that at least in the region of the diffuser outlet tertiary air flows along the outer surfaces of the diffuser walls in the direction of storage device or Ablagesiebband and at least a portion of this tertiary air the storage device or is sucked through the Ablagesiebband. It is within the scope of the invention that the tertiary air flows are aligned parallel or substantially parallel to the mixed flow of primary air and secondary air flowing in the direction of the diffuser outlet in the interior of the diffuser.
  • the volume flow of the tertiary air V T extracted with the suction device is at least 25%, preferably at least 30%, preferably at least 40% and particularly preferably at least 50% of the volume flow of the extracted primary and secondary air streams.
  • the preferred extraction of the tertiary air described above has proved successful insofar as unwanted turbulence in the storage area of the filaments can be avoided as a result.
  • the continuous filaments are produced with a spunbond apparatus.
  • the cooling device, the drawing device and the at least one diffuser transverse to the machine direction (MD) over the production width or across the width (DC width) extend the nonwoven web to be produced.
  • the unit of cooling device and drawing device is designed as a closed unit and except the supply of cooling air in the cooling device is no further supply of a fluid medium or no further air supply in this closed unit of cooling device and drawing device instead. This closed unit or this closed system has proven particularly useful in the context of the invention and contributes effectively to the solution of the technical problem.
  • the cooling device of the device according to the invention can only have a cooling chamber in which the filaments are exposed to cooling air or process air of a certain temperature.
  • the cooling device has two superposed or successively arranged cooling chambers. In these two cooling chambers, the filaments can each be charged with cooling air or process air of different temperatures.
  • the device can also be set up with the proviso that the exit velocity of the process air from an upper cooling chamber for cooling the filaments and the exit velocity from a lower cooling chamber is different.
  • the secondary air inlet gaps or the secondary air introduced through these secondary air inlet gaps are the secondary air inlet gaps. It is within the scope of the invention that the secondary air inlet gaps extend across the entire width of the device transversely to the machine direction (in the CD direction). According to a very preferred embodiment of the invention, two opposing secondary air inlet gaps are arranged between the drawing device and the diffuser adjoining the drawing device. According to an embodiment variant According to the invention, two diffusers are arranged behind one another in the filament flow direction FS and two opposite secondary air inlet gaps are provided between the two diffusers. -Two secondary air inlet gaps can be arranged at the same vertical height. However, it is also within the scope of the invention that the secondary air inlet gaps are provided at different vertical heights of the device. According to a preferred embodiment of the invention, only two opposing secondary air inlet gaps are present, and more preferably between drawing device and diffuser.
  • the inflow angle ⁇ of the secondary air is 80 ° to 110 °.
  • a recommended embodiment is characterized in that the inflow angle ⁇ is less than 90 °, preferably less than 80 °, preferably less than 70 ° and particularly preferably less than 65 °. It has proven particularly useful that the inflow angle ⁇ is less than 60 °, preferably less than 55 °, and very preferably less than 50 °.
  • the inflow angle ⁇ is between 0 and 60 °, advantageously between 1 and 55 °, preferably between 2 and 50 °, very preferably between 2 and 45 ° and particularly preferably between 2 and 40 °. It is particularly recommended that the inflow of the secondary air is carried out with the proviso that the secondary air flows after their entry parallel or quasi parallel to the filament flow direction FS.
  • the secondary air inlet gaps are expediently set up correspondingly for realizing the inflow angle ⁇ , in particular with the aid of inflow slopes and / or inflow channels and the like.
  • an oblique inflow wall adjoining or connected to a diffuser wall of the diffuser is provided for realizing the inflow angle ⁇ in the area of a secondary air inlet gap, which inflow wall encloses an angle with the filament flow direction FS which corresponds or substantially corresponds to the inflow angle ⁇ .
  • a corresponding inflow wall is preferably provided for each secondary air inlet gap. Such an inflow wall is recommended to form an inflow slope for realizing the inflow angle ⁇ .
  • inflow angle ⁇ has proven particularly useful in the context of the invention and contributes effectively to the solution of the technical problem.
  • a high-quality filament deposit and a particularly homogeneous nonwoven web can be obtained.
  • the closed system or the design of the unit of cooling device and drawing device as a closed unit.
  • primary air means the process air which is passed through the drawing device and exits from the drawing device or from the drafting shaft of the drawing device into the diffuser.
  • a very preferred embodiment of the invention is characterized in that in the region of the secondary air inlet column, the ratio of the volume flows of primary air and secondary air V P / V S is less than 5, preferably less than 4.8 and preferably less than 4.5.
  • the volume flow entering through the secondary air inlet column is the secondary air adjustable, preferably adjustable for each secondary air inlet gap and independently adjustable according to a variant embodiment. It is recommended that this is the cross section of the secondary air inlet column variable or adjustable.
  • the volume flow of secondary air entering through two secondary air inlet gaps arranged on opposite sides of the diffuser is equal to or substantially equal to or up to a maximum of 15%, in particular up to a maximum of 20% different.
  • the vertical height of the secondary air inlet gaps is preferably 2 to 20 mm, preferably 3 to 18 mm and particularly preferably 5 to 15 mm.
  • An embodiment of the invention is characterized in that the volume flow of the secondary air entering through the secondary air inlet gaps can be adjusted or varied over the CD width (transversely to the machine direction MD).
  • the vertical height of the secondary air inlet gap is expediently set or changed over the CD width (transversely to the machine direction MD).
  • the setting of the secondary air volume flows is recommended, provided that the volume flow of the incoming secondary air with respect to the CD direction to the edges of the device or to the edges of the secondary air inlet column decreases.
  • the secondary air volume flow entering through the secondary air inlet gaps is smaller only in the edge regions of the secondary air inlet gaps than in the central region of the secondary air inlet gaps.
  • These margins are recommended to have a length of 5 to 20 cm.
  • a maximum of 75%, preferably a maximum of 80%, of the secondary air volume flow which occurs in the central region of the secondary air inlet gap is expediently supplied in the edge regions.
  • a uniform inflow of secondary air through the secondary air inlet gaps takes place transversely to the machine direction or in the CD width of the device, specifically according to one embodiment variant of the invention, apart from the The aforementioned edge regions expediently in the entire central region of the secondary air inlet column.
  • the invention is based on the recognition that a particularly homogeneous Filamentablage can be achieved or a very homogeneous Filamentablage can be achieved over the CD width.
  • a highly recommended embodiment of the invention is characterized in that a convergent section of a diffuser or of the diffuser adjoins in the filament flow direction behind or below the secondary air inlet gaps.
  • a convergent section of the diffuser is initially arranged in the filament flow direction behind or below the secondary air inlet gaps, then adjoins a constriction of the diffuser and a divergent section of the diffuser is provided behind or under the constriction ( convergent - bottleneck - divergent). In the bottleneck as it compacts the inflowed secondary air or the primary air-secondary air mixture.
  • a preferred embodiment is characterized in that the convergent section of the diffuser is made shorter or significantly shorter than the divergent section of the diffuser.
  • the length I K of the convergent diffuser section is at most 75%, preferably at most 60% and preferably at most 50% of the length I D of the divergent section of this diffuser. It is recommended that the length I K of the convergent section of the diffuser amounts to a maximum of 40%, preferably a maximum of 35% and preferably a maximum of 30% of the length I D of the divergent diffuser section.
  • the ratio I K / I D of the length I K of the convergent diffuser section to the length I D of the divergent diffuser section is expediently 0.1 to 1 and preferably 0.15 to 0.9. It is recommended that the length I K of the convergent diffuser section is 5 to 50% and preferably 10 to 50% of the length L of the entire diffuser.
  • the diffuser exit angle ⁇ of the diffuser outlet - or of the last diffuser section arranged in the filament flow direction over the depositing device - is at most 30 °, preferably at most 25 ° and very preferably at most 20 °.
  • the diffuser exit angle ⁇ is measured between a diffuser wall of the divergent diffuser section and the longitudinal center axis M of the diffuser.
  • the diffuser walls of the diffuser outlet forming divergent diffuser section are formed pivotable, so that the diffuser exit angle ⁇ is variable or adjustable.
  • the width B of the diffuser outlet of the divergent diffuser section is at most 300%, preferably at most 250% and preferably at most 200% of the width V B of the exit slit of the drawing device or of the drawing shaft of the drawing device.
  • a particularly preferred embodiment of the invention is characterized in that the distance of the diffuser or the lower edge - in particular the lowermost lower edge - of the diffuser to the storage device or the Ablagesiebband 20 to 300 mm, in particular 30 to 150 mm and preferably 30 to 120 mm is.
  • a monomer suction device is arranged between the spinnerette and the cooling device.
  • This Monomerabsaugungsvorraum air is sucked from the Filament avoirsraum below the spinnerette.
  • the Monomerabsaugungsvorraum expediently has at least one suction chamber, to which preferably at least one suction fan is connected.
  • the at least one suction chamber is toward the filament-forming space with at least one suction slot provided for the extraction of said gases.
  • a particularly effective solution to the technical problem is further provided by a preferred embodiment of the invention, characterized in that at least a first deformable seal is arranged between the spinnerette and the monomer suction device for sealing a first gap formed between the spinnerette and the monomer suction device, and / or wherein at least one second deformable seal for sealing a second gap formed between the monomer suction device and the cooling device is provided between the monomer suction device and the cooling device and / or at least one third deformable seal for sealing between the cooling device and the drawing device or an intermediate channel of the drawing device a arranged between the cooling device and the drawing device or the intermediate channel third gap is arranged.
  • the system properties, in particular the contact pressure or the contact pressure of such a deformable seal with respect to the boundary areas or boundary surfaces of the respective gap are variable or adjustable.
  • Such a preferred deformable seal extends recommended over the entire width or over the entire CD width (transverse to the machine direction) of the device according to the invention. It is within the scope of the invention that such a deformable seal rotates over the entire circumference or substantially over the entire circumference of the filament flow passage. It is further within the scope of the invention that the height h of a gap to be sealed with a deformable seal is 3 to 35 mm, in particular 5 to 30 mm, and that the at least one deformable seal seals over this height h of the gap.
  • the at least one deformable seal is an inflatable seal.
  • the deformable seal may also have at least one by means of at least one spring element to a boundary surface of the gap to be sealed pressed sealing element.
  • the sealing element may in particular be a sealing lip and thus a spring-loaded sealing lip in the case of the seal.
  • the spring element is then expediently fixed to a boundary surface of the gap to be sealed and presses the sealing element or the sealing lip against the opposite boundary surface of the gap.
  • the at least one deformable seal is designed with the proviso that sealing takes place at a pressure in the filament flow channel of more than 2,000 Pa, in particular of more than 2,500 Pa.
  • the embodiment with the deformable seal has proven particularly useful in the context of the teaching according to the invention. In combination with the other inventive or preferred features of the device according to the invention optimum aerodynamic conditions in the device, which effectively contribute to solving the technical problem of the invention.
  • the invention is based on the finding that with the device according to the invention nonwoven webs or spunbonded nonwovens of excellent quality can be produced. Above all, with the aid of the teaching according to the invention, a homogeneous filament deposit and thus a homogeneous nonwoven web can be produced both in the machine direction and also transversely to the machine direction. An optimal homogeneous nonwoven storage can be achieved especially at higher or at high production speeds. With the invention Device are high filament speeds and thus low titers of the filaments feasible, nevertheless good homogeneous filament deposition. High filament speeds and low titers can be achieved without difficulty at high throughputs or production speeds of, for example, more than 400 m / min. It should be emphasized that the device according to the invention is nonetheless relatively simple and of little complexity.
  • the figures show a device according to the invention for producing spunbonded nonwovens from continuous filaments 1, in particular from continuous filaments 1 made of thermoplastic material.
  • the device has a spinnerette 2 for spinning the continuous filaments 1 and a cooling device 3 for cooling the filaments.
  • a monomer suction device 4 is arranged according to a particularly preferred embodiment of the invention. With this Monomerabsaugungsvoriques 4 occurring in the spinning process disturbing gases can be removed from the device. These may be, for example, monomers, oligomers or decomposition products and the like substances.
  • a gap 5 is formed, which is usually around the entire Filament Struktursraum or filament flow space circulates.
  • At least one deformable seal 6 for sealing said gap 5.
  • the at least one deformable seal 6 expediently circulates in the gap 5 over the entire filament-forming space or filament flow space. It is within the scope of the invention that the system properties, in particular the contact pressure or the contact pressure of the seal 6 with respect to the boundary surfaces of the gap 5 can be varied or adjusted.
  • the vertical height h of the gap 5 in the exemplary embodiment may be 5 to 30 mm and the at least one deformable seal 6 seals the gap 5 via this vertical height h of the gap 5.
  • the at least one deformable seal 6 is a seal 6 that can be inflated with a fluid medium.
  • the fluid medium-preferably air-the system properties in particular the contact pressure or contact pressure of the seal 6 can be achieved be varied.
  • the cooling device 3 has two superposed or successively arranged cooling chambers, in which the filaments can be acted upon in particular with process air or cooling air of different temperature.
  • a cooling device 3 with only one cooling chamber is also possible within the scope of the invention.
  • the cooling device 3 is followed by a drawing device 7 for stretching the filaments 1 in the filament flow direction FS.
  • the cooling device 3 is adjoined by an intermediate channel 8, which connects the cooling device 3 to a drawing shaft 9 of the drawing device 7 connects.
  • the unit from the cooling device 3 and the drawing device 7 and the unit from the cooling device 3, the intermediate channel 8 and the drawing shaft 9 is formed as a closed system. Apart from the supply of cooling air in the cooling device 3 no further air supply takes place in this unit.
  • the guided through the drawing device 7 and through the drawing tray 9 air is referred to here and below as the primary air P.
  • At least one diffuser 10 adjoins the drawing device 7 in the filament flow direction FS.
  • two opposing secondary air inlet gaps 11, 12 for the introduction of secondary air S are arranged between drawing device 7 or between drawing shaft 9 and the diffuser 10.
  • the secondary air inlet gaps 11, 12 extend over the entire width or CD width of the device according to the invention.
  • the secondary air is introduced through the secondary air inlet column with an inflow angle ⁇ , which is less than 100 °, advantageously less than or equal to 90 °, preferably less than 80 ° and less than 45 ° in the embodiment.
  • the inflow angle ⁇ is between 0 and 60 °, preferably between 2 and 50 °.
  • the inflow angle ⁇ are in the embodiment (see in particular Fig. 2 ) provided corresponding inflow guides 13, which are formed in the embodiment as obliquely connected to the secondary air inlet gaps 11, 12 inflow channels 14.
  • the inflow channels 14 form an angle with the filament flow direction FS or with the longitudinal center axis M, with the proviso that the secondary air can flow in at the indicated inflow angle ⁇ .
  • To Particularly preferred embodiment is a quasi-parallel inflow of secondary air to the filament flow direction FS instead.
  • the volume flow of secondary air supplied through the secondary air inlet gaps 11, 12 can be adjusted. This can be realized in particular by adjusting the cross sections of the secondary air inlet gaps 11, 12. In principle, different volumetric flows of supplied secondary air S can also be set for the two opposing secondary air inlet gaps 11, 12. According to one embodiment of the invention, the secondary air volume flow flowing through the secondary air inlet gaps 11, 12 can be adjusted or varied transversely to the machine direction or over the CD width, preferably with respect to each secondary air inlet gap 11, 12. Expediently, the supplied secondary air volume flow in the edge regions of the device or the secondary air inlet gaps 11, 12 is different in comparison to the central region of the device or to the middle region of the secondary air inlet gaps 11, 12.
  • the ratio of the volume flows of primary air and secondary air V P / V S is less than 5 and preferably less than 4.5.
  • a diffuser 10 in the filament flow direction FS below the drawing device 7 is present.
  • two or more diffusers 10 can be connected in series.
  • the intended in the embodiment of the figures Diffuser 10, according to a preferred embodiment in the filament flow direction FS behind or below the secondary air inlet gaps 11, 12 on a convergent diffuser section 15.
  • a constriction 16 of the diffuser 10 at this convergent diffuser portion 15 includes preferred and in the embodiment, a constriction 16 of the diffuser 10 at.
  • the diffuser 10 is preferably equipped with a divergent diffuser section 17 in the exemplary embodiment.
  • the divergent diffuser portion 17 of the diffuser 10 in the filament flow direction FS longer or significantly longer than the convergent diffuser section 15.
  • the length I K of the convergent diffuser section 15 is less than 50% of the length I D of the divergent diffuser section 17th
  • the diffuser exit angle ⁇ between a diffuser wall 18 of the divergent diffuser section 17 and the longitudinal center axis M of the diffuser 10 is a maximum of 25 °.
  • the width B of the diffuser outlet 19 is at most 300%, preferably at most 250%, of the width V B of the exit slit 20 of the drawing shaft 9.
  • the continuous filaments 1 emerging from the diffuser 10 are deposited on a filing tray or nonwoven web 22 depositing device designed as a filing belt 21.
  • the filament deposit or nonwoven web 22 is then conveyed away or transported away with the deposit cloth belt 21 in the machine direction MD.
  • an extraction device is provided for extracting air or process air through the depositing device or through the deposit screen belt 21.
  • a suction region 23 is arranged below the diffuser outlet 19, which has a width b in the machine direction (MD). This width b of the suction region 23 is according to the invention greater than the width B of the diffuser exit 19. In the Fig. 2 the widths b and B are shown.
  • the width b of the suction region 23 is at least 1.2 times, preferably at least 1.3 times the width B of the diffuser exit 19.
  • the width B of the diffuser exit 19 is a horizontal distance of the lower ends the diffuser walls 18 measured. If the ends of the diffuser walls 18 of the divergent diffuser section 17 do not terminate in the same horizontal plane or at the same vertical height, preferably the distance of the end of the longer diffuser wall 18 from the end of the elongated shorter diffuser wall 18 is at the same vertical height measured.
  • the suction area 23 arranged below the storage belt 21 is delimited by two partitions 27, 28 arranged one behind the other in the machine direction MD.
  • the width b of the suction region 23 is measured as a distance between the two partitions 27, 28, and in particular as a distance between the upper ends of the two partitions 27, 28.
  • the suction region 23 with respect to the machine direction (MD) behind the storage area of the filaments 1 extends beyond a first suction section 24 via the diffuser exit 19 or across the width B of the diffuser exit 19.
  • the suction region 23 protrudes beyond the deposition region of the filaments 1 by a second suction section 25 beyond the diffuser exit 19 or across the width B of the diffuser exit 19.
  • the first suction section 24 has a width b 1 and the second suction section 25 has a width b 2 .
  • the widths b 1 and b 2 are the same size. In principle, however, they could also be designed differently.
  • the suction is carried out by the Ablagesiebband 21 with the proviso that flows in the region of the diffuser outlet 19 tertiary air T along the outer surfaces 26 in the direction of Ablagesiebband 21.
  • the streams of tertiary air T are aligned parallel or substantially parallel to the mixed flow of primary air P and secondary air S flowing in the direction of the diffuser outlet 19 of the diffuser 10.
  • primary air P and secondary air S and tertiary air T is sucked.
  • the streams of primary air P, secondary air S and tertiary air T flow parallel or quasi parallel through the deposit screen belt 21.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Nonwoven Fabrics (AREA)
EP17164375.2A 2017-03-31 2017-03-31 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus Active EP3382081B1 (fr)

Priority Applications (21)

Application Number Priority Date Filing Date Title
ES17164375T ES2751161T3 (es) 2017-03-31 2017-03-31 Dispositivo para la fabricación de material tejido de filamentos continuos
EP17164375.2A EP3382081B1 (fr) 2017-03-31 2017-03-31 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus
PL17164375T PL3382081T3 (pl) 2017-03-31 2017-03-31 Urządzenie do wytwarzania włóknin typu spunbond z filamentów bez końca
DK17164375T DK3382081T3 (da) 2017-03-31 2017-03-31 Indretning til fremstilling af filterduge af endeløse filamenter
JOJO/P/2018/0032A JOP20180032B1 (ar) 2017-03-31 2017-03-31 جهاز لإنتاج مادة منسوجة من خيوط متواصلة
SI201730134T SI3382081T1 (sl) 2017-03-31 2017-03-31 Naprava za proizvodnjo tkanih polsti iz brezkončnih filamentov
CA2997488A CA2997488C (fr) 2017-03-31 2018-03-06 Dispositif de production de liens par cablage a partir de filaments sans fin
ZA2018/01818A ZA201801818B (en) 2017-03-31 2018-03-19 Device for producing spunbonds from endless filaments
CONC2018/0003214A CO2018003214A1 (es) 2017-03-31 2018-03-23 Dispositivo para la fabricación de textiles no tejidos de filamentos sinfín
MX2018003621A MX378846B (es) 2017-03-31 2018-03-23 Dispositivo para la fabricacion de textiles no tejidos de filamentos sinfin
MYPI2018701192A MY191354A (en) 2017-03-31 2018-03-26 Device for the manufacture of woven material from continuous filaments
KR1020180035044A KR102213092B1 (ko) 2017-03-31 2018-03-27 끝이 없는 필라멘트들로부터 스펀본드들을 제조하기 위한 장치
ARP180100736A AR111445A1 (es) 2017-03-31 2018-03-27 Dispositivo para la fabricación de textiles no tejidos de filamentos sinfín
SA118390477A SA118390477B1 (ar) 2017-03-31 2018-03-28 جهاز لإنتاج ألياف مترابطة مغزولة من شعيرات متصلة
RU2018111083A RU2704908C2 (ru) 2017-03-31 2018-03-28 Устройство для изготовления фильерных нетканых материалов из элементарных нитей
JP2018063809A JP6851341B2 (ja) 2017-03-31 2018-03-29 無端フィラメントから、スパンボンデット不織布を製造するための装置
US15/939,753 US20180282926A1 (en) 2017-03-31 2018-03-29 Apparatus for making spunbond from continuous filaments
BR102018006571-8A BR102018006571B1 (pt) 2017-03-31 2018-03-29 Dispositivo para a fabricação de não-tecidos de filamento contínuo a partir de filamentos contínuos
CN201810295003.0A CN108691097B (zh) 2017-03-31 2018-03-30 用来由长丝生产纺粘织物的设备
US17/154,198 US11603614B2 (en) 2017-03-31 2021-01-21 Apparatus for making spunbond
US18/118,377 US20230203729A1 (en) 2017-03-31 2023-03-07 Apparatus for making spunbond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17164375.2A EP3382081B1 (fr) 2017-03-31 2017-03-31 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus

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EP3382081A1 true EP3382081A1 (fr) 2018-10-03
EP3382081B1 EP3382081B1 (fr) 2019-08-28

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EP (1) EP3382081B1 (fr)
JP (1) JP6851341B2 (fr)
KR (1) KR102213092B1 (fr)
CN (1) CN108691097B (fr)
AR (1) AR111445A1 (fr)
CA (1) CA2997488C (fr)
CO (1) CO2018003214A1 (fr)
DK (1) DK3382081T3 (fr)
ES (1) ES2751161T3 (fr)
JO (1) JOP20180032B1 (fr)
MX (1) MX378846B (fr)
MY (1) MY191354A (fr)
PL (1) PL3382081T3 (fr)
RU (1) RU2704908C2 (fr)
SA (1) SA118390477B1 (fr)
SI (1) SI3382081T1 (fr)
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PL3771762T3 (pl) * 2019-07-30 2021-11-08 Reifenhäuser GmbH & Co. KG Maschinenfabrik Urządzenie i sposób do wytwarzania włókniny z włókien
CN111155240B (zh) * 2020-01-22 2024-07-16 宏大研究院有限公司 一种用于纺粘非织造布设备的切向补风装置
CN112458557B (zh) * 2020-10-19 2022-01-18 福建智罗科技有限公司 熔喷机、基于该熔喷机制备复合布的方法
CN112609332B (zh) * 2020-11-20 2023-09-12 滁州天鼎丰非织造布有限公司 一种成网下吸风接口装置及无纺布生产系统
WO2023146913A1 (fr) * 2022-01-25 2023-08-03 Rowan University Assemblage d'un fil de nanofibres polymères courtes
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CN116695266B (zh) * 2023-08-09 2023-11-17 江苏新视界先进功能纤维创新中心有限公司 气流牵伸系统、包含该气流牵伸系统的装置及应用

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DK3382081T3 (da) 2019-11-11
SA118390477B1 (ar) 2021-11-23
JP6851341B2 (ja) 2021-03-31
RU2018111083A3 (fr) 2019-10-02
JP2018172841A (ja) 2018-11-08
BR102018006571A2 (pt) 2018-11-21
RU2704908C2 (ru) 2019-10-31
CN108691097A (zh) 2018-10-23
AR111445A1 (es) 2019-07-17
MX378846B (es) 2025-03-11
JOP20180032A1 (ar) 2019-01-30
RU2018111083A (ru) 2019-10-02
ES2751161T3 (es) 2020-03-30
MX2018003621A (es) 2018-11-22
ZA201801818B (en) 2019-01-30
CN108691097B (zh) 2021-10-29
US20180282926A1 (en) 2018-10-04
JOP20180032B1 (ar) 2020-07-05
MY191354A (en) 2022-06-18
KR102213092B1 (ko) 2021-02-04
PL3382081T3 (pl) 2020-03-31
KR20180111576A (ko) 2018-10-11
CO2018003214A1 (es) 2019-03-29
SI3382081T1 (sl) 2020-01-31
CA2997488C (fr) 2021-04-06
CA2997488A1 (fr) 2018-09-30
EP3382081B1 (fr) 2019-08-28

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