EP3575470B1 - 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
EP3575470B1
EP3575470B1 EP18174523.3A EP18174523A EP3575470B1 EP 3575470 B1 EP3575470 B1 EP 3575470B1 EP 18174523 A EP18174523 A EP 18174523A EP 3575470 B1 EP3575470 B1 EP 3575470B1
Authority
EP
European Patent Office
Prior art keywords
flow
straightener
cooling air
filaments
flow channels
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.)
Active
Application number
EP18174523.3A
Other languages
German (de)
English (en)
Other versions
EP3575470A1 (fr
Inventor
Michael Nitschke
Tristan Kretschmann
Martin Neuenhofer
Hans-Georg Geus
Detlef Frey
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
Priority to SI201830170T priority Critical patent/SI3575470T1/sl
Application filed by Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Priority to DK18174523.3T priority patent/DK3575470T3/da
Priority to ES18174523T priority patent/ES2841727T3/es
Priority to EP18174523.3A priority patent/EP3575470B1/fr
Priority to JP2019081747A priority patent/JP7168517B2/ja
Priority to CA3041248A priority patent/CA3041248C/fr
Priority to MYPI2019002375A priority patent/MY193453A/en
Priority to AU2019202944A priority patent/AU2019202944B2/en
Priority to PE2019000936A priority patent/PE20191854A1/es
Priority to MX2019005374A priority patent/MX2019005374A/es
Priority to ARP190101222A priority patent/AR114883A1/es
Priority to CONC2019/0004689A priority patent/CO2019004689A1/es
Priority to TNP/2019/000154A priority patent/TN2019000154A1/en
Priority to KR1020190057387A priority patent/KR102399905B1/ko
Priority to BR102019010160A priority patent/BR102019010160A2/pt
Priority to CL2019001363A priority patent/CL2019001363A1/es
Priority to IL266793A priority patent/IL266793B/en
Priority to US16/423,048 priority patent/US11001942B2/en
Priority to RU2019116345A priority patent/RU2739285C2/ru
Priority to UAA201905798A priority patent/UA122948C2/uk
Priority to JOP/2019/0119A priority patent/JOP20190119B1/ar
Priority to CN201910448326.3A priority patent/CN110541242B/zh
Priority to MA45970A priority patent/MA45970B1/fr
Publication of EP3575470A1 publication Critical patent/EP3575470A1/fr
Application granted granted Critical
Publication of EP3575470B1 publication Critical patent/EP3575470B1/fr
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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
    • D04H3/08—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
    • D04H3/11—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 by fluid jet
    • 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
    • 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
    • D01D5/088—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
    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • 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
    • 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
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/04—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyesters, e.g. polyethylene terephthalate [PET]

Definitions

  • the invention relates to a device for the production of spunbonded nonwovens from continuous filaments, in particular from continuous filaments made of thermoplastic material, a spinnerette being provided for spinning the continuous filaments and a cooling chamber for cooling the spun filaments with cooling air, with one on opposite sides of the cooling chamber Air supply cabin is arranged and wherein cooling air can be introduced into the cooling chamber from the opposite air supply cabin, and flow straighteners are provided in the air supply cabin for rectifying the introduced cooling air.
  • - Spunbond nonwoven in the context of the invention means in particular a spunbond nonwoven produced by the spunbond process. Because of their quasi-endless length, continuous filaments differ from staple fibers, which have much shorter lengths of, for example, 10 mm to 60 mm.
  • the invention is based on the technical problem of specifying a device for producing spunbonded webs from continuous filaments with which very homogeneous spunbonded webs can be produced that are at least largely free of flaws or defects, in particular at higher throughputs of more than 200 kg / h / m and / or at high thread speeds.
  • the invention teaches a device for the production of spunbonded nonwovens from continuous filaments - in particular from continuous filaments made of thermoplastic material - wherein a spinnerette is provided for spinning the continuous filaments, a cooling chamber for cooling the spun filaments with cooling air being provided, with an two opposite sides of the cooling chamber each have an air supply cabin, and cooling air can be introduced into the cooling chamber from the opposite air supply cabin, wherein in at least one of the two air supply cabins, preferably in each of the two air supply cabins, at least one flow straightener is provided for rectifying the cooling air flow impinging on the filaments, one flow straightener having a plurality of transverse to the direction of movement the filaments or the filament stream has oriented flow channels, these flow channels being delimited by channel walls, wherein the open area of a flow straightener is greater than 85%, preferably greater than 90% and wherein the ratio of the length L of the flow channels to the inner diameter D i of the flow channels L / D i is 1 to 15,
  • the open area of a flow straightener is greater than 91%, preferably greater than 92% and particularly preferably greater than 92.5%.
  • the open area of the flow straightener refers in particular to the free flow cross section of the flow straightener, which is not limited by the duct walls or the thickness of the duct walls and / or spacers possibly arranged between the flow ducts or the duct walls.
  • no flow screens with their meshes that are arranged in the area of the flow straightener and above all are arranged in front of or behind the flow straightener. These flow screens or similar components are expediently disregarded when calculating the open area.
  • the open area of a flow straightener is only calculated by adding up the open partial areas of all flow channels in relation to the total area of the flow straightener.
  • the named open area and the total area of the flow straightener are arranged transversely, in particular perpendicular or essentially perpendicular to the flow channels and thus forms a cross-sectional area of the flow straightener.
  • D i means the inside diameter of the flow channels. It thus becomes opposite for a flow channel starting from one channel wall Channel wall measured. If a flow channel has different diameters with regard to its cross section, D i means in particular the smallest inside diameter of the flow channel. The smallest inner diameter D i therefore relates here and below to the smallest inner diameter measured in a flow channel if this flow channel has different inner diameters with regard to its cross section. The smallest inside diameter of a cross-section in the form of a regular hexagon is measured between two opposite sides and not between two opposite corners.
  • the ratio of the length L of the flow channels to the inner diameter D i of the flow channels L / D i is 2 to 8, preferably 2.5 to 7.5, preferably 2.5 to 7 and very preferably 3 to 6.5 .
  • the ratio L / D i is 4 to 6, in particular 4.5 to 5.5. If, with a plurality of flow channels, different lengths L of the flow channels and / or different inside diameters D i or smallest inside diameter D i of the flow channels should be present, L means the mean length and / or D i the mean inside diameter or smallest inside diameter.
  • Machine direction means, here and below, the direction in which the filaments or the fleece deposit placed on a depositing device or on a depositing screen belt are / will be transported away. It is within the scope of the invention that the two air supply cabins or the flow straighteners extend transversely to the machine direction (CD direction) and that the cooling air is thus introduced essentially in the machine direction (MD) or counter to the machine direction.
  • the flow straighteners according to the invention With the flow straighteners according to the invention, a uniform, homogeneous flow of cooling air over the width of the system or in CD direction can be achieved.
  • the invention is based on the knowledge that influencing the cooling or the cooling air flow in the cooling chamber and in particular the special design of the flow straighteners results in a very effective equalization of the filament deposition or fleece deposition. Due to the cooling according to the invention and in particular due to the design of the flow straightener, surprisingly homogeneous spunbonded nonwovens can be produced which are largely free of flaws or defects. This is especially true for higher throughputs and higher yarn speeds specified below.
  • the cooling air supply for the cooling chamber takes place by sucking in the cooling air due to the filament movement or the downward filament flow and / or by actively blowing in or introducing cooling air, for example by means of at least one fan.
  • the flow straighteners according to the invention are intended to effect a directed blowing on of the filaments, specifically expediently blowing transversely, preferably perpendicular to the filament axis or to the direction of flow of the filaments. It is also within the scope of the invention that the flow straighteners ensure a uniform or homogeneous flow of cooling air to the filaments.
  • a homogeneous flow of cooling air onto the filaments here preferably means a homogeneous or uniform flow over the width of the device transversely to the machine direction, that is to say over the CD direction.
  • the flow can differ fundamentally over the height of the cooling air chamber or the flow straightener. It is recommended that the flow straighteners according to the invention ensure, in particular, a uniform alignment of the air flow vectors, with the amount of the air velocity expediently remaining largely unchanged.
  • the inventive design of A flow straightener in particular fulfills the above-described effect of a uniform or directed blowing of cooling air onto the filaments in the cooling chamber.
  • the same or essentially the same volume flows of cooling air are introduced into the cooling chamber from both opposite air supply cabins. In principle, however, it is also within the scope of the invention that different volume flows of cooling air are introduced into the cooling chamber from both air supply cabins.
  • each air supply cabin is divided into at least two cabin sections, from which cooling air of different temperatures can be supplied. It is recommended that each air supply cabin has two cabin sections arranged one above the other or vertically one above the other, from which the cooling air of different temperatures is supplied. Cooling air of the same temperature is expediently introduced into the cooling chamber from two opposite cabin sections of two air supply cabins. According to a preferred embodiment of the invention, each air supply cabin is divided into only two cabin sections, from each of which cooling air of different temperatures can be supplied. According to another embodiment, an air supply cabin has three or more cabin sections from which cooling air of different temperatures can be introduced into the cooling chamber. - A flow straightener is preferably present in the area of each cabin section of the air supply cabin.
  • a flow straightener expediently extends over all cabin sections of an air supply cabin. According to a preferred embodiment, a flow straightener extends over the entire height and / or width of the associated air supply cabin or essentially over the entire height and / or width of the associated air supply cabin.
  • a particularly recommended embodiment of the invention is characterized in that at least one flow straightener has at least one flow screen on its cooling air inflow side and / or on its cooling air outflow side. It is within the scope of the invention that a flow screen or the surface of a flow screen is arranged transversely and preferably perpendicular or substantially perpendicular to the longitudinal direction of the flow channels of a flow straightener.
  • a flow straightener is recommended to have such a flow screen both on its cooling air inflow side and on its cooling air outflow side.
  • a flow sieve is expediently tensioned or held or fastened under prestress on the cooling air inflow side and / or on the cooling air outflow side of a flow straightener.
  • a flow screen is arranged or rests directly on the flow straightener on the cooling air inflow side and / or on the cooling air outflow side of the flow straightener.
  • the homogeneous flow onto the filaments with the cooling air should be supported with the preferably provided flow screens.
  • a flow screen have a mesh size or an average mesh size of 0.1 to 0.5 mm, expediently from 0.1 to 0.4 mm and preferably from 0.15 to 0.34 mm.
  • Mesh size means here in particular the distance between two opposing wires of the flow screen or the screen fabric of the flow screen.
  • the mesh size is in particular the smallest distance of two opposite ones Wires of a mesh meant. If a flow screen has rectangular meshes with rectangular sides of different lengths, the mesh size means the distance between the two longer rectangular sides.
  • a flow sieve is recommended to have a wire thickness or average wire thickness of 0.05 to 0.35 mm, preferably 0.05 to 0.32 mm, preferably 0.06 to 0.30 mm and very preferably 0.07 to 0 , 28 mm.
  • a flow screen has the same or the same size mesh or substantially the same or the same size mesh over its screen surface.
  • the open area of a flow screen is 15 to 55%, expediently 20 to 50% and preferably 25 to 45%.
  • the open area of the flow screen means in particular the open area of the flow screen not occupied by the wire mesh and thus the area of the flow screen through which the cooling air can flow.
  • a preferred embodiment of the invention is characterized in that a flow straightener and a flow screen arranged on its cooling air inflow side and / or a flow screen arranged on its cooling air outflow side are accommodated in a common frame.
  • Preferably at least one such frame with a flow straightener and at least one flow screen is arranged on both opposite sides of the cooling chamber or on both air supply cabins.
  • the flow channels of the flow straightener or the flow straightener are arranged transversely to the direction of flow of the filaments and expediently transversely to the longitudinal center line M of the device.
  • the flow channels are oriented perpendicular or substantially perpendicular to the flow direction of the filaments or to the longitudinal center axis M of the device. It is within the scope of the invention that the flow channels are oriented perpendicular or essentially perpendicular to a plane oriented orthogonally to the machine direction (MD) or to a vertical plane running through the longitudinal center axis M of the device. In principle, however, it is also possible for the flow channels to be arranged at an angle to the planes mentioned.
  • the angle of the oblique orientation of the flow channels of a flow straightener can be uniform or different.
  • a very preferred embodiment of the invention is characterized in that the flow channels of a flow straightener have a polygonal cross section, specifically preferably a square to octagonal cross section.
  • a highly recommended embodiment of the invention is characterized in that the flow channels of a flow straightener are equipped with a hexagonal cross section. For this preferred case, the flow channels are thus designed as it were honeycomb.
  • the flow channels of a flow straightener have a round cross section, the flow channels preferably being designed with a circular or oval cross section.
  • the circular cross section is preferred.
  • An additional embodiment of the invention is characterized in that the channel walls of the flow channels are wing-shaped or wing-shaped.
  • the airfoil-shaped duct walls in particular exercise a directional function with regard to the cooling air flowing through. Rectangular or substantially rectangular flow channels are expediently formed between the wing-shaped or airfoil-shaped channel walls. It is within the scope of the invention that the smallest distance between two adjacent wing-shaped or airfoil-shaped duct walls is 2 to 15 mm, preferably 3 to 12 mm and preferably 5 to 10 mm.
  • a highly recommended embodiment of the invention is characterized in that the inner surface of a flow straightener through which the cooling air flows is 5 to 50 m 2 , preferably 7.5 to 45 m 2 and preferably 10 to 40 m 2 per square meter of flow cross section of the flow straightener.
  • the inner surface through which the cooling air flows is calculated from the sum of the surfaces of the duct walls of the flow ducts through or against which flow per square meter of flow cross section of the flow straightener. It is within the scope of the invention that the flow sieves of the flow straightener are not taken into account when calculating this inner surface through which flow occurs.
  • the length L of the flow channels of a flow straightener is 15 to 65 mm, preferably 20 to 60 mm, preferably 20 to 55 mm and very preferably 25 to 50 mm.
  • the inside diameter or the smallest inside diameter D i of the flow channels is recommended to be 2 to 15 mm, preferably 3 to 12 mm, preferably 4 to 11 mm and very preferably 5 to 10 mm.
  • the flow channels in a flow straightener are arranged compact and close to one another. In a flow straightener, flow channel preferably adjoins flow channel and, according to one embodiment, only spacers can be present between the flow channels.
  • the mutual spacing of the flow channels or at least the majority of the flow channels is recommended to be smaller or significantly smaller than the smallest inner diameter D i of a flow channel.
  • the flow channels are expediently arranged in a flow straightener according to the principle of the closest packing.
  • At least one supply line for supplying the cooling air with a cross-sectional area Qz is connected to each air supply cabin, this cross-sectional area Qz of the supply line increasing to a cross-sectional area Q L of the air supply cabin when the cooling air passes into the supply cabin, whereby the cross-sectional area Q L is at least twice as large, preferably at least three times as large and preferably at least four times as large as the cross-sectional area Qz of the supply line.
  • the cross-sectional area Qz of the supply line expediently expands to 3 to 15 times the cross-sectional area Q L of the air supply cabin.
  • the cooling volume flow supplied to an air supply cabin is divided into a plurality of partial volume flows, which partial volume flows flow through separate partial supply lines and / or through the segments of a segmented supply line.
  • the cooling air volume flow can in particular be divided into two to five, preferably two to three partial volume flows. If each partial volume flow flows in through a separate partial supply line, the cross-sectional area Q Z of the partial supply line expands to the cross-sectional area Q L of the relevant cabin section of the air supply cabin.
  • the cross-sectional area Q L is preferably at least twice as large, preferably at least three times as large as the cross-sectional area Q Z of the partial feed line.
  • the cross-sectional area Q Z of a supply line or a partial supply line expand in steps - in particular in several stages - or continuously to the cross-sectional area Q L of the air supply cabin or to the cross-sectional area of a cabin section of the air supply cabin.
  • At least one flat homogenizing element for homogenizing the cooling air flow introduced into the air supply cabin is arranged in the air supply cabin in the flow direction of the cooling air upstream of the flow straightener and at a distance from the flow straightener. It is within the scope of the invention that a flat homogenization element has a plurality of openings and that the free open area of the flat homogenization element is 1 to 20%, preferably 2 to 18% and preferably 2 to 15% of the total area of the flat homogenization element.
  • At least one homogenization element is designed as a perforated element, in particular as a perforated plate, with a plurality of perforated openings, the perforated openings preferably having an opening diameter of 1 to 10 mm, preferably 1.5 to 9 mm and very preferably 1.5 to 8 mm.
  • a homogenizing element is designed as a homogenizing sieve with a plurality or with a plurality of meshes, the homogenizing sieve preferably Mesh sizes from 0.1 to 0.5 mm, preferably from 0.12 to 0.4 mm and very preferably from 0.15 to 0.35 mm.
  • the at least one flat homogenization element is arranged at a distance a 1 of at least 50 mm, preferably of at least 80 mm and preferably of at least 100 mm in the flow direction of the cooling air in front of the flow straightener of the corresponding air supply cabin or in front of the flow screen of this flow straightener .
  • a plurality of homogenizing elements are expediently arranged at a distance from the flow straightener in the flow direction of the cooling air one behind the other and at a distance from one another in an air supply cabin.
  • the distance between two homogenizing elements arranged one behind the other in an air supply cabin in the direction of flow is at least 50 mm, preferably at least 80 mm and preferably at least 100 mm.
  • the continuous filaments are spun out by means of a spinnerette and fed to the cooling chamber with the air supply cabins and flow straighteners.
  • at least one spinning beam for spinning the filaments is arranged transversely to the machine direction (MD direction).
  • the spinning beam is oriented perpendicular or essentially perpendicular to the machine direction.
  • the spinning beam it is also possible for the spinning beam to be arranged at an angle to the machine direction.
  • at least one monomer suction device is provided between the spinnerette or the spinning beam and the cooling chamber.
  • the monomer suction device With the monomer suction device, air is sucked out of the filament formation space below the spinnerette. In this way, the gases such as monomers, oligomers, decomposition products and the like that escape in addition to the continuous filaments can be removed from the device according to the invention.
  • a The monomer suction device expediently has at least one suction chamber to which at least one suction fan is preferably connected. It is recommended that the cooling chamber according to the invention with the air supply cabins and flow straighteners adjoin the monomer suction device in the direction of flow of the filaments.
  • the filaments are introduced from the cooling chamber into a drawing device for drawing the filaments.
  • the cooling chamber is followed by an intermediate channel which connects the cooling chamber with a stretching shaft of the stretching device.
  • the unit from the cooling chamber and the stretching device or the unit from the cooling chamber, the intermediate channel and the stretching shaft is designed as a closed system.
  • a closed system means in particular that, apart from the supply of cooling air into the cooling chamber, no further air is supplied to this unit.
  • the flow straighteners used according to the invention are distinguished above all by special advantages in such a closed system. A particularly simple and effective equalization of the air flow or cooling air flow is possible here.
  • At least one diffuser preferably adjoins the stretching device in the direction of flow of the filaments, the filaments being guided through this diffuser.
  • the diffuser comprises a diffuser cross-section or a divergent diffuser section that widens in the direction in which the filaments are deposited.
  • the filaments are deposited on a depositing device for filament depositing or for depositing fleece.
  • the storage device is expediently around a storage screen belt or around an air-permeable storage screen belt.
  • the nonwoven web formed from the filaments is conveyed away in the machine direction (MD) with the depositing device or with the depositing screen belt.
  • process air is sucked through the depositing device or through the depositing screen belt or sucked in from below, at least in the deposit area of the filaments.
  • a particularly stable filament deposit or fleece deposit is achieved in this way. This suction is of advantageous importance within the scope of the invention in combination with the flow straighteners according to the invention.
  • the nonwoven web is expediently fed to further treatment measures, in particular calendering.
  • the device according to the invention is designed or set up with the proviso that it is possible to work with thread speeds or filament speeds above 2000 m / min, in particular with thread speeds above 2200 m / min or above 2500 m / min , for example with a thread speed in the range of 3000 m / min.
  • These filament speeds can be used in the context of the production of filaments or spunbonded nonwovens from polyolefins, in particular from polypropylene.
  • 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 comprises a spinnerette 2 for spinning the endless filaments 1.
  • These spun endless filaments 1 are introduced into a cooling device 3 with a cooling chamber 4 and with air supply cabins 5, 6 arranged on two opposite sides of the cooling chamber 4.
  • the cooling chamber 4 and the air supply cabins 5, 6 extend transversely to the machine direction MD and thus in the CD direction of the device. Cooling air is introduced into the cooling chamber 4 from the opposite air supply cabins 5, 6.
  • a monomer suction device 7 is preferably arranged between the spinnerette 2 and the cooling device 3 and in the exemplary embodiment. With this monomer suction device 7 interfering gases occurring during the spinning process can be removed from the device. These gases can be, for example, monomers, oligomers or decomposition products and similar substances.
  • the cooling device 3 is followed by a drawing device 8 in which the filaments 1 are drawn.
  • the stretching device 8 preferably and in the exemplary embodiment has an intermediate channel 9 which connects the cooling device 3 to a stretching shaft 10 of the stretching device 8.
  • the unit from the cooling device 3 and the stretching device 8 or the unit from the cooling device 3, the intermediate channel 9 and the stretching shaft 10 is designed as a closed system.
  • a closed system means that apart from the supply of cooling air in the cooling device 3, no further air is supplied to this unit.
  • secondary air inlet gaps 12 for introducing secondary air into the diffuser 11 are provided between the stretching device 8 or between the stretching shaft 10 and the diffuser 11.
  • the filaments 1 are preferably and in the exemplary embodiment deposited on a depositing device designed as a depositing screen belt 13.
  • the filament deposit or the nonwoven web 14 is then expediently conveyed or transported away in the machine direction MD, and in the exemplary embodiment with the depositing screen belt 13.
  • a suction device is provided under the depositing device or below the depositing screen belt 13 for sucking off air or process air through the depositing device or through the depositing screen belt 13.
  • a suction area 15 is preferred and arranged in the exemplary embodiment below the diffuser outlet under the screen belt 13.
  • the extends Suction area 15 at least over the width B of the diffuser outlet.
  • the width b of the suction area 15 is greater than the width B of the diffuser outlet.
  • each air supply cabin 5, 6 is divided into two cabin sections 16, 17 from which cooling air of different temperatures can be supplied.
  • each cooling air having a temperature T 1 can be fed while from the two lower portions 17 each cabin cooling air a direction different from the temperature T 1 Temperature T can be fed to the second
  • a flow straightener 18 is arranged in each air supply cabin 5, 6 on the cooling chamber side, which flow straightener preferably extends over both cabin sections 16, 17 of each air supply cabin 5, 6 in the embodiment.
  • each flow straightener 18 serves to straighten the cooling air flow impinging on the filaments 1.
  • each flow straightener 18 preferably has a plurality of flow channels 19 oriented perpendicular to the filament flow direction FS. These flow channels 19 are each delimited by channel walls 20 and are preferably linear.
  • the open area of each flow straightener 18 is more than 90% of the total area of the flow straightener 18.
  • the ratio of the length L of the flow channels 19 to the smallest inner diameter D i of the flow channels 19 is in the range between 1 and 10, expediently in the range between 1 and 9.
  • each flow straightener 18 has a flow screen 21 both on its cooling air inflow side ES and on its cooling air outflow side AS.
  • the two flow screens 21 of each flow straightener 18 are arranged directly in front of or behind the flow straightener 18.
  • the two flow screens 21 of a flow straightener 18 or the surfaces of these flow screens 21 are oriented perpendicular to the longitudinal direction of the flow channels 19 of the flow straightener 18. It has been proven that a flow screen 21 has a mesh size w of 0.1 to 0.5 mm, preferably 0.1 to 0.4 mm and preferably 0.15 to 0.34 mm. Furthermore, it is advantageous if the flow screen has a wire thickness d of 0.05 to 0.35 mm, preferably 0.05 to 0.32 mm and preferably 0.07 to 0.28 mm. It is within the scope of the invention that the mesh size w of the flow screens 21 is significantly smaller than the smallest inner diameter D i of the flow channels 19 of the flow straightener 18.
  • the mesh size w of a flow screen 21 is preferably less than 1/6, very preferably less than 1 / 8 and particularly preferably less than 1/10 of the smallest inner diameter D i of the flow channels 19.
  • the open area of a flow screen 21 that is not occupied by wire is recommended to be 21 to 50% and preferably 25 to 45% of the total area of a flow screen 21.
  • the Figures 4 to 6 show typical cross sections of the flow channels 19 of a flow straightener 18 used according to the invention.
  • the flow channels 19 of a flow straightener 18 have a hexagonal or honeycomb-shaped cross section.
  • the smallest inner diameter D i is measured here between opposite sides of the hexagon (see Fig. Fig. 4 ).
  • the flow channels 19 of the flow straightener 18 have a circular cross section.
  • the Fig. 6 shows an embodiment of a flow straightener 18 according to the invention with airfoil-shaped channel walls 20.
  • airfoil-shaped channel walls 20 are expediently separated from one another in the exemplary embodiment by spacers 22, which spacers 22 also form channel walls of these flow channels.
  • the airfoil-shaped duct walls 20 are curved in cross section (see right side of FIG Fig. 6 ).
  • the airfoil-shaped duct walls 20 can also be designed in a straight line and in this case the flow straightener 18 is designed like a grating.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (15)

  1. Dispositif, destiné à fabriquer des filés-liés en filaments continus (1), notamment en filaments continus (1) en matière thermoplastique, une busette (2) étant prévue pour filer les filaments continus (1) et une chambre de refroidissement (4) étant présente pour refroidir les filaments (1) filés avec de l'air de refroidissement, sur deux côtés opposés de la chambre de refroidissement (4) étant placée respectivement une cabine d'apport d'air (5, 6) et à partir des cabines d'apport d'air (5, 6) opposées, de l'air de refroidissement pouvant être introduit dans la chambre de refroidissement (4),
    dans chacune des deux cabines d'apport d'air (5, 6) étant prévu respectivement au moins un redresseur de flux (18), destiné à redresser le flux d'air de refroidissement incident sur les filaments (1), un redresseur de flux (18) comportant une multiplicité de canaux d'écoulement (19) orientés à la transversale de la direction de déplacement des filaments (1) ou du flux de filaments, les canaux d'écoulement (19) étant délimités par des parois de canal (20),
    la surface ouverte d'un redresseur de flux (18) étant supérieure à 85 %, de préférence supérieure à 90 % et le rapport de la longueur L des canaux d'écoulement (19) au diamètre Di der canaux d'écoulement (19) L/Di, étant de 1 à 15, de préférence de 1 à 10 et de manière préférentielle, de 1,5 à 9.
  2. Dispositif selon la revendication 1, entre la busette (2) et la chambre de refroidissement (4) étant placé un système d'aspiration de monomère (7).
  3. Dispositif selon l'une quelconque des revendications 1 ou 2, chaque cabine d'apport d'air (5, 6) étant divisée en au moins deux, de préférence en deux parties de cabine (16, 17) à partir desquelles respectivement de l'air de refroidissement à différente température peut être alimenté.
  4. Dispositif selon l'une quelconque des revendications 1 à 3, au moins un redresseur de flux (18) comportant sur sa face d'affluence d'air de refroidissement ES et/ou sur sa face de distribution d'air de refroidissement AS au moins un tamis d'écoulement (21), le tamis d'écoulement (21) étant placé de préférence à la transversale, de manière préférentielle à la perpendiculaire de la direction longitudinale des canaux d'écoulement (19).
  5. Dispositif selon la revendication 4, l'au moins tamis d'écoulement (21) présentant un maillage de 0,1 à 0,4 mm, de préférence de 0,15 à 0,34 mm et l'au moins un tamis d'écoulement (21) présentant de préférence une épaisseur de fil métallique de 0,05 à 0,32 mm, de préférence de 0,07 à 0,28 mm.
  6. Dispositif selon l'une quelconque des revendications 4 ou 5, la surface ouverte de l'au moins un tamis d'écoulement (21) étant de 20 à 50 %, de préférence de 25 à 45 %.
  7. Dispositif selon l'une quelconque des revendications 1 à 6, la surface ouverte d'un redresseur de flux (18) étant supérieure à 91 %, de préférence supérieure à 92 %.
  8. Dispositif selon l'une quelconque des revendications 1 à 7, le rapport L/Di étant de 2 à 8, de préférence de 2,5 à 7,5, de manière préférentielle, de 2,5 à 7 et de manière très préférentielle, de 3 à 6,5.
  9. Dispositif selon l'une quelconque des revendications 1 à 8, les canaux d'écoulement (19) d'un redresseur de flux (18) présentant une section transversale polygonale, de préférence une section transversale de carrée à octogonale et de préférence une section transversale hexagonale.
  10. Dispositif selon l'une quelconque des revendications 1 à 9, les canaux d'écoulement (19) d'un redresseur de flux (18) présentant une section transversale ronde, de préférence une section transversale circulaire ou ovale.
  11. Dispositif selon l'une quelconque des revendications 1 à 8, les parois de canal (20) des canaux d'écoulement (19) étant conçues en forme d'ailettes ou en forme d'éléments de sustentation, et de préférence, l'écart entre deux parois de canal (20) 3 à 12 mm voisines en forme d'éléments de sustentation étant de préférence de 5 à 10 mm.
  12. Dispositif selon l'une quelconque des revendications 1 à 11, la surface intérieure d'un redresseur de flux (18) traversée par l'air de refroidissement étant de 5 à 50 m2, de préférence de 7,5 à 45 m2 et de manière préférentielle de 10 à 40 m2 par m2 de section transversale d'écoulement du redresseur de flux (18).
  13. Dispositif selon l'une quelconque des revendications 1 à 12, la longueur L des canaux d'écoulement (19) d'un redresseur de flux (18) étant de 15 à 65 mm, de préférence de 20 à 60 mm, de manière préférentielle, de 20 à 55 mm et de manière très préférentielle, de 25 à 50 mm.
  14. Dispositif selon l'une quelconque des revendications 1 à 13, le diamètre intérieur Di respectivement le plus petit diamètre intérieur Di des canaux d'écoulement (19) étant de 2 à 15 mm, de préférence de 3 à 12 mm, de manière préférentielle, de 4 à 11 mm et de manière très préférentielle, de 5 à 10 mm.
  15. Dispositif selon l'une quelconque des revendications 1 à 14, le dispositif étant conçu avec le critère que les filaments (1) circulent à une vitesse de fil supérieure à 2000 m/minute, de préférence supérieure à 2200 m/minute à travers le dispositif ou circulent à une vitesse de fil supérieure à 4000 m/minute, notamment supérieure à 5000 m/minute à travers le dispositif.
EP18174523.3A 2018-05-28 2018-05-28 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus Active EP3575470B1 (fr)

Priority Applications (23)

Application Number Priority Date Filing Date Title
DK18174523.3T DK3575470T3 (da) 2018-05-28 2018-05-28 Indretning til fremstilling af filterdug af endeløse filamenter
ES18174523T ES2841727T3 (es) 2018-05-28 2018-05-28 Dispositivo de fabricación de velos de hilatura a base de filamentos continuos
EP18174523.3A EP3575470B1 (fr) 2018-05-28 2018-05-28 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus
SI201830170T SI3575470T1 (sl) 2018-05-28 2018-05-28 Naprava za proizvodnjo tkanih polsti iz brezkončnih filamentov
JP2019081747A JP7168517B2 (ja) 2018-05-28 2019-04-23 無端のフィラメントから成る紡糸フリースを製造する装置
CA3041248A CA3041248C (fr) 2018-05-28 2019-04-25 Appareil de fabrication de non-tisses files-lies a partir de filaments continus
MYPI2019002375A MY193453A (en) 2018-05-28 2019-04-26 Apparatus for making spunbonded nonwovens from continuous filaments
AU2019202944A AU2019202944B2 (en) 2018-05-28 2019-04-26 Apparatus for making spunbonded nonwovens from continuous filaments
MX2019005374A MX2019005374A (es) 2018-05-28 2019-05-08 Aparato para la fabricacion de telas no tejidas unidas por hilado a partir de filamentos continuos.
ARP190101222A AR114883A1 (es) 2018-05-28 2019-05-08 Aparato para la fabricación de telas no tejidas unidas por hilado a partir de filamentos continuos
CONC2019/0004689A CO2019004689A1 (es) 2018-05-28 2019-05-08 Aparato para la fabricación de telas no tejidas unidas por hilado a partir de filamentos continuos
PE2019000936A PE20191854A1 (es) 2018-05-28 2019-05-08 Aparato para la fabricacion de telas no tejidas unidas por hilado a partir de filamentos continuos
TNP/2019/000154A TN2019000154A1 (en) 2018-05-28 2019-05-10 Apparatus for making spunbonded nonwovens from continuous filaments
KR1020190057387A KR102399905B1 (ko) 2018-05-28 2019-05-16 연속적인 필라멘트들로부터 스펀본드식 부직포를 제조하기 위한 장치
BR102019010160A BR102019010160A2 (pt) 2018-05-28 2019-05-17 aparelho para produção de não tecidos fabricados por fiação contínua a partir de filamentos contínuos
CL2019001363A CL2019001363A1 (es) 2018-05-28 2019-05-20 Aparato para la fabricación de telas no tejidas unidas por hilado a partir de filamentos continuos
IL266793A IL266793B (en) 2018-05-28 2019-05-21 A facility for making non-woven fabrics from continuous fibers
RU2019116345A RU2739285C2 (ru) 2018-05-28 2019-05-27 Устройство для изготовления фильерного нетканого материала из элементарных нитей
US16/423,048 US11001942B2 (en) 2018-05-28 2019-05-27 Apparatus for making spunbonded nonwoven from continuous filaments
UAA201905798A UA122948C2 (uk) 2018-05-28 2019-05-27 Пристрій для виготовлення фільєрного нетканого матеріалу з елементарних ниток
JOP/2019/0119A JOP20190119B1 (ar) 2018-05-28 2019-05-28 جهاز لإنتاج مادة منسوجة من خيوط متصلة
CN201910448326.3A CN110541242B (zh) 2018-05-28 2019-05-28 用于由连续长丝制造纺粘型非织造织物的设备
MA45970A MA45970B1 (fr) 2018-05-28 2019-05-28 Appareil pour la fabrication des non-tisses de type file-lie par des filaments continus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18174523.3A EP3575470B1 (fr) 2018-05-28 2018-05-28 Dispositif de fabrication d'un tissu non-tissé à partir de filaments continus

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EP3575470A1 EP3575470A1 (fr) 2019-12-04
EP3575470B1 true EP3575470B1 (fr) 2020-10-21

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US (1) US11001942B2 (fr)
EP (1) EP3575470B1 (fr)
JP (1) JP7168517B2 (fr)
KR (1) KR102399905B1 (fr)
CN (1) CN110541242B (fr)
AR (1) AR114883A1 (fr)
AU (1) AU2019202944B2 (fr)
BR (1) BR102019010160A2 (fr)
CA (1) CA3041248C (fr)
CL (1) CL2019001363A1 (fr)
CO (1) CO2019004689A1 (fr)
DK (1) DK3575470T3 (fr)
ES (1) ES2841727T3 (fr)
IL (1) IL266793B (fr)
JO (1) JOP20190119B1 (fr)
MA (1) MA45970B1 (fr)
MX (1) MX2019005374A (fr)
MY (1) MY193453A (fr)
PE (1) PE20191854A1 (fr)
RU (1) RU2739285C2 (fr)
SI (1) SI3575470T1 (fr)
TN (1) TN2019000154A1 (fr)
UA (1) UA122948C2 (fr)

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JP7168517B2 (ja) 2022-11-09
IL266793B (en) 2021-02-28
RU2019116345A3 (fr) 2020-11-27
DK3575470T3 (da) 2020-12-14
JOP20190119A1 (ar) 2019-11-28
IL266793A (en) 2019-08-29
MY193453A (en) 2022-10-13
MA45970A1 (fr) 2020-10-28
AU2019202944A1 (en) 2019-12-12
JOP20190119B1 (ar) 2021-08-17
CN110541242A (zh) 2019-12-06
MA45970B1 (fr) 2021-02-26
EP3575470A1 (fr) 2019-12-04
KR20190135409A (ko) 2019-12-06
CN110541242B (zh) 2022-12-02
PE20191854A1 (es) 2019-12-31
RU2739285C2 (ru) 2020-12-22
AR114883A1 (es) 2020-10-28
US11001942B2 (en) 2021-05-11
UA122948C2 (uk) 2021-01-20
ES2841727T3 (es) 2021-07-09
RU2019116345A (ru) 2020-11-27
TN2019000154A1 (en) 2020-10-05
CO2019004689A1 (es) 2020-05-15
CA3041248C (fr) 2022-11-29
SI3575470T1 (sl) 2021-01-29
CL2019001363A1 (es) 2019-07-19
CA3041248A1 (fr) 2019-11-28
BR102019010160A2 (pt) 2019-12-10
US20190360123A1 (en) 2019-11-28
AU2019202944B2 (en) 2024-03-28
KR102399905B1 (ko) 2022-05-18
JP2019206791A (ja) 2019-12-05
MX2019005374A (es) 2019-11-29

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