EP4141152A1 - Installation de production de tissu non-tissé - Google Patents

Installation de production de tissu non-tissé Download PDF

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Publication number
EP4141152A1
EP4141152A1 EP22189356.3A EP22189356A EP4141152A1 EP 4141152 A1 EP4141152 A1 EP 4141152A1 EP 22189356 A EP22189356 A EP 22189356A EP 4141152 A1 EP4141152 A1 EP 4141152A1
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EP
European Patent Office
Prior art keywords
flow rate
air flow
woven fabric
grid
main channel
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.)
Pending
Application number
EP22189356.3A
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German (de)
English (en)
Inventor
Graziano RAMINA
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.)
Ramina SRL
Original Assignee
Ramina SRL
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 Ramina SRL filed Critical Ramina SRL
Publication of EP4141152A1 publication Critical patent/EP4141152A1/fr
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)

Definitions

  • the present invention relates to a non-woven fabric production plant, in particular in plastic material, according to the preamble of independent claim number 1.
  • the non-woven fabric production plant in question is intended to be advantageously employed in the production fibre tapes field to form a non-woven fabric, normally in the form of tapes.
  • Such tapes are normally used for the production of sanitary products, such as headgear, masks and gloves, or in the agricultural sector for the production of non-woven fabric to be laid on the soil to be cultivated, to prevent weed growth and/or to protect seeds.
  • the non-woven fabric production plant covered by the present invention is advantageously employable to produce a continuous tape of semi-finished non-woven fabric, which is intended to undergo subsequent processing to obtain a finished product.
  • the invention therefore relates the industrial field of non-woven fibre tape material production, or more generally, into the field of non-woven fabric production.
  • non-woven fabric is a semi-finished product intended to undergo subsequent processing steps to produce various kinds of products, normally made of plastic material and in the form of tapes or overlapping tapes.
  • tapes are made up of filaments arranged randomly in layers and joined usually mechanically, or by adhesives, or at least partially fused together by heat.
  • non-woven fabric is the term well known in the technical field to indicate an industrial product similar to a fabric but obtained by processes other than weaving and/or knitting. More specifically, in a non-woven fabric, the filaments composing it are mechanically bound together in a random pattern, without defining any ordered structure, unlike the filaments and/or fibres composing a fabric.
  • non-wovens are known to be produced, for example, in which the filaments and/or fibres are arranged in layers or criss-crossed and mechanically joined together, e.g. by needle punching or using adhesives or similar.
  • non-woven fabric is also referred by the term 'nonwoven', which is also well known to the skilled person in the art.
  • non-woven plants have long been known which normally involve the formation of a plurality of plastic filaments, which are stretched, laid on a conveyor belt and then pressed one on top of the other in a random manner, to form the aforementioned non-woven tapes.
  • an extrusion station for extruding a plurality of filaments of high temperature plastic material, which are fed into the main channel through an upper inlet opening, at which there is an extrusion head from which the filaments exit inferiorly.
  • this extrusion head is equipped at the bottom with a plurality of holes facing the upper inlet opening from which a mass of molten plastic material in the form of filaments exits.
  • the filaments are normally extruded in the form of a pasty plastic material at a high temperature, normally between 150°C and 280°C.
  • a cooling station (normally known as 'quenching' or 'quench' in the technical term of the field), wherein an air flow rate is forced into the main channel by means of at least a fan placed outside the latter.
  • the air flow rate fed into the cooling station cools the filaments formed at the extrusion station's extrusion head.
  • the cooling station comprises side walls, usually metallic, which define a cooling volume within which the high-temperature filaments begin to cool.
  • the system In order to stretch the filaments obtained from the extrusion station and subsequently cooled by the cooling station, the system normally comprise a rectification station, in which the air injected into the first feed section stretches the plastic filaments within a reduced section of the main channel until they reach the desired size, i.e. until they reach a linear density of approximately 1 - 5 dtex.
  • the plant of the known type is equipped with a deposition station at an end section of the main channel, which terminates at the bottom with an outlet opening opposite the inlet opening.
  • the air flowing within the end section of the main channel is moved in such a way as to give it a turbulent motion.
  • the filaments are propelled by the air and intertwine with each other in an essentially random manner to form the desired weave of the nonwoven fabric.
  • the end section of the main channel extends downwards, and in particular towards the outlet opening, comprises a diffuser with a substantially truncated cone shape.
  • the plant of the known type comprises a conveyor belt below the deposition station, with which the end section of the main channel for receiving filaments ends.
  • the conveyor belt is moved to run along a substantially horizontal direction of movement the filaments thus laid to form the non-woven tape.
  • the non-woven tape thus obtained undergoes further processing steps such as pressing and is then moved to a winding station where the tape is wound around a support core to form reels of non-woven fabric, allowing it to be quickly stored and transported.
  • Homogenising means housed within an air expansion chamber, which remains defined within the cooling station, are known from plants currently on the market.
  • Such known homogenising means comprise perforated metal plates, which extend parallel to the vertical axis of the plant.
  • perforated metal plates housed in the expansion chamber of the cooling station used to homogenise the cooling air flow rate are described in document EP 3575469 .
  • the perforated metal plates described therein are provided with a plurality of through holes, which are made transverse to the vertical axis. These through holes allow the cooling air flow rate to decrease in velocity before reaching the cooling chamber of the main channel.
  • the main drawback lies in the fact that the perforated metal plates of known homogenising means do not allow for optimal air homogenisation. In fact, the provision of holes and/or openings transverse to the vertical axis actually fragment the air flow rate into a plurality of parallel flows.
  • a further drawback of the known type of plant lies in the fact that the perforated metal plates of the homogenising means, in order to give a satisfactory result, must be provided with numerous holes and/or openings, in particular up to 40% empty over full. This makes the plates mechanically weak and/or very flexible and brittle.
  • the purpose of the present invention is to propose a non-woven fabric production plant that overcomes, at least in part, the drawbacks of the above-mentioned background art.
  • a further purpose of the invention is to provide a non-woven fabric production plant that allows filaments to be cooled within the main channel optimally.
  • a further purpose of the invention is to provide a non-woven fabric production plant that enables the generation of a cooling air flow rate that is homogeneous across the entire extent of the main channel cooling chamber.
  • a further purpose of the invention is to provide a non-woven fabric production plant that is structurally completely reliable.
  • a further purpose of the invention is to provide a non-woven fabric production plant that is functionally completely reliable.
  • a further purpose of the present invention is to provide a non-woven fabric production plant that is simple and/or economical to manufacture.
  • a further purpose of the present invention is to provide a cost-effective non-woven fabric production plant.
  • a further purpose of the present invention is to provide a non-woven fabric production plant that is industrially feasible.
  • a further purpose of the present invention is to provide a non-woven fabric production plant that is an alternative and/or an improvement on traditional solutions.
  • Another purpose of the present invention is to provide a non-woven fabric production plant that has an alternative and/or improved layout, both in terms of construction and function, compared to traditional solutions.
  • non-woven fabric production plant according to the present invention has been designated as number 1.
  • the plant according to the invention is intended to be advantageously used for the production of non-woven fabrics of different types and materials, such as in particular spunbond made of plastic material, e.g. polypropylene and/or polyethylene, and in particular polyethylene terephthalate (PET in the technical jargon of the industry).
  • plastic material e.g. polypropylene and/or polyethylene
  • PET polyethylene terephthalate
  • plant 1 for the production of non-woven fabric of plastic material, in accordance with the preferred embodiment illustrated in the attached figures.
  • the plant 1 of the present invention may also be advantageously employed to produce non-woven fabrics of other nature, which are in themselves well known to the person skilled in the art and therefore not described in detail below.
  • Non-woven fabric is the generic term used in the technical field to indicate an industrial product similar to a fabric, but obtained by processes other than weaving (which involve the crossing of warp and weft threads on a loom) and knitting.
  • the fibres and/or filaments present a random pattern, without the identification of any orderly structure, typically filaments and/or fibres are arranged in layers or criss-crossed, which are mechanically joined together (e.g. with needles, by needle-punching), or with adhesives or by thermal processes.
  • the term is also referred as 'nonwoven'.
  • non-woven fabric is normally composed of a plurality of plastic filaments mechanically joined together, e.g. by pressing.
  • the non-woven fabric production plant comprises a support structure provided with a main channel 3, which extends along a vertical axis Y from an upper inlet 4 to a lower outlet 5.
  • the support structure is intended to rest on the ground and is preferably made of metal material, such as steel and in particular stainless steel (inox), such as AISI 304 or AISI 431 steel.
  • inox stainless steel
  • main channel 3 extends vertically along the aforementioned vertical Y-axis.
  • main channel 3 may be delimited by a substantially tubular body defined, in accordance with the preferred embodiment illustrated in the attached figures, by a plurality of substantially tubular sections vertically aligned with each other along the vertical Y-axis and susceptible to be crossed by filaments (as described in detail below) for their treatment.
  • the plant 1 comprises a feeding station 6 located above main channel 3 and in communication with upper inlet 4 to feed non-woven forming filaments into main channel 3.
  • the feeding station 6 comprises means for forming molten plastic material placed in fluid connection with the upper inlet 4 of the main channel 3 and comprising an extruder (in itself well known to the person skilled in the art and therefore not described in detail below) preferably supported by the support structure, capable of forming a continuous flow of molten plastic material and an extrusion head 29 mechanically supported by the support structure, placed in fluid connection with the extruder and provided with an extrusion plate facing the upper inlet 4 of the main channel 3.
  • an extruder in itself well known to the person skilled in the art and therefore not described in detail below
  • the extrusion plate of the extrusion head 29 of the feeding station 6 is advantageously equipped with a plurality of through holes, which can be passed through by the flow of molten plastic material to form filaments.
  • the filaments thus formed pass through upper inlet 4 and enter main channel 3 to allow them to be processed through a plurality of operating stations, as described in detail below.
  • the plant 1 object of the present invention comprises a fume expulsion station provided below the feeding station 6, to expel from the main channel 3 any fumes produced during the extrusion of the plastic material from the extrusion head 29 through a chimney (not illustrated), which connects the main channel 3 of the plant 1 with the external environment.
  • the fume expulsion station comprises at least an expulsion channel placed to intercept the main channel 3, in particular fluidically communicating with the extrusion plate of the extrusion head 29, to convey the fumes produced by the latter to the aforementioned chimney.
  • the expulsion channel is designed to convey the fumes and vapours produced by the molten plastic material, extruded in filaments from the extrusion head, which could adhere to the inner walls of the main channel 3, forming fouling.
  • the fume expulsion station also comprises a water-to-air type heat exchanger to cool the fumes and vapours coming from the extrusion head 29 of the feeding station 6 and to collect any condensate fluid formed as a result of this cooling.
  • a water-to-air type heat exchanger to cool the fumes and vapours coming from the extrusion head 29 of the feeding station 6 and to collect any condensate fluid formed as a result of this cooling.
  • plant 1 comprise a cooling station 8, which is located along the aforementioned main channel 3 below the feeding station 6.
  • the cooling station 8 comprises a containment body 11 extending along the vertical axis Y between an upper end 19 and a lower end 20 and extends around the vertical axis Y delimiting a cooling chamber 12 within the main channel 3.
  • the cooling chamber 12 preferably corresponds to a first section of the main channel 3.
  • the cooling station 8 comprises two containment bodies 11 opposing each other with respect to the vertical axis Y, in accordance with the attached figure 1 . Therefore, all the features described below with reference to a containment body 11 of the cooling station 8 are to be understood as being described for both containment bodies 11 of the preferred embodiment.
  • the cooling station 8 also comprises cooling means in fluidically connected with the cooling chamber 12 capable of supplying the cooling chamber 12 with a first air flow rate 10 to cool the filaments likely to pass through the cooling chamber 12.
  • the cooling station 8 is equipped with at least a first outlet opening 9 which connects the cooling chamber 12 of the main channel and the expansion chamber 7 defined by the containment body 11.
  • the first outlet opening 9 is provided at an internal wall 21 of the containment body 11 which delimits the main channel 3 and in particular at least partially defines the cooling chamber 12.
  • the first outlet opening 9 is advantageously realised by means of a plurality of through holes cut in the internal wall 21, at the first section of the main channel 3.
  • the internal wall 21 of the containment body 11 can be realised by means of a grid, or a honeycomb wall, whose substantially honeycombed openings define the aforementioned first outlet opening 9.
  • the cooling station 8 comprises ventilation means (not shown) fluidically connected with the first outlet opening 9 to feed the first air flow rate 10 into the cooling chamber 12, in particular through the expansion chamber 7 defined by the containment body 11.
  • the ventilation means comprise a rotary fan, the type of which is in itself well known to the skilled person in the art and therefore not described in detail below.
  • This fan is configured to generate the first air flow rate 10 and feed it into the cooling chamber 12 through the first outlet opening 9.
  • the ventilation means preferably comprise a heat exchanger interposed between the fan and the first outlet opening 9. More in detail, the heat exchanger is placed to intercept the first air flow rate 10 generated by the fan and is designed to vary the temperature and humidity of the first air flow rate 10 itself.
  • the heat exchanger is a water to air heat exchanger type, in particular a water to air shell and tube heat exchanger type.
  • the heat exchanger is capable of bringing the first air flow rate 10 to a constant temperature between 20°C and 30°C and in particular between 22°C and 25°C.
  • the heat exchanger is mechanically supported by the support structure of the plant 1 in a raised position and substantially aligned with the first outlet opening 9 of the containment body 11.
  • the cooling station 8 comprises said a containment body 11 extending along said vertical axis Y between an upper end 19 and a lower end 20, and extends around said vertical axis Y delimiting at least said cooling chamber 12 within said main channel 3 and defining internally at least an expansion chamber 7.
  • containment body 11 extends between an inlet opening 17 (visible on the right in the attached Figures 2 , 3 ) and an outlet opening 9 (visible on the left in the attached Figures 2 , 3 ).
  • the plant 1 comprises cooling means in fluidically connected with said expansion chamber 7 and with said cooling chamber 12 and capable of introducing into said cooling chamber 12 at least a first air flow rate 10 for cooling filaments susceptible to pass through said cooling chamber 12.
  • the expansion chamber 7 is configured to receive the first air flow rate 10 generated by the cooling means and allow it to expand, in order to slow down its speed for more homogeneous filament cooling.
  • the plant 1 comprises homogenising means 13 housed within said expansion chamber 7 and configured to intercept said first air flow rate 10 and generate a second substantially homogenous air flow rate 14, preferably at least parallel to said vertical axis Y.
  • the second air flow rate 14 is intended to be substantially vertically homogeneous, i.e. it has substantially the same features (e.g. velocity and/or pressure and/or temperature) along the entire height of the outlet opening 9 of the expansion chamber 7.
  • said homogenising means 13 comprise at least one grid 15 having at least one plurality of wires 16 defining between them a plurality of crossing paths for said first air flow rate 10 to generate said second homogenous air flow rate 14.
  • the plant 1 allows to homogenise the first air flow rate 10 into a second homogenous air flow rate 14 due to the presence of the aforementioned crossing paths defined between the wires 16 of the at least one grid 15 of homogenisation means.
  • the plurality of crossing paths forces the first air flow rate 10 to slow down, pass through the grid 15 with an equal velocity at each point along the internal extension of the grid 15, generating at the outlet of the homogenising means 13 the aforementioned second homogenised air flow rate 14, which is substantially the same throughout the entire extension of the grid 15, at the same pressure and/or velocity.
  • the first air flow rate 10 in passing through the homogenising means 13, is forced to pass through pathways that perform the function similar to channels.
  • channels are realised, along a cross direction to the axis Y, by preferably juxtaposing a plurality of grids 15 parallel to each other in such a way as to create a plurality of paths, created between the interstices of a weft wire and a warp wire or vice versa (as described in detail below), which preferably extend substantially parallel to each other and to the axis Y and which cover at least partially the transversal length (i.e. parallel to the axis Y) of the expansion chamber 7.
  • the grids 15 arranged as just described essentially create a kind of 'diffuser' for the first air flow rate 10, resulting in homogeneity.
  • the term 'homogeneous air flow rate' must be understood to mean an air flow rate that has essentially the same pressure and preferably the same velocity over the entire cross-sectional area of the channel that passes through, in the case at hand, the expansion chamber 7 of the containment body.
  • said grid 15 of said homogenising means 13 comprises at least a first plurality of wires 16, extending parallel to each other and parallel to said vertical axis Y, and at least a second plurality of wires 16', woven transversely with said first plurality of wires 16.
  • the first plurality of wires 16' is made of metallic material, such as iron or steel.
  • the second plurality of wires 16' is made of metallic material, such as iron or steel.
  • the first and second plurality of wires are woven together according to a weaving method, wherein the first plurality of wires defines the weft and the second plurality of wires defines the warp of the grid 15.
  • said first plurality of wires 16 and said second plurality of wires 16' of said grid 15 of said homogenising means 13 define said plurality of crossing paths for said first air flow rate 10 among themselves.
  • the grid 15 of homogenising means 13 does not define openings for the passage of the first air flow rate 10.
  • openings are to be understood as through openings, having an axis of horizontal extension (or in any case cross with respect to the Y axis), e.g. circular through holes made on a plate of a known type.
  • crossing paths defined by grid 15 comprise passage labyrinths, and/or passing lights, inclined to each other and to a horizontal axis X and crossed to the vertical axis Y.
  • each crossing path of said plurality of crossing paths extends inclined with respect to a horizontal axis X.
  • said containment body 11 extends between an inlet opening 17 and an outlet opening 9 for said first air flow rate 10.
  • said homogenising means 13 comprise two or more of said grids 15 arranged parallel to the vertical axis Y between said inlet opening 17 and said outlet opening 9, wherein at least one grid proximal to said inlet opening 17 and at least one grid proximal to said outlet opening 9.
  • the homogenisation means comprise at least four grids 15 parallel to each other and preferably comprise seven grids 15 parallel to each other housed within the expansion chamber 7 of the containment body 11.
  • said grids 15 proximal to said inlet opening 17 comprises said plurality of wires 16 each having a first diameter; said grids 15 proximal to said outlet opening 9 comprises said plurality of wires 16 each having a second diameter smaller than said first diameter.
  • the diameter of the wires 16, 16' that make up the grids 15 preferably decreases as the grid placed closer to the outlet opening 9.
  • said grid 15 proximal to said inlet opening 17 defines fewer crossing paths for said first air flow rate 10 than the number of crossing paths defined by said grid 15 proximal to said outlet opening 9.
  • the larger diameter 16, 16' wires define fewer crossing paths than the number of crossing paths defined by the smaller diameter 16, 16' wires.
  • the cooling station 8 of the plant 1 comprises at least one partition wall 18 extending in overhang from said inlet opening 17, defining a first expansion zone 7' provided with a first extension D1 defined between said upper end 19 and said partition wall 18 and a second expansion zone 7" provided with a second extension D2 between said partition wall 18 and said lower end 20 other than said first extension D1.
  • the ratio between said first extension D1 of said first expansion zone 7' and said second extension D2 of said second expansion zone 7' is between 0,4 and 0,7 and preferably between 0,5 and 0,6 and even more preferably around 0,56-0,57.
  • the first extension D1 of the first expansion zone 7' is about 0,2 to 0,5 of the total extension of the expansion chamber 7 between the upper end 19 and the lower end 20 of the containment body, and preferably about 0,4 of the total extension and even more preferably about 0,37 to 3,38.
  • the attached figures 8 - 10 show different embodiments of the grid 15 of the homogenising means 13 according to the present invention.
  • these different embodiments show different types of weaving of the first plurality of wires 16 and the second plurality of wires 16'.
  • Figure 8 shows a touraille type weaving
  • Figure 9 shows a panzertresse type weaving
  • Figure 10 shows a cross panzertresse type weaving.
  • said partition wall 18 extends between a first end 18' extending from said inlet opening 17, a second end 18' placed at the division of at least one of said grids 15.
  • the partition wall 18 divides at least one grid 15 of the homogenising means 13 crosswise.
  • the homogenising means 13 comprise five to ten grids 15 and appropriately the partition wall 18 divides at least two to five grids 15 crosswise.
  • the partition wall 18 divides at least five of the seven grids 15 of the homogenising media 13 crosswise.
  • the partition wall 18 is made of a metal sheet.
  • the metal sheet of the partition wall 18 is provided with a substantially Z-bent cross-section.
  • each grid 15 of the homogenising means 13 may comprise more than one sheet of woven wires 16, 16' between them.
  • the sheets are side-by-side and mechanically fastened together to form said grid 15.
  • each grid 15 comprises at least two and preferably at least three sheets of woven wires 16, 16'.
  • the cooling station 8 comprises a barrier element 25 housed within the expansion chamber 7 of the containment body 11.
  • the barrier element 25 is interposed between the inlet opening 17 and the homogenising means 13 and is advantageously configured to intercept the first air flow rate 10 entering from the inlet opening 17 and preferably lower its velocity before it reaches the at least one grid 15.
  • the barrier element 25 defines at least one passage gap 26 for the passage of the first air flow rate 10.
  • the barrier element 25 defines two passage gaps 26, a first passage gap with the upper end 19 of the containment body 11 and a second passage gap with the lower end 20 of the same containment body 11.
  • the barrier element 25 is substantially tile-shaped and extends parallel to the vertical axis Y within the expansion chamber 7 of the cooling station 8.
  • the plant 1 object of the present invention comprises a stretching station 27 provided with a stretching channel 28 extending along said vertical axis Y mechanically associated with a lower edge of the containment body 11.
  • the plant 1 which is the subject matter of the present invention further comprises a deposition station 30 located inferiorly to the stretching station 27, along the main channel 3 and terminating with the filament lower outlet 5.
  • the deposition station 30 suitably comprises a diffuser 31.
  • the diffuser 31 of the deposition station 42 extends by enlarging from the stretching station 27, terminating with the filament lower outlet 5 for depositing filaments onto a conveyor belt 32.
  • the filaments passing through the diffuser 31 of the deposition station 30 tend to intertwine with each other and are therefore deposited on the conveyor belt 32 in the form of a non-woven tape.
  • non-woven fabric production plant is particularly advantageous because:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)
EP22189356.3A 2021-08-23 2022-08-08 Installation de production de tissu non-tissé Pending EP4141152A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102021000022190A IT202100022190A1 (it) 2021-08-23 2021-08-23 Impianto per la produzione di tessuto non tessuto

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EP4141152A1 true EP4141152A1 (fr) 2023-03-01

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EP22189356.3A Pending EP4141152A1 (fr) 2021-08-23 2022-08-08 Installation de production de tissu non-tissé

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EP (1) EP4141152A1 (fr)
IT (1) IT202100022190A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206308453U (zh) 2016-10-31 2017-07-07 恒天嘉华非织造有限公司 一种纺粘侧吹风冷却装置
CN207468781U (zh) 2017-11-10 2018-06-08 东阳市奥隆机械设备有限公司 一种新型纺粘生产线冷却装置
EP3575469A1 (fr) 2018-05-28 2019-12-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Procédé et dispositif destinés à la fabrication de tissus non-tissés à partir de filaments continus
CN211734550U (zh) 2020-02-24 2020-10-23 宏大研究院有限公司 纺粘非织造布细旦高速纺丝新型侧吹风装置
EP3831989A1 (fr) 2019-12-06 2021-06-09 Ramina S.R.L. Installation de production de nontissés

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN206308453U (zh) 2016-10-31 2017-07-07 恒天嘉华非织造有限公司 一种纺粘侧吹风冷却装置
CN207468781U (zh) 2017-11-10 2018-06-08 东阳市奥隆机械设备有限公司 一种新型纺粘生产线冷却装置
EP3575469A1 (fr) 2018-05-28 2019-12-04 Reifenhäuser GmbH & Co. KG Maschinenfabrik Procédé et dispositif destinés à la fabrication de tissus non-tissés à partir de filaments continus
EP3831989A1 (fr) 2019-12-06 2021-06-09 Ramina S.R.L. Installation de production de nontissés
CN211734550U (zh) 2020-02-24 2020-10-23 宏大研究院有限公司 纺粘非织造布细旦高速纺丝新型侧吹风装置

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