EP2377978A1 - Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen - Google Patents

Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen Download PDF

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Publication number
EP2377978A1
EP2377978A1 EP10160270A EP10160270A EP2377978A1 EP 2377978 A1 EP2377978 A1 EP 2377978A1 EP 10160270 A EP10160270 A EP 10160270A EP 10160270 A EP10160270 A EP 10160270A EP 2377978 A1 EP2377978 A1 EP 2377978A1
Authority
EP
European Patent Office
Prior art keywords
passageway
fiber strand
divergent zone
spreader assembly
fiber
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.)
Withdrawn
Application number
EP10160270A
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English (en)
French (fr)
Inventor
Sanjay P. Kashikar
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.)
3B Fibreglass SRL
Original Assignee
3B Fibreglass 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 3B Fibreglass SRL filed Critical 3B Fibreglass SRL
Priority to EP10160270A priority Critical patent/EP2377978A1/de
Priority to US13/641,945 priority patent/US20130193623A1/en
Priority to KR1020127030248A priority patent/KR20130094199A/ko
Priority to EP11716399A priority patent/EP2560809A1/de
Priority to KR20127027431A priority patent/KR20130081641A/ko
Priority to PCT/EP2011/056228 priority patent/WO2011131664A1/en
Priority to US13/641,932 priority patent/US20130113133A1/en
Priority to PCT/EP2011/056236 priority patent/WO2011131670A1/en
Priority to EP11716507A priority patent/EP2561124A1/de
Publication of EP2377978A1 publication Critical patent/EP2377978A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D11/00—Other features of manufacture
    • D01D11/02—Opening bundles to space the threads or filaments from one another
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H51/00—Forwarding filamentary material
    • B65H51/005—Separating a bundle of forwarding filamentary materials into a plurality of groups
    • 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
    • D02J1/18—Separating or spreading

Definitions

  • the present invention relates to an improved process and apparatus for opening and spreading a strand or bundle of fibers into smaller strands or individual filaments for various subsequent treatments and processes using a fluid stream, such as compressed air.
  • the invention is particularly well suited for, but not limited to, various glass fiber applications, including the production of continuous reinforced polymer structure, more particularly.
  • fibers are sold as a "roving" in which a plurality of such fibers are collected, compacted, compressed or bound together, by methods known to those skilled in the art in order to maximize the content of roving or to facilitate the manufacturing, handling, transportation, storage and further processing thereof.
  • U.S. Pat. No. 4,799,985 describes a gas banding jet for spreading fiber tows.
  • the banding jet consist of a gas box into which compressed air or another gas is fed through an adjustable gas metering means.
  • One, or more than one, gas exit ports are provided to cause gas from within the gas box to impinge in a generally perpendicular fashion upon the fiber tow that passed across the exit ports.
  • a flow channel of the banding jet has a rectilinear shape whose entrance and exit ends have same width, the tow requires to be squeezed and opened by a Godet roll under controlled tension prior to being subjected to the compressed air in order to obtain fibers well spread widthwise without wasting the compressed air.
  • the whole system requires Godet rolls for controlling the tension to ensure an effective operation.
  • U.S. Pat. No. 6,032,342 describes a process and apparatus for spreading plural filaments combined together in such a manner that they are orderly disposed in parallel to each other.
  • the multifilament bundle in a flexibly bent condition is subjected to suction air flowing crosswise with regard to the moving direction of the multi-filament bundles.
  • a feeder such as rolls, for squeezing the fiber bundle so as to disengage softly the filament stuck together by a sizing agent by tensile force provided with the feeder.
  • the system requires a feeding control to work effectively.
  • the speed of the process can be hindered or limited due to suction part of the process.
  • the system requires a structure letting suction air go through between the individual filaments perpendicularly and letting the filaments bend in the direction of the suction air flow.
  • rollers or bars on surface thereof to spread the fiber bundle into individual fibers in a flat shape without breakage of fibers permit production only at reduced processing rates. Accordingly, using rolls or bars to separate fiber bundle has limitations, and is not well suited for delicate fibers, particularly when operating at relatively high speeds.
  • U.S. Pat. No. 3,873,389 describes a process and apparatus for pneumatically spreading thin graphite or other carbon filaments from a tow bundle to form a sheet or tape in which the filaments are maintained parallel.
  • the process includes a step of passing the tow through a slot venturi of preblower in which the tow is pulled through the preblower having a venturi in a direction along the primary air flow and subjected to the air flowing in parallel with the moving of the fibers.
  • preblower requires for each unit at least a pair of plenum spaces which lie outwardly of and are partially defined by confronting plates.
  • the stuck array of the single modules becomes much larger-in scale and more complicated in structure.
  • the air stream is applied to the filaments initially along the direction of filament movement but not perpendicularly thereto.
  • the present invention proposes a frictionless solution to spread the fiber strand at higher speeds with a newly designed and simple apparatus.
  • the subject matter or the present invention is a spreader assembly suitable for opening and spreading a fiber strand into smaller strands or into individual filaments comprising (a) at least one passageway having an inlet opening for receiving said fiber strand and having an outlet opening through which said fiber strand exits said passageway, (b) a divergent zone within the passageway having an entrance end and an exit end wherein the area of said exit end is larger than the one of the entrance end and the divergent zone has a flat cross-section, preferably rectangular cross-section, and (c) at least one through hole connected to the passageway at an angle preferably substantially perpendicular with respect to the longitudinal direction of the passageway, and suitable for introducing the air flow thereto.
  • the passageway for fibers of the spreader comprises an inner channel of rectilinear shape disposed between the inlet opening of the passageway and the exit end of the divergent zone.
  • the through hole of the spreader assembly is connected to the inner channel at an outlet having one or more holes smaller than the dimension of the through hole.
  • the through hole of the spreader assembly is located at a point immediately upstream from the entrance end of the divergent zone.
  • the divergent zone of the spreader assembly has a top wall, a bottom wall and sidewalls, wherein the sidewalls diverge outwardly at an angle greater than 0° and less than 90°, preferably between 5° and 85°, more preferably between 10° to 40°.
  • the subject matter of the present invention is also a method of spreading a fiber strand comprising the steps of (a) supplying the fiber strand from source of fiber strands, (b) pulling said fiber strand through a passageway having a divergent zone, and (c) subjecting said fiber strand to air flow at an angle, preferably substantially perpendicular, with respect to the moving direction of the filaments within said passageway.
  • the filaments supplied the step (a) are coated by a sizing or binding agent.
  • the filaments is subjected to the air flow entering into a passage through at least one hole, the passageway having an inlet opening for receiving said fiber strand, an outlet opening through which the fiber strand exits said passageway and a divergent zone having an entrance end and an exit end, wherein the area of said exit end is larger than the one of the entrance end.
  • step (c) is carried out within a inner channel having a rectilinear shape which is disposed between the inlet opening of the passage and the entrance end of the divergent zone, preferably at a point immediately upstream from the entrance end of the divergent zone.
  • the present invention overcomes several of the problems experienced with the prior art means for opening and spreading a fiber strand (for example, a collection of hundreds or more of individual, small-diameter fibers gathered together to form a generally flat tape-like flexible bundle) into smaller strands or individual filaments and spreading the filaments widely.
  • a fiber strand for example, a collection of hundreds or more of individual, small-diameter fibers gathered together to form a generally flat tape-like flexible bundle
  • the aim of the present invention is to provide a method and apparatus for efficiently separating a fiber strand into smaller strands or individual filaments and spreading the smaller strands or the filaments so as to be aligned widthwise in parallel and distributed in a uniformed density.
  • the problems of the prior art include slow operation speeds.
  • the present invention overcomes these problems by feeding a fiber strand to be spread through a specially designed spreader assembly.
  • the general design of the spreader assembly avoids mechanical frictions and allows for operating at high speed without the breakage of fibers.
  • fiber as used herein means a filament or a fiber of any material, for example, inorganic, metallic, ceramic, polymeric, or refractory materials such as, but not limited to, carbon, graphite, glass, quartz, polyethylene, poly(paraphenylene terephthalamide), benzoxazole, cellulosic derivatives, silicon carbide, and boron nitride.
  • the present invention is particularly suited to, but not limited to, glass fiber application with diameter ranging from, but not limited to, 6 ⁇ m to 32 ⁇ m for a given tex (g/km) strand.
  • strand means a plurality of individual fibers ranging from dozens to thousands in number, collected, compacted, compressed or bound together by means known to the skilled person in order to maximize the content thereof or to facilitate the manufacturing, handling, transportation, storage or further processing thereof.
  • a bundle of fibers used in accordance with the invention preferably has an oblong cross-section, more preferably, a rectangular cross-section.
  • Fiber strands used in practicing the invention are generally twist free strands.
  • a sizing or binding agent may have been applied to each fiber or some fibers in a strand to be spread so as to facilitate the manufacturing, handling, transportation, storage or further processing thereof, and a use of such fibers is included within the scope of the invention.
  • Such sizing or binding agent may have been applied in an amount more than or equal to 0.01%, preferably from 0.01 % to 10 %, more preferably from 0.2 % to 1.00 % by weight of the fiber strand.
  • rectangular and substantially rectangular as used herein, are to be understood as meaning a structure having a generally rectangular cross-section with possible slight defects, for example, rounded corners, and a slight bowing or indentation along side.
  • a spreader assembly includes at least one spreader unit. Preferably one strand is passed through one spreader unit, but more than one strands to be opened into individual filaments may be passed through one spreader unit.
  • the spreader assembly may include two or more spreader units oriented vertically in order to provide enough amounts of spread smaller strands or individual filaments required for subsequent processing.
  • a suitable configuration of plural spreader units enables to control the amount of fibers required or to adjust the width of the spread fibers as desired as per the process and application requirement.
  • FIGs. 1 to 9 illustrate a preferred embodiment of a spreader assembly 2 according to the present invention.
  • the spreader assembly 2 is provided with a cover 25 and a base 26 to be joined together so that a passageway 21 for the fibers is provided as illustrated in FIG.9 .
  • the spreader assembly comprises two side surfaces 201, a back surface 202, a front surface 203, a top surface 204 and a bottom surface 205 as illustrated in FIG. 5a .
  • the cover 25 is a rectangular plate having a certain thickness and comprises a through hole 242 passing through all thickness of the cover 25 as best shown in FIG.6 .
  • the through hole 242 corresponds to a passage for air as shown in details in FIG.25 .
  • One of the end of the through hole 242 corresponds to a air inlet 241 as shown in FIG 4 , whish is disposed on the top surface 204 of the cover 25.
  • the opposite end of the through hole 242 corresponds to an air outlet 24 having three small holes as shown FIGs.6 and 8 .
  • the bottom surface of the cover 25 forms a top wall for the passageway 21 ( FIGs 1, 2, 3 , 6 and 9 ).
  • the base 26 is a rectangular plate having a certain thickness and comprises a groove 21 in longitudinal direction, which corresponds to the passageway 21 for the fibers.
  • the groove 21 comprises a rectilinear zone 22 and a divergent zone 23.
  • the rectilinear zone 22 has constant width and depth from the one side of the base 26 to the point 231, which is the inter connection of the rectilinear zone 22 and the divergent zone 23 as shown FIGS. 6, 7 and 9 .
  • the divergent zone 23 has preferably a constant depth but may be varied over its length in order to get the best spread for the fibers.
  • the zone 23 comprises sidewalls 234, which diverge outwardly at an angle ⁇ ° from the point 231 to an exit end 232 on the back surfaces of the base 26 as shown FIGS. 6, 7 and 9 .
  • the cover 25 and the base 26 are joined together by convenient joining means, such as screws or clamps (not shown).
  • the groove 21 of the base 26 and the bottom surface of the cover 25 form a passageway 21 for filaments as shown in FIGS. 6 , 8 and 9 .
  • the passageway 21 has an inlet opening 211, an outlet opening 232, a divergent zone 23 provided by the divergent zone 23 of the base 26 and the cover 25, and an inner channel 22 provided by the rectilinear zone 22 of the base 26 and the cover 25.
  • the air outlet 24 is preferably positioned so as to be within the inner channel 22 and immediately upstream from the divergent zone 23 so that the compressed air, applied to the fiber strand, breaks up links between the individual filaments without wasting the air.
  • the air outlet 24 may be adjacent to the entrance end 231 of the divergent zone 23.
  • the small holes disposed in the air outlet 24 may be one or more than one and the number of the holes may be varied as per input strand width and the requirement to achieve optimum opening of this strand into either smaller strands or individual fibers.
  • the small holes may be aligned along lateral direction of the inner channel 22 as shown in FIGs.24 and 25 .
  • through hole 242 corresponding to a passageway for air passes through the cover 25 at an angle, preferably substantially perpendicular with respect to the passage 21 for filaments.
  • the diverging angle ⁇ ° of sidewall 234 of the divergent zone 23 is greater than 0° and less than 90°, preferably between 5° and 85°, more preferably 10° and 40°. It is to be mentioned, that the angle ⁇ ° is selected in such way as to achieve the desired width for the spread fibers, which will depend upon the width requirement for subsequent processing. Thus, if wider spread is required, larger angles will need to be selected.
  • the length of the inner channel 22 is preferably, but not limited to, between 10 and 30 mm.
  • the width and the depth of the inner channel 22 is selected as per input fiber strand width as well thickness so that the input fiber strand passes preferably easily through the channel 22, allowing efficient use of air for separating the strand into individual fibers.
  • the passageway 21 for filament may comprise only a divergent zone 23 without any rectilinear channel. If only opening or separating of the bundled strand into smaller strands or into individual fibers is required, a smallest possible ⁇ ° may be selected, preferably less than 2°.
  • the depth of the divergent zone 23 may be gradually varied.
  • the width and the length of the divergent zone 23 may also be suitably altered to obtain desired dimensions or desired cross-section area for the spread fiber.
  • FIG. 10 shows as an example a opening and spreading process of a fiber strand within a passageway 21 comprising a divergent zone 23 having sidewalls 234 that diverge at an angle ⁇ ° from the inner channel walls as the fiber strand moves in the direction represented with the arrow A and where the compressed air is applied perpendicularly to the fiber strand at a point immediately upstream from the divergent zone.
  • the arrow represents the principal moving direction of the fibers.
  • a fiber strand may be supplied from a fiber strand source, such as commercial available spool or roving.
  • the fiber strand is passing into the passageway 21 across the spread assembly 2 through an inlet opening 211.
  • the fiber strand can move or pass freely through the rectilinear 22 and diverging 23 channels.
  • the passing fiber strand attains the velocity according to the pulling force applied by the in-line subsequent process or by any suitable means. No special or separate pulling device is needed, in the case where the subsequent process is pulling the fibers.
  • a motorized rotating cylinder, tube or a mandrell can pull the fibers during winding process at a given winding speed.
  • the impregnated fibers may be shaped into a rod and be pulled by a chopper to make the pellets of desired length.
  • the speed will be determined by the speed requirement of the subsequent process such as pelletization.
  • the pelletization may be run at a speed of dozens to hundreds meter/min.
  • Compressed air flow supplied to the air passage through the air inlet 241 is applied to the fiber strand 5 at an angle, preferably perpendicularly, within the passage through small holes disposed at the air outlet 24.
  • the air pressure is selected depending upon the strength of the links between individual fibers.
  • the preferred pressure of air flow entering into the spreader assembly 2 is in the range of approximately 0.1 to 5 bras. For a commonly available commercial strand, air pressures of 0.5 to 3 bars may very well be suited to get good opening of fibers.
  • a pressure gradient is created across the divergent zone 23. Due to the pressure differential, the air entering the divergent zone 23 through its entrance end 231 flows through the entire width of the divergent zone 23 toward the outlet end 232 thereof.
  • the perpendicular air flow breaks up the links between individual filaments in the bundled fiber strand 5 created by, for example, a sizing or binding agent, physicochemical interactions, electrostatic force, mechanical, compaction or friction forces, and then, the divergent air stream created in the divergent zone forces the loosened and separated strands or filaments to spread widely and to disperse uniformly as shown in FIG.10 .
  • An advantage of the invention is that it may be practiced upon two or more fiber strands at once that are spread widely and dispersed uniformly by using a spreader assembly comprising two or more spreader units disposed one above the other or side by side. It is suitable for manufacturing a composite structure comprising a large amount of reinforcing fiber. Thus, several separate spreader units may be combined together and placed in such a combination as to obtain either desired width for the spread fibers and/or desired amount of glass % by weight required for the in-line subsequent processing into a composite reinforced structure. Furthermore, by connecting each inlet for air of the spreader units to an air compressor by conventional means, all spreader units may share one air supply.
  • FIGs.11 to 14 illustrate an embodiment of a spreader assembly comprising four spreader units, two external units 2a, 2d and two inner units 2b, 2c, which are disposed one above the other.
  • Each spreader unit although may have different structure to be used in combination, preferably has same structure as described above and illustrated in FIGS. 1 to 9 .
  • the base 26a of the upper external unit 2a is in contact with the cover 25b of the upper inner unit 2b which is just underneath.
  • the upper external unit 2a mounted on the upper inner unit 2b is horizontally shifted toward the direction of fiber movement (represented with the arrow A in FIG.12 ) so that the air inlet 241b of the upper inner unit 2b is uncovered and can be connected to a compressed air supply.
  • Each air inlet 241a, 241b may be connected to a compressed air supply by a conventional means (not shown).
  • a second inner unit 2c is mounted under the upper inner unit 2b without any horizontal sift.
  • a second external unit 2d is mounted under the second inner unit 2c and shifted horizontally toward the direction of the fiber movement. According to other embodiments more than four spreader units can be stacked.
  • FIGs.15 to 23 illustrate another preferred embodiment of the spreader assembly 2 according to the present invention comprising four spreader units, 2e, 2f, 2g and 2h.
  • the upper spreader unit 2e comprises a cover 25e and a base 26e which are joined together by a conventional means such as screw or clamps (not shown).
  • the cover 25e of the spreader unit 2e comprises two through holes 242e and 242f corresponding to air passages as shown in FIGs.16, 17 and 19 to 21 .
  • One through hole 242e is connected the air outlet 24e of spreader unit 2e and the other 242f is connected to the through hole 242f disposed in the base 26e of unit 2e which has a structure similar to the structure of the base 26a as described above.
  • the hole 242e allowed the arrival of air into the passageway 21e of the upper spreader unit 2e and the hole 242f allowed the arrival of air into the passageway 21f of an inner unit 2f underneath.
  • the hole 242f therefore, passes through the cover 25e, the base 26e and the cover 25f.
  • the base 26f of the inner unit 2f comprises a groove 21f which has a structure similar to the structure of the groove 21e of the base 26e but is shifted into a lateral direction in order to avoid overlapping of the position of the through hole 242f with the one 242e of unit 2e.
  • the inner units 2f and 2g are joined together with their respective base 26f and 26g.
  • the fiber strand may be spread and separated into individual fibers so that it can be impregnated with impregnating substances e.g., solid such as powder or liquids such as solutions, emulsions, dispersions of polymers, molten polymers, waxes, to form a composite structure.
  • impregnating substances e.g., solid such as powder or liquids such as solutions, emulsions, dispersions of polymers, molten polymers, waxes, to form a composite structure.
  • FIG.26 there is schematically shown typical impregnation system for manufacturing a composite structure reinforced with continuous fibers in which the spreader assembly of the present invention may be used.
  • Fiber strands 5 may be supplied from spools holding fiber strand and fed through a spreader assembly 2 according to the present invention by a conventional pulling mechanism of subsequent process 13.
  • the resulting fiber-opened strand 7 may be directed into an impregnation assembly 3 and subjected to an impregnation material brought from a source of impregnating material, e.g., an extruder 10.
  • the resulting impregnated fiber strand 9 may be shaped to have a desired shape with a shaping die 11, such as a round strand, rod, ribbon, tape, plate, tube or any other special shape.
  • the resulting product 9 may be cooled by a cooling means 12 or allowed to solidify or cure.
  • the cooled, solidified or cured profiles may be cut to desired lengths.
  • the resulting product 9 may be wound into a product such as pipe, cylinder, tube and panel, before cooling, solidification or curing. Also a readily formed rod may be cut to desired length using a pelletizer 14 to produce reinforced pellets which can be subsequently molded into composite parts. Such pellets with majority of fibers impregnated can lead to high performance composites even when molded at milder shear conditions.
  • the obtained long fiber reinforced composite structure comprises reinforcing fibers which may be well impregnated with the impregnating material.
  • FIG. 27 shows a stop action photo of this spreading using the spreader assembly comprising four spreader units. It shows that four fiber strands are opening and widely spreading into individual filaments.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
EP10160270A 2010-04-19 2010-04-19 Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen Withdrawn EP2377978A1 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
EP10160270A EP2377978A1 (de) 2010-04-19 2010-04-19 Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen
US13/641,945 US20130193623A1 (en) 2010-04-19 2011-04-19 Method and Equipment for Reinforcing a Substance or an Object with Continuous Filaments
KR1020127030248A KR20130094199A (ko) 2010-04-19 2011-04-19 연속 필라멘트로 물질 또는 물체를 보강하는 방법 및 장비
EP11716399A EP2560809A1 (de) 2010-04-19 2011-04-19 Imprägnieranordnung und verfahren zur herstellung einer mit langfasern verstärkten verbundstruktur
KR20127027431A KR20130081641A (ko) 2010-04-19 2011-04-19 함침 어셈블리 및 장섬유로 보강된 복합 구조물을 제조하는 방법
PCT/EP2011/056228 WO2011131664A1 (en) 2010-04-19 2011-04-19 Impregnation assembly and method for manufacturing a composite structure reinforced with long fibers
US13/641,932 US20130113133A1 (en) 2010-04-19 2011-04-19 Impregnation Assembly and Method for Manufacturing a Composite Structure Reinforced with Long Fibers
PCT/EP2011/056236 WO2011131670A1 (en) 2010-04-19 2011-04-19 Method and equipment for reinforcing a substance or an object with continuous filaments
EP11716507A EP2561124A1 (de) 2010-04-19 2011-04-19 Verfahren und ausrüstung zur verstärkung eines stoffes oder eines gegenstandes mit kontuierlichen filamenten

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Application Number Priority Date Filing Date Title
EP10160270A EP2377978A1 (de) 2010-04-19 2010-04-19 Verfahren und Vorrichtung zur Ausbreitung von Fasersträngen

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102505242A (zh) * 2011-11-03 2012-06-20 西北工业大学 一种连续纤维束分散装置
EP3124661A1 (de) 2015-07-31 2017-02-01 Airbus Defence and Space GmbH Dynamisches aufspreizen von endlosfaserbündeln während eines herstellungsprozesses
CN114000263A (zh) * 2021-11-22 2022-02-01 上海楚桦仪器科技有限公司 全自动生产抗落絮无纺布的方法及临床全防护医用手术单
CN114395834A (zh) * 2021-12-23 2022-04-26 山东非金属材料研究所 一种用于制备连续混纤丝的工艺和装置

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US2657433A (en) * 1950-11-14 1953-11-03 Courtaulds Ltd Continuous processing of filamentary tow
US3535745A (en) * 1967-09-18 1970-10-27 Eastman Kodak Co Method and apparatus for opening multifilament tows
US3873389A (en) 1971-12-08 1975-03-25 Philco Ford Corp Pneumatic spreading of filaments
US4799985A (en) 1984-03-15 1989-01-24 Hoechst Celanese Corporation Method of forming composite fiber blends and molding same
GB2340136A (en) * 1998-07-31 2000-02-16 Plastic Dev Ltd Dividing tows
US6032342A (en) 1996-05-01 2000-03-07 Fukui Prefecture Multi-filament split-yarn sheet and method and device for the manufacture thereof
WO2000065134A1 (fr) * 1999-04-23 2000-11-02 Rieter Perfojet Dispositif permettant d'assurer l'ouverture et la repartition d'un faisceau de filaments lors de la realisation d'une nappe textile non tissee
EP1096047A1 (de) * 1999-10-25 2001-05-02 Celanese Acetate, LLC. Vorrichtung, Verfahren und System zur Ausbreitung eines Faserbündels durch Luftstrahlen und damit hergestellte Faserbahn
JP2008255529A (ja) * 2007-04-06 2008-10-23 Daicel Chem Ind Ltd 繊維シートの製造装置及び製造方法
DE102008003369A1 (de) * 2008-01-08 2009-07-09 Hauni Maschinenbau Aktiengesellschaft Ausbreiterdüse

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2657433A (en) * 1950-11-14 1953-11-03 Courtaulds Ltd Continuous processing of filamentary tow
US3535745A (en) * 1967-09-18 1970-10-27 Eastman Kodak Co Method and apparatus for opening multifilament tows
US3873389A (en) 1971-12-08 1975-03-25 Philco Ford Corp Pneumatic spreading of filaments
US4799985A (en) 1984-03-15 1989-01-24 Hoechst Celanese Corporation Method of forming composite fiber blends and molding same
US6032342A (en) 1996-05-01 2000-03-07 Fukui Prefecture Multi-filament split-yarn sheet and method and device for the manufacture thereof
GB2340136A (en) * 1998-07-31 2000-02-16 Plastic Dev Ltd Dividing tows
WO2000065134A1 (fr) * 1999-04-23 2000-11-02 Rieter Perfojet Dispositif permettant d'assurer l'ouverture et la repartition d'un faisceau de filaments lors de la realisation d'une nappe textile non tissee
EP1096047A1 (de) * 1999-10-25 2001-05-02 Celanese Acetate, LLC. Vorrichtung, Verfahren und System zur Ausbreitung eines Faserbündels durch Luftstrahlen und damit hergestellte Faserbahn
JP2008255529A (ja) * 2007-04-06 2008-10-23 Daicel Chem Ind Ltd 繊維シートの製造装置及び製造方法
DE102008003369A1 (de) * 2008-01-08 2009-07-09 Hauni Maschinenbau Aktiengesellschaft Ausbreiterdüse

Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN102505242A (zh) * 2011-11-03 2012-06-20 西北工业大学 一种连续纤维束分散装置
CN102505242B (zh) * 2011-11-03 2013-11-27 西北工业大学 一种连续纤维束分散装置
EP3124661A1 (de) 2015-07-31 2017-02-01 Airbus Defence and Space GmbH Dynamisches aufspreizen von endlosfaserbündeln während eines herstellungsprozesses
DE102015010012A1 (de) 2015-07-31 2017-02-02 Airbus Defence and Space GmbH Dynamisches Aufspreizen von Endlosfaserbündeln während eines Herstellungsprozesses
CN114000263A (zh) * 2021-11-22 2022-02-01 上海楚桦仪器科技有限公司 全自动生产抗落絮无纺布的方法及临床全防护医用手术单
CN114395834A (zh) * 2021-12-23 2022-04-26 山东非金属材料研究所 一种用于制备连续混纤丝的工艺和装置

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