US3672819A - Process for shaping a bundle of wet-spun continuous filaments - Google Patents

Process for shaping a bundle of wet-spun continuous filaments Download PDF

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Publication number
US3672819A
US3672819A US881345A US3672819DA US3672819A US 3672819 A US3672819 A US 3672819A US 881345 A US881345 A US 881345A US 3672819D A US3672819D A US 3672819DA US 3672819 A US3672819 A US 3672819A
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United States
Prior art keywords
multifilament
fleece
bundle
band
wet
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Expired - Lifetime
Application number
US881345A
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English (en)
Inventor
Shigeo Katsuyama
Atsumi Asami
Masahide Watanabe
Tsutomu Sato
Toshiaki Norimatsu
Eizo Nakajima
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Asahi Kasei Corp
Asahi Chemical Industry Co Ltd
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Asahi Chemical Industry Co Ltd
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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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/04—Supporting filaments or the like during their treatment
    • D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
    • D01D10/0472—Supporting filaments or the like during their treatment while in continuous movement the filaments being supported on endless bands
    • 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
    • D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
    • D01D10/06—Washing or drying

Definitions

  • This invention relates to an improved process for the shaping of wet-spun continuous filament bundles, at a high speed and in a continuous way and an apparatus for carrying out the same.
  • the invention should be applied to fine filaments, each having a denier less than d., the overall denier of the filament bundle being limited to less than 1,000 denier.
  • continuous filament bundles are successively supplied on a travelling conveyor so as to take each a combination of two or more kinds of curved or looped plane configurations having various plane sizes for subjecting them to successive liquid treatments.
  • the filament bundles carried on the pervious conveyor belt take according to the prior technique zigzag, rought loops or the like simpler forms and are stacked to form only two or three layers when seen at a certain point as a measuring reference.
  • a further object of the invention is to provide an improved technique of the above kind for bleaching treatment of wet-spun continuous filament bundles with a very small requirement of floor space and at a considerably small operating cost.
  • the method according to this invention has its broadest coverage, residing, indeed, in a process for the shaping of wet-spun continuous filament bundles prior to scouring treatment, each of said filaments having 10' denier at the maximum and each of said bundles having less than 2,000 denier, in the shape of parallel bands on a pervious conveyor means, said process being characterized in that the band comprised of said filament bundle is in the shape of an elongated and thick fleece mat having a thickness of at least 5 mm. and IOU-1,00 0 crossings of multifilament bundles when measured at any point along the length of said band and in the state of the band of filament bundle as projected from a casting nozzle onto and deposited in position on said conveyor means by means of water spray jet.
  • a plurality of wet-spun continuous filament bundles are blown onto the surface of a travelling endless and pervious conveyor means in a thickly stacked threedimensional band having a thickness larger than mm. by blowing each bundle through an air jet means, while at the same time a liquid jet stream is blown onto the stacked fibrous band in such a way that the air jet stream and the liquid jet stream cross at least partially with each other on the conveyor means for practically setting the relative position of the blown-on fiber bundles constituting aid band of the continuous filament bundle and then the band-shaped fiber stack is subjected to bleaching on the conveyor band.
  • the apparatus adapted according to this invention for carrying out the above process may comprise in combination, a hollow projecting cylinder means arranged for receiving and delivering a continuous filament bundle; an air ejector having its outlet end opening into the interior space of said projecting cylinder; a conveyor means of pervious nature for receiving the projected filament bundle delivered together with ejected air streams from said cylinder, said filament bundle being shaped on the conveyor means into an elongated stack of elongated fleece mat of filament bundles as the conveyor means proceeds; and a spray nozzle for provisionally setting said fleece structure of three-dimensional nature having a thickness of at leats 5 millimeters by means of water jet streams impinged on the fleece band as it is formed on said conveyor means.
  • pervious means such nature of the conveyor or of the densely looped and stacked multifilament fleece band means that it allows passage therethrough of air, water or the like liquid medium, or the both.
  • the overall thickness of the densely looped fleece mat band amounts at its upper limit to as large as about 20 mm. This upper limit will be further increased under still further improved operating conditions. Therefore, it would be easily conceivable that the densely looped band is practically a kind of fleece mat. It is highly advantageous to so arrange that the fleece band is transferred in its up-and-down state from the first conveyor means to the second conveyor means.
  • FIGS. 1A and 1B represent a single figure in combination, the coincidence line being shown at H, which figure is a substantially sectional side view of a preferred embodiment of the arrangement adapted for carrying out the process according to this invention.
  • FIGS. 2A and 23 represent in combination a single figure, the coincidence line being shown at 11-11, which is a plan view of the arrangement shown in FIG. 1.
  • FIG. 3 is an enlarged sectional view of essential parts of the mechanism for the formation of multifilament condensed fleece mat band, said mechanism being a constituent of the arrangement shown in FIGS. 1-2.
  • FIG. 4 is a perspective view of a plurality of said mechanisms shown in FIG. 3.
  • FIG. 5 is a chart showing several examples of condensed multifilament fleece mat band shown in its thickness in function of the denier of multifilament bundle.
  • FIG. 6 shows several preferred embodiments of scraper means.
  • the numeral 10 denotes a wet-spun continuous filament bundle, made preferably of regenerated cellulose, especially viscose rayon.
  • This filament is supplied from a proper source, such as rayon cakes, not shown.
  • the multifilament 10 is supplied through feed roller 11 and guide 12 to a supply ejector 13, the introductory part of which projects from a projector cylinder 14, while the main part and the delivery end of ejector 13 are positioned within the interior of said cylinder 14.
  • Compressed air is supplied to the ejector 13 from a supply source, not shown, through a feed piping 48 fitted with a regulator valve 47, thus the multifilament bundle 10 being introduced by the suction effect.
  • the introduced bundle 10 is delivered from the outlet or lowermost end of the ejector 13 together with the delivered air jet streams, said delivered bundle being projected substantially in a straight line at 49 and impinging against the curved inside wall surface of the cylinder 14.
  • the compressed air streams perform in this region swirling motion within the interior of said cylinder, thereby the filament bundle being transformed into a series of continuous loops as shown especially in FIG. 3.
  • filament yarn loops are continuously and successively projected onto the surface of a travelling endless belt 17 from the lowermost end of the projector tube 14 under the influence of the downwardly issuing air jet streams.
  • This belt 17 is made of a pervious material such as wire net or the like.
  • Numerals 41 and 44 show supporting brackets which are fixedly mounted, although the fixing and mounting means have been omitted from the drawing, although not shown.
  • fixing steel band strips 43 and 46 and fixing nut means 42 and 45 are provided for rigidly and stationarily positioning the projector cylinder 14 together with the ejector 13 as shown.
  • the multifilament fleece mat forming unit utilizing the air jet and the swirling motion thereof has been shown and described in singular only, a plurality of such units or mechanisms are arranged in practice for a workable plant, as only schematically and partially illustrated in FIG. 4.
  • the number of such units may amount to 100 or more.
  • These units are generally arranged in line laterally of the pervious endless belt 17 On certain occasions, however, they are arranged in two or more rows and in some offset manner, although not illustrated.
  • the numeral 19 denotes a water supply pipe or distributor from which water is fed under pressure to the corresponding number of spray nozzles 20.
  • the water spray jet 22 delivered from the outlet end of each of the nozzles 20 is projected against the newly formed multifilament fleece mat 21 as it is formed just below the projector tube 14 on the surface of said travelling belt 17.
  • the nozzle 20 is so directed and arranged that the projected area of water jet onto the fleece mat as formed crosses the air jet area projected against the conveyor belt 17.
  • the continuously projected multifilament loops from the lower or outlet end of the projector cylinder 14 at a heavy speed is avoided from being strongly disturbed and entangling which may be caused by the rushingly discharged air jet streams from the projector cylinder and thus the looped multifilament can be accumulated on the surface of the conveyor belt 17 without being blown off.
  • the shape of the multifilament loop is highly variable and may take the form of circles, ellipses, eights or even the shape of almost overlapped slits. In this way, however, the multifilament loops are accumulated and deposited on the surface of the travelling conveyor belt 17 in a thick and elongated fleece mat 21 having a thickness of 20 mm.
  • the water jets act as the medium for setting provisionally the mutual position of the condensedly deposited multifilament fleece structure.
  • the fleece mat 21 represents 100-2,000 crossings of the multifilament when measured at a certain point downstream of the deposited area.
  • the limiter consists of a series of limiter elements arranged in a lateral row and made into a single piece adapted for cooperation with the multi-unit system.
  • the vertical walls 15a of the limiter serve in practice for the width limiting purpose.
  • the pervious conveyor belt 17 is driven in the counter clockwise direction when seen in FIGS. 1, 3 and 4, said belt being threaded for this purpose around a drive roller 16 and a driven roller 18, although the prime mover has been omitted from the drawing only for simplicity.
  • the drive roller 16 is larger than the driven roller 18 and arranged adjustable in its vertical position as hinted by a double headed arrow A.
  • the elongated band strip of fleece mat 21 When the travelling. speed of the conveyor belt 17 is adjusted to 0.5-1.0 m./min., as an example, and by selecting the bore of projector cylinder 14, the blowing speed and pressure of the swirling compressed air to proper values, the elongated band strip of fleece mat 21 will represent a thickness of 5-20 mm. or more, width of 8-60 mm. and multifilament crossings -2,000. Thus, the fleece band strip 21 represents a three-dimensional, highly condensed multilayer construction.
  • the Wet fleece band strip 21 is transferred in its up-and-down reversed state onto the surface of a second pervious conveyor belt 28, this fleece transfer being carried out without appreciable alteration of the general structure thereof, indeed, thanks to the provisional setting effect provided by the application of the water jet streams. If this application should not be adopted, the fleece structure could be substantially damaged and thus considerable difliculty in untangled and smooth take-up of the multifilament would be encountered at the combined final stage of the scouring and drying state to be described for winding up of the multifilament on a bobbin.
  • the squeezed fleece layer strip is then conveyed by means of the second conveyor 28 into a tunnel dryer 26 for being dried up.
  • the conveyor 28 is practically covered fully with a large number of the parallel fleece strips having a large thickness and substantially compacted structure, the drying thermal efficiency will be highly improved in comparison with the prior art.
  • the multifilament bundle, upon leaving from the outlet end of drier 26 is taken out in the form of a continuous line-shape as at 50 through a yarn guide 31 and for the purpose of winding-up on a bobbin, not shown.
  • This winding-up operation can be effected at a high speed of 500- l,000 m./min. without fear of yarn tangling and breakage.
  • FIG. 5 are several examples of the multifilament fleece band strip provided by the novel teaching, showing the preferred mutual relationship among the specified data concerning denier of multifilament, thickness of fleece band strip and winding-up speed. These data were ascertained by our practical experiments. From these data, a highly improved scouring efliciency may well be suposed. p Upon checking the processed multifilaments, it was ascertained that the scouring and drying efiects were highly even and superior. Thus, the overallquality of the yarn could be substantially improved.
  • the supply roller 11 is rotatably mounted at its both ends by bearing means 32, 32'.
  • Bearing means 36, 33 are provided in the same way for conveyor drive roller 27, and those of 34, 34 for the follower roller 18.
  • Several bearing means 35, 35; 36, 36'; 37, 37'; 38, 38' are also provided for drive roller 16, squeezing roller 30, 30' and conveyor drive roller 27', respectively.
  • Numeral 39 represents a conventional mechanism for the prevention of fluctuation of travelling of conveyor means 28.
  • the numeral 40 represents several fans which deliver hot air to the drier 26.
  • FIG. 6 several preferred embodiments of scraper means are shown at 60a, 60b and 60c.
  • the first one at 60a consists of a rigid round bar made preferably of stainless steel.
  • the second one at 60b consists of plastic material such as semi-rigid bar having substantially a rectangular cross-section.
  • the third one shown at 600 comprises an elongated rigid bar-like base 61 embedded with brush hair 62.
  • scraper means are arranged at an intermediate portion between the ends of the second conveyor belt 28 and in physical contact with the lower surface of the upper travelling zone thereof. These scrapers are arranged laterally of the belt 28 in the similar way as the rollers 29, 29. During the scouring treatment, the liquid will frequently fill the meshes of the conveyor net 28 or the like pervious carrier means. By the provision of these scraper means, the thus filling liquor film can be effectively broken, thus a possible lateral flow of the scouring liquor on the surface of the melt being effectively avoided.
  • each of said multifilaments to have 10 denier at the maximum, each of said bundles amounting to less than 2,000 denier, and
  • Process according to claim 1 further comprising: projecting said multifilament bundle from a casting cylinder onto said conveyor means in the form of a thick band by utilizing the energy of ail jet streams.
  • Process according to claim 2 further comprising: setting provisionally the state of said band as projected from said casting cylinderpnto said conveyor means by means of water jet streams.
  • a process for depositing and shaping wet-spun continuous multifilament bundles in the shape of parallel bands on a continuously moving pervious conveyor means comprising blowing each bundle through an air jet means onto said conveyor means in a looped manner and provisionally setting the looped bundle into an elongated band by directing a liquid jet onto said band transversely to the direction of the air jet.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US881345A 1968-12-03 1969-12-02 Process for shaping a bundle of wet-spun continuous filaments Expired - Lifetime US3672819A (en)

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Application Number Priority Date Filing Date Title
JP8822968 1968-12-03

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US3672819A true US3672819A (en) 1972-06-27

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US (1) US3672819A (enrdf_load_stackoverflow)
BR (1) BR6914745D0 (enrdf_load_stackoverflow)
SU (1) SU413682A3 (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4324353A (en) * 1980-03-31 1982-04-13 Hoechst Fibers Industries, Div. Of American Hoechst Corp. Apparatus for handling textile filamentary material
US4418856A (en) * 1980-01-14 1983-12-06 Proctor & Schwartz, Inc. Apparatus for plaiting tow onto a conveyor
US4422225A (en) * 1978-09-19 1983-12-27 Vepa Aktiengesellschaft Apparatus for depositing a moving fiber strand as folded loops
US4436123A (en) 1980-10-31 1984-03-13 Ruti Machinery Works Ltd. Device for storing filamentary material for use on a loom
US4785510A (en) * 1986-05-13 1988-11-22 G & W Maschinen Ag Method and apparatus for the continuous looping of yarn
US6702862B1 (en) * 1998-01-27 2004-03-09 Shikokuizumisenni, Ltd Method and apparatus for stabilizing cloth, and method of manufacturing cloth
US20120018916A1 (en) * 2010-07-26 2012-01-26 Superba Process and device for texturing yarns for rugs or carpet upstream of a heat treatment unit
CN103628161A (zh) * 2013-12-04 2014-03-12 宜宾丝丽雅集团有限公司 新型高速纺丝机
CN103628154A (zh) * 2013-12-04 2014-03-12 宜宾丝丽雅集团有限公司 一种设置有通轴被动卷绕装置的纺丝机的纺丝工艺

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4422225A (en) * 1978-09-19 1983-12-27 Vepa Aktiengesellschaft Apparatus for depositing a moving fiber strand as folded loops
US4418856A (en) * 1980-01-14 1983-12-06 Proctor & Schwartz, Inc. Apparatus for plaiting tow onto a conveyor
US4324353A (en) * 1980-03-31 1982-04-13 Hoechst Fibers Industries, Div. Of American Hoechst Corp. Apparatus for handling textile filamentary material
US4436123A (en) 1980-10-31 1984-03-13 Ruti Machinery Works Ltd. Device for storing filamentary material for use on a loom
US4785510A (en) * 1986-05-13 1988-11-22 G & W Maschinen Ag Method and apparatus for the continuous looping of yarn
US6702862B1 (en) * 1998-01-27 2004-03-09 Shikokuizumisenni, Ltd Method and apparatus for stabilizing cloth, and method of manufacturing cloth
US20120018916A1 (en) * 2010-07-26 2012-01-26 Superba Process and device for texturing yarns for rugs or carpet upstream of a heat treatment unit
US8713767B2 (en) * 2010-07-26 2014-05-06 Superba Process and device for texturing yarns for rugs or carpet upstream of a heat treatment unit
CN103628161A (zh) * 2013-12-04 2014-03-12 宜宾丝丽雅集团有限公司 新型高速纺丝机
CN103628154A (zh) * 2013-12-04 2014-03-12 宜宾丝丽雅集团有限公司 一种设置有通轴被动卷绕装置的纺丝机的纺丝工艺
CN103628154B (zh) * 2013-12-04 2016-02-10 宜宾丝丽雅集团有限公司 一种设置有通轴被动卷绕装置的纺丝机的纺丝工艺

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BR6914745D0 (pt) 1973-01-16
SU413682A3 (enrdf_load_stackoverflow) 1974-01-30

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