US3887972A - Crimping of synthetic plastic filaments - Google Patents

Crimping of synthetic plastic filaments Download PDF

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Publication number
US3887972A
US3887972A US381493A US38149373A US3887972A US 3887972 A US3887972 A US 3887972A US 381493 A US381493 A US 381493A US 38149373 A US38149373 A US 38149373A US 3887972 A US3887972 A US 3887972A
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US
United States
Prior art keywords
groove
combination
filament
apertures
drum
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.)
Expired - Lifetime
Application number
US381493A
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English (en)
Inventor
Ernst Bauch
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.)
Neumuenstersche Maschinen und Apparatebau GmbH
Original Assignee
Neumuenstersche Maschinen und Apparatebau GmbH
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 Neumuenstersche Maschinen und Apparatebau GmbH filed Critical Neumuenstersche Maschinen und Apparatebau GmbH
Priority to US485735A priority Critical patent/US3899811A/en
Application granted granted Critical
Publication of US3887972A publication Critical patent/US3887972A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics

Definitions

  • ABSTRACT A synthetic plastic filament is advanced in plastic con- [30] Foreign Application Priority Data July 22, l972 Germany....m.............,... 2236024 clitlon against a contact surface WhlCh travels continu- 52 us. 28/l.4 and which is Pmvided with agmve which [5 l] Int. D02g 1/16 apertures extend outwfirdly
  • the filament becomes [58] Field of Search 28/13, 1.4 L6 L8, crimped upon entering into the groove and contacting 28/72! I, 7212 '4 the walls bounding the same. Cooling fluid is admitted into the groove and is withdrawn from the same through the apertures.
  • Another prior-art construction utilizes a rotating screen drum, the interior of which is connected through its hollow mounting shaft to the suction side of a blower or ventilator.
  • This arrangement serves to cool already crimped filaments, that is filaments which have been crimped in a separate device and are advanced in already crimped condition into the drum.
  • the wall of the drum is proposed to be of a stretched fabric.
  • Another object is to provide such a method which affords an improved three-dimensional random crimping effect.
  • An additional object of the invention is to provide an apparatus for carrying out the novel method.
  • one feature of the invention recites, in an apparatus for crimping synthetic plastic filaments, in a combination comprising first means having a surface provided with a groove, and with a plurality of apertures extending from the interior of the groove through the first means. Second means is provided for moving the first means so that the surface travels continuously. Third means directs a synthetic plastic filament in plastic state into the groove substantially normal to the surface, so that the filament becomes crimped in the groove.
  • the groove is narrow, the term narrow being intended to be understood as meaning that the spacing of the lateral walls bounding the groove-at least in the region in which they will be contacted by the filament, that is in the region of the bottom of the groovewill be smaller or at most slightly larger than the diameter of the crimped filament.
  • the groove is of substantially wedge-shaped crosssectional configuration.
  • the groove may also be of rectangular cross section or of trapezoidal cross section.
  • the depth of the groove is advantageously at least substantially equal to its width at the open side of the groove.
  • the apertures are of small cross section and advantageously configurated as essentially transversely extending slots.
  • access is provided for cooling fluid over at least a substantial portion of the length of the groove, and at the side of the first means which faces away from the surface having the groove, there is provided a suction device which withdraws the cooling fluid through the apertures communicating with the groove.
  • the groove may be provided inthe narrow side of a thin element which is subdivided in lamella fashion, at least in the region of the groove, by the aforementioned slots.
  • This element may be accommodated in a housing which, except for a slit affording access to the groove, is otherwise closed everywhere and connected with a suction conduit. It is particularly simple and advantageous if the element is a circular disc or plate, and if the housing is a drum which is fixedly connected with it and is mounted for rotation on a shaft which is hollow and whose interior is connected with the suction conduit.
  • Two or more such plates may be mounted in one and the same drum, axially spaced from one another.
  • the drum may be surrounded over at least a portion of its circumference by a stationary casing the interior of which is connected with the pressure side of a ventilator.
  • the suction side of the ventilator may have interposed in it a filter, and a cooling device may be located between the ventilator and the casing.
  • FIG. 1 is a vertical section through an embodiment of the present invention, shown somewhat diagrammatically and intended primarily for purposes of explanation of the principle of the invention;
  • FIG. 2 is a top plan view of the contact face having the groove therein, and still being diagrammatic for explanatory purposes;
  • FIG. 3 is a fragmentary vertical section through a first embodiment of the invention
  • FIG. 6 is a fragmentary section, illustrating a detail of a further embodiment of the invention.
  • FIG. 7 is a perspective, partly broken-away, of the embodiment in FIG. 6.
  • reference numeral 1 identifies a thread suppying device which is located above a component having a contact face 2.
  • the device 1 has an outlet nozzle 3 through which a synthetic plastic filament in plastic condition is ejected at relatively high speed.
  • the opening of the nozzle 3 is so directed that it faces into a groove 4 formed in the contact face 2 and having in the illustrated embodiment the cross-sectional configuration of a wedge or an equilateral triangle.
  • the width b of the groove 4 at the open side thereof is substantially equal to its depth 1. For this reason, the lateral surfaces 5 and 6 bounding the groove are relatively steep.
  • the walls of the groove are provided with many small diameter and closely adjacent apertures which may, for instance, have the form of transverse slots 7, as shown in FIG. 2.
  • the filament issuing from the nozzle 3 at relatively high speed impacts the groove in the region of the bottom thereof and becomes randomly crimped. Since the contact face advances in the direction of the arrow 8, the crimped filament is taken along in this direction and is cooled by cooling fluid (e.g., air) which is drawn through the slots 7, as indicated by the arrows 9; this results in a fixing of the crimped filament in its crimped state.
  • cooling fluid e.g., air
  • a flat drum 10 is provided having end walls 11 and 12.
  • the end wall 11 is configurated as a planar disc having a short cylindrical projection 13, and the end wall 12 differs from it only in that it has a hollow stub shaft 14.
  • a circumferentially extending slot 15 which exposes a wedge-shaped groove 4 formed in the peripheral edge face of a thin annular disc 16.
  • the thickness of this disc is not much greater in axial direction than the width of the groove 4 and the diameter is just as large as the inner diameter of the projections 13 of the end walls I] and 12.
  • the edges 17 of the disc 16 at opposite sides of the groove 4 are thus seated in the cylindrical projections 13 and the disc 16 may for instance be connected by means of nonillustrated screws with the end walls I! and 12 so as to be rigid therewith, being held at appropriate spacing from them by nonillustrated spacing members.
  • the entire circumference of the disc 16 is subdivided in lamella like fashion by radial slots 19 whose depth, that is their dimension in radial direction, should be at least equal to the depth of the groove 4. In the illustrated embodiment, their depth is slightly greater. The disc can be more readily produced and also cleaned if it is composed of two superimposed thinner discs.
  • the stub shaft 14 is rotatably journalled on the fixedly mounted suction conduit 20 and provided with a pulley 21, so that the drum 20 can be driven via a motor 22 by means of the belt drive 21, 23, 24 in the direction of the arrow 8 shown in FIG. 4.
  • the suction conduit 20 communicates with the suction side of a ventilator 25, and an adjustable flap 26 can be provided to regulate the suction effect.
  • Reference numeral 27 identifies a discharge conduit for condensation.
  • a stationary casing 28 whose partcircular lateral wall portions 29, 30 are in sealing engagement with the end walls 11 and 12 of the drum 10. Further components serve for sealing the casing 28 which is in communication with a blower 34 via a conduit 32 in which a cooling device 33 of known construction is interposed.
  • a filter 36 is interposed in the suction conduit of the blower 34 so as to remove contaminants from air which is drawn into the blower.
  • Nozzles 37 are provided in the interior of the casing 28 and a conduit 38 communicates with the nozzles 37 so as to permit the latter to receive liquid whose quantity can be regulated by a valve 39.
  • Reference numeral 40 identifies an outlet conduit, reference numeral 41 a frame and reference numeral 42 a reversing roller.
  • the pneumatic filament supply device 1 which is to be used with the apparatus of FIGS. 3 and 4 has tubular outlet portion 43 and a tubular inlet portion 44.
  • An annular clearance 46 is formed which is closed at the upper end by the threaded connection 47.
  • the bore 48 of the element 43 corresponds approximately to the bore of the element 44.
  • a compressed air conduit 49 communicates laterally with the annular space or clearance 46, and a heating coil 50 is accommodated in the conduit 49.
  • the device 1 is arranged so as to discharge normally or nearly normally into the groove 4.
  • FIGS. 6 and 7 show a further embodiment of the invention wherein several of the discs 16 are arranged in one and the same drum. Spacing elements 18 are provided in the interior of the drum intermedite the individual discs 16, and cylindrical members 51 are provided at the periphery which are connected with annular discs 52. In keeping with the number of the discs I6, a corresponding number of supply devices is provided. Because of space considerations, the devices 1 are offset relative to one another in FIG. 7. In all other respects, the embodiment of FIGS. 6 and 7 corresponds to that in FIGS. 3-5.
  • the uncripmed filament 53 is heated in the device I and thereby brought into plastic condition as it passes through the same. Because the device I is constructed like an injector, the filament is taken along in the device 1 and is blown forcibly into the groove 4, where it will Contact the walls of the groove and because of the impacting involved will assume an irregularly crimped condition.
  • the hot gas issuing from the outlet of the device I is rapidly withdrawn through the slots 19.
  • the crimped filament in the groove 4 is taken along by the rotating disc 16, and because cool air flows around it its crimped structure is fixed and in fact. even further improved.
  • a liquid such as water or a coloring agent
  • the crimpcd filament is withdrawn via the reversing roller 42 and is supplied to a take-up device (not shown).
  • the apparatus and method according to the present invention provide for a much improved crimping el feet. in addition, however. they assure that cooling fluid will pass through the surface having the groove 4 only at those areas where the filament is actually located namely in the region of the groove.
  • the particular configuration of the groove and the arrangement of the supply of the cooling fluid assures that the cooling fluid will wash over the crimped filament very thoroughly and afford intensive cooling of the filament, so that the latter will be fixed in its crimped condition in a relatively short period of time, so that a high throughput per unit of time can be achieved in the apparatus according to the present invention despite its small dimensions.
  • a combination comprising first means having a surface; second means for moving said first means so that said surface travels continuously; third means for directing a synthetic filament in plastic state in a path substantially normal to said surface, so as to become crimped by contact with said surface. and a groove formed in said surface into which said filament enters so as to be confined against lateral displacement upon contact with the travelling surface, said groove including a plurality of apertures extending from its interior through said first means.
  • a combination as defined in claim 1. further comprising a housing; a suction device communicating with said housing; and wherein said first means comprises a thin-walled element provided with said groove and being accommodated in said housing the latter having a gap for enabling access to said groove, and said apertures being slots in said element.
  • said housing is a rotatable drum having a hollow shaft which is mounted for rotation and communicates with said suction device; and wherein said element is a circular plate mounted in said drum and extending transversely of the axis of rotation thereof.
  • said first means comprises at least one additional plate similar to the firstmentioned plate and arranged in said drum with axial spacing from said first-mentioned plate.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US381493A 1972-07-22 1973-07-23 Crimping of synthetic plastic filaments Expired - Lifetime US3887972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US485735A US3899811A (en) 1972-07-22 1974-07-03 Crimping of synthetic plastic filaments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2236024A DE2236024A1 (de) 1972-07-22 1972-07-22 Vorrichtung zum kraeuseln und anschliessenden kuehlen eines kuenstlichen fadens

Publications (1)

Publication Number Publication Date
US3887972A true US3887972A (en) 1975-06-10

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Family Applications (1)

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US381493A Expired - Lifetime US3887972A (en) 1972-07-22 1973-07-23 Crimping of synthetic plastic filaments

Country Status (8)

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US (1) US3887972A (it)
JP (1) JPS4985341A (it)
CH (1) CH559787A5 (it)
DE (1) DE2236024A1 (it)
FR (1) FR2193894B1 (it)
GB (1) GB1431936A (it)
IT (1) IT989942B (it)
NL (1) NL7308091A (it)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074405A (en) * 1974-11-26 1978-02-21 Allied Chemical Corporation Apparatus for texturizing yarn
US4296535A (en) * 1975-10-02 1981-10-27 Allied Chemical Coporation Apparatus for texturizing continuous filaments
US4462143A (en) * 1982-03-12 1984-07-31 Allied Corporation Method for controlling texture level in a moving cavity texturing process
US4467507A (en) * 1982-03-12 1984-08-28 Allied Corporation Apparatus and method for producing commingled continuous variable texture yarn
US4558497A (en) * 1982-03-12 1985-12-17 Allied Corporation Method for producing commingled continuous variable texture yarn
US4765042A (en) * 1982-03-12 1988-08-23 Allied Corporation Apparatus for texturing continuous filamentary tow
US4930198A (en) * 1982-03-12 1990-06-05 Allied-Signal Inc. Apparatus for texturing continuous yarn
US6492020B1 (en) 1999-06-18 2002-12-10 E. I. Du Pont De Nemours And Company Staple fibers produced by a bulked continuous filament process and fiber clusters made from such fibers
US20080083103A1 (en) * 2006-10-04 2008-04-10 Dietze & Schell Maschinenfabrik Gmbh & Co. Kg. Process and apparatus for the production of artificial grass

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2807490C2 (de) * 1978-02-22 1986-07-17 Bayer Ag, 5090 Leverkusen Verfahren zum Abkühlen eines Garnstopfens
CN1014728B (zh) * 1987-10-05 1991-11-13 里特机械公司 热塑性纤维连续卷曲方法及设备
TWI544862B (zh) 2015-10-16 2016-08-01 King Slide Works Co Ltd 支撐總成及其支撐裝置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US3146512A (en) * 1960-05-30 1964-09-01 American Enka Corp Crimping apparatus
US3156028A (en) * 1958-06-03 1964-11-10 Du Pont Process for crimping textile yarn
US3389445A (en) * 1966-03-31 1968-06-25 Allied Chem Moving side wall crimping process and apparatus therefor
US3438101A (en) * 1966-12-22 1969-04-15 Allied Chem Process and apparatus for texturizing yarn
US3665567A (en) * 1970-04-23 1972-05-30 Uniroyal Inc Yarn rebound texturing apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2435891A (en) * 1941-06-24 1948-02-10 American Viscose Corp Method and apparatus for crimping textile fibrous material
US3156028A (en) * 1958-06-03 1964-11-10 Du Pont Process for crimping textile yarn
US3146512A (en) * 1960-05-30 1964-09-01 American Enka Corp Crimping apparatus
US3389445A (en) * 1966-03-31 1968-06-25 Allied Chem Moving side wall crimping process and apparatus therefor
US3438101A (en) * 1966-12-22 1969-04-15 Allied Chem Process and apparatus for texturizing yarn
US3665567A (en) * 1970-04-23 1972-05-30 Uniroyal Inc Yarn rebound texturing apparatus and method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074405A (en) * 1974-11-26 1978-02-21 Allied Chemical Corporation Apparatus for texturizing yarn
US4296535A (en) * 1975-10-02 1981-10-27 Allied Chemical Coporation Apparatus for texturizing continuous filaments
US4462143A (en) * 1982-03-12 1984-07-31 Allied Corporation Method for controlling texture level in a moving cavity texturing process
US4467507A (en) * 1982-03-12 1984-08-28 Allied Corporation Apparatus and method for producing commingled continuous variable texture yarn
US4558497A (en) * 1982-03-12 1985-12-17 Allied Corporation Method for producing commingled continuous variable texture yarn
US4765042A (en) * 1982-03-12 1988-08-23 Allied Corporation Apparatus for texturing continuous filamentary tow
US4930198A (en) * 1982-03-12 1990-06-05 Allied-Signal Inc. Apparatus for texturing continuous yarn
US6492020B1 (en) 1999-06-18 2002-12-10 E. I. Du Pont De Nemours And Company Staple fibers produced by a bulked continuous filament process and fiber clusters made from such fibers
US20080083103A1 (en) * 2006-10-04 2008-04-10 Dietze & Schell Maschinenfabrik Gmbh & Co. Kg. Process and apparatus for the production of artificial grass
US7386925B2 (en) * 2006-10-04 2008-06-17 Dietze & Schell Maschinenfabrik Process and apparatus for the production of artificial grass

Also Published As

Publication number Publication date
JPS4985341A (it) 1974-08-15
IT989942B (it) 1975-06-10
DE2236024A1 (de) 1974-02-07
FR2193894B1 (it) 1977-09-09
FR2193894A1 (it) 1974-02-22
CH559787A5 (it) 1975-03-14
GB1431936A (en) 1976-04-14
NL7308091A (it) 1974-01-24

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