US3460731A - Filament deflecting apparatus - Google Patents

Filament deflecting apparatus Download PDF

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Publication number
US3460731A
US3460731A US651794A US65179467A US3460731A US 3460731 A US3460731 A US 3460731A US 651794 A US651794 A US 651794A US 65179467 A US65179467 A US 65179467A US 3460731 A US3460731 A US 3460731A
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US
United States
Prior art keywords
jet
filament
slot
diffuser
passage
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
US651794A
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English (en)
Inventor
Henry Mccardell Troth Jr
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US651802A priority Critical patent/US3477103A/en
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to US651794A priority patent/US3460731A/en
Priority to NL686809574A priority patent/NL144681B/xx
Priority to DE1760812A priority patent/DE1760812C3/de
Priority to LU56425A priority patent/LU56425A1/xx
Priority to BE48295A priority patent/BE717664A/xx
Priority to CH1010368A priority patent/CH480480A/de
Priority to GB32524/68A priority patent/GB1244753A/en
Priority to FR158317A priority patent/FR1585226A/fr
Application granted granted Critical
Publication of US3460731A publication Critical patent/US3460731A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/75—Processes of uniting two or more fibers

Definitions

  • This invention relates to modified filament forwarding jet devices and in particular to filament forwarding jet devices suitable for controlling the direction of the jet output by periodic deflection with secondary fluid streams.
  • Jet devices have been used in the textile industry for many years to effect drawing, texturing, stripping, annealing, crimping, bulking, interlacing, etc. of synthetic yarns. These devices usually have had round cross-sections but recently jet devices with rectangular or slot shaped crosssections have been developed. Slot jets are particularly useful when used to strip filaments from draw rolls since they conform closely to the shape of the ribbon of filaments coming off the draw roll.
  • Nonwoven webs produced according to the above-described process contain filaments which are disposed in a random loopy configuration. When bonded, non-woven fabrics with physical properties independent of direction are obtained.
  • One reason for controlling the direction of the jet output is to provide for more uniform distribution of fibers across a laydown receiver.
  • Another reason for controlling the direction of the jet output is to introduce fiber directionality into the non woven web. Fiber directionality is especially useful in nonwoven fabrics to be used as backing for tufted carpets where resistance to stretch in the machine direction and resistance to neclodown in the cross machine direction after tufting are important.
  • Uniform control of slot jet output is a necessity during preparation of nonwoven webs.
  • the output of filament forwarding slot jets provides nonwoven webs of nonuniform fabric weight and imperfect fiber alignment when such alignment is desired. It is also desirable to control the output of filament forwarding slot jets used in the preparation of nonwoven webs in such a manner so as to minimize fiber entanglement and bunching.
  • the principal objective of this invention is to provide an apparatus for controlling the direction of the output of a filament forwarding slot jet which minimizes filament entanglement and bunching.
  • This objective is accomplished by providing a housing atttached to the outlet end of a filament forwarding jet.
  • the housing defines a chamber with a discharge slot opening transversely to and adjacent the outlet end of the jet.
  • a source of pulsating pressurized fluid is connected to the chamber and is discharged from the slot for deflecting the filaments emerging from the jet.
  • the slot has a Width of from between .005 inch (.012 cm.) and .080 inch (.203 cm.) and presents a fluid discharge angle of from about 60 to with the axis of the passage through the jet.
  • FIGURE 1 is a schematic isometric view of the modified jet of this invention showing its use in the production of a nonwoven fabric.
  • FIG. 2 is a cross-sectional end view of the modified jet of this invention.
  • FIG. 3 is a bottom view of FIG. 2.
  • FIG. 1 a ribbon of electrostatically charged continuous filament fibers 10 are forwarded by means of slot jet 12 through a diffuser 36 toward a flexible pervious belt 14, covering a suction means (not shown).
  • the tension on the filaments is released at the outlet end 16 of the diffuser 36, the filaments are deflected alternately by opposed air streams issuing from slots 18, 20 formed by the end 16 of the diffuser 36 and housings 22, 24 attached to the opposite longitudinal sides of the outlet end 16 of diffuser 36.
  • Chambers 26, 28 defined by housings 22, 24 respectively, are connected to a rotary valve 30 supplied with compressed air at inlet 31 by means of conduits 32, 34.
  • slot jet 12 includes an entrance slot 13 projecting into etfuser throat 15 and a generally rectangular filament passage 17.
  • Plenum 19 is supplied with pressurized fluid through ports 21, 23.
  • a diffuser section 36 is attached to the outlet end 38 of jet 12 and defines a filament passage 40 of rectangular crosssection in alignment with passage 17 of the jet.
  • the jet shown schematically in FIG. 2 is similar to the slot jets described in Cope et al. US. 3,302,237 modified with the diffuser section 36 attached to the outlet end of the jet.
  • the end 39- of the diffuser 36 converges toward filament passage 40 while housing 24 is formed to present an interior surface 41 complimental to and spaced from end 39 thus forming slot 18 'which is disposed toward and runs lengthwise of the passage 40.
  • Slot 20 is formed in the same fashion and is defined by complemental surfaces 37, 43.
  • pressurized fluid e.g. compressed air
  • rotary valve 30 which is rotated at a constant speed and alternately connects conduits 32, 34 to the source of compressed air.
  • the resulting pulses of air are fed to chambers 26, 28 where they discharge from slots 18, 20 at an angle 6, and impinge against the ribbon of filaments 10 alternately deflecting them in a uniform pattern.
  • the deflection slots 18, 20 should be arranged so that the deflecting streams impinge on the fiber stream issuing from outlet 40 of the diffuser at an angle approaching 90.
  • the angle should be sufficiently less to avoid any coanda effect that might be caused by the configuration of housing 22 below the diffuser outlet which would tend to hold the filaments in the fully deflected position.
  • angles 6 of from 60 to 90 are operable, a useful compromise is to use an angle 9 of 70. At this angle any aerodynamic effects caused by the shape of the bottom part of the housing 22 are minimized while still maintaining reasonable efficiency in the amount of deflection air consumed.
  • the deflection slots 18, 20 should be sized to achieve the desired deflection at moderate chamber pressure, e.g., 1 to psi
  • the preferred slot width is from .015 to .020 inch (.038 to .050 cm.) although slot widths of from about .005 to .080 inch (.012 to .202 cm.) are operable.
  • the length of the chambers 26, 28 and slots 18, 20 should correspond to the lengthwise dimension of the diffuser outlet 40.
  • the exit gap A (FIGS. 2, 3) between the outlet end of the diffuser and housing 22 is preferably between .05 to .50 inch (.12 to 1.2 cm.).
  • the deflection housings 22, 24 be attached to a difluser section which is in turn attached to the outlet of a slot jet it is not necessary to do so and the deflection housing may be attached directly to the outlet end of a slot jet as disclosed by Cope et al. without a diffuser.
  • the outlet end of the Cope et al. jet would be modified to converge toward the passage to form in cooperation with housings 22, 24, the angularly disposed slots.
  • the deflection device of this invention be positioned on both sides of the jet or difluser outlet. Control of the jet or diffuser output can be obtained through the use of a single housing 22 on one side of the jet or diffuser. It is apparent that many changes and modifications may be made to the disclosed apparatus without departing from the spirit of the present invention which is intended to be limited only by the scope of the appended claims.
  • a device for transversely deflecting filaments emerging from the passage at said outlet end comprising:
  • a device for alternately deflecting filaments emerging from the outlet of the diffuser comprising:

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
US651794A 1967-07-07 1967-07-07 Filament deflecting apparatus Expired - Lifetime US3460731A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US651794A US3460731A (en) 1967-07-07 1967-07-07 Filament deflecting apparatus
US651802A US3477103A (en) 1967-07-07 1967-07-07 Preparation of nonwoven web structure
DE1760812A DE1760812C3 (de) 1967-07-07 1968-07-05 Verfahren und Vorrichtung zur Herstellung eines als Grundlage fur Tuftingteppiche dienenden Vlieses
LU56425A LU56425A1 (de) 1967-07-07 1968-07-05
NL686809574A NL144681B (nl) 1967-07-07 1968-07-05 Werkwijze en inrichting voor het vervaardigen van een ononderbroken, niet-geweven baan van continu-filamenten.
BE48295A BE717664A (de) 1967-07-07 1968-07-05
CH1010368A CH480480A (de) 1967-07-07 1968-07-05 Verfahren und Vorrichtung zur Herstellung von einheitlichen Nonwovens
GB32524/68A GB1244753A (en) 1967-07-07 1968-07-08 Non woven fabrics
FR158317A FR1585226A (de) 1967-07-07 1968-07-08

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US65179367A 1967-07-07 1967-07-07
US651794A US3460731A (en) 1967-07-07 1967-07-07 Filament deflecting apparatus
US651802A US3477103A (en) 1967-07-07 1967-07-07 Preparation of nonwoven web structure

Publications (1)

Publication Number Publication Date
US3460731A true US3460731A (en) 1969-08-12

Family

ID=27417868

Family Applications (2)

Application Number Title Priority Date Filing Date
US651794A Expired - Lifetime US3460731A (en) 1967-07-07 1967-07-07 Filament deflecting apparatus
US651802A Expired - Lifetime US3477103A (en) 1967-07-07 1967-07-07 Preparation of nonwoven web structure

Family Applications After (1)

Application Number Title Priority Date Filing Date
US651802A Expired - Lifetime US3477103A (en) 1967-07-07 1967-07-07 Preparation of nonwoven web structure

Country Status (8)

Country Link
US (2) US3460731A (de)
BE (1) BE717664A (de)
CH (1) CH480480A (de)
DE (1) DE1760812C3 (de)
FR (1) FR1585226A (de)
GB (1) GB1244753A (de)
LU (1) LU56425A1 (de)
NL (1) NL144681B (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3558029A (en) * 1968-06-07 1971-01-26 Nordiska Maskinfilt Ab Machine for crosswise deposition of carded webs and a carded web manufactured by means of the machine
US3660868A (en) * 1968-05-29 1972-05-09 Ici Ltd Manufacture of non-woven fibrous webs
DE2525819A1 (de) * 1974-06-10 1976-01-02 Rhone Poulenc Textile Vrfahren zum herstellen von vliesen aus endlosgarnen und vorrichtung zum durchfuehren des verfahrens
US4099296A (en) * 1975-09-26 1978-07-11 Aktiebolaget Svenska Flaktfabriken Method and apparatus for forming a material web
US4217159A (en) * 1977-10-26 1980-08-12 Imperial Chemical Industries Limited Laying oriented fibrous webs
US4276106A (en) * 1979-08-15 1981-06-30 Imperial Chemical Industries Limited Laying oriented fibrous webs
US4285452A (en) * 1979-02-26 1981-08-25 Crown Zellerbach Corporation System and method for dispersing filaments
US5439364A (en) * 1992-10-26 1995-08-08 Karl Fischer Industrieanlagen Gmbh Apparatus for delivering and depositing continuous filaments by means of aerodynamic forces
US9561601B2 (en) 2012-10-04 2017-02-07 Saint-Gobain Isover Apparatus and method for manufacturing a thermal and/or acoustic insulation product

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3991244A (en) * 1974-06-24 1976-11-09 E. I. Du Pont De Nemours And Company Nonwoven polypropylene fabric
NL7909298A (nl) * 1979-12-22 1981-07-16 Stamicarbon Werkwijze voor het vervaardigen van voorwerpen uit watergehard materiaal.
DE3242539C2 (de) * 1982-11-18 1984-09-20 Spinnbau GmbH, 2820 Bremen Verfahren und Vorrichtung zum Herstellen eines Flors oder Vlieses
FI831344L (fi) * 1983-04-20 1984-10-21 Yhtyneet Paperitehtaat Oy Fiberfoerdelningsfoerfarande och - anordning foer en torrpappermaskin.
US4778642A (en) * 1986-06-17 1988-10-18 Robotic Vision Systems, Inc. Sealant bead profile control
ES2041081T3 (es) * 1989-11-20 1993-11-01 E.I. Du Pont De Nemours And Company Encofrado para hormigon modelado.
US5123983A (en) * 1990-08-24 1992-06-23 E. I. Du Pont De Nemours And Company Gas management system for closely-spaced laydown jets
US5124102A (en) * 1990-12-11 1992-06-23 E. I. Du Pont De Nemours And Company Fabric useful as a concrete form liner
US5206981A (en) * 1991-10-25 1993-05-04 E. I. Du Pont De Nemours And Company Fabric tensioning frame
US5247730A (en) * 1991-10-25 1993-09-28 E. I. Du Pont De Nemours And Company Method for attaching and bidirectionally tensioning a porous fabric over a form support
US5302099A (en) * 1992-09-28 1994-04-12 E. I. Du Pont De Nemours And Company Laminated fabric useful as a concrete form liner
ES2132656T3 (es) * 1994-05-02 1999-08-16 Owens Corning Fiberglass Corp Procedimiento de formacion de pacas de lana utilizando tambores giratorios de alta velocidad y distribucion de sonido de baja frecuencia.
US5595585A (en) * 1994-05-02 1997-01-21 Owens Corning Fiberglas Technology, Inc. Low frequency sound distribution of rotary fiberizer veils
DE50100381D1 (de) * 2000-07-25 2003-08-21 Freudenberg Carl Kg Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses
EP1277867A1 (de) 2001-07-16 2003-01-22 Carl Freudenberg KG Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses
DE10333259A1 (de) * 2003-05-14 2005-03-03 Yao-Chang Lin Verfahren und Vorrichtung zur Herstellung eines Vliesstoffes
US7504060B2 (en) * 2003-10-16 2009-03-17 Kimberly-Clark Worldwide, Inc. Method and apparatus for the production of nonwoven web materials

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859506A (en) * 1955-04-21 1958-11-11 Owens Corning Fiberglass Corp Apparatus for producing a filamentary mat material
US2994938A (en) * 1959-06-30 1961-08-08 Du Pont Yarn-treating apparatus
US3281913A (en) * 1964-08-10 1966-11-01 Eastman Kodak Co Apparatus and method for handling yarn bundles
US3317296A (en) * 1962-12-26 1967-05-02 Pittsburgh Plate Glass Co Process of making fibrous product
US3346682A (en) * 1962-03-16 1967-10-10 Du Pont Method for making a filtering medium from plexifilamentary material
US3357074A (en) * 1965-12-28 1967-12-12 Celanese Corp Apparatus for the production of fluid entangled non-woven fabrics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US363217A (en) * 1887-05-17 dolge
BE548088A (de) * 1955-05-25 1900-01-01
US3134145A (en) * 1962-01-26 1964-05-26 Owens Corning Fiberglass Corp Apparatus for forming fibrous blankets
US3192572A (en) * 1962-06-06 1965-07-06 Gordon George Blair Fibrous web feeding and flow rate decelerating method and apparatus
US3319309A (en) * 1964-06-04 1967-05-16 Du Pont Charged web collecting apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859506A (en) * 1955-04-21 1958-11-11 Owens Corning Fiberglass Corp Apparatus for producing a filamentary mat material
US2994938A (en) * 1959-06-30 1961-08-08 Du Pont Yarn-treating apparatus
US3346682A (en) * 1962-03-16 1967-10-10 Du Pont Method for making a filtering medium from plexifilamentary material
US3317296A (en) * 1962-12-26 1967-05-02 Pittsburgh Plate Glass Co Process of making fibrous product
US3281913A (en) * 1964-08-10 1966-11-01 Eastman Kodak Co Apparatus and method for handling yarn bundles
US3357074A (en) * 1965-12-28 1967-12-12 Celanese Corp Apparatus for the production of fluid entangled non-woven fabrics

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660868A (en) * 1968-05-29 1972-05-09 Ici Ltd Manufacture of non-woven fibrous webs
US3558029A (en) * 1968-06-07 1971-01-26 Nordiska Maskinfilt Ab Machine for crosswise deposition of carded webs and a carded web manufactured by means of the machine
DE2525819A1 (de) * 1974-06-10 1976-01-02 Rhone Poulenc Textile Vrfahren zum herstellen von vliesen aus endlosgarnen und vorrichtung zum durchfuehren des verfahrens
US4099296A (en) * 1975-09-26 1978-07-11 Aktiebolaget Svenska Flaktfabriken Method and apparatus for forming a material web
US4217159A (en) * 1977-10-26 1980-08-12 Imperial Chemical Industries Limited Laying oriented fibrous webs
US4285452A (en) * 1979-02-26 1981-08-25 Crown Zellerbach Corporation System and method for dispersing filaments
US4276106A (en) * 1979-08-15 1981-06-30 Imperial Chemical Industries Limited Laying oriented fibrous webs
US5439364A (en) * 1992-10-26 1995-08-08 Karl Fischer Industrieanlagen Gmbh Apparatus for delivering and depositing continuous filaments by means of aerodynamic forces
US9561601B2 (en) 2012-10-04 2017-02-07 Saint-Gobain Isover Apparatus and method for manufacturing a thermal and/or acoustic insulation product

Also Published As

Publication number Publication date
US3477103A (en) 1969-11-11
FR1585226A (de) 1970-01-16
LU56425A1 (de) 1970-01-15
BE717664A (de) 1969-01-06
DE1760812B2 (de) 1974-07-04
GB1244753A (en) 1971-09-02
DE1760812C3 (de) 1980-08-28
CH480480A (de) 1969-10-31
DE1760812A1 (de) 1972-03-09
NL6809574A (de) 1969-01-09
NL144681B (nl) 1975-01-15

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