US3638290A - Apparatus for producing nonwoven fabrics - Google Patents

Apparatus for producing nonwoven fabrics Download PDF

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Publication number
US3638290A
US3638290A US69847A US3638290DA US3638290A US 3638290 A US3638290 A US 3638290A US 69847 A US69847 A US 69847A US 3638290D A US3638290D A US 3638290DA US 3638290 A US3638290 A US 3638290A
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United States
Prior art keywords
thread
support
weft
helical
sheet
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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
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US69847A
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English (en)
Inventor
Ralph A Johnson
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.)
Deering Milliken Research Corp
Milliken Research Corp
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Milliken Research Corp
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Classifications

    • 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
    • D04H3/07—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 otherwise than in a plane, e.g. in a tubular way
    • 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
    • D04H3/04—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 in rectilinear paths, e.g. crossing at right angles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat

Definitions

  • Scrim fabrics are widely employed in a variety of end products. Such fabrics are generally constructed of multiple layers of generally parallel yarn threads which are adherred to each other by a suitable bonding agent at the crossover points of the threads. A major end use of these scrim fabrics is as a reinforcement layer in paper, plastic film, and fibrous. batt laminates. The scrim fabrics are also widely used by themselves as netting reinforcements in packaging, as screening, and as backing reinforcement of floor tiles and the like.
  • One apparatus for producing such scrim fabrics comprises a thread-winding mechanism which winds one or more continuous length threads about a pair of spaced support members to form a plurality of generally parallel thread reaches or sections therebetween. These thread sections are advanced in generally spaced parallel relation along the support members to form a weft or transverse thread sheet which is combined with and suitably bonded to one or more warp or longitudinal thread sheets.
  • the thread support members which form the weft thread sheet consist of a pair of rotatable helical members or springs which extend in generally side-by-side, parallel, spaced relation and are supported at one end for rotation.
  • a rotatable thread guide arm through which a continuous thread is passed, is positioned adjacent the supported ends of the helical springs and its outer end describes an are about the ends of the springs to lay a plurality of reaches of the threads therebetween.
  • the springs engage the adjacent looped ends of the reaches and continuously rotate to advance the reaches in generally parallel, spaced relation along the helices of the springs to form the weft thread sheet.
  • a selvage thread is advanced through the central axis of each spring from a suitable supply package so as to be placed within the looped ends of the weft thread reaches. The weft thread reaches approaching the ends of the springs are released thereby and combined with and adhered to one or more warp thread sheets of yarn.
  • the support springs are generally effective to provide the desired weft sheet construction, their operation presents some disadvantages. Since the springs are supported at only one end in order that the weft threads can be released from the open ends of the springs when they are combined with the warp thread sheet, positive positional support of the springs is difficult. For high density weft thread sheet constructions, i.e., a large number of thread picks per inch, it is necessary that the helices of the support springs be closely spaced. In such instances the springs are quite flexible and tend to be readily distorted and pulled inwardly by pressures exerted on the springs by the weft threads. This inward displacement of the unsupported ends of the springs tend to cause irregularities in the weft thread sheet construction.
  • a further object of the present invention is to provide an improved apparatus for producing scrim fabrics having improved weft thread support members for advancing the threads in formation of the weft thread sheet.
  • the above as well as other objects of the present invention are accomplished by providing, as the support members for advancing the weft threads to form the weft thread sheet, rotatable helical members which have a central yarn support element positioned inside the main body of the members in longitudinal alignment of the central axis thereof.
  • the weft threads laid on the support members thus engage and are supported by the centrally disposed support element while the helices of the support members engage and push the threads along the central support element to form the weft thread sheet.
  • the support of the thread reaches will be performed by the more rigid central support element, thereby relieving the helical members of the displacing pressures heretofore exerted thereon by the weft threads.
  • FIG. I is a diagrammatic side view of an apparatus for producing nonwoven scrim fabric which incorporates the novel feature of the present invention
  • FIG. 2 is an enlarged diagrammatic plan view of the weft thread sheet-forming section of the apparatus of FIG. 1;
  • FIG. 2 is an enlarged diagrammatic perspective view of one of the weft thread support members of the weft thread sheetforming section shown in FIG. 2;
  • FIG. 4 is a diagrammatic perspective view of a modified form of the weft yarn support means seen in FIG. 3.
  • the apparatus of the present invention generally includes a weft thread sheet-forming section 10, a warp and weft thread sheet-combining section 12, and a collection section 14.
  • an' indefinite length textile thread 16 is continuously fed from a supply package 18 through a hollow rotatable support shaft 20 and outwardly through a thread winding arm or tube 22.
  • the winding arm 22 is suitably counterbalanced by weight member 24 and the arm and shaft 20 are mounted by suitable means, not shown, for rotation about the axis of the support shaft 20.
  • Each support means 30, 32 includes a helical member or spring 34, 36 and a thread support element or rigid tube 38, 40 positioned inside the helical springs and extending along the central axis thereof.
  • the support means 30, 32 are of substantially identical construction, and details thereof may be best understood by referring to FIG. 3 which is an enlarged perspective view of the thread support means 30.
  • the ends of the helical springs 34, 35 adjacent the outlet of the winding tube 22 are rotatably mounted on a supporting cross arm 42 (FIG.
  • each thread support tube is suitably mounted within the supported end portion of the helical support springs and extends along the central axis thereof.
  • the tubes are hollow and a pair of selvage threads 50, 52 are continuously passed therethrough from supply packages 54, 56 (FIG. 2) so as to be located within the looped ends of the thread reaches 58 forming the weft thread sheet.
  • a pair of warp thread sheets 64, 66 are directed by guide rollers from suitable supply beams (not shown) and are combined at the nip portion of the rollers 60, 62 with the just-formed weft thread sheet.
  • the combined weft and warp thread sheets then are passed in contiguous relation through an adhesive bath 70 and a heating oven 72 where the adhesive coated sheets aredried and/or cured to form the composite scrim fabric product.
  • the scrim fabric thereafter passes over guide rollers and is collected on a collection roll 74.
  • the fabric may be transported through the warp and weft sheet combining section and collected by providing suitable drive means for one or more of the guide rollers shown in FIG. 1.
  • any natural or manmade yarns or threads may be employed in forming the scrim fabrics on the apparatus of the present invention.
  • the threads in the warp and weft thread sheets may be adhered in any convenient manner such as by application of a heat settable or curable adhesive composition as in the embodiment of the present apparatus, or the threads could be adhered by thermal fusion or the application of a hot melt type adhesive composition, in which case the warp and weft sheet combination sections of the apparatus would be suitably modified.
  • the continuous weft thread 16 is passed from supply package 18 through hollow guide arm 22 which rotates to wind the thread about the adjacent ends of the spaced thread support means. Thread 16 is guided by the guides 46,
  • the thread reaches 58 are supported by the rigidly mounted guide tubes and are advanced therealong by the pushing action of the rotating springs. As the reaches 58 approach the open ends of the springs and the end of the support tubes, they engage selvage threads 50, 52 and combine with the warp thread sheet 64, 66 as they pass through nip rolls 60, 62.
  • weft and warp thread sheets then are impregnated with a suitable adhesive, dried and cured, and thereafter collected.
  • the position of the weft thread reaches 58 may be further positioned and controlled during the weft sheet formation by varying the diameter of the support elements 38, 40 along their lengths.
  • the weft threads may be subjected to a stretching action as they pass along the weft sheet-forming section, by providing that each support element 80 is flared over at least a first portion of its length to provide a positive tightening and straightening of the thread reaches before they are released from the weft sheet-forming section.
  • other surface configurations may be provided to the support tubes to arrange the threads in a desired manner during their passage along the support means.
  • helical members 34, 36 have been particularly described and shown as helical springs, they may be otherwise constructed, such as by providing helical slots in rigid cylinders, or the like, to achieve the results desired.
  • rigid support elements 38, 40 are particularly described and shown as hollow tubes to facilitate passage of the selvage threads through the helical springs, they may be otherwise constructed, such as solid rods, or the like, and other provisions made for the selvage thread passage.
  • the central support tube of the thread support means provides improved control and positional uniformity of the thread reaches during the formation of the weft thread sheets.
  • the thread support elements could be mounted in a bearing assembly to permit the elements to remain stationary during rotation of the helical members.
  • each of said thread support means comprises a helical member, means supporting said member for rotation about its central axis, a thread support element positioned inside said helical member and extending along the central axis thereof for reception and support of loop ends of thread laid thereon by said laying means, and wherein said means for advancing the reaches al on said thread support means includes means for rotating said elical members to advance thread placed on said thread support elements in spaced relation along said elements to form the weft thread sheet.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)
US69847A 1970-09-04 1970-09-04 Apparatus for producing nonwoven fabrics Expired - Lifetime US3638290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6984770A 1970-09-04 1970-09-04

Publications (1)

Publication Number Publication Date
US3638290A true US3638290A (en) 1972-02-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
US69847A Expired - Lifetime US3638290A (en) 1970-09-04 1970-09-04 Apparatus for producing nonwoven fabrics

Country Status (16)

Country Link
US (1) US3638290A (xx)
JP (1) JPS506586B1 (xx)
AT (1) AT320574B (xx)
AU (1) AU458253B2 (xx)
BE (1) BE772183A (xx)
BR (1) BR7105823D0 (xx)
CA (1) CA948976A (xx)
CH (1) CH534240A (xx)
DE (1) DE7133301U (xx)
ES (1) ES394785A1 (xx)
FI (1) FI53465C (xx)
FR (1) FR2105237B1 (xx)
GB (1) GB1319205A (xx)
LU (1) LU63784A1 (xx)
NL (1) NL152033B (xx)
ZA (1) ZA715922B (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885279A (en) * 1973-06-18 1975-05-27 Deering Milliken Res Corp Yarn feed guide arms
US20040076790A1 (en) * 2002-10-16 2004-04-22 Wylie Grant E. Textile backed pile article and method for making same
WO2015018819A1 (de) * 2013-08-09 2015-02-12 ontec automation GmbH Vorrichtung und verfahren zum herstellen netzartiger fadengelege sowie netzartiges fadengelege

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8413092D0 (en) * 1984-05-22 1984-06-27 Apsley Metals Ltd Tyre reinforcement fabrics
GB2327434A (en) * 1997-07-23 1999-01-27 Holroyd Associates Ltd Apparatus for making fabric for tyres
DE102012020624A1 (de) * 2012-10-19 2014-04-24 Wolfgang Hoeck Führungsvorrichtung zum Führen einer Mehrzahl von Fäden zur Herstellung eines Faserverbundbauteils
FR3023303B1 (fr) * 2014-07-02 2019-04-26 Porcher Industries Procede de fabrication de grille textile et installation et materiels y relatifs
CN104674460B (zh) * 2015-03-09 2016-09-28 常州纽兰德复合材料有限公司 旋转式铺纬法制造非织造网格复合无纺布的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895293A (en) * 1933-01-24 morton
DE1435080A1 (de) * 1959-05-11 1968-10-24 Bobkowicz E Nicht gewebte Stoffbahn sowie Verfahren und Vorrichtung zum kontinuierlichen Herstellen derselben
US3422511A (en) * 1965-10-20 1969-01-21 Chavanoz Moulinage Retorderie Method and apparatus for making a non-woven fabric
DE1635610A1 (de) * 1962-05-29 1969-08-21 Bruno Romanin Verfahren und Vorrichtung zur Herstellung diagonaler Netzgewebestrukturen
US3505712A (en) * 1964-01-28 1970-04-14 Chavanoz Moulinage Retorderie Apparatus for forming flat weft loops for a nonwoven netting

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895293A (en) * 1933-01-24 morton
DE1435080A1 (de) * 1959-05-11 1968-10-24 Bobkowicz E Nicht gewebte Stoffbahn sowie Verfahren und Vorrichtung zum kontinuierlichen Herstellen derselben
DE1635610A1 (de) * 1962-05-29 1969-08-21 Bruno Romanin Verfahren und Vorrichtung zur Herstellung diagonaler Netzgewebestrukturen
US3505712A (en) * 1964-01-28 1970-04-14 Chavanoz Moulinage Retorderie Apparatus for forming flat weft loops for a nonwoven netting
US3422511A (en) * 1965-10-20 1969-01-21 Chavanoz Moulinage Retorderie Method and apparatus for making a non-woven fabric

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885279A (en) * 1973-06-18 1975-05-27 Deering Milliken Res Corp Yarn feed guide arms
US20040076790A1 (en) * 2002-10-16 2004-04-22 Wylie Grant E. Textile backed pile article and method for making same
US7329450B2 (en) 2002-10-16 2008-02-12 Ultrafab, Inc. Textile backed pile article and method for making same
US20080093007A1 (en) * 2002-10-16 2008-04-24 Wylie Grant E Textile backed pile article and method for making same
US7896995B2 (en) 2002-10-16 2011-03-01 Ultrafab, Inc. Textile backed pile article and method for making same
WO2015018819A1 (de) * 2013-08-09 2015-02-12 ontec automation GmbH Vorrichtung und verfahren zum herstellen netzartiger fadengelege sowie netzartiges fadengelege

Also Published As

Publication number Publication date
NL152033B (nl) 1977-01-17
FI53465B (xx) 1978-01-31
ZA715922B (en) 1973-03-28
JPS506586B1 (xx) 1975-03-15
ES394785A1 (es) 1974-03-01
CH534240A (fr) 1973-02-28
BR7105823D0 (pt) 1973-04-10
GB1319205A (en) 1973-06-06
FI53465C (fi) 1978-05-10
AU3287671A (en) 1973-03-08
CA948976A (en) 1974-06-11
AU458253B2 (en) 1975-02-20
LU63784A1 (xx) 1972-04-05
NL7112178A (xx) 1972-03-07
FR2105237B1 (xx) 1975-07-11
FR2105237A1 (xx) 1972-04-28
AT320574B (de) 1975-02-25
DE7133301U (de) 1972-05-31
BE772183A (fr) 1972-01-17

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