EP0026777B1 - Method for distributing fibers in a layer - Google Patents

Method for distributing fibers in a layer Download PDF

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Publication number
EP0026777B1
EP0026777B1 EP80900685A EP80900685A EP0026777B1 EP 0026777 B1 EP0026777 B1 EP 0026777B1 EP 80900685 A EP80900685 A EP 80900685A EP 80900685 A EP80900685 A EP 80900685A EP 0026777 B1 EP0026777 B1 EP 0026777B1
Authority
EP
European Patent Office
Prior art keywords
layer
fibers
sound field
fiber layer
sound
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
Application number
EP80900685A
Other languages
German (de)
French (fr)
Other versions
EP0026777A1 (en
Inventor
Mats Anders Olsson
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.)
Individual
Original Assignee
Individual
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 AT80900685T priority Critical patent/ATE5154T1/en
Application filed by Individual filed Critical Individual
Publication of EP0026777A1 publication Critical patent/EP0026777A1/en
Application granted granted Critical
Publication of EP0026777B1 publication Critical patent/EP0026777B1/en
Expired legal-status Critical Current

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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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/732—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged by fluid current, e.g. air-lay

Definitions

  • the invention relates to a method for distributing fibers in a layer by exposing the fibers to a sound field.
  • GB-A-1 092 052 describes a method of quilting fusible fibers by treating such fibers with an ultrasonic beam, the fibers being interconnected at the contact areas by a fusing action caused by the ultrasonic beam.
  • the ultrasonic beam is emitted from a head which is pressed against the fibers.
  • DE-Al-2 715 747 relates to the distribution of a fiber layer by exposing the layer to ultrasonic vibration between opposite surfaces of two rigid elements which are pressed against each other.
  • the object of the invention is to provide a method of the art referred to above for distributing a filting fiber in a simple, cheap and rapid manner.
  • the distribution of the fibers is achieved by exposing the layer to a low-frequency air-borne sound field.
  • the fibers 1 are laid down onto an air permeable support 2 which is arranged in front of a sound emitter 4 located in a resonator 3.
  • the resonator 3 comprises a Helm- holtz resonator and the sound emitter 4 comprises an electric loud speaker of the diaphragm type, which is mounted in a wall of the resonator.
  • the layer of fibers is exposed to low-frequency air-borne sound from the sound emitter 4, and by the exposure to sound the fiber layer is fluidized and spreads uniformly over the support a is indicated by a dash line 5.
  • the fibers 1 are of such character that they can be entangled with each other, or if the fibers during the fluidization are sprayed with an adhesive, there will be obtained in this way a bound fiber mat of uniform thickness.
  • the exposure of the fiber layer to sound can also take place from the upper side of the layer.
  • an accumulation of the fibers at one or more places as desired can be obtained by controlling the propagation of the sound field such that different portions of the fiber layer are exposed to sound fields of different strengths.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Multicomponent Fibers (AREA)
  • Inorganic Fibers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

Method for distributing fibers (1) in a layer, wherein the distribution is obtained by exposing the fiber layer (1) to a low-frequency airborne sound field.

Description

  • The invention relates to a method for distributing fibers in a layer by exposing the fibers to a sound field.
  • It is previously known to treat fibers by exposing them to a sound field.
  • GB-A-1 092 052 describes a method of quilting fusible fibers by treating such fibers with an ultrasonic beam, the fibers being interconnected at the contact areas by a fusing action caused by the ultrasonic beam. The ultrasonic beam is emitted from a head which is pressed against the fibers.
  • DE-Al-2 715 747 relates to the distribution of a fiber layer by exposing the layer to ultrasonic vibration between opposite surfaces of two rigid elements which are pressed against each other.
  • The object of the invention is to provide a method of the art referred to above for distributing a filting fiber in a simple, cheap and rapid manner.
  • According to the invention, the distribution of the fibers is achieved by exposing the layer to a low-frequency air-borne sound field.
  • In order to illustrate the invention this will be described in more detail below, reference being made to the accompanying drawing, which shows a diagrammatic vertical cross-sectional view of an apparatus for practising the method.
  • The fibers 1 are laid down onto an air permeable support 2 which is arranged in front of a sound emitter 4 located in a resonator 3. In the present case the resonator 3 comprises a Helm- holtz resonator and the sound emitter 4 comprises an electric loud speaker of the diaphragm type, which is mounted in a wall of the resonator. The layer of fibers is exposed to low-frequency air-borne sound from the sound emitter 4, and by the exposure to sound the fiber layer is fluidized and spreads uniformly over the support a is indicated by a dash line 5.
  • If the fibers 1 are of such character that they can be entangled with each other, or if the fibers during the fluidization are sprayed with an adhesive, there will be obtained in this way a bound fiber mat of uniform thickness.
  • The exposure of the fiber layer to sound can also take place from the upper side of the layer.
  • If varying thickness of the layer is desired so that a definite profile is imparted to the layer as indicated by a dash and dot line 6, an accumulation of the fibers at one or more places as desired can be obtained by controlling the propagation of the sound field such that different portions of the fiber layer are exposed to sound fields of different strengths.

Claims (5)

1. Method for distributing fibers (1) in a layer by exposing the fibers to a sound field, characterized in that the fiber layer (1) is exposed to a low-frequency air-borne sound field.
2. Method according to claim 1, characterized in that the sound field is emitted from a resonator (3).
3. Method according to claim 1 or 2, characterized in that the fiber layer (1) is exposed to the sound field from below on an air permeable support (2).
4. Method according to any of claims 1 to 3, characterized in that the propagation of the sound field is controlled to actuate different portions of the fiber layer (1) with sound fields of different strengths.
5. Method according to any of claims 1 to 4 characterized in that the fiber layer (1) is sprayed with an adhesive when being exposed to the sound field.
EP80900685A 1979-04-05 1980-10-23 Method for distributing fibers in a layer Expired EP0026777B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80900685T ATE5154T1 (en) 1979-04-05 1980-04-03 METHOD OF DISTRIBUTING FIBERS IN A COATING.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7903028 1979-04-05
SE7903028A SE432788B (en) 1979-04-05 1979-04-05 SET FOR DISTRIBUTION OF FIBERS IN ONE LAYER

Publications (2)

Publication Number Publication Date
EP0026777A1 EP0026777A1 (en) 1981-04-15
EP0026777B1 true EP0026777B1 (en) 1983-10-26

Family

ID=20337736

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80900685A Expired EP0026777B1 (en) 1979-04-05 1980-10-23 Method for distributing fibers in a layer

Country Status (6)

Country Link
EP (1) EP0026777B1 (en)
JP (1) JPS56500379A (en)
AT (1) ATE5154T1 (en)
DE (1) DE3065409D1 (en)
SE (1) SE432788B (en)
WO (1) WO1980002165A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1092052A (en) * 1965-11-13 1967-11-22 Ici Ltd Non-woven fabrics
BE793479A (en) * 1972-06-20 1973-04-16 Rudloff Bernard DEVICE FOR OPENING AND INDIVIDUALIZING TEXTILE OR SIMILAR FIBERS
GB1558196A (en) * 1976-04-08 1979-12-19 Ici Ltd Method of reordering fibres ina web

Also Published As

Publication number Publication date
JPS56500379A (en) 1981-03-26
DE3065409D1 (en) 1983-12-01
EP0026777A1 (en) 1981-04-15
SE7903028L (en) 1980-10-06
ATE5154T1 (en) 1983-11-15
WO1980002165A1 (en) 1980-10-16
SE432788B (en) 1984-04-16

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