GB2404201A - Producing non-woven webs by laying continuous filaments onto a conveyor using a swinging air jet device - Google Patents
Producing non-woven webs by laying continuous filaments onto a conveyor using a swinging air jet device Download PDFInfo
- Publication number
- GB2404201A GB2404201A GB0316928A GB0316928A GB2404201A GB 2404201 A GB2404201 A GB 2404201A GB 0316928 A GB0316928 A GB 0316928A GB 0316928 A GB0316928 A GB 0316928A GB 2404201 A GB2404201 A GB 2404201A
- Authority
- GB
- United Kingdom
- Prior art keywords
- fiber strands
- air jet
- swinging
- jet device
- spinneret
- 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.)
- Granted
Links
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
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
-
- 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
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- 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
- D04H3/03—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 at random
- D04H3/033—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 at random reorientation immediately after yarn or filament formation
-
- 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
- D04H3/05—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 another pattern, e.g. zig-zag, sinusoidal
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
A method of producing a non-woven fabric 8 comprises the steps of forming fiber strands 81 from a fiber forming resin through a spinneret 4, drawing the fiber strands 81 from the spinneret 4 by using a drawing air jet device 5, forming the fiber strands 81 on a conveyor screen belt 7 and advancing the same along a longitudinal direction, and using a swinging air jet device 6 to swing the fiber strands 81 to-and-fro downstream of the drawing air jet device 5, upstream of the conveyor screen belt 7 and in transverse directions which are transverse to the longitudinal direction. The fiber strands 81 are formed into wavy patterns 811 which overlap and interlace each other in the transverse directions. An apparatus for carrying out the method is also disclosed.
Description
240420 1
METHOD AND APPARATUS FOR MAKING A NON-WOVEN FABRIC
The invention relates to a non-woven fabric, more particularly to a method end apparatus for the production of a non-woven fabric.
Referring to Figure 1, a typical non-woven fabric 1 generally has fiber strands 11 which extend longitudinally such that it has insufficient bonding force along a transverse direction. Although the non-woven fabric 1 can endure longitudinal pulling forces and possesses highlongitudinaltensile strength, itisliabletobreakortearwhensubjectedLotransverse pulling forces.
Referring to Figure 2, in order to alleviate such a problem, the prior art has suggested an apparatus and a method, in which an air jet 32 is disposed close to fiber strands 31, which are extruded from a spinneret 2, and flows at a rate that is greater than the rate of extruding the fiber strands 31. The air jet 32 causes the fiber strands 31 to swing randomly so that the fiber strands 31 are bent and interlace each other, thereby increasing the bonding force among the fiber strands 31. However, although the flow rate of the air jet 32 must be greater than that of the fiber strands 31 so as to bend or turn the same, the flow rate must not be veryhigh.Otherwise, the linear air jet 32 will provide a drawing force to pull the fiber strands 31 downward, adversely effecting the turning or bending of the fiber i strands 31. In addition, since the extruding rate of the fiber strands 31 varies depending on the material thereof, it is difficult to precisely control the rates of the air jet 32 and the fiber strands 31.
Therefore, the object of the present invention is to provide an apparatus and a method for making a non-woven fabric which has anincreasedLensile strength along a transverse direction.
According to one aspect of this invention, a method of producing a nonwoven fabric comprises the steps of forming fiber strands from a fiber forming resin through aspinneret,drawingthefiberstrandsfromthespinneret by using a drawing air jet device, forming the fiber strands on a conveyor screen belt end advancing the same along a longitudinal direction, and using a swinging air jet device to swing the fiber strands to-and-fro downstream of the drawing air jet device, upstream of the conveyor screen belt and in transverse directions which are transverse tothelongitudinal direction.The fiber strands are formed into wavy patterns, which overlap and interlace each other in the transverse directions.
According to another aspect of this invention, an apparatus for making a non-woven fabric comprises a spinneret for forming fiber strands, a drawing air jet device disposed downward of the spinneret for drawing the fiber strands downwardly, a conveyor screen belt 1 disposed downstream of the drawing air jet device for forming and advancing the fiber strandsinalongitudinal direction, and a swinging air jet device disposed downstream of the drawing air jet device and upstream S of the conveyor screen belt for swinging the fiber strands to-and-fro in transverse directions which are transverse to the longitudinal direction. The fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions.
Other features and advantages of the present invention willbecomeapparentin the following detailed description of the preferred embodiment with reference to the accompanying drawings, of which: Figurelis a perspective view ofa typicaloon-woven fabric; Figure 2 is a perspective view to illustrate a conventional method for making a nonwoven fabric; Figure 3 is a fragmentary perspective view of an apparatus for making a non-woven fabric according to the present invention; Figure 4 is a fragmentary schematic view of the apparatus of the present invention; Figure 5 is a schematic side view of the apparatus of the present invention, illustrating the directions of air currents generated thereby; Figure 6 is a perspective view of a swinging air jet device of the apparatus of the present invention; Figures7 and Sillustrate how a motor drives swinging louvers to swing to-and-fro transversely; Figure 9 is a schematic view, illustrating fiber strands formed into wavy patterns which overlap and S interface each other through the apparatus of the present invention) and Figure 10 is a schematic view, illustrating an alternative implementation of the apparatus of the present invention.
Referring to Figures3, Hands, a method of producing a non-woven fabric embodying the present invention is conducted through an apparatus (A) which is shown to comprise a spinneret 4, a drawing air jet device 5, a swinging air jet device 6, and a conveyor screen belt l5 7.
The spinneret 4 has a plurality of extrusion holes 41 which extend vertically for forming and extruding fiber strands 81.
The drawing air jet device 5 is disposed downstream of the spinneret 4, and produces high pressure air currents 53 (see Figure 4) which flow downwardly below and at two sides of the spinneret 4 through opposite air nozzle units 52 so as to draw the fiber strands 81 downwardly.
The swinging air jet device 6 is disposed downstream of the drawing air jet device 5 and upstream of the conveyor screen belt 7, and includes a pair of opposite air nozzle units 61, which are respectively arranged below the air nozzle units 52 of the drawing air jet device 5 and each of which includes a nozzle outlet 611 that opens downwardly. A plurality of swinging louvers 62 are disposed at the nozzle outlet 611 of each nozzle unit 61.
As shown in Figures 6, 7 and 8, the swinging louvers 62 are arranged in a row along a direction transverse to the longitudinal direction of the conveyor screen lo belt 7, and are mounted pivotally on a connecting bar 64 through pivot pins 641. A motor 65 is provided to drive the louvers 62 to swing transversely so as to produce swinging air currents 63 (see Figure 5). The motor 65 includes a driving shaft 651 and a rotary disc IS 652 connected to the driving shaft 651. A link plate 66 has one end connected pivotally to the rotary disc 652throughapivotmember661,andanotherendconnected to a drive bar 67 through another pivot member 662. The drive bar67is connected pivotally toallofthelouvers 62.
The conveyor screen belt 7 is disposed downstream of the drawing and swinging air jet devices 5, 6 for forming and advancing the fiber strands 81 in a longitudinal direction. Suction air currents 51 are provided below the conveyor screen belt 7. The conveyor screen belt 7 has a support face 71 facing toward the spinneret 4 and extending horizontally.
When the motor 65 of the swinging air jet device 6 is actuated, the rotary disc 652 moves the louvers 62 to-and-frothroughthelinkplate66, asshownin Figures 7 and 8. The louvers 62, in turn, produce swinging air currents 63, as shown in Figure 5. The swinging air currents 63 cause the fiber strands 81 to swing to-and-fro in transverse directions, which are transverse tothelongitudinaldirectionof the conveyor screen belt 7, so that the fiber strands 81 are formed lO into wavy patterns 811 which overlap and interlace each other, as shown in Figure 9.
Referring again to Figure 5, in the method according to the present invention, a plurality of fiber strands 81 are produced from a fiber forming resin through the IS spinneret 4. In this embodiment, the fiber strands 81 are unidirectional, and are formed by melting a fiber forming resin, such as polypropylene or polyethylene, and by extruding the same vertically through the extrusion holes 41 in the spinneret 4.Since the drawing air jet device 5 produces downward air currents 53, the fiber strands 81 are then drawn downwardly from the spinneret 4 by the air currents 53 immediately after exiting the extrusion holes 41. Afterwards, the downwardly moving fiber strands 81 are blown by the swinging air currents 63 produced by the swinging air jet device 6 so that the fiber strands 81 are swung to-and-fro downstream of the drawing air jet device 5, upstreamoftheconveyorscreenbelt7, andintransverse directions so as to form wavy patterns811 which overlap and interlace each other in the transverse directions.
Finally, the downward fiber strands 81 are formed S on the support face 71 of the conveyor screen belt 7, and are advanced longitudinally by the conveyor screen belt 7. As shown in Figure 6, the wavy patterns 811 of the fiber strands 81 are entangled with each other and are superimposed one upon another, thereby forming a non-woven fabric 8, which is not only resistant to longitudinal pulling forces, but also has high transverse bonding strength.
ReferringtoFigurelO,apluralityoftheapparatuses, specifically, two apparatuses (A) end one apparatus (B) are arranged side by side above a common conveyor screen belt 7 to fabricate a non-woven fabric (not shown). The apparatus (B) differs from the apparatus (A) in that the apparatus (B) is not provided with the swinging air jet device 6. The non-woven fabric as produced includes three fiber layers which are superimposed one above the other.
As described above, in the present invention, the swinging air currents 63 produced by the swinging air jet device 6 blow the downward fiber strands 81 so that the fiber strands 81 can form wavy patterns 811, which overlap and interlace each other, thereby increasing the transverse bonding strength of the non-woven fabric 8. As such, through the method and apparatus of the present invention, a non-woven fabric 8 with high longitudinal and transverse tensile strengths can be obtained. Precise control of the rates of the air currents and the fiber strands 81 is not needed in the present invention.
Claims (3)
- CLAIMS: 1. Amethod of producing a non-woven fabric, comprising: (a)forming fiber strands from a fiber forming resin through a spinneret; (b) drawing the fiber strands from the spinneret by using a drawing air jet device; (c) forming the fiber strands on a conveyor screen belt and advancing the same along a longitudinal direction; and (d) using a swinging air jet device to swing the fiber strands to-and-fro downstream of the drawing air jet device, upstream of the conveyor screen belt and in transverse directions which are transverse to the longitudinal direction, wherein the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions.
- 2. The method as claimed in Claim 1, wherein the swinging air jet device is used to produce swinging air currents in step (d) to blow the fiber strands, the swinging air jet device having a plurality of swinging louvers.
- 3. The method and apparatus for making a non-woven fabric substantially as hereinbefore described with reference to and as illustrated in Figures 3 t o 10 of the accompanying drawings.3. An apparatus for making a non-woven fabric, comprising: a spinneret for forming fiber strands; a drawing air jet device disposed downstream of said spinneret for drawing the fiber strands; a conveyor screen belt disposed downstream of the drawing air jet device for forming and advancing the 1 0 fiber strands in a longitudinal direction; and a swinging air jet device disposed downstream of the drawing air jet device and upstream of the conveyor screen belt for swinging the fiber strands to-and-fro in transverse directions which are transverse to the longitudinal direction, wherein the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions.4. The apparatus as claimed in Claim 3, wherein the swinging air jet deviceincludesa plurality of swinging louvers to produce swinging air currents.5. The apparatus as claimed in Claim 3, wherein the swinging air jet device includes a nozzle outlet, and a plurality of swinging louvers disposed at said nozzle outlet, said swinging louvers being arranged in a row along a direction transverse to the longitudinal direction.6.The method and apparatus for making a non-woven fabric substantially es hereinbefore described with reference to and as illustrated in Figures 3 to 10 of the accompanying drawings.Amendments to the claims have been filed as follows: 1. A method of producing a non-woven fabric, comprising: a) forming fiber strands fro rn a fiber forming resin through a spinneret; 5b) drawing the fiber strands from the spinneret by using a drawing air jet device; cf. forming the fiber strands on a conveyor screen belt and.;. -.advancing the same along a longitudinal direction; and d) using a swinging air jet device to swing the fiber strands to and-fro downstream of the drawing air jet device, upstream of the conveyor screen belt and in transverse directions which are transverse to the longitudinal direction, wherein the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions, said swinging air jet device being used to produce swinging air currents to blow the fiber strands and having a plurality of swinging louvers which are moved to and-fro by a motor.2.An apparatus for making a non-woven fabric, comprising: 20a spinneret for forming fiber strands; a drawing air jet device disposed downstream of said spinneret for drawing the fiber strands; a conveyor screen belt disposed downstream of the drawing air jet device for forming and advancing the fiber strands in a longitudinal 1L direction; and a swinging air jet device disposed downstream of the drawing air jet device and upstream of the conveyor screen belt for swinging the fiber strands to-and-fro in transverse directions which are transverse to the longitudinal direction, wherein the fiber strands are formed into wavy patterns which overlap and interlace each other in the transverse directions; said swinging- air jet device including a nozzle outlet and a plurality of swinging louvers disposed at said nozzle outlet, said swinging louvers being used to produce swinging air currents and being moved to and-fro by a motor, said swinging louvers being arranged in a row along a direction transverse to the longitudinal direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0316928A GB2404201B (en) | 2003-07-19 | 2003-07-19 | Producing non-woven webs by laying continuous filaments onto a conveyor using a swinging air jet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0316928A GB2404201B (en) | 2003-07-19 | 2003-07-19 | Producing non-woven webs by laying continuous filaments onto a conveyor using a swinging air jet device |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0316928D0 GB0316928D0 (en) | 2003-08-27 |
| GB2404201A true GB2404201A (en) | 2005-01-26 |
| GB2404201B GB2404201B (en) | 2005-06-08 |
Family
ID=27772307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0316928A Expired - Fee Related GB2404201B (en) | 2003-07-19 | 2003-07-19 | Producing non-woven webs by laying continuous filaments onto a conveyor using a swinging air jet device |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2404201B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251348A (en) * | 2011-07-22 | 2011-11-23 | 湖南亚太实业有限公司 | Pneumatic stirring dispersion device for clustered fibers |
| CN104499070A (en) * | 2014-12-12 | 2015-04-08 | 井孝安 | Yarn swinging plate for producing nonwoven fabric |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463206A (en) * | 2021-08-17 | 2021-10-01 | 大自然科技股份有限公司 | Air fiber blowing forming method and device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314122A (en) * | 1963-07-01 | 1967-04-18 | Du Pont | Apparatus for forming non-woven web structures |
| US3776796A (en) * | 1971-09-28 | 1973-12-04 | Allied Chem | Process and apparatus for production of a nonwoven web |
| DE2408080A1 (en) * | 1974-02-20 | 1975-08-28 | Benecke Gmbh J | Continuous filament depositing system - uses a rotating air jet to swirl filaments in a spiral on to carrier conveyor |
| US5800840A (en) * | 1995-02-15 | 1998-09-01 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a spun-bond web from thermosplastic endless filaments |
| EP1234905A2 (en) * | 2001-02-27 | 2002-08-28 | Nippon Petrochemicals Company, Limited | Method of and apparatus for manufacturing a web having filaments aligned in a tranverse direction |
-
2003
- 2003-07-19 GB GB0316928A patent/GB2404201B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3314122A (en) * | 1963-07-01 | 1967-04-18 | Du Pont | Apparatus for forming non-woven web structures |
| US3776796A (en) * | 1971-09-28 | 1973-12-04 | Allied Chem | Process and apparatus for production of a nonwoven web |
| DE2408080A1 (en) * | 1974-02-20 | 1975-08-28 | Benecke Gmbh J | Continuous filament depositing system - uses a rotating air jet to swirl filaments in a spiral on to carrier conveyor |
| US5800840A (en) * | 1995-02-15 | 1998-09-01 | Reifenhauser Gmbh & Co. Maschinenfabrik | Apparatus for producing a spun-bond web from thermosplastic endless filaments |
| EP1234905A2 (en) * | 2001-02-27 | 2002-08-28 | Nippon Petrochemicals Company, Limited | Method of and apparatus for manufacturing a web having filaments aligned in a tranverse direction |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251348A (en) * | 2011-07-22 | 2011-11-23 | 湖南亚太实业有限公司 | Pneumatic stirring dispersion device for clustered fibers |
| CN104499070A (en) * | 2014-12-12 | 2015-04-08 | 井孝安 | Yarn swinging plate for producing nonwoven fabric |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0316928D0 (en) | 2003-08-27 |
| GB2404201B (en) | 2005-06-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20070719 |