CA2147690C - Stationary-pressure apparatus for producing spun-bond web - Google Patents

Stationary-pressure apparatus for producing spun-bond web

Info

Publication number
CA2147690C
CA2147690C CA002147690A CA2147690A CA2147690C CA 2147690 C CA2147690 C CA 2147690C CA 002147690 A CA002147690 A CA 002147690A CA 2147690 A CA2147690 A CA 2147690A CA 2147690 C CA2147690 C CA 2147690C
Authority
CA
Canada
Prior art keywords
section
width
shaft
spun
smaller
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
CA002147690A
Other languages
French (fr)
Other versions
CA2147690A1 (en
Inventor
Hans Georg Geus
Detlet Frey
Bernd Kunze
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.)
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Original Assignee
Reifenhaeuser GmbH and Co KG Maschinenenfabrik
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 Reifenhaeuser GmbH and Co KG Maschinenenfabrik filed Critical Reifenhaeuser GmbH and Co KG Maschinenenfabrik
Publication of CA2147690A1 publication Critical patent/CA2147690A1/en
Application granted granted Critical
Publication of CA2147690C publication Critical patent/CA2147690C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/098—Melt spinning methods with simultaneous stretching
    • D01D5/0985—Melt spinning methods with simultaneous stretching by means of a flowing gas (e.g. melt-blowing)
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

Nonwoven spun-bond is produced by a stationary pressure apparatus in which the shaft below the spinneret has an inlet section followed by a downwardly converging intermediate section, a drawing section and a diffuser opening above the collecting belt through which air is drawn by a suction device.
The process air velocity profile has an intersection point with the drawing value at the intermediate section and the distance between the intersection point and the spinneret is smaller than the distance between the intersection point and the bottom end of the drawing section.

Claims (7)

1. An apparatus for producing a nonwoven spun-bond web by the stationary pressure principle using expansion and acceleration of process air and drawing of the spun filament, said apparatus comprising:
a spinneret producing a descending curtain of spun filaments;
means forming a shaft enclosing said descending curtain of spun filaments below said spinneret;
process-air supply means connected with said shaft for feeding process air thereto;
a continuously moving foraminous receiving belt below said shaft for collecting said spun filaments and on which a nonwoven spun-bond web is formed; and a suction device below said belt for drawing air through said belt, said shaft having from top to bottom an inlet section of a given length and width and in which air is directed against said curtain of spun filament, a downwardly tapering intermediate section having a certain convergence angle, a stretching section connected to said intermediate section, and a downwardly flaring diffusor section connected to said stretching section, said process air is introduced into the inlet section and after an initial flow path in the shaft reaches a maximum velocity at the upstream end of the stretching section, said spun filaments achieve a constant drawing value just after the curtain emerges from the spinneret, a curve of the process air velocity plotted along the length of the shaft intersects a curve of the drawing value at an intersection point (8) substantially in a region of the intermediate section, (a) a distance (A1) of the intersection point (8) from the spinneret being smaller than a distance (A2) from the intersection point (8) to a downstream end of the stretching section, (b) the convergence half angle (.alpha.) of the intermediate section being 0.05° to 2°, (c) a width (B1) of the spun filament curtain in the region of the inlet section being smaller than a width (B2) of the inlet section, and (d) said shaft and process-air supply means being constructed and arranged so that the process air has a maximum velocity (VLmax) greater than the constant drawing value (VFa) by a factor of 1.2 to 1.6 so that VLmax = (1.2VFa to 1.6VFa).
2. The apparatus defined in claim 1 wherein the spacing between the spun filaments in said curtain is about 1.5 to 12 mm.
3. The apparatus defined in claim 1 wherein the distance (A1) is smaller than the distance (A2) by a factor of about 0.5 so that A1 equals 0.5 A2.
4. The apparatus defined in claim 1 wherein the width (B1) is smaller than the half width (B2) of the inlet section.
5. The apparatus defined in claim 4 in which the width (B1) is smaller than the width (B2) by a factor of about 0.7 so that B1 < 0.7B2.
6. The apparatus defined in claim 5 wherein the width (B1) is smaller than the half width (B2) by a factor of about 0.3 so that B1 = 0.3B2.
7. The apparatus defined in claim 1 wherein said process-air supply means are constructed so that said process air has a pressure drop in said shaft between 600 and 2500 Pa.
CA002147690A 1994-04-23 1995-04-24 Stationary-pressure apparatus for producing spun-bond web Expired - Lifetime CA2147690C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4414277A DE4414277C1 (en) 1994-04-23 1994-04-23 Spun-bonded fabric plant of higher process yield and transfer coefft.
DEP4414277.3-26 1994-04-23

Publications (2)

Publication Number Publication Date
CA2147690A1 CA2147690A1 (en) 1995-10-24
CA2147690C true CA2147690C (en) 1998-08-11

Family

ID=6516301

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002147690A Expired - Lifetime CA2147690C (en) 1994-04-23 1995-04-24 Stationary-pressure apparatus for producing spun-bond web

Country Status (6)

Country Link
US (1) US5571537A (en)
JP (1) JP2585985B2 (en)
CN (1) CN1041334C (en)
CA (1) CA2147690C (en)
DE (1) DE4414277C1 (en)
IT (1) IT1274380B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19620379C2 (en) * 1996-05-21 1998-08-13 Reifenhaeuser Masch Plant for the continuous production of a spunbonded nonwoven web
IL155787A0 (en) * 2000-11-20 2003-12-23 3M Innovative Properties Co Fiber-forming process
US6607624B2 (en) 2000-11-20 2003-08-19 3M Innovative Properties Company Fiber-forming process
US20030003834A1 (en) * 2000-11-20 2003-01-02 3M Innovative Properties Company Method for forming spread nonwoven webs
US7179412B1 (en) * 2001-01-12 2007-02-20 Hills, Inc. Method and apparatus for producing polymer fibers and fabrics including multiple polymer components in a closed system
DK1432861T4 (en) * 2001-09-26 2012-02-13 Fiberweb Simpsonville Inc Apparatus and method for making a nonwoven web of filaments
US20030118816A1 (en) * 2001-12-21 2003-06-26 Polanco Braulio A. High loft low density nonwoven webs of crimped filaments and methods of making same
US7258758B2 (en) * 2001-12-21 2007-08-21 Kimberly-Clark Worldwide, Inc. Strong high loft low density nonwoven webs and laminates thereof
US6799957B2 (en) * 2002-02-07 2004-10-05 Nordson Corporation Forming system for the manufacture of thermoplastic nonwoven webs and laminates
US8333918B2 (en) * 2003-10-27 2012-12-18 Kimberly-Clark Worldwide, Inc. Method for the production of nonwoven web materials
US7694379B2 (en) 2005-09-30 2010-04-13 First Quality Retail Services, Llc Absorbent cleaning pad and method of making same
US7962993B2 (en) 2005-09-30 2011-06-21 First Quality Retail Services, Llc Surface cleaning pad having zoned absorbency and method of making same
CN100558966C (en) * 2006-03-10 2009-11-11 李俊毅 Produce the equipment of elastic non-woven cloth or cladding
US8246898B2 (en) * 2007-03-19 2012-08-21 Conrad John H Method and apparatus for enhanced fiber bundle dispersion with a divergent fiber draw unit
DK2009163T3 (en) * 2007-06-29 2014-01-13 Reifenhaeuser Gmbh & Co Kg Device for making filter cloth
PL2738297T3 (en) * 2012-12-03 2016-08-31 Reifenhaeuser Masch Method and device for the manufacture of a spunbonded web made from filaments
SI3199671T1 (en) * 2016-01-27 2020-07-31 Reifenhaeuser Gmbh & Co. Kg Maschinenfabrik Device for manufacturing non-woven material
DK3428333T3 (en) * 2016-03-30 2021-03-01 Mitsui Chemicals Inc DEVICE FOR THE MANUFACTURE OF NON-WOVEN FABRIC AND METHOD OF MANUFACTURE OF NON-WOVEN FABRIC
CN106400141B (en) * 2016-11-15 2019-05-07 东华大学 A hydrostatic melt spinning device
KR102391138B1 (en) * 2018-03-29 2022-04-28 도레이 카부시키가이샤 Drawing apparatus, and apparatus and method for manufacturing fibers and fibrous webs
CN111172603A (en) * 2020-02-11 2020-05-19 宏大研究院有限公司 A drafting device suitable for spunbond spinning

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049755A (en) * 1959-08-03 1962-08-21 Asahi Chemical Ind Process and apparatus for stretch spinning cuprammonium rayon
DE3400847C1 (en) * 1984-01-12 1985-08-29 Fa. Carl Freudenberg, 6940 Weinheim Process for the production of spunbonded nonwovens from aerodynamically stretched threads
DE3401639A1 (en) * 1984-01-19 1985-07-25 Hoechst Ag, 6230 Frankfurt DEVICE FOR PRODUCING A SPINNING FLEECE
DE3419720A1 (en) * 1984-05-26 1985-11-28 Veb Kombinat Technische Textilien Karl-Marx-Stadt, Ddr 9010 Karl-Marx-Stadt Process and apparatus for producing monofilament nonwovens
DE3503818C1 (en) * 1985-02-05 1986-04-30 Reifenhäuser GmbH & Co Maschinenfabrik, 5210 Troisdorf Device for stretching monofilament bundles
DE3541128A1 (en) * 1985-11-21 1987-05-27 Benecke Gmbh J METHOD FOR PRODUCING A FLEECE FROM CONTINUOUS FEEDS AND DEVICE FOR IMPLEMENTING THE METHOD
US5034182A (en) * 1986-04-30 1991-07-23 E. I. Du Pont De Nemours And Company Melt spinning process for polymeric filaments
DE3701531A1 (en) * 1987-01-21 1988-08-04 Reifenhaeuser Masch METHOD AND SYSTEM FOR PRODUCING A SPINNED FLEECE
DE3713862A1 (en) * 1987-04-25 1988-11-10 Reifenhaeuser Masch METHOD AND SPINNED FLEECE SYSTEM FOR PRODUCING A SPINNED FLEECE FROM SYNTHETIC CONTINUOUS FILAMENT
DE3736418A1 (en) * 1987-04-25 1988-11-10 Reifenhaeuser Masch Process and apparatus for operating a spun-bonded web installation for the production of a spun-bonded web from synthetic endless filaments
GB2203764B (en) * 1987-04-25 1991-02-13 Reifenhaeuser Masch Production of spun fleece from continuous synthetic filaments
US5141699A (en) * 1987-12-21 1992-08-25 Minnesota Mining And Manufacturing Company Process for making oriented melt-blown microfibers
FR2636741B1 (en) * 1988-09-21 1991-03-22 Inst Francais Du Petrole SYSTEM FOR RECEIVING SIGNALS THAT CAN BE COUPLED WITH THE WALL OF A WELL OR WELL
CA2038164C (en) * 1990-03-14 1999-02-09 Keiji Kobayashi Air gun for the production of non-woven fabric and non-woven fabric producing apparatus
DE4102650A1 (en) * 1991-01-30 1992-08-06 Silver Plastics Gmbh & Co Kg METHOD AND DEVICE FOR PRODUCING A SPINNING FLEECE FROM SYNTHETIC POLYMER
DE4312419C2 (en) * 1993-04-16 1996-02-22 Reifenhaeuser Masch Plant for the production of a spunbonded nonwoven web from aerodynamically stretched plastic filaments

Also Published As

Publication number Publication date
ITMI950829A0 (en) 1995-04-21
CN1114990A (en) 1996-01-17
CA2147690A1 (en) 1995-10-24
JP2585985B2 (en) 1997-02-26
JPH0835158A (en) 1996-02-06
CN1041334C (en) 1998-12-23
US5571537A (en) 1996-11-05
ITMI950829A1 (en) 1996-10-21
DE4414277C1 (en) 1995-08-31
IT1274380B (en) 1997-07-17

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Effective date: 20150424