EP1171373B1 - Procede de bobinage d'une bobine de fibres elastomeres - Google Patents

Procede de bobinage d'une bobine de fibres elastomeres Download PDF

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Publication number
EP1171373B1
EP1171373B1 EP00923212A EP00923212A EP1171373B1 EP 1171373 B1 EP1171373 B1 EP 1171373B1 EP 00923212 A EP00923212 A EP 00923212A EP 00923212 A EP00923212 A EP 00923212A EP 1171373 B1 EP1171373 B1 EP 1171373B1
Authority
EP
European Patent Office
Prior art keywords
force
winding
package
fiber
time
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
EP00923212A
Other languages
German (de)
English (en)
Other versions
EP1171373A1 (fr
Inventor
Tatsuyuki Okada
Hidekazu Iketani
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.)
Du Pont Toray Co Ltd
Original Assignee
Du Pont Toray Co Ltd
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Filing date
Publication date
Application filed by Du Pont Toray Co Ltd filed Critical Du Pont Toray Co Ltd
Publication of EP1171373A1 publication Critical patent/EP1171373A1/fr
Application granted granted Critical
Publication of EP1171373B1 publication Critical patent/EP1171373B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40—Arrangements for rotating packages
    • B65H54/52—Drive contact pressure control, e.g. pressing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H55/00—Wound packages of filamentary material
    • B65H55/04—Wound packages of filamentary material characterised by method of winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/12—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments
    • B65H2701/319—Elastic threads

Definitions

  • the present invention relates to a winding process for an elastomeric fiber package and, more particularly, to a process for winding a package utilizing a contact roll exerting variable pressure during the winding.
  • elastomeric fibers have been used in many areas such as industrial materials, clothing, and disposable personal care products (for example diapers).
  • the elastomeric fibers have been woven and knit into fabrics, stitch-bonded into nonwovens, and directly adhered onto sheet materials such as nonwovens and films.
  • the elastomeric fiber is ordinarily provided wound onto tubecores.
  • the wound fiber and associated tubecore are referred to as a "package".
  • the elastomeric fiber is unwound from the package sequentially or in parallel, either passively (for example, by "over-end take-off") or actively (for example by "rolling take-off”), and fed to a downstream process.
  • US-A-3 672 583 discloses an apparatus and a method for winding a package positioned on a spindle assembly and held against a roller bail with substantially continually decreasing winding pressure as winding progresses and the spindle assembly moves across dead center with gravity first urging the package towards the roller bail and then away from the roller bail.
  • a process for winding an elastomeric fiber (2) producing an inflected force profile comprising the steps of:
  • an elastomeric fiber package especially a large package which has good unwinding characteristics and excellent package shape, can be made by winding the package with an inflected force profile.
  • “Elastomeric fiber” means a filament which has a break elongation in excess of 100% independent of any crimp and which when stretched and released, retracts quickly and forcibly to substantially its original length.
  • Such fibers include rubber fiber, spandex or elastane, polyetherester fiber, polyetheramide fiber, certain polypropylenes, and elastoester.
  • "Spandex” and “elastane” mean a manufactured fiber in which the fiber-forming substance is a long chain synthetic elastomer comprised of at least 85% by weight of a segmented polyurethane.
  • “Inflected force profile” means a plot of the package diameter vs the force of the contact roll against the tubecore and winding package, the plot having a change of curvature, with respect to a fixed line, from concave to convex, or conversely, depending on the point from which the plot is viewed.
  • Synthetic elastomeric fibers such as elastane, polyetheramide fibers, and polyetherester fibers can be prepared from polymeric glycols; copolymeric glycols can also be used.
  • the polymeric glycol can be a (co)polyether glycol, (co)polyester glycol, and/or (co)polycarbonate glycol.
  • the polymeric glycol is typically reacted with a diisocyanate and at least one diamine, alkanolamine, and/or diol to form the polymer.
  • a polyether glycol can be reacted with a diacid and at least one low-molecular weight diol to form the polymer.
  • Polyether diamines, diacids, and low-molecular weight diamines can be used to make polyetheramides.
  • Monofunctional chain terminators such as alcohols and amines can be used to control the molecular weight of the polymers.
  • solution- or melt-polymerization can be used.
  • dry-, wet-, or melt-spinning can be used to prepare the fiber, depending on the type of polymer.
  • Additives and stabilizers can be added to the fiber, provided they do not adversely affect the process of the invention.
  • the fiber After the fiber has been spun, it is typically reciprocated transversely to the direction of its travel by a traverse means and wound up on a tubecore.
  • the tubecore is customarily mounted on a spindle assembly, and the fiber is wound onto the tubecore with the aid of a contact roll.
  • the spindle assembly can be driven and the contact roll can be undriven (freely rotating). Alternatively, the spindle assembly can be undriven, and the contact roll can be driven, thus providing the rotational drive needed to rotate the spindle assembly.
  • the force exerted by the contact roll on the tube core is reduced during winding according to a specific profile.
  • the force reductions are described herein by reference to the force used at the beginning of winding (the "initial force").
  • the maximum initial force can be 10Kg, and the minimum force can be 1 Kg.
  • the force is gradually reduced a first time, to about 25-60% of the initial force.
  • the contact roll force is then held substantially constant until the final 30%, preferably about 20%, of the winding time, at which point the force is reduced a second time to no less than about 10%, preferably about 10-35%, of the initial force.
  • Winding time corresponds approximately to package diameter, and plotting the contact roll force against the diameter of the winding package gives an inflected force profile as illustrated in Figure 2.
  • the method of this invention provides an elastomeric fiber package which has a substantially uniform wound width, thereby providing excellent unwinding and shape retention properties. That is, the present invention produces a package as illustrated in Figure 1, which has a small difference ⁇ ⁇ between the maximum value ⁇ max and the minimum value ⁇ min of the wound package width.
  • a small ⁇ ⁇ indicates sidewalls that are desirably substantially flat and perpendicular to the axis of the tubecore; such packages have good unwinding characteristics.
  • the process of the invention is especially useful for elastomeric fiber packages weighing 3kg or more and even exceeding 4kg.
  • any suitable method can be used in this invention as a means to control and vary the force that the contact roll exerts against the package.
  • an apparatus as illustrated in Figure 5 can be used in which compressed air cylinder 5 operates on signals from a control device (not shown) to adjust the weight of arm 4 that supports contact roll 3 which rotates in contact with tubecore and package 1 as elastomeric fiber 2 is wound up.
  • a control device not shown
  • a hydraulic cylinder can be used in place of the air cylinder.
  • Other geometries can also be used to obtain the inflected force profile of the invention.
  • a 560 denier (622 dtex) Lycra® spandex (Type 127; a registered trademark of E. I. du Pont de Nemours and Company) was dry-spun by conventional means and wound up on a 175-mm long tubecore to reach a wound package weight of 4.5kg. No finish was applied to the fiber.
  • the force that the contact roll exerted against the package during winding followed the inflected force profile shown in Figure 2, in which package diameter (in mm) is plotted on the abscissa and the force that the contact roll exerts against the package (in Kg) is plotted on the ordinate. As shown in Figure 2, the total winding diameter was about 282 mm.
  • the contact roll force was held substantially constant until the end of winding, at which point it was reduced further to about 31% of the initial force, in other words to about 1.8Kg.
  • Table 1 the difference in wound width was small and the product had excellent sidewall shape and unwinding characteristics.
  • Example 1 Elastomeric fiber was spun and wound up exactly as in Example 1 except that the force that the contact roll exerted against the package was increased as during conventional winding and as shown in Figure 4. As reported in Table 1, the resulting package had a wound width greater than that of the package of Example 1, showed inferior unwinding characteristics, and had an S-shape (substantial bulge) in the sidewall as illustrated in Figure 3.
  • Example 1 Comp.
  • Example 1 The curve shape of the force that contact roll exerts against package Inflected force profile, as in Figure 2 Linear, as in Figure 4 Difference in wound width ⁇ w (mm) 16 30 Sidewall shape Gentle curve S-shaped, with large bulge Unwinding characteristics Good Poor

Landscapes

  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)
  • Artificial Filaments (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Moulding By Coating Moulds (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Winding Filamentary Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

L'invention concerne un procédé de bobinage d'une bobine de fibres élastomères. Le procédé comprend un rouleau de contact exerçant une force décroissante, en fonction d'un profil spécifique, sur un tube de fil d'âme et sur la bobine en formation, après le début du bobinage.

Claims (4)

  1. Procédé de bobinage d'une fibre élastomère (2) produisant un profil de force infléchie, comprenant les étapes ci-dessous:
    (A) rotation d'un noyau tubulaire en contact avec un rouleau de contact (3);
    (B) bobinage de la fibre sur le noyau tubulaire, de sorte que le rouleau de contact exerce une force initiale non supérieure à environ 10 kg contre la fibre sur le noyau tubulaire, une bobine (1) commençant à être formée; et
    (C) réduction de la force à une force finale non inférieure à environ 1 kg;
    caractérisé en ce que
       ledit procédé produit un profil de force infléchie par une première réduction progressive de la force lors de l'étape (C ) de sorte qu'elle représente environ 25 à 60% de la force initiale au cours des premiers 30% du temps de bobinage;
       maintien d'une force pratiquement constante jusqu'à l'écoulement des 30% finaux du temps de bobinage; et
       deuxième réduction de la force à une force finale représentant 10 à 35% de la force initiale, le poids de la bobine correspondant au moins à 3 kg.
  2. Procédé selon la revendication 1, dans lequel la force est réduite une première fois au cours d'environ les premiers 10% du temps de bobinage, la force étant réduite une deuxième fois au cours d'environ les 20% finaux du temps de bobinage.
  3. Procédé selon la revendication 1, dans lequel la fibre est sélectionnée dans le groupe constitué de spandex et de polyétherester.
  4. Procédé selon les revendications 1 ou 3, dans lequel le poids de la bobine correspond au moins à 4 kg.
EP00923212A 1999-04-14 2000-04-10 Procede de bobinage d'une bobine de fibres elastomeres Expired - Lifetime EP1171373B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11106859A JP2000302327A (ja) 1999-04-14 1999-04-14 弾性糸巻糸体の巻取方法
JP10685999 1999-04-14
PCT/US2000/009544 WO2000061484A1 (fr) 1999-04-14 2000-04-10 Procede de bobinage d'une bobine de fibres elastomeres

Publications (2)

Publication Number Publication Date
EP1171373A1 EP1171373A1 (fr) 2002-01-16
EP1171373B1 true EP1171373B1 (fr) 2003-07-30

Family

ID=14444312

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00923212A Expired - Lifetime EP1171373B1 (fr) 1999-04-14 2000-04-10 Procede de bobinage d'une bobine de fibres elastomeres

Country Status (8)

Country Link
EP (1) EP1171373B1 (fr)
JP (1) JP2000302327A (fr)
KR (1) KR100568653B1 (fr)
CN (1) CN1200865C (fr)
BR (1) BR0011185A (fr)
DE (1) DE60004194T2 (fr)
TR (1) TR200102943T2 (fr)
WO (1) WO2000061484A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4575429B2 (ja) * 2004-03-03 2010-11-04 ザウラー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト 複数の糸を巻取るための方法及び装置
KR101040134B1 (ko) * 2011-02-01 2011-06-09 주식회사 유원기업 새 둥지 방지 유닛

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL87667C (fr) * 1953-08-10
US3672583A (en) * 1970-08-18 1972-06-27 Leesona Corp Winding apparatus and method
US5727744A (en) * 1996-03-13 1998-03-17 Threlkeld; James O. Method and apparatus to control the winding pattern on a yarn package

Also Published As

Publication number Publication date
WO2000061484A1 (fr) 2000-10-19
BR0011185A (pt) 2002-03-05
TR200102943T2 (tr) 2002-06-21
DE60004194D1 (de) 2003-09-04
KR20020010898A (ko) 2002-02-06
JP2000302327A (ja) 2000-10-31
CN1347384A (zh) 2002-05-01
CN1200865C (zh) 2005-05-11
EP1171373A1 (fr) 2002-01-16
DE60004194T2 (de) 2004-04-15
KR100568653B1 (ko) 2006-04-07

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