EP0182615A2 - Spinnkopf - Google Patents

Spinnkopf Download PDF

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Publication number
EP0182615A2
EP0182615A2 EP85308296A EP85308296A EP0182615A2 EP 0182615 A2 EP0182615 A2 EP 0182615A2 EP 85308296 A EP85308296 A EP 85308296A EP 85308296 A EP85308296 A EP 85308296A EP 0182615 A2 EP0182615 A2 EP 0182615A2
Authority
EP
European Patent Office
Prior art keywords
orifices
groups
spinneret
group
outer ring
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
Application number
EP85308296A
Other languages
English (en)
French (fr)
Other versions
EP0182615B1 (de
EP0182615A3 (en
Inventor
Richard Lewis Dreibelbis
Oliver Larry Hunt
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of EP0182615A2 publication Critical patent/EP0182615A2/de
Publication of EP0182615A3 publication Critical patent/EP0182615A3/en
Application granted granted Critical
Publication of EP0182615B1 publication Critical patent/EP0182615B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes

Definitions

  • This invention relates to composite textile yarns. More particularly it relates to coalesced multifilament yarn. especially spandex yarn and to a spinneret for obtaining such a yarn.
  • the conventional spinnerets used for light denier spandex production have two rings, i.e.. an outer ring and an inner ring of grouped orifices wherein each group is composed of four holes.
  • the spacing between holes of each grouping is the same regardless of whether the group is in the inner or outer ring.
  • a new spinneret wherein the orifice spacing of the groupings of the outer ring is substantially less than those of the inner ring has been shown to essentially eliminate power differences between groups. Further, filament migration is reduced thereby increasing yields.
  • the prior art spinneret 10 chosen for purposes of illustration includes a plate 12 having an outer ring 14 and an inner ring 16 of grouped orifices 14a, 16a respectively with each individual orifice in the groups in the outer ring and inner ring designated by the numbers 18 and 20 respectively.
  • the peripheral and radial distances d between orifices of each group 14a, 16a in the outer and inner rings 14, 16 are the same for both outer and inner ring groups.
  • the spinneret of this invention is shown in FIG. 2 wherein like numerals for like elements are used. More particularly, the spinneret 10' includes a plate 12' having an outer ring 14' and an inner ring 16' of groups of orifices 14a'. 16a'. As before, each individual orifice is designated 18' and 20' in the outer and inner rings. respectively.
  • the peripheral distance d 1 and the radial distance d 2 between the orifices in the groups 14' in the outer ring 14' of groups are the same for each group in the outer ring. In the preferred embodiment shown, d l is greater than d 2 . However, each of the distances d 1 , d 2 are less than the distance d 3 between the orifices in the groups 16a'.
  • d 1 to be greater than d 2
  • a spinneret with d 1 equal to d 2 or d l less than d 2 will perform as well.
  • Load power (T300) is stress at 300% elongation. Five samples of spandex yarn each 5" long, are tested at 2" gauge length using an Instron® tensile tester at 1000% per minute strain rate. The value in grams (g) of the stress at 300% elongation is reported as load power.
  • the spinneret described in connection with FIG. 2 has been shown to essentially eliminate load power differences between threadlines or coalesced groups of filaments.
  • a spandex spinning solution prepared as described in Examples I and II of U.S. Patent No. 3.428.711. was extruded through a 64-hole spinneret to form 16 coalesced threadlines.
  • the arrangement of holes in the spinneret is shown in FIG. 2.
  • the hole spacing for the orifices of the inner group is 0.39" (9.9 mm).
  • the spinning solution was extruded at a rate b f 6.2 pph and wound up at about 730 mpm to yield sixteen 40 denier fibers, each fiber formed from 4 coalesced 10 denier filaments. Of the sixteen fibers, twelve are designated outer ring fibers, four are inner ring fibers.
  • the load power (T300), for inner and outer ring fibers is given in Table 1 in comparison to those of a product from a prior art spinneret of Example 2.
  • Example 1 was repeated using a prior art spinneret as shown in FIG. 1.
  • This spinneret has 64 holes, arranged in sixteen groups of four holes. Twelve of the groups form the outer ring, four groups form the inner ring. The spacing between the orifices of each group is 0.39" (9.9 mm) for both outer and inner ring groups.
  • a 24-thread. 40 denier spandex fiber was produced using a 96-hole spinneret. The 96 holes are divided among 24 groupings, each group having 4 holes. There are 16 outer groupings and 8 inner groupings. Hole-to-hole spacing is 0.32" for both inner and outer threadlines. Solution was fed at a rate of 10.0 pph and fiber wound up at about 814 mpm.
  • the outer threadline load power (T300) is 16.39 g
  • the inner threadline retractive load power (T300) is 15.94 g
  • Example 3 was repeated using a 96-hole spinneret of this invention wherein the outer hole spacing was 0.20" and the inner hole spacing was 0.35".
  • Outer threadline load power (T300) was 16.89 g. inner threadline load power is 16.94 g.
  • the 0.05 g difference in threadline retractive load power (T300) is an order of magnitude improvement over the fiber of Example 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP85308296A 1984-11-15 1985-11-14 Spinnkopf Expired - Lifetime EP0182615B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67192084A 1984-11-15 1984-11-15
US671920 1984-11-15

Publications (3)

Publication Number Publication Date
EP0182615A2 true EP0182615A2 (de) 1986-05-28
EP0182615A3 EP0182615A3 (en) 1988-03-30
EP0182615B1 EP0182615B1 (de) 1990-07-18

Family

ID=24696426

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85308296A Expired - Lifetime EP0182615B1 (de) 1984-11-15 1985-11-14 Spinnkopf

Country Status (8)

Country Link
EP (1) EP0182615B1 (de)
JP (1) JPS61119706A (de)
KR (1) KR860004174A (de)
BR (1) BR8505705A (de)
CA (1) CA1252968A (de)
DE (1) DE3578741D1 (de)
MX (1) MX162605A (de)
SU (1) SU1438617A3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723080A (en) * 1995-07-27 1998-03-03 Bayer Faser Gmbh Process for producing splittable elastane yarns
WO1998028471A1 (en) * 1996-07-24 1998-07-02 Du Pont-Toray Company, Ltd. Coalesced multifilament spandex and method for its preparation
US6214145B1 (en) 1996-07-24 2001-04-10 Dupont Toray Co., Ltd. Coalesced multifilament spandex and method for its preparation
WO2017200900A1 (en) 2016-05-20 2017-11-23 Invista North America S.A R.L. Non-round solution spun spandex filaments and methods and devices for production thereof

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100460137B1 (ko) * 2002-10-09 2004-12-03 태광산업주식회사 스판덱스 건식방사용 방사구금, 이를 이용하여 제조된스판덱스 및 스판덱스의 제조방법
CN107794581A (zh) * 2017-12-14 2018-03-13 江苏恒力化纤股份有限公司 复合喷丝板

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094374A (en) * 1961-07-11 1963-06-18 Du Pont Dry spinning process for preparing coalesced spandex filaments
FR1478798A (fr) * 1965-05-04 1967-04-28 Du Pont Fil à plusieurs filaments soudés et procédé de préparation d'un tel fil

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE876135C (de) * 1944-02-26 1953-05-11 Degussa Spinnduese fuer die Herstellung von Kunstfaeden oder Zellwolle

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3094374A (en) * 1961-07-11 1963-06-18 Du Pont Dry spinning process for preparing coalesced spandex filaments
FR1478798A (fr) * 1965-05-04 1967-04-28 Du Pont Fil à plusieurs filaments soudés et procédé de préparation d'un tel fil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5723080A (en) * 1995-07-27 1998-03-03 Bayer Faser Gmbh Process for producing splittable elastane yarns
WO1998028471A1 (en) * 1996-07-24 1998-07-02 Du Pont-Toray Company, Ltd. Coalesced multifilament spandex and method for its preparation
US6214145B1 (en) 1996-07-24 2001-04-10 Dupont Toray Co., Ltd. Coalesced multifilament spandex and method for its preparation
WO2017200900A1 (en) 2016-05-20 2017-11-23 Invista North America S.A R.L. Non-round solution spun spandex filaments and methods and devices for production thereof

Also Published As

Publication number Publication date
BR8505705A (pt) 1986-08-12
JPS61119706A (ja) 1986-06-06
SU1438617A3 (ru) 1988-11-15
DE3578741D1 (de) 1990-08-23
EP0182615B1 (de) 1990-07-18
MX162605A (es) 1991-05-31
CA1252968A (en) 1989-04-25
EP0182615A3 (en) 1988-03-30
KR860004174A (ko) 1986-06-18

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