ES369313A1 - Improvements in the construction of rows to produce bifilament thread from a synthetic linear fused polymer. (Machine-translation by Google Translate, not legally binding) - Google Patents

Improvements in the construction of rows to produce bifilament thread from a synthetic linear fused polymer. (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES369313A1
ES369313A1 ES369313A ES369313A ES369313A1 ES 369313 A1 ES369313 A1 ES 369313A1 ES 369313 A ES369313 A ES 369313A ES 369313 A ES369313 A ES 369313A ES 369313 A1 ES369313 A1 ES 369313A1
Authority
ES
Spain
Prior art keywords
holes
inch
diameter
undercut
bifilament
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
ES369313A
Other languages
Spanish (es)
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.)
Allied Corp
Original Assignee
Allied Chemical Corp
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 Allied Chemical Corp filed Critical Allied Chemical Corp
Publication of ES369313A1 publication Critical patent/ES369313A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
    • D01D5/30—Conjugate filaments; Spinnerette packs therefor
    • D01D5/32—Side-by-side structure; Spinnerette packs therefor

Landscapes

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

Abstract

A spinneret for producing bifilament yarn from a molten linear synthetic polymer comprises an extrusion plate 36 having an orifice arrangement 30 comprised of a pair of holes 32 and 34 extending parallel to each other through the plate and separated by a web structure 38 of thickness not more than 0À01 inch, the web structure being undercut at 40 approximately 0À002 to 0À008 inch to improve the coalescence of separate streams of molten polymer extruded through the holes. The holes may be of different sizes, as shown, or of the same size in the former case the larger hole has preferably a diameter at least twice that of the smaller hole. The width of the web undercut is from 0À005 to 0À03 inch depending on the hole diameter smaller holes have an undercut width equal to their diameter, whilst larger holes (e.g. 0À04 inch diameter) have an undercut width less than their diameter. The web thickness is preferably from 0À002 to 0À006 inch. The extrusion plate may have a countersunk portion on the inner face to reduce the length of the holes. The separate streams of molten polymer coalesce immediately prior to leaving the extrusion plate, and good coalescence is obtained.
ES369313A 1968-07-09 1969-07-09 Improvements in the construction of rows to produce bifilament thread from a synthetic linear fused polymer. (Machine-translation by Google Translate, not legally binding) Expired ES369313A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74347268A 1968-07-09 1968-07-09

Publications (1)

Publication Number Publication Date
ES369313A1 true ES369313A1 (en) 1971-06-01

Family

ID=24988910

Family Applications (1)

Application Number Title Priority Date Filing Date
ES369313A Expired ES369313A1 (en) 1968-07-09 1969-07-09 Improvements in the construction of rows to produce bifilament thread from a synthetic linear fused polymer. (Machine-translation by Google Translate, not legally binding)

Country Status (8)

Country Link
BE (1) BE735849A (en)
BR (1) BR6910577D0 (en)
CH (1) CH507382A (en)
DE (1) DE1934845A1 (en)
ES (1) ES369313A1 (en)
FR (1) FR2012612A1 (en)
GB (1) GB1226726A (en)
NL (1) NL6910521A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4720314A (en) * 1980-06-06 1988-01-19 Celanese Corporation Process for producing self-crimping polyester yarn
US4562029A (en) * 1980-06-06 1985-12-31 Celanese Corporation Self-crimping polyester yarn
US6619947B2 (en) 2000-12-21 2003-09-16 Kimberly-Clark Worldwide, Inc. Dual capillary spinneret with single outlet for production of homofilament crimp fibers
FR2925072B1 (en) * 2007-12-14 2010-09-10 Promiles METHOD FOR MANUFACTURING A FILAMENT, EXTRUSION LINE FOR CARRYING OUT SAID MANUFACTURING METHOD AND FILAMENT OBTAINED
CN115012049A (en) * 2022-05-19 2022-09-06 张家港江苏科技大学产业技术研究院 Hollow fiber and processing equipment and processing method thereof

Also Published As

Publication number Publication date
BR6910577D0 (en) 1973-01-02
DE1934845A1 (en) 1970-01-15
FR2012612A1 (en) 1970-03-20
NL6910521A (en) 1970-01-13
GB1226726A (en) 1971-03-31
CH507382A (en) 1971-05-15
BE735849A (en) 1970-01-09

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