US3815350A - Process for the production of yarns - Google Patents

Process for the production of yarns Download PDF

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Publication number
US3815350A
US3815350A US00316728A US31672872A US3815350A US 3815350 A US3815350 A US 3815350A US 00316728 A US00316728 A US 00316728A US 31672872 A US31672872 A US 31672872A US 3815350 A US3815350 A US 3815350A
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US
United States
Prior art keywords
drafting unit
sliver
continuously
spinning
fibrillated
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
US00316728A
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English (en)
Inventor
A Gardella
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.)
Individual
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Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3815350A publication Critical patent/US3815350A/en
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
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • D01G1/06—Converting tows to slivers or yarns, e.g. in direct spinning
    • D01G1/08—Converting tows to slivers or yarns, e.g. in direct spinning by stretching or abrading
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • D02G3/06—Threads formed from strip material other than paper
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/907—Foamed and/or fibrillated

Definitions

  • ABSTRACT A continuous sheet of synthetic resinous material oriented in a longitudinal direction and cut into a plurality of strands integrally joined together at regularly spaced intervals along the length thereof is continuously fed to the drafting unit of a can spinning spindle and transformed by drawing into a discontinuous fibrillated sliver, said sliver being continuously transformed into a yarn into the said spinning spindle by twisting it, and the so-formed yarn is deposited into a bobbin in the can of the can spinning spindle.
  • the synthetic resinous material may be any such material which is capable of being formed into a continuous strip or sheet and which can be orientated.
  • examples of such material are polyalkenes (e.g. polyethylen e, polypropylene etc.), polyamides (e.g. nylon), polyesters (e.g. polyterephthalic esters).
  • the said slitted continuous strip of synthetic resinous material may be thereafter subjected to a tensioning operation, by means of which it is transformed into a web-like or fibrillated sliver of multifilaments, which is collected into bobbins and which may be thereafter subjected to a spinning operation in suitable spinning frames, so as to transform said sliver into a yarn.
  • the slitted continuous strips of material may be easily collected intoreels, and the said reels may be easily stored, handled and transferred-from one place to another, the bobbins of slivers of multifilaments are bulky, and are not so easy to be handled for the subsequent twisting operation.
  • the slit continuous strip is continuously transformed into a sliver in the drafting unit of the same spinning frame by whichit is transformed into a yarn.
  • the so-produced yarn is automatically collected into bobbins in the can of the can spinning spindle.
  • the said continuous slit web is subjected in said drafting unit to a draw ratio comprised between 1:1,4 to 1:5, the said web being unsupported during the said drawing operation in the drafting unit.
  • the said can spinning spindle generally comprises a I bell-shaped can 2, a distributing tulbular thread guide 3 and a pre-twisting tubular guide 4. These three basic members of the spindle are mounted in one single uprightsupporting bushing, which is denoted as a whole by 5, and is in its turn mounted in a pendulum like antivibrating manner onto the spindle rail 6 of the spinning machine.
  • the bell shaped can 2 is provided with a pulley 7, fixedly secured at its neck, in which is engaged a belt 8 for rotationally driving the said bell-shaped can-2.
  • the thread guide 3 is reciprocated in an upward and downward motion by means of a movable bench 9, which is caused vertically to slide in the spinning machine frame by suitable guide means.
  • the pre-twisting thread guide 4. which is arranged co-axially to the distributing thread guide 3, between this latter and the overlying drafting unit 10, is rotatably suspended by means of a ball bearing 11 from the upperend of the supporting-bushing 5, but is not allowed to slide axially.
  • the lower end of the pre-twisting thread guide 4 is slidably telescoped in the distributing thread guide 3.
  • a pulley 12 for rotatably driving the said thread guide 4,through belt 13.
  • the drafting unit 10 comprises a pair of feed roller 14, and a pair of drawing rollers 15, the drawing rollers 15 being driven ata peripheral speed which is greater than the peripheral speed of the feed rollers 14.
  • 16 is a funnel-shaped guide member, disposed in the path between the feed rollers 14 and the drawing rollers l5.
  • the said contin-' uous strip 17 enters the drafting unit 10 of the spinning spindle from between the feed roller pair 14, and is subjected in the drafting unit to a suitable tensioning by virtue of the different peripheral speed between the feed rollers 14 and the drawing rollers 15.
  • the draw ratio may for instance be of HA, although other ratios may be employed.
  • the strip 17 of slit orientated synthetic plastic material is transformed by effect of the tension applied to it in the drafting unit 10 into a discontinuous fibrillated multifilament sliver 18, which is continuously fed to the pre-twisting tubular guide 4, and then through the distributing thread guide and penetrates into the underlying bell-shaped can 2.
  • the sliver 18 is twisted and is thus made into a yarn 19, which is deposited by centrifugal force onto the inner wall of said can 2, and forms, owing to the upwardly and downwardly reciprocation motion of the distributing thread guide 3 a bobbin 20 in the inside of the bell-shaped can 2.
  • the fixed funnel shaped guide 16 was provided around the sliver 18 in the drafting unit.
  • said guide may however be omitted, and the sliver may be guided by air jets or by the same air flow which is created by the rotating spinning spindle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00316728A 1972-01-22 1972-12-20 Process for the production of yarns Expired - Lifetime US3815350A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT12427/72A IT957289B (it) 1972-01-22 1972-01-22 Procedimento per l ottenimento di filati direttamente da nastri o cor doni multifilamento fibrillati con tinui di materia plastica

Publications (1)

Publication Number Publication Date
US3815350A true US3815350A (en) 1974-06-11

Family

ID=11140013

Family Applications (1)

Application Number Title Priority Date Filing Date
US00316728A Expired - Lifetime US3815350A (en) 1972-01-22 1972-12-20 Process for the production of yarns

Country Status (6)

Country Link
US (1) US3815350A (cg-RX-API-DMAC10.html)
DE (1) DE2302594A1 (cg-RX-API-DMAC10.html)
FR (1) FR2169097B1 (cg-RX-API-DMAC10.html)
GB (1) GB1390481A (cg-RX-API-DMAC10.html)
IT (1) IT957289B (cg-RX-API-DMAC10.html)
NL (1) NL7300910A (cg-RX-API-DMAC10.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1205587A3 (de) * 2000-11-10 2002-12-11 Maschinenfabrik Rieter Ag Verfahren und Vorrichtung zum Spinnen eines Garnes aus reissfähigen Filamenten

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787883A (en) * 1952-12-19 1957-04-09 Gardella Adriano High speed spinning frames
US3382663A (en) * 1964-12-22 1968-05-14 Shell Oil Co Manufacture of fibrillated strands
US3398220A (en) * 1964-06-26 1968-08-20 Parker Pace Corp Process for converting a web of synthetic material into bulk yarns
US3444683A (en) * 1966-07-23 1969-05-20 Barmag Barmer Maschf Manufacture of endless threadlike products of thermoplastic materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787883A (en) * 1952-12-19 1957-04-09 Gardella Adriano High speed spinning frames
US3398220A (en) * 1964-06-26 1968-08-20 Parker Pace Corp Process for converting a web of synthetic material into bulk yarns
US3382663A (en) * 1964-12-22 1968-05-14 Shell Oil Co Manufacture of fibrillated strands
US3444683A (en) * 1966-07-23 1969-05-20 Barmag Barmer Maschf Manufacture of endless threadlike products of thermoplastic materials

Also Published As

Publication number Publication date
NL7300910A (cg-RX-API-DMAC10.html) 1973-07-24
IT957289B (it) 1973-10-10
FR2169097A1 (cg-RX-API-DMAC10.html) 1973-09-07
FR2169097B1 (cg-RX-API-DMAC10.html) 1976-05-14
GB1390481A (en) 1975-04-16
DE2302594A1 (de) 1973-07-26

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