US2658254A - Rayon spinning machinery - Google Patents

Rayon spinning machinery Download PDF

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Publication number
US2658254A
US2658254A US141712A US14171250A US2658254A US 2658254 A US2658254 A US 2658254A US 141712 A US141712 A US 141712A US 14171250 A US14171250 A US 14171250A US 2658254 A US2658254 A US 2658254A
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US
United States
Prior art keywords
godet
thread
inch
spinning
bars
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
US141712A
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English (en)
Inventor
John H Givens
Rose Leslie
Eric J Whyte
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.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
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 Courtaulds PLC filed Critical Courtaulds PLC
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Publication of US2658254A publication Critical patent/US2658254A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B05D7/08—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood using synthetic lacquers or varnishes
    • 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
    • D01D5/06—Wet spinning methods
    • 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
    • D01D7/00—Collecting the newly-spun products
    • D01D7/02—Collecting the newly-spun products in centrifugal spinning pots

Definitions

  • Claixii fifierity application Great Britain March 14, 1949 I .
  • This invention relates to rayon spinning macli'i'nry.
  • p I I the premise-eh of artificial threads by the b'oir spihiiifig pfiiss, a thread-farming stilu'ti'on such as viseese is eiitfud d through fa; jet into a coagulating me ium and the 'fil'aiiient's; so formed are withdrawn by means for godets and are then passed by means of a ream-eatin guideinto a rotating spinning; be)?
  • geaets hitherto employed have usually'be'en corrugated so that the ridges and the ereeves between successive ridges have approximately the same'tv'idth; Withhigh spinnin speeds, that is to say speeds of the order of 90 metres per minute or "more, and using conventional godets, it is not always easy for the opera tive toset-up thethre'ad, that isto pass the thread from the go'det into the spinning box via the re; cip'rocating funnel dr oftlier guideused to lay the thread in the beat.
  • the cohesion between the thread and the'convlefitional godet-athighspeeds is usually so great that in the short time interval available betweeri' ta ing the thread from the g'ode't and the 'initia Idfi'of'the pull of th box to start the spinning steeess the thread licks under the godetand th atteniptee settmg' u fails
  • Theeb 'eet-of the-present 'invention is ta pm; vide an improved design of godet or equivalent thread take-spam del itry device w'mehf'acili tates the setting upo'f the threadat high speeds.
  • th'e'p siitinvehtion consist of a rotatablethread' takeupanddelivery device cofnf prising at least twenty thread-supporting bar's arranged substantially uniformly around and equidistant-from the-centre of rotation of the device; the thread-supporting surface of each bar being not greater than 0.1 of an inch in width at'the point at whi'lrthe thread leaves the device and the pitch of the-bars; that is the distance between the centres of successive bars, being from 0.5 of an inch to 2 inches.
  • the take-up and-deliverydevice acddrdiii'g to the invention is preferably a godet but the device may be formed by a number of circumferential bars carried by a spider mounted on the driving shaft of the device.
  • the bars of the device are preferably of uniform width along their whole length but if de- 3 Claims. (Giza-71. 5)
  • the number of bars at the take-up end may also be difierent from the number of bars at th dis herg'e end.
  • The' inven'tio'n also includes a pretes tel-the p o uctions: rayon thread in cake term" by ex tradi a threa -turning 'sblutieii thrdiigh a jet into a oagu aht and passing the r sulting filaments to such a thread take-11 5 andneh'very device and then we reta'tihg'spinmhg be at a speed of atleast 90 etres per' minute byniea'fis 6f areeiprocatmg funnel.
  • Thdviee Inay therefdre a so pe used infthe spihniiigfir thick cakes of I ghtdehier marneht threads fer example of filament/60 denier threads, tli out the pr mature teakdewn whieh often "i curs when the ee t imga p 11 ;rrorh the r atirig .7 n wh l spinning 60 filament/60 denier threads and using a conventional godet the collecting period for thecake is usually of theorderof 1 5 to ,1 6 h0urs whereasusiing g'eiaets according to the iiivfhti'on, collecting times of s etrs'ermert may" be used.
  • the thread take-jun andd'elivery device at:
  • cording to the inventioiifiiay be used withhd vantage wit 'the' spih ihg'rhaehihes d e d in" the speetfiea iehs; or; eepehtiing app 10a ons SerialjNo'S'. 255,388gfi efclj ,NoYfember s; 1951, and 263,563,jfiled eee hjer 27,1951, now rateiitsndsz 253;,69'3'antrzgssasee, tespeet1ve1y.
  • I j rhepres nt invention is illustrated by war 6: example in the accompanying diagrammatic drawingsintvhich A I f 1.
  • the godet 6 is provided with a conventional flange 9 and has thirty-six circumferential bars l separated by thirty-six grooves H.
  • the width of each bar l0 at its tip is 0.05 inch
  • the height of each bar is approximately /8 inch and the overall diameter of the godet is 6% inches
  • the pitch of the bars in this specific godet is 0.59 inch
  • the width of the grooves H is 0.54 inch.
  • the godet is conveniently about 3 inches long.
  • Example 1 Viscose, containing 7.5 per cent of cellulose and 6.0 per cent of caustic soda, and aged to a salt point of 5.5, was extruded through a jet having 18 holes each of 3 thousandths of an inch diameter into a coagulant bath at 60 centigrade to form a '75 denier thread.
  • the coagulant bath contained per cent of sulphuric acid, 19 per cent of sodium sulphate and 1 per cent of zinc sulphate. After passing through the bath for about 10 inches, the thread was withdrawn from the bath at a speed of 80 metres per minute by means of a godet of conventional design.
  • the thread was lapped round the conventional godet two and a half times and was then passed at a speed of 100 metres per minute to the godet described above having 36 teeth & of an inch wide, the thread being lapped round this godet also two and a half times.
  • the thread was then collected by means of a reciprocating glass funnel in a box of 6% inches diameter and rotating at 7.000 revolutions per minute.
  • Example 2 Viscose containing 7.5 per cent of cellulose, 6.0 per cent of caustic soda and aged to a salt point of 5.5, was extruded through a, jet having 60 holes, each having a diameter of 2 /2 thousandths of an inch, into a coagulating bath at 60 centigrade containing 9 per cent of sulphuric acid, 20 per cent of sodium sulphate and 1 per cent of zinc sulphate. After passing through the bath for a distance of 4 inches, the thread was withdrawn at a speed of 50 metres per minute by means of a conventional godet and passed at a speed of 62 metres per minute to a second godet as described above having a diameter of 6% inches and provided with 36 teeth each & of an inch wide.
  • the thread of 60 denier, was passed from the second godet by means of a reciprocating funnel 9 inches long having four internal constrictions each 0.12 inch in diameter, and an orifice of 0.10 inch in diameter to a rotating centrifugal box 6 inches in diameter and rotating at 7.000 revolutions per minute. Under these conditions. spinning breakdown occurred after 19 V hours.
  • the cake so produced was suiliciently thick in its walls to stand up to the pressure of a standard cake-washing machine.
  • the marked advantage in using the godet according to the invention may be judged by the following results obtained on a machine having 10 spinning ends similar to those described in Example 2, the machine being run continuously for one month. 1
  • the godet used in the above examples may be replaced by a godet having an overall diameter of 7 inches and having 40 bars on its circumference, each bar being 0.05 inch in width and the pitch of the bars being 0.55 inch.
  • a godet for high speed spinning into s. rotating spinning box having thirty-six to forty thread-supporting bars arranged substantially uniformly around and equidistant from the centre of rotation of the godet, the width of the thread-supporting surface of each bar being 0.05 of an inch and the pitch of the bars being from about 0.55 to about 0.59 inch, whereby licking under of the yarn during settin up is avoided.
  • a godet for high speed spinning into a rotating spinning box having forty thread-supporting bars arranged substantially uniformly around and equidistant from the centre of rotation of the godet. the width of the thread-supporting surface of each bar being 0.05 of an inch and the pitch of the bars being .055 inch, whereby licking under of the yarn during setting up is avoided.
  • a godet for high speed spinning into a rotating spinning box having thirty-six threadsupporting bars arranged substantially uniformly around and equidistant from the centre of rotation of the godet, the width of the thread-supporting surface of each bar being 0.05 of an inch and the pitch of the bars being about 0.59 inch. whereby licking under of the yarn during setting up is avoided.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Artificial Filaments (AREA)
US141712A 1949-03-14 1950-02-01 Rayon spinning machinery Expired - Lifetime US2658254A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB281390X 1949-03-14

Publications (1)

Publication Number Publication Date
US2658254A true US2658254A (en) 1953-11-10

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ID=10270856

Family Applications (1)

Application Number Title Priority Date Filing Date
US141712A Expired - Lifetime US2658254A (en) 1949-03-14 1950-02-01 Rayon spinning machinery

Country Status (5)

Country Link
US (1) US2658254A (en, 2012)
BE (1) BE493971A (en, 2012)
CH (1) CH281390A (en, 2012)
FR (1) FR1014155A (en, 2012)
NL (1) NL76646C (en, 2012)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788256A (en) * 1952-06-02 1957-04-09 American Viscose Corp Method of spinning filamentary strands
US3139226A (en) * 1954-12-20 1964-06-30 Owens Corning Fiberglass Corp Apparatus for feeding a continuous untwisted multifilament strand
US4349161A (en) * 1978-09-27 1982-09-14 Aktiebolaget Iro Thread delivery device with improved thread-storage drum, particularly for sticky yarns

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE529284A (en, 2012) * 1954-02-11

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259202A (en) * 1938-03-16 1941-10-14 Tubize Chatillon Corp Thread control device for rayon spinning machines

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2259202A (en) * 1938-03-16 1941-10-14 Tubize Chatillon Corp Thread control device for rayon spinning machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788256A (en) * 1952-06-02 1957-04-09 American Viscose Corp Method of spinning filamentary strands
US3139226A (en) * 1954-12-20 1964-06-30 Owens Corning Fiberglass Corp Apparatus for feeding a continuous untwisted multifilament strand
US4349161A (en) * 1978-09-27 1982-09-14 Aktiebolaget Iro Thread delivery device with improved thread-storage drum, particularly for sticky yarns

Also Published As

Publication number Publication date
NL76646C (en, 2012)
BE493971A (en, 2012)
CH281390A (de) 1952-03-15
FR1014155A (fr) 1952-08-11

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