US1834806A - Manufacture of artificial threads - Google Patents

Manufacture of artificial threads Download PDF

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Publication number
US1834806A
US1834806A US258430A US25843028A US1834806A US 1834806 A US1834806 A US 1834806A US 258430 A US258430 A US 258430A US 25843028 A US25843028 A US 25843028A US 1834806 A US1834806 A US 1834806A
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US
United States
Prior art keywords
cells
manufacture
threads
spinning
compartments
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
US258430A
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English (en)
Inventor
Schlack Paul
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.)
Aceta G M B H
ACETA GmbH
Original Assignee
ACETA GmbH
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 ACETA GmbH filed Critical ACETA GmbH
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Publication of US1834806A publication Critical patent/US1834806A/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
    • 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
    • D01D5/04—Dry spinning methods

Definitions

  • the present invention relates to improvements in the manufacture otl articial silk threads by the dry spinning process.
  • the voperation is generally such that the several threads after leaving the nozzles Iare drawn downwards against a current of Awarm air which enters into the spinning cells yat the bottom thereof and lleaves at the upper part laden with vapor of solvent.
  • the spinning can be considerably improved by subdivi'ding each of the spinning cells by a constriction at a suitable level in the cell, so that there are formed two cells, both of which are connected at the upperk end in controllable manner and independently of each other with the suction pipe, the movement of air being sovadjusted that a more or less-large part of the warmed air introduced from below and containing Vmore or less vapor of solvent, if the known circulation is used, is withdrawn from the lower cell so that a comparatively small volume of air laden with vapor of solvent is led through the higher subdivision.
  • the subdivision of the spinning cells may be effected advantageously by movable flaps arranged to form a sort of funnel, so that it is possible to widen the passage for the thread during spinning without damaging the thread.
  • the invention insures that there is only an extremely slight and very uniform movement of air in the upper part of the spinning cell and that the several spinning cells may be put into communication with each other for the purpose of equalizing diiferences of temperature and content of vapor of solvent without objection. It is unimportant whether both parts of the subdivided cell are thus/put into communication with adjacent cells or onlythe upper part; it is in the latter that the physical conditions are of first importance for the properties of the finished fiber.
  • a special advantage of this mode of operating is that even on opening the upper and lower doors of thespinning chamber neither the spinning operation in the cells in question nor the use of the perforated chamber walls of the neighboring cells is markedly affected, especially when the lower cells are separated from each other by walls which are not perforated; this advantage does not exist in the known arrangement.
  • the subdivision of the cells allows for varying the heating in the two parts independently of each other,which is of im portance when silk of ditlerent titer is to be produced by one and the same machine, in which case one must operate under otnerwise similar conditions with different quantities of air.
  • FIG. l is an elevation ot an individual cr
  • Fig. 2 is an elevation in c1 ,ss-section of a number of cells arranged in series so as to form a single operating unit:
  • lig. 3 is a plan view on an enlarged scale of the arrangement ofilaps employed forsubdividing the cell into two compartments.
  • a represents the upper compartment divided from the lower compartment Z) by aps d, turning on hinges o; the opening and the closing of the flaps is effected by any suitable known device7 which, however, is omittedfor the sake of clearness.
  • the Vfilament is extruded through nozzle e and after passing throughthe compartments a and' Z) is withdrawn from the cell below the 4lid over a thread guide n; the upper lid f1 is provided so as to render the nozzle .c easily accessible; g and hare independently regulated heating systems for the cell compartments a and bythe air necessary for drying the laments enters at The major portion is withdrawn at 7c in the neighborhood of the funnel-like aperture vformed by the flaps d, whereas the remainder is withdrawn ⁇ at Z near thek nozzle c.
  • the partitions m between the individual cells effectively prevent circulation of the drying medium in the lower 'part of the cells, i. e. between the individual compartments I).
  • the steps consisting in withdrawing and theother part in proximity to the point of issue of said filaments from the nozzle.
  • Apparatus for the manufacture of artificial silk consisting of a plurality of cells according to claim 3 arranged in series, and means provided' in the walls common to the upper compartments of adjacent cells for communication between said upper comp artments.
  • a i' 6.
  • Y l i Apparatus for the manufacture of artificial silk consisting of a plurality of cells according to claim 8 arranged' in series7 means provided in the walls common to the upper compartments of adjacent cells Yfor communication between saidupper compartments and means for heatingthe upper compartments independently ofV the lower compartments of said cells.
  • y f i Intestimony whereof, I afx my signature.
  • a Vcell for the manufacture of artificial silk threads bythe dry spinning process in which the drying is effected by an ascending *currentofa gaseous medium in counter-current to the silk filaments, comprising a constriction of the drying cell at a medium level of said cell, forming'twocompartments within said cell, means'ffor withdrawing one part of the drying medium at the upper end of the lower compartment'and means for with,- drawing another partof said medium from .the upper compartment in proximityto the point of issue of the filaments from theinozzle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US258430A 1927-03-03 1928-03-01 Manufacture of artificial threads Expired - Lifetime US1834806A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1834806X 1927-03-03

Publications (1)

Publication Number Publication Date
US1834806A true US1834806A (en) 1931-12-01

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ID=7745305

Family Applications (1)

Application Number Title Priority Date Filing Date
US258430A Expired - Lifetime US1834806A (en) 1927-03-03 1928-03-01 Manufacture of artificial threads

Country Status (3)

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US (1) US1834806A (en)van)
BE (1) BE349079A (en)van)
NL (1) NL22770C (en)van)

Also Published As

Publication number Publication date
BE349079A (en)van)
NL22770C (en)van)

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