US2030985A - Method for producing artificial silk - Google Patents

Method for producing artificial silk Download PDF

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Publication number
US2030985A
US2030985A US555306A US55530631A US2030985A US 2030985 A US2030985 A US 2030985A US 555306 A US555306 A US 555306A US 55530631 A US55530631 A US 55530631A US 2030985 A US2030985 A US 2030985A
Authority
US
United States
Prior art keywords
roller
filament
thread
spinning
centrifuge
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
US555306A
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English (en)
Inventor
Hartmann August
Bauriedel Gotthard
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.)
AMERICAN BEMBERG Corp
Original Assignee
AMERICAN BEMBERG 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
Priority to BE337747D priority Critical patent/BE337747A/xx
Priority claimed from DEB124781D external-priority patent/DE549408C/de
Priority to GB24333/26A priority patent/GB260564A/en
Priority to FR623745D priority patent/FR623745A/fr
Priority claimed from US145159A external-priority patent/US1939300A/en
Priority to US145159A priority patent/US1939300A/en
Priority to GB8543/27A priority patent/GB268393A/en
Priority to US555306A priority patent/US2030985A/en
Application filed by AMERICAN BEMBERG CORP filed Critical AMERICAN BEMBERG CORP
Priority to US696310A priority patent/US2146737A/en
Publication of US2030985A publication Critical patent/US2030985A/en
Application granted granted Critical
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
    • D01D5/12—Stretch-spinning methods
    • D01D5/14—Stretch-spinning methods with flowing liquid or gaseous stretching media, e.g. solution-blowing
    • 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

  • the centrifuge has the advantage that with it it is possible in one operation to obtain a filament which can be wound onto the reel and is twisted in a manner rendering it immediately capable of being used.
  • the filament is introduced from above into a spinning centrifuge which is rotating at a suitably rapid speed, the filament, owing to centrifugal force, being thrown against the wall of the drum while being simultaneously twisted and collected there in crossed layers in the form of a so-called spinning cake.
  • the cuprammonium silk is produced in a stretch spinning vessel, called, in short, a funnel.
  • a neutral or slightly alkaline bath is used as a rule as a precipitant.
  • the filaments produced in this manner and still containing copper were hitherto collected on reels, rollers, bobbins or the like and acidified with dilute acid, before, or on the reel, rollers, bobbin or the like.
  • the invention consists in a process for manufacturing twisted artificial silk from cuprammonium cellulose solutions in which the filament after leaving the spinning device is acidified under tension and thereafter is drawn in and twisted by a so-called spinning centrifuge.
  • the path of the filament from the spinning vessel to the centrifuge can be extended. This may be done by suitable arrangement of the drawing rollers, for in stance by placing the rollers in an elevated position so that the filament is first raised from the acid bath and then descends to the centrifuge. It is also possible to lead the filament around the drawing roller and so elongatethe path.
  • the drawing or delivery rollers may be smooth, ribbed o-r serrated. They may be made of glass, porcelain, soft or hard rubber and other acidresisting materials, the same applying to any guiding rollers.
  • Figure 1 shows a device with an elevated drawing roller.
  • Figure 2 a device in which the filament passes completely around the drawing roller.
  • Figure 3 a device with a pressing roller and Figure 4 a device With a drawing roller of increased diameter of special material.
  • the acid vessel 6 has the form however of an inclined gutter upon which fall drops of acid.
  • the guiding roller 5 may in some circumstances be omitted. Instead of treating the moving filament with acid at the reversing rod 3 or on the way from this rod to the delivery roller 1, a satisfactory result is also obtained if the delivery roller 1 revolves in dilute acid or if acid is allowed to trickle over it, and it is of advantage if some acid runs back along the filament towards the reversing rod 3.
  • the filament running onto the delivery roller must be treated with acid or acid allowed to trickle over it.
  • the delivery roller 1 it is preferable to provide the delivery roller 1 with a filament guide or a reversing rod 3 having a braking action upon the speed at which the filament is taken off, sothat the filament is subjected to a definite high tension between filament guide or reversing rod and delivery roller, and it has been found especially advantageous to acidify the filament at this point and under the tension produced in this way.
  • This tension can be varied by suitably shaping the filament guide or the reversing rod.
  • This tension of the filament may also be increased by inserting suitable guiding or tension rollers 5. The tension can be increased in this way as desired, but has a definite limit, as the filament may otherwise be damaged by the numerous friction points.
  • FIG 4 is shown a device according to the invention in which the angle of contact between the filament of the delivery roller 1 is comparatively small but the diameter of roller 1 is so increased that the length of contact between the filament and the roller is suflicient to prevent slipping of the filament in the roller 1.
  • the roller 1 in Figure 4 may also be made of special more adhesive material or may have a covering of such materials.
  • rubber is a suitable material, but also other acid proof adhesive materials may be used, for instance artificial resin or phenol formaldehyde, condensation products or mixtures from these materials with other acid proof materials, also for such materials a relatively small angle or length of contact is sufiicient to ensure the necessary friction and to prevent slipping.
  • the herein described method of producing artificial silk which consists in passing cuprammonium cellulose solutions in the form of filaments through a flowing coagulating bath while stretching the same, thereafter acidifying the filaments thus produced while subjecting them to a further stretching, and twisting the same into a spinning centrifuge.
  • the herein described method of producing artificial silk which consists in passing cuprammonium cellulose solutions in the form of filaments through a flowing coagulating bath while stretching the same, thereafter acidifying the filaments thus produced while stretching them under a uniform further tension and twisting the same into a centrifuge.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US555306A 1925-11-02 1931-08-05 Method for producing artificial silk Expired - Lifetime US2030985A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE337747D BE337747A (enrdf_load_stackoverflow) 1925-11-02
GB24333/26A GB260564A (en) 1925-11-02 1926-10-01 An improved method of and apparatus for producing twisted artificial silk from cuprammonium cellulose solutions according to the wet stretch-spinning process
FR623745D FR623745A (fr) 1925-11-02 1926-10-27 Procédé et dispositif pour la préparation de la soie artificielle cuproammoniacale à fil retors
US145159A US1939300A (en) 1925-11-02 1926-10-30 Apparatus for producing artificial silk
GB8543/27A GB268393A (en) 1925-11-02 1927-03-28 An improved process for the manufacture of twisted artificial silk from cuprammonium cellulose solutions by the stretch-spinning process
US555306A US2030985A (en) 1925-11-02 1931-08-05 Method for producing artificial silk
US696310A US2146737A (en) 1925-11-02 1933-11-02 Method and apparatus for producing artificial silk

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DEB0122498 1925-11-02
DEB124781D DE549408C (de) 1926-03-27 1926-03-27 Vorrichtung zur Herstellung gezwirnter Kunstseide aus Kupferoxydammoniakcelluloseloesung nach dem Nassstreckverfahren
US145159A US1939300A (en) 1925-11-02 1926-10-30 Apparatus for producing artificial silk
US555306A US2030985A (en) 1925-11-02 1931-08-05 Method for producing artificial silk
US696310A US2146737A (en) 1925-11-02 1933-11-02 Method and apparatus for producing artificial silk

Publications (1)

Publication Number Publication Date
US2030985A true US2030985A (en) 1936-02-18

Family

ID=32512607

Family Applications (2)

Application Number Title Priority Date Filing Date
US555306A Expired - Lifetime US2030985A (en) 1925-11-02 1931-08-05 Method for producing artificial silk
US696310A Expired - Lifetime US2146737A (en) 1925-11-02 1933-11-02 Method and apparatus for producing artificial silk

Family Applications After (1)

Application Number Title Priority Date Filing Date
US696310A Expired - Lifetime US2146737A (en) 1925-11-02 1933-11-02 Method and apparatus for producing artificial silk

Country Status (4)

Country Link
US (2) US2030985A (enrdf_load_stackoverflow)
BE (1) BE337747A (enrdf_load_stackoverflow)
FR (1) FR623745A (enrdf_load_stackoverflow)
GB (2) GB260564A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
GB268393A (en) 1927-10-20
BE337747A (enrdf_load_stackoverflow)
US2146737A (en) 1939-02-14
FR623745A (fr) 1927-06-29
GB260564A (en) 1927-10-13

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