US2496961A - Process for the production of spinning jets - Google Patents

Process for the production of spinning jets Download PDF

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Publication number
US2496961A
US2496961A US703326A US70332646A US2496961A US 2496961 A US2496961 A US 2496961A US 703326 A US703326 A US 703326A US 70332646 A US70332646 A US 70332646A US 2496961 A US2496961 A US 2496961A
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US
United States
Prior art keywords
orifices
spinning
diameter
jets
production
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
US703326A
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English (en)
Inventor
Schneider George
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.)
Celanese Corp
Original Assignee
Celanese 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 BE476576D priority Critical patent/BE476576A/xx
Application filed by Celanese Corp filed Critical Celanese Corp
Priority to US703326A priority patent/US2496961A/en
Priority to GB23019/47A priority patent/GB648693A/en
Priority to FR953732D priority patent/FR953732A/fr
Priority to DEP14207A priority patent/DE827565C/de
Application granted granted Critical
Publication of US2496961A publication Critical patent/US2496961A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D1/00—Electroforming
    • C25D1/08—Perforated or foraminous objects, e.g. sieves
    • 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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/022—Processes or materials for the preparation of spinnerettes

Definitions

  • This invention relates to the production 'of spinning jets employed for the prepa'rationof artificial filamentary materials by extrusion operations and relates more particularly to the production of spinning jets provided with orifices of extremely fine diameter.
  • An object of this invention is the provision" of a novel process for the production of spinning jets of a relatively inexpensive material, which jets are resistant to corrosion or attack by the spinning solution and the spinningbaths employed for filament-forming extrusion operations.
  • Another object of this invention is the production of spinning jets containing a plurality of extremely fine orifices and adapted to be employed for the formation of artificial fila mentary materials of very fine denier by extrusion operations.
  • Yet another object of this invention is to provide a process for the production of spinning jets which yields jets having orifices of extremely fine diameter without resorting to the very delicate and precise machining, drilling and polishing operations heretofore employed.
  • a further object of this invention is the provision of an electrolytic plating process for the production of spinning jets having jet holes or orifices of any desired diameter.
  • the figure is a view in perspecfive, on an enlarged scale, of aspinning jet or spinneret comprising a shaped hollow cup 1 provided with a lip 2, the lower surface of said cup 1 containing a plurality of orifices 3 of extremely fine diameter through which the filament-form ing material is extruded.
  • Artificial filaments are usually formed by extruding a filament-forming material under pressure through the multiple orifices of a spinneret and then passing the filaments thus formedinto a setting or coagulating medium.
  • the spinneret is usually made of a suitable metal, and the number of filaments formed by extrusion cor responds to the number of orifices present in the jet.
  • the metal employed must be resistant to corrosion or attack by the spinning solution extruded through the orifices as well as resistant to the corrosive effect of the spinning bath in which the filaments are coagulated.
  • spinning jets of precious metals or precious metal alloys are employed whereas in the spinning of filaments having a basis of an organic derivative of cellulose, spinning jets of stainless steel are preferred since they. do not involve such a large capital outlay.
  • spinning jets of stainless steel are preferred since they. do not involve such a large capital outlay.
  • spinning jets containing smooth, uniform orifices of any desired diameter may be obtained in a rapidand economical manner it spinning jets, provided with relatively fine orifices of a diameter greater than that ultimately desired in said jets, are the cathode of an electrolytic plating bath and "current then allowed to flow through the bath so as to cause the deposition of metal on said jets.
  • the external surfaces of said jets receive the metal deposited by the flow of current through the electrolytic plating bath, but the inner surfaces of the orifices themselves, in spite of their very fine diameter, also receive a deposition of metal.
  • the layer of metal deposited in said orifices may be continuously increased in thickness and the final diameter of said orifices reduced to as small a dimension as desired.
  • spinning jets originally having orifices of a drilled and finished diameter of 0.05 millimeter or more may be rapidly and eiiiciently reduced in size to. a diameter of 0.02 millimeter or less, a dimension considerably below that which can be attained emciently by even the most painstaking opera-.
  • the spinning jet treated in accordance with my novel process may be formed of any suitable metal or alloy such as, for example, stainless steel of any composition, nickel, platinum, goldplatinum, gold-rhodium, etc.
  • the metal plated on said spinning jets may be any suitable metal forming a desirably hard, dense and adherent layer when deposited from an electrolytic plating bath.
  • Suitable metals which may be deposited on the internal and external surfaces of the spinning jets to reduce the diameter of the 1'- orifices are, for example, gold, silver, platinum, copper, nickel, palladium, zinc, cadmium, tin or cobalt, but excellent results are obtained when depositing chromium as the plating on the surfaces of said spinning jets, the latter being especially valuable due to its corrosion-resistant properties.
  • a base metal spinnin jet e. g. one of stainless steel
  • chromium for example, the use of corrosion resistant precious metals and precious metal alloys is eliminated.
  • aqueous baths containing from 100 to 400 grams of chromic acid per liter of water, the baths being acidified with from 1 to 4 grams per liter of concentrated sulfuric acid.
  • current densities 100 to 500 amperes per square foot are satisfactory with the plating bath being maintained at temperatures of about 35 to 55 C. and, preferably, about f15 C. during the plating operation;
  • the anod may-be steel or lead and the voltage necessary is usually about 5 to 10 volts.
  • specially shaped anodes are not necessary to achieve the necessary throw. Th platin action is continued until the thickness of the metal deposited on the external surfaces of the jet and within the orifices has reduced-the latter to the desired fine diameter.
  • Example A stainless steel spinning jet containing .42 orifices each of 0.052 mm. in diameter is immersed 4 as the cathode in an aqueous plating bath containing 125 grams per liter of chromic acid and 1 gram per liter of concentrated sulfuric acid.
  • an aqueous plating bath containing 125 grams per liter of chromic acid and 1 gram per liter of concentrated sulfuric acid.
  • the orifices are each reduced to a diameter of 0.028 mm. after about one hour.
  • the internal surfaces are smooth, hard and highly resistant to scratching.
  • the orifices may be altered to any desired diameter.
  • the plated spinning jet is highly resistant to corrosion.
  • Process for the production of spinning jets having a plurality of extremely fine orifices adapted for filament-forming operations which comprises forming in a spinning jet of a conducting material a plurality of orifices having a diameter of about 0.052 millimeter, immersing said spinning jet in an electrolytic plating bath comprising an acidified solution of chromic acid, and electroplatin th internal and external surfaces of said spinning jet with a layer of chromium until the orifices are reduced to a diameter of about 0.028 millimeter.
  • Process for the production of spinning jets having a plurality of extremely fine orifices adapted for filament-forming operations which comprises forming in a stainless steel spinning jet a plurality of orifices having a diameter of about 0.052 millimeter, immersing said spinning jet in an electrolyticplating bath, and electroplating the internal and external surfaces of said spinning jet with a layer of metal until the orifices are reduced to a diameter of about 0.028
  • Process for the production of spinning jets having a plurality of extremely fine orifices adapted for filament-forming operations which comprises forming in a stainless steel spinning jet a plurality of orifices havinga diameter of about 0.052 millimeter, immersing said spinning jet as the cathode in an electrolytic plating bath comprising a solution of from to 400 grams per liter of chromic acid acidified with 1 to 4 grams per liter of concentrated sulfuric acid, and plat.- ing the internal and external surfaces of said spinning jet with a layer of chromium employing a current density of 100 to 500 amperes per squarefoot and a lead anode until the orifices are reduced to a diameter of about 0.028 millimeter.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Electroplating Methods And Accessories (AREA)
US703326A 1946-10-15 1946-10-15 Process for the production of spinning jets Expired - Lifetime US2496961A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE476576D BE476576A (zh) 1946-10-15
US703326A US2496961A (en) 1946-10-15 1946-10-15 Process for the production of spinning jets
GB23019/47A GB648693A (en) 1946-10-15 1947-08-16 Spinning jets for the manufacture of artificial filaments
FR953732D FR953732A (fr) 1946-10-15 1947-10-04 Filière
DEP14207A DE827565C (de) 1946-10-15 1948-10-02 Verfahren zur Herstellung metallener Spinnduesen mit feinen OEffnungen zur Herstellung kuenstlicher Faeden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US703326A US2496961A (en) 1946-10-15 1946-10-15 Process for the production of spinning jets

Publications (1)

Publication Number Publication Date
US2496961A true US2496961A (en) 1950-02-07

Family

ID=24824955

Family Applications (1)

Application Number Title Priority Date Filing Date
US703326A Expired - Lifetime US2496961A (en) 1946-10-15 1946-10-15 Process for the production of spinning jets

Country Status (5)

Country Link
US (1) US2496961A (zh)
BE (1) BE476576A (zh)
DE (1) DE827565C (zh)
FR (1) FR953732A (zh)
GB (1) GB648693A (zh)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595216A (en) * 1948-06-05 1952-05-06 Du Pont Spinnerets coated by metal evaporation
US2662852A (en) * 1948-12-29 1953-12-15 Bell Telephone Labor Inc Preparation of two-sided mosaic screen
US3044155A (en) * 1957-08-02 1962-07-17 Engelhard Ind Inc Spinnerette
US3121763A (en) * 1960-07-14 1964-02-18 Glanzstoff Ag Process for reducing the thermal decomposition of molten polyhexamethylene-adipamide
CN105074062A (zh) * 2013-02-26 2015-11-18 三菱丽阳株式会社 纺丝喷嘴、纤维集合体的制造方法、纤维集合体及纸

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE877186C (de) * 1939-01-14 1953-05-21 Kortenbach & Rauh Kg Schirmgestell

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190416652A (en) * 1904-07-28 1905-07-06 Charles Ebenezer Challis Improvements in or relating to Filters Filtering Media and Matters appertaining thereto.
GB142038A (en) * 1919-10-06 1920-04-29 Carolus Lambertus Stulemeyer Method and means for the manufacture of artificial silk
DE461135C (de) * 1924-09-27 1928-06-15 Ernst Diepschlag Dipl Ing Verfahren zur Herstellung feinporiger Drahtgeflechtfilter
US1792197A (en) * 1929-05-15 1931-02-10 Swifton Mfg Company Foraminous material and method of making the same
US2086067A (en) * 1935-08-22 1937-07-06 Ralph E Cleveland Screen plate for paper making machines
US2226381A (en) * 1938-04-22 1940-12-24 Edward O Norris Inc Process of producing electrolytic foraminous sheets
US2283169A (en) * 1939-05-13 1942-05-19 Atlantic Res Associates Inc Spinning fibers
US2352968A (en) * 1941-12-16 1944-07-04 Union Screen Plate Company Method of making paper pulp screen plates
US2362277A (en) * 1939-01-05 1944-11-07 Baker & Co Inc Spinnerette
US2370765A (en) * 1939-08-15 1945-03-06 Nat Dairy Prod Corp Spinnerette
US2392871A (en) * 1939-07-08 1946-01-15 Richard M Wick Chromium plating

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190416652A (en) * 1904-07-28 1905-07-06 Charles Ebenezer Challis Improvements in or relating to Filters Filtering Media and Matters appertaining thereto.
GB142038A (en) * 1919-10-06 1920-04-29 Carolus Lambertus Stulemeyer Method and means for the manufacture of artificial silk
DE461135C (de) * 1924-09-27 1928-06-15 Ernst Diepschlag Dipl Ing Verfahren zur Herstellung feinporiger Drahtgeflechtfilter
US1792197A (en) * 1929-05-15 1931-02-10 Swifton Mfg Company Foraminous material and method of making the same
US2086067A (en) * 1935-08-22 1937-07-06 Ralph E Cleveland Screen plate for paper making machines
US2226381A (en) * 1938-04-22 1940-12-24 Edward O Norris Inc Process of producing electrolytic foraminous sheets
US2362277A (en) * 1939-01-05 1944-11-07 Baker & Co Inc Spinnerette
US2283169A (en) * 1939-05-13 1942-05-19 Atlantic Res Associates Inc Spinning fibers
US2392871A (en) * 1939-07-08 1946-01-15 Richard M Wick Chromium plating
US2370765A (en) * 1939-08-15 1945-03-06 Nat Dairy Prod Corp Spinnerette
US2352968A (en) * 1941-12-16 1944-07-04 Union Screen Plate Company Method of making paper pulp screen plates

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2595216A (en) * 1948-06-05 1952-05-06 Du Pont Spinnerets coated by metal evaporation
US2662852A (en) * 1948-12-29 1953-12-15 Bell Telephone Labor Inc Preparation of two-sided mosaic screen
US3044155A (en) * 1957-08-02 1962-07-17 Engelhard Ind Inc Spinnerette
US3121763A (en) * 1960-07-14 1964-02-18 Glanzstoff Ag Process for reducing the thermal decomposition of molten polyhexamethylene-adipamide
CN105074062A (zh) * 2013-02-26 2015-11-18 三菱丽阳株式会社 纺丝喷嘴、纤维集合体的制造方法、纤维集合体及纸

Also Published As

Publication number Publication date
FR953732A (fr) 1949-12-12
DE827565C (de) 1952-01-10
GB648693A (en) 1951-01-10
BE476576A (zh)

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