US3817680A - Synthetic fiber spinning plate with colummar coating layer - Google Patents

Synthetic fiber spinning plate with colummar coating layer Download PDF

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Publication number
US3817680A
US3817680A US00293994A US29399472A US3817680A US 3817680 A US3817680 A US 3817680A US 00293994 A US00293994 A US 00293994A US 29399472 A US29399472 A US 29399472A US 3817680 A US3817680 A US 3817680A
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US
United States
Prior art keywords
spinning
plate
layer
spinning plate
crystalline
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
US00293994A
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English (en)
Inventor
W Gultner
W Hohmann
R Ruthardt
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.)
WC Heraus GmbH and Co KG
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WC Heraus GmbH and Co KG
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 WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Application granted granted Critical
Publication of US3817680A publication Critical patent/US3817680A/en
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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
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/022—Processes or materials for the preparation of spinnerettes

Definitions

  • liquid polymers are extruded in normal spinning direction from the spinning ducts of the spinning plate.
  • the nozzle end of the spinning ducts is subject to disturbances, and the spinning process is subject to disturbances.
  • the melted polymers deviate substantially from the directed flow, drips of liquid, melted polymers may form, resulting in an interruption of the spinning process. Deviation from the spinning path, and migration of the melted polymers can be observed particularly when the laminar flow at the terminal edge of a spinning duct is disturbed by irregularities in the geometry at the exit edges, or by wetting of the limit or terminal zone of the exit end of a spinning duct.
  • Platinum-type metals are the metals platinum, palladium, rhodium, iridium, ruthenium and osmium.
  • the thickness of the layer of crystal columns is about between 6 to 12 pm.
  • the crystals of this layer have a preferred orientation perpendicular to the surface of the spinning plate.
  • the end terminal of the spinning duct has a crystalline metallic structure which is columnar and oriented in the direction of flow of the organic polymers, which thus do not interfere with laminar flow of the liquid polymers eminating from the duct in the spinning plate.
  • the crystalline layer In a plane parallel to the spinning plate, the crystalline layer has a fine crystalline surface structure, which, based on its fine crystalline structure effectively prevents wetting of the surface with the melted liquid polymers at the surface.
  • the columnar crystalline structure, parallel to flow direction and at the exit ends of the ducts is coarsely crystalline, however.
  • the crystalline layer can be so made that at least one metal of the group aforesaid is precipitated in a vacuum of less than 10 mm Hg, by condensation from the gaseous phase, on the surface of the spinning plate.
  • the metal is vaporized on the spinning plate at the pressure of less than 10 mm Hg.
  • the spinning plate is maintained at a temperature of at least C during the coating process.
  • FIGURE is a schematic transverse sectional view through a spinning plate.
  • the spinning plate 1 is made of steel and is formed with a plurality of spinning ducts 2, adapted to be connected to a source of melted polymer, not shown.
  • the liquid melted organic polymer passes through the spinning duct in the direction of the arrows 3.
  • the surface of the spinning plate from which the melted organic polymers exit, or emanate is coated with a crystalline layer 4 which consist essentially of adjacent crystal columns extending at right angles to the surface of the spinning plate 1.
  • the crystal columns are so arranged that the crystalline layer 4, in a plane parallel to the surface of the spinning plate, exhibits a fine crystalline crystal structure.
  • Synthetic fiber spinning plate comprising a structural plate formed with spinning ducts extending through the plate in a direction transverse to the plate surface, and a non isotropic coating layer of adjacent crystalline columns, of a thickness in the order of between 220 mm, said layer having a coarse columnar crystalline structure parallel to the direction of the spinning ducts at the exit ends columns are made of a material comprising at least one of the metals of the group of titanium, niobium, vanadium or chromium.
  • platinum metals comprise at least one of the metals of the group of platinum, palladium, rhodium, iridium, ruthenium and osmium.
US00293994A 1971-09-30 1972-10-02 Synthetic fiber spinning plate with colummar coating layer Expired - Lifetime US3817680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2148773A DE2148773B2 (de) 1971-09-30 1971-09-30 Spinndüsenplatte zum Verspinnen organischer Polymerer

Publications (1)

Publication Number Publication Date
US3817680A true US3817680A (en) 1974-06-18

Family

ID=5821016

Family Applications (1)

Application Number Title Priority Date Filing Date
US00293994A Expired - Lifetime US3817680A (en) 1971-09-30 1972-10-02 Synthetic fiber spinning plate with colummar coating layer

Country Status (9)

Country Link
US (1) US3817680A (de)
JP (1) JPS4842119A (de)
AT (1) AT326260B (de)
CH (1) CH542293A (de)
DE (1) DE2148773B2 (de)
FR (1) FR2154706B1 (de)
GB (1) GB1387348A (de)
IT (1) IT966085B (de)
NL (1) NL7213169A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137032A (en) * 1976-09-07 1979-01-30 E. I. Du Pont De Nemours And Company Corrosion-resistant spinneret
US4576811A (en) * 1983-11-03 1986-03-18 E. I. Du Pont De Nemours And Company Process for adjusting the fiber structure of mesophase pitch fibers
US6527532B1 (en) * 1995-12-27 2003-03-04 Trex Company, L.L.C. Apparatus for making a wood-plastic profile
US20040253027A1 (en) * 2003-06-10 2004-12-16 Canon Kabushiki Kaisha Heating apparatus and image heating apparatus
US20050218279A1 (en) * 2004-04-01 2005-10-06 Cicenas Chris W Methods and apparatuses for assembling railings
US20050266210A1 (en) * 2004-06-01 2005-12-01 Blair Dolinar Imprinted wood-plastic composite, apparatus for manufacturing same, and related method of manufacture
US20070134478A1 (en) * 2003-12-20 2007-06-14 Corovin Gmbh Polyethylene-based, soft nonwoven fabric
US7410687B2 (en) 2004-06-08 2008-08-12 Trex Co Inc Variegated composites and related methods of manufacture

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003136A1 (de) * 1980-01-29 1981-07-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zum herstellen von thermisch stabilen, metallischen schichten
JPS60139821A (ja) * 1983-12-28 1985-07-24 Katsutoshi Aoki 炭素繊維紡出装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848737A (en) * 1952-07-18 1958-08-26 Firestone Tire & Rubber Co Extrusion die
US3573092A (en) * 1968-04-01 1971-03-30 Fansteel Inc Method for introducing carbon into chemical vapor deposited refractory metal,and resulting product

Family Cites Families (2)

* 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
JPS5338326B2 (de) * 1971-08-26 1978-10-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848737A (en) * 1952-07-18 1958-08-26 Firestone Tire & Rubber Co Extrusion die
US3573092A (en) * 1968-04-01 1971-03-30 Fansteel Inc Method for introducing carbon into chemical vapor deposited refractory metal,and resulting product

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137032A (en) * 1976-09-07 1979-01-30 E. I. Du Pont De Nemours And Company Corrosion-resistant spinneret
US4576811A (en) * 1983-11-03 1986-03-18 E. I. Du Pont De Nemours And Company Process for adjusting the fiber structure of mesophase pitch fibers
US6527532B1 (en) * 1995-12-27 2003-03-04 Trex Company, L.L.C. Apparatus for making a wood-plastic profile
US20040253027A1 (en) * 2003-06-10 2004-12-16 Canon Kabushiki Kaisha Heating apparatus and image heating apparatus
US20090133813A1 (en) * 2003-12-20 2009-05-28 Fiberweb Corovin Gmbh Method for the manufacture of polyethylene-based, soft nonwoven fabric
US8420557B2 (en) 2003-12-20 2013-04-16 Fiberweb Corovin Gmbh Polyethylene-based, soft nonwoven fabric
US20070134478A1 (en) * 2003-12-20 2007-06-14 Corovin Gmbh Polyethylene-based, soft nonwoven fabric
US20090136606A1 (en) * 2003-12-20 2009-05-28 Fiberweb Corovin Gmbh Device for the manufacture of polyethylene-based, soft nonwoven fabric
US20050218279A1 (en) * 2004-04-01 2005-10-06 Cicenas Chris W Methods and apparatuses for assembling railings
US20060113441A2 (en) * 2004-04-01 2006-06-01 Trex Company, Inc. Methods and Apparatuses for Assembling Railings
US20060078713A1 (en) * 2004-06-01 2006-04-13 Trex Company, Inc. Imprinted wood-plastic composite, apparatus for manufacturing same, and related method of manufacture
US20050266210A1 (en) * 2004-06-01 2005-12-01 Blair Dolinar Imprinted wood-plastic composite, apparatus for manufacturing same, and related method of manufacture
US7410687B2 (en) 2004-06-08 2008-08-12 Trex Co Inc Variegated composites and related methods of manufacture

Also Published As

Publication number Publication date
CH542293A (de) 1973-09-30
IT966085B (it) 1974-02-11
FR2154706A1 (de) 1973-05-11
JPS4842119A (de) 1973-06-19
ATA838972A (de) 1975-02-15
AT326260B (de) 1975-12-10
DE2148773A1 (de) 1973-04-12
NL7213169A (de) 1973-04-03
FR2154706B1 (de) 1976-08-13
DE2148773B2 (de) 1975-07-31
GB1387348A (en) 1975-03-19

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