US2681266A - Melt spinning method - Google Patents

Melt spinning method Download PDF

Info

Publication number
US2681266A
US2681266A US178788A US17878850A US2681266A US 2681266 A US2681266 A US 2681266A US 178788 A US178788 A US 178788A US 17878850 A US17878850 A US 17878850A US 2681266 A US2681266 A US 2681266A
Authority
US
United States
Prior art keywords
spinning
melt spinning
spinning method
melting
molten
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
US178788A
Inventor
Kummel 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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Priority to US178788A priority Critical patent/US2681266A/en
Application granted granted Critical
Publication of US2681266A publication Critical patent/US2681266A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/04—Melting filament-forming substances

Definitions

  • This invention relates to an improved method for molten flux spinning of polyamides.
  • the invention relates to a new method for molten flux spinning of plye-aminocaprolactam.
  • the polyamide is molten in a melting device, flows from there into a supply chamber (sump) and goes from there, via a pressure pump and a measuring pump to the spinning nozzle.
  • the entire device is surrounded by a heating jacket which heats the spinning mass to spinning temperature, i. e. to at least 40 C. above the melting point of the polyamide.
  • the temperature of the heating jacket must lie -30 C. higher, or, in all, 60-70 C. above the melting point of the polyamides, and the same temperature obtains in the melting device.
  • Reference No. l is the heating jacket for the melting-device 2 as well as the supply chamber (sump) 3 for the flux supplied by the melting-device 2.
  • the heating of the flux to spinning temperature which is about 250 C., a further thermic reversion of 0.5%.
  • a method of spinning poly-E-amino caprolactam which comprises the steps of melting containing sub- References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,207,426 Bailey July 9, 1940 2,217,743 Greenewalt Oct. 15, 1940 2,241,321 Schlack May 6, 1041 2,514,189 Spencer et al July 4, 1950 2,515,136 Pigott July 11, 1950

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Polyamides (AREA)

Description

June 15, 1954 P. KUMMEL 2,681,266 MELT SPINNING METHOD Filed Aug. 11, 1950 IN V EN T OR. F3404 K071014154 A rroaxvsy Patented June 15, 1954 2,681,266 MELT SPINNING METHOD Paul Kiimmel, Ems, Switzerland, assignor to Inventa A. G. fur Forschung und Patentver- Wertung, Lucerne, Switzerland Application August 11, 1950, Serial No. 178,788
1 Claim.
This invention relates to an improved method for molten flux spinning of polyamides.
More particularly the invention relates to a new method for molten flux spinning of plye-aminocaprolactam.
In the usual apparatus for molten spinning of polyamides, the polyamide is molten in a melting device, flows from there into a supply chamber (sump) and goes from there, via a pressure pump and a measuring pump to the spinning nozzle.
The entire device is surrounded by a heating jacket which heats the spinning mass to spinning temperature, i. e. to at least 40 C. above the melting point of the polyamide. In order to achieve this, the temperature of the heating jacket must lie -30 C. higher, or, in all, 60-70 C. above the melting point of the polyamides, and the same temperature obtains in the melting device.
sump of 550 com). Such a high extract content is not bearable for the production of fibers and threads; the monomers must be subsequently washed out and are lost in the wash-water.
It is necessary to make the sump larger than hitherto usual, so that the molten supply contained therein will be suflicient for spinning about 90 minutes, as only thus will the polymerisate be completely liquified at the low melting temperature.
The accompanying drawing shows schematically a spinning device for molten flux spinning according to the invention. Reference No. l is the heating jacket for the melting-device 2 as well as the supply chamber (sump) 3 for the flux supplied by the melting-device 2.
In the process according to the invention, the
data explain the process in invention:
the heating of the flux to spinning temperature, which is about 250 C., a further thermic reversion of 0.5%.
The process according to the invention, with a spinning extract of 3% as compared with the 5.9% of previous processes, exhibits the important advantage of a smaller reversion of water-soluble monomers of 2.9%, which, in the hitherto practiced processes are lost with the Wash-water.
I claim:
A method of spinning poly-E-amino caprolactam which comprises the steps of melting containing sub- References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,207,426 Bailey July 9, 1940 2,217,743 Greenewalt Oct. 15, 1940 2,241,321 Schlack May 6, 1041 2,514,189 Spencer et al July 4, 1950 2,515,136 Pigott July 11, 1950
US178788A 1950-08-11 1950-08-11 Melt spinning method Expired - Lifetime US2681266A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US178788A US2681266A (en) 1950-08-11 1950-08-11 Melt spinning method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US178788A US2681266A (en) 1950-08-11 1950-08-11 Melt spinning method

Publications (1)

Publication Number Publication Date
US2681266A true US2681266A (en) 1954-06-15

Family

ID=22653951

Family Applications (1)

Application Number Title Priority Date Filing Date
US178788A Expired - Lifetime US2681266A (en) 1950-08-11 1950-08-11 Melt spinning method

Country Status (1)

Country Link
US (1) US2681266A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382305A (en) * 1954-10-29 1968-05-07 Du Pont Process for preparing oriented microfibers

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207426A (en) * 1938-02-26 1940-07-09 Hartford Empire Co Apparatus and method for the preparation and handling of plastic material
US2217743A (en) * 1939-03-28 1940-10-15 Du Pont Apparatus
US2241321A (en) * 1938-06-10 1941-05-06 Ig Farbenindustrie Ag Preparation of polyamides
US2514189A (en) * 1946-11-16 1950-07-04 Method and apparatus for making
US2515136A (en) * 1947-07-18 1950-07-11 Wingfoot Corp Method of melting polymers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2207426A (en) * 1938-02-26 1940-07-09 Hartford Empire Co Apparatus and method for the preparation and handling of plastic material
US2241321A (en) * 1938-06-10 1941-05-06 Ig Farbenindustrie Ag Preparation of polyamides
US2217743A (en) * 1939-03-28 1940-10-15 Du Pont Apparatus
US2514189A (en) * 1946-11-16 1950-07-04 Method and apparatus for making
US2515136A (en) * 1947-07-18 1950-07-11 Wingfoot Corp Method of melting polymers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382305A (en) * 1954-10-29 1968-05-07 Du Pont Process for preparing oriented microfibers
US3546063A (en) * 1954-10-29 1970-12-08 Du Pont Microfibers and shaped structures containing microfibers

Similar Documents

Publication Publication Date Title
US2361717A (en) Process for making polyamides
US2719776A (en) Elimination of monomers from lactampolymerization products
DE69214426D1 (en) DEVICE AND METHOD FOR PRODUCING ORGANIC FIBERS
US2681266A (en) Melt spinning method
US2571975A (en) Melt spinning process
GB930629A (en) Process for the manufacture of spontaneously crimping composite filaments
US2943350A (en) Polyamide melt spinning process and apparatus
US2129213A (en) Manufacture of threads, bands, films, and the like
JPS6440617A (en) Production of filament from resin
JPS52114720A (en) Method for melt spinning
US2161749A (en) Molding process and materials
JPS6392419A (en) Method of molding synthetic resin hollow body
DE19980734D2 (en) Process for processing a molten metal, in particular a light metal melt, as well as encapsulated metering furnace which can be exposed to protective gas
US3720650A (en) Process for preparing sintered powder of polyamide 12
US2978439A (en) Process for the purification of polyamides
EP0141314A2 (en) Process for the preparation of dry polycaprolactam granules
SU1209617A1 (en) Method of producing fibres from glass
SU872274A1 (en) Method of producing tubular articles of concrete mixes
SU1046365A1 (en) Method for finishing fibrous materials
GB708173A (en) Process and apparatus for melt spinning
US3407180A (en) Treatment of polyamides
GB1221123A (en) Improvements in production of shaped articles, such as filaments, from polyamides by melt spinning
Leopold Injection Molding of Polyester BMC/SMC: Screw or Plunger?
GB666378A (en) Improved process for the formation of a band or rod from high-molecular condensation products
IE800092L (en) Producing synthetic fibres