US3487144A - Apparatus and method for cooling extruded molten filaments - Google Patents

Apparatus and method for cooling extruded molten filaments Download PDF

Info

Publication number
US3487144A
US3487144A US695604A US3487144DA US3487144A US 3487144 A US3487144 A US 3487144A US 695604 A US695604 A US 695604A US 3487144D A US3487144D A US 3487144DA US 3487144 A US3487144 A US 3487144A
Authority
US
United States
Prior art keywords
filaments
cooling
quenching
enclosure
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
US695604A
Other languages
English (en)
Inventor
Arlen K Sarian
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.)
FMC Corp
Original Assignee
FMC 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
Application filed by FMC Corp filed Critical FMC Corp
Application granted granted Critical
Publication of US3487144A publication Critical patent/US3487144A/en
Assigned to KELLOGG CREDIT CORPORATION A DE CORP. reassignment KELLOGG CREDIT CORPORATION A DE CORP. AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE (SEE RECORD FOR DETAILS) Assignors: AVTEX FIBERS INC., A NY CORP., ITT RAYONIER INCORPORATED, A DE CORP., WALTER E. HELLER & COMPANY, INC. A NY CORP.
Assigned to WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. reassignment WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE (SEE RECORDS FOR DETAILS). Assignors: AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y., AVTEX FIBERS, INC, A CORP. OF NY, KELLOGG CREDIT CORP., A CORP. OF DEL.
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
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes
    • D01D5/092—Cooling filaments, threads or the like, leaving the spinnerettes in shafts or chimneys
    • 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
    • D01D5/08—Melt spinning methods
    • D01D5/088—Cooling filaments, threads or the like, leaving the spinnerettes

Definitions

  • U.S. Patent No. 2,252,684 discloses a quenching apparatus which completely surrounds the spun filaments and projects a cooling gaseous medium from all directions onto the molten filaments. The gaseous medium is then forced downwardly co-current with the filaments.
  • U.S. Patent No. 3,067,458 discloses an improvement over U.S. Patent No. 2,252,684, by the additional requirement of a horizontal flow of a gaseous medium across the filaments below the cylindrical quenching device. This addition was made to reduce the effect of air turbulence in the cylindrical quench.
  • U.S. Patent No. 3,299,469 is an improvement over both U.S. Patents Nos. 2,252,684 and 3,067,458, and
  • an apparatus for cooling molten polymeric filaments extruded from a substantially circular spinneret assembly comprising walls defining an enclosure adapted to receive a cooling gaseous medium, said walls including a front wall having a longitudinally concave foraminous surface extending into said enclosure, the walls of said enclosure having edges substantially coextensive with the edges of said concave surface, and said enclosure having inlet means for a supply of said gaseous medium.
  • FIGURE 1 is a perspective view, partially broken at One end wall, of an embodiment of the apparatus of this invention.
  • FIGURE 2 is a side view, partially in perspective and partially in section, of the apparatus of this invention in association with a circular spinneret assembly.
  • the enclosure 1, for the quenching apparatus is defined by end walls 2 and 3 (3 not visible in FIG. 1), side walls 4 and 4' (4' not visible in drawing), back wall 5 (5 shown in FIG. 2), and a front wall comprising front side sections 6 and 6' and a longitudinal concave foraminous surface 7 extending into the enclosure.
  • the foraminous surface 7 is advantageously held in place by longitudinal strips 8 and 8' and concave strips 9 and 9 fastened with screws 10.
  • the foraminous surface may be wire screen, perforated sheet metal, a combination of both or any other air distributing foraminous surface common to this art.
  • a curved perforated wall 11 is mounted between the front wall and back wall of enclosure 1, to provide a more even distribution of air or other cooling gas from a supply inlet 12.
  • tubular gas inlet 12 extends from back wall 5 and is adapted for telescopic cooperation with a slightly larger tube 13 which extends into a conventional plenum chamber designated 14.
  • Gas inlet tube 12 has a key 15 attached to the underside of its end portion which is designed to keep the quenching apparatus properly oriented by slideable engagement with slot 16 of tube 13.
  • Tube 13 contains orifices 17 to facilitate gas flow into inlet 12.
  • the gas inlet supply may be connected to the bottom or back with appropriate bafiies employed therein to distribute the cooling gas in the manner desired.
  • the quench device may also be mounted to slide up and down relative to the spinneret.
  • the quenching apparatus is designed to be capable of being positioned as close up to the face of the circular spinneret assembly 18 as possible, as shown in FIG. 2, in order to solidify the filaments more quickly.
  • the semicircular foraminous surface of the quenching apparatus produces a semi-radial horizontal flow of cooling gas across the filaments without a corresponding concurrent flow of the gaseous medium with the extruded filaments thus substantially obviating the type of turbulence which occurs when using a completely cylindrical quenching apparatus wherein the gas currents meet at the center of the filament stream.
  • the apparatus of this invention while effectively and substantialy uniformly quenching the extruded molten filaments, also permits easier access to the face of the spinneret for cleaning and lacing and may be moved away from the filament flow without becoming littered with molten polymer. It combines the features of cylindrical quenching devices and straight wall quenching devices, thus providing advantages over both.
  • the device of this invention does not produce the type of air turbulence developed in a cylindrical quench. It may also be stated that this invention shows advantageous quenching results over straight wall quenching, such as shown in U.S. Patent No. 2,273,105, particuplarly where the quenching means is not close up to the spinneret face.
  • the quench device had a foraminous air distributing surface 7 inches wide and 30 inches long, positioned in front of a plenum chamber about inches behind the center of the molten filaments and about 5 inches below the face of the spinneret.
  • procedure B the quench device of the present invention, essentialy as depicted in the accompanying drawing, was employed in place of the quench device of procedure A.
  • the device was about 18 inches long and the foraminous surface was about 2 inches from the center of the molten filaments.
  • the device was placed close to the face of the spinneret, similar to the showing in FIG. 2 of the drawing.
  • the quench air had a velocity in both procedures A and B, as measured within about inch from the outer face of each foraminous surface, of 4050 feet per minute.
  • the unevenness or non-uniformity of the yarns was measured following the general procedures of ASTMD-l425, Method of Test for Uneveness of Textile Strands, using an instrument of the type which measures directly the properties of the yarn which change the capacity of a condenser when the yarn pases between its plates. The lower the value found in this test procedure, the more uniform is the filament product.
  • Dye uniformity or B'arr ratings were made visually by three trained individulas independently, and the results averaged. The ratings are made on the yarn knitted into a sleeve. vBarr ratings are assigned arbitrary numbers ranging from 1 to 5 with increments of 0.25. The higher the Barr rating, the more uniform the product.
  • the method comprising extruding a plurality of molten synthetic polymer filaments downwardly from a substantially circular spinneret assembly and cooling said molten filaments by directing a coling gaseous medium horizontally and radially inwardly across said filaments over an arc of about 2.
  • the cooling gaseous medium is caused to flow across the filaments as they leave the spinneret assembly.
  • an apparatus for cooling said molten filaments comprising walls defining an enclosure adapted to recive a cooling gaseous medium, said walls including a front wall having a longitudinally concave foraminous surface extending into said enclosure, said enclosure walls having edges substantially coextensive with the edges of said concave surface, and said enclosure having inlet means for a supply of said cooling gaseous medium.
  • inlet gas supply means is a conduit associated with said back wall which is adapted to telescopically cooperate with another conduit associated with a gas supply source whereby the cooling apparatus may be horizontally adjustably positioned with respect to the spinneret assembly.
  • Col. 2 line 61 "particuplarly" should be -particularly-:
  • line 68 "usng” should be -using--. Col. 3 line 6, "essentialy should be essentially-; line 18 "uneveness” should be unevenness-; line 21, “pases” should be passes; line 25, “individulas” should be -individuals-; line 43 “prefrably” should be --preferably-; line 44, "coling” should be --cooling-- line 45, "minnute” should be --minute. Col. 4, line 7, "coling” should be -cooling; line 17, “recive” should be -receive.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
US695604A 1968-01-04 1968-01-04 Apparatus and method for cooling extruded molten filaments Expired - Lifetime US3487144A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US69560468A 1968-01-04 1968-01-04

Publications (1)

Publication Number Publication Date
US3487144A true US3487144A (en) 1969-12-30

Family

ID=24793701

Family Applications (1)

Application Number Title Priority Date Filing Date
US695604A Expired - Lifetime US3487144A (en) 1968-01-04 1968-01-04 Apparatus and method for cooling extruded molten filaments

Country Status (6)

Country Link
US (1) US3487144A (es)
BR (1) BR6803992D0 (es)
DE (1) DE1806691A1 (es)
ES (1) ES361035A1 (es)
FR (1) FR1596150A (es)
GB (1) GB1193370A (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3932576A (en) * 1974-12-23 1976-01-13 Concorde Fibers, Inc. Apparatus for and method of melt spinning
US4020643A (en) * 1974-03-01 1977-05-03 Thomas J. Lipton, Inc. Ice confection
US4529368A (en) * 1983-12-27 1985-07-16 E. I. Du Pont De Nemours & Company Apparatus for quenching melt-spun filaments
US10323336B2 (en) * 2013-09-26 2019-06-18 Reliance Industries Limited System, method and device for quenching synthetic multifilament fibers
CN112981566A (zh) * 2021-01-20 2021-06-18 浙江恒优化纤有限公司 半消光扁平poy合股纤维的纺丝设备及纺丝工艺

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110106565B (zh) * 2019-06-20 2024-01-23 苏州金泉新材料股份有限公司 短纤维熔融纺丝用的u形环吹风冷却装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257487A (en) * 1963-03-04 1966-06-21 Allied Chem Melt spinning of epsilon-polycaproamide filament
US3320343A (en) * 1962-08-23 1967-05-16 Schwarza Chemiefaser Process for melt-spinning of synthetic linear high polymers
US3325906A (en) * 1965-02-10 1967-06-20 Du Pont Process and apparatus for conveying continuous filaments
US3366722A (en) * 1964-07-24 1968-01-30 Chemcell Ltd Yarn manufacture

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320343A (en) * 1962-08-23 1967-05-16 Schwarza Chemiefaser Process for melt-spinning of synthetic linear high polymers
US3257487A (en) * 1963-03-04 1966-06-21 Allied Chem Melt spinning of epsilon-polycaproamide filament
US3366722A (en) * 1964-07-24 1968-01-30 Chemcell Ltd Yarn manufacture
US3325906A (en) * 1965-02-10 1967-06-20 Du Pont Process and apparatus for conveying continuous filaments

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020643A (en) * 1974-03-01 1977-05-03 Thomas J. Lipton, Inc. Ice confection
US3932576A (en) * 1974-12-23 1976-01-13 Concorde Fibers, Inc. Apparatus for and method of melt spinning
US4529368A (en) * 1983-12-27 1985-07-16 E. I. Du Pont De Nemours & Company Apparatus for quenching melt-spun filaments
US10323336B2 (en) * 2013-09-26 2019-06-18 Reliance Industries Limited System, method and device for quenching synthetic multifilament fibers
CN112981566A (zh) * 2021-01-20 2021-06-18 浙江恒优化纤有限公司 半消光扁平poy合股纤维的纺丝设备及纺丝工艺

Also Published As

Publication number Publication date
BR6803992D0 (pt) 1973-02-08
GB1193370A (en) 1970-05-28
FR1596150A (es) 1970-06-15
ES361035A1 (es) 1970-10-01
DE1806691A1 (de) 1969-08-07

Similar Documents

Publication Publication Date Title
US3379811A (en) Apparatus and process for production of filaments
US3067458A (en) Melt spinning apparatus and process
US2252684A (en) Apparatus for the production of artificial structures
US3737508A (en) Dry spinning apparatus and process
US4804511A (en) Process for dry spinning yarns of improved uniformity and reduced adhesion
US3487144A (en) Apparatus and method for cooling extruded molten filaments
KR970700790A (ko) 다수의 합성사를 방사하기 위한 방사대 및 이러한 방사대를 가진 방사장치(spinning beam for spinning a plurality of synthetic threads and spinning device ocmprising a spinning beam of this type)
ITMI951970A1 (it) Tubo di raffreddamento per raffreddare filamenti sintetici
ES348774A1 (es) Procedimiento y dispositivo para la fabricacion de hilos demacropolimeros sinteticos lineales, rizados durante la hila-tura.
BR0011173B1 (pt) aparelho e processo de fiação por fusão para a fiação de filamentos polìmericos contìnuos.
US3672801A (en) Spinning quench chamber having a conical flow director
US3061874A (en) Melt spinning apparatus
US3067459A (en) Quenching chamber
US3551949A (en) Spinning chimney
US3497586A (en) Process and apparatus for melt spinning thermoplastic yarn
US3271818A (en) Quenching apparatus
JPS61201005A (ja) 溶融紡糸装置
KR19980081527A (ko) 방사 필라멘트를 수동적으로 지연 냉각시키기 위한 장치 및방법
JPS57161113A (en) Melt spinning method
US3435108A (en) Filament production for synthetic linear polymers
US2919465A (en) Method and apparatus for filament spinning
JP3252520B2 (ja) 溶融紡糸装置
JP2006528283A (ja) 溶融紡糸、冷却及び巻取り装置
KR100314561B1 (ko) 건식방사장치용 고뎃롤러 및 이를 이용한 건식방사방법
KR100225604B1 (ko) 균제도가 우수한 폴리에스터 극세사의 제조방법

Legal Events

Date Code Title Description
AS Assignment

Owner name: WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL.

Free format text: AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y.;AVTEX FIBERS, INC, A CORP. OF NY;KELLOGG CREDIT CORP., A CORP. OF DEL.;REEL/FRAME:003959/0250

Effective date: 19800326

Owner name: KELLOGG CREDIT CORPORATION A DE CORP.

Free format text: AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE;ASSIGNORS:WALTER E. HELLER & COMPANY, INC. A NY CORP.;ITT RAYONIER INCORPORATED, A DE CORP.;AVTEX FIBERS INC., A NY CORP.;REEL/FRAME:003959/0350

Effective date: 19800326