US3638410A - Method and an apparatus for the production of crimped synthetic filaments - Google Patents

Method and an apparatus for the production of crimped synthetic filaments Download PDF

Info

Publication number
US3638410A
US3638410A US3638410DA US3638410A US 3638410 A US3638410 A US 3638410A US 3638410D A US3638410D A US 3638410DA US 3638410 A US3638410 A US 3638410A
Authority
US
United States
Prior art keywords
filaments
spindle
cording
twist
twisted
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
Inventor
Herbert Scherzberg
Herbert Neumann
Robert Schnegg
Theo Dietrich
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of US3638410A publication Critical patent/US3638410A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
    • D02G1/028—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist by twisting or false-twisting at least two filaments, yarns or threads, fixing the twist and separating the filaments, yarns or threads

Definitions

  • This invention relates to a method for the production of crimped endless filaments of synthetic high-molecular weight polymers by fixing the crimp by twist displacement which comprises twisting two filaments by means of a cording spindle.
  • the invention relates to a method and an apparatus for crimping endless filaments from synthetic high-molecular weight polymers, in which a permanent crimp is produced by twist displacement.
  • a method for the production of crimped endless filaments of synthetic high-molecular weight polymers comprises twisting two filaments and fixing the crimp by twist displacement, and which is characterized in that the twist is produced by means of a cording spindle.
  • FIG. 1 An apparatus for carrying out the process is illustrated in FIG. 1.
  • the filament from the spool (1') inside the cording spindle (2) is twisted together with the filament 4 from the spool (3') outside the cording spindle at the pivot (6) as long as the cording spindle rotates.
  • the delivery mechanism (7) carries the two filaments to the machine which performs the stretching and twisting operations.
  • a den filament of polyamide 6 for example, 3,000 twists per meter are necessary to produce a required crimped effect.
  • the cording spindle is then stopped. This rotation of the cording spindle may take place with the filaments either stationary or running.
  • Crimping is then carried out by the separate twisting process, by shifting the twist in a manner known per se. If the twists are too high or too low for the required crimped effect, twists can be added or subtracted during the separated twisting process by rotating the cording spindle clockwise or anticlockwise. The same process may be carried out if it is necessary to reduce the twist because the filament tension is too high.
  • cording spindles for twisting two filaments
  • the required twist can be produced.
  • it can be varied during the separated twisting process according to the thread tension and the crimped effect. This constitutes a great practical advantage in the production of crimped yam by the separate twisting process, especially when the process is carried out from the spinning spool.
  • FIGS. 1 and 2 show in section and elevational view devices for carrying out the separate twisting process from the spinning spool.
  • the stretching process is carried out separately from the crimping process
  • the creel 15 contains the spinning spools 3 and l.
  • the cording spindles 2 are staggered so that every second spinning spool is associated with a cording spindle.
  • the spinning spools which belong together are mounted on either side of the creel.
  • the cording spindle is driven by a tangential drive belt 14.
  • the filaments 4 and 5' are carried from the spinning spools l' and 3' side by side during operation, through the stretching mechanism between the delivery devices 13 and 7', and then to the upper separating pin 16', in the twisted state, and then through the fixing in the heater l0, and then separated from each other at the lower separating pin 8, and each filament is then drawn off via the delivery mechanism 9 and 10, respectively, and then wound on the ring twisting spindles 11 and I2, respectively.
  • the upper separating pin 16' is pushed between the two moving filaments 4 and 5' so that'the twist which was imparted to both filaments by the cording spindle, and which accumulates at the lower separating pin 8', is compressed into a limited length.
  • the delivery mechanism 13' is omitted. Stretching takes place in the crimping zone between the delivery mechanisms 7 and 9.
  • the twist is thus introduced into the filaments by means of cording spindles, and the twist applied can be varied clockwise or anticlockwise during the separate twisting process by rotation to the left or to the right, and the stretching field and crimping field can be combined.
  • the creel is equipped alternately with driven cording spindles and the drive for the cording spindles is so arranged that the two sides of the machine can be driven either separately or simultaneously.
  • Two spools 1 and 3 of unstretched polyamide 6 of titre 20 den are mounted in the creel 15.
  • the spool 1' is placed in the cording spindle 2' which is not rotating.
  • the filament 4 from the spool 3 is threaded through the inside of the spool 3', suspended in the rotating part of the cording spindle 2', and combined with the filament 5' from the spool I.
  • the two filaments With cording spindle 2 stationary, the two filaments are now together carried over the deflector 6' through the delivery mechanism 7' and stretching mechanism 13' and past the upper separating pin 16 which is folded outwards, and through the heating elements 10.
  • the filament 4' runs past the right side of the separating pin 8' to the delivery mechanism 9' with winding spindle 11, and filament 5' runs past the left side of the separating pin and through the delivery mechanism 10' tothe winding spindle 12.
  • the two filaments which lie side by side, but are not yet twisted together, are stretched between 7' and 13'.
  • the two filaments are twisted together at the deflection point 6'.
  • the twist runs with the two moving filaments and accumulates at the lower separating pin 8 since the two filaments 5' and 4 run past the right side and left side, respectively, of the lower separating pin 8'.
  • the spindle is stopped and the upper separating pin 16 is moved in between the filaments 4' and 5' so that the required twist is confined to a definite length between the two separating pins.
  • the two filaments 4' and 5' run side by side to the upper separating pin 16' and from there in the twisted state to the lower separating pin 8 and from there separately via their delivery mechanism 9' and 10' to the ring twisting spindles 11' and 12'.
  • the twist is fixed by heating elements 10' between the upper and the lower'separating pin.
  • the separate stretching mechanism is omitted since stretching and crimping are combined.
  • the spools l and 3 are mounted on the creel 15 in such a way that the spool 1 enters the stationary cording spindle 2.
  • the filaments 3 and 4 lie parallel side by side as they are doffed into the delivery mechanism 7 and from there they move past the upper separating pin 16 which is swing outwards and through the heating element and, as already described, past the left and right side, respectively, of the lower separating pin 8 and through the delivery mechanisms 9 and 10, which also act as stretching mechanisms, to the winding spools 11 and 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Catalysts (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

This invention relates to a method for the production of crimped endless filaments of synthetic high-molecular weight polymers by fixing the crimp by twist displacement which comprises twisting two filaments by means of a cording spindle.

Description

United States Patent Scherzberg et al.
[ Feb. 1, 1972 [54] METHOD AND AN APPARATUS FOR THE PRODUCTION OF CRIMPED SYNTHETIC FILAMENTS [72] Inventors: Herbert Scherzberg; Herbert Neumann; Robert Schnegg; Theo Dietrich, all of Dormagen, Germany [73] Assignee: Farbentabriken Bayer Aktiengesellschaft,
Leverkusen, Germany [22] Filed: Aug. 12, 1969 [21] App]. No.: 849,377
[30] Foreign Application Priority Data Aug. 2, 1968 Germany ..P 17 85 180.8
[52] US. Cl. ..57/34 HS, 57/157 TS '[51] Int Cl ..'.D02g l/02,D02g1/06 [58] Field of Search ..57/34, 34 HS, 51.3, 58.52,
[56] References Cited UNITED STATES PATENTS 2,987,869 6/1961 Klein ..57/34 3,321,904 5/ 1967 Horvath et a1. 57/34 X 3,327,462 6/1967 Wyatt ..57/34 3,355,872 12/1967 Gilcnst et al ..57/34 X 3,382,657 5/1968 Horvath ..57/34 2,881,504 4/1959 Billion ..57/34 UX Primary Examiner-Donald E. Watkins Attorney-Plumley and Tyner 57 ABSTRACT I This invention relates to a method for the production of crimped endless filaments of synthetic high-molecular weight polymers by fixing the crimp by twist displacement which comprises twisting two filaments by means of a cording spindle.
3 Claims, 3 Drawing Figures PATENTED rsa uazz 313383110 sum 2 or 2 I I FIG. 2
INVENTOR.
HERBERT SCUERZBERG, HERBERT NEUMANN, ROBERT SCHNEGG, THEO DIETRICH METHOD AND AN APPARATUS FOR THE PRODUCTION OF CRIMPED SYNTHETIC FILAMENTS The invention relates to a method and an apparatus for crimping endless filaments from synthetic high-molecular weight polymers, in which a permanent crimp is produced by twist displacement.
When two filaments are twisted and then fixed in the twisted state, it is well known that a permanent crimp can be produced by twist displacement. This twist can be produced in two different ways. In both cases an auxiliary spool is required. In one method of applying the filament, 5,000 turns of one filament of titre dtex 22 (20 den), for example, are wound onto an auxiliary spool without severing the filament. The second filament, which is to be twisted together with the first filament, is then threaded through the axis of the auxiliary spool and both filaments are doffed over the top. This doffing of the filament over the top of the auxiliary spool causes the twist to be applied to both filaments. In the other process of applying the filaments, both filaments are wound onto the auxiliary spool, and the twist is produced by doffing over the top. Both devices have the disadvantage in that no variation in the twist is possible while the filaments are running. I
A method for the production of crimped endless filaments of synthetic high-molecular weight polymers has now been found, which comprises twisting two filaments and fixing the crimp by twist displacement, and which is characterized in that the twist is produced by means of a cording spindle.
In this method one may work from the spinning spool, and the material may be stretched at the same time, thereby reducing production cost. An apparatus for carrying out the process is illustrated in FIG. 1.
The filament from the spool (1') inside the cording spindle (2) is twisted together with the filament 4 from the spool (3') outside the cording spindle at the pivot (6) as long as the cording spindle rotates. The delivery mechanism (7) carries the two filaments to the machine which performs the stretching and twisting operations.
In a den filament of polyamide 6, for example, 3,000 twists per meter are necessary to produce a required crimped effect. By rotating the cording spindle 3,000 times, the two 20 den filaments of polyamide 6 are twisted together with 3,000 twists. The cording spindle is then stopped. This rotation of the cording spindle may take place with the filaments either stationary or running. Crimping is then carried out by the separate twisting process, by shifting the twist in a manner known per se. If the twists are too high or too low for the required crimped effect, twists can be added or subtracted during the separated twisting process by rotating the cording spindle clockwise or anticlockwise. The same process may be carried out if it is necessary to reduce the twist because the filament tension is too high.
By using cording spindles for twisting two filaments, the required twist can be produced. Moreover, it can be varied during the separated twisting process according to the thread tension and the crimped effect. This constitutes a great practical advantage in the production of crimped yam by the separate twisting process, especially when the process is carried out from the spinning spool.
FIGS. 1 and 2 show in section and elevational view devices for carrying out the separate twisting process from the spinning spool.
In FIG. 1, the stretching process is carried out separately from the crimping process,
Whereas in FIG. 2 the stretching and crimping processes are combined.
The creel 15 contains the spinning spools 3 and l. The cording spindles 2 are staggered so that every second spinning spool is associated with a cording spindle. The spinning spools which belong together are mounted on either side of the creel. The cording spindle is driven by a tangential drive belt 14. In the apparatus according to FIG. I, in which the stretching and crimping process are carried out separately, the filaments 4 and 5' are carried from the spinning spools l' and 3' side by side during operation, through the stretching mechanism between the delivery devices 13 and 7', and then to the upper separating pin 16', in the twisted state, and then through the fixing in the heater l0, and then separated from each other at the lower separating pin 8, and each filament is then drawn off via the delivery mechanism 9 and 10, respectively, and then wound on the ring twisting spindles 11 and I2, respectively. During operation, the upper separating pin 16' is pushed between the two moving filaments 4 and 5' so that'the twist which was imparted to both filaments by the cording spindle, and which accumulates at the lower separating pin 8', is compressed into a limited length. In FIG. 2, where stretching and crimping is combined, the delivery mechanism 13' is omitted. Stretching takes place in the crimping zone between the delivery mechanisms 7 and 9.
In the method according to the invention, and the apparatus for producing crimped filaments by the separate twisting process, the twist is thus introduced into the filaments by means of cording spindles, and the twist applied can be varied clockwise or anticlockwise during the separate twisting process by rotation to the left or to the right, and the stretching field and crimping field can be combined. The creel is equipped alternately with driven cording spindles and the drive for the cording spindles is so arranged that the two sides of the machine can be driven either separately or simultaneously. The following examples illustrate more particularly the invention.
EXAMPLE I The process as carried out in the apparatus with a separate stretching part and a separate crimping part (FIG. I).
Two spools 1 and 3 of unstretched polyamide 6 of titre 20 den are mounted in the creel 15. The spool 1' is placed in the cording spindle 2' which is not rotating. The filament 4 from the spool 3 is threaded through the inside of the spool 3', suspended in the rotating part of the cording spindle 2', and combined with the filament 5' from the spool I. With cording spindle 2 stationary, the two filaments are now together carried over the deflector 6' through the delivery mechanism 7' and stretching mechanism 13' and past the upper separating pin 16 which is folded outwards, and through the heating elements 10. The filament 4' runs past the right side of the separating pin 8' to the delivery mechanism 9' with winding spindle 11, and filament 5' runs past the left side of the separating pin and through the delivery mechanism 10' tothe winding spindle 12. When the machine starts, the two filaments which lie side by side, but are not yet twisted together, are stretched between 7' and 13'.
Three thousand revolutions per meter are required to'texture or crimp the filaments, by the separating twisting process, for filaments of titre 20 den. At a given constructional length of 800 mm. between the upper and the lower separating pin, therefore, the two filaments 4' and 5 have to be twisted together with 2,400 twists.
By rotating the cording spindle 2 2,400 times, the two filaments are twisted together at the deflection point 6'. The twist runs with the two moving filaments and accumulates at the lower separating pin 8 since the two filaments 5' and 4 run past the right side and left side, respectively, of the lower separating pin 8'. After 2,400 revolutions of the cording spindle 2', the spindle is stopped and the upper separating pin 16 is moved in between the filaments 4' and 5' so that the required twist is confined to a definite length between the two separating pins. The two filaments 4' and 5' run side by side to the upper separating pin 16' and from there in the twisted state to the lower separating pin 8 and from there separately via their delivery mechanism 9' and 10' to the ring twisting spindles 11' and 12'. The twist is fixed by heating elements 10' between the upper and the lower'separating pin.
EXAMPLE 2 The process as carried out in the apparatus with a combined stretching and crimping part (FIG. II).
In this variation, the separate stretching mechanism is omitted since stretching and crimping are combined. The spools l and 3 are mounted on the creel 15 in such a way that the spool 1 enters the stationary cording spindle 2. As already described above, the filaments 3 and 4 lie parallel side by side as they are doffed into the delivery mechanism 7 and from there they move past the upper separating pin 16 which is swing outwards and through the heating element and, as already described, past the left and right side, respectively, of the lower separating pin 8 and through the delivery mechanisms 9 and 10, which also act as stretching mechanisms, to the winding spools 11 and 12. Rotation of the cording spindle 2 through 2,400 revolutions while the filaments are running causes the twists in the filaments to accumulate in the region of the lower stretching pin 8. At the same time, the two filaments are stretched together. When 2,400 revolutions have been reached, the upper separating pin 16 is folded inwards so that with a distance of 0.8 m. between the pins, both filaments have 2,400 twists.
What we claim is:
1. in the method for the production of crimped endless filaments of synthetic high-molecular weight polymers which comprises twisting two filaments together and fixing the crimp in a fixing zone, the improvement which comprises conducting the two unstretched filaments through a cording spindle, increasing or decreasing the amount of twist in said filaments by rotating the cording spindle during the passage of said filaments to said fixing zone, stopping the cording spindle and thereafter transferring the twisted filaments into a fixing zone.
2. The method according to claim 1, wherein the unstretched filaments are twisted at the beginning of the crimping process, and the twist runs with the moving filaments through the stretching zone into the fixing zone where it accumulates.
3. In an apparatus for producing crimped endless filaments the improvement which comprises a creel consisting of a nonrotating spool and a rotatable cording spindle which spindle includes a second spool and doffing means for doffing the twisted filaments from the creel, and means for fixing said twisted filaments.

Claims (3)

1. In the method for the production of crimped endless filaments of synthetic high-molecular weight polymers which comprises twisting two filaments together and fixing the crimp in a fixing zone, the improvement which comprises conducting the two unstretched filaments through a cording spindle, increasing or decreasing the amount of twist in said filaments by rotating the cording spindle during the passage of said filaments to said fixing zone, stopping the cording spindle and thereafter transferring the twisted filaments into a fixing zone.
2. The method according to claim 1, wherein the unstretched filaments are twisted at the beginning of the crimping process, and the twist runs with the moving filaments through the stretching zone into the fixing zone where it accumulates.
3. In an apparatus for producing crimped endless filaments the improvement which comprises a creel consisting of a nonrotating spool and a rotatable cording spindle which spindle includes a second spool and doffing means for doffing the twisted filaments from the creel, and means for fixing said twisted filaments.
US3638410D 1968-05-30 1969-08-12 Method and an apparatus for the production of crimped synthetic filaments Expired - Lifetime US3638410A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR153371 1968-05-30
DE19681785180 DE1785180A1 (en) 1968-05-30 1968-08-22 Method and device for the production of crimped endless threads from synthetic high polymers
FR6911408A FR2040191B2 (en) 1968-05-30 1969-04-14

Publications (1)

Publication Number Publication Date
US3638410A true US3638410A (en) 1972-02-01

Family

ID=27181423

Family Applications (2)

Application Number Title Priority Date Filing Date
US3644557D Expired - Lifetime US3644557A (en) 1968-05-30 1969-05-26 Catalyst compositions for preparing ethylene
US3638410D Expired - Lifetime US3638410A (en) 1968-05-30 1969-08-12 Method and an apparatus for the production of crimped synthetic filaments

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US3644557D Expired - Lifetime US3644557A (en) 1968-05-30 1969-05-26 Catalyst compositions for preparing ethylene

Country Status (7)

Country Link
US (2) US3644557A (en)
BE (2) BE733723A (en)
CH (2) CH514004A (en)
DE (2) DE1785180A1 (en)
FR (3) FR1603019A (en)
GB (2) GB1278981A (en)
NL (2) NL6908283A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034544A (en) * 1973-05-25 1977-07-12 Uniroyal Inc. Method and apparatus for producing plied yarn and product thereof
US4185450A (en) * 1976-12-24 1980-01-29 Snia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S.P.A. Process for the texturization of polycapronamide fibres and texturized polycapronamide fibres obtained according to the process
US4729808A (en) * 1986-04-15 1988-03-08 American Filtrona Corporation Ink reservoir having continuous random sliver with stretch yarn
US4822193A (en) * 1986-04-15 1989-04-18 American Filtrona Corporation Ink reservoir having continuous random sliver with stretch yarn

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1306087A (en) * 1969-12-23 1973-02-07
FR2186452A2 (en) * 1972-05-31 1974-01-11 Azote & Prod Chim Low-porosity catalysts for ethylene prodn - by steam reforming, contains refractory oxides, rare earth oxides and group VIII metal oxides
FR2187408A1 (en) * 1972-06-06 1974-01-18 Azote & Prod Chim Steam reforming catalysts for ethylene prodn - with thermally conductive support to reduce temp gradients
JPS514105A (en) * 1974-06-28 1976-01-14 Mitsubishi Chem Ind Orefuinno seizohoho
JPS5251303A (en) * 1975-10-21 1977-04-25 Mitsubishi Chem Ind Ltd Process for preparation of olefins
JPS5262205A (en) * 1975-11-17 1977-05-23 Mitsubishi Chem Ind Ltd Process for preparation of olefins
US4414140A (en) * 1981-12-23 1983-11-08 United Technologies Corporation Catalyst for steam reforming
US4490567A (en) * 1982-04-08 1984-12-25 Phillips Petroleum Company Catalyst and process for dehydrating 2-alcohols
EP0219609B1 (en) * 1982-04-08 1991-01-16 Phillips Petroleum Company Process for dehydrating 2-alcohols
US4451578A (en) * 1982-04-26 1984-05-29 United Technologies Corporation Iron oxide catalyst for steam reforming
US4522802A (en) * 1982-04-26 1985-06-11 United Technologies Corporation Steam reforming utilizing iron oxide catalyst
US4620052A (en) * 1985-07-25 1986-10-28 Phillips Petroleum Company Dehydrogenation and cracking of C3 and C4 hydrocarbons
US4620051A (en) * 1985-07-25 1986-10-28 Philips Petroleum Company Dehydrogenation and cracking of C3 and C4 hydrocarbons to less saturated hydrocarbons
US4621163A (en) * 1985-07-25 1986-11-04 Phillips Petroleum Company Conversion of C3 and C4 hydrocarbons to less saturated hydrocarbons
US4579997A (en) * 1985-07-25 1986-04-01 Phillips Petroleum Company Olefin production over catalytic oxides of Mn and at least one of Nb and a lanthanide
US4621162A (en) * 1985-07-25 1986-11-04 Phillips Petroleum Company Method for conversion of C3 and C4 hydrocarbons to olefinic products
US4613722A (en) * 1985-07-25 1986-09-23 Phillips Petroleum Company Dehydrogenation of C3 and C4 hydrocarbons over an iron-based catalyst
US4658081A (en) * 1985-07-25 1987-04-14 Phillips Petroleum Company Propylene and ethylene selectivity with H2 S
US5093540A (en) * 1990-08-31 1992-03-03 Shell Oil Company Process for selectively converting linear paraffins to linear alpha olefins
US5095166A (en) * 1990-08-31 1992-03-10 Shell Oil Company Process for cracking paraffins to olefins
US5600051A (en) * 1995-05-19 1997-02-04 Corning Incorporated Enhancing olefin yield from cracking
JP2006501981A (en) * 2002-07-24 2006-01-19 ピー． ニュートン、ジェフリー Catalyst composition and its use in the production of low molecular weight hydrocarbons
KR100544880B1 (en) * 2002-08-19 2006-01-24 주식회사 엘지화학 Hydrocarbon Steam Pyrolysis Catalyst for Olefin Production, Method for Preparing the Olefin and Olefin Production Method Using the Same
KR20050102766A (en) * 2004-04-22 2005-10-27 주식회사 엘지화학 Hydrocarbon cracking catalyst and method for preparing the same
KR100638444B1 (en) * 2004-10-18 2006-10-24 주식회사 엘지화학 Hydrocarbon Decomposition Catalyst Using Chemical Liquid Vapor Deposition and Its Manufacturing Method
EP2125995B1 (en) * 2006-09-18 2017-07-05 Jeffrey P. Newton Production of lower molecular weight hydrocarbons
KR100931792B1 (en) 2007-05-25 2009-12-11 주식회사 엘지화학 Catalyst for pyrolysis of hydrocarbon steam, preparation method thereof and preparation method of olefin using the same
KR100999304B1 (en) * 2007-07-05 2010-12-08 주식회사 엘지화학 Hydrocarbon Pyrolysis Process for Olefin Production
US8481451B2 (en) 2009-06-08 2013-07-09 Lg Chem, Ltd. Catalyst for hydrocarbon steam cracking, method of preparing the same and method of preparing olefin by using the same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881504A (en) * 1953-02-24 1959-04-14 Billion & Cie Process for crimping textile threads
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3321904A (en) * 1963-11-26 1967-05-30 Heberlein Patent Corp Yarn threading process
US3327462A (en) * 1965-06-17 1967-06-27 Turbo Machine Co Yarn separating means
US3355872A (en) * 1963-12-20 1967-12-05 Klinger Mfg Co Ltd Methods and apparatus for crimping yarns
US3382657A (en) * 1965-02-17 1968-05-14 Heberlein Patent Corp Manufacture of textured textile yarns

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881504A (en) * 1953-02-24 1959-04-14 Billion & Cie Process for crimping textile threads
US2987869A (en) * 1957-12-03 1961-06-13 Deering Milliken Res Corp Yarn crimping apparatus and methods
US3321904A (en) * 1963-11-26 1967-05-30 Heberlein Patent Corp Yarn threading process
US3355872A (en) * 1963-12-20 1967-12-05 Klinger Mfg Co Ltd Methods and apparatus for crimping yarns
US3382657A (en) * 1965-02-17 1968-05-14 Heberlein Patent Corp Manufacture of textured textile yarns
US3327462A (en) * 1965-06-17 1967-06-27 Turbo Machine Co Yarn separating means

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4034544A (en) * 1973-05-25 1977-07-12 Uniroyal Inc. Method and apparatus for producing plied yarn and product thereof
US4185450A (en) * 1976-12-24 1980-01-29 Snia Viscosa Societa' Nazionale Industria Applicazioni Viscosa S.P.A. Process for the texturization of polycapronamide fibres and texturized polycapronamide fibres obtained according to the process
US4729808A (en) * 1986-04-15 1988-03-08 American Filtrona Corporation Ink reservoir having continuous random sliver with stretch yarn
US4822193A (en) * 1986-04-15 1989-04-18 American Filtrona Corporation Ink reservoir having continuous random sliver with stretch yarn

Also Published As

Publication number Publication date
BE737723A (en) 1970-02-02
US3644557A (en) 1972-02-22
NL6912399A (en) 1970-02-24
DE1927061A1 (en) 1969-12-04
CH514004A (en) 1971-10-15
GB1278981A (en) 1972-06-21
GB1278982A (en) 1972-06-21
FR1603019A (en) 1971-03-15
FR2040191B2 (en) 1974-06-14
BE733723A (en) 1969-11-28
DE1785180A1 (en) 1972-01-05
NL6908283A (en) 1969-12-02
FR2040191A2 (en) 1971-01-22
CH1094969A4 (en) 1971-06-30
FR2016223A1 (en) 1970-05-08

Similar Documents

Publication Publication Date Title
US3638410A (en) Method and an apparatus for the production of crimped synthetic filaments
US3225533A (en) Apparatus and process for forming yarns and other twisted assemblies
AU663518B2 (en) Internally bonded sewing threads and processes for production thereof
US3901012A (en) Method of and device for processing fibrous material
JPS6028936B2 (en) Yarn manufacturing method
US3478506A (en) Method of manufacturing a yarn
US3098347A (en) Elastic yarn and method of making the same
US3137119A (en) Process for the production of high bulk yarns
US3540204A (en) Method for manufacturing an improved elastic yarn covered with multifilament
US3807162A (en) Covered elastic yarn
US3828542A (en) Novel effect yarns and process for producing the same
US3264816A (en) Process for producing composite yarn structure
US3921382A (en) Method of making a covered elastic yarn
US2946181A (en) Production of twistless yarns by direct spinning to tow, sizing the tow, false twisting and winding
US3481134A (en) Method of making multistrand textile cord
US3643412A (en) Method and apparatus for the production of crimped yarns
US3367096A (en) Apparatus for false-twisting and plying yarns
US3834146A (en) Device for twisting natural and synthetic fibre yarns into a single thread
US3343356A (en) Method and apparatus for producing core yarn
SE433627B (en) Spinning device
US2946526A (en) Continuous method for winding up yarns
US3237391A (en) Pretwisting apparatus and method
US2263612A (en) Method of making elastic yarn
US3716981A (en) Method for manufacturing linen yarn, and linen yarn obtained by application of this method
US4112667A (en) Apparatus and process suitable for twist-drawing a yarn