US2811410A - Spinning of polyamides into a low humidity environment - Google Patents

Spinning of polyamides into a low humidity environment Download PDF

Info

Publication number
US2811410A
US2811410A US369717A US36971753A US2811410A US 2811410 A US2811410 A US 2811410A US 369717 A US369717 A US 369717A US 36971753 A US36971753 A US 36971753A US 2811410 A US2811410 A US 2811410A
Authority
US
United States
Prior art keywords
environment
spinning
relative humidity
polyamides
packages
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
US369717A
Other languages
English (en)
Inventor
Munch Werner
Maderno Cesano
Notarbartolo Luigi
Bruni Gaetano
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.)
Perfogit SpA
Original Assignee
Perfogit SpA
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 Perfogit SpA filed Critical Perfogit SpA
Application granted granted Critical
Publication of US2811410A publication Critical patent/US2811410A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides

Definitions

  • This invention relates to an improved spinning process applicable to the production of spun goods from synthetic linear polymers.
  • the purpose of avoiding the aforementioned troubles is achieved in a very simple and advantageous manner and perfectly wound yarn packages are obtained, by extruding the polymer in the customary way, by winding up the resulting thread at a suitable temperature in an atmosphere with a low relative humidity, preferably less than 50%, and by leaving the wound thread in such atmosphere during some hours.
  • a suitable temperature preferably less than 50%
  • a low relative humidity preferably less than 50%
  • the same polyamide is spun at the same speed and with the same count and is wound on bobbins in an en- "Ice vironment at the same temperature but at a relative humidity of 45%, the resulting bobbins are excellent and quite compact. If these bobbins are left in said low humidity atmosphere for a period of time which may go from 2 to 36 hours, but which is preferably comprised between 18 and 26 hours, and are later brought into an environment having the same temperature and a relative humidity of -70% and are left there for some hours or even for .one or two days or even more, they can be unwound in this latter environment at speeds even higher than 200 meters per minute without any difliculty and without any breakages occurring.
  • the bobbins after they have been wound and conditioned in the low humidity environment, swell but very little if brought into a normal or relatively high humidity environment, and even after they have remained therein a sufiiciently long time, contrary to what was to be foreseen.
  • a process for the spinning of synthetic linear polyamides comprising the steps of forming polyamide filaments by extruding a molten polyamide through a spinneret into an environment, maintaining in said environment a relative humidity not higher than 50%, winding the extruded filaments onto packages in the said environment, and conditioning said filament packages by keeping them in an environment having a relative humidity not substantially higher than 50% for a period of time comprised of between 2 and 36 hours.
  • a process according to claim 1, comprising the additional step of transferring the filament packages into an environment having a relative humidity substantially higher than 50% and subsequently unwinding said packages therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Polyamides (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US369717A 1952-08-06 1953-07-22 Spinning of polyamides into a low humidity environment Expired - Lifetime US2811410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT738067X 1952-08-06

Publications (1)

Publication Number Publication Date
US2811410A true US2811410A (en) 1957-10-29

Family

ID=11315388

Family Applications (1)

Application Number Title Priority Date Filing Date
US369717A Expired - Lifetime US2811410A (en) 1952-08-06 1953-07-22 Spinning of polyamides into a low humidity environment

Country Status (5)

Country Link
US (1) US2811410A (en))
BE (1) BE521879A (en))
DE (1) DE1036459B (en))
FR (1) FR1081615A (en))
GB (1) GB738067A (en))

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918347A (en) * 1956-05-18 1959-12-22 Snia Viscosa Process for melt-spinning polyamides into low humidity atmosphere
US3088794A (en) * 1960-08-26 1963-05-07 Du Pont Process for spinning and drawing polyalkylene isophthalamides
US3154609A (en) * 1962-03-29 1964-10-27 Celanese Corp Production of crimped filaments
US3200183A (en) * 1961-10-05 1965-08-10 Ici Ltd Stretching process
US3216965A (en) * 1962-03-29 1965-11-09 Celanese Corp Blend of a polyterephthalamide and a lower melting polyamide for improved dye receptivity
US3247300A (en) * 1962-10-25 1966-04-19 Du Pont Process for producing highly crimped fibers having modified surfaces
US3249591A (en) * 1962-06-01 1966-05-03 Du Pont Homopolyamide of recurring bis (paraaminocyclohexyl) methane-azelamide units
JPS609909A (ja) * 1983-06-24 1985-01-19 Asahi Chem Ind Co Ltd 均染性の優れたナイロン６６繊維およびその製造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548221B1 (fr) * 1983-06-30 1985-12-20 Snia Fibre Procede de production d'enroulements de fil de polycaproamide et enroulements obtenus par ce procede

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157117A (en) * 1937-02-15 1939-05-09 Du Pont Steam treatment of polyamides

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2157117A (en) * 1937-02-15 1939-05-09 Du Pont Steam treatment of polyamides

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918347A (en) * 1956-05-18 1959-12-22 Snia Viscosa Process for melt-spinning polyamides into low humidity atmosphere
US3088794A (en) * 1960-08-26 1963-05-07 Du Pont Process for spinning and drawing polyalkylene isophthalamides
US3200183A (en) * 1961-10-05 1965-08-10 Ici Ltd Stretching process
US3154609A (en) * 1962-03-29 1964-10-27 Celanese Corp Production of crimped filaments
US3216965A (en) * 1962-03-29 1965-11-09 Celanese Corp Blend of a polyterephthalamide and a lower melting polyamide for improved dye receptivity
US3249591A (en) * 1962-06-01 1966-05-03 Du Pont Homopolyamide of recurring bis (paraaminocyclohexyl) methane-azelamide units
US3247300A (en) * 1962-10-25 1966-04-19 Du Pont Process for producing highly crimped fibers having modified surfaces
JPS609909A (ja) * 1983-06-24 1985-01-19 Asahi Chem Ind Co Ltd 均染性の優れたナイロン６６繊維およびその製造方法

Also Published As

Publication number Publication date
DE1036459B (de) 1958-08-14
BE521879A (en))
GB738067A (en) 1955-10-05
FR1081615A (fr) 1954-12-21

Similar Documents

Publication Publication Date Title
US2811410A (en) Spinning of polyamides into a low humidity environment
US2715763A (en) Synthetic textile fiber
IE23508B1 (en) Fibres and filaments having improved crimp characteristics and method for their production
JPS63303115A (ja) ポリエーテルイミドからなる繊維の製造方法およびポリエーテルイミドからなる繊維
US4000238A (en) Method for production of synthetic yarns
US4804508A (en) Process for spinning polyamide at high speed
US4110965A (en) Spun-like hand yarn process
US3775961A (en) Yarn process
US3716611A (en) Method for producing high tenacity nylon-66 filaments
US3975488A (en) Process for preparing poly(tetramethylene terephthalate) yarn
US5009829A (en) Process for manufacturing yarns by meltspinning polyethylene terephthalate
US3822334A (en) Process for preparing poly(tetramethylene terephthalate)yarn
GB1275572A (en) Multifilamental bundles and yarns of differently coloured synthetic melt spun filaments
ES456730A1 (es) Procedimiento de hilado de fusion por extrusion a alta velo-cidad.
US2537312A (en) High elongation yarn
US5277859A (en) Method for the production of polypropylene yarn
US4287713A (en) Process for low-torque textured yarn
US3694539A (en) Manufacture of synthetic polymeric filaments
US2347545A (en) Production of artificial filaments, films, and other articles from organic polymerization products
US3382307A (en) Process for the stretching of polyamidic fibres
JPH08199424A (ja) ポリエステルモノフィラメントパッケージ
SU751846A1 (ru) Способ получени ориентированных термопластичных нитей из полимера
US2324567A (en) Manufacture of artificial filaments, threads, and the like
US2133715A (en) Method of producing artificial thread
DE2610327A1 (de) Verfahren zur herstellung von polyamid 6-, polyamid 6,6- und polyester-filamentgarnen