US3527045A - Production of yarns - Google Patents

Production of yarns Download PDF

Info

Publication number
US3527045A
US3527045A US789119A US3527045DA US3527045A US 3527045 A US3527045 A US 3527045A US 789119 A US789119 A US 789119A US 3527045D A US3527045D A US 3527045DA US 3527045 A US3527045 A US 3527045A
Authority
US
United States
Prior art keywords
yarn
bare
spandex
yarns
covering
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
US789119A
Other languages
English (en)
Inventor
David Wilson
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.)
CLUTSOM PENN INTERN Ltd
Original Assignee
CLUTSOM PENN INTERN Ltd
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 CLUTSOM PENN INTERN Ltd filed Critical CLUTSOM PENN INTERN Ltd
Application granted granted Critical
Publication of US3527045A publication Critical patent/US3527045A/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
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
    • D02G3/322—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic using hollow spindles
    • 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
    • D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes

Definitions

  • thermoplastic elastomeric yarns (which term includes threads) of the class containing at least 85% segmented polyurethane.
  • Such yarns are generally known, and will for convenience hereinafter be referred to, as Spandex yarns.
  • Another previously proposed process described in British specificafion No. 1,103,485 aims to increase the tensile strength and modulus of elastomeric threads (having an elongation at break Of at least 150%, a tensile recovery of 90% or more and a stress decay of less than 30%) in a comparatively short time, this further process con sisting in heating a synthetic elastomeric thread to a temperature of at least 130 C. and simultaneously stretching it from ZOO-600 percent while it is passing between two thread-storage devices the speeds of which are adjusted to give the desired degree of stretchjng over a period of time not exceeding 1 minute, the thread leaving the second storage device being allowed to relax freely and being collected in a form substantially free from ten sron.
  • the general aim of the present invention is to provide an improved process for producing Spandex yarns Patented Sept. 8, 1970 whereby advantages, hereinafter to be specified, are derived over and above those secured from the adoption of known processes.
  • a particular object of the invention is to produce spandex yarns of deniers or c0unts not at present commercially available.
  • Another specific object is to produce spandex yarns having improved properties in relation to those et comparable standard products.
  • the process of this invention consists in simultaneously extending bare spandex yarn to an extent of less than 200 percent and heat setting it at a temperature in the range l60300 C. over a period of time no greater than 30 seconds.
  • the percentage of the extension and the degree temperature to which the spandex yarn is subjected may be so judiciously controlled within the specified ranges as to impart desired propertes to the yarn.
  • some properties such, for example, as breaking elongation may be found to be superior to those of the standard product.
  • the bare spandex yarn may be extended whilst it is being caused to run over or past, and preferably in contact with an electrically heated plate.
  • a heater plate such as is used in a false twisting process may be employed.
  • the process already broadly defined herein may be actually carried out on a covering machine, that is to say a machine for applying spirally upon initially bare spandex a covering thread or threads.
  • the process of this invention is particularly suitable for carrying out on a covering machine, there is no limitation in this respect since it may also be carried out as, say, part of a winding operation, e.g. when winding bare spandex yarn from one package such as a cheese to another such as a warp beam.
  • a bare spandex yarn Y is being drawn from a supply package 1 and finally wound up on to a take-up package 2.
  • the bare spandex yarn Y runs freely right through the spindles 3 and 4, and the latter and hence also the bobbins 5 and 6 supported thereby are spaced apart axially in, and arranged to rotate about, a straight upward portion of the path of travel of the said yamindicated by the arrows.
  • the apparatus is equipped, in advance of the covering bobbins 5 and 6, with both means for extending, i.e. stretching, the travelling bare yarn Y and also a heater 7 through which the extended yarn is guided.
  • the heater in box form, incorporates an electrically heated plate 7 over which the yarn travels in contact therewith.
  • first and second feed wheels 8 and 9 respectively -around which the bare yarn Y is passed, the second wheel 9 being caused to run appropriately faster than the first to extend the yarn, and the heater 7 being located between the said two wheels so that the initially bare yarn becomes heat set prior to being covered.
  • the two feed wheels 8 and 9, spaced apart with the heater between them, are located after the supply package 1 and immediately before the first rotoary covering spindle 3.
  • the feed wheel 8 may be dispensed with, in which instance extension of the bare spandex may be etfected by driving the supply package 1 more slowly than the then single feed wheel 9.
  • the apparatus may advantageonsly include a takeup roller 10, and a reciprocatory guide 11 which is movable to and fro parallel to the axis of the take-up package 2 for the purpose of laying the extended and heat set and now covered yarn evenly upon the said package.
  • the yarn Y travels generally in an upward direction from the supply package 1 to the takeup package 2, with the exception that it travels horizontally through the heater 7, although there are no limitations in these respects.
  • Breaking Plate temperature (measured by elongation (percent) thermophil temperature probe) Untreated 550 230 C. 550 245 C. 600 250 C. 700 255 C. 750
  • Breaking Temperature elongation Untreated 550 215 C. 600 225 C. 700 230 C. 750 240 C 800 Pereentage et extension retained on Percentage et the set Temperature of which is permanent treatment C.) relcasing (percent set) to a bail 011 1,120 denier:
  • the preferred ones are 255 C. for the 1120 denier yarn; and 230 C. for the 840 denier yarn.
  • Fine deniers of covered spandex yarn can -be produced by the herein described process. For example, starting from 20 denier bare spandex (the finest spandex currently commercially available is 20 denier), it is possible to produce a covered 10 denier spandex yarn. Also by the adaption of this invention, covered spandex yarns of substantially heavier deniers not at prescrit commercially available can be produced. Thus, for instance starting from 1120 denier bare spandex it is possible to produce a covered 650 denier spandex yarn.
  • thermoplastic clastomeric yarn containing at least 85% segmented polyurethane in which the yarn is simultaneously extended and heated over a short period of time characterised in that the yarn, in a bare condition, is simultaneously extended to an extent of less than 200 percent and heat set at a temperature in the range 160300 C. over a period of time net exceeding 30 seconds.
  • thermoplastic elastomeric yarn made according to the process of claim 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US789119A 1968-01-30 1969-01-06 Production of yarns Expired - Lifetime US3527045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4774/68A GB1201433A (en) 1968-01-30 1968-01-30 Improvements in the treatment of thermoplastic elastomeric yarns

Publications (1)

Publication Number Publication Date
US3527045A true US3527045A (en) 1970-09-08

Family

ID=9783566

Family Applications (1)

Application Number Title Priority Date Filing Date
US789119A Expired - Lifetime US3527045A (en) 1968-01-30 1969-01-06 Production of yarns

Country Status (13)

Country Link
US (1) US3527045A (xx)
AT (1) AT313462B (xx)
BE (1) BE727558A (xx)
CH (1) CH487277A (xx)
DE (1) DE1901204A1 (xx)
ES (1) ES362928A1 (xx)
FR (1) FR2000960A1 (xx)
GB (1) GB1201433A (xx)
IE (1) IE32842B1 (xx)
IL (1) IL31407A (xx)
NL (1) NL6900357A (xx)
RO (1) RO56655A (xx)
SE (1) SE342264B (xx)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788365A (en) * 1971-05-26 1974-01-29 Johnson & Johnson Narrow elastic fabric for use as waistband in articles of apparel
US3788366A (en) * 1971-10-04 1974-01-29 Johnson & Johnson Narrow elastic fabric
US3983687A (en) * 1972-04-10 1976-10-05 Courtaulds Limited Method of producing covered elastic yarn
US4228639A (en) * 1978-07-19 1980-10-21 James Mackie & Sons Limited Production of yarn
US11414793B2 (en) * 2018-02-19 2022-08-16 Paolo Benelli Elastic core yarns based on linen, or hemp, or other materials, and elasticized fabrics therefrom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5362433A (en) * 1986-12-17 1994-11-08 Viscosuisse S.A. Process of making polyurethane elastomer thread

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115745A (en) * 1962-06-13 1963-12-31 Chadbourn Gotham Inc Method of drawing, covering and stabilizing synthetic elastomeric yarn
US3243950A (en) * 1963-11-27 1966-04-05 Monsanto Co Method of making elastic core yarns
US3342028A (en) * 1965-04-21 1967-09-19 Kurashiki Rayon Co Method of producing an elastic core yarn
US3349458A (en) * 1965-10-14 1967-10-31 Du Pont Process for producing an elastic fabric
US3357076A (en) * 1965-12-27 1967-12-12 Celanese Corp Yarn and fabrics having stretch properties
US3387451A (en) * 1967-02-27 1968-06-11 Chadbourn Gotham Inc Covered stretch yarn and method for producing
US3387448A (en) * 1963-12-30 1968-06-11 Chadbourn Gotham Inc Stretched and stabilized yarns and fabrics

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3115745A (en) * 1962-06-13 1963-12-31 Chadbourn Gotham Inc Method of drawing, covering and stabilizing synthetic elastomeric yarn
US3243950A (en) * 1963-11-27 1966-04-05 Monsanto Co Method of making elastic core yarns
US3387448A (en) * 1963-12-30 1968-06-11 Chadbourn Gotham Inc Stretched and stabilized yarns and fabrics
US3342028A (en) * 1965-04-21 1967-09-19 Kurashiki Rayon Co Method of producing an elastic core yarn
US3349458A (en) * 1965-10-14 1967-10-31 Du Pont Process for producing an elastic fabric
US3357076A (en) * 1965-12-27 1967-12-12 Celanese Corp Yarn and fabrics having stretch properties
US3387451A (en) * 1967-02-27 1968-06-11 Chadbourn Gotham Inc Covered stretch yarn and method for producing

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3788365A (en) * 1971-05-26 1974-01-29 Johnson & Johnson Narrow elastic fabric for use as waistband in articles of apparel
US3788366A (en) * 1971-10-04 1974-01-29 Johnson & Johnson Narrow elastic fabric
US3983687A (en) * 1972-04-10 1976-10-05 Courtaulds Limited Method of producing covered elastic yarn
US4228639A (en) * 1978-07-19 1980-10-21 James Mackie & Sons Limited Production of yarn
US11414793B2 (en) * 2018-02-19 2022-08-16 Paolo Benelli Elastic core yarns based on linen, or hemp, or other materials, and elasticized fabrics therefrom

Also Published As

Publication number Publication date
ES362928A1 (es) 1970-11-16
IL31407A (en) 1972-04-27
DE1901204A1 (de) 1969-08-07
FR2000960A1 (xx) 1969-09-19
IL31407A0 (en) 1969-03-27
GB1201433A (en) 1970-08-05
IE32842L (en) 1969-07-30
AT313462B (de) 1974-02-25
CH487277A (de) 1970-03-15
RO56655A (xx) 1974-06-01
NL6900357A (xx) 1969-08-01
IE32842B1 (en) 1973-12-28
SE342264B (xx) 1972-01-31
BE727558A (xx) 1969-07-01

Similar Documents

Publication Publication Date Title
US2974391A (en) Process and apparatus for making crimped filaments
US3061998A (en) Bulked continuous filament yarns
US3077724A (en) Apparatus for processing yarns
US3388030A (en) Twistless synthetic multifilament yarns and process for making the same
US3137119A (en) Process for the production of high bulk yarns
US4035464A (en) Process for the production of polyamide-6 filament yarns
US3112600A (en) Method and apparatus for processing yarns
US3287888A (en) Apparatus for the treatment of synthetic filaments
US3828542A (en) Novel effect yarns and process for producing the same
US3540204A (en) Method for manufacturing an improved elastic yarn covered with multifilament
US2890568A (en) Production of voluminous yarn
US3358345A (en) Process and apparatus for crimping strands
US3527045A (en) Production of yarns
US2517946A (en) Method of producing yarn
US2803108A (en) Methods of processing textile yarns
US3030173A (en) Process for the uniform preparation of shaped structures such as filaments or foils from high-melting linear polyesters
US2339323A (en) Treatment of synthetic textile fibers
US3444681A (en) Bulkable composite polyester yarn of continuous filaments having different residual shrinkage after boiloff
US3112551A (en) Process for the manufacture of crimped filament yarns
US3651201A (en) High-elongation-and-tenacity nylon tire yarn
US3382658A (en) Apparatus for manufacturing textured filament yarns
NL7905234A (nl) Werkwijze voor het vervaardigen van een synthetisch crepegaren.
US3493646A (en) Drawing and heat relaxing nylon yarn
US3239304A (en) Production of crimped yarns
US3560604A (en) Process for making textured polypropylene filaments