US3716981A - Method for manufacturing linen yarn, and linen yarn obtained by application of this method - Google Patents

Method for manufacturing linen yarn, and linen yarn obtained by application of this method Download PDF

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Publication number
US3716981A
US3716981A US00136724A US3716981DA US3716981A US 3716981 A US3716981 A US 3716981A US 00136724 A US00136724 A US 00136724A US 3716981D A US3716981D A US 3716981DA US 3716981 A US3716981 A US 3716981A
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Prior art keywords
roving
rollers
fibers
percent
water
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US00136724A
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C Bok
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Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Assigned to NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST-NATUURWETEN-SCHAPPELIJK ONDERZOEK, THE reassignment NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST-NATUURWETEN-SCHAPPELIJK ONDERZOEK, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TEN BEHOEVE VAN NIJVERHEID, HANDEL EN VERKEER
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    • 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
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads

Definitions

  • ABSTRACT A process for the manufacture of linen yarn in which both twisting and sizing have been eliminated.
  • the coherence of the fibers is provided by the natural adhesives which, after a specific chemical decomposition of flax, are still present in the resulting fibers.
  • a roving of these fibers is drafted in a wet condition that is defined by the fact that the fibers have a water content between 200 and 350 percent when they are travelling through the drafting device, is false-twisted upon delivery from the drafting device, would to a bobbin at a speed that is substantially the same as the delivery speed of the drafting device, and finally dried.
  • the invention relates to a method for the manufacture of linen yarns that are suitable to be used unsized as weaving-yam and knitting-yam, and in particular to such a method in which fibrous material is gained from flax by mechanical operations, this fibrous material is processed into a continuous fiber strand such as a roving or a sliver, the fiber stand is subjected to a chemical treatment that decomposes the fibrous material and brings the pectines, hemi-celluloses and such bonding agents, present in it by nature, into a form in which they are suitable to bring about by drying a mutual joint of the fibers, the fiber strand treated is fed in wet condition to a drafting device so as to be spun into yarn, the yarn is wound into a packet and this packet is dried.
  • a method of this kind in which the coherence between the fibers in the spun yarn, caused by the natural adhesives, is used in order that a lower value for the twist brought into a yarn upon winding the yarn packet may suffice, so as to be able to decrease the adverse effect of a higher twist on some properties of the yarn, such as the tensile strength.
  • the method known in the art cannot yield a considerable increase in velocity.
  • the number of revolutions of the winding device which is the product of the velocity and the twist number of the yarn, would at constant twist have to be increased to the same extent as the yarn velocity, but for machine-technical reasons and reasons of economy is tied down to a maximum of abt. 12,000 r.p.m.. Neither is, at a constant speed of the winding device, a further decrease in twist a way to realize a higher yarn velocity, because by a decrease in twist the strength of the yarn that in a wet condition moves from the drafting device to the winding device becomes insufficient for the tensions that are unavoidably generated there by the rapid rotation of the winding device.
  • the method according to the invention is characterized in that the fiber strand is delivered to the drafting device in a substantially saturated wet condition; in that the fiber strand is run into, through and out of the drafting device in upward direction; in that one of the feed rollers of the drafting device is a smooth rubber roller and the other a serrated roller, the hardness of the rubber roller, the shape and the size of the serrations and the pressure of one roller on to the other are chosen in such a connection that the fiber strand after having passed.
  • these rollers still contains at least 200 and at most 350 percent water; in that the delivery velocity of the drafting device is at least 50 m/min.; in that the fiber strand is false-twisted immediately after drafting and is fed to a winding device whose speed of rotation is chiefly equal to the delivery speed of the drafting device.
  • drafting the fiber strand which, after passing the feedrollers, has a water content between 200 and 350 percent, preferably between 250 and 300 percent, at a delivery speedabove 50 m/min., proceeds with a large extent of evenness that still increases at higher speeds, without particular means for an external control of the drafting being necessary. At velocities of 200 m/min. no indications have been found that there would be objections against still further raising the velocity.
  • the invention also relates to the yarn that is obtained by application of the method described. It is characterized by the complete absence of twist and any sizing agent but it nevertheless has sufficient tensile strength, wear and shock resistances to be well workable and yields fabrics and knittings that are at least equal to and as a rule better than the corresponding products that are manufactured from twisted yarns according to the method known in the art.
  • the yarn distinguishes itself in terms of appearance by a somewhat flat cross-section, which arises in drafting and which is permanent owing to the lack of twist. in a fabric the yarn comes to lie flat so that the fabric has a more closed structure and is i.a. particularly suitable to be made windproof and waterproof for application as tent cloth and the like.
  • Reel 1 contains roving 2, which by mechanical processings is obtained from green, retted or partially retted flax and then is treated chemically with, for instance, successively an alkali hydroxide solution and an alkali chlorite solution.
  • roving 2 which by mechanical processings is obtained from green, retted or partially retted flax and then is treated chemically with, for instance, successively an alkali hydroxide solution and an alkali chlorite solution.
  • the concentration and temperature of the solutions and the duration of the treatment the pectines and hemicelluloses present in the fibrous material are brought in such a condition that the elementary fibers, from which the so-called technical fibers, mechanically obtained, are composed, are released sufficiently to be able to shift along each other.
  • the wet condition of the roving is preferably maintained for the benefit of the subsequent wet-spinning process.
  • Wet roving 2 is wound from reel 1, which is freely rotatable, and it is run over guides 3 and 4 through water 5 in trough 6, so that it comes into a saturated wet condition. Instead of running roving 2 through a trough with water, it can also be rinsed with an excess of water, which process makes it saturatedly wet.
  • roller 7 is provided with a rubber belt 9.
  • roller 8 at its periphery is provided with serrations, whose height is 1.5 to 2 times as great as the serrations usually employed in known spinning processes.
  • Roller 7 is pressed against roller 8 with a constant force.
  • roving 2 after having passed rollers 7 and 8 still has a water content of preferably 250 to 300 percent.
  • roller 1 1 is provided with a smooth rubber tread l3 and is pressed against roller 12 with a constant force.
  • the pressing-point of delivery rollers 11 and 12 is at a distance of 10 cm from the pressing-point of feed rollers 7 and 8.
  • Scraper 14 serves for the removal of loose fibers, impurities and excess of water, which would remain on roller 1 1.
  • roving 2 is drafted in drafting field 10 into a thin fiber sliver 15.
  • delivery rollers 11 and 12 this is carried through vortex chamber 16, in which a very quickly rotating vortex of air is roused by pressurized-air supply 17. In its rotation the vortex of air takes along thin sliver 15, so that the latter is falsetwisted.
  • sliver 15 is wound upon bobbin core 18 into a packet 19, which is rotated at a constant circumferential speed by driven roller 20.
  • This velocity is chosen in such a connection with the circumferential speed of delivery rollers 11 and 12 that sliver 15 is wound up substantially free from tension.
  • Ready product 19 is taken from the machine and dried, whereafter the thin sliver can be wound from it as a yarn that, without sizing, is normally usable as weaving-yarn and knitting-yam.
  • a method for manufacturing unsized linen yarn including mechanically processing flax to obtain a roving of fibrous material, chemically treating the roving to release the elementary fibers of which the fibrous material is composed and bring the pectines and hemicelluloses present by nature in the flax into a form in which they are suitable to bond the fibers together on drying, wherein the improvement comprises:
  • a linen yarn obtained by application of the process defined in claim 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US00136724A 1970-04-28 1971-04-23 Method for manufacturing linen yarn, and linen yarn obtained by application of this method Expired - Lifetime US3716981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7006240A NL7006240A (xx) 1970-04-28 1970-04-28

Publications (1)

Publication Number Publication Date
US3716981A true US3716981A (en) 1973-02-20

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ID=19809983

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US00136724A Expired - Lifetime US3716981A (en) 1970-04-28 1971-04-23 Method for manufacturing linen yarn, and linen yarn obtained by application of this method

Country Status (7)

Country Link
US (1) US3716981A (xx)
BE (1) BE766353A (xx)
CS (1) CS164294B2 (xx)
DE (1) DE2120343A1 (xx)
FR (1) FR2096738B1 (xx)
GB (1) GB1342017A (xx)
NL (1) NL7006240A (xx)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877214A (en) * 1971-10-05 1975-04-15 Hollandse Signaalapparaten Bv Method for the manufacture of yarn
US3945186A (en) * 1973-03-01 1976-03-23 Hollandse Signaalapparaten B.V. Method of manufacturing twistless yarn and the product thereof
US4499717A (en) * 1981-07-22 1985-02-19 N P S P "Novotex" Method of and apparatus for producing twistless yarns from glued separate fibers fitted together
CN100591818C (zh) * 2007-08-20 2010-02-24 江苏紫荆花纺织科技股份有限公司 麻纤维纺纱方法及其纱线
US8475628B1 (en) 2011-03-29 2013-07-02 Hbi Branded Apparel Enterprises, Llc Process and apparatus for orienting bast stalks for decortication
US8635844B1 (en) 2011-03-29 2014-01-28 Hbi Branded Apparel Enterprises, Llc Method for harvesting bast plants

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700932A (nl) * 1987-05-19 1988-11-16 Kostromskoe Sp K Bjuro Textiln Machine voor het vervaardigen van twistloos garen uit vlasvezel.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1051361A (en) * 1905-02-03 1913-01-21 George Charles Gillespie Young Process of spinning.
US1905268A (en) * 1930-11-05 1933-04-25 Textile Patent & Process Co In Method of drafting textile fibers
US3447310A (en) * 1966-07-07 1969-06-03 Tno Method for the production of yarn and a yarn obtained by applying the said method
US3512232A (en) * 1966-11-23 1970-05-19 Deering Milliken Res Corp Process for preparing twistless yarns
US3548462A (en) * 1964-02-15 1970-12-22 Pavena Ag Process for the preparation of a fiber arrangement or strand composed of staple fibers for undergoing a subsequent high draft
US3577872A (en) * 1969-06-02 1971-05-11 Ppg Industries Inc Method and apparatus for coating textile material

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1051361A (en) * 1905-02-03 1913-01-21 George Charles Gillespie Young Process of spinning.
US1905268A (en) * 1930-11-05 1933-04-25 Textile Patent & Process Co In Method of drafting textile fibers
US3548462A (en) * 1964-02-15 1970-12-22 Pavena Ag Process for the preparation of a fiber arrangement or strand composed of staple fibers for undergoing a subsequent high draft
US3447310A (en) * 1966-07-07 1969-06-03 Tno Method for the production of yarn and a yarn obtained by applying the said method
US3512232A (en) * 1966-11-23 1970-05-19 Deering Milliken Res Corp Process for preparing twistless yarns
US3577872A (en) * 1969-06-02 1971-05-11 Ppg Industries Inc Method and apparatus for coating textile material

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877214A (en) * 1971-10-05 1975-04-15 Hollandse Signaalapparaten Bv Method for the manufacture of yarn
US3945186A (en) * 1973-03-01 1976-03-23 Hollandse Signaalapparaten B.V. Method of manufacturing twistless yarn and the product thereof
US4499717A (en) * 1981-07-22 1985-02-19 N P S P "Novotex" Method of and apparatus for producing twistless yarns from glued separate fibers fitted together
CN100591818C (zh) * 2007-08-20 2010-02-24 江苏紫荆花纺织科技股份有限公司 麻纤维纺纱方法及其纱线
US8475628B1 (en) 2011-03-29 2013-07-02 Hbi Branded Apparel Enterprises, Llc Process and apparatus for orienting bast stalks for decortication
US8635844B1 (en) 2011-03-29 2014-01-28 Hbi Branded Apparel Enterprises, Llc Method for harvesting bast plants
US9107342B2 (en) 2011-03-29 2015-08-18 Hbi Branded Apparel Enterprises, Llc Method for harvesting bast plants
US9510507B1 (en) 2011-03-29 2016-12-06 Hbi Branded Apparel Enterprises, Llc Overhanging tines for orienting bast stalks

Also Published As

Publication number Publication date
CS164294B2 (xx) 1975-11-07
GB1342017A (en) 1973-12-25
FR2096738B1 (xx) 1975-02-21
DE2120343A1 (de) 1971-12-02
NL7006240A (xx) 1971-11-01
BE766353A (nl) 1971-10-27
FR2096738A1 (xx) 1972-02-25

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Owner name: NEDERLANDSE CENTRALE ORGANISATIE VOOR TOEGEPAST-NA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TEN BEHOEVE VAN NIJVERHEID, HANDEL EN VERKEER;REEL/FRAME:003864/0013

Effective date: 19801222