US3670490A - Processing of flax derived yarns - Google Patents

Processing of flax derived yarns Download PDF

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Publication number
US3670490A
US3670490A US35865A US3670490DA US3670490A US 3670490 A US3670490 A US 3670490A US 35865 A US35865 A US 35865A US 3670490D A US3670490D A US 3670490DA US 3670490 A US3670490 A US 3670490A
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United States
Prior art keywords
yarn
frictional engagement
twist
false twisting
false
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Expired - Lifetime
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US35865A
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English (en)
Inventor
Adrian W Kneafsey
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Ernest Scragg and Sons Ltd
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Ernest Scragg and Sons Ltd
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Publication date
Application filed by Ernest Scragg and Sons Ltd filed Critical Ernest Scragg and Sons Ltd
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C19/00—Breaking or softening of fabrics
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J3/00—Modifying the surface

Definitions

  • ABSTRACT A method of processing flax derived yarns having a natural stiffness due to the presence of a resin bonding size in the yarn to make the yarn more suitable for production into a fabric.
  • the yarn is given a false twist by passing it in frictional engagement with a linearly preceding portion of itself to physically work the yarn thereby breaking down the bonding size.
  • This natural yarn stiffness in the linen can be at least partially alleviated by chemically removing the bonding size, and indeed usually is so removed during normal chemical treatment of the fabric, such as scouring.
  • chemically removing the bonding size indeed usually is so removed during normal chemical treatment of the fabric, such as scouring.
  • to carry out a special chemical process for the purpose of removing the size prior to forming the yarn into fabric would be too costly to be economically possible.
  • a method of processing flax derived yarn which comprises passing the yam in continuous movement transversely across and in frictional engagement with a linearly preceding portion of itself, whereby a false twist is applied to the yarn at the position of frictional engagement, which runs back in the yarn preceding said position.
  • the false twist may be applied in a direction tending to increase, cluring false twisting, the true twist already present in the yarn.
  • the false twist may be applied in a direction tending to reduce, during false twisting, the true twist already present in the yarn.
  • the product yarn is softer and more pliable than in the former case, but is also weaker under tension and contains more broken filaments and is generally more hairy than in the former case.
  • the yarn may be processed by being continuously passed around a guide, or a fixed or rotatable pulley, and then moved transversely across a portion of the yarn approaching the guide or pulley.
  • a rotatable pulley this may be freely rotatable or it may be driven or, in some instances, incorporate a rotation retarding member such as a friction braking member.
  • the yarn may be formed into a knot at the position (hereinafter called the false twisting position) where it frictionally engages transversely with itself.
  • This knot may be of a simple form, e.g. one part of the yarn may be looped around the other.
  • the yarn may be positively fed towards the false twisting position by means for example of a positively driven capstain pulley, and the yarn may be positively fed from the false twisting position directly to a yarn take up package.
  • the yarn may be pulled up to and through the false twisting position solely by positive drive means situated beyond the false twist position, the yarn being subjected to a controlled tension means disposed prior to false twisting in order to apply a tension to the yarn during false twisting appropriate to the friction requirements for twisting.
  • the tension means may be adjustable to provide for adjustment of the tension in the yarn and hence the friction during false twisting.
  • Adjustment of the friction during twisting may also be obtained by varying the relative angles of approach to and retreat from the false twisting position. This may be accomplished in part by arranging that the yarn alter finally leaving the false twisting position passes around a guide member the position of which is adjustable relative to the false twisting position.
  • FIG. 1 is a diagrammatic view of one embodiment of yarn processing apparatus according to the invention.
  • FIG. 2 is an enlarged side elevation of the false twisting portion of the apparatus shown in FIG. 1;
  • FIG. 3 is a front elevation of the portion of apparatus shown in FIG. 1.
  • yam 1 from a supply package 2 passes through a straightening wire finger guide 3, over a guide 4 and then around a magnetic hysteresis tensioning and twist stopping device 5 of a well known kind.
  • the device 5 is capable of adjustment to vary the tension.
  • the yarn then passes around a guide 6 and on to a false twisting position generally indicated by numeral 7.
  • the yarn approaching from the guide 6 passes around a freely rotatable grooved pulley 8 mounted in a bearing 9 and upon leaving this pulley is wrapped around the approaching portion of the yarn as shown at 7. Thereafter the yarn passes around a further freely rotatable grooved pulley 10.
  • the pulley 10 is mounted for rotation upon an ann 11 which in turn is pivotable about the axis of rotation of the pulley 8 so that the position of the pulley 10 is infinitely variable about the axis of the pulley 8.
  • the yarn After leaving the pulley 10 the yarn passes around a positive drive pulley l2 and associated nip roller 13, and then on to a take up package 14 carried by a bobbin 15, the package 14 being driven by frictional engagement with a positively driven drum 16.
  • the yarn is cross-wound on to the package 14 by means of a yarn traverse guide 17 mounted on a reciprocatary traversing wire 18, reciprocated by a known traversing means (not shown for simplicity).
  • the false twist applied to the yarn can be varied, and hence the degree of opening and flexibility given to the yarn can be varied.
  • Method of processing flax derived yarn having a natural stiffness due to the presence of a resin bonding size in the yarn which comprises passing the yarn in continuous movement transversely across and in frictional engagement with a linearly preceding portion of itself whereby a false twist is applied to the yarn, at the position of frictional engagement, which runs back in the yarn preceding said position, the yarn being physically worked by the false twisting whereby the bonding size is broken down so as to reduce the stifiness in the yarn and make the yarn sufficiently malleable to be capable of knitting.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US35865A 1969-05-08 1970-05-08 Processing of flax derived yarns Expired - Lifetime US3670490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2352169 1969-05-08

Publications (1)

Publication Number Publication Date
US3670490A true US3670490A (en) 1972-06-20

Family

ID=10196973

Family Applications (1)

Application Number Title Priority Date Filing Date
US35865A Expired - Lifetime US3670490A (en) 1969-05-08 1970-05-08 Processing of flax derived yarns

Country Status (3)

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US (1) US3670490A (fr)
BE (1) BE750118A (fr)
FR (1) FR2047453A5 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6643901B1 (en) * 2000-11-01 2003-11-11 Ppg Industries Ohio, Inc. Loom beams
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

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035396A (en) * 1957-08-21 1962-05-22 Patentex Inc Torque low twist yarn and machine and method for producing the same
US3148520A (en) * 1957-08-21 1964-09-15 Patentex Inc Method for simultaneously throwing and knitting of yarn
US3178795A (en) * 1962-10-10 1965-04-20 Deering Milliken Res Corp Method for edge crimping thermoplastic yarns
US3360838A (en) * 1965-10-20 1968-01-02 Alamance Ind Inc Method of forming a non-torque curled yarn

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3035396A (en) * 1957-08-21 1962-05-22 Patentex Inc Torque low twist yarn and machine and method for producing the same
US3148520A (en) * 1957-08-21 1964-09-15 Patentex Inc Method for simultaneously throwing and knitting of yarn
US3178795A (en) * 1962-10-10 1965-04-20 Deering Milliken Res Corp Method for edge crimping thermoplastic yarns
US3360838A (en) * 1965-10-20 1968-01-02 Alamance Ind Inc Method of forming a non-torque curled yarn

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6643901B1 (en) * 2000-11-01 2003-11-11 Ppg Industries Ohio, Inc. Loom beams
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
BE750118A (fr) 1970-10-16
FR2047453A5 (fr) 1971-03-12

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