EP0579558B1 - Endloskabel aus polyamid und Verfahren zur deren Herstellung - Google Patents

Endloskabel aus polyamid und Verfahren zur deren Herstellung Download PDF

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Publication number
EP0579558B1
EP0579558B1 EP19930420253 EP93420253A EP0579558B1 EP 0579558 B1 EP0579558 B1 EP 0579558B1 EP 19930420253 EP19930420253 EP 19930420253 EP 93420253 A EP93420253 A EP 93420253A EP 0579558 B1 EP0579558 B1 EP 0579558B1
Authority
EP
European Patent Office
Prior art keywords
tow
filaments
polyamide
sizing agent
sizing
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
EP19930420253
Other languages
English (en)
French (fr)
Other versions
EP0579558A1 (de
Inventor
Charles Cavalie
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.)
Novalis Fibres
Original Assignee
Novalis Fibres
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 Novalis Fibres filed Critical Novalis Fibres
Publication of EP0579558A1 publication Critical patent/EP0579558A1/de
Application granted granted Critical
Publication of EP0579558B1 publication Critical patent/EP0579558B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
    • D06M13/402—Amides imides, sulfamic acids
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
    • 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
    • D02G3/02—Yarns or threads characterised by the material or by the materials from which they are made
    • 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
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2331/00—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products
    • D10B2331/02—Fibres made from polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polycondensation products polyamides

Definitions

  • the present invention relates to a coherent and regular cable of continuous polyamide-based filaments intended for the preparation of short fibers.
  • It also relates to a method for obtaining such a cable.
  • Continuous filament cables intended to be cut and used for example for electrostatic projection are generally present, in packages, in the form of folded lengths regularly arranged side by side and on top of each other, so that the packages or cartons can be easily transported from one place to another, stored and stored for a long time until their later use.
  • the cables When the cables are intended to be used for electrostatic projection, their presentation must be particularly careful, and in particular the continuous filaments constituting them must be kept perfectly parallel to each other and be free from any irregularity such as breaks, loops etc. .., so that they can then be handled.
  • the filaments, at the outlet of their packaging are always taken up while keeping the strands parallel to each other and having good cohesion between them either to be brought to the cutter or to be widened and spread out without becoming entangled.
  • one solution consists in carrying out a helical wrapping by means of one or more identical or different wires, according to a process described in FR 2 188 625.
  • Such a solution is expensive. and heavy in the context of industrial production.
  • the present invention relates to continuous filament cables, generally intended to be cut in the form of short fibers, having an overall titer greater than 110 ktex, generally greater than 180 ktex, having a moisture content equal to or greater than 15% generally up to '' at 40% and a sizing ratio of between 0.05 and 0.20% by weight relative to the weight of the polyamide, preferably from 0.05 to 0.15%, the sizing ratio being measured according to the method described below.
  • the size is in the form of an aqueous emulsion of sulphited fatty amide.
  • the cable can be made up of filaments of very variable strand titer, which can range from very fine titer for example, 0.5 dtex or even less to high titer for example 40 dtex or even more depending on the desired applications (clothing, furniture, car seats, carpets) according to the process for obtaining continuous filaments.
  • very fine titer for example, 0.5 dtex or even less to high titer for example 40 dtex or even more depending on the desired applications (clothing, furniture, car seats, carpets) according to the process for obtaining continuous filaments.
  • the strand titers can be much higher and go up to 100 dtex or more.
  • the cables according to the invention are more specifically intended for use in an electrostatic field but other uses can be envisaged.
  • the present invention also relates to a process for obtaining cables of continuous filaments defined above by spinning in the usual manner of polyamide, the filaments being converged then sized, wetted, and grouped in the form of wicks which are themselves combined in a regular tablecloth; this is essentially stretched by passing between at least two trains of rollers rotating at different speeds and again moistened by passing through one or more trays containing an aqueous sizing emulsion; after passage of the sheet between a last train of expressing rollers, it is taken up again to constitute the final cable which will be packed.
  • the continuous filaments are air-cooled and drawn at a rate ⁇ 2.5 x, depending on the titer of the individual filaments which it is desired to obtain.
  • stretching is not necessary.
  • PA6-based filaments must necessarily be treated with heat to obtain a low shrinkage rate.
  • the heat treatment is generally carried out at a variable temperature, for example between 150 ° C. and 220 ° C. depending on the strand count of the continuous filaments.
  • the heating means is generally placed after the train of recovery or drawing rollers, but before the expressing rollers; these are located at the end of treatment in order to precisely regulate the final humidity and sizing rates.
  • the final humidity level is generally continuously checked to ensure good humidity regularity. After pressing, the layer of filaments is taken up in a known manner on these rollers to form the final cable.
  • the continuous filament cables according to the invention have a large overall titer, greater than 110 ktex, generally greater than 180 ktex which can range up to 270 ktex or even more. They have a moisture content of more than 15%, up to 40% or even more; it has on the one hand, the advantage of giving both flexibility, cohesion and good parallelization of the strands between them without requiring covering or any other device capable of keeping the strands parallel, and on the other hand that of facilitate cutting in cutters by avoiding the use of a deposit of too large size, expensive and troublesome for the subsequent treatments, dyeing and / or deposit of electrolytes intended for the activation treatment.
  • the filament cable according to the present invention also has the advantage of having a low sizing ratio of between 0.05 and 0.20% by weight of the cable, preferably 0.05 to 0.15% or even 0, 05 to 0.1%.
  • Sizing products are still used and necessary in the preparation of threads and fibers and textiles to facilitate their passage over the mechanical components and the sliding of the strands between them.
  • the sizing agents, together with the moisture content contained in the wires must also contribute to the flexibility and cohesion of the cable and facilitate passage through the cutters, thus avoiding excessively rapid wear. knives, wear which deteriorates the edge of the blade and causes the strands to stick together by pressing.
  • the products used for sizing the filaments according to the invention are preferably aqueous emulsions of the anionic type.
  • a sulfite fatty amide composition is used.
  • Sopromine 1686 sold by the company Rhône-Poulenc Spéciality Chimiques, but other sizes may also be suitable.
  • polyamide means all the spinnable and transformable polyamides for obtaining threads, for example polyamide 6, and preferably polyamide 66 or copolyamides containing at least 85% of hexamethylene adipamide units and up to 15% of other units obtained by replacing, for example, the starting adipic acid with caprolactam.
  • the starting polyamides may also contain additives such as matting agents, stabilizers with respect to light, or with respect to heat, and to oxidation, additives intended to reduce the accumulation of static charges or modifying the dyeing ability, etc.
  • the cable thus prepared is preferably sterile and protected for the time of storage. This protection is carried out during the last stages of the process by known broad spectrum fungicides, compatible with the toxicity standards. It allows storage in a very humid environment at 40% water or more, for several months at high ambient temperatures.
  • the continuous filaments constituting the cable according to the invention can have any suitable shape depending on the aspects desired on the finished article, glossy, silky appearance, etc.
  • the structure can be round, three-lobed or multi-lobed, hollow, etc. depending on the desired appearance and characteristics.
  • the relative viscosity of the starting polymer measured on a 90% w / v solution in formic acid is a viscosity usually used for spinning polyamides.
  • polyamide 66 it is usually in a range between 35 and 40 or 45. But for filaments subjected to high stresses it must be increased to values which can go up to 60 or 80.
  • a polyhexamethylene adipamide of relative viscosity 41 measured on a 90% solution in formic acid containing approximately 0.5% of titanium oxide is usually spun, the filaments being cooled in air at room temperature, then converged and moistened with an aqueous emulsion of a sizing agent known under the brand name Sopromine 1686 from the company Rhône-Poulenc Spéciality Chimiques (CAS No. 94-200-336) to produce a coherent wick which is returned in a known manner.
  • 60 strands of total titer 144,000 dtex produced in an identical manner are combined in the form of a sheet and pass through a drawing device composed of several trains of rollers rotating at different speeds to obtain a drawing rate of 3.2 X.
  • the sheet Before passing over the last train of stretching rollers, the sheet is again moistened by passing through a tank containing the same aqueous sizing emulsion as that indicated above, then expressed to adjust the final humidity level to 19 % w / w dry matter and the sizing rate at 0.05% w / w.
  • the sheet is taken up by rollers to form the final cable with a total title of 270 ktex, composed of title filaments with a strand of 1.7 dtex having the humidity and sizing rate indicated above.
  • Such a cable has practically parallel, coherent and manipulable filaments. It is directly placed in a waterproof bag to prevent moisture loss; itself is placed in a suitable packaging that can be handled and stacked.
  • this cable can either be brought to a rotary industrial cutter (for example a MATSUSHITA® or PIERRET® or OMT ® cut) to make a cut of desired length, or spread out to be dyed, then treated electrostatically on the surface (treatment of activation) in order to carry out an electrostatic projection in a known manner.
  • a rotary industrial cutter for example a MATSUSHITA® or PIERRET® or OMT ® cut
  • a wick with a total titer of 144,000 dtex is prepared according to the process indicated in Example 1, and 40 of these wicks are combined in the form of a sheet, the sheet being treated in the manner indicated above, that is to say say stretched at a rate of 3.2 X, sized with the same aqueous emulsion as that used in Example 1, and expressed in the manner indicated above to obtain a humidity rate of 30% and a rate of 0.15% size.
  • the final cable also has an overall titer of 180 ktex and the filaments a strand titer of 0.9 dtex. It is directly packed, can be stored without problems and used for cutting or dyeing.
  • a lock was prepared as indicated in Example 1, with a total titer of 95,000 dtex (after drawing).

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (14)

  1. Kabel aus Endlosfäden auf der Basis von Polyamid, das einen Gesamttiter über 110 ktex, einen Feuchtigkeitsgehalt oberhalb von 15% und einen Schmälzmittelgehalt zwischen 0,05 und 0,20 Gew.-% des Kabels besitzt.
  2. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß es einen Gesamttiter oberhalb von 180 ktex besitzt.
  3. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß das Schmälzmittel eine anionische wäßrige Emulsion auf der Basis einer sulfitierten Fettamid-Zusammensetzung ist.
  4. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß es einen Feuchtigkeitsgehalt zwischen einschließlich 15 und 40% aufweist.
  5. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß es einen Schmälzmittelgehalt zwischen einschließlich 0,05 und 0,15% aufweist.
  6. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß der Einzelfasertiter zwischen einschließlich 0,5 und 40 dtex ist.
  7. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß der Einzelfasertiter zwischen einschließlich 0,6 und 10 dtex ist.
  8. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß es für die Herstellung von kurzen Fasern für das elektrostatische Spritzen bestimmt ist.
  9. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß das verwendete Polyamid Polyamid 6 ist.
  10. Kabel nach Anspruch 1, dadurch gekennzeichnet, daß das verwendete Polyamid Polyamid 66 ist.
  11. Verfahren zur Herstellung von Kabeln nach Anspruch 1, das die folgenden Schritte umfaßt:
    - Schmelzspinnen des Polyamids, wobei die Fäden gekühlt, dann zusammengefaßt und mit einer wäßrigen Schmälzemulsion befeuchtet und in die Form einer Lunte gebracht werden,
    - Umgruppierungen von mehreren identischen Lunten in die Form eines Tuchs bzw. eines Vlieses, das durch eine wäßrige Schmälzemulsion befeuchtet, dann ausgedrückt wird, um den gewünschten Gehalt an Feuchtigkeit und Schmälzmittel zu erhalten,
    - Aufnehmen des Tuchs bzw. des Vlieses, um das Kabel aus Endlosfäden zu bilden.
  12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das Schmälzmittel eine anionische Verbindung auf der Basis eines sulfitierten Fettamids ist.
  13. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß die Fäden an Luft abgekühlt werden.
  14. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß das Tuch bzw. Vlies, das aus den Lunten besteht, auf ein Verhältnis von ≥ 2,5 X verstreckt wird.
EP19930420253 1992-06-18 1993-06-17 Endloskabel aus polyamid und Verfahren zur deren Herstellung Expired - Lifetime EP0579558B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9207688A FR2692600B1 (fr) 1992-06-18 1992-06-18 Câbles de filaments continus à base de polyamide et leur procédé d'obtention.
FR9207688 1992-06-18

Publications (2)

Publication Number Publication Date
EP0579558A1 EP0579558A1 (de) 1994-01-19
EP0579558B1 true EP0579558B1 (de) 1997-01-15

Family

ID=9431092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930420253 Expired - Lifetime EP0579558B1 (de) 1992-06-18 1993-06-17 Endloskabel aus polyamid und Verfahren zur deren Herstellung

Country Status (3)

Country Link
EP (1) EP0579558B1 (de)
DE (2) DE579558T1 (de)
FR (1) FR2692600B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR790001A0 (en) * 2001-09-25 2001-10-18 Jenkins, Michael Eric An apparatus and method for the humane extermination of cane toads

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2188625A5 (en) * 1972-06-01 1974-01-18 Hartford Spinni G Ltd Compact multifilament tow - encased in oppositely wound wrapper yarns for boxing or cutting into flock
DD118129A1 (de) * 1974-10-09 1976-02-12
GB2123446B (en) * 1982-07-10 1985-12-18 Tba Industrial Products Ltd Untwisted glass yarn

Also Published As

Publication number Publication date
DE579558T1 (de) 1996-02-15
FR2692600B1 (fr) 1994-08-26
FR2692600A1 (fr) 1993-12-24
DE69307415D1 (de) 1997-02-27
EP0579558A1 (de) 1994-01-19

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