EP0472873B1 - Un fil, en particulier un fil à coudre, et procédé pour la réalisation d'un fil - Google Patents

Un fil, en particulier un fil à coudre, et procédé pour la réalisation d'un fil Download PDF

Info

Publication number
EP0472873B1
EP0472873B1 EP91111734A EP91111734A EP0472873B1 EP 0472873 B1 EP0472873 B1 EP 0472873B1 EP 91111734 A EP91111734 A EP 91111734A EP 91111734 A EP91111734 A EP 91111734A EP 0472873 B1 EP0472873 B1 EP 0472873B1
Authority
EP
European Patent Office
Prior art keywords
yarn
component
yarn component
dtex
strength
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
EP91111734A
Other languages
German (de)
English (en)
Other versions
EP0472873A1 (fr
Inventor
Kurt Dipl.-Ing. Truckenmüller
Karl Dipl-Ing. Greifeneder
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.)
Amann and Soehne GmbH and Co KG
Original Assignee
Amann and Soehne GmbH and Co KG
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 Amann and Soehne GmbH and Co KG filed Critical Amann and Soehne GmbH and Co KG
Publication of EP0472873A1 publication Critical patent/EP0472873A1/fr
Application granted granted Critical
Publication of EP0472873B1 publication Critical patent/EP0472873B1/fr
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
    • D02G3/44—Yarns or threads characterised by the purpose for which they are designed
    • D02G3/46—Sewing-cottons or the like
    • 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
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D02G1/165—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam characterised by the use of certain filaments or yarns
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/903—Sewing threads
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S57/00—Textiles: spinning, twisting, and twining
    • Y10S57/905—Bicomponent material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2924—Composite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2976—Longitudinally varying

Definitions

  • the present invention relates to a yarn, in particular a sewing thread, with the features of the preamble of claim 1 and a method for producing such a yarn with the features of the preamble of claim 17, known for example from DE-A-3 844 615.
  • Such yarns can in principle be spun from multifilament fibers, from staple fibers or a mixture of multifilament fibers with staple fibers, such a yarn also being able to be twisted in order to improve the thread closure and thus the resistance of the yarn to mechanical stresses.
  • threads are often used which consist of at least two, usually multifilament thread components, these two thread components twisted with one another both with respect to the thread Number of filaments, the titer and the strength are the same.
  • yarns in particular sewing yarns, are known which are formed from at least two multifilament yarn components, the two yarn components being intermingled by a fluid flow in order to produce such a yarn such that the first yarn component is predominantly arranged in the core of the spun yarn and from is therefore also referred to as the core component and the second yarn component is predominantly located in the outer region of the spun yarn and is therefore referred to as the sheath component or layer.
  • the sheath component has a much greater length, which means that the sheath component (overlay) gives a certain volume to such a core-sheath yarn with the formation of loops, self-crossing loops and / or arches.
  • These core-sheath yarns generally have excellent properties in terms of mechanical resistance, so that they are increasingly being used for sewing threads which are exposed to extreme mechanical stresses during processing.
  • DE 38 34 139 A1 proposes to form the core yarn component and the jacket yarn component from the same, high-strength material.
  • the specific strength of the multifilament core yarn component and the multifilament sheath yarn component according to DE 38 34 139 A1 is at least 40 cN / tex, but preferably more.
  • a yarn with the features of the preamble of claim 1 is known from DE 38 44 615 A1.
  • the known yarn has the core-jacket structure described above and has a first yarn component which is arranged in the core of the yarn and which has a strength between 60 cN / tex and 75 cN / tex.
  • the specific strength of the second yarn component, which is the sheath yarn component is specified in DE 38 44 615 A1 with 20 cN / tex to 75 cN / tex, this publication emphasizing that a high specific strength of the first yarn component (core material) is decisive to achieve the good usage properties of the well-known yarn.
  • the present invention has for its object to provide a core-sheath yarn of the type specified, which has a particularly good mechanical resistance.
  • the yarn according to the invention which is also used in particular as a sewing thread, comprises at least two multifilament yarn components, the first yarn component predominantly forming the core of the yarn and the second yarn component predominantly forming the jacket of the yarn.
  • the two yarns are intermingled, which leads to the fact that the core material, viewed in the axial direction of the spun yarn, runs in a straight line or almost straight line, while the multifilament sheath yarn (layer) with the formation of loops, self-crossing loops and / or arches with the core yarn is swirled and completely or almost completely envelops the core yarn, so that such a yarn has a certain volume and thus a certain bulk.
  • the individual filaments of the second yarn component have a specific strength which is between 5% and 70%, in particular between 10% and 50%, of the specific strength of the individual filaments of the first yarn component.
  • the second yarn component over the cross-section of the spun yarn takes an area F2 that is two to thirty times, in particular five to fifteen times, as large as the area F1 that the first yarn component occupies (on the same cross-sectional area) .
  • a large number, in particular 50 to 150 cross sections is created from the spun yarn over a predetermined length, in particular over a length of 1 meter to 4 meters.
  • the area F 1, which occupies the first yarn component is determined in such a way that a circle with the smallest possible Draw the radius so that all filaments of the first yarn component lie within this circle.
  • the area F 1 is then calculated from this specific cross-section, taking into account the aforementioned smallest possible radius. The averaging of the different cross-sectional areas then gives the corresponding value for the area F 1. Exactly the same method is used to determine the mean value of the cross-sectional area F2, which takes up the individual filaments of the second yarn component, with the second circular area F2 being moved such that the center of the second circular area is placed in the center of the first circular area with each cut .
  • the yarn according to the invention has a number of further advantages. It was found that such a yarn can be processed particularly well, ie without thread breakage. This is attributed to the fact that thread suspensions, which are to be regarded as a preliminary stage for a thread break, do not occur in the yarn according to the invention. Rather, it was recognized that in the yarn according to the invention, individual filaments which are found during processing on certain machine parts, for example on deflection rollers, thread brakes on the needle of a sewing machine and the like.
  • the yarn according to the invention Like., hook, not as with a conventional yarn to the unwanted thread suspensions and thus lead to tearing of the entire yarn, immediately tore due to their low specific strength, so that the yarn according to the invention, despite its relatively high bulk, which increases the risk of entangled individual filaments, nevertheless has excellent resistance to mechanical stresses.
  • the overlay is made from a material whose individual filaments are deliberately low in strength, which means that these individual filaments tear with a slight interlocking, so that the formation of thread suspensions and thus also the subsequent breakage of the entire thread increases prevent.
  • the superiority of the yarn according to the invention compared to a conventionally designed interlaced core-sheath yarn is particularly evident when a sewing thread is created from the yarn according to the invention.
  • the sewing thread according to the invention On the basis of high-speed video recordings during sewing, it was found that the sewing thread according to the invention, the individual filaments of the cover hooking during sewing on sewing machine parts, in particular on the hook and / or the needle, immediately tore due to the predetermined low specific strength, without there was a noticeable slowdown in the forward movement of the sewing thread. Furthermore, it was observed with the yarn according to the invention that the looping of the needle thread required for sewing proceeded perfectly, even if protruding individual filaments got caught.
  • the conventional sewing thread was significantly slowed down when the protruding filaments got caught, since the hooked individual filaments did not tear, so that corresponding deferrals were formed and afterwards the thread as a whole broke or did not sew, since the loops of the needle thread mentioned earlier did not or only were insufficiently trained.
  • the invention Yarn as a sewing thread compared to a conventional sewing thread has a significantly improved sewing behavior, that is to say with the sewing thread according to the invention it is possible in comparison to the conventional sewing thread under industrial sewing conditions (5000 to 7000 stitches per minute), without thread breakage, up to about 50% higher Number of buttonholes or 40 to 60% longer seams.
  • the first possibility provides that a multifilament yarn component is used for the overlay, which, viewed over its axial length, already has the specific strength specified above.
  • the yarn according to the invention has individual filaments in the overlay which, viewed in the axial direction, have sections in which the specific strength of the individual filaments is between 5% and 70%, in particular between 20% and 50%, based on the specific strength of the individual filaments the first yarn component.
  • all of the individual filaments of the overlay have a plurality of predetermined breaking points in the axial direction, so that if the individual filaments get caught during processing, the individual filaments can tear in these sections (predetermined breaking points), which prevents the formation of suspensions and a total yarn breakage.
  • the first possibility reproduced above includes an embodiment of the yarn according to the invention in which the first and second yarn components consist of the same material. Furthermore, the material of the second yarn component has a degree of polymerization that is less than the degree of polymerization of the material from which the first yarn component is made.
  • a multifilament synthetic material for example made of polyester, polyamide 6, polyamide 66, polyethylene or polypropylene, is preferably used as the second yarn component (sheath component), the average molecular weight of which is between 5% and 40%, in particular between 15% and 25%, is below the average molecular weight of the synthetic fiber material of the first yarn component, the average molecular weights being determined viscosimetrically in a conventional manner by the known standards.
  • a preferred embodiment of the yarn according to the invention has a second yarn component in which all the individual filaments or at least the outer filaments seen in the yarn cross section, which give the yarn a certain volume by forming the loops mentioned above, self-crossing loops or arches, an absolute single filament strength less possess than 3.5 cN.
  • the sewing properties of the sewing thread according to the invention are particularly good when the sewing thread comprises a second thread component whose absolute individual filament strength is between 0.5 cN and 3 cN, in particular between 0.8 cN and 2 cN. It is irrelevant whether these absolute single filament strengths are achieved in that the multifilaments have corresponding sections, i.e. predetermined breaking points, or that the multifilaments have the aforementioned constant single filament strengths over their entire length.
  • multifilament yarns whose individual filament titre are between 0.4 dtex and 1.4 dtex, in particular between 0.5 dtex and 0.7 dtex, vary.
  • Multifile second yarn components with such a fine single filament titer ensure that at low mechanical stress due to a hooking of the filaments, these break, so that the formation of thread suspensions and, as a result, the occurrence of yarn breaks is prevented in the yarn according to the invention.
  • the individual filament titer of the second yarn component can also be higher than the titer given above, in particular in a range between 1.4 dtex and 2.5 dtex. It is only necessary to ensure that the individual filaments tear accordingly if they get caught during processing.
  • the strength of the first yarn component which in the yarn according to the invention is predominantly arranged inside the yarn over its cross section and which is completely or almost completely covered by the second yarn component (overlay)
  • the strength of the first yarn component changes after the the intended use of the finished yarn.
  • Multifilaments with a specific strength between 40 cN / tex and 270 cN / tex are usually used for this.
  • sewing threads for normal sewing operations fully meet the requirements regarding the resilience when sewing when the specific strength of the multifilaments of the first thread component is between 60 cN / tex and 120 cN / tex.
  • any multifilament yarn is suitable for this, which in particular has the strengths given above.
  • the high-strength polyester types with a specific strength up to 90 cN / tex
  • polyamide 6 with a specific strength also up to 90 cN / tex
  • polyethylene and polypropylene with specific strengths up to 80 cN / tex
  • high-strength polyethylene fibers especially the gel spun high-strength polyethylene fibers with a specific strength of 270 cN / tex, aromatic polyamide fibers (aramids) with a specific strength of 230 cN / tex, and / or carbon fibers.
  • the individual filament titer of the first yarn component varies in the yarn according to the invention between approximately 0.4 dtex and 5 dtex, preferably between 0.8 dtex and 4 dtex.
  • the number of filaments of the first yarn component is between 16 and 300, in particular between 24 and 96, while the second yarn component has at least one multifilament yarn, the number of filaments of which varies between 20 and 400, in particular between 36 and 120.
  • the total titer of the yarn according to the invention varies between 50 dtex and 500 dtex, preferably between 80 dtex and 300 dtex.
  • a particularly suitable embodiment of the yarn according to the invention which is preferably used as a sewing thread, provides that the mass ratio of the first yarn component to the second yarn component is between about 90:10 to about 50:50, preferably between about 80:20 to about 60:40, is.
  • the foregoing has spoken of the single filaments getting caught in the processing of the yarn. This includes all filament parts protruding from the longitudinal axis of the yarn, in particular also the loops formed and / or loops crossing one another during the intermingling.
  • the present invention is also based on the object of providing a method of the type specified by which the yarn according to the invention described above can be produced particularly simply and economically.
  • the method according to the invention for producing a yarn, in particular a sewing thread provides that at least one first multifilament yarn component is swirled together with at least one second multifilament yarn component by means of a fluid stream, in particular a gas stream.
  • a yarn material is selected as the second yarn component whose individual filaments have a specific strength that between 5% and 70%, preferably between 10% and 50%, of the specific strength of the individual filaments of the first yarn component.
  • the intermingling is carried out in such a way that the second yarn component, viewed in cross-section of the spun yarn, occupies an area F2 which is two to thirty times, in particular five to fifteen times, as large as the area F1 which the first yarn component occupies.
  • Such sections which are also referred to above as predetermined breaking points, can be produced in various ways.
  • a first embodiment of the method according to the invention provides that, in order to produce the sections, the multifilament material of the second yarn component is stretched unevenly over the length of the second yarn component before intermingling with the first yarn component.
  • the individual filaments of the second yarn component are preferably drawn less in the sections here.
  • This can be achieved with a conventional drawing device, for example, by asymmetrically storing the take-off godet around which the multifilament yarn to be drawn is guided. This then leads to the fact that with each rotation of the take-off godet the multifilament yarn of the second yarn component guided around it is drawn less in this section, forming a less stretched section (predetermined breaking point), so that the material in the section has the aforementioned specific strengths.
  • the godet is preferably mounted asymmetrically in such a way that a stretching ratio is generated which is between 30% and 90%, preferably between 60% and 80%, below the usual draw ratio.
  • a second process variant of the process according to the invention provides that to produce the sections (predetermined breaking points) in the multifilament yarn of the second yarn component, a relatively short distance in yarn length, which is preferably between 0.01 mm and 0.5 mm, is thermally treated. As a result, the corresponding yarn material is deliberately thermally damaged in this section, with the result that the strength is correspondingly reduced in this section.
  • the thermal treatment is preferably carried out on the multifilament yarn of the second yarn component before the intermingling of the second yarn component with the first yarn component, although it is of course also possible to carry out such a thermal treatment on the already intermingled yarn , since the second yarn component is predominantly located in the outer layer of the yarn.
  • the thermal treatment of the corresponding sections can take place either by direct contact of the yarn component to be treated or of the spun yarn with a corresponding heating element or indirectly, in the latter case a non-contact treatment with pulsed laser beams is particularly suitable.
  • Another embodiment variant of the method according to the invention provides that the multifilament yarn of the second yarn component is broken down chemically, preferably by hydrolysis, in the sections to produce the sections. This then has the consequence that the average molecular weight of the yarns treated in this way in the sections is considerable in comparison to neighboring yarn areas, for example by about 30% to about 60%, so that the yarn material inevitably experiences a corresponding loss of strength in the sections.
  • an acid in particular an inorganic acid, such as, for example, hydrochloric acid, nitric acid or sulfuric acid, or an alkali, preferably sodium hydroxide solution, is preferably used in a concentration between 1% and 10% before the intermingling onto the multifilament yarn. based on the yarn weight, applied in sections.
  • an application of the acid or alkali can be carried out, for example, by a spray process or by means of a roller which, viewed in the circumferential direction, is provided with at least one raised section which extends in the radial direction.
  • FIGS. 1a to 1c schematically show typical cross sections of a yarn at different locations on this yarn.
  • the thread is denoted overall by 1, the thread shown being one that is used as a sewing thread.
  • the yarn 1 consists of a first yarn component 2, which is arranged in the core of the yarn 1.
  • the first yarn component 2 comprises 36 individual filaments 5, with FIGS. 1 a to 1 c showing only part of the filaments 5.
  • the individual filaments 5 are arranged relatively close to one another with the formation of the first yarn component 2 and have been drawn black throughout to clearly distinguish them.
  • the total titer of the first yarn component is 200 dtex, the specific strength 62 cN / tex.
  • the first yarn component 2 is enveloped by a second yarn component 3, this second yarn component (overlay) likewise having a large number of individual filaments 4, of which only a part is also shown.
  • the second yarn component 3 in the embodiment shown in FIGS. 1a to 1c has 48 filaments 4.
  • About 60% -90% of the filaments 4 of the second yarn component 3 are interwoven with the filaments 5 of the first yarn component 2, ie in the sectional views these filaments 4 are arranged in the area of the core of the yarn and thus within the area F 1, which is expressed in FIGS. 1 a - 1 c by the fact that in the area of the first yarn component 2 filaments 4 b of the second yarn component 3 are located.
  • the remaining portion, ie thus about 10% to 40% of the filaments 4 of the second yarn component 3 are outside the area F 1, which is shown in FIGS. 1 a - 1 c by the reference numerals 4 and 4a are shown.
  • the specific strength of each individual filament 4 of the second yarn component 3 is approximately 35% of the specific strength of each filament 5 of the first yarn component 2.
  • the second circular area F2 was placed in the cross section so that the center of the second circular area F2 falls on the center of the first circular area F1 and that all the filaments 4 and 4a of the second yarn component 3 (overlay) within the circular area F2 with the smallest possible radius are arranged, as is expressed in Figures 1a to 1c by the dashed line.
  • FIGS. 1 a to 1 c represent typical examples of the range of possible cross sections that may be present in a yarn over the length.
  • the schematic illustrations of FIGS Figures 1a and 1c cross-sectional shapes in which the first yarn component 2 is arranged relatively compact, which is expressed in relatively small areas F1.
  • the schematic cross-sectional view according to Figure 1b differs in that here the first yarn component 2 has a relatively open structure and thus a relatively large area F1.
  • the filaments 4 of the second yarn component 3 are relatively evenly distributed over the surface F2 in the schematic cross section according to FIG. 1a.
  • FIG. 2 schematically shows a further embodiment of a yarn 1 in a side view.
  • this yarn 1 consists of a first yarn component 2, which has 36 individual filaments 5 and which are arranged in the core of the yarn 1.
  • the individual filaments 5 run in an almost elongated form in the direction of the longitudinal axis of the yarn 1.
  • the individual filaments 4 of the second yarn component are interlaced, the individual filaments 4 of the second yarn component 3 being loops , Loops, intersecting loops and arches. This results in the cross-sectional area F2 shown schematically in FIG.
  • each individual filament 4 of the second yarn component 3 has sections 8, of which a large number in the longitudinal direction the individual filaments 4 are provided and are each spaced apart.
  • the titer of the single filament 4 is reduced by about 20 to about 60%, in the embodiment shown by about 40%, compared to adjacent regions 9, with the result that the single filaments in the sections 8 tear when the material of the cover gets caught during processing.
  • These sections 8 thus serve as predetermined breaking points.
  • the following exemplary embodiment shows a way of producing such sections 8.
  • a sewing thread was produced, this sewing thread having a pre-drawn polyester multifilament thread with an elementary thread number of 32 and a titer of 200 dtex.
  • the specific strength of this core material was 60 cN / tex.
  • This polyester multifilament core yarn was interlaced with a second yarn component (fancy yarn) in a conventional nozzle in such a way that the sewing thread formed in this way has self-crossing loops and loops.
  • the fancy yarn (polyester multifilament yarn) had an elementary thread count of 42 and a titer of 96 dtex. Before the interlacing, the filaments of the fancy yarn were spread out in such a way that the individual filaments were arranged parallel to one another.
  • a 5% sodium hydroxide solution was sprayed in regions over a distance of 0.05 mm onto the filaments thus spread out over a corresponding nozzle, the liquor absorption being 100% (based on the weight of the yarn).
  • the fancy yarn treated in this way was then passed continuously through a heated tube, the residence time in the heated tube being 5 seconds.
  • the temperature of the heated tube was set at 200 ° C.
  • Strength measurements on samples of the fancy yarn after leaving the heating tube showed that the specific strength of the individual filaments of the fancy yarn component was 40% lower than the specific strength of the single filaments of the core yarn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (32)

  1. Fil (1), en particulier fil à coudre, qui comprend au moins deux composants de fil multifilaments (2, 3), dans lequel le premier composant de fil (2) forme principalement l'âme du fil et le second composant de fil (3) forme principalement l'enveloppe du fil, les deux composants de fil (2, 3) étant tourbillonnés l'un avec l'autre et les filaments individuels (4, 4a, 4b) du second composant de fil (3) présentent une résistance spécifique qui vaut entre 5% et 70%, en particulier entre 10% et 50% de la résistance spécifique des filaments individuels (5) du premier composant de fil (2), caractérisé en ce que, vu dans une coupe transversale du fil filé (1), le second composant de fil (3) occupe une surface (F₂) qui vaut de deux à trente fois, en particulier de cinq à quinze fois, la surface (F₁) qu'occupe le premier composant de fil (2).
  2. Fil selon la revendication 1, caractérisé en ce que le premier composant de fil (2) et le second composant de fil (3) sont constitués du même matériau, et en ce que le second composant de fil (3) présente un poids moléculaire moyen qui vaut entre 5% et 50%, en particulier entre 15% et 25% de moins que le poids moléculaire moyen du premier composant de fil (2).
  3. Fil selon la revendication 1 ou 2, caractérisé en ce que, vus dans la direction axiale, les filaments individuels (4, 4a, 4b) du second composant de fil (3) présentent des parties (8) dans lesquelles la résistance spécifique vaut entre 5% et 70%, en particulier entre 10% et 50% de la résistance spécifique des filaments individuels (5) du premier composant de fil (2).
  4. Fil selon l'une quelconque des revendications 1-3, caractérisé en ce que le second composant de fil (3) comprend des multifilaments (4, 4a, 4b) présentant une résistance absolue des filaments individuels inférieure à 3,5 cN.
  5. Fil selon la revendication 4, caractérisé en ce que le second composant de fil (3) présente des multifilaments (4, 4a, 4b) dont les filaments individuels présentent une résistance absolue valant entre 0,5 cN et 3 cN, et de préférence entre 0,8 cN et 2 cN.
  6. Fil selon l'une quelconque des revendications 1-5, caractérisé en ce que le second composant de fil (3) comprend des filaments (4, 4a, 4b) dont les filaments individuels présentent un titre valant entre 0,4 dtex et 1,4 dtex, de préférence un titre des filaments individuels situé entre 0,5 dtex et 0,7 dtex.
  7. Fil selon l'une quelconque des revendications 1-6, caractérisé en ce que le premier composant de fil (2) présente une résistance spécifique valant entre 40 cN/ tex et 270 cN/tex, et en particulier entre 60 cN/tex et 120 cN/tex.
  8. Fil selon l'une quelconque des revendications 1-7, caractérisé en ce que le premier composant de fil (2) présente des filaments (5) dont les filaments individuels présentent un titre valant entre 0,4 dtex et 5 dtex, de préférence entre 0,8 dtex et 4 dtex.
  9. Fil selon l'une quelconque des revendications 1-8, caractérisé en ce que le premier composant de fil (2) présente au moins un fil multifilaments présentant un nombre de fibres élémentaires valant entre 16 et 300, et en particulier entre 24 et 96.
  10. Fil selon l'une quelconque des revendications 1-9, caractérisé en ce que le second composant de fil (3) comprend au moins un fil multifilaments présentant un nombre de fibres élémentaires valant entre 20 et 400, en particulier entre 36 et 120.
  11. Fil selon l'une quelconque des revendications 1-10, caractérisé en ce que le premier composant de fil (2) comprend des fibres à plusieurs filaments de haute résistance, en particulier des fibres de polyester, des fibres de polyamide, des fibres de carbone, des fibres d'aramide, des fibres de polyéthylène et/ou des fibres de polypropylène.
  12. Fil selon la revendication 11, caractérisé en ce que la fibre de polyéthylène à haute résistance est une fibre de polyéthylène filée à partir d'un gel.
  13. Fil-selon l'une quelconque des revendications 1-12, caractérisée en ce que le second composant de fil (3) est une fibre de polyester, une fibre de polyamide 6 ou une fibre de polyamide 6.6.
  14. Fil selon l'une quelconque des revendications 1-13, caractérisé en ce que le premier composant de fil (2) et le second composant de fil (3) sont constitués de multifilaments de polyester.
  15. Fil selon l'une quelconque des revendications 1-14, caractérisé en ce que le rapport des masses du premier composant de fil (2) et du second composant de fil (3) varie entre environ 90:10 et environ 50:50, de préférence entre environ 80:20 et environ 60:40.
  16. Fil selon l'une quelconque des revendications 1-15, caractérisé en ce que le fil (1) filé présente un titre total valant entre 50 dtex et 500 dtex, de préférence entre 80 dtex et 300 dtex.
  17. Procédé de fabrication d'un fil (1), en particulier un fil à coudre selon l'une quelconque des revendications 1-16, dans lequel on tourbillonne l'un avec l'autre le premier composant de fil (2) et le second composant de fil (3) par l'intermédiaire d'un écoulement de fluide, en particulier un écoulement de gaz, et dans lequel on sélectionne comme second composant de fil (3) un matériau de fil dont la résistance spécifique des filaments individuels vaut entre 5% et 70%, en particulier entre 10% et 50% de la résistance spécifique des filaments individuels du premier composant de fil, caractérisé en ce que l'on effectue le tourbillonnage de telle sorte que, vu dans la coupe transversale du fil (1) filé, le second composant de fil (3) occupe une surface (F₂) qui vaut deux à trente fois, en particulier cinq à quinze fois, la superficie (F₁) qu'occupe le premier composant de fil.
  18. Procédé selon la revendication 17, caractérisé en ce que l'on utilise comme second composant de fil (3) un fil multifilaments dont, vus dans la direction axiale, les filaments (4, 4a, 4b) présentent des parties (8) dans lesquelles la résistance spécifique des filaments individuels vaut entre 5% et 70%, en particulier entre 10% et 50% de la résistance spécifique des filaments individuels du premier composant de fil (2).
  19. Procédé selon la revendication 17 ou 18, caractérisé en ce qu'avant le tourbillonnage, on étire le second composant de fil (3) irrégulièrement suivant sa longueur.
  20. Procédé selon la revendication 19, caractérisé en ce que l'on étire moins les filaments individuels (4, 4a, 4b) du second composant de fil (3) dans les parties (8).
  21. Procédé selon la revendication 20, caractérisé en ce que dans les parties (8), on étire le second composant de fil (3) à un rapport d'étirage qui est situé entre 30% et 90% en dessous du rapport d'étirage du reste du fil.
  22. Procédé selon la revendication 17 ou 18, caractérisé en ce que l'on traite thermiquement des parties des filaments individuels (4, 4a, 4b) du second composant de fil (3).
  23. Procédé selon la revendication 22, caractérisé en ce que l'on effectue le traitement thermique avant le tourbillonnage.
  24. Procédé selon la revendication 17 ou 18, caractérisé en ce que l'on attaque chimiquement des parties des filaments individuels (4, 4a, 4b) du second composant de fil (3).
  25. Procédé selon la revendication 24, caractérisé en ce que l'on effectue une hydrolyse sur des parties.
  26. Procédé selon la revendication 25, caractérisé en ce que l'on applique par partie un acide ou une lessive alcaline sur les filaments individuels (4, 4a, 4b) du second composant de fil (3), à une concentration valant entre 1% et 10% du poids total du second composant de fil (3).
  27. Procédé selon la revendication 26, caractérisé en ce que l'on effectue le traitement thermique après l'application de l'acide ou de la lessive alcaline.
  28. Procédé selon la revendication 27, caractérisé en ce que l'on exécute le traitement thermique à une température située entre 140°C et 250°C, de préférence entre 170°C et 200°C.
  29. Procédé selon la revendication 27 ou 28, caractérisé en ce que l'on exécute le traitement thermique pendant entre 0,2 secondes et 20 secondes, en particulier entre 2 secondes et 5 secondes.
  30. Procédé selon l'une quelconque des revendications 24 à 29, caractérisé en ce que l'on effectue l'attaque chimique sur le fil (1) tourbillonné.
  31. Procédé selon l'une quelconque des revendications 22 à 29, caractérisé en ce que l'on exécute le traitement thermique ou chimique avant le tourbillonnage des deux composants de fil (2, 3), et en ce que l'on étire le second composant de fil (3) avant le traitement thermique ou chimique.
  32. Procédé selon l'une quelconque des revendications 17 à 31, caractérisé en ce que l'on utilise comme second composant de fil (3) un fil multifilaments dont le titre des filaments individuels vaut entre 0,4 dtex et 1,4 dtex, de préférence entre 0,5 dtex et 0,7 dtex.
EP91111734A 1990-08-17 1991-07-15 Un fil, en particulier un fil à coudre, et procédé pour la réalisation d'un fil Expired - Lifetime EP0472873B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE4026069 1990-08-17
DE4026069 1990-08-17
DE4036798 1990-11-19
DE4036798 1990-11-19
DE4121638 1991-06-29
DE4121638A DE4121638C2 (de) 1990-08-17 1991-06-29 Garn, insbesondere naehgarn, sowie verfahren zur herstellung eines derartigen garnes

Publications (2)

Publication Number Publication Date
EP0472873A1 EP0472873A1 (fr) 1992-03-04
EP0472873B1 true EP0472873B1 (fr) 1996-05-01

Family

ID=27201576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91111734A Expired - Lifetime EP0472873B1 (fr) 1990-08-17 1991-07-15 Un fil, en particulier un fil à coudre, et procédé pour la réalisation d'un fil

Country Status (9)

Country Link
US (1) US5429868A (fr)
EP (1) EP0472873B1 (fr)
AT (1) ATE137538T1 (fr)
BR (1) BR9103535A (fr)
DE (2) DE4121638C2 (fr)
DK (1) DK0472873T3 (fr)
ES (1) ES2087182T3 (fr)
HK (1) HK184596A (fr)
MX (1) MX9100723A (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215016A1 (de) * 1992-05-12 1993-11-18 Amann & Soehne Hochfestes Nähgarn sowie Verfahren zur Herstellung eines derartigen Nähgarnes
DE4215212A1 (de) * 1992-05-12 1993-11-18 Amann & Soehne Coregarn sowie Verfahren zur Herstellung eines Coregarnes
EP0586951B1 (fr) * 1992-08-26 1999-10-06 Hoechst Aktiengesellschaft Fil à deux composants bouclé de titre fin et à haute résistance, procédé de sa production et l'utilisation comme fil à coudre et fil à broder
DE4324610A1 (de) * 1992-12-18 1994-06-23 Amann & Soehne Nähgarn aus Synthese- und/oder Naturfasern
DE4401512A1 (de) * 1994-01-20 1995-07-27 Hoechst Ag Zweikomponenten-Schlingengarne, Verfahren zu deren Herstellung und deren Verwendung als Nähgarne und Stickgarne
DE4443456A1 (de) * 1994-12-07 1996-07-04 Hoechst Trevira Gmbh & Co Kg Zweikomponenten-Schlingengarne aus Aramidfilamenten, Verfahren zu deren Herstellung und deren Verwendung
ATE199946T1 (de) * 1994-12-16 2001-04-15 Hoechst Trevira Gmbh & Co Kg Hybridgarn und daraus hergestelltes schrumpffähiges und geschrumpftes, permanent verformbares textilmaterial, seine herstellung und verwendung
AR010847A1 (es) * 1997-01-20 2000-07-12 Rhone Poulenc Filtec Ag TEJIDO TÉCNICO EN PARTICULAR, PARA BOLSAS DE AIRE, Y METODO PARA LA FABRICACIoN DEL HILO DE FILAMENTO PARA EL TEJIDO.
DE19911757A1 (de) * 1999-03-16 2000-09-21 Amann & Soehne Nähgarn sowie Verfahren zur Herstellung eines Nähgarnes
DE10124162A1 (de) * 2001-05-17 2002-11-21 Guetermann Ag Lufttexturierter Faden sowie Verfahren zu dessen Herstellung
DE10124161A1 (de) * 2001-05-17 2002-11-21 Guetermann Ag Lufttexturierter Faden sowie Verfahren und dessen Herstellung
DE10124165A1 (de) * 2001-05-17 2002-11-21 Guetermann Ag Verwendung eines lufttexturierten Fadens
KR100328341B1 (en) * 2001-11-12 2002-03-13 Silver Star Corp Highly water-absorbing conjugate yarn prepared by special yarn processing technique and woven or knit fabric using the same
DE10221170A1 (de) * 2002-05-13 2003-11-27 Guetermann Ag Verwendung eines mechanisch texturierten Fadens
DE10221169A1 (de) * 2002-05-13 2003-11-27 Guetermann Ag Mechanisch texturierter Faden sowie Verfahren zu dessen Herstellung
US20040194444A1 (en) * 2003-04-04 2004-10-07 Vinod Yashavant Vinayak Fluoropolymer yarn blends
PL1479802T3 (pl) * 2003-05-05 2016-06-30 Amann & Soehne Gmbh & Co Kg Nić do szycia oraz sposób wytwarzania tego typu nici do szycia
US7243744B2 (en) * 2003-12-02 2007-07-17 Smith International, Inc. Randomly-oriented composite constructions
DE102011116936A1 (de) * 2010-11-29 2012-05-31 Amann & Söhne GmbH & Co. KG Garn, insbesondere Näh- oder Stickgarn sowie Verfahren zur Herstellung eines derartigen Garnes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3811263A (en) * 1972-02-23 1974-05-21 Phillips Petroleum Co Non-twisted, heather yarn and method for producing same
CA1107162A (fr) * 1978-01-27 1981-08-18 Masayuki Tani Fil texturise similifile, et methode de fabrication connexe
US4226079A (en) * 1978-05-04 1980-10-07 Du Pont Canada Inc. Heather yarn made by combining polyester and polyamide yarns
US4248036A (en) * 1979-03-08 1981-02-03 E. I. Du Pont De Nemours And Company Bulky yarn
ZA82486B (en) * 1981-02-04 1982-12-29 Coats Ltd J & P Synthetic yarn and yarn-like structures and a method and apparatus for their production
DE3140030A1 (de) * 1981-10-08 1983-04-21 Stahlecker, Fritz, 7347 Bad Überkingen Vorgarn aus einem faserband und wenigstens einem filamentfaden
US4615167A (en) * 1985-01-04 1986-10-07 Greenberg Neville G Highly entangled thread development
DE3720237A1 (de) * 1987-06-15 1989-01-05 Amann & Soehne Verfahren zum herstellen von luftblastexturiertem naehgarn
JPS6452841A (en) * 1987-08-19 1989-02-28 Toyo Boseki Filament composite sewing yarn
DE3844615A1 (de) * 1988-09-17 1990-03-22 Amann & Soehne Garn, insbesondere naehgarn
DE3834139A1 (de) * 1988-10-07 1990-04-19 Hoechst Ag Zweikomponenten-schlingennaehgarn und verfahren zu seiner herstellung

Also Published As

Publication number Publication date
DK0472873T3 (da) 1996-06-10
DE4121638A1 (de) 1992-02-20
EP0472873A1 (fr) 1992-03-04
DE59107751D1 (de) 1996-06-05
BR9103535A (pt) 1992-05-12
US5429868A (en) 1995-07-04
DE4121638C2 (de) 1993-11-04
HK184596A (en) 1996-10-11
ES2087182T3 (es) 1996-07-16
MX9100723A (es) 1992-04-01
ATE137538T1 (de) 1996-05-15

Similar Documents

Publication Publication Date Title
EP0472873B1 (fr) Un fil, en particulier un fil à coudre, et procédé pour la réalisation d'un fil
CH574768A (fr)
CH650933A5 (de) Chirurgischer naehfaden.
DE2758823C2 (de) Vorrichtung zum Spinnen eines Fasergarns
DE3603952C2 (fr)
DE2942131C2 (fr)
DE3030971C2 (fr)
EP0367938B1 (fr) Procédé de fabrication d'un fil, en particulier un fil à condre, et fil ainsi obtenu
EP0206098B1 (fr) Procédé de fabrication d'étoffes déformables
DE2907535A1 (de) Wie-gesponnenes multifilamentgarn
DE3248396A1 (de) Stapelfasergarne durch verflechtung
DE2110670C3 (de) Vorrichtung zum kontinuierlichen Kräuseln von thermoplastischen Fäden
DE3011763A1 (de) Spinnverfahren zum erzeugen von vielfachverbundfasern
DE3844615A1 (de) Garn, insbesondere naehgarn
DE3014006C2 (de) Gekräuseltes Filamentgarn
DE2839856C2 (fr)
DE2432440A1 (de) Fuelliges garn und verfahren zu seiner herstellung
DE4215212A1 (de) Coregarn sowie Verfahren zur Herstellung eines Coregarnes
EP1036866B1 (fr) Fil à coudre et procédé pour la production d'un tel fil à coudre
DE2313474C3 (de) Verfahren zum Herstellen von Filamentgarn mit abstehenden Filamentenden
DE3148175C2 (fr)
DE4035908C2 (de) Garn, insbesondere Nähgarn, sowie Verfahren zur Herstellung eines derartigen Garnes
DE10124162A1 (de) Lufttexturierter Faden sowie Verfahren zu dessen Herstellung
DE2313473A1 (de) Verfahren zum herstellen von filamentgarn mit filamentenden
DE2530728A1 (de) Voluminoeses garn und verfahren zu dessen herstellung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19920307

17Q First examination report despatched

Effective date: 19930930

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960501

REF Corresponds to:

Ref document number: 137538

Country of ref document: AT

Date of ref document: 19960515

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: HEPP, WENGER & RYFFEL AG

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19960507

REF Corresponds to:

Ref document number: 59107751

Country of ref document: DE

Date of ref document: 19960605

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: BA2A

Ref document number: 2087182

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2087182

Country of ref document: ES

Kind code of ref document: T3

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19960801

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20100714

Year of fee payment: 20

Ref country code: NL

Payment date: 20100707

Year of fee payment: 20

Ref country code: ES

Payment date: 20100813

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20100712

Year of fee payment: 20

Ref country code: DE

Payment date: 20100731

Year of fee payment: 20

Ref country code: FR

Payment date: 20100805

Year of fee payment: 20

Ref country code: IT

Payment date: 20100722

Year of fee payment: 20

Ref country code: LU

Payment date: 20100716

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20100714

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20100712

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20100714

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59107751

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59107751

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20110715

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BE20 Be: patent expired

Owner name: *AMANN & SOHNE G.M.B.H. & CO.

Effective date: 20110715

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20110714

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110714

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110715

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20120110

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110716

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110716