EP1727927B1 - Procede d'enduction d'un fil - Google Patents

Procede d'enduction d'un fil Download PDF

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Publication number
EP1727927B1
EP1727927B1 EP05716016A EP05716016A EP1727927B1 EP 1727927 B1 EP1727927 B1 EP 1727927B1 EP 05716016 A EP05716016 A EP 05716016A EP 05716016 A EP05716016 A EP 05716016A EP 1727927 B1 EP1727927 B1 EP 1727927B1
Authority
EP
European Patent Office
Prior art keywords
yarn
coating
process according
dispersion
yarns
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.)
Not-in-force
Application number
EP05716016A
Other languages
German (de)
English (en)
Other versions
EP1727927A1 (fr
Inventor
Freddy Marinus Johannes Tijink
Henricus Hubertus Wilhelmus Feijen
Ronald Stiefelhagen
Christian Vieth
Johannes Petrus Maria Dortmans
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.)
Diolen Industrial Fibers BV
Original Assignee
Diolen Industrial Fibers BV
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 Diolen Industrial Fibers BV filed Critical Diolen Industrial Fibers BV
Priority to EP05716016A priority Critical patent/EP1727927B1/fr
Publication of EP1727927A1 publication Critical patent/EP1727927A1/fr
Application granted granted Critical
Publication of EP1727927B1 publication Critical patent/EP1727927B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/40—Yarns in which fibres are united by adhesives; Impregnated yarns or threads
    • D02G3/404—Yarns or threads coated with polymeric solutions
    • 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
    • Y10T428/2933—Coated or with bond, impregnation or core

Definitions

  • the present invention is directed to a process for coating a yarn comprising the steps of first contacting the yarn with a dispersion of the coating agent in a dispersing agent or with the coating agent in molten form, optionally re-dispersing excess dispersion or melt from the yarn is stripped, and then the coating is formed on the yarn, which is done in the case of dispersion by at least partial removal of the dispersant by means of heating, and then the yarn thus coated is cooled and wound up.
  • Such a method is known.
  • US-A-3,407,092 a coated yarn obtained by passing a yarn of nylon through a bath of an emulsion containing an acrylate-based copolymer in an aqueous emulsion and then drying at about 93 ° C for two minutes. This yarn is then cooled and twisted.
  • the application of coating agent is in the yarns of US 3,407,092 about 1 to 10 wt .-%.
  • the coating or coating of fabrics such as fabrics, knits, paper and nonwovens is also known.
  • this type of coating is understood to mean the application of a film-like coating of natural or synthetic materials, as a coating material, to the fabric or the carrier web the purpose of making them suitable for special requirements or to give them new properties, eg for artificial leather, coverings, tarpaulins, etc.
  • the fabric in the first Line is responsible for the mechanical strength of the final product, while the applied coating, the behavior of the material in use against external influences, such as breathability, kink and scratch resistance, light radiation, chemical resistance, flame retardancy, water, heat, as well as the appearance, such as printing , Coloring, graining, and the particular usability.
  • the coating is painted as a uniformly thick layer by means of so-called doctor blade on the carrier web.
  • the thickness of the coating depends on the particular application and can be both fractions of a millimeter and several millimeters. Such an order form is known per se to those skilled in the art and need not be further elaborated here.
  • a good adhesion of the coating on the carrier web is often guaranteed only when first a primer is applied with a very small amount of the coating. After the intermediate drying, the proportionately larger layer is applied and, if necessary, even a third so-called final layer, also called finishing coat, applied - the latter especially to ensure the scratch resistance.
  • the process of coating fabrics can thus consist of several stages, in the course of which relatively large application quantities of coating agents are often used.
  • the production step of the fabric itself that is, for example, the production of fabric fabrics from yarns, etc.
  • coated yarns could be processed directly into coated fabrics that are still subject to heat and / or pressure, e.g. by hot pressing, lead to a uniform and permanent coating of the tissue.
  • the known methods for coating yarns still have disadvantages that limit their applications.
  • the amount of coating applied to the yarns is often too low to serve as an equivalent replacement for the subsequent subsequent coating of the fabrics.
  • the order quantity in the US 3,407,092 is too low with 1 to 10 wt .-%.
  • the yarns obtained by direct coating often have too little uniformity both in the amount of coating and in the shape of the coated yarns thus obtained. It is often not uniformly round or flattened yarns obtained that are difficult, eg on looms, further processable. Naturally, this problem is more pronounced when it comes to high application rates of coating agents.
  • speed is to be understood as the length of yarn which comes into contact with the coating agent within a unit of time.
  • yarns are obtained which not only have a high and uniform application of coating, but are also very well suited for further processing in terms of their uniform round shape.
  • Yarns made of multifilaments behave after the coating according to the invention then similar to monofilaments, which, for example, has a very advantageous effect on their flow behavior.
  • the yarn which is still relatively hot due to the formation of the coating by means of heat or by the contact with the coating agent in molten form, is therefore additionally cooled in addition to cooling by ambient air, with a water-cooled tangeldoil having proven particularly suitable for this purpose.
  • dispersion means a fine distribution of a substance in another substance.
  • the degree of dispersion may range from coarsely disperse systems having an average particle size of> 10 -6 m over colloidally disperse systems having an average particle size of between 10 -6 m and 10 -9 m up to the molecular disperse systems (particle size ⁇ 10 -10 m).
  • liquid dispersants and solid or liquid disperse constituents are used in the context of this invention. Such dispersions are known to the person skilled in the art as emulsion or sol
  • the process according to the invention is particularly advantageously suitable as part of a stretching or spinning stretching process in the course of which it can be incorporated.
  • it is proposed to supply the heat required in the case of removal of the dispersing agent during the relaxation step which is required anyway in the drawing process. This results in a simple and advantageous manner for setting the desired coating and the desired yarn properties.
  • the contacting of the yarn with the dispersion or the coating agent takes place in molten form by passing the yarn through the dispersion or the melt.
  • the dispersion of the coating composition or the coating agent is in molten form within a container through which the yarn is passed, for example by means of rollers.
  • the yarn can be guided by a scraper, for example in the form of a round opening whose diameter is adjustable.
  • a scraper as an adjustable "aperture" can be scrapped amount of dispersion or coating agent set in molten form in a very simple but effective way.
  • the particular advantage of this type of coating agent application is that even yarns can be obtained which absorb only relatively small amounts of coating agent.
  • melt or the dispersion with the coating agent can also be applied by per se conventional and known preparation devices, for example by spraying, or by means of application rollers ("kiss-rolls").
  • the yarns to be coated can also run through the coating agent in a single-twisted manner, for example as adjacent multifilaments.
  • the treatment of untwisted yarns is even desirable because after forming fabrics, such as fabrics, from these untwisted coated yarns, very dense and closed sheets can be obtained by the use of pressure and temperature. Due to the relatively broader surface contiguousness of the individual filaments in untwisted yarn compared to the twisted yarn, there is a greater broadening in the tissue. This results in a very excellent fabric finish, which can be used well for a number of applications. Moreover, the fabric thus obtained is also relatively thin relative to fabrics obtained from coated and twisted yarns.
  • the yarns in the form of monofilaments are subjected to the coating process according to the present invention.
  • the coating of the individual filaments with the coating agent leads to the formation of a core-shell structure in the manner of (much more complicated) bicomponent spinning, wherein the coating agent forms the shell component.
  • the shell components melt and a practically closed covering is formed around the core components formed by the filaments. Structures obtained in this way are characterized by the absence of the unwanted wicking effect.
  • the inventive method is well suited for the production of so-called "low-wick” - or preferably "no-wick” yarns.
  • the yarns to be coated are advantageously yarns of thermoplastic polymers, such as polyamide, polyester or polyolefin, and blends or copolymers thereof.
  • thermoplastics for the claimed method lies in the fact that it can be conveniently integrated into typical melt spinning processes with connected or downstream stretching devices.
  • Particularly preferred - due to their frequent use in coated fabrics - are those yarns which consist essentially of polyethylene terephthalate.
  • the coating is carried out continuously at speeds of the yarn between 50 and 1000 m / min.
  • Suitable coating agents are in principle all materials which can be melted and / or dispersed. In the context of the present invention, however, it is particularly preferred if the coating agent is a polymer selected from the group consisting of silicone, polyurethane, polyolefin, polyacrylate, polyvinyl compounds and copolymers and blends thereof.
  • coating agents consisting essentially of polyvinyl chloride.
  • the dispersant it is desirable, especially from the environmental and cost point of view, if it is water.
  • the process according to the invention makes it possible to apply coating amounts of from 1 to 800% by weight, preferably from 10 to 500% by weight, more preferably from 50 to 400% by weight, to the yarns in a readily adjustable amount and reproducibly and uniformly to obtain.
  • the present invention is further directed to coated yarns obtainable by the process of the present invention, as well as to fabrics such as fabrics or nonwovens containing such coated yarns.
  • the present invention is also directed to coated yarns or fabrics obtainable therefrom, which are obtainable by the process according to the invention in which the coating composition is chosen so that there is an increased transparency of the coated yarn or sheet thus obtained.
  • PET polyethylene terephthalate
  • Materials made up of semi-crystalline polymers such as polyethylene terephthalate (PET) are inherently transparent because their morphology is made up of crystals which are much smaller than the wavelength of visible light.
  • PET bottles made of semi-crystalline PET are transparent.
  • the semi-crystalline polymers are in the form of yarns or filaments, these yarns behave like large lenses due to their very small diameter and the difference in refractive indices between the air and the yarn. This strong refraction of light is the reason why a yarn bundle is opaque.
  • the yarn is coated with a coating agent which has a refractive index which is very close to the refractive index of the yarn to be coated.
  • the refractive index of the coating agent as measured at the sodium D wavelength, differs by not more than 0.01, more preferably not more than 0.001, from the refractive index of the yarn.
  • Suitable coating compositions for yarns based on polyethylene terephthalate are, for example, PVC, polyurethanes, polydimethylsiloxanes, but also polystyrenes and silicones or mixtures of the polymers mentioned.
  • Birefringence refers to the phenomenon that the speed of propagation and thus the refractive index of a material depends on the direction of vibration of the incident light.
  • the birefringence is based on the fact that the (oriented) molecules or the molecular lattice of the material in question in different directions have different polarizabilities.
  • circularly polarized natural light which can be regarded as the superposition of two beams linearly polarized perpendicular to one another, is split into two separate beams when refracted in the material decomposed with different refractive index. Birefringence occurs in all crystals that do not belong to the regular system, and is therefore a measure of the molecular orientation, for example, in stretched polymers.
  • the idea is to first determine the refractive indices of the two mutually perpendicular linearly polarized beams, to determine therefrom an isotropic refractive index for the material, and then to correlate this isotropic refractive index thus found with that of the coating agent, as described above.
  • the refractive indices of the two perpendicular beams are 1.73 and 1.55 at the sodium wavelength. This results in an isotropic index for the yarn of 1.61, which in turn gives a refractive index for the coating agent in the range of 1.60 to 1.62.

Landscapes

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

Claims (14)

  1. Procédé de revêtement d'un fil, comprenant les étapes dans lesquelles le fil est d'abord mis en contact avec une dispersion de l'agent de revêtement dans un agent de dispersion, la dispersion en excès est le cas échéant enlevée du fil, et ensuite le revêtement est formé sur le fil, où celui-ci se produit par élimination au moins partielle de l'agent de dispersion par chauffage, et le fil ainsi revêtu est refroidi et enroulé, caractérisé en ce que le fil revêtu subit un refroidissement supplémentaire avant l'enroulement.
  2. Procédé selon la revendication 1, caractérisé en ce que le refroidissement supplémentaire est réalisé à l'aide d'une tuyère refroidie à l'eau.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le fil fait partie d'un processus d'étirage ou de filage-étirage et le chauffage pour l'élimination de l'agent de dispersion est réalisé pendant l'étape de relaxation.
  4. Procédé selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que la mise en contact du fil avec la dispersion est réalisée par le passage du fil dans la dispersion.
  5. Procédé selon la revendication 4, caractérisé en ce que la dispersion de l'agent de revêtement se produit dans un récipient, par lequel le fil est passé par exemple, avec des rouleaux.
  6. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 5, caractérisé en ce que le fil consiste en des fils de polymère thermoplastique, comme un polyamide, un polyester ou une polyoléfine, ainsi que des mélanges ou copolymères de ceux-ci.
  7. Procédé selon la revendication 6, caractérisé en ce que le fil consiste en des fils constitués essentiellement de poly(téréphtalate d'éthylène).
  8. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 7, caractérisé en ce que le revêtement est réalisé en continu, à des vitesses allant de 50 à 1000 m/minute.
  9. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 8, caractérisé en ce que l'agent de revêtement consiste en un polymère, qui est choisi parmi le groupe contenant les composés silicone, polyuréthanne, polyoléfine, polyacrylate, polyvinyle, ainsi que les copolymères et mélanges.
  10. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 9, caractérisé en ce que l'agent de revêtement consiste en le poly(chlorure de vinyle).
  11. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 10, caractérisé en ce que l'agent de dispersion consiste en de l'eau.
  12. Procédé selon l'une ou plusieurs des revendications précédentes 1 à 11, caractérisé en ce que les fils à revêtir sont des fils non retors.
  13. Fil revêtu, obtenu selon une ou plusieurs des revendications précédentes 1 à 12, caractérisé en ce que l'indice de réfraction de l'agent de revêtement, mesuré pour la longueur d'onde D du sodium, ne s'écarte pas de plus de 0,01, de préférence pas plus de 0,001, de l'indice de réfraction isotrope du fil, où l'indice de réfraction isotrope correspond à la valeur moyenne de l'indice de réfraction des deux rayons polarisés linéaires, qui se forment lors de la réfraction de la lumière naturelle polarisée de manière circulaire, dans le fil.
  14. Textile en nappe, comme un tissu ou un voile, contenant un fil revêtu selon une ou plusieurs des revendications précédentes 1 à 13.
EP05716016A 2004-03-18 2005-03-12 Procede d'enduction d'un fil Not-in-force EP1727927B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05716016A EP1727927B1 (fr) 2004-03-18 2005-03-12 Procede d'enduction d'un fil

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP04006473 2004-03-18
EP05716016A EP1727927B1 (fr) 2004-03-18 2005-03-12 Procede d'enduction d'un fil
PCT/EP2005/002668 WO2005093142A1 (fr) 2004-03-18 2005-03-12 Procede d'enduction d'un fil

Publications (2)

Publication Number Publication Date
EP1727927A1 EP1727927A1 (fr) 2006-12-06
EP1727927B1 true EP1727927B1 (fr) 2008-06-18

Family

ID=34924513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05716016A Not-in-force EP1727927B1 (fr) 2004-03-18 2005-03-12 Procede d'enduction d'un fil

Country Status (5)

Country Link
US (1) US7803431B2 (fr)
EP (1) EP1727927B1 (fr)
AT (1) ATE398693T1 (fr)
DE (1) DE502005004453D1 (fr)
WO (1) WO2005093142A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120148822A1 (en) * 2010-12-09 2012-06-14 Shih-Ming Lin Curtain fabric
US10688775B2 (en) 2015-04-16 2020-06-23 Response Technologies, Llc Method of manufacturing containment bladders
US11745391B2 (en) 2015-04-16 2023-09-05 Response Technologies, Llc Method of manufacturing complex-shaped, flexible, and reusable tanks
KR102001619B1 (ko) * 2019-01-31 2019-07-18 김용건 고강력사 제조방법 및 이에 의해 제조된 고강력사

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3407092A (en) * 1965-04-06 1968-10-22 Du Pont Coated tire cord yarn
FR2105086A1 (en) 1970-09-16 1972-04-28 Champier Ets Drawing or relaxings synthetic filament - during passage through heated chamber
US4197345A (en) * 1978-09-05 1980-04-08 Engineered Yarns, Inc. Fabric having multiple solid colored stripes
US5165993A (en) * 1983-07-04 1992-11-24 Akzo N.V. Aromatic polyamide yarn impregnated with lubricating particles, a process for the manufacture of such a yarn, and packing material or rope containing this yarn
DE3465353D1 (en) 1983-07-04 1987-09-17 Akzo Nv Aromatic polyamide yarn impregnated with lubricating particles, a process for the manufacture of such a yarn, and packing material or rope containing this yarn
DE4002109A1 (de) 1990-01-25 1990-08-23 Dominik Baumueller Transparentes gewebe
DE59101250D1 (de) * 1990-02-15 1994-05-05 Barmag Barmer Maschf Verfahren zur Herstellung eines lufttexturierten Fadens.
US5625976A (en) 1994-05-31 1997-05-06 Flow Tek, Inc. Fly lines
US5573850A (en) * 1995-03-24 1996-11-12 Alliedsignal Inc. Abrasion resistant quasi monofilament and sheathing composition
DE19850026A1 (de) 1998-10-30 2000-05-04 Freundes Und Foerderkreis Des Verfahren und Vorrichtung zur Herstellung texturierter Garne aus thermoplastischen Polymeren
US6682816B1 (en) * 2002-07-30 2004-01-27 Yao I Fabric Co., Ltd. Fishing line and method for making the same

Also Published As

Publication number Publication date
EP1727927A1 (fr) 2006-12-06
ATE398693T1 (de) 2008-07-15
US20070196651A1 (en) 2007-08-23
US7803431B2 (en) 2010-09-28
DE502005004453D1 (de) 2008-07-31
WO2005093142A1 (fr) 2005-10-06

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