EP3953511B1 - Biokeramisches plüschgestrick und sein herstellungsverfahren - Google Patents

Biokeramisches plüschgestrick und sein herstellungsverfahren Download PDF

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Publication number
EP3953511B1
EP3953511B1 EP20717982.1A EP20717982A EP3953511B1 EP 3953511 B1 EP3953511 B1 EP 3953511B1 EP 20717982 A EP20717982 A EP 20717982A EP 3953511 B1 EP3953511 B1 EP 3953511B1
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EP
European Patent Office
Prior art keywords
fibres
fabric
bioceramic
special
artificial
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EP20717982.1A
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English (en)
French (fr)
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EP3953511A1 (de
Inventor
Fabrizio Cafissi
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Cafissi SpA
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Cafissi SpA
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B1/02—Pile fabrics or articles having similar surface features
    • D04B1/025—Pile fabrics or articles having similar surface features incorporating loose fibres, e.g. high-pile fabrics or artificial fur
    • 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
    • D10B2401/00—Physical properties
    • D10B2401/04—Heat-responsive characteristics
    • 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
    • D10B2501/00—Wearing apparel
    • D10B2501/02—Underwear

Definitions

  • the present invention belongs to the sector of textile industry, and specifically to the sector of special fabrics. More specifically, the present invention belongs to the sector of fabrics that comprise fibres including bioceramic particles.
  • the present invention belongs to the sector of pile fabrics wherein at least a part of fibres comprises bioceramic particles.
  • bioceramics are mineral mixtures, mainly oxide- and silicate-based mixtures, some beneficial properties of which are known which originate from the capability of bioceramic particles of reflecting far infrared radiations (FIR), i.e. radiations featuring a wavelength in the range from 4 micrometres (um) to 1mm (corresponding to a frequency range from about 300 GHz to about 20 THz) .
  • FIR far infrared radiations
  • WO2009124367A2 illustrates a woven fabric in whose fibres bioceramic microparticles are "imbedded".
  • This fabric is obtained by immersing a textile product in a thermal bath containing powdered bioceramics, so that such microparticles infiltrate the textile fibres, however without making up true physical or chemical bonds therewith.
  • a main disadvantage of such solution is in that a thus impregnated fabric very rapidly loses its own contents of bioceramic particles, both because of wear caused by rubbing and, above all, because of subsequent washings.
  • fabrics of such kind are not suitable for manufacturing articles of clothing to be worn not in direct contact with skin, such as for example overcoats and suits, but they are only effective if used to manufacture articles that adhere to human body, such as underwear.
  • polyester fibres that contain bioceramics generally feature a very small diameter, in the order of 1.5 ⁇ m, that is to say very much smaller than the diameter of normal textile fibres, which is in the order of 20um and fabrics obtained by weaving fibres of this kind consequently feature a low grammage, in general in a range from 70gr/sqmt to 100gr/sqmt, and consequently such fabrics shall necessarily adhere to human body and be in contact with skin in order for infrared radiations to provide a sufficiently high reflecting effect.
  • JP4531281B2 which, however, describes a fibre structure made of synthetic acrylic material.
  • the diameter of said acrylic fibers is necessarily much larger than the diameter of bioceramic fibres, due to the manufacturing technology of acrylic fibres themselves.
  • This type of processing makes it possible to obtain articles of clothing containing an amount of bioceramic particles that is much higher than the woven fabrics previously known in the art, and consequently the reflecting capability of FIR radiations in the thus obtained textile products is sufficiently high as to provide the desired beneficial effects, even if such fabric is not put in direct contact with body.
  • the fibres filled with bioceramic particles are to be woven with pure wool or pure virgin wool fibres before being fixed to the reticular support fabric. It is known that wool fibres are very delicate and that articles made from such material feature a number of disadvantages, including shrinkage upon being washed, easy deformability, and felting over time.
  • the support fabric features a reticular structure, i.e. it is made up of a set of weft and warp threads woven perpendicularly to each other: however, such weft and warp threads being woven with each other are not suitable for stably binding the thin loose pile fibres, which might easily detach from the support fabric, both during washing and afterwards, because of rubbing.
  • a pile knitted fabric made of wool and polyester fibres charged with bioceramic particles is disclosed in ES2576794A1 however no reference is made to the size of the fibres charged with the bio-ceramic particles.
  • the problem to be solved is realizing a fabric integrating bioceramic particles that is capable of maximizing the beneficial effects of reflection of FIR radiations, even if not put in direct contact with skin, and is lasting, lightweight, optimally wearable, easily washable and wear resistant, independently of the material that such fabric is made from, be it of natural, artificial, or synthetic origin.
  • woven fabric or “reticular fabric” we mean a fabric of a known type, obtained by orthogonally weaving two sets of threads, called weft and warp respectively.
  • knitted fabric will be used below to indicate a type of fabric, also known to those skilled in the art, consisting of superimposed lines of yarns, each of which follows a meander-like path, i.e. comprises a sequence of eyelet loops, where the eyelets of one line cross the inside of the eyelets of the line below.
  • the segments of through-passing yarns connecting two superimposed lines, arranged in such a way as to form a grid of "V"s one within the other are visible on the front side of a knitted fabric.
  • knitted pile weaving uses a knitted support fabric, from which thin loose fibres (“pile”) perpendicularly project to form an artificial fleece, which fibres are firmly bound to the support fabric, by passing through the eyelets of the stitches of the latter.
  • pile thin loose fibres
  • artificial fleece we mean a product that imitates the appearance of an animal fur and can be made up of synthetic, natural, or artificial fibres or a heterogeneous mixture of such fibres.
  • An object of the present invention is to overcome the drawbacks of fabrics formed of bioceramic fibres presently known and of textile products manufactured by using such fabrics, by providing a knitted pile fabric comprising a big amount of fibres of bioceramic particles and capable of maximizing emission and reflection of FIR radiations at the same wavelengths as those emitted by mammalian bodies, also thanks to the prevailing orientation of said fibres containing bioceramics.
  • an object of the present invention is to provide a fabric of the above-described type for manufacturing clothes capable of providing the beneficial effects given by the presence of bioceramics, even when such clothes are not in direct contact with skin, but are worn above other clothes.
  • Another object of the present invention is to provide a knitted pile fabric comprising bioceramic particles that is lasting, lightweight, provided with optimal wearability, easily washable and wear resistant, made from a material having a natural, artificial, or synthetic origin.
  • the knitted pile fabric according to the present invention comprises an artificial fleece formed of a heterogeneous mixture of fibres of a polymeric material in which bioceramic particles are incorporated, with a diameter of about 1.5 ⁇ m, and fibres of other materials, be they natural or artificial, with a greater diameter, such as, for example, wool, cotton, kapok, linen, tencel ® , polyester, etc.
  • the percentage of such polymeric fibres incorporating bioceramic particles ranges from 30% to 70% of the number of overall fibres making up the artificial fleece. Since such fleece consists of a very high number of very thin and lightweight fibres, the amount of bioceramic in the fabric is much higher than the typical amount of known woven fabrics.
  • such fibres of a polymeric material are obtained by making granules of a polymeric material, for example polyester, melt together with a powdered bioceramic material, so as to obtain, through an extrusion process, long filaments having a diameter of about 1.5 ⁇ m, consisting of a polymeric material containing bioceramic particles, which are texturized and cut into approx. 5cm long sections.
  • a polymeric material for example polyester
  • a powdered bioceramic material so as to obtain, through an extrusion process, long filaments having a diameter of about 1.5 ⁇ m, consisting of a polymeric material containing bioceramic particles, which are texturized and cut into approx. 5cm long sections.
  • Such heterogeneous mixture of thin bioceramic fibres and thicker natural or artificial fibres is processed in a carding machine, wherein it is made thinner and the fibres are partially rectified, so as to obtain a tubular carded strip having a diameter of about 2 to 3cm, commonly referred to as "tops".
  • a circular textile machine suitable for producing knitted pile fabrics and provided with a plurality of knitted thread feeding points, wherein the yarn is fed to the independent movable needles of the machine for creating a support fabric, and a plurality of tops feeding points, wherein the fibres, be they bioceramic or not, feed the mechanical members suitable for inserting them into the stiches of the support fabric, in order to obtain an artificial fleece.
  • Such circular textile machine basically exploits a technology that is known to those skilled in the art to obtain a knitted support fabric by binding thereto the loose approx. 5cm long fibres extracted from the tops.
  • specially developed mechanical members wind said fibres about the stiches of the support fabric, and make them project from the front side of such fabric.
  • the pieces of such fibres, projecting from the front side of the knitted fabric are cut to a predetermined length, often equal to 1.2cm, so as to equalize the thickness of the artificial fleece.
  • the thus obtained fabric can be cut, shaped, or further processed to obtain textile products of different types.
  • the high density of fibres of the fabric according to the present invention maximizes the reflecting/emitting effect of FIR radiations.
  • the fibres of the fleece containing bioceramic being mostly oriented in a direction orthogonal to the plane of the knitted fabric also contribute to increase the reflecting/emitting effect.
  • the fabric according to the present invention is very lightweight, warm, elastic, and comfortable to wear, besides being wear resistant and lasting.
  • the grammage of such fabric can be as high as about 700gr/sqmt, depending on the quality and quantity of fibres used: typically, the support fabric features a grammage of about 120-140gr/sqmt to which 150 to 500gr/sqmt of artificial fleece are to added.
  • the knitted support fabric is also comprised of fibres of a polymeric material incorporating bioceramic particles.
  • the scope of the present invention is a knitted pile fabric consisting of a knitted support fabric (1) and an artificial fleece (2) comprising fibres (4) and special fibres (3), the latter incorporating bioceramic particles.
  • the knitted support fabric (1) is either made up from natural, artificial, or synthetic fibres or a combination thereof.
  • Such artificial fleece (2) is made up from polymeric special fibres (3) incorporating bioceramic particles and other fibres (4), not incorporating bioceramic particles, which are either natural, artificial or synthetic or a combination of fibres of various natures.
  • said special fibres (3) have a diameter smaller than said fibre (4); meaning the diameter of said special fibres (3) is smaller than or equal to 3.0 um, more preferably smaller or equal to 1.5 ⁇ m, whereas the diameter of said fibres (4) is greater than or equal to 15 ⁇ m.
  • said artificial fleece (2) is formed of special fibres (3) in a maximum percentage of 70% of the total fibres making up the artificial fleece (2) itself.
  • the grammage of the knitted pile fabric according to the present invention can be as high as 700gr/sqmt.
  • the support fabric (1) has una grammage equal to 140gr/sqmt and the artificial fleece (2) has a grammage of 500gr/sqmt.
  • said support fabric (1) is also made up of yarns at least partially formed of fibres of a polymeric material incorporating bioceramic particles.
  • Another scope of the present invention is a textile product completely or partially implemented by using the above-described fabric by using techniques commonly known to those skilled in the art.
  • the method for implementing a fabric according to the present invention comprises the following steps:

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Of Fabric (AREA)
  • Materials For Medical Uses (AREA)

Claims (8)

  1. Ein Polgewirk, das ein Trägergewebe (1) umfasst, aus dem ein künstliches Vlies (2) herausragt, das Fasern (4) und Spezialfasern (3) umfasst, wobei letztere biokeramische Partikel enthalten, und wobei die Spezialfasern (3) einen kleineren Durchmesser als die Fasern (4) haben, dadurch gekennzeichnet, dass der Durchmesser der Spezialfasern (3) kleiner oder gleich 3,0 µm ist.
  2. Das Gewirk nach Anspruch 1, dadurch gekennzeichnet, dass der Durchmesser der Spezialfasern (3) kleiner als oder gleich 1,5 µm ist.
  3. Das Gewirk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Fasern (4) natürliche, künstliche oder synthetische Fasern oder eine Kombination aus verschiedenen der genannten Fasertypen sind.
  4. Das Gewirk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Spezialfasern (3) aus einem polymeren Material hergestellt sind, das biokeramische Partikel enthält.
  5. Das Gewirk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Anteil der Spezialfasern (3) zwischen 30 % und 70 % liegt, bezogen auf die Gesamtheit der Fasern, die das künstliche Vlies (2) bilden.
  6. Das Gewirk nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Trägergewebe (1) zumindest teilweise aus Garnen gebildet ist, die Fasern mit biokeramischen Partikeln enthalten.
  7. Ein Textilerzeugnis, dadurch gekennzeichnet, dass es zumindest teilweise unter Verwendung des Polgewirkes nach einem der vorhergehenden Ansprüche hergestellt ist.
  8. Ein Verfahren zur Herstellung eines gestrickten Flors gemäß einem der vorhergehenden Ansprüche 1 bis 6, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    a. Einbringen eines Pulvers aus einem biokeramischen Material in eine Vielzahl von Granulaten aus einem polymeren Material;
    b. Schmelzen eines solchen Granulats aus einem polymeren Material, das biokeramisches Pulver enthält, um eine Mischung aus Polymeren und biokeramischen Partikeln zu erhalten;
    c. Injizieren der Mischung in einen Extruder und Herstellung eines dünnen Fadens;
    d. Texturieren des dünnen Fadens und Schneiden in Abschnitte mit einer Länge von einigen Zentimetern, um so eine Vielzahl von Spezialfasern (3) zu erhalten;
    e. Mischen der Spezialfasern (3) mit Fasern (4), die keine Biokeramik enthalten, wobei die Spezialfasern (3) einen kleineren Durchmesser haben als die Faser (4), der kleiner oder gleich 3,0 µm ist;
    f. Einführen der heterogenen Mischung aus den Spezialfasern (3) und den Fasern (4) in eine Kardiermaschine und Herstellung einer Vielzahl von kardierten Streifen;
    g. Herstellung eines schlauchförmigen Polgewirks unter Verwendung einer Textilrundstrickmaschine, die mit einer Vielzahl von Garnen beschickt wird, um das Trägergewebe (1) herzustellen, und mit einer Vielzahl von kardierten Streifen, um das künstliche Vlies (2) zu produzieren;
    h. Rasieren und Glätten des künstlichen Vlieses (2).
EP20717982.1A 2019-04-12 2020-03-19 Biokeramisches plüschgestrick und sein herstellungsverfahren Active EP3953511B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102019000005680A IT201900005680A1 (it) 2019-04-12 2019-04-12 Tessuto bio-ceramico a pelo e metodo per la sua fabbricazione
PCT/IT2020/050066 WO2020208662A1 (en) 2019-04-12 2020-03-19 Bioceramic pile fabric and method for manufacturing it

Publications (2)

Publication Number Publication Date
EP3953511A1 EP3953511A1 (de) 2022-02-16
EP3953511B1 true EP3953511B1 (de) 2023-06-28

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ID=67262943

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Application Number Title Priority Date Filing Date
EP20717982.1A Active EP3953511B1 (de) 2019-04-12 2020-03-19 Biokeramisches plüschgestrick und sein herstellungsverfahren

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EP (1) EP3953511B1 (de)
IT (1) IT201900005680A1 (de)
WO (1) WO2020208662A1 (de)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2737702A (en) * 1951-07-27 1956-03-13 Borg George W Corp Artificial fur product and process of manufacture
JP4531281B2 (ja) * 2001-03-21 2010-08-25 株式会社カネカ 遠赤外線放射立毛状繊維構造物
BRPI0801857B1 (pt) 2008-04-07 2016-07-05 Mário Hirata aperfeiçoamentos introduzidos em produto têxtil
ES2576794B1 (es) * 2015-01-09 2017-03-24 CAFISSI S.p.A. Tejido de punto de pelo, mezcla de pura lana con fibras de poliéster cargadas con partículas de biocerámica
IT201600093856A1 (it) 2016-09-19 2018-03-19 Humanwellness Sa Tessuto cosmetico

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IT201900005680A1 (it) 2020-10-12
WO2020208662A1 (en) 2020-10-15
EP3953511A1 (de) 2022-02-16

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