EP1317577B1 - Fabric with oriented and selective antibacterial, antimicrobial or fungicide activity, method for making same and uses - Google Patents

Abstract

This invention consists of "orienting" the activity (or activities) of textiles, in particular their antimicrobial activity, as well as antistatic, antifungal, and similar useful functions, the "orientation" of the activity (or effect or functions, these terms being used here as being equivalent) of a textile, and especially of the antibacterial activity, of one side of the textile being carried out in relation to the other side. So-called two-sided fabrics are obtained one of the sides of which is characterized by biological activity (antibacterial, antimicrobial, anticarian insecticide, fungicidal, or generally antiparasitic), cosmetic, pharmaceutical, antistatic, antibacterial in controlled amounts, while the other side may be characterized by zero activity. In the preferred embodiment the technique known as satin weaving or serge weaving is applied in order to orient the fabric as claimed for the invention.

Description

Technical sector of the invention:

The present invention relates to the technical field of textiles, especially fabrics, having a special action or function, including an antimicrobial and antibacterial action (or function).

Prior art:

As part of the ongoing fight against nosocomial infections in hospitals, hygiene in industry, hospitality, transport or in the consumer sector, textiles are considered to be important potential reservoirs of bacteria and through vectors such as the manuportage, the transmission of germs.

• l'apprêtage ou l'ennoblissement, recouvrant l'intégralité de la structure du textile ou s'attachant plus particulièrement à certains types de fibres constituant le textile. Le coût de ce traitement est relativement faible.
• L'utilisation de fils, de fibres ou de filaments de toute nature, dans lequel on a incorporé des agents antibactériens diffusants.
  Ceux-ci pouvant être mélangés à d'autres matériaux puis transformés en fil puis en tissu ou en étoffe de toute nature.
  Le mode de fonctionnement antibactérien de ces deux technologies est de traiter l'intégralité de la structure du textile et de rendre celui-ci antibactérien par effet de diffusion des principes actifs sur les constituants non-antibactériens.

In order to fight against the bacteria present on the textile, there are today a certain number of techniques:

• finishing or finishing, covering the entire structure of the textile or focusing more particularly on certain types of fibers constituting the textile. The cost of this treatment is relatively low.
• The use of yarns, fibers or filaments of any kind, into which diffusing antibacterial agents have been incorporated.
  These can be mixed with other materials and then transformed into yarn and fabric or fabric of any kind.
  The antibacterial mode of operation of these two technologies is to treat the entire structure of the textile and make it antibacterial diffusion effect of the active ingredients on the non-antibacterial components.

We cite as general information on this type of subject the article " Antimicrobial Textiles", "For Science" No. 266, December 1999.

• imprégnation (on foularde, c'est-à-dire on trempe un tissu dans un apprêt)
• inclusion (l'élément est inclus dans le polymère avant filature et tissage)

Quelle que soit la technique, l'activité du tissu est la même sur les 2 faces, c'est-à-dire qu'elle n'est pas différenciée.In existing techniques, the tissues become active by treatment either by:

• impregnation (it is a scarf, that is to say one quenches a fabric in a primer)
• inclusion (the element is included in the polymer before spinning and weaving)

Whatever the technique, the activity of the tissue is the same on both sides, that is to say, it is not differentiated.

Related issues:

• Caractéristiques antibactériennes sur la totalité de la masse et sur toutes les faces du textile.
• Diffusion des agents antibactériens dans l'environnement par dégorgement (ex : surface de la peau).
• Dispersion lors de lavages, par la transpiration.
• Épuisement probable des agents antibactériens à plus ou moins long terme.
• Possibilité de favoriser des souches bactériennes résistantes à l'agent ou du fait de contact avec des doses de plus en plus faibles de par le dégorgement de créer des mutagénéités des bactéries (c'est déjà le cas, comme le souligne l'article précité).

By the method of treatment, the following undesirable effects and / or problems result:

• Antibacterial characteristics on the entire mass and on all sides of the textile.
• Diffusion of antibacterial agents into the environment by disgorging (ex: skin surface).
• Dispersion during washing, by perspiration.
• Probable depletion of antibacterial agents in the more or less long term.
• Possibility of favoring bacterial strains that are resistant to the agent or because of contact with lower and lower doses by disgorging to create mutagenicity of the bacteria (this is already the case, as underlined in the aforementioned article) .

• les personnes en contact régulier avec ces produits : patients, personnel soignant, opérateur en milieu à traiter.
• Les personnes exposées à un risque potentiel de surdosage (ou de création de résistances bactériennes liées à une exposition répétée).

(Sauf sur tissus enduits sur 1 face car 1 face peut être désactivée par masquage du tissu, par enduction ou contre-collage ou un tissu bicomposant = complexage de 2 tissus l'un sur l'autre, mais les tissus enduits ne font absolument pas partie de l'objet de la présente invention).It appears a serious problem for:

• people in regular contact with these products: patients, caregivers, operators in the area to be treated.
• People at risk of overdose (or creation of bacterial resistance due to repeated exposure).

(Except for fabrics coated on 1 side because 1 face can be deactivated by masking the fabric, by coating or against-bonding or a two-component fabric = complexing of 2 tissues one on the other, but the coated fabrics do not absolutely part of the object of the present invention).

It also appears the need not to destroy non-pathogenic flora so not to treat areas not affected by the infection.

Summary of the invention

In its most general aspect, the present invention consists in "orienting" the activity (or the activities) of the textiles, and in particular their antibacterial, but also antimicrobial, anti-fungal activity useful in the aforementioned fields, or which would become .

The "orientation" of the activity (or action, or function, these terms being here equivalent, as will be understood by those skilled in the art) of the textile, and in particular of the antibacterial activity, is carried out according to the invention of one side of the textile with respect to the other.

This results in so-called two-sided fabrics, one side of which will be antibacterial (or antimicrobial, anti-fungal,) at controlled dosage and the other side may be antibacterial activity (or antimicrobial, anti-fungal) .

The whole will be designated throughout the present application, including the claims, by "activity" or "function" or sometimes by simplification "anti-bacterial activity" or "antimicrobial activity" or "antifungal activity" but, in any case and unless specifically stated otherwise, such a term will cover all of the activities described above as well as those which will appear directly to the skilled person.

To achieve the orientation of the fabric according to the invention is used in the preferred embodiment the so-called SATIN weaving technique or SERGEY weaving.

• Tricotage : par 1 double-face / (par exemple : le jersey notamment le jersey vanisé)
• Tissage jacquard satin.

ainsi que toute technique, permettant de différencier un fil de trame par rapport à un fil de chaîne, ou l'inverse, comme cela sera décrit ci-dessous. Ces techniques sont bien connues de l'homme de métier.The following known techniques can also be used:

• Knitting: by 1 double-sided / (for example: jersey including jersey)
• Satin jacquard weave.

and any technique for differentiating a weft yarn from a warp yarn, or vice versa, as will be described below. These techniques are well known to those skilled in the art.

The invention therefore relates to textiles having an antibacterial, antimicrobial, fungicidal function or action, characterized in that said function is oriented along one side of the textile, with respect to the other side.

By "oriented" is meant here that one of the faces has said function and the other face is not, or that one of the faces has said function to a certain degree, for example normal or strong, and the other face to another degree, for example very low or zero, or that both sides have one or more functions, one of these faces combining several functions.

It should be noted a well-known cost override problem associated with SATIN and SERGE type weaving, which is slower than conventional warp and weft weaves, which may have dissuaded the skilled person from considering using this route.

In addition, there are several types of SATIN and SERGÉ weavings; and it was therefore not obvious either to choose the type of weaving, that is to say the selection of "active" weft threads, nor to evaluate the chances of success.

Detailed description of the invention

Attached FIG. 1, which consists of FIGS. 1A and 1B, is the comparative description of a normal weaving with respect to a weaving. satin or twill.

In a normal weaving process, FIG. 1A, each wire (of chain CH and respectively of frame TR) is alternately in front of and behind the plane of FIG.

In a satin or twill type weaving process, FIG. 1B, the CH chain material is offset on one side (in the figure, "in front") and the weft material TR is offset on the other side (on the figure, "behind"), or vice versa.

So we get a front or top and a back or bottom.

The present invention consists, in its general aspect, to design a textile characterized in that the two faces do not have the same function and / or not the same degree of a certain function, to solve the problems mentioned above.

In a particular aspect, the invention consists of a textile whose two faces do not have the same function and / or not the same degree of a certain function.

In another particular aspect, the invention consists of a textile whose two faces do not have the same function and / or not the same degree of a certain function, and which has been obtained by a "satin" type manufacturing process. ".

According to the invention, the textile is characterized in that it consists of weft yarns and warp yarns not having the same function, and / or not the same degree of a certain function, woven, for example, according to the so-called "satin weaving" process.

According to another embodiment of the invention, the warp yarn is inactive and the weft yarn has antibacterial, antimicrobial, fungicidal activity.

According to another embodiment of the invention, the weft yarn is inactive and the warp yarn has antibacterial, antimicrobial activity, fungicide.

According to another embodiment of the invention, the warp yarn has an activity A1 and the weft yarn has a second activity A2.

According to one variant of the invention, the warp thread has an activity A1 to a certain degree D1 and the weft thread has the same activity A1 at a degree D2.

Alternatively, D1 is a normal degree of activity and D2 is a very low degree.

According to another variant, A1 is an antibacterial or antifungal activity.

• activités antifongique, antibactérienne, antimicrobienne

The following activities and combinations of activities are particularly preferred, but not limited to:

• antifungal, antibacterial, antimicrobial activities

As already indicated, it will be noted that, according to the invention, the action on the 2 faces can be either: 1 identical, but to different degrees, 2 complementary, 3 different (ie 2 active faces, each with a different activity or the same activity but to different degrees), 1 active and 1 non-active).

This technology is original because the fabric is oriented, that is to say it is very active on one side (easy to identify because, as the SATIN provides for example, it shines) and little active on the other, for at least one specific activity. If we reverse the activity of the warp and weft threads, the matte side will be active.

It is therefore possible to position a tissue with an active face in contact with the patient, for example a sheet under the patient, if the infection is under the patient, and to position the top sheet with its inactive face facing the patient. .

• un côté actif orienté vers l'endroit à traiter (plaie, cicatrice, foyer, infection, ou extérieur du corps d'où vient l'agression).
• côté inactif orienté vers les zones à préserver (à ne pas soumettre à une action, par exemple antibactérienne, superfétatoire).

avec les nuances possibles et combinaisons possibles indiquées ci-dessus.The fabric comprises, according to one embodiment, two faces:

• an active side oriented towards the place to be treated (wound, scar, focus, infection, or outside of the body from which the aggression comes).
• inactive side oriented towards areas to preserve (not to submit to an action, for example antibacterial, superfluous).

with the possible nuances and possible combinations indicated above.

Applications of the invention:

• Vêtements et tissus hospitaliers (destinés au personnel, aux malades ...) et autres (tentures, vêtements en milieu à risque ; industrie agro-alimentaire et pharmaceutique ; laboratoires d'analyse, chambres stériles y compris dans l'industrie, chambres blanches, armée, grand public, vêtement de sport, de chasse (action anti-odeurs), industries productrices d'odeurs, vêtements et articles de sport ou d'extérieur dits « outdoor », vêtement anti-salissures (garagistes, ouvriers BTP, industries chimiques, cuisinier), vêtements d'image (hôtesses, serveurs, ...) et analogues), articles de literie, tissus d'ameublement (pour les maisons, les véhicules...)

ainsi que tout tissu de protection pouvant recouvrir en totalité ou en partie une personne, un outil ou un matériel (par exemple chirurgical), un accessoire d'habillement, chaussures etc.... (par exemple protection anti-salissure, ou hydrophobe, etc....), pour protéger un matériel sensible (électronique, armes, etc....)
(avec possibilité de combiner avec une activité secondaire par exemple déodorante ou parfumante, dévolue par exemple au fil de chaîne)The activities and combinations of activities as mentioned above (for example devolved to the weft thread) are:

• Hospital clothing and fabrics (for staff, patients, etc.) and others (draperies, clothing in risky environments, food and pharmaceutical industry, analysis laboratories, sterile chambers, including in industry, clean rooms, army, general public, sportswear, hunting (anti-odor action), odor producing industries, outdoor and outdoor sports clothing and articles, anti-fouling clothing (garage owners, construction workers, chemical industries) , cook), image clothing (hostesses, waiters, ...) and similar), bedding, upholstery (for houses, vehicles ...)

as well as any protective fabric that can cover in whole or in part a person, a tool or a material (for example surgical), a clothing accessory, shoes etc ... (eg anti-fouling protection, or hydrophobic, etc ....), to protect a sensitive material (electronics, weapons, etc ....)
(With the possibility of combining with a secondary activity, for example deodorant or perfuming, devolving for example on the warp)

• la figure 1, qui se compose des figures 1A et 1B, représente comme indiqué ci-dessus la description comparative d'un tissage normal par rapport à un tissage satin ou Sergé.
• la figure 2, qui se compose des figures 2A et 2B, représente la visualisation des armures en effet chaîne en technique SATIN
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 2 A : Effet chaîne Satin 4
  (côté inactif)
  Figure 2B : Effet chaîne Satin 5
  (côté inactif)
• la figure 3, qui se compose des figures 3A et 3B, représente la visualisation des armures en effet trame en technique SATIN
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 3 A : Effet trame Satin 4
  (côté actif)
  Produit le plus intéressant (rapport qualité antibact./solidité)
  Figure 3B : Effet trame Satin 5
  (côté actif)
  Excellente qualité antibactérienne, mais plus fragile
• la figure 4, qui se compose des figures 4A et 4B, représente la visualisation des armures en effet chaîne en technique SATIN
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 4 A : Effet chaîne Satin 6
  (côté inactif)
  Figure 4B : Effet chaîne Satin 8
  (côté inactif)
• la figure 5, qui se compose des figures 5A et 5B, représente la visualisation des armures en effet trame en technique SATIN
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 5 A : Effet trame Satin 6
  (côté actif )
  Figure 5B : Effet trame Satin 8
  (côté actif)
• la figure 6, qui se compose des figures 6A et 6B, représente la visualisation des armures en effet chaîne en technique SERGÉ
  (On utilisera ici de préférence un sergé de 2/1 ou 3/1 pour avoir un maximum de fils de trame sur une face par rapport à l'autre)
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 6 A : Effet chaîne Sergé 2 / 1
  (côté inactif )
  Figure 6B : Effet chaîne Sergé 3 / 1
  (côté inactif)
• la figure 7, qui se compose des figures 7A et 7B, représente la visualisation des armures en effet trame en technique SERGÉ
  (On utilisera ici de préférence un sergé de 2/1 ou 3/1 pour avoir un maximum de fils de trame sur une face par rapport à l'autre)
  Les "X" représentent les fils de chaîne et les carrés blancs les fils de trame.
  Figure 7 A : Effet trame Sergé 2 / 1
  (côté actif)
  Figure 7B : Effet trame Sergé 3 / 1
  (côté actif)

Other characteristics and advantages of the invention will be better understood on reading the description which follows, and with reference to the appended drawing in which:

• FIG. 1, which consists of FIGS. 1A and 1B, represents, as indicated above, the comparative description of a normal weave with respect to a satin or twill weave.
• FIG. 2, which consists of FIGS. 2A and 2B, shows the visualization of the warp armor in SATIN technique.
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 2 A: Satin Chain Effect 4
  (inactive side)
  Figure 2B: Satin Chain Effect 5
  (inactive side)
• FIG. 3, which consists of FIGS. 3A and 3B, shows the visualization of the weaves in raster effect in SATIN technique.
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 3 A: Satin Weft Effect 4
  (active side)
  Most interesting product (quality report antibact./solidité)
  Figure 3B: Satin Weft Effect 5
  (active side)
  Excellent antibacterial quality, but more fragile
• FIG. 4, which consists of FIGS. 4A and 4B, shows the visualization of the warp armor in SATIN technique.
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 4 A: Satin Chain Effect 6
  (inactive side)
  Figure 4B: Satin Chain Effect 8
  (inactive side)
• FIG. 5, which consists of FIGS. 5A and 5B, shows the visualization of the weave effect weaves in SATIN technique.
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 5 A: Satin Weft Effect 6
  (active side)
  Figure 5B: Satin Weft Effect 8
  (active side)
• FIG. 6, which consists of FIGS. 6A and 6B, shows the visualization of the warp armors in SERGE technique .
  (We will use here preferably a twill of 2/1 or 3/1 to have a maximum of weft son on one side compared to the other)
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 6 A: Chain Effect Twill 2/1
  (inactive side)
  Figure 6B: Twill Chain Effect 3/1
  (inactive side)
• FIG. 7, which consists of FIGS. 7A and 7B, shows the visualization of the weaves in raster effect in SERGE technique .
  (We will use here preferably a twill of 2/1 or 3/1 to have a maximum of weft son on one side compared to the other)
  The "X" represent the warp threads and the white squares the weft threads.
  Figure 7 A: Twill Weft Effect 2/1
  (active side)
  Figure 7B: Twill 3/1 Weft Effect
  (active side)

Most interesting product in its quality report antibact./solidité.

EXAMPLES Exact construction of the fabric :

The warp may be made of 100% cotton or 100% polyester or polyester / cotton blend, filaments or fibers, or other materials (polyamide, acrylic, ...).

Materials choice :

The choice of materials (fibers or filaments) containing the antibacterial or antimicrobial agents will be based on a criterion of non-diffusion of the active agents of the environment, therefore of antibacterial or antimicrobial action strictly in contact with the fibers.

Choice of construction techniques:

The choice of textile construction techniques will be guided by the point above.

For this purpose, the so-called satin weaving technique, or twill weaving, is used in the preferred embodiment.
The choice of these techniques resulting from the possibility of bringing a maximum of fibers on one side compared to the other depending on the use that we want to make the textile (clothing, bags, protective covers, curtains, ...).

Technique in particular : Definition of weft:

In order to be able to bring a maximum of antibacterial or antimicrobial agents on one of the faces, we decided to use antibacterial or antimicrobial agents in the weft thread, by making mixtures of active threads or filaments with fibers or filaments inactive evenly dosed, according to the desired efficacy criteria.

Choice of the SATIN technique :

We can use according to the criteria of resistance, comfort or dosage, a satin of 4 or 5 (especially for resistors). See Figure 1A - 1B and 1A 'and 1A ".
+ or - resistant

Other techniques used to make double-sided fabrics: laminating, coating, ... are more expensive or change the characteristics of the fabric (flexibility, washability, hold, comfort).

The weft yarn will be constructed according to the performance requirements related to the final product using the fabric. This may consist of yarns, fibers or filaments based on cotton, polyester, blends or other fibers or other pure or mixed materials.

The qualities of the textile may be related to the nature of the fibers or filaments constituting the yarn, but also result from an ennobling treatment that can be performed on a yarn consisting of materials, which by their nature do not have properties specific.

Ex: an antibacterial fiber included in a thread composed of a comfort fiber type Coolmax ^™ .

The weaving techniques will provide maximum antibacterial or antimicrobial efficacy on one of the chosen faces, so-called "active" face. The effectiveness on it may vary from weakly bacteriostatic or microbiostatic to very highly bactericidal or microbicidal, depending on the end use requested.

Regarding the other side, the weaving techniques will allow an activity varying in the same proportions, namely from zero to highly active.
The tissues will, therefore, be active on one side, or double activity.

Regarding the other side, the weaving techniques will for example a quasi or non-bacteriological or other activity. The activity of this other face will be weakly bacteriostatic (or other activity) to zero.

The weaving techniques used may be those used for the construction of fabrics usually used in their context of use.
These constructions may be of different kinds: weaving, knitting, nonwoven or any other technique for the superposition or construction of a double-sided textile material.

Usage ranges:

• increase or decrease in the number of warp or weft threads,
• different SATIN mounting. (The satin weave 4 is preferably chosen to be the strongest, the satin weave 5 to be most effective, compared to the less preferred satin weaves 6 and 8).
• Different SERGE assembly (satin weave 2/1 and 3/1 are chosen for their strength and efficiency).

Choice of fiber or active filament :

A polymer having an active agent intimately mixed into the entire mass of the fiber or filament (and acting, in the case of anti-bacterials) by an effect of a weft and / or warp yarn is used. ion exchange or any similar technology.
Each wire being composed of several fibers or filaments.
All these fibers are deemed to be non-diffusing of their active agent by disgorging in their environment.
In addition, the effectiveness has been proven throughout the physical life of the product, washable at all temperatures, non-toxic.

Active Agents:

These agents are known, each in their field of activity, by the skilled person.

Reference will be made to the aforementioned article FOR SCIENCE, No. 266, December 1999, page 134 ff, "Antimicrobial Textiles", F. Renaud and J. Freney.

A large family of anti-bacterial or anti-fungal products used in the fibers consists of zeolites, well-known compounds which are alumino-silicates linked to silver and copper or silver and zinc ions, the latter ions having an antiseptic action by blocking thiol groups of proteins, mineral ceramics, animal, amides or any other agent known to have a non-diffusing action in its environment by disgorging.

Other agents can be found in the attached single table.

Intensity :

The intensity of the effectiveness depends on several criteria known to those skilled in the art (see article above and single table attached). <b> TEXTILES "HEALTH FOR BEDDING"</b> 2 - ANTIACARIAN TEXTILES 1-ANTIBACTERIAL TEXTILES Classification Operating mode / definition Advantages disadvantages Classification Operating mode / definition Advantages disadvantages Antifungals: "Hungry" mites. (1 ^st generation) Principle : The antifungal molecule will break the food chain of the mite and starve it. The mite dies of hunger after 3 to 6 weeks. • Very low cost Molecule often photolabile (destroyed in the light) and water-soluble (dissolves in the water so disappears immediately with the washing). primers Deposit on a textile of a more or less complex mixture of active molecules (method: impregnation, padding). • Cheap • In situ activity very short term (low fixation). Use : The molecule is prepared in primer which is deposited on the textile by padding. • No known toxicity. Example: Sanitized ® (phenoxyhalogen derivatives + isothiazolinone). • Bad washing behavior. EG: Sanitized ® ® Actigard 1 ^st generation • Light antibacterial effect before washing or prolonged use. • Dry cleaning recommended • Release (the molecules unhook and diffuse). Pyrethrum extracts: non-permanent anti-mites. ( ^2nd generation) Principle : Pyrethrum extracts are naturally (chrysanthemum, geranium) anti-mite and anti-insect (at higher dose). They kill the mites. • Improved durability (compared to 1 °), • Instability to light (photolable). Inclusions with diffusion Integration into a polymer of an active molecule but which may have a release (even limited diffusion), • Use of an excellent non-toxic and active molecule (Triclosan). • Diffusing product (release to be controlled) = pejorative aspect (not eligible for the XPG 99-010 standard). Examples: Utllisation : Deposited in primer. • Low cost. • Slow effect (after 3 weeks during which the mite can migrate to find food elsewhere). • Rhovyl AS ® (active principle: Triclosan integrated in chlorofibre), • Washable at 60 ° • High cost related to marketing support. Ex: Microstop® Actigard® Sinacaria® (the latter is combined with Teflon®), • No intrinsic allergenic effect (is not allergenic by itself). • Washability (relatively low 5 washes at 40 ° max). • Hollofil Allerban ® (active principle: Triclosan embedded in acrylic, all mixed with 9 volumes of polyester). • Development possibilities (fiber lining, yarn, fabric ...). • Can be combined with antifungal. • Microsafe ® (Irgasan). • Marketing support. Stabilized derivatives of permethrin: resistant anti-mites. (3 ^rd generation) Principle: Permethrin, the world's first anti-insect molecule (in textile products) also kills mites, with a lower useful dose. Use: Deposited as a primer, sometimes combined with other molecules. • Perennial antarctic. • Price slightly higher. Inclusions without diffusion. Integration in a polymer of a non-diffusing active molecule. • Use of non-toxic active zeolites very well fixed (non-diffusing). • High cost. Examples: Ex: Acaristop ® • No known toxicity. • Bactekiller ®, Backtistop ®. No-Bacte® (active principle: zeolites, releasing active oxygen O ₂ , integrated in polyester). • Washable at 60 ° (95 ° for some applications). • SME marketing. • Sometimes combined with an antifungal (slightly antibacterial, see 1 °) and a textile protector ("anti-stain" to avoid the formation of tasks that can act as "guard room" for the mite). • Bactistop ® Filling New non-diffusing and washable anti-bacterial lining fiber • Development opportunities. • Washable at 60 ° (according to current formulation with progress to be expected) 10 times. • Scientific support "In vivo". • Photostable. • Quick activity: 48 hours.

Claims (26)

1. Textiles exhibiting at least one antibacterial, antimicrobial, fungicidal function or action "oriented" according to one face of the textile relative to the other face, that is to say one of the faces exhibits at least said function to a certain degree and the other face exhibits it to a different degree,
   characterised in that to produce said orientation of function or action there is used any textile production technique that allows a weft yarn to be differentiated with respect to a warp yarn, each yarn being composed of a plurality of fibres or filaments, there is used as the weft and/or warp yarn a polymer loaded with an active agent mixed intimately into the totality of the mass of the fibre or filament, the weft yarn and the warp yarn not exhibiting the same function and/or not exhibiting the same degree of a particular function, and the warp and weft yarns are woven according to said technique to give one face composed mostly of weft yarns and the other composed mostly of warp yarns.
2. Textiles according to claim 1, characterised in that there is used a technique selected from:

   - SATIN weaving

   - TWILL weaving

   - knitting.
3. Textiles according to claim 1, characterised in that there is used a technique selected from:

   - knitting: by one double face (for example jersey, especially plaited jersey)

   - jacquard satin weaving.
4. Textiles according to any one of claims 1 to 3, characterised in that at least one of the faces exhibits a plurality of functions.
5. Textiles or woven fabrics according to any one of claims 1 to 4, characterised in that they are two-faced, one of the faces exhibiting an activity selected from the following: antibacterial, antimicrobial, antifungal, in a controlled dosage, and the other face exhibiting an activity selected from the following: antibacterial, antimicrobial, antifungal, zero.
6. Textiles according to any one of claims 1 to 5, characterised in that one face exhibits an antibacterial action combined with a perspiration-removing action, and the other face exhibits no activity.
7. Textiles according to any one of claims 1 to 6, characterised in that the warp material CH is displaced from one side ("front") and the weft material TR is displaced from the other side ("back"), or vice versa.
8. Textiles according to any one of claims 1 to 7, characterised in that the two faces do not exhibit the same activity.
9. Textiles according to any one of claims 1 to 7, characterised in that the two faces do not exhibit the same degree of a particular activity.
10. Textiles according to any one of claims 1 to 9, characterised in that they consist of weft yarns and warp yarns that do not exhibit the same activity.
11. Textiles according to any one of claims 1 to 9, characterised in that they consist of weft yarns and warp yarns that do not exhibit the same degree of a particular activity.
12. Textiles according to any one of claims 1 to 11, characterised in that they are woven according to the so-called "satin weaving" or "serge weaving" process.
13. Textiles according to any one of claims 1 to 12, characterised in that the warp yarn is inactive and the weft yarn exhibits said activity.
14. Textiles according to any one of claims 1 to 12, characterised in that the weft yarn is inactive and the warp yarn exhibits said activity.
15. Textiles according to any one of claims 1 to 14, characterised in that the warp yarn exhibits one of said activities A1 and the weft yarn exhibits another of said activities A2.
16. Textiles according to any one of claims 1 to 14, characterised in that the warp yarn exhibits one of said activities A1 to a certain degree D1 and the weft yarn exhibits the same activity A1 to a degree D2.
17. Textiles according to claim 16, characterised in that D1 is a normal degree of activity and D2 is a very low degree.
18. Textiles according to claim 15 or 16, characterised in that the activities A1 and A2 are selected from:

    • antifungal, antibacterial, antimicrobial activities.
19. Textiles according to any one of claims 1 to 18, characterised in that they have two faces:

    • an active side oriented towards the site to be treated (wound, scar, seat, infection, or exterior of the body from which the attack comes)

    • an inactive side oriented towards areas that are to be preserved (that are not to be subjected to an action, for example antibacterial, superfetatory action).
20. Textiles according to any one of claims 1 to 19, characterised in that they are obtained with:

    satin 4 warp effect
    (inactive side) or

    satin 5 warp effect
    (inactive side) or

    satin 4 weft effect
    (active side) or

    satin 5 weft effect
    (active side) or

    satin 6 warp effect
    (inactive side) or

    satin 8 warp effect
    (inactive side) or

    satin 6 weft effect
    (active side) or

    satin 8 weft effect
    (active side) or

    serge 2/1 warp effect
    (inactive side) or

    serge 3/1 warp effect
    (inactive side) or

    serge 2/1 weft effect
    (active side) or

    serge 3/1 weft effect
    (active side).
21. Textiles according to any one of claims 1 to 20, characterised in that the warp yarn may be constituted by 100% cotton or 100% polyester or polyester/cotton mixture, filaments or fibres, or of other materials (polyamide, acrylic).
22. Textiles according to any one of claims 1 to 21, characterised in that the choice of materials (fibres or filaments) containing the antibacterial or antimicrobial agents is made on the basis of a criterion of non-diffusion of the active agents into the environment, therefore of antibacterial or antimicrobial or other action strictly on contact with the fibres.
23. Textiles according to any one of claims 1 to 22, characterised in that the active agent is selected from, as antibacterial or antifungal agent, zeolites, which are aluminosilicates bonded to silver and copper or silver and zinc ions, mineral and animal ceramics, amides.
24. Process for the production of a "two-faced" textile or woven fabric according to any one of claims 1 to 23, characterised in that it uses a technique selected from:

    - the so-called SATIN weaving technique, especially satin 4, satin 5, satin 6 or satin 8,

    - the so-called SERGE weaving technique, especially 2/1 or 3/1,

    - knitting: by one double-face (for example jersey, especially plaited jersey),

    - jacquard satin weaving

    as well as any technique allowing a weft yarn to be differentiated with respect to a warp yarn, or vice versa.
25. Uses of the woven fabrics and textiles according to any one of claims 1 to 23 and of the process according to claim 24 in:

    hospital clothing and woven fabrics (drapes, clothing for a high-risk environment; agri-food and

    pharmaceuticals industry; analytical laboratories, sterile rooms including those in industry, white rooms, army, general public, sportswear, clothing for hunting, odour-producing industries, clothing and articles for sports or so-called "outdoor" clothing or articles, dirt-resistant clothing for garage mechanics, BTP [building and public works] workers, chemical industries, cooks, uniforms for hostesses, waiters, bedding, furnishing fabrics for houses, vehicles,

    as well as in any protective woven fabric which is able to cover all or part of a person, a tool or a piece of equipment, a clothing accessory, shoes, for protecting sensitive equipment.
26. Equipment, apparatus, clothing, characterised in that it is covered by a textile according to any one of claims 1 to 23.

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