COLORING A TEXTILE PRODUCT USING PIGMENTS FROM A SPORTS FIELD, AND IN PARTICULAR A TENNIS COURT

Abstract

The present invention relates to a colored textile product, characterized in that it is dyed with a coloring composition comprising as pigment(s) one or more materials originating from a sports field and / or used for coloring said sports field. The present invention also relates to a method for manufacturing such a textile, as well as its use in producing a garment, an item of footwear, household linen or a textile for furnishing. No figure for the abstract

Description

Title of the invention: COLORING A TEXTILE PRODUCT USING PIGMENTS FROM A LAND SPORTS, AND IN PARTICULAR A TENNIS COURT Technical field of the invention

[0001] The present invention relates to a textile product colored using pigments from a sports field, and in particular from a tennis court. The present invention also relates to a method for manufacturing such a textile, as well as its use for producing a garment, an item of footwear, household linen or a textile for furnishing. Technical background

[0002] Athletes who play on sports fields, for example tennis players on tennis courts, or rugby players on rugby fields, are often required to come into contact with the ground of these fields, other than by the fact that they tread on this ground with their feet. For example, when tennis players catch the ball sent by their opponent, they may find themselves in unbalanced positions which may lead them to slip, skid or even fall during a match. In these cases, parts of their body other than their feet, in particular their torso or their legs, come into contact with the ground, which has the consequence of staining their clothes when they touch the ground.

[0003] In this context, the Applicant discovered, during washing tests on sports clothing stained by the ground of sports fields, that these stains resist a high washing temperature of 60 degrees Celsius (°C). From these tests, it developed a new process for dyeing textiles using natural (for example mineral) or synthetic pigments from sports fields. Indeed, major sporting events, such as tennis tournaments or football or rugby world cups, are events which generally bring together a very large number of spectators and to which the population is very attached. The public at these events very often wears clothing and accessories bearing the image of the sportsmen or the place where these competitions take place, which clothing is worn not only during the competition, but also outside, in everyday life.

[0004] Methods of dyeing textiles using natural pigments are certainly known to those skilled in the art.

[0005] Patent application JP2003129390 teaches in particular a method of dyeing textiles using pigments from the red clay soil of the island of Okinawa in Japan. This patent application JP2003129390 discloses in particular a dyeing process of red clothing, using red earth from a specific geographical location.

[0006] But this patent application does not teach how to dye a textile in such a way as to obtain the exact coloration of the red earth selected on the textile thus dyed.

[0007] However, the Applicant has succeeded in reproducing the shade resulting from or substantially similar to those that sportsmen and women can get when their clothing rubs against the ground of sports grounds. To do this, the Applicant started from the observation that these stains are particularly resistant to washing, in particular at very high washing temperatures, higher in particular than those usually used for washing sports clothing by individuals (of the order of 70°C in this case), to implement a method of dyeing textiles which uses pigments specifically derived from the ground of sports grounds. Summary of the invention

[0008] For this purpose, the present invention relates to a colored textile product, characterized in that it is dyed with a coloring composition comprising as pigment(s) one or more materials originating from a sports field and / or used for coloring this sports field.

[0009] The Applicant was faced with the challenge of developing a coloring composition for dyeing textiles, and in particular the textiles that it manufactures, based on pigments specifically derived from the local environment of a sporting event, which is sufficiently strong to pass its own quality specifications. In other words, this invention has made it possible to manufacture a colored / dyed textile product whose color has acceptable and sufficient fastness and durability for the marketing of this textile product, while taking into account the constraint that the colored pigments used to dye this textile product must be derived from the sporting event / local geographical location association.

[0010] The invention allows the public at a sporting event to have a textile tinted in a color that directly refers to the location of this event.

[0011] Preferably, the pigment(s) of the coloring composition may originate from a tennis court or are pigments used for coloring this tennis court.

[0012] In this context (relating to the search for a coloration similar to that of a tennis court), according to a first particularly advantageous embodiment of the present invention, the tennis court may be made of clay: in this case, the pigment(s) of the coloring composition may either come from a clay tennis court and / or be pigments used for the coloration of this clay tennis court.

[0013] In this first advantageous embodiment of the present invention, it will be possible in particular to use a coloring composition comprising as pigment(s) a powder of crushed clay bricks baked in an oven.

[0014] In this first advantageous embodiment of the present invention, the brick powder may have a particle size of between 200 μm and 300 μm, and preferably of the order of 250 μm.

[0015] This particular granulometry presents a notable advantage because it allows the industrial production of very large quantities of brick powder in a homogeneous manner.

[0016] Depending on the nature of the clay constituting the crushed bricks used as pigments (minerals) in the coloring composition, an ochre tint is obtained, oscillating between an orange-yellow and a dark red.

[0017] According to a specific example of the invention, the clay used is derived from red bricks from the north of France, which are particularly known for their very pronounced red hues. To make these bricks, the clay is baked in a kiln, which allows the oxides present in it to be revealed. It is then the defective bricks which are used and finely ground to make the clay which will be used on tennis courts.

[0018] The Applicant's aim was very specifically to preserve the original shade of the clay which actually covers the tennis courts, without deviating from it.

[0019] Thus, advantageously, hematite can be added to the coloring composition. This component makes it possible to preserve the original color of the clay of the selected tennis court, by simply reinforcing its tone, for an optimal visual result on the final dyed textile. Indeed, the finer the brick powder, and more generally the pigments, are ground, the lighter the final color of the textile based on these pigments will be. It is therefore generally necessary to enhance the color of the dyed textile, by adding hematite to the coloring composition, so that this color is as close as possible, and ideally equivalent, to the color of the clay of the selected court.

[0020] Examples include the tennis courts at the Roland-Garros, Monaco and Madrid tournaments.

[0021] The Applicant uses clay that comes directly from the clay manufacturer for the courts of the selected tournament. It can also use clay that has already been used to manufacture the courts, and which has therefore been walked on by the athletes.

[0022] Advantageously, the brick powder and hematite are introduced into the coloring composition via a mixture consisting of 70% by weight of brick powder and 30% by weight of hematite.

[0023] According to a variant of the invention, the brick powder may comprise a blue pigment such as cobalt, so as to obtain a textile having a color similar to that of a blue clay tennis court.

[0024] According to a second embodiment of the present invention (also relating to the search for a coloring similar to that of a tennis court), the tennis court may be made of natural or synthetic grass, and the pigment(s) of the coloring composition may either come from a tennis court made of natural or synthetic grass and / or be pigments used for coloring this tennis court made of natural or synthetic grass, in particular green in color.

[0025] For example, we can cite the tennis courts at the Wimbledon tournament.

[0026] According to a third embodiment of the present invention (also relating to the search for a coloring similar to that of a tennis court), the tennis court may be a hard surface made of porous concrete, acrylic or resin, and the pigment(s) of the coloring composition may come either from the surface and / or be pigments used for coloring the surface, for example blue-colored pigments.

[0027] Examples include the tennis courts of the US Open and the Australian Open.

[0028] The present invention also relates to a method for manufacturing a colored textile product according to the invention, comprising the following steps: - introduction of a textile product to be colored into a hot water bath at a temperature of 70°C, the hot water bath further comprising as pigment(s) one or more materials originating from a sports field and / or used for coloring this sports field, for example iron oxides; - mixing the pigments and the textile product in a finished product dyeing machine, by stirring the drum of the finished product dyeing machine, for a period of between 6 hours and 9 hours, preferably between 7 hours and 8 hours, to obtain a wet colored textile product; - drying of the wet colored textile product.

[0029] The step of mixing the pigments (for example beaten earth and iron oxides) and the textiles in the water bath at 70°C, stirred by the drum of the dyeing machine, will allow the pigments to be deposited and pre-fixed by friction on the surface of the textile fibers.

[0030] The drying step allows the pigments pre-fixed to the surface of the textile fibers to then be completely fixed.

[0031] A plant softening step can be implemented at the end of the dyeing process, by applying aloe vera.

[0032] This textile dyeing process according to the invention has a positive impact on the environment, since the use of synthetic chemicals is reduced, compared to conventional textile dyeing processes. In addition, the discharges from this process according to the invention, in particular the water discharges, have been analyzed as being non-harmful.

[0033] The present invention also relates to the use of the colored textile product according to the invention, to produce a garment (for example of the polo shirt type), footwear, household linen or a textile for furnishing (for example of the hanging type, wall covering, seat cover, etc.) Detailed description of the invention

[0034] Other characteristics and advantages of the invention will appear during the reading of the detailed description for the understanding of which reference will be made to the following examples. EXAMPLES

[0035] Example 1: Preparation of a coloring composition according to the invention and dyeing of cotton textiles

[0036] Cotton textile products were dyed in accordance with the process according to the invention. A first phase of the process consisted of preparing the textiles. For this purpose, they were brought into contact with a first composition, described in Table 1 below:

[0037] [Tables 1] Ingredients Contents Water at 95°C 10 L / kg of textile Soap 1.5 g / L of water Carbonate 8 mL / L of water Acetic acid 0.7 g / L of water Mordant (Alum) 90 g / kg of textile

[0038] The soap of this composition is used to remove oils from the knitting process of textile products.

[0039] Carbonate is a wetting agent, that is to say it makes textiles hydrophilic.

[0040] The mordant allows it to adhere to the textiles like an undercoat, that is to say it covers the textiles before the dye is applied, to allow the dye pigments to fix optimally.

[0041] Then, a second phase of the process consisted of dyeing the prepared textiles. For this, these textiles were brought into contact with a second composition, which is a coloring composition, the composition of which is given in Table 2 below:

[0042] [Tables2] Ingredients Contents Water between 50°C and 70°C 10 L / kg of textile Red brick powder from the north of France, with a grain size of 250 pm, from the grounds of the Roland Garros tennis tournament 70 g / kg of textile Hematite 30 g / kg of textile

[0043] During this second dyeing phase, the following procedure was followed: - introduction of the textile products to be colored into a hot water bath whose composition is given in Table 1 and whose temperature is 70°C for cotton textiles, for scouring; - mixing of pigments and textile products in a finished product dyeing machine, by agitating the drum of this machine, to deposit the pigments on the cotton textiles by rubbing the textile fibers in an aqueous medium; - drying of wet colored textile products.

[0044] It will be appropriate to adapt the composition of this second coloring composition to dye textiles other than cotton, such as textiles made of wool, acrylic, polyester, polyamide, linen, hemp or acetate.

[0045] Tests were then carried out on the fastness of the colours obtained.

[0046] Example 2: Color fastness tests for dyed cotton textile products according to example 1

[0047] The procedures for each type of test and their results are described and presented in Examples 2a to 2e which follow.

[0048] Example 2a: tests of color fastness to domestic and industrial washing

[0049] Test conditions:

[0050] The tests in example 2a were carried out in accordance with standard NF EN ISO 105-C06 June 2010, and according to the ISO 105-C06 method.

[0051] Cotton textile products dyed according to example 1 were brought into contact, in an instrument with the trade name Linitest, which is an instrument comprising a container containing water which acts as a water bath, at a temperature of 40°C, with textiles of different natures, and which are the following:

[0052] - wool,

[0053] - acrylic,

[0054] - polyester,

[0055] - polyamide,

[0056] - cotton, and

[0057] - acetate.

[0058] The bleeding of the textiles dyed according to the invention and their degradation were analyzed.

[0059] Results:

[0060] The results are given in the following table 3:

[0061] [Tables3] Discoloration rating Degradation rating Textiles Requirements Results Requirement Result wool >4 5 >4 4-5 acrylic >4 5 polyester >4 5 polyamide >4 5 cotton >4 4-5 acetate >4 5

[0062] Example 2b: tests of color fastness to sweat

[0063] The tests in example 2b were carried out in accordance with standard NF EN ISO 105-E04 June 2013 and according to the ISO 105-E04 method.

[0064] Cotton textile products dyed according to example 1 were brought into contact, in an oven, with textiles of different natures, and which are the same as those of the preceding example 2a.

[0065] The bleeding of the textiles dyed according to the invention and their degradation were analyzed.

[0066] The results are given in the following table 4:

[0067] [Tables4] Discoloration rating Degradation rating Textiles Requirements Acid sweat results Basic sweat results Requirement Acid sweat results Basic sweat results wool > 3-4 5 5 >3-4 4-5 4-5 acrylic > 3-4 5 4-5 polyester > 3-4 5 5 polyamide > 3-4 5 5 cotton > 3-4 4-5 4-5 acetate > 3-4 5 5

[0068] Example 2c: Water-based color fastness tests

[0069] The tests in example 2c were carried out in accordance with standard NF EN ISO 105-E01 June 2013 and according to the ISO 105-E01 method.

[0070] The test conditions are the same as for the previous example 2b.

[0071] The results are given in the following table 5:

[0072] [Tables5] Discoloration rating Degradation rating Textiles Requirements Results Requirement Result wool >4 5 >4 4-5 acrylic >4 4-5 polyester >4 5 polyamide >4 5 cotton >4 4-5 acetate >4 5

[0073] Example 2d: tests of color fastness to rubbing

[0074] The tests in example 2d were carried out in accordance with standard NF EN ISO 105-X12 September 2016, and according to the ISO 105-X12 method.

[0075] Cotton textiles dyed according to the invention, respectively dry and wet, were placed on a crockmeter, which is an instrument for evaluating the resistance of colors to rubbing. A load of 9 Newton (N) + / - 0.2 N was applied, the diameter of the rubbing pin being 16 mm + / - 0.1 mm. The rubbings were carried out in the lengthwise and widthwise directions of the textiles.

[0076] The results are given in the following table 6:

[0077] [Tableauxô] Dry Wet Requirements >4 >3 Results 4 3

[0078] Example 2e: tests of color fastness to artificial light (xenon arc lamp)

[0079] The tests were carried out in accordance with standard NF EN ISO 105-B02 November 2014, and according to method ISO 105-B02, method no. 2.

[0080] Cotton textiles dyed according to the invention were placed in a machine with the trade name Xenotest Alpha.

[0081] The results are given in the following table 7:

[0082] [Tables?] Requirement >4 Degradation rating 7

[0083] All of the stain removal and degradation results of Examples 2a to 2e above illustrate that the textiles dyed according to the invention correspond to the expected requirements associated with them, which demonstrates their total conformity in terms of color fastness and durability. The textiles dyed according to the invention can therefore be used without the risk of their color lightening, and without the risk of transferring their color to other textiles with which they would be in contact.

Claims

Claims

1. Colored textile product, characterized in that it is dyed with a coloring composition comprising as pigment(s) one or more materials originating from a sports field and / or used for coloring said sports field.

2. A colored textile product according to claim 1, wherein said pigment(s) of the coloring composition originate from a tennis court and / or are pigments used for coloring said tennis court.

3. A colored textile product according to claim 2, wherein the tennis court is clay and said pigment(s) of the coloring composition originate from a clay tennis court and / or are pigments used for coloring said clay tennis court.

4. A colored textile product according to any one of claims 1 to 3, wherein said coloring composition comprises as pigment(s) a powder of crushed clay bricks baked in an oven.

5. A colored textile product according to claim 4, wherein said brick powder has a particle size of between 200 pm and 300 pm, and preferably of the order of 250 pm.

6. A colored textile product according to claim 4 or 5, wherein said coloring composition further comprises hematite.

7. A colored textile product according to claim 6, wherein said brick powder and said hematite are provided in said coloring composition via a mixture consisting of 70% by weight of brick powder and 30% by weight of hematite.

8. A colored textile product according to any one of claims 4 to 7, wherein said brick powder further comprises a blue pigment, such as cobalt.

9. A colored textile product according to claim 2, wherein the tennis court is made of natural or synthetic grass, and said pigment(s) of the coloring composition come from a natural or synthetic grass tennis court and / or are pigments used for coloring said natural or synthetic grass tennis court, in particular green in color.

10. A colored textile product according to claim 2, wherein the tennis court is a hard surface of porous concrete, acrylic, or in resin, and said pigment(s) of the coloring composition originate from said surface and / or are pigments used for coloring said surface, for example blue colored pigments.

11. Coloured textile product according to any one of claims 1 to 9, composed of natural and / or artificial fibres, preferably cotton.

12. A method of manufacturing a colored textile product as defined in any one of claims 1 to 9, comprising the following steps: - introducing a textile product to be colored into a hot water bath at a temperature of 70°C, said hot water bath further comprising as pigment(s) one or more materials originating from a sports field and / or used for coloring said sports field, for example iron oxides; - mixing said pigments and said textile product in a finished product dyeing machine, by stirring the drum of said finished product dyeing machine, for a period of between 6 hours and 9 hours, preferably between 7 hours and 8 hours, to obtain a wet colored textile product; - drying said wet colored textile product.

13. Use of said colored textile product as defined according to any one of claims 1 to 11, for producing a garment, an item of footwear, household linen or a textile for furnishing.