JP2012515852A - Device comprising bamboo fibers and related manufacturing methods for applying cosmetics - Google Patents

Abstract

This device (10) includes a nonwoven fabric body (12) formed on the basis of fibers, and all the fibers forming the nonwoven fabric body are cellulose fibers. The fibers forming the nonwoven body include at least 20% by mass of bamboo fibers (14) based on the total mass of the fibers forming the nonwoven body (12).

Description

  The present invention relates to a device for applying cosmetics, comprising a nonwoven fabric body formed on the basis of fibers, and the fibers forming the nonwoven fabric body are all cellulose fibers.

  Such application devices can be used for impregnating cosmetics, for example wipes, woven webs, fabrics, patchers, discs or squares. It is intended to apply the product by bringing the soaked device into contact with the user's skin, nails or keratin fibers.

  In another form, the application device is disposed at one end of a grip body for grasping by the user's hand so that the cosmetic can be applied to the user.

  “Cosmetics” means, inter alia, products as specified in Directive 93/35 / EEC of the European Council of Ministers dated 14 June 1993. Cosmetics are, for example, makeup, makeup removing compositions for removing makeup applied to the user's skin or keratin fibers, nail enamel removers, or more generally creams or emulsions.

  WO2007 / 070147 discloses a wiping cloth provided with a nonwoven fabric body. The nonwoven fabric body of the wiping cloth is made, for example, based on a mixture of cellulose fibers formed on a sheet by a wet process similar to paper formation.

  To modify the properties of the wipe, synthetic fibers that are not derived from cellulose are added to the fiber mixture.

  Current environmental constraints mean that such types of wipes must be rapidly biodegraded to limit the amount of waste resulting from the increased use of such products.

WO2007 / 070147 CN1458306 FR2450293

  However, it is still necessary to maintain suitable properties for the wipe, especially with respect to its appearance, especially its gloss, and with respect to its use properties, especially its mechanical strength.

  Accordingly, an object of the present invention is to obtain a device for applying a cosmetic product, which is substantially biodegradable, but at the same time has an improved aesthetic appearance and high mechanical strength.

  To that end, the present invention relates to a device of the type described above, characterized in that the fibers forming the nonwoven body comprise at least 20% by weight of bamboo fibers relative to the total mass of fibers forming the nonwoven body.

The device according to the present invention may comprise one or more of the following features, obtained alone or in any technically possible combination:
-The fiber forming the nonwoven fabric body contains 38 mass% to 100 mass% bamboo fiber with respect to the total mass of the fibers forming the nonwoven fabric body,
-Bamboo with the fibers forming the nonwoven fabric body being 38% to 70% by weight, preferably 38% to 50% by weight, or 60% to 70% by weight, based on the total weight of the fibers forming the nonwoven fabric body Contains fibers or contains 80% to 100% by weight, preferably 92% to 100% by weight bamboo fiber,
The average length of bamboo fiber is more than 5mm, advantageously 10mm-60mm,
-The nonwoven fabric body is formed on the basis of a mixture of cellulose fibers including bamboo fibers and cellulose fibers other than bamboo,
The cellulose fibers other than bamboo are selected from viscose fibers, lyocell fibers and mixtures thereof;
The average length of cellulose fibers other than bamboo is 15 mm to 50 mm, preferably 30 mm to 50 mm,
・ The cellulose fibers in the nonwoven fabric are all bamboo fibers.
-The nonwoven fabric body is a sheet that deforms when touched.

The invention also provides a method of manufacturing a device as defined above,
Providing a cellulose fiber comprising at least 20% by weight bamboo fiber relative to the total mass of the cellulose fiber;
-Physically, chemically and / or mechanically bonding cellulose fibers to form a fiber-based nonwoven body, wherein the fibers forming the nonwoven body are all cellulose fibers;
It also relates to a method comprising:

  By reading the following description given purely by way of example and referring to the attached drawing (FIG. 1 is a top view of a wipe for applying cosmetics according to the present invention), the present invention Will be better understood.

1 is a diagram showing a first embodiment of an application device 10 according to the present invention.

  Such application devices are for forming wipes, woven fabrics, woven fabrics, patch fabrics, circular fabrics or square fabrics for impregnating cosmetics. It is intended to apply the product by contact with skin, keratin fibers or nails.

  In the embodiment shown in FIG. 1, the device 10 is a wiping cloth for applying cosmetics.

  The device 10 includes a non-woven body 12 made of a mixture of bamboo fibers 14 and cellulose fibers 16 other than bamboo.

  In another form, the nonwoven body 12 is formed exclusively from bamboo fibers.

  The body 12 is advantageously a sheet. In the context of the present invention, “sheet” means a body that is substantially flat, ie, at least twice as thin as the other dimensions, preferably at least 5 times thinner. The thickness of the body 12 is advantageously between 0.3 mm and 3 mm.

In the embodiment shown in FIG. 1, the body 12 is substantially rectangular. The maximum surface area of the body 12 is less than 1 m ² .

  The main body 12 is flexible so as to be deformed when touched. In the context of the present invention, “deforms when touched” means that the user of the application device 10 can deform the body 12 with his / her finger, in particular by pinching the application device between two fingers.

  The main body 12 is a non-woven fabric produced on the basis of a mixture of fibers 14 and fibers 16 which are all cellulose fibers.

  In the context of the present invention, a “nonwoven” is a substrate comprising a mixture of fibers in which the individual fibers or filaments are arranged in a structure in the form of batting in an irregular manner. Means a substrate that is woven or knitted. The fibers of the nonwoven fabric of the main body are bonded together as a whole under the influence of either mechanical action (water jet) or thermal action, or by the addition of a binder.

  Such nonwovens are defined, for example, in the standard ISO9092, as woven fabrics or batting of fibers arranged in one or random directions, joined by friction and / or cohesion and / or adhesion. Cage, paper, and woven, knitted, tufted and stitched products are excluded.

  As will be seen later in this specification, the nonwoven body 12 is generally referred to in the context of the present invention by a dry process, in particular by carding, or by a process of aerodynamic deposition called “airlaid”. ,can get. In another form, the nonwoven body 12 of the present invention is obtained by a wet process in a procedure similar to paper making.

  “Cellulose fibers” are natural cellulose-based fibers, ie either harvested from plants or obtained by mechanically treating plants such as grinding, pressing, crushing and / or separation. , Means fiber directly derived from plants. “Cellulose fiber” also means modified cellulose, ie, natural cellulose or solubilized natural cellulose fibers that have been reacted with chemical components. “Cellulose fiber” also means regenerated cellulose that has been solubilized in a solvent and then reformed in the form of fibers, ie, optionally modified natural cellulose fibers.

  Such cellulose fibers are advantageously biodegradable.

  Such cellulose fibers contain at least 50% cellulose or cellulose derivatives.

  Therefore, the fibers of the nonwoven fabric body 12 do not contain synthetic fibers. “Synthetic fiber” means a fiber that does not have a natural precursor polymer, such as a fiber obtained by polymerization of a synthetic monomer derived from petroleum. Synthetic fibers include, among others, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate, polyamides such as nylon, and fluorinated or chlorinated polymers such as polyvinyl chloride. Such fibers are not biodegradable and therefore cannot be used to make the nonwoven body 12 of the application device 10 according to the present invention.

  The bamboo fiber 14 of the nonwoven fabric body 12 is obtained from a plant called “bamboo ream” of the “rice” family.

  The bamboo fibers 14 are advantageously obtained from regenerated cellulose of bamboo.

  For such purpose, this method of making bamboo fiber is to cut the collected bamboo mechanically to obtain chips, to screen, and then to wash the chips so formed and heat treatment Bleaching and tapping, followed by etiolation in the dark.

  This operation then includes the steps of filtering, spinning to obtain the fibers, and cutting the fibers before drying.

  Such a method is described, for example, in Chinese patent application CN1458306.

  The fibers obtained thereafter preferably have an average length of more than 5 mm, in particular from 5 mm to 50 mm, preferably from 30 mm to 50 mm, in particular substantially equal to 38 mm.

  The diameter of the fibers 14 is 5 μm to 30 μm, and the titre is 1.2 dtex to 1.7 dtex.

  The density of the bamboo fiber 14 is 1.2 to 1.4 and is substantially equal to 1.3. The moisture content of the bamboo fibers 14 is between 5% and 15% by weight, and is advantageously substantially equal to 12%.

  The elongation at break of the bamboo fiber 14 is 10% to 25%, preferably 20% to 25% in the dry state.

  The tenacity of the bamboo fiber 14 is 2-4 cN / dtex, preferably substantially equal to 2.2 cN / dtex.

Bamboo fiber 14 has a deep white color. Therefore, when producing a nonwoven fabric exclusively containing bamboo fiber 14, the lightness “L” of this nonwoven fabric is 85 when measured in the “L ^* a ^* b” color representation model developed by the International Lighting Commission in accordance with standard CIE1976. ~ 92, "a" component is -0 to -2, and "b" component is 2 to 5.

  The solubility of bamboo fiber 14 after immersion for 30 minutes in a 20 ° C. solution containing 55.5% standard sulfuric acid is more than 25%, preferably more than 30%, in particular substantially equal to 32%.

  Furthermore, the roundness of the bamboo fiber may be less than 50%, in particular substantially equal to 40%.

  The mass ratio of the bamboo fiber in the mixture of the bamboo fiber 14 and the cellulose fiber 16 other than bamboo is 20% by mass to 100% by mass with respect to the total mass of the bamboo fiber 14 and the cellulose fiber 16 other than bamboo. , Preferably from 38% to 100% by weight.

  Advantageously, the weight ratio is from 38% to 70%, preferably from 38% to 50%, or from 58% to 70%, or from 80% to 100%, preferably Is 92 mass% to 99 mass%.

Bamboo fiber is marketed, for example, by the Chinese company TANGSHAN SANYOU (1.6dtex ^* 38mm, bamboo fiber, light color) or under the trade name 1.56dtex by the Chinese company BAMBRO TEX.

  Cellulose fibers 16 other than bamboo are obtained based on plant-derived natural cellulose fibers, artificial cellulose fibers obtained on the basis of modified and / or regenerated cellulose, or mixtures thereof.

  Examples of plant-derived natural cellulose fibers are cotton, hemp, jute, wool or wood pulp.

  Artificial cellulose fibers are obtained by processing natural cellulose.

  Such fibers are, for example, in the general manner by the International Bureau for the Standardization of Man-made Fibers (BISFA), cellulose fibers of the “acetate” or “triacetate” type obtained by acetylation of the hydroxyl groups of cellulose, For example, an “alginate” type fiber obtained from a metal salt of alginic acid such as an alkali metal salt or alkaline earth metal salt of alginic acid such as calcium alginate, or a compound in which natural cellulose contains copper and an amine (cupratetetraamine (cupratetraamine It is defined to be a “cupro” type cellulose-based fiber obtained by a “copper ammonia” process that is dissolved in, eg) dihydroxide.

  Advantageously, the cellulose fibers 16 other than bamboo are viscose fibers. In the context of the present invention, “viscose fibers” means fibers obtained by a “viscose” process as defined by BISFA, in which, advantageously, one or more basic solutions of cellulose xanthate are present. Pull out in the form of fibers from the regenerative bath. This fiber may have a high rupture strength, in which case it is described as “modal”.

  Advantageously and in another form, the cellulose fibers 16 other than bamboo are lyocell fibers. “Lyocell fiber” means a cellulose fiber obtained by a spinning process from an organic solvent containing a mixture of an organic chemical product and water, and the expression “spinning with a solvent” means that cellulose solvent is not formed in the solvent without forming a cellulose derivative. Means to dissolve.

  In the process that BISFA describes as the “lyocell” process, natural cellulose is converted to a mixture of water and a tertiary amine-N-oxide, such as an amine-N-oxide, for example N-methylmorpholine-N-oxide. Once dissolved, it is extruded through a vent passage into the precipitation bath to form fibers. Such a process is described, for example, in FR2450293.

  The length of the cellulose fibers 16 other than bamboo so obtained is 10 mm to 50 mm, preferably 30 mm to 50 mm, substantially equal to 40 mm. The diameter of the fiber 16 is 5 μm to 30 μm.

  When measured according to the standard, the cellulose fiber 16 other than bamboo has a cotton density of 1.5 dtex to 2.0 dtex and a tenacity at break of 20 cN / tex to 40 cN / tex, preferably 16 to 34 cN / tex. Furthermore, when measured according to the standard, the elongation at break of the cellulose fibers 16 other than bamboo is 8% to 25%.

In accordance with standard CIE1976, when measured in the `` L <sup>*</sup> a <sup>*</sup> b '' color representation model developed by the International Commission on Illumination, the brightness `` L '' of nonwoven fabrics formed exclusively from fibers 16 is over 91%, `` a '' component and The “b” components are 0 to 1 and −3 to −2, respectively. Therefore, the cellulose fibers 16 other than bamboo are white.

  The mass ratio of the cellulose fibers 16 other than bamboo is 0% by mass to 80% by mass, and preferably 0% by mass to 62% by mass with respect to the total mass of the fibers 14 and 16 constituting the main body 12.

  Advantageously, the ratio is from 30% to 62%, preferably from 50% to 62%, or from 30% to 42%, or from 0% to 20%, preferably Is 1 to 8% by mass.

  The sum of the mass ratio (%) of the bamboo fibers 14 and the mass ratio (%) of the cellulose fibers 16 other than bamboo is equal to 100%.

  Advantageously, the fibers 16 are based on viscose fibers or lyocell fibers (commercially sold by the Austrian company LENZING under the respective trademarks “LENZING VISCOSE®” and “LENZING LYOCELL®”). Produced.

  Advantageously, the mechanical bonding of the nonwoven body 12 is maintained without the use of chemical binders.

  In another form, a chemical binder is used. The binder is, for example, an acrylic emulsion, a vinyl acetate-ethylene type emulsion, a styrene-butadiene-styrene type emulsion or a vinyl chloride emulsion.

  Thus, as shown by FIG. 1, the nonwoven body 12 of the device 10 has bamboo fibers 14 visible and dispersed in a homogeneous manner in the structure of the cellulose fibers 16 other than bamboo, and naturally applied to the application device 10. Has an outer surface that imparts a good appearance.

  The body 12 has the following equation for a nonwoven formed exclusively from cellulose fibers 16 as defined above:

(In the formula, L ₁ , a ₁ and b ₁ are the `` L <sup>*</sup> a <sup>*</sup> b '' coefficients of the nonwoven fabric body 12, and L <sub>2</sub> , a <sub>2</sub> and b <sub>2</sub> are `` of a nonwoven fabric produced exclusively on the basis of the fiber 16 '' L ^* a ^* b '' coefficient)
The coefficient ΔE exceeds 2 as defined by

The basis weight of the body thus obtained is 40 to 250 g / m ² .

  The nonwoven body 12 of the application device advantageously carries a makeup, a makeup removing composition, a nail enamel remover, or more generally at least one cosmetic product such as a cream, emulsion or lotion.

  Such a carrying operation can be performed at the manufacturing site after the body 12 is manufactured and before the user uses the device 10, and then the cosmetic-loaded device 10 can be packaged for delivery to the user. Deploy.

  In another form, the nonwoven fabric body 12 may be separated from the cosmetic product before the user uses it, and when used, the user himself applies the cosmetic product to the nonwoven fabric body 12.

  An example of a method of manufacturing the application device 10 according to the present invention will now be described.

  First, bamboo fiber 14 as described above and cellulose fiber 16 other than bamboo as described above are supplied and mixed to obtain a substantially homogeneous mixture of fiber 14 and fiber 16.

  The method then includes the steps of forming the nonwoven body 12, consolidating the body 12, and then finishing.

  The step of forming the body 12 is performed by either a dry process or a wet process, such processes being described by the terms “drylaid” and “wetlaid”, respectively.

  In the dry process, the body 12 is advantageously formed by carding or by an aerodynamic deposition process called “airlaid”.

  For carding work, use a conveyor belt so that the packing of fibers 14, 16 is first opened and mixed, and then the fibers 14, 16 are sown, individualized and then oriented according to a common axis. Send to carding machine.

  The fibers 14, 16 of the nonwoven body 12 obtained by carding are deposited on a main drum substantially parallel to each other in the machine direction.

  In the aerodynamic deposition process, a carding machine is used to form a mat of fibers 14, 16 and send it to a rotating roller. Under the action of centrifugal force, the batting of the fibers 14, 16 is thrown into the air stream, in which the fibers lose all the preferred directions and then rest on the forming belt in turn.

  In the wet process, a very thin paste containing fibers 14, 16 is deposited on the conveyor belt. Next, water is removed from the belt by suction and dewatered to form the main body 12. Next, the main body 12 is compressed between cylinders and then dried.

  The fibers 14 and 16 obtained in the body 12 thus formed are highly variable in direction.

  In the consolidation step, various types of bonds are used to ensure mechanical attachment of the body 12.

  Advantageously, the body 12 is consolidated using a mechanical connection.

  The first type of mechanical coupling is a needle punch that weaves needles (preferably with folds) to weave them through the fibers 14, 16 of the body 12 vertically. This technique makes it possible to obtain a nonwoven fabric having a large basis weight and thickness.

  Advantageously, this coupling is performed by a water jet by a technique called “spun lace” or “water-jet consolidation”.

  In this process, the fibers 14 and 16 of the main body 12 are interwoven with a high-pressure water jet. When in contact with the jet, the fibers are rearranged in three dimensions of the body 12 and consolidation can be achieved without the addition of a binder. The strength of the non-woven fabric to be obtained is determined by the jet pressure (for example 50 to 200 bar).

  In another form, thermal bonding is used by compressing the body 12 between two cylinders to fuse the fibers 14, 16 together at high speed. A controlled flow of hot air or ultrasound may be used to bond between the fibers 14,16.

  In another form, chemical bonding is effected by applying to the body 12 a binder, preferably formed from an acrylic emulsion, a vinyl acetate-ethylene emulsion, a styrene-butadiene-styrene emulsion or another dispersion polymer.

  The binder is applied uniformly, either intermittently or continuously, by impregnation, coating or spraying.

  In the finishing step, chemicals may be added after the body 12 is consolidated. A mechanical embossing process may be used, among other things, to create a design on the body 12.

  Next, three examples of wipes according to the present invention based on a mixture of viscose fibers and bamboo fibers or exclusively based on bamboo fibers, and wipes made exclusively from viscose fibers The comparative example is described in Table 1 below.

  This wipe is manufactured by a dry process and consolidated by a water jet. No binder is added to compact the nonwoven body.

In order to show the natural appearance of the wipe according to the present invention, the results of colorimetric analysis by the L ^* a ^* b method are listed in Table 2.

  In order to show the increase in gloss observed with the application device according to the invention, the gloss results of the wipes produced are listed in Table 3.

  Gloss is quantified using a reflectometer that measures the intensity of light reflected at a narrow range of reflection angles on the surface to be measured. The reflectometer measurement results are based on a comparison with the amount of light measured on a polished black glass standard having a specified refractive index. For the standard built, fix the measured value in 100 gloss units.

  The results shown in Table 3 were obtained using a “micro-Tri-Gloss” device manufactured by a company called BYK GARDENER. The result is obtained, inter alia, according to the standard DIN EN ISO2813.

  As will be appreciated, the presence of bamboo fibers increases gloss, especially at an illumination angle of 85 °. The appearance of the application device 10 according to the invention is thereby improved.

  In addition, the tensile strength of the device 10 according to the present invention was measured. The results are summarized in Table 4 below.

  For each of the following conditions in the machine direction and the transverse direction, the test is carried out by the EDANA method using five rectangular test pieces having dimensions (250 +/− 0.5 mm) × (50 +/− 0.5 mm). The test piece is kept in a desiccator at 20 ° C. and a relative humidity of 65%. The time elapsed between removal from the desiccator and the test does not exceed 30 minutes.

To obtain a relative humidity of 65%, a saturated solution of ammonium nitrate (NH ₄ NO ₃ ) is poured into the bottom of the desiccator or the climate chamber is adjusted to a temperature of 25 ° C. and a relative humidity of 65% by humidity measurement.

  The test piece is placed under a tensile load that has been applied in advance. During preloading, the speed is 1 mm / min and the applied force is 0.1 Newton. Once the preloaded load is reached, the test begins. The test speed is 100 mm per minute and the distance between the jaws is 200 mm.

  The absorption rate, ie the amount of liquid retained by the sample of the device 10 according to the present invention after a defined immersion / drainage time is summarized in Table 5 below.

  Results for each sample based on 5 rectangular specimens per sample of the device 10 according to the invention having a dimension (100 mm +/- mm) x (100 mm +/- 1 mm) with a spacing of at least 10 cm in the width direction Is obtained. Samples to be tested are conditioned for 24 hours in a climate room at 20 ° C and 65% relative humidity. A crystallizer containing city water up to a level of about 20 mm is placed in the test room for 2 hours before the test so that the temperature of the city water and room temperature are balanced. Next, samples are taken from the climate chamber and weighed individually or together and then placed on a wire mesh (size is 120 mm x 120 mm, mesh size is 2 mm). Immerse the wire mesh in water for 60 seconds while preventing air bubbles from entering, and then take it out of the container with tongs. Each sample is then pumped vertically for 120 seconds and then placed in a covered glass container. The whole is then weighed to obtain the liquid absorption rate.

  The presence of bamboo fibers does not affect the absorption capacity of the device 10 according to the present invention.

  The antimicrobial activity of the device 10 according to the present invention is measured in Table 6 below.

The activity is measured according to the 2007 standard NF EN ISO 20743 by comparison with a control formed from cotton. The strain used is Staphylococcus aureus ATCC6538. The seeding suspension contains 1.02 × 10 ⁵ CFU / ml (wherein the term CFU stands for “colony forming unit”).

  To quantify the average logarithm of colony forming units (CFU / tp) per test piece (tp), the results are measured on three identical samples.

  As shown by Table 6, the device according to the present invention has bacteriostatic activity compared to the cotton control.

  Alternatively (not shown), the application device 10 is placed on the free end of the grasping device to form a tool for applying cosmetics to the user (eg, to the user's keratin fibers).

  As described above, the length of the bamboo fiber 14 is 5 mm to 50 mm, and the length of the cellulose fiber 16 other than the bamboo is 10 mm to 50 mm.

  Advantageously, the quotient of the average length of bamboo fibers 14 versus the average length of cellulose fibers 16 other than bamboo is 0.9-1.1.

  Similarly, as previously indicated, the average diameter of the bamboo fibers 14 is 5 micrometers to 30 micrometers, and the diameter of the cellulose fibers 16 other than bamboo is 5 micrometers to 30 micrometers.

  Advantageously, the quotient of the average diameter of the bamboo fibers 14 versus the average diameter of the cellulose fibers 16 other than bamboo is from 0.9 to 1.1.

  Choosing such a quotient of average length and / or average diameter facilitates production of the nonwoven body 12. In addition, when such a quotient is selected, the tear strength of the nonwoven fabric body 12 constituting the device 10 is increased.

10 Application devices
12 Nonwoven fabric body
14 Bamboo fiber
16 Cellulose fiber

Claims (12)

  A device (10) for applying cosmetics, comprising a nonwoven fabric body (12) formed on the basis of a fiber, wherein the fibers forming the nonwoven fabric body are all cellulose fibers. The device (10), wherein the fibers to be formed include bamboo fibers (14) at least 20% by mass relative to the total mass of the fibers forming the nonwoven fabric body (12).   The fiber forming the nonwoven fabric body (12) comprises 38 mass% to 100 mass% bamboo fiber (14) with respect to the total mass of the fibers forming the nonwoven fabric body. The device (10) according to 1.   The fibers forming the nonwoven fabric body (12) are 38% to 70% by weight, preferably 38% to 50% by weight, based on the total weight of the fibers forming the nonwoven fabric body (12), or 60% to 70% by weight bamboo fiber (14) or 80% to 99% by weight, preferably 92% to 99% by weight bamboo fiber (14) A device (10) according to claim 1 or 2.   Device (10) according to any one of claims 1 to 3, characterized in that the average length of the bamboo fibers (14) is greater than 5 mm, preferably between 10 mm and 60 mm.   The nonwoven fabric body (12) is formed on the basis of a mixture of cellulose fibers containing bamboo fibers (14) and cellulose fibers (16) other than bamboo, according to any one of claims 1 to 4. A device (10) according to paragraphs.   6. Device (10) according to claim 5, characterized in that the cellulose fibers (16) other than bamboo are selected from viscose fibers, lyocell fibers and mixtures thereof.   Device (10) according to any one of claims 4 to 6, characterized in that the average length of the cellulose fibers (16) other than bamboo is 15 mm to 50 mm, preferably 30 mm to 50 mm.   The device (10) according to any one of claims 1 to 4, characterized in that all the cellulose fibers of the nonwoven fabric body (12) are bamboo fibers (14).   The device (10) according to any one of claims 1 to 8, characterized in that the nonwoven fabric body (12) is a sheet that deforms when touched.   The quotient of the average length of the bamboo fibers (14) to the average length of the cellulose fibers (16) other than the bamboo is 0.9 to 1.1, according to any one of claims 5 to 9, Devices (10).   11. Device according to any one of claims 5 to 10, characterized in that the quotient of the average diameter of the bamboo fibers (14) versus the average diameter of the cellulose fibers (16) other than the bamboo is 0.9 to 1.1. (Ten). A method for manufacturing a device (10) according to any one of claims 1 to 11, comprising
Supplying cellulose fibers containing at least 20% by mass bamboo fiber with respect to the total mass of the cellulose fibers;
Physical, chemical and / or mechanical bonding of the cellulose fibers to form a fiber-based nonwoven body (12), wherein the fibers forming the nonwoven body are all cellulose fibers Process,
A method comprising the steps of:

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