EP1189531B1 - Hydrophilic cotton product comprising a soft surface and a scraping surface - Google Patents

Hydrophilic cotton product comprising a soft surface and a scraping surface Download PDF

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Publication number
EP1189531B1
EP1189531B1 EP00951582A EP00951582A EP1189531B1 EP 1189531 B1 EP1189531 B1 EP 1189531B1 EP 00951582 A EP00951582 A EP 00951582A EP 00951582 A EP00951582 A EP 00951582A EP 1189531 B1 EP1189531 B1 EP 1189531B1
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EP
European Patent Office
Prior art keywords
layer
fibers
striations
product according
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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EP00951582A
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German (de)
French (fr)
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EP1189531A1 (en
Inventor
Bernard Louis Dit Picard
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Essity Operations France SAS
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Georgia Pacific France SAS
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Priority to EP01121057A priority Critical patent/EP1167605B1/en
Publication of EP1189531A1 publication Critical patent/EP1189531A1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D40/00—Casings or accessories specially adapted for storing or handling solid or pasty toiletry or cosmetic substances, e.g. shaving soaps or lipsticks
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/02—Cotton wool; Wadding
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D04H1/495—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet for formation of patterns, e.g. drilling or rearrangement
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/498—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres entanglement of layered webs
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H13/00—Other non-woven fabrics
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/10—Details of applicators
    • A45D2200/1009—Applicators comprising a pad, tissue, sponge, or the like
    • A45D2200/1018—Applicators comprising a pad, tissue, sponge, or the like comprising a pad, i.e. a cushion-like mass of soft material, with or without gripping means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24595—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness and varying density
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24595—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness and varying density
    • Y10T428/24603—Fiber containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/24612—Composite web or sheet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/66—Additional nonwoven fabric is a spun-bonded fabric
    • Y10T442/663—Hydroentangled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/666—Mechanically interengaged by needling or impingement of fluid [e.g., gas or liquid stream, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/696—Including strand or fiber material which is stated to have specific attributes [e.g., heat or fire resistance, chemical or solvent resistance, high absorption for aqueous compositions, water solubility, heat shrinkability, etc.]

Definitions

  • the subject of the invention is a cotton wool product made up of one hundred one hundred cotton fibers and intended in particular for cosmetic use: make-up and / or removing makeup from the skin.
  • Patent application No. 0 750 062 describes skin cleansing articles which are both gentle on the skin and sufficiently resistant to allow friction on the skin without causing irritation or damage to the latter. The rubbing action allows the elimination of impurities and dead cells from the surface of the skin.
  • These articles include a nonwoven substrate, preferably hydrolyzed, having a grammage of 20 to 150 g / m 2 , characterized by a specific coefficient of friction.
  • the substrate preferably comprises at least in part long fibers capable of emerging from the main surface under the action of friction while remaining attached to the substrate. It can be composed of a mixture of hydrophilic and hydrophobic fibers or of purely hydrophilic or purely hydrophobic fibers.
  • At least one side of the article or substrate used essentially ensures the skin cleansing function. It also serves as a support for products cleansers or makeup removers such as lotions or toilet milks. In the case where the article cleaning the skin would consist only of this substrate, the two faces of the article is indistinguishable and can be used interchangeably to cleanse the skin.
  • European patent application No. 0 851 052 discloses a pad for removing makeup cotton, especially for cosmetic use, comprising at least two layers. To avoid fiber loss while maintaining a quality of softness and absorption, the fibers of the outer layers are longer than those of the layer (s) power stations. The thickness of the central layer (s) is preferably greater than the thickness of the outer layers. Nor do such products exhibit separate sides allowing specific use per side.
  • Cotton cleansing products are most often composed of a mixture of cotton fibers of different qualities or a mixture of cotton fibers and other fibers depending on the product sought or the manufacturing process used. Of such products are of homogeneous composition throughout their thickness. Some others products consist of several layers or layers. But it does appear from the above that the two outer layers are always of composition identical and cannot be differentiated.
  • the European patent application N ° 0 826 811 proposes a complex absorbent nonwoven material comprising one side flexible and a rough face.
  • This material consists of at least two layers superimposed fibers, linked together by interpenetration of fibers in the direction of thickness.
  • the first layer consists of all or part of fibers hot-melt synthetics preferably selected from the class of polyolefins and the second layer consists of natural and / or artificial fibers and / or synthetic finer than the fibers of the first layer.
  • Fibers synthetics used in the composition of the first layer make it possible to produce the scraping surface of the article. This scratching effect is obtained by reorientation of the synthetic fibers to present free ends or loops visible on an outer face and by fusion of the free ends of the synthetic fibers.
  • This product is not intended for cosmetic use but is suitable for make semi-scouring or very absorbent wiping products.
  • the object of the invention is to provide a cotton product for removing makeup. comprising two separate faces.
  • a first face is described as scratching and has for the function of cleaning the skin, in particular for removing make-up, for example using a milk or lotion.
  • the other side is soft and allows the application of a make-up product, milk, lotion or cream on the face or skin. Differentiation of the faces is essentially done by touch and if necessary, in addition, visually.
  • the invention also aims to provide a "natural" product consisting only natural fibers without the addition of artificial and / or synthetic fibers, nor of binder, which also makes it easy to recycle the scrap produced during of the manufacturing process.
  • the subject of the invention is a cotton wool product made up of one hundred hundred cotton fibers comprising at least a first and a second layer exterior.
  • the first layer is made up of fine fibers with a low micron index forming one side soft and the second layer consists of fibers with a micron index higher forming a scraping face.
  • the micronaire index represents the average mass of fibers per unit of length, in ⁇ g / inch, of a cotton product sample tested. This index is directly related to the middle section of the fibers. It defines the size of the fibers of cotton and is measured using a measuring device such as SHEFFIELD Micronaire. Further details on this index and its measurement method are given in the description which follows.
  • the first layer outer has a micronaire index between 2 to 5 ⁇ g / inch and the second outer layer has a micron number between 4 to 10 ⁇ g / inch, the difference between the micron indices of the two outer layers being at least 1 ⁇ g / inch.
  • the first layer has a micronaire index between 2.8 and 4.2 ⁇ g / inch and the second layer present a micronaire index between 5 and 8.5 ⁇ g / inch.
  • the outer layers have a grammage of at least 8 g / m 2 .
  • the product comprises plus at least one central layer disposed between the two outer layers.
  • the outer layers have ridges on the surface, the spacing between the streaks of one of the layers being less than the spacing between the streaks of the other layer.
  • the invention also relates to a process for manufacturing a product of cotton wool according to the invention whose outer layers have on the surface streaks.
  • each outer layer is hydroliaged by means of water jets whose axes are spaced from each other a given distance, this distance being different between the jets used for the first layer and the jets used for the second layer so as to obtain outer layers having streaks on the surface with different spacing.
  • the product according to the invention consists of one hundred percent natural fibers of cotton and comprises at least two layers or tablecloths each having one side exterior.
  • the first layer consists of fine and soft fibers which have a low micronaire index.
  • the second layer on the contrary, consists of fibers of more cross section. large having a higher micronaire index and therefore having an effect scratching.
  • micronaire index is measured using a SHEFFIELD type device Micronaire according to a defined method, for example the ISO 2403 method or NF G 07-073.
  • This index is used to characterize the fineness of the cotton fibers. Its measurement is based on the air permeability of a cotton mass under certain specific conditions, on an arbitrary scale called a micron scale, calibrated using a series of cottons (ten standard cottons) to which indices have been assigned micronaires by international agreement.
  • a micron scale calibrated using a series of cottons (ten standard cottons) to which indices have been assigned micronaires by international agreement.
  • We measure the air permeability of a given sample taken from an outer layer of the product according to the invention (constituting the test specimen), by reading the resistance to the passage of the air flow on the air flow device, on a scale graduated according to variations in flow air or pressure differences. This scale has been previously calibrated with the reference cotton series.
  • the apparatus includes a balance for measuring the mass of the test tube, an air flow device for measuring the micronaire index, consisting of a perforated compression cylinder containing the test specimen and devices necessary for measuring the air permeability of the test piece, such as an air pump, means for adjusting the air flow or the pressure passing to through the test tube in the compression cylinder, a pressure gauge to read the pressure difference required and a flow meter for reading the air flow at across the test tube, and if necessary a scale graduated in index values micronaire or a table providing the conversion of readings into micronaire index. Sampling and sampling of samples is done for example in accordance with standards NF G 07-050 and NF G 07-062.
  • test piece is then determined.
  • test piece in the compression cylinder and one sets up the fiber compression piston, which is then locked.
  • finish air at the appropriate pressure or flow rate and note the pressure difference over the scale of the instrument.
  • the average of the readings obtained for all the test specimens is calculated taken from the same sample.
  • direct readings are converted to micronaire indices from the conversion curve.
  • micronaire index representing the average mass of fibers per unit of length is expressed in ⁇ g / inch.
  • the first layer of the product according to the invention consists of fibers of cotton with a micron index between 2 and 5 ⁇ g / inch, preferably between 2.8 and 4.2 ⁇ g / inch.
  • the second layer consists of cotton fibers having an index higher micronaire between 4 and 10 ⁇ g / inch, preferably between 5 and 8.5 ⁇ g / inch.
  • deci-tex is also a measure of the mass of a fiber or a thread per unit in length but which is a specific measure of artificial and synthetic fibers.
  • the latter have a regular profile unlike natural fibers whose cross-section is variable and depends on the state of maturity of the fiber.
  • ASTM standard D 3818-79 Fullness and maturity index of cotton fibers
  • the fineness or titer of the fibers has been estimated at 4.04 dtex, which is less than the titer of synthetic fibers used for the face scratching of the wiping products described in the European patent application No. 0 826 811.
  • the cotton layers or tablecloths forming the product according to the invention can be of identical or different grammage.
  • the first layer consisting of soft fibers and having a low micron index may be of a grammage between 10 and 40 g / m 2 and the second layer consisting of fibers having a scraping effect may be of a grammage between 10 and 300 g / m 2 .
  • the layer consisting of soft fibers may have a grammage between 10 and 300 g / m 2 and the layer consisting of fibers having a scraping effect, a grammage between 10 and 40 g / m 2 .
  • FIG. 1 Another example illustrated by FIG. 1 is a product for removing makeup 1 comprising two layers.
  • the first outer layer 2 has a low micron index and the second outer layer 3 has a high micron index.
  • the grammage of each of these two layers is between 50 and 250 g / m 2 .
  • the product can also have more than two layers. One or more central layers are then placed between the two outer layers provided that the micronaire indices of the fibers constituting each of these two layers surfaces are different from one layer to another to obtain a soft face and a more scratchy face.
  • the outer layers have a minimum grammage of 8 g / m 2 , in order to have a significant differentiation effect and neutralize the feel of the central layer or of one of the outer layers.
  • the increase in the grammage of each outer layer reinforces this differentiation by avoiding a reduction in the desired effect generated for example by the soft fibers of an outer layer in contact with the other outer layer made up of so-called scraping fibers and having a too light grammage or by a central layer of average micron index or by the soft fibers of a central layer placed just below an outer layer made up of so-called scraping fibers and having a too light grammage.
  • Figure 2 shows schematically in cross section a product 4 consisting of three layers of cotton.
  • the first outer layer 5 has a basis weight between 10 and 40 g / m 2 and has a low micron index.
  • the second outer layer 6 also has a grammage between 10 and 40 g / m 2 but has a high micron index.
  • the central layer 7 located between the two outer layers has a basis weight between 50 and 300 g / m 2 .
  • Figure 3 shows schematically in cross section another product 8 comprising three layers.
  • the first layer 9 has a grammage between 10 and 40 g / m 2 and has a low micronaire index while the second outer layer 10 has a grammage between 50 and 200 g / m 2 for a higher micronaire index.
  • the central layer 11 disposed between the two outer layers has a basis weight between 50 and 200 g / m 2 .
  • Figure 4 shows in cross section another variant of the product according to the invention.
  • This product 12 is composed of three layers, an outer layer 13 having a basis weight between 10 and 40 g / m 2 and a high micron index and another outer layer 14 having a basis weight between 50 and 200 g / m 2 and of low micronaire index, surrounding a central layer 15 having a grammage between 50 and 200 g / m 2 .
  • Figure 5 always shows in cross section a product 16 comprising four layers of cotton.
  • the first outer layer 17 has a low micron index and the second outer layer 18 has a high micron index, both having a basis weight between 10 and 40 g / m 2 .
  • the product further comprises two central layers 19 and 20 each having a basis weight between 50 and 200 g / m 2 , arranged between the two outer layers.
  • the process for manufacturing the products according to the invention consists in preparing at least two layers of cotton fibers forming the two outer layers of the product, one with a low micronaire index, the other with a higher micronaire index.
  • the difference between the micron indices of the two outer layers is at least equal to 1 ⁇ g / inch.
  • Tablecloths can be made directly from cotton hydrophilic and bleached. They can also be obtained from unbleached raw cotton, then chemically treated to obtain hydrophilicity and bleaching. After cotton tablecloths or tablecloths, the cotton tablecloths are superimposed and are then associated by any known means such as bonding means or means mechanical such as calendering or needling. The means of association can still be hydraulic.
  • a good association can be obtained by impregnating the tablecloths superimposed by any known conventional means such as passing through a bath impregnation, spraying, spilling a solution.
  • This impregnation must be associated with an expression compacting the water table and eliminating part of the quantity of liquid contained in the wet sheet for example by calendering or passage on a vacuum slot.
  • European patent N ° 0 681 621 in the name of the applicant. In the latter case, the impregnation of the layers carried out during the different chemical treatments, contribute to their association.
  • the sheets are combined by hydroletting, that is to say by means of high pressure water jets combined with vacuum expression.
  • hydroletting that is to say by means of high pressure water jets combined with vacuum expression.
  • Such an association can be performed on a device marketed by the company ICBT-PERFOJET, Grenoble, France. This last technique allows both the association of the two plies between them and the bond of at least one surface of the ply thus reducing the fluffing of products.
  • This hydroliage step in the case of an unbleached fiber which will be treated chemically, can intervene just after the impregnation stage of the water table as this is described in European patent application No. 0 735 175. It can also be placed in the final rinsing phase according to European Patent No. 0 805 S88 in the name of the plaintiff.
  • Products in formats are then cut from the tablecloths thus associated by any conventional means.
  • One of the manufacturing advantages of the product according to the invention is its one hundred percent cotton fiber composition. Indeed, this allows to recycle easily waste from cutting using scraps for composition new products.
  • the user can differentiate the face soft from the most itchy side.
  • the composition of the first outer layer of cotton with low micron index will include an agent softener distributed mainly on the surface of this layer.
  • the hydroliage technique already used will be used to combine the tablecloths and avoid linting, to visually differentiate the two sides of the product.
  • the different layers are prepared, then superimposed; the whole is impregnated.
  • the two outer layers are then hydroliated one after another on endless canvases or cylinders.
  • the hydroliaging device includes a high pressure pump supplying an injector placed transversely to the running of the sheet or layer of fibers, over its entire width.
  • the injector consists of a volume of pressurized water, closed by a blade of steel which is perforated with calibrated holes producing jets in the form of fines high pressure water needles projected perpendicular to the surface of the water table fiber. These fine jets entangle the fibers.
  • the holes punched in this steel blade have a diameter ranging from 100 to 200 ⁇ m preferably 120 to 140 ⁇ m and are regularly spaced.
  • the distance between the axes of two consecutive holes of the steel blade is generally between 0.5 and 3 mm, the more often between 0.6 and 1 mm.
  • a hydroliage device whose blade is perforated with a significant distance between the holes from 1.2 to 3 mm, preferably from 1.6 to 2.5 mm, and for the other side, a device whose blade is perforated with a distance between the holes between 0.4 and 1.2 mm, preferably between 0.5 and 0.8 mm.
  • the streaks or grooves with a spacing of 1.2 to 3 mm will be more visible on the face as treated as the streaks on the other side.
  • This product 21 includes a first outer layer 22 with a micron index of 3.4 ⁇ g / inch and a basis weight of 25 g / m 2 , a second outer layer 23 with a micron index of 6.8 ⁇ g / inch and a grammage of 25 g / m 2 and a central layer 24 of 200 g / m 2 .
  • the face 25 of the outer layer 22 has grooves 26 having a spacing d 1 of 0.6 mm and the face 27 of the outer layer 23 has grooves 28 having a spacing d 2 of 2 mm.
  • make-up and / or make-up removal The user is thus guided to discern the soft face from the more scratching the product in order to use each side of the product in its proper destination: make-up and / or make-up removal.
  • the increased distance between the holes in the perforated blade has as a direct consequence a reduction in the number of holes and therefore a contribution of lower energy on the water table which it is not always possible to compensate by an increase in the water pressure in the injector.
  • This decrease in energy transmitted to the tablecloth can cause an increase in lint compared to result obtained on a sheet having undergone a hydroliage step by means of a blade perforated, the distance between the holes is small and uniform.
  • you can use a perforated blade with holes sequence for example groups of 6 holes spaced 0.6 mm apart, each group being spaced next 1.8 mm.
  • the pitch is important to around 4.8 mm.
  • the increase in linting is thus limited thanks to a average frequency of holes higher than that of a blade regularly perforated by example at a distance of 1.8 mm.
  • the average number number of holes per meter is 1250, whereas in the case of regularly spaced holes at a distance of 1.8 mm, this number is 555.
  • FIG. 7 illustrates a blade perforated with holes according to a sequence, here by group of 5 holes spaced by a distance e 1 equal to 0.6 mm, each sequence or group of holes being spaced from the next by a distance e 2 equal to 1.8 mm.
  • first outer layer which has ridges with a certain distance between 0.4 and 1.2 mm (here 0.6 mm) and a second outer layer which has streaks in a sequence comprising several groups of streaks, each group of streaks having a certain spacing between the streaks, this spacing being between 0.4 and 1.2 mm (here 0.6 mm) and each group being spaced from the next group by a distance between 1.2 and 4 mm (here 1.8 mm).
  • the user thus has a cotton product whose two sides are distinguish, which retains its qualities of mechanical resistance, lint resistance, cohesion (resistance to delamination) and softness even if one side has an effect more scraping than the other for cleaning.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Materials For Medical Uses (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Preliminary Treatment Of Fibers (AREA)
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  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

Hydrophilic cotton product with front soft surface and rough reverse surface, comprises first soft external layer of fine fibers, and second rough external layer of large fibers. The product, consisting totally of cotton fibres, comprises at least one first and one second external layer, the former made of fine fibers with low micron index, forming soft surface, and the latter of larger fibers with higher micron index, forming rough surface. The surface of the external layers may be divided into stripes, with the space between the stripes of first external layer smaller than that of the second external layer, preferably 0.4-1.2 mm and 1.2-3 mm, respectively, or the second layer may have a sequence of groups of stripes, with the space between the stripes in each group 0.4-1.2 mm and the space between each group and the next one equal 1.4-4 mm. At least one of the external layers may have surface imprint, and the first external layer (soft) may comprise softening agent distributed within this layer. Independent claims are also included for: (1) the process of making hydrophilic cotton product as claimed, during which each external layer is sprayed with jets of water with the determined distance between the axes of each consecutive jet, and this distance is adjusted in such manner as to produce different space between the stripes produced by jets on the first layer to that produced on the second layer; and (2) the use of the product as claimed for applying and/or removing make-up.

Description

L'invention a pour objet un produit de coton hydrophile constitué à cent pour cent de fibres de coton et destiné notamment à un usage cosmétique : le maquillage et/ou le démaquillage de la peau.The subject of the invention is a cotton wool product made up of one hundred one hundred cotton fibers and intended in particular for cosmetic use: make-up and / or removing makeup from the skin.

La plupart des produits en coton présents sur le marché sont sous la forme de formats découpés : ronds, ovales ou carrés à démaquiller et ont des surfaces extérieures de composition fibreuse identique. Lors de l'utilisation de ces produits, il n'est pas possible de faire une différentiation d'usage entre les deux faces du produit si l'on souhaite utiliser une face particulière pour le maquillage par exemple en appliquant un liquide : lait, lotion ou crème, et l'autre face pour le démaquillage en nettoyant la peau par essuyage et légère friction.Most cotton products on the market are in the form of cut formats: round, oval or square to remove and have surfaces surfaces of identical fibrous composition. When using these products, it it is not possible to differentiate the use between the two sides of the product if you want to use a particular face for makeup for example applying a liquid: milk, lotion or cream, and the other side for removing makeup cleaning the skin by wiping and light friction.

La demande de brevet N° 0 750 062 décrit des articles nettoyant la peau, qui sont à la fois doux pour la peau et suffisamment résistants pour permettre le frottement sur la peau sans provoquer d'irritations ou de lésions sur cette dernière. L'action de frotter permet l'élimination des impuretés et des cellules mortes de la surface de la peau. Ces articles comportent un substrat en non-tissé de préférence hydrolié ayant un grammage de 20 à 150 g/m2, caractérisé par un coefficient de frottement spécifique. Le substrat comprend de préférence au moins en partie des fibres longues capables de se dégager de la surface principale sous l'action du frottement tout en restant attachées au substrat. Il peut être composé d'un mélange de fibres hydrophiles et hydrophobes ou de fibres purement hydrophiles ou purement hydrophobes.Patent application No. 0 750 062 describes skin cleansing articles which are both gentle on the skin and sufficiently resistant to allow friction on the skin without causing irritation or damage to the latter. The rubbing action allows the elimination of impurities and dead cells from the surface of the skin. These articles include a nonwoven substrate, preferably hydrolyzed, having a grammage of 20 to 150 g / m 2 , characterized by a specific coefficient of friction. The substrate preferably comprises at least in part long fibers capable of emerging from the main surface under the action of friction while remaining attached to the substrate. It can be composed of a mixture of hydrophilic and hydrophobic fibers or of purely hydrophilic or purely hydrophobic fibers.

Au moins une face de l'article ou du substrat utilisé assure essentiellement la fonction de nettoyage de la peau. Elle sert également de support pour des produits nettoyants ou démaquillants tels que des lotions ou des laits de toilette. Dans le cas où l'article nettoyant la peau ne serait constitué que de ce substrat, les deux faces de l'article ne se distinguent pas et peuvent être utilisées indifféremment l'une de l'autre pour nettoyer la peau.At least one side of the article or substrate used essentially ensures the skin cleansing function. It also serves as a support for products cleansers or makeup removers such as lotions or toilet milks. In the case where the article cleaning the skin would consist only of this substrate, the two faces of the article is indistinguishable and can be used interchangeably to cleanse the skin.

La demande de brevet européen N° 0 851 052 révèle un tampon à démaquiller en coton à usage notamment cosmétique comprenant au moins deux couches. Afin d'éviter la perte des fibres tout en maintenant une qualité de douceur et d'absorption, les fibres des couches extérieures sont plus longues que celles de la ou des couches centrales. L'épaisseur de la ou des couches centrales est de préférence supérieure à l'épaisseur des couches extérieures. De tels produits ne présentent pas non plus de faces distinctes permettant une utilisation spécifique par face.European patent application No. 0 851 052 discloses a pad for removing makeup cotton, especially for cosmetic use, comprising at least two layers. To avoid fiber loss while maintaining a quality of softness and absorption, the fibers of the outer layers are longer than those of the layer (s) power stations. The thickness of the central layer (s) is preferably greater than the thickness of the outer layers. Nor do such products exhibit separate sides allowing specific use per side.

Les produits de coton de démaquillage sont le plus souvent composés d'un mélange de fibres de coton de différentes qualités ou d'un mélange de fibres de coton et d'autres fibres selon le produit recherché ou le procédé de fabrication utilisé. De tels produits sont de composition homogène dans toute leur épaisseur. Certains autres produits sont constitués de plusieurs couches ou nappes. Mais il ressort effectivement de ce qui précède que les deux couches extérieures sont toujours de composition identique et ne peuvent pas être différentiées.Cotton cleansing products are most often composed of a mixture of cotton fibers of different qualities or a mixture of cotton fibers and other fibers depending on the product sought or the manufacturing process used. Of such products are of homogeneous composition throughout their thickness. Some others products consist of several layers or layers. But it does appear from the above that the two outer layers are always of composition identical and cannot be differentiated.

Il existe un besoin en produits de coton présentant deux faces différentes permettant une différentiation d'usage entre les deux faces, en particulier d'usage cosmétique : une face pour le démaquillage ou nettoyage de la peau et une face pour le maquillage par application de produit sur la peau.There is a need for cotton products with two different sides allowing a differentiation of use between the two faces, in particular of use cosmetic: one side for removing makeup or cleansing the skin and one side for makeup by applying the product to the skin.

Dans le domaine de l'essuyage industriel, la demande de brevet européen N° 0 826 811 propose un matériau complexe non-tissé absorbant comportant une face souple et une face rugueuse. Ce matériau est constitué d'au moins deux nappes fibreuses superposées, liées entre elles par interpénétration des fibres dans le sens de l'épaisseur. Mais la première nappe est constituée pour tout ou partie de fibres synthétiques thermofusibles sélectionnées de préférence dans la classe des polyoléfines et la seconde nappe est constituée de fibres naturelles et/ou artificielles et/ou synthétiques plus fines que les fibres de la première nappe. Les fibres synthétiques entrant dans la composition de la première nappe permettent de réaliser la surface grattante de l'article. Cet effet grattant est obtenu par réorientation des fibres synthétiques afin de présenter des extrémités libres ou bouclettes apparentes sur une face extérieure et par fusion des extrémités libres des fibres synthétiques.In the field of industrial wiping, the European patent application N ° 0 826 811 proposes a complex absorbent nonwoven material comprising one side flexible and a rough face. This material consists of at least two layers superimposed fibers, linked together by interpenetration of fibers in the direction of thickness. But the first layer consists of all or part of fibers hot-melt synthetics preferably selected from the class of polyolefins and the second layer consists of natural and / or artificial fibers and / or synthetic finer than the fibers of the first layer. Fibers synthetics used in the composition of the first layer make it possible to produce the scraping surface of the article. This scratching effect is obtained by reorientation of the synthetic fibers to present free ends or loops visible on an outer face and by fusion of the free ends of the synthetic fibers.

Ce produit n'est pas destiné à un usage cosmétique mais est adapté pour réaliser des produits d'essuyage semi-décapants ou très absorbants.This product is not intended for cosmetic use but is suitable for make semi-scouring or very absorbent wiping products.

L'invention a pour but de fournir un produit de coton à démaquiller comprenant deux faces distinctes. Une première face est qualifiée de grattante et a pour fonction de nettoyer la peau notamment pour le démaquillage par exemple à l'aide d'un lait ou d'une lotion. L'autre face est douce et permet l'application d'un produit de maquillage, lait, lotion ou crème sur le visage ou la peau. La différentiation des faces se fait essentiellement au toucher et le cas échéant, en complément, visuellement.The object of the invention is to provide a cotton product for removing makeup. comprising two separate faces. A first face is described as scratching and has for the function of cleaning the skin, in particular for removing make-up, for example using a milk or lotion. The other side is soft and allows the application of a make-up product, milk, lotion or cream on the face or skin. Differentiation of the faces is essentially done by touch and if necessary, in addition, visually.

L'invention a également pour but de proposer un produit « naturel » constitué uniquement de fibres naturelles sans ajout de fibres artificielles et/ou synthétiques, ni de liant, permettant par ailleurs de recycler facilement les chutes produites au cours du procédé de fabrication.The invention also aims to provide a "natural" product consisting only natural fibers without the addition of artificial and / or synthetic fibers, nor of binder, which also makes it easy to recycle the scrap produced during of the manufacturing process.

L'invention a pour objet un produit de coton hydrophile constitué à cent pour cent de fibres de coton comprenant au moins une première et une seconde couches extérieures.The subject of the invention is a cotton wool product made up of one hundred hundred cotton fibers comprising at least a first and a second layer exterior.

Selon une caractéristique essentielle de l'invention, la première couche est constituée de fibres fines présentant un indice micronaire faible formant une face douce et la seconde couche est constituée de fibres présentant un indice micronaire plus élevé formant une face grattante.According to an essential characteristic of the invention, the first layer is made up of fine fibers with a low micron index forming one side soft and the second layer consists of fibers with a micron index higher forming a scraping face.

L'indice micronaire représente la masse moyenne des fibres par unité de longueur, en µg/pouce, d'un échantillon de produit de coton testé. Cet indice est directement lié à la section moyenne des fibres. Il -définit la grosseur des fibres de coton et se mesure au moyen d'un appareil de mesure tel que le SHEFFIELD Micronaire. De plus amples précisions sur cet indice et sa méthode de mesure sont données dans la description qui suit.The micronaire index represents the average mass of fibers per unit of length, in µg / inch, of a cotton product sample tested. This index is directly related to the middle section of the fibers. It defines the size of the fibers of cotton and is measured using a measuring device such as SHEFFIELD Micronaire. Further details on this index and its measurement method are given in the description which follows.

Selon une caractéristique de l'invention, la première couche extérieure présente un indice micronaire compris entre 2 à 5 µg/pouce et la seconde couche extérieure présente un indice micronaire compris entre 4 à 10 µg/pouce, la différence entre les indices micronaires des deux couches extérieures étant d'au moins 1 µg/pouce.According to a characteristic of the invention, the first layer outer has a micronaire index between 2 to 5 µg / inch and the second outer layer has a micron number between 4 to 10 µg / inch, the difference between the micron indices of the two outer layers being at least 1 µg / inch.

Selon une caractéristique préférée de l'invention, la première couche présente un indice micronaire compris entre 2,8 et 4,2 µg/pouce et la seconde couche présente un indice micronaire compris entre 5 et 8,5 µg/pouce.According to a preferred characteristic of the invention, the first layer has a micronaire index between 2.8 and 4.2 µg / inch and the second layer present a micronaire index between 5 and 8.5 µg / inch.

Selon une autre caractéristique de l'invention, les couches extérieures ont un grammage d'au moins 8 g/m2.According to another characteristic of the invention, the outer layers have a grammage of at least 8 g / m 2 .

Selon une caractéristique avantageuse de l'invention, le produit comprend de plus au moins une couche centrale disposée entre les deux couches extérieures.According to an advantageous characteristic of the invention, the product comprises plus at least one central layer disposed between the two outer layers.

Afin de distinguer plus facilement les faces et selon une caractéristique de l'invention, les couches extérieures comportent en surface des stries, l'écartement entre les stries d'une des couches étant inférieur à l'écartement entre les stries de l'autre couche.In order to more easily distinguish the faces and according to a characteristic of the invention, the outer layers have ridges on the surface, the spacing between the streaks of one of the layers being less than the spacing between the streaks of the other layer.

L'invention a également pour objet un procédé pour fabriquer un produit de coton hydrophile selon l'invention dont les couches extérieures comportent en surface des stries.The invention also relates to a process for manufacturing a product of cotton wool according to the invention whose outer layers have on the surface streaks.

Selon une caractéristique essentielle de ce procédé, chaque couche extérieure est hydroliée au moyen de jets d'eau dont les axes sont espacés les uns des autres d'une distance donnée, cette distance étant différente entre les jets utilisés pour la première couche et les jets utilisés pour la seconde couche de manière à obtenir des couches extérieures comportant en surface des stries avec un écartement différent.According to an essential characteristic of this process, each outer layer is hydroliaged by means of water jets whose axes are spaced from each other a given distance, this distance being different between the jets used for the first layer and the jets used for the second layer so as to obtain outer layers having streaks on the surface with different spacing.

D'autres caractéristiques et avantages de l'invention apparaítront plus en détails dans la description qui suit et en référence aux dessins annexés dans lesquelles :

  • la figure 1 représente une coupe transversale schématique d'un mode de réalisation du produit selon l'invention comprenant deux couches de coton ;
  • la figure 2 représente une coupe transversale schématique d'un mode de réalisation du produit selon l'invention comportant trois couches ;
  • la figure 3 représente une coupe transversale schématique d'une variante du produit selon l'invention représenté en figure 2 ;
  • la figure 4 représente- une coupe transversale schématique d'une autre variante du produit selon l'invention représenté en figure 2 ;
  • la figure 5 représente une coupe transversale schématique d'un produit selon l'invention comprenant quatre couches ;
  • la figure 6 représente un produit selon l'invention présentant de plus des faces comportant des stries d'écartement différent ; et
  • la figure 7 représente schématiquement la surface d'une lame perforée d'un dispositif d'hydroliage dans lequel la lame est perforée de trous suivant une séquence.
Other characteristics and advantages of the invention will appear in more detail in the description which follows and with reference to the appended drawings in which:
  • Figure 1 shows a schematic cross section of an embodiment of the product according to the invention comprising two layers of cotton;
  • FIG. 2 represents a schematic cross section of an embodiment of the product according to the invention comprising three layers;
  • 3 shows a schematic cross section of a variant of the product according to the invention shown in Figure 2;
  • 4 shows a schematic cross section of another variant of the product according to the invention shown in Figure 2;
  • Figure 5 shows a schematic cross section of a product according to the invention comprising four layers;
  • FIG. 6 represents a product according to the invention further presenting faces comprising streaks of different spacing; and
  • FIG. 7 schematically represents the surface of a perforated blade of a hydroliaging device in which the blade is perforated with holes in a sequence.

Le produit selon l'invention est constitué à cent pour cent de fibres naturelles de coton et comprend au moins deux couches ou nappes présentant chacune une face extérieure.The product according to the invention consists of one hundred percent natural fibers of cotton and comprises at least two layers or tablecloths each having one side exterior.

La première couche est constituée de fibres fines et douces qui présentent un indice micronaire faible.The first layer consists of fine and soft fibers which have a low micronaire index.

La seconde couche est au contraire constituée de fibres de section plus importante ayant un indice micronaire plus élevé et présentant de ce fait un effet grattant.The second layer, on the contrary, consists of fibers of more cross section. large having a higher micronaire index and therefore having an effect scratching.

Plusieurs facteurs tels que la densité linéaire, la maturité des fibres de coton peuvent varier et influer sur les valeurs de l'indice micronaire.Several factors such as linear density, maturity of cotton fibers may vary and affect the values of the micronaire index.

L'indice micronaire est mesuré au moyen d'un appareil du type SHEFFIELD Micronaire suivant une méthode définie, par exemple la méthode ISO 2403 ou NF G 07-073.The micronaire index is measured using a SHEFFIELD type device Micronaire according to a defined method, for example the ISO 2403 method or NF G 07-073.

Cet indice sert à caractériser la finesse des fibres de coton. Sa mesure se base sur la perméabilité à l'air d'une masse de coton dans certaines conditions spécifiques, selon une échelle arbitraire appelée échelle micronaire, étalonnée à l'aide d'une série de cotons (une dizaine de cotons standards) auxquels on a attribué des indices micronaires par accord international. On mesure la perméabilité à l'air d'un échantillon donné, prélevé dans une couche extérieure du produit selon l'invention (constituant l'éprouvette d'essai), par lecture de la résistance au passage du flux d'air sur l'appareil à flux d'air, sur une échelle graduée en fonction de variations du débit d'air ou de différences de pression. Cette échelle a été préalablement étalonnée avec la série de cotons de référence.This index is used to characterize the fineness of the cotton fibers. Its measurement is based on the air permeability of a cotton mass under certain specific conditions, on an arbitrary scale called a micron scale, calibrated using a series of cottons (ten standard cottons) to which indices have been assigned micronaires by international agreement. We measure the air permeability of a given sample, taken from an outer layer of the product according to the invention (constituting the test specimen), by reading the resistance to the passage of the air flow on the air flow device, on a scale graduated according to variations in flow air or pressure differences. This scale has been previously calibrated with the reference cotton series.

L'appareillage comprend une balance pour la mesure de la masse de l'éprouvette, un appareil à flux d'air permettant la mesure de l'indice micronaire, consistant en un cylindre de compression perforé contenant l'éprouvette d'essai et des dispositifs nécessaires pour la mesure de la perméabilité à l'air de l'éprouvette, tels qu'une pompe à air, des moyens de réglage du flux d'air ou de la pression passant à travers l'éprouvette dans le cylindre de compression, un manomètre pour lire la différence de pression requise et un débit-mètre pour la lecture du débit d'air au travers de l'éprouvette, et si nécessaire une échelle graduée en valeurs d'indice micronaire ou une table fournissant la conversion des lectures en indice micronaire. L'échantillonnage et le prélèvement des éprouvettes se font par exemple conformément aux normes NF G 07-050 et NF G 07-062.The apparatus includes a balance for measuring the mass of the test tube, an air flow device for measuring the micronaire index, consisting of a perforated compression cylinder containing the test specimen and devices necessary for measuring the air permeability of the test piece, such as an air pump, means for adjusting the air flow or the pressure passing to through the test tube in the compression cylinder, a pressure gauge to read the pressure difference required and a flow meter for reading the air flow at across the test tube, and if necessary a scale graduated in index values micronaire or a table providing the conversion of readings into micronaire index. Sampling and sampling of samples is done for example in accordance with standards NF G 07-050 and NF G 07-062.

On détermine ensuite la masse de l'éprouvette. On introduit uniformément et par petites quantités l'éprouvette dans le cylindre de compression et l'on met en place le piston de compression des fibres, que l'on verrouille ensuite. On ouvre l'arrivée d'air à la pression ou au débit approprié et on note la différence de pression sur l'échelle de l'instrument.The mass of the test piece is then determined. We introduce uniformly and in small quantities the test piece in the compression cylinder and one sets up the fiber compression piston, which is then locked. We open the finish air at the appropriate pressure or flow rate and note the pressure difference over the scale of the instrument.

Pour des appareils dont l'échelle est graduée en valeurs d'indice micronaire, on calcule la moyenne des lectures obtenues pour l'ensemble des éprouvettes prélevées sur un même échantillon. Pour des appareils dont l'échelle est graduée en d'autres unités qu'en valeurs d'indice micronaire, on convertit les lectures directes en indices micronaires à partir de la courbe de conversion.For devices whose scale is graduated in micronaire index values, the average of the readings obtained for all the test specimens is calculated taken from the same sample. For devices whose scale is graduated in other units than micron-index values, direct readings are converted to micronaire indices from the conversion curve.

L'indice micronaire représentant la masse moyenne des fibres à l'unité de longueur s'exprime en µg/pouce.The micronaire index representing the average mass of fibers per unit of length is expressed in µg / inch.

La première couche du produit selon l'invention est constituée de fibres de coton ayant un indice micronaire compris entre 2 et 5 µg/pouce, de préférence entre 2,8 et 4,2 µg/pouce.The first layer of the product according to the invention consists of fibers of cotton with a micron index between 2 and 5 µg / inch, preferably between 2.8 and 4.2 µg / inch.

La seconde couche est constituée de fibres de coton ayant un indice micronaire plus élevé compris entre 4 et 10 µg/pouce, de préférenee entre 5 et 8,5 µg/pouce. Pour une différentiation appréciable des deux faces du produit, on estime que l'écart entre les indices micronaires des deux couches extérieures ne doit pas être inférieur à 1 µg/pouce.The second layer consists of cotton fibers having an index higher micronaire between 4 and 10 µg / inch, preferably between 5 and 8.5 µg / inch. For an appreciable differentiation of the two sides of the product, we considers that the difference between the micron indices of the two outer layers should not not be less than 1 µg / inch.

Pour illustrer la valeur d'indice micronaire, on a déterminé sa correspondance en deci-tex qui est également une mesure de la masse d'une fibre ou d'un fil par unité de longueur mais qui est une mesure spécifique des fibres artificielles et synthétiques. Ces dernières ont un profil régulier à la différence des fibres naturelles dont la section est variable et dépend de l'état de maturité de la fibre. On a déterminé sur un échantillon testé, au moyen de la méthode correspondant à la norme ASTM D 3818-79 (Finesse et Indice de maturité des fibres de coton), la finesse des fibres de coton dont l'indice micronaire moyen est de 7,82 µg/pouce, utilisées pour une couche extérieure formant la face grattante. La finesse ou titre des fibres a été estimée à 4,04 dtex, ce qui est inférieure au titre des fibres synthétiques utilisées pour la face grattante des produits d'essuyage décrits dans la demande de brevet européen N° 0 826 811. To illustrate the micronaire index value, we determined its correspondence in deci-tex which is also a measure of the mass of a fiber or a thread per unit in length but which is a specific measure of artificial and synthetic fibers. The latter have a regular profile unlike natural fibers whose cross-section is variable and depends on the state of maturity of the fiber. We determined on a sample tested, using the method corresponding to ASTM standard D 3818-79 (Fineness and maturity index of cotton fibers), the fineness of the fibers cotton with an average micron index of 7.82 µg / inch, used for one layer outer forming the scratching face. The fineness or titer of the fibers has been estimated at 4.04 dtex, which is less than the titer of synthetic fibers used for the face scratching of the wiping products described in the European patent application No. 0 826 811.

Les couches ou nappes de coton formant le produit selon l'invention peuvent être de grammage identique ou différent . Par exemple, la première couche constituée de fibres douces et ayant un indice micronaire faible peut être d'un grammage compris entre 10 et 40 g/m2 et la seconde couche constituée de fibres ayant un effet grattant peut être d'un grammage compris entre 10 et 300 g/m2. Inversement, la couche constituée de fibres douces peut avoir un grammage compris entre 10 et 300 g/m2 et la couche constituée de fibres ayant un effet grattant, un grammage compris entre 10 et 40 g/m2.The cotton layers or tablecloths forming the product according to the invention can be of identical or different grammage. For example, the first layer consisting of soft fibers and having a low micron index may be of a grammage between 10 and 40 g / m 2 and the second layer consisting of fibers having a scraping effect may be of a grammage between 10 and 300 g / m 2 . Conversely, the layer consisting of soft fibers may have a grammage between 10 and 300 g / m 2 and the layer consisting of fibers having a scraping effect, a grammage between 10 and 40 g / m 2 .

Un autre exemple illustré par la figure 1, est un produit à démaquiller 1 comprenant deux couches. La première couche extérieure 2 a un indice micronaire faible et la seconde couche extérieure 3, un indice micronaire élevé. Le grammage de chacune de ces deux couches est compris entre 50 et 250 g/m2.Another example illustrated by FIG. 1 is a product for removing makeup 1 comprising two layers. The first outer layer 2 has a low micron index and the second outer layer 3 has a high micron index. The grammage of each of these two layers is between 50 and 250 g / m 2 .

Le produit peut également comporter plus de deux couches. Une ou plusieurs couches centrales sont alors disposées entre les deux couches extérieures à condition que les indices micronaires des fibres constituant chacune de ces deux couches extérieures soient différents d'une couche à l'autre pour obtenir une face douce et une face plus grattante.The product can also have more than two layers. One or more central layers are then placed between the two outer layers provided that the micronaire indices of the fibers constituting each of these two layers surfaces are different from one layer to another to obtain a soft face and a more scratchy face.

Il est important que les couches extérieures aient un grammage minimum de 8 g/m2, afin d'avoir un effet de différentiation sensible et neutraliser le toucher de la couche centrale ou de l'une des couches extérieures. En effet, l'augmentation du grammage de chaque couche extérieure renforce cette différentiation en évitant une diminution de l'effet recherché engendrée par exemple par les fibres douces d'une couche extérieure au contact de l'autre couche extérieure constituée de fibres dites grattantes et ayant un grammage trop léger ou par une couche centrale d'indice micronaire moyen ou encore par les fibres douces d'une couche centrale disposée juste en dessous d'une couche extérieure constituée de fibres dites grattantes et ayant un grammage trop léger.It is important that the outer layers have a minimum grammage of 8 g / m 2 , in order to have a significant differentiation effect and neutralize the feel of the central layer or of one of the outer layers. In fact, the increase in the grammage of each outer layer reinforces this differentiation by avoiding a reduction in the desired effect generated for example by the soft fibers of an outer layer in contact with the other outer layer made up of so-called scraping fibers and having a too light grammage or by a central layer of average micron index or by the soft fibers of a central layer placed just below an outer layer made up of so-called scraping fibers and having a too light grammage.

Des exemples de composition de produits comprenant plus de deux couches sont illustrés par les figures 2 à 5.Examples of product composition comprising more than two layers are illustrated in Figures 2 to 5.

La figure 2 représente schématiquement en coupe transversale un produit 4 constitué de trois couches de coton. La première couche extérieure 5 a un grammage compris entre 10 et 40 g/m2 et présente un indice micronaire faible. La seconde couche extérieure 6 a également un grammage compris entre 10 et 40 g/m2 mais présente un indice micronaire élevé. La couche centrale 7 située entre les deux couches extérieures a un grammage compris entre 50 et 300 g/m2.Figure 2 shows schematically in cross section a product 4 consisting of three layers of cotton. The first outer layer 5 has a basis weight between 10 and 40 g / m 2 and has a low micron index. The second outer layer 6 also has a grammage between 10 and 40 g / m 2 but has a high micron index. The central layer 7 located between the two outer layers has a basis weight between 50 and 300 g / m 2 .

La figure 3 représente schématiquement en coupe transversale un autre produit 8 comprenant trois couches. Ici, la première couche 9 a un grammage compris entre 10 et 40 g/m2 et présente un indice micronaire faible alors que la seconde couche extérieure 10 a un grammage compris entre 50 et 200 g/m2 pour un indice micronaire plus élevé. La couche centrale 11 disposée entre les deux couches extérieures a un grammage compris entre 50 et 200 g/m2.Figure 3 shows schematically in cross section another product 8 comprising three layers. Here, the first layer 9 has a grammage between 10 and 40 g / m 2 and has a low micronaire index while the second outer layer 10 has a grammage between 50 and 200 g / m 2 for a higher micronaire index. The central layer 11 disposed between the two outer layers has a basis weight between 50 and 200 g / m 2 .

La figure 4 représente en coupe transversale une autre variante du produit selon l'invention. Ce produit 12 est composé de trois couches, une couche extérieure 13 ayant un grammage compris entre 10 et 40 g/m2 et d'indice micronaire élevé et une autre couche extérieure 14 ayant un grammage compris entre 50 et 200 g/m2 et d'indice micronaire faible, entourant une couche centrale 15 ayant un grammage compris entre 50 et 200 g/m2.Figure 4 shows in cross section another variant of the product according to the invention. This product 12 is composed of three layers, an outer layer 13 having a basis weight between 10 and 40 g / m 2 and a high micron index and another outer layer 14 having a basis weight between 50 and 200 g / m 2 and of low micronaire index, surrounding a central layer 15 having a grammage between 50 and 200 g / m 2 .

Enfin, la figure 5 représente toujours en coupe transversale un produit 16 comprenant quatre couches de coton. La première couche extérieure 17 a un indice micronaire faible et la seconde couche extérieure 18 a un indice micronaire élevé, les deux ayant un grammage compris entre 10 et 40 g/m2. Le produit comprend de plus deux couches centrales 19 et 20 ayant chacune un grammage compris entre 50 et 200 g/m2, disposées entre les deux couches extérieures.Finally, Figure 5 always shows in cross section a product 16 comprising four layers of cotton. The first outer layer 17 has a low micron index and the second outer layer 18 has a high micron index, both having a basis weight between 10 and 40 g / m 2 . The product further comprises two central layers 19 and 20 each having a basis weight between 50 and 200 g / m 2 , arranged between the two outer layers.

Le procédé de fabrication des produits selon l'invention, consiste à préparer au moins deux nappes de fibres de coton formant les deux couches extérieures du produit, l'une d'indice micronaire faible, l'autre d'indice micronaire plus élevé. La différence entre les indices micronaires des deux couches extérieures est au moins égale à 1 µg/pouce. Les nappes peuvent être constituées directement à partir de coton hydrophile et blanchi. Elles peuvent aussi être obtenues à partir de coton brut écru, puis traitées chimiquement afin d'obtenir l'hydrophilie et le blanchiment. Après formation des nappes ou nappage, les nappes de coton sont superposées et sont ensuite associées par tout moyen connu tel que des moyens de collage ou des moyens mécaniques comme le calandrage ou l'aiguilletage. Les moyens d'association peuvent encore être hydrauliques. On peut obtenir une bonne association par imprégnation des nappes superposées par tout moyen classique connu tel que le passage dans un bain d'imprégnation, la pulvérisation, le déversement d'une solution. Cette imprégnation doit être associée à un exprimage compactant la nappe et éliminant une partie de la quantité de liquide contenu dans la nappe humide par exemple par calandrage ou passage sur une fente à vide. Un procédé de fabrication et d'association de nappes en continu, est décrit par le brevet européen N° 0 681 621 au nom de la demanderesse. Dans ce dernier cas, l'imprégnation des nappes effectuée au cours des différents traitements chimiques, contribuent à leur association.The process for manufacturing the products according to the invention consists in preparing at least two layers of cotton fibers forming the two outer layers of the product, one with a low micronaire index, the other with a higher micronaire index. The difference between the micron indices of the two outer layers is at least equal to 1 µg / inch. Tablecloths can be made directly from cotton hydrophilic and bleached. They can also be obtained from unbleached raw cotton, then chemically treated to obtain hydrophilicity and bleaching. After cotton tablecloths or tablecloths, the cotton tablecloths are superimposed and are then associated by any known means such as bonding means or means mechanical such as calendering or needling. The means of association can still be hydraulic. A good association can be obtained by impregnating the tablecloths superimposed by any known conventional means such as passing through a bath impregnation, spraying, spilling a solution. This impregnation must be associated with an expression compacting the water table and eliminating part of the quantity of liquid contained in the wet sheet for example by calendering or passage on a vacuum slot. A process for manufacturing and combining tablecloths in continuous, is described by European patent N ° 0 681 621 in the name of the applicant. In the latter case, the impregnation of the layers carried out during the different chemical treatments, contribute to their association.

De préférence, on associe les nappes par hydroliage, c'est à dire au moyen de jets d'eau à haute pression combinés à un exprimage par le vide. Une telle association peut être effectuée sur un dispositif commercialisé par la société ICBT-PERFOJET, Grenoble, France. Cette dernière technique permet à la fois l'association des deux nappes entre-elles et la liaison d'au moins une surface de la nappe diminuant ainsi le peluchage des produits. Preferably, the sheets are combined by hydroletting, that is to say by means of high pressure water jets combined with vacuum expression. Such an association can be performed on a device marketed by the company ICBT-PERFOJET, Grenoble, France. This last technique allows both the association of the two plies between them and the bond of at least one surface of the ply thus reducing the fluffing of products.

Cette étape d'hydroliage, dans le cas d'une fibre écrue qui va être traitée chimiquement, peut intervenir juste après l'étape d'imprégnation de la nappe comme cela est décrit dans la demande de brevet européen n° 0 735 175. Elle peut aussi être placée en phase finale de rinçage suivant le brevet européen n° 0 805 S88 au nom de la demanderesse.This hydroliage step, in the case of an unbleached fiber which will be treated chemically, can intervene just after the impregnation stage of the water table as this is described in European patent application No. 0 735 175. It can also be placed in the final rinsing phase according to European Patent No. 0 805 S88 in the name of the plaintiff.

Des produits en formats sont ensuite découpés dans les nappes ainsi associées par tout moyen classique.Products in formats are then cut from the tablecloths thus associated by any conventional means.

Un des avantages du produit selon l'invention sur le plan de la fabrication est sa composition cent pour cent en fibres de coton. En effet, ceci permet de recycler facilement les déchets issus de la découpe en utilisant les chutes pour la composition de nouveaux produits.One of the manufacturing advantages of the product according to the invention is its one hundred percent cotton fiber composition. Indeed, this allows to recycle easily waste from cutting using scraps for composition new products.

En prenant et en touchant le produit, l'utilisatrice peut différencier la face douce de la face la plus grattante.By taking and touching the product, the user can differentiate the face soft from the most itchy side.

Afin d'accentuer cette différence, on peut pulvériser un agent adoucissant uniquement sur la face douce du produit. De ce fait, la composition de la première couche extérieure de coton ayant un faible indice micronaire comprendra un agent adoucissant réparti essentiellement en surface de cette couche.In order to accentuate this difference, a softening agent can be sprayed only on the soft side of the product. As a result, the composition of the first outer layer of cotton with low micron index will include an agent softener distributed mainly on the surface of this layer.

En complément, il est possible de prévoir une différentiation visuelle du produit par différents moyens.In addition, it is possible to provide a visual differentiation of the produced by different means.

On peut par exemple teinter au préalable les couches extérieures de différentes couleurs ou n'en teinter qu'une et garder l'autre blanche.We can for example tint the outer layers of different colors or tint only one and keep the other white.

On peut encore marquer l'une des faces extérieures par marquage en formant une empreinte par pression. Des procédés utilisant des cylindres gravés ou calandres le cas échéant chauffées ou encore des toiles marqueuses, peuvent être utilisés.One can still mark one of the outer faces by marking by forming a pressure impression. Processes using engraved or calendered cylinders if necessary heated or even marking fabrics, can be used.

De préférence, on utilisera la technique d'hydroliage déjà utilisée pour associer les nappes et éviter le peluchage, pour différencier visuellement les deux faces du produit.Preferably, the hydroliage technique already used will be used to combine the tablecloths and avoid linting, to visually differentiate the two sides of the product.

Ceci permet au moyen d'une seule technique de remplir trois fonctions différentes.This allows one function to perform three functions different.

Dans ce cas, les différentes couches sont préparées, puis superposées ; l'ensemble est imprégné. Les deux couches extérieures sont ensuite hydroliées l'une après l'autre sur des toiles sans fin ou des cylindres.In this case, the different layers are prepared, then superimposed; the whole is impregnated. The two outer layers are then hydroliated one after another on endless canvases or cylinders.

Le procédé d'hydroliage permet de traiter différemment les deux faces. En effet, les jets d'eau à haute pression utilisés pour entrelacer les fibres des couches extérieures, marquent la surface de ces couches de stries visibles à l'oeil nu, dont l'écartement correspond à la distance entre les axes des jets. Plus précisément, le dispositif d'hydroliage comprend une pompe à haute pression alimentant un injecteur placé transversalement au défilement de la nappe ou couche de fibres, sur toute sa largeur. L'injecteur consiste en un volume d'eau sous pression, fermé par une lame d'acier qui est perforée de trous calibrés produisant des jets sous la forme de fines aiguilles d'eau à haute pression projetées perpendiculairement à la surface de la nappe de fibres. Ces fins jets emmêlent les fibres. Les trous perforés dans cette lame d'acier (communément dénommée "strip") ont un diamètre allant de 100 à 200 µm de préférence 120 à 140 µm et sont régulièrement espacés. La distance entre les axes de deux trous consécutifs de la lame d'acier est en général comprise entre 0,5 et 3 mm, le plus souvent entre 0,6 et 1 mm. La position de l'injecteur étant fixe et la nappe ou couche de coton défilant sous ce dernier, on observe sur la surface de la couche, une série de stries ou sillons parallèles correspondant au passage sous les jets.The hydroliage process allows the two sides to be treated differently. In effect, the high pressure water jets used to intertwine the fibers of the layers outer, mark the surface of these streak layers visible to the naked eye, including the spacing corresponds to the distance between the axes of the jets. More specifically, the hydroliaging device includes a high pressure pump supplying an injector placed transversely to the running of the sheet or layer of fibers, over its entire width. The injector consists of a volume of pressurized water, closed by a blade of steel which is perforated with calibrated holes producing jets in the form of fines high pressure water needles projected perpendicular to the surface of the water table fiber. These fine jets entangle the fibers. The holes punched in this steel blade (commonly called "strip") have a diameter ranging from 100 to 200 µm preferably 120 to 140 µm and are regularly spaced. The distance between the axes of two consecutive holes of the steel blade is generally between 0.5 and 3 mm, the more often between 0.6 and 1 mm. The position of the injector being fixed and the water table or cotton layer running under it, we observe on the surface of the layer, a series of parallel ridges or grooves corresponding to the passage under the jets.

Il est ainsi possible de modifier la distance entre les axes des trous de la lame d'un dispositif d'hydroliage utilisé pour le traitement d'une couche extérieure par rapport à l'autre dispositif utilisé pour le traitement de l'autre couche.It is thus possible to modify the distance between the axes of the blade holes a hydroletting device used for the treatment of an outer layer by compared to the other device used for processing the other layer.

Afin d'obtenir un aspect différent entre les deux faces du produit, on peut par exemple utiliser pour une face, un dispositif d'hydroliage dont la lame est perforée avec une distance importante entre les trous de 1,2 à 3 mm, de préférence de 1,6 à 2,5 mm, et pour l'autre face, un dispositif dont la lame est perforée avec une distance entre les trous comprise entre 0,4 et 1,2 mm, de préférence entre 0,5 et 0,8 mm. Les stries ou sillons ayant un écartement de 1,2 à 3 mm seront plus visibles sur la face ainsi traitée que les stries de l'autre face.In order to obtain a different appearance between the two faces of the product, it is possible to example use for a face, a hydroliage device whose blade is perforated with a significant distance between the holes from 1.2 to 3 mm, preferably from 1.6 to 2.5 mm, and for the other side, a device whose blade is perforated with a distance between the holes between 0.4 and 1.2 mm, preferably between 0.5 and 0.8 mm. The streaks or grooves with a spacing of 1.2 to 3 mm will be more visible on the face as treated as the streaks on the other side.

On obtient alors une face finement striée et l'autre plus grossièrement.One then obtains a finely striated face and the other more coarsely.

Un exemple de produit présentant cette différentiation est illustrée par la figure 6.An example of a product exhibiting this differentiation is illustrated by the figure 6.

Ce produit 21 comprend une première couche extérieure 22 d'un indice micronaire de 3,4 µg/pouce et d'un grammage de 25 g/m2, une seconde couche extérieure 23 d'un indice micronaire de 6,8 µg/pouce et d'un grammage de 25 g/m2 et une couche centrale 24 de 200 g/m2.This product 21 includes a first outer layer 22 with a micron index of 3.4 µg / inch and a basis weight of 25 g / m 2 , a second outer layer 23 with a micron index of 6.8 µg / inch and a grammage of 25 g / m 2 and a central layer 24 of 200 g / m 2 .

La face 25 de la couche extérieure 22 présente des stries 26 ayant un écartement d1 de 0,6 mm et la face 27 de la couche extérieure 23 présente des stries 28 ayant un écartement d2 de 2 mm.The face 25 of the outer layer 22 has grooves 26 having a spacing d 1 of 0.6 mm and the face 27 of the outer layer 23 has grooves 28 having a spacing d 2 of 2 mm.

L'utilisatrice est ainsi guidée pour discerner la face douce de la face plus grattante du produit afin d'utiliser chacune des faces du produit dans sa bonne destination : maquillage et/ou démaquillage.The user is thus guided to discern the soft face from the more scratching the product in order to use each side of the product in its proper destination: make-up and / or make-up removal.

Cependant, l'augmentation de la distance entre les trous de la lame perforée a pour conséquence directe une diminution du nombre de trous et donc un apport d'énergie plus faible sur la nappe qu'il n'est pas toujours possible de compenser par une augmentation de la pression d'eau dans l'injecteur. Cette diminution de l'énergie transmise à la nappe peut provoquer une augmentation du peluchage par rapport au résultat obtenu sur une nappe ayant subi une étape d'hydroliage au moyen d'une lame perforée dont la distance entre les trous est faible et uniforme. Afin de limiter cette augmentation du peluchage, on peut utiliser une lame perforée de trous selon une séquence, par exemple des groupes de 6 trous espacés de 0,6 mm, chaque groupe étant espacé du suivant de 1,8 mm. On obtient ainsi une face où les stries sont bien visibles car elles apparaissent avec un écartement large : le pas est important de l'ordre de 4.8 mm. L'augmentation du peluchage est ainsi limitée grâce à une fréquence moyenne de trous supérieure à celle d'une lame régulièrement perforée par exemple à une distance de 1,8 mm. Dans cet exemple de séquence, le nombre moyen de trous par mètre est de 1250, alors que dans le cas de trous régulièrement espacés à une distance de 1,8 mm, ce nombre est de 555. Pour un diamètre de trou et une pression donnés, on pourra donc apporter plus du double de l'énergie avec la lame perforée selon cette séquence, par rapport à la lame régulièrement perforée à une distance de 1,8 mm.However, the increased distance between the holes in the perforated blade has as a direct consequence a reduction in the number of holes and therefore a contribution of lower energy on the water table which it is not always possible to compensate by an increase in the water pressure in the injector. This decrease in energy transmitted to the tablecloth can cause an increase in lint compared to result obtained on a sheet having undergone a hydroliage step by means of a blade perforated, the distance between the holes is small and uniform. In order to limit this increased linting, you can use a perforated blade with holes sequence, for example groups of 6 holes spaced 0.6 mm apart, each group being spaced next 1.8 mm. We thus obtain a face where the streaks are well visible because they appear with a wide spacing: the pitch is important to around 4.8 mm. The increase in linting is thus limited thanks to a average frequency of holes higher than that of a blade regularly perforated by example at a distance of 1.8 mm. In this example sequence, the average number number of holes per meter is 1250, whereas in the case of regularly spaced holes at a distance of 1.8 mm, this number is 555. For a hole diameter and a pressure given, we can therefore bring more than double the energy with the blade perforated according to this sequence, compared to the blade regularly perforated at a distance of 1.8 mm.

La figure 7 illustre une lame perforée de trous selon une séquence, ici par groupe de 5 trous espacés d'une distance e1 égale à 0,6 mm, chaque séquence ou groupe de trous étant espacé de la suivante d'une distance e2 égale à 1,8 mm.FIG. 7 illustrates a blade perforated with holes according to a sequence, here by group of 5 holes spaced by a distance e 1 equal to 0.6 mm, each sequence or group of holes being spaced from the next by a distance e 2 equal to 1.8 mm.

Ceci se traduit au niveau du produit par une première couche extérieure qui comporte des stries avec un certain écartement compris entre 0,4 et 1,2 mm (ici 0,6 mm) et une seconde couche extérieure qui comporte des stries selon une séquence comprenant plusieurs groupes de stries, chaque groupe de stries ayant un certain écartement entre les stries, cet écartement étant compris entre 0,4 et 1,2 mm (ici 0,6 mm) et chaque groupe étant espacé du groupe suivant d'une distance comprise entre 1,2 et 4 mm (ici 1,8 mm).This results in the product level by a first outer layer which has ridges with a certain distance between 0.4 and 1.2 mm (here 0.6 mm) and a second outer layer which has streaks in a sequence comprising several groups of streaks, each group of streaks having a certain spacing between the streaks, this spacing being between 0.4 and 1.2 mm (here 0.6 mm) and each group being spaced from the next group by a distance between 1.2 and 4 mm (here 1.8 mm).

L'utilisatrice dispose ainsi d'un produit de coton dont les deux faces se distinguent, qui garde ses qualités de résistance mécanique, résistance au peluchage, cohésion (résistance au délaminage) et douceur même si l'une des faces a un effet plus grattant que l'autre pour le nettoyage.The user thus has a cotton product whose two sides are distinguish, which retains its qualities of mechanical resistance, lint resistance, cohesion (resistance to delamination) and softness even if one side has an effect more scraping than the other for cleaning.

Claims (11)

  1. A hydrophilic cotton product constituted of one hundred percent cotton fibers comprising at least a first outer layer and a second outer layer, characterized in that the first layer is constituted of fine fibers presenting a low micronaire value between 2 and 5 µg/inch forming a soft surface and the second layer is constituted of fibers presenting a higher micronaire value between 4 and 10 µg/inch forming a rough surface, the difference between the micronaire values of the two outer layers being at least 1 µg/inch.
  2. The product according to claim 1, characterized in that the first layer presents a micronaire value between 2.8 and 4.2 µg/inch and the second layer presents a micronaire value between 5 and 8.5 µg/inch.
  3. The product according to one of the preceding claims, characterized in that the outer layers have a base weight of at least 8 g/m2.
  4. The product according to one of the preceding claims, characterized in that it furthermore comprises at least one central layer disposed between the two outer layers.
  5. The product according to one of the preceding claims, characterized in that the outer layers are comprised of a striated surface, the spacing between the striations of one of the outer layers being less than the spacing between the striations of the other layer.
  6. The product according to claim 5, characterized in that the spacing between the striations of the first outer layer is between 0.4 and 1.2 mm and the spacing between the striations of the second outer layer is between 1.2 and 3 mm.
  7. The product according to claim 5, characterized in that the first outer layer is comprised of striations, with a certain spacing, this spacing being between 0.4 and 1.2 mm and the second outer layer is comprised of striations according to a sequence comprising several groups of striations, each group of striations having a certain spacing between the striations, this spacing being between 0.4 and 1.2 mm and each group being spaced from the following group by a distance between 1.2 and 4 mm.
  8. The product according to one of the preceding claims, characterized in that at least one of the outer layers is comprised of an impression.
  9. The product according to one of the preceding claims, characterized in that the first outer layer, of low micronaire value, comprises a softening agent distributed mainly on the surface of this layer.
  10. A process for manufacturing a hydrophilic cotton product according to one of claims 5 to 7, characterized in that each outer layer is hydrolinked by means of jets of water in which the axes are spaced one from the others by a given distance, this distance being different between the jets utilized for the first layer and the jets utilized for the second layer in such a manner as to obtain outer layers comprising surfaces having striations with a different spacing.
  11. An utilization of the product according to one of the claims 1 to 9, for putting on and/or taking off makeup.
EP00951582A 1999-06-16 2000-06-13 Hydrophilic cotton product comprising a soft surface and a scraping surface Expired - Lifetime EP1189531B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01121057A EP1167605B1 (en) 1999-06-16 2000-06-13 Process and device for manufacturing an hydrophilic cotton article

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9907612A FR2795100B1 (en) 1999-06-16 1999-06-16 HYDROPHILIC COTTON PRODUCT WITH A SOFT FACE AND A SCRATCHING FACE
FR9907612 1999-06-16
PCT/FR2000/001635 WO2000076384A1 (en) 1999-06-16 2000-06-13 Hydrophilic cotton product comprising a soft surface and a scraping surface

Related Child Applications (1)

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EP01121057A Division EP1167605B1 (en) 1999-06-16 2000-06-13 Process and device for manufacturing an hydrophilic cotton article

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EP1189531A1 EP1189531A1 (en) 2002-03-27
EP1189531B1 true EP1189531B1 (en) 2003-09-03

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EP01121057A Expired - Lifetime EP1167605B1 (en) 1999-06-16 2000-06-13 Process and device for manufacturing an hydrophilic cotton article
EP00951582A Expired - Lifetime EP1189531B1 (en) 1999-06-16 2000-06-13 Hydrophilic cotton product comprising a soft surface and a scraping surface

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EP01121057A Expired - Lifetime EP1167605B1 (en) 1999-06-16 2000-06-13 Process and device for manufacturing an hydrophilic cotton article

Country Status (9)

Country Link
US (1) US6998360B1 (en)
EP (2) EP1167605B1 (en)
AT (2) ATE397112T1 (en)
DE (2) DE60005004T2 (en)
ES (2) ES2309025T3 (en)
FR (1) FR2795100B1 (en)
PL (1) PL196841B1 (en)
PT (1) PT1189531E (en)
WO (1) WO2000076384A1 (en)

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WO2007053204A1 (en) * 2005-11-01 2007-05-10 Kimberly-Clark Worldwide, Inc. Two-sided personal-care appliance for health, hygiene, and/or environmental application(s); and method of making said two-sided personal-care appliance

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EP1424418A1 (en) * 2002-11-27 2004-06-02 Polyfelt Gesellschaft m.b.H. Structured geotextiles and process for their production
FR2856414B1 (en) * 2003-06-18 2005-09-23 Georgia Pacific France METHOD AND DEVICE FOR HYDROLING A FIBROUS CELLULOSIC PRODUCT TABLE
FR2860524B1 (en) 2003-10-02 2006-01-27 Georgia Pacific France ARTICLE FOR SKIN CARE
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FR2882068B1 (en) 2005-02-14 2011-04-08 Georgia Pacific France IMPREGNE FIBROUS BUFFER
DE102008060327A1 (en) * 2008-12-03 2010-06-10 Fleissner Gmbh Method and device for producing a nonwoven product
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FR2942133B1 (en) 2009-02-13 2012-12-14 Georgia Pacific France ARTICLE FOR CLEANING THE SKIN
US8167490B2 (en) 2009-04-22 2012-05-01 Reynolds Consumer Products Inc. Multilayer stretchy drawstring
FR2978460B1 (en) * 2011-07-28 2014-07-11 Georgia Pacific France FIBROUS ABSORBENT PRODUCT CONTAINING AT LEAST 50% HYDROPHILIC CELLULOSIC FIBERS COMPRISING AT LEAST TWO LAYERS ONE OF WHICH IS HYDROLIATED
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DE10361339B4 (en) * 2003-12-18 2015-09-03 Paul Hartmann Ag Cosmetic cotton pad and method of making a cosmetic cotton pad
WO2007053204A1 (en) * 2005-11-01 2007-05-10 Kimberly-Clark Worldwide, Inc. Two-sided personal-care appliance for health, hygiene, and/or environmental application(s); and method of making said two-sided personal-care appliance

Also Published As

Publication number Publication date
PL357249A1 (en) 2004-07-26
FR2795100A1 (en) 2000-12-22
EP1189531A1 (en) 2002-03-27
ES2309025T3 (en) 2008-12-16
EP1167605A1 (en) 2002-01-02
EP1167605B1 (en) 2008-05-28
ATE248551T1 (en) 2003-09-15
ATE397112T1 (en) 2008-06-15
FR2795100B1 (en) 2001-09-14
WO2000076384A1 (en) 2000-12-21
US6998360B1 (en) 2006-02-14
DE60039045D1 (en) 2008-07-10
DE60005004D1 (en) 2003-10-09
PL196841B1 (en) 2008-02-29
ES2204671T3 (en) 2004-05-01
DE60005004T2 (en) 2004-07-08
PT1189531E (en) 2004-02-27

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