EP0826811B1 - Matériau complexe nontisse absorbant comportant une face souple et une face rugueuse, et procédé pour son obtention - Google Patents
Matériau complexe nontisse absorbant comportant une face souple et une face rugueuse, et procédé pour son obtention Download PDFInfo
- Publication number
- EP0826811B1 EP0826811B1 EP19970420136 EP97420136A EP0826811B1 EP 0826811 B1 EP0826811 B1 EP 0826811B1 EP 19970420136 EP19970420136 EP 19970420136 EP 97420136 A EP97420136 A EP 97420136A EP 0826811 B1 EP0826811 B1 EP 0826811B1
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- Prior art keywords
- fibres
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Classifications
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
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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
- D04H1/44—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
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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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/549—Polyamides
-
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/55—Polyesters
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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
- D04H13/00—Other non-woven fabrics
Definitions
- the thickness can be of the order of a few tenths of a millimeter when making a wiping "cloth” to reach a centimeter or even more for articles of the type "sponge", the grammage being able to vary from 30 g / m2 to 200 g / m2, or even more.
- one of the three techniques for obtaining nonwovens is used, namely the technique so-called “dry process” which consists of making a veil of fibers mechanically or aerodynamically, using conventional textile machines such as openers, carding machines, or the so-called “wet” technique, technique derived from conventional papermaking, which consists in making a suspension of fibers which are received in the form of a sheet, or the so-called “melted” technique of producing a web of continuous filaments synthetics randomly oriented with respect to each other, directly at the outlet of the extrusion dies of said filaments.
- dry process which consists of making a veil of fibers mechanically or aerodynamically, using conventional textile machines such as openers, carding machines, or the so-called “wet” technique, technique derived from conventional papermaking, which consists in making a suspension of fibers which are received in the form of a sheet, or the so-called “melted” technique of producing a web of continuous filaments synthetics randomly oriented with respect to each other, directly at the outlet of
- the complex obtained being subjected to a treatment to merge the free ends of the fibers synthetics of the first layer making the latter abrasive by the formation of droplets at the place of the fusion.
- the respective grammages of the two layers are adapted according to the applications, these grammages being able go from 15 to 200 g / m2 for the second layer and from 10 to 70 g / m2 for the first layer.
- the invention also relates to a method for producing such a product, said method consisting in make two layers of elementary fibers, the two layers being linked together downstream of the formation zone by a needling treatment by jet of fluid acting at least against the surface of the sheet comprising the fibers hot-melt intended to constitute the "scraping" side of the complex article formed.
- the nonwoven complex formed is then dried and receiving additional heat treatment allowing partial fusion of the ends chemical fibers from the first layer that remain linked to the basic nonwoven complex.
- a conventional machine for obtaining of a wet nonwoven for example a machine of the Hydroformer type from the company VOITH, at the outlet of which is arranged a hydraulic binding assembly, also of known type, for example a processing machine by pressurized water jet needles of the "Jet Lace" type from ICBT-PERFOJET, this machine being adjusted so that the jets act preferentially on the face of the multilayer material constituted by the sheet which contains the hot-melt synthetic fibers, which makes it possible to redirect said fibers in the Z direction of the sheet and sort of "file” them inside it.
- a conventional machine for obtaining of a wet nonwoven for example a machine of the Hydroformer type from the company VOITH, at the outlet of which is arranged a hydraulic binding assembly, also of known type, for example a processing machine by pressurized water jet needles of the "Jet Lace" type from ICBT-PERFOJET, this machine being adjusted so that the jets act preferentially on the face of the multi
- the second layer by the dry route, the association being carried out at the exit of the formation of this layer by relating to its surface, on the side where the action of the jets of fluid will be exerted interlacing, the first veil made wet or dry.
- the two overlapping layers are preferably rewetted before subjecting them to the action of the entanglement jets.
- the nonwoven complex formed is dried and then optionally impregnated with chemical binders.
- acrylic base possibly copolymerized
- ethylene-vinyl-acetate polyurethane ... as well as various additives allowing to reinforce properties specific such as hydrophilicity, flexibility.
- this machine At the outlet of this machine, there is an installation interlacing by fluid jets sold by the company ICBT-PERFOJET under the name JET-LACE, this machine comprising four rows of injectors allowing the complex to be subjected to the action of jets / needles obtained from water under pressure included between 10 bars and 125 bars.
- the number of jets / needles per meter of width of each row can vary from 800 to 1700 and is advantageously around 1000, the diameter of each injector orifice being generally between 100 and 140 microns, but possibly reaching a value of 300 microns.
- the two tablecloths are superimposed so that the tablecloth with polypropylene fibers are at the top and, before drying, the complex is subjected to an entangling action by water jets, the four successive series of jets being obtained from of water under increasing pressure ranging from 23 bars for the first, 27 bars for the second, 55 bars for the third and also 55 bars for the fourth.
- the action of the water jets changes the initial position of the fibers fuses and stiff which, originally, are located perfectly in the plane of the sheet, said fibers being re-oriented along the Z axis of said sheet and their extremity rising under the effect of the knots of entanglement, or even for the longest fibers forming loops between the tangles.
- the complex is then dried and subjected to treatment inside a tunnel brought to 400 ° C (the temperature of burner in the case where the fused fibers are of the polypropylene type).
- This heat treatment causes a partial melting of the fibers of polypropylene visible on the surface of the tablecloth making it abrasive by the formation of droplets at the point of fusion.
- the effective temperature inside the oven is 190 ° C, i.e. higher than the melting point of polypropylene
- the passage speed of the sheet inside the oven is such that the fibers only melt partially, other synthetic fibers (excluding any fibers binders) entering the composition of the complex being not affected by this heat treatment, thus making it possible to preserve the flexibility of the article.
- the speed of passage of the sheet at the interior of the furnace is of the order of 90 m / min, the said furnace having a "effective" length of six meters, the nonwoven being previously preheated to a temperature of 140 ° C.
- a sheet weighing 40 g / m2 is obtained having a flexible and absorbent face and the other side of which has abrasive properties formed by the visible ends of the fibers polypropylene.
- this sheet can be used either as is to receive additional treatment online with a binder, in this case a polymer emulsion acrylic / vinyl acetate deposited at a rate of 10 g / m2.
- thermobonding fibers As indicated above.
- Such products are particularly suitable for carrying out semi-scouring or very absorbent wiping products, but could also be used in other areas, for example in the food industry, for solvent media, bench tops laboratories ...
- a complex material according to the invention is produced by combining on the one hand a nonwoven obtained by the wet method, and on the other hand, a nonwoven obtained by dry process.
- the nonwoven obtained by wet process made on the same machine than the previous example, has only one jet, forming in the final product about 50% of the total mass of the fibers.
- This first layer is added, before treatment by the set of fluid jets on a card web, constituting 50% of the total weight of fibers, card web made of polyester fibers having a title of 1.7 dtex, curly, and a 38 mm cut.
- This card veil is preferably slightly tangled with water jets beforehand ensure its cohesion and facilitate its handling.
- the card web is located below the web produced humid, the whole being rewetted before being subjected to the action of entanglement jets made in the same manner as in Example 1.
- the product is, as in the previous example, subjected to a heat treatment resulting in a partial melting of polypropylene fibers, making the surface where they are present abrasive.
- a complex product is obtained, the characteristics of which are grouped in the table below.
- Such a product which has a flexible face formed by the fibers polyester and a rough side is particularly suitable to be used as a variety of wiping materials in a manner similar to those cited in Example 1, and which have a high flexibility innovation.
- surfactants such as alkyl -sulfonates commonly used in dishwashing liquids, these products being either added alone, or mixed with a binder. It could also be considered to add softeners, degreasers, insecticides, bactericides, flame retardants, solvents.
- polypropylene is particularly suitable for making the face scratching the article
- fibers of polyethylene or possibly other fibers such as fibers polyvinyl chloride derivatives whose melting point allows perform heat treatment without deteriorating the characteristics of fibers used in the constitution of the complex.
- the choice of polypropylene as a material particularly suitable for placing work of the invention is explained by the fact, that at the date of this demand, this is the product with the best ratio price / properties (solvent resistance, stiffness, abrasiveness, skin contact and food).
- the ply preferably constituting the flexible layer absorbent will consist of fibers selected according to characteristics primarily sought.
- fibers selected according to characteristics primarily sought.
- viscose or cotton if you are considering an item with good tear resistance, preferably use fiber polyamide and, if you want to improve the touch, you will use preferably acetate or cellulose fibers (artificial silk).
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
- Artificial Filaments (AREA)
Description
- la première nappe est constituée pour tout ou partie de fibres synthétiques thermofusibles sélectionnées de préférence dans la classe des polyoléfines ; avantageusement, cette nappe est constituée d'un mélange de fibres cellulosiques ou autres et de fibres synthétiques thermofusibles, le pourcentage de ces dernières dans la nappe étant supérieur à 30 % et de préférence supérieur à 50 % ;
- la seconde nappe est, quant à elle, constituée de fibres naturelles et/ou artificielles et/ou synthétiques ayant une température de fusion plus élevée que ces dernières ;
- l'association des nappes élémentaires est réalisée en les soumettant à un traitement permettant de ré-orienter les fibres synthétiques de la première nappe pour que, d'une part, elles soient intimement liées dans la structure de la seconde nappe et, d'autre part, présentent des extrémités libres ou bouclettes apparentes sur l'une des faces extérieures du complexe formé.
- par exemple dans le cas où les deux nappes élémentaires sont obtenues selon la technique dite par voie humide ou papetière, leur réalisation sera faite sur une machine permettant d'obtenir et de superposer deux jets correspondant chacun à l'une des nappes ; dans ce cas, la superposition se fera en ligne, avant même séchage, et on procédera au complexage par l'action de jets d'eau sous pression ;
- dans le cas où les deux nappes élémentaires sont obtenues selon la technique dite par sèche, dite aussi textile, elles seront également superposées et leur liaison sera obtenue par un traitement d'enchevêtrement par jets d'eau ;
- enfin, dans le cas où l'on réalise un complexe à partir de deux nappes obtenues par des techniques différentes, il sera possible de prélier légèrement l'une ou l'autre des nappes par un enchevêtrement obtenu au moyen de jets d'eau en évitant des liaisons bloquantes de type chimique ou thermique ; les deux nappes sont ensuite superposées et liées par enchevêtrement par jets d'eau.
- les fibres synthétiques entrant dans la composition de la première nappe,
sont de préférence des fibres de polypropylène ou de polyéthylène :
- dont le titre est supérieur 5 dtex, la limite haute étant directement en relation avec la pression du fluide d'enchevêtrement da manière à assurer la solidarité des fibres avec le reste de la nappe ; la limite supérieure des fibres sera fonction des disponibilités commerciales qui, à ce jour, proposent des fibres ayant un titre de 17 dtex;
- dont la longueur est supérieure à 5 mm, la limite supérieure dépendant essentiellement de la technique de fabrication ; ainsi, un titre plus fin entraíne l'utilisation de fibres plus courtes et, la technique par voie humide nécessite une coupe plus courte que la technique par voie sèche ;
- dont la surface est la moins ronde possible ; ainsi, on utilisera de préférence des fibres multilobées, fibrillables ou à section aplatie, qui sont beaucoup plus réceptives à l'action des jets du fluide d'enchevêtrement;
- s'il est préférable d'utiliser des fibres de polyoléfines ayant comme caractéristique d'avoir une densité inférieure à 1, il peut cependant être envisagé d'utiliser d'autres types de fibres, par exemple des fibres constituées d'un copolymère de chlorure de vinyle (85 %) et d'acétate de vinyle (15 %) dont la température de fusion est de l'ordre de 160 °C avec une densité de 1,37 g/cm3 ;
- comme fibres naturelles et/ou artificielles, on peut utiliser tout type de fibres permettant d'obtenir un caractère absorbant, tel que pâte de bois, coton, linters, viscose ; dans le cas d'une fibre chimique telle que la viscose, elle sera éventuellement de section multilobée ou fibrillable de manière à optimiser l'action des jets de fluide;
- si l'on introduit des fibres synthétiques de structure dans la seconde nappe, celles-ci auront un point de fusion supérieur à celles entrant dans la composition de la première nappe ; on utilisera par exemple des fibres de polyester ou de polyamide 6.6 (de préférence à des polyamides 6), éventuellement frisées;
- il est possible d'ajouter éventuellement dans l'une ou l'autre des nappes un certain pourcentage de fibres dites liantes, par exemple fibres bi-componantes, dont tout ou partie de la fibre flue sur les fibres voisines lors d'un traitement thermique permettant de réaliser un "collage" rendant les fibres solidaires ; dans un tel cas, le point de fusion de la partie liante de ces fibres liantes sera inférieur au point de fusion des fibres de structure précédemment citée, mais il peut cependant être inférieur ou supérieur à celui des fibres de la première nappe destinées à apporter l'effet "grattant";
- après superposition des deux nappes, le complexe résultant reçoit un traitement thermique destiné, d'une part, à révéler la pouvoir liant des fibres liantes qui ont été éventuellement introduites, et d'autre part et surtout, à fusionner les extrémités libres des fibres synthétiques de la première nappe de manière à amplifier l'effet "grattant";
- avant ou après traitement thermique, il est éventuellement possible de réaliser des traitements additionnels mécaniques,
tels que par exemple crêpage ou utilisation d'un appareil de type Micrex destiné à assouplir le produit
ou chimiques, tels que :
- additions d'émulsions polymères de type latex destinées à renforcer mécaniquement le produit,
- addition d'assouplissants chimiques,
- additions d'agents hydrophiles,
- imprégnation de liquides dégraissants (type liquide vaisselle), protecteurs pour la peau, détachants...
- pour la couche supérieure qui sera ultérieurement soumise à
l'action préférentielle des jets d'aiguilletage, et qui constitue globalement
23 % de la masse fibreuse totale du complexe après formation, une
suspension d'un mélange comportant :
- 50 % de fibres de polypropylène (titre 6,7 dtex, coupe 6 mm, section ronde) ; ces fibres sont teintées dans la masse, ce qui permet, dans le produit final, de pouvoir identifier visuellement les différentes couches du produit fini.
- 50 % de fibres cellulosiques constituées de fibres papetières longues obtenues à partir de pin sylvestre.
- pour la couche inférieure formant la seconde nappe souple et
avantageusement absorbante, et qui constitue globalement 77 % de
la masse totale fibreuse dans le complexe final, une suspension
comprenant :
- 67 % de fibres cellulosiques longues obtenues à partir de pin sylvestre,
- 33 % de fibres de polyester titre 1,7 dtex - coupe 18 mm - section ronde.
SANS IMPREGNATION | AVEC IMPREGNATION | |
Grammage (g/m2) | 40,3 | 50,7 |
Epaisseur (microns sous 100 kPa) | 268 | 261 |
Perméabilité(L/m2/S sous 196 Pa) | 1335 | 1103 |
Rupture sens long (N/M) | 470 | 1439 |
Rupture travers (N/M) | 170 | 470 |
Allongement sens long (%) | 2,5 | 12,3 |
Allongement travers (%) | 5,5 | 30,0 |
Rupture humide sens (N/M) | 109 | 952 |
Rupture humide travers (N/M) | 48 | 286 |
Déchirure sens long (cN) | 118 | 525 |
Déchirure travers (cN) | 198 | 1152 |
Rigidité sens long (cN Handle O meter) | 45 | 80 |
Rigidité travers (cN Handle O meter) | 17 | 27 |
Capacité d'absosrption (%) | 693 | 477 |
distance entre machoirs : 127 mm
vitesse de traction : 25,4 mm/min
distance entre machoirs : 127 mm vitesse de traction : 25,4 mm/min détection à 75 % de la rupture maximum
- des essuyages imprégnés de liquide vaisselle pour vaisselle à usage unique (camping..),
- des essuie-mains imprégnés d'agents dégraissants et adoucissants pour travailleurs manuels (garages..),
- des essuie-vitres imprégnés d'un liquide adequat pour les véhicules (insectes écrasés, déjections d'oiseaux), le domestique .. ,
- des essuyages pour bricoleurs (nettoyage de balustrades, dépoussiérage en extérieur..).
- 33 % de fibres polypropylène, de titre 6,7 dtex, coupe 6 mm, section ronde ;
- 67 % de cellulose (pâte de bois) en fibres longues (résineux).
Grammage | 68,4 g/m2 |
Epaisseur | 255 microns sous 100 kPa |
Perméabilité | 1160 L/m2/S sous 196 Pa |
Rupture sens long | 1920 N/M |
Rupture travers | 690 N/M |
Allongement sens long | 29 % |
Allongement travers | 30 % |
Rupture humide sens long | 1600 N/M |
Rupture humide travers | 550 N/M |
Déchirure sens long | 1330 cN |
Déchirure travers | 2810 cN |
Rigidité sens long | 31 cN (Handle-O-Meter) |
Rigidité travers | 5 cN (" " " ) |
Capacité d'absorption | 402 % |
Claims (11)
- Matériau complexe non tissé absorbant constitué d'au moins deux nappes fibreuses superposées, liées entre elles par interpénétration des fibres dans le sens de l'épaisseur, ou :la première nappe est constituée pour tout ou partie de fibres synthétiques thermofusibles sélectionnées de préférence dans la classe des polyoléfinesla seconde nappe est, quant à elle, constituée de fibres naturelles et/ou artificielles et/ou synthétiques ayant une température de fusion plus élevée que ces dernières ;l'association des nappes élémentaires est réalisée en les soumettant à un traitement permettant de ré-orienter les fibres synthétiques de la première nappe pour que, d'une part, elles soient intimement liées dans la structure de la seconde nappe et, d'autre part, présente des extrémités libres ou bouclettes apparentes sur l'une des faces extérieures du complexe formé;le complexe obtenu est soumis à un traitement thermique permettant de fusionner les extrémités libres des fibres synthétiques de la première nappe rendant cette dernière abrasive par formation de . gouttelettes à l'endroit de la fusion.
- Matériau selon la revendication 1, caractérisé en ce que la première nappe est constituée d'un mélange de fibres cellulosiques ou autres et de fibres synthétiques thermofusibles, le pourcentage de ces dernières dans la nappe étant supérieur à 30 % et de préférence supérieur à 50 %.
- Matériau selon l'une des revendications 1 et 2, caractérisé en ce que les fibres synthétiques entrant dans la composition de la première nappe sont des fibres de polypropylène ou de polyéthylène.
- Matériau selon la revendication 3, caractérisé en ce que les fibres ont un titre supérieur à 5 dtex pour une longueur supérieure à 5 mm.
- Matériau selon l'une des revendications 1 à 4, caractérisé en ce que les fibres naturelles et/ou artificielles permettant d'obtenir le caractère absorbant sont des fibres papetières, des fibres de viscose...
- Matériau selon l'une des revendications 1 à 5, caractérisé en ce que les fibres synthétiques entrant dans la composition de la seconde nappe sont des fibres de polyester ou de polyamide, éventuellement frisées, ayant un point de fusion supérieur à celles entrant dans la composition de la première nappe.
- Matériau selon l'une des revendications 1 à 6, caractérisé en ce que le complexe reçoit un traitement additionnel, tel que crêpage, traitement avec des agents mouillants permettant d'améliorer son hydrophilie, l'imprégnation avec un liquide plus ou moins agressif tel que liquide vaisselle.
- Matériau selon l'une des revendications 1 à 7, caractérisé en ce que le grammage de la seconde nappe est compris entre 15 et 200 g/m2 et celui de la première nappe est compris entre 10 à 70 g/m2.
- Procédé pour l'obtention d'un matériau selon l'une des revendications 1 à 8, l'on réalise deux nappes de fibres élémentaires, les deux nappes étant liées entre elles en aval de la zone de formation par un traitement d'aiguilletage par jets de fluide agissant au moins contre la surface de la première nappe, caractérisé en ce que : le complexe non tissé formé est ensuite séché et reçoit un traitement thermique complémentaire permettant de provoquer la fusion partielle des extrémités des fibres chimiques de la première couche qui restent liées au complexe non tissé de base.
- Procédé selon la revendication 9, caractérisé en ce que les deux couches élémentaires sont réalisées par voie humide, leur association étant obtenue sur le tapis d'égouttage avant traitement par jets de fluide.
- Procédé selon la revendication 9, caractérisé en ce que la seconde nappe est obtenue par la technique dite "voie sèche", l'association des deux nappes élémentaires étant réalisée à la sortie de la formation de cette nappe par voie sèche en rapportant à sa surface, du côté où va s'exercer l'action des jets de fluide d'entrelaçage, le premier voile réalisé par voie humide, les deux nappes superposées étant de préférence réhumidifiées avant de les soumettre à l'action des jets d'enchevêtrement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9610235A FR2752248B1 (fr) | 1996-08-09 | 1996-08-09 | Materiau complexe non tisse absorbant comportant une face souple et une face rugueuse, et procede pour son obtention |
FR9610235 | 1996-08-09 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0826811A2 EP0826811A2 (fr) | 1998-03-04 |
EP0826811A3 EP0826811A3 (fr) | 1999-12-15 |
EP0826811B1 true EP0826811B1 (fr) | 2002-10-30 |
Family
ID=9495076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19970420136 Expired - Lifetime EP0826811B1 (fr) | 1996-08-09 | 1997-07-29 | Matériau complexe nontisse absorbant comportant une face souple et une face rugueuse, et procédé pour son obtention |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0826811B1 (fr) |
DE (1) | DE69716689T2 (fr) |
ES (1) | ES2183111T3 (fr) |
FR (1) | FR2752248B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3128775A1 (fr) * | 2021-10-29 | 2023-05-05 | Sofitec | Conduit de diffusion d’air à performances acoustiques élevées, en particulier pour véhicule automobile |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT405533B (de) * | 1996-12-23 | 1999-09-27 | Asota Gmbh | Zweischichtiges nadelvlies |
JP3409988B2 (ja) * | 1997-03-21 | 2003-05-26 | ユニ・チャーム株式会社 | 拭き取りシート |
EP0888743A1 (fr) * | 1997-07-02 | 1999-01-07 | Firma Carl Freudenberg | Matériau textile structuré ayant au moins deux nappes de fibres et procédé de fabrication |
FR2795100B1 (fr) * | 1999-06-16 | 2001-09-14 | Fort James France | Produit de coton hydrophile comportant une face douce et une face grattante |
DE10127514A1 (de) * | 2001-06-06 | 2003-01-30 | Hartmann Paul Ag | Verbundvliesstoffmaterial und Verfahren zu seiner Herstellung |
FR2836161B1 (fr) * | 2002-02-18 | 2004-04-30 | Jacob Holm France | Materiau ou voile en non tisse multicouches possedant une face rugueuse et une face douce |
EP1382730A1 (fr) * | 2002-07-15 | 2004-01-21 | Paul Hartmann AG | Tampon cosmétique en coton |
AU2002100695B4 (en) * | 2002-09-05 | 2002-12-05 | Paolo Alvera | A mat |
FR2849869B1 (fr) * | 2003-01-14 | 2005-09-09 | Ahlstrom Brignoud | Procede de fabrication d'un non tisse composite et installation pour la mise en oeuvre dudit procede |
AU2003222932A1 (en) * | 2003-02-19 | 2004-10-11 | Jacob Holm Industries France Sas | Non-woven fleece having one rough side and one soft absorbent surface |
FR2867067B1 (fr) | 2004-03-08 | 2007-09-07 | Oreal | Article cosmetique a usage unique |
JP4458903B2 (ja) | 2004-04-01 | 2010-04-28 | ユニ・チャーム株式会社 | ワイパーおよびその製造方法 |
EP1923496B1 (fr) * | 2005-09-09 | 2010-11-10 | Sanko Co., Ltd. | Chiffon de nettoyage |
US20070098768A1 (en) * | 2005-11-01 | 2007-05-03 | Close Kenneth B | Two-sided personal-care appliance for health, hygiene, and/or environmental application(s); and method of making said two-sided personal-care appliance |
DE102014107725A1 (de) * | 2014-06-02 | 2015-12-03 | TRüTZSCHLER GMBH & CO. KG | Verfahren zur Herstellung eines strukturierbaren mehrschichtigen Vlieses und mehrschichtiges Vlies |
DE102021006353A1 (de) * | 2021-12-27 | 2023-06-29 | Mondi Ascania GmbH | Verfahren zur Herstellung eines Nonwovenelements für Hygieneartikel |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59223350A (ja) * | 1983-05-26 | 1984-12-15 | 株式会社クラレ | 不織布およびその製法 |
US4950531A (en) * | 1988-03-18 | 1990-08-21 | Kimberly-Clark Corporation | Nonwoven hydraulically entangled non-elastic web and method of formation thereof |
US5328759A (en) * | 1991-11-01 | 1994-07-12 | Kimberly-Clark Corporation | Process for making a hydraulically needled superabsorbent composite material and article thereof |
-
1996
- 1996-08-09 FR FR9610235A patent/FR2752248B1/fr not_active Expired - Fee Related
-
1997
- 1997-07-29 EP EP19970420136 patent/EP0826811B1/fr not_active Expired - Lifetime
- 1997-07-29 DE DE1997616689 patent/DE69716689T2/de not_active Expired - Lifetime
- 1997-07-29 ES ES97420136T patent/ES2183111T3/es not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3128775A1 (fr) * | 2021-10-29 | 2023-05-05 | Sofitec | Conduit de diffusion d’air à performances acoustiques élevées, en particulier pour véhicule automobile |
Also Published As
Publication number | Publication date |
---|---|
DE69716689D1 (de) | 2002-12-05 |
FR2752248A1 (fr) | 1998-02-13 |
EP0826811A3 (fr) | 1999-12-15 |
EP0826811A2 (fr) | 1998-03-04 |
DE69716689T2 (de) | 2003-03-20 |
FR2752248B1 (fr) | 1998-09-25 |
ES2183111T3 (es) | 2003-03-16 |
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