EP0171806A2 - Etoffe non-tissée entremêlée contenant des fibres à deux composants et son procédé de fabrication - Google Patents

Etoffe non-tissée entremêlée contenant des fibres à deux composants et son procédé de fabrication Download PDF

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Publication number
EP0171806A2
EP0171806A2 EP85110211A EP85110211A EP0171806A2 EP 0171806 A2 EP0171806 A2 EP 0171806A2 EP 85110211 A EP85110211 A EP 85110211A EP 85110211 A EP85110211 A EP 85110211A EP 0171806 A2 EP0171806 A2 EP 0171806A2
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EP
European Patent Office
Prior art keywords
fibers
fabric
conjugate fibers
conjugate
web
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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.)
Withdrawn
Application number
EP85110211A
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German (de)
English (en)
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EP0171806A3 (fr
Inventor
Ching-Yun M. Yang
Alfred T. Mays
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Chicopee Inc
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Chicopee Inc
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Publication date
Application filed by Chicopee Inc filed Critical Chicopee Inc
Publication of EP0171806A2 publication Critical patent/EP0171806A2/fr
Publication of EP0171806A3 publication Critical patent/EP0171806A3/fr
Withdrawn legal-status Critical Current

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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
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • D04H1/49—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 in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means

Definitions

  • the invention relates to a thermal bonded, nonwoven fabric comprising entangled thermoplastic conjugate fibers alone, or in combination with base fibers, and to the method for making said nonwoven fabric.
  • Nonwoven fabrics have wide utility for use in both disposable and reusable applications, such as, e.g., aprons, towels, and wipes. There is continuing interest in producing such nonwoven fabrics having a combination of strength, and/or absorbency, and/or durability, and in manufacturing such fabrics by simple and efficient methods.
  • Evans U.S. Patent No. 3,485,706 also discloses formation of an entangled fiber fabric formed of conjugate fibers.
  • such fabrics are comprised entirely of conjugate fibers, and the conjugate fibers are shrunk and relatively highly crimped, so as to give the resulting fabric elasticity.
  • Fabrics formed of conjugate fibers in accordance with the Evans patent are retained in the entangled configuration solely by frictional engagement between the fibers, and there is no teaching or suggestion of melting any portion of the conjugate fibers to achieve a thermoplastic fusion or thermal bonding effect.
  • the diaper facing material on the Moony diaper manufactured by Unicharm in Japan comprising a very lightly entangled blend of rayon and polyester fibers and about 5% conjugated fibers having a polypropylene core and polyethylene sheath.
  • the fabric is very light weight, has little strength, and exhibits no fused entangled network or superstructure.
  • the fabric of the invention is a nonwoven, thermally bonded entangled fabric comprising at least 10 percent conjugate fibers having an exposed surface component with a lower melting point than any other portion of the conjugate fibers.
  • the fabric may also comprise other fibers, including natural fibers, such as cotton, or synthetic fibers, such as rayon, polyester or other polyolefins.
  • the nonwoven fabrics of the invention are produced by a process which comprises:
  • a nonwoven fabric formed in accordance with the instant invention will in its preferred embodiment be a generally homogeneous fabric comprising at least 10 percent conjugate fibers interspersed throughout.
  • the remainder of said fabric may comprise fibers of cotton, rayon, nylon or polyolefin fibers, such as polyester fibers, or other conventional fibers having sufficient length so they will not wash out during the entanglement process.
  • the conjugate fibers may be bicomponent fibers in which at least a portion of the outer surface has a lower melting temperature than the other component of the fiber.
  • the fabric derives strength by the entanglement process, which arranges the fibers and in particular the conjugate fibers in an entangled network. Further strength is imparted by heating of the fibers to soften or melt the low melting point component of the conjugate fiber to create adhesion bonds with adjacent conjugate fibers or other fibers in the web. When heated the low melting point component of the conjugate fibers may flow to the fiber intersections and points of tangency of the fibers, and upon solidification, bridge and join adjacent fibers, forming inclusion bonds to supplement the interfiber frictional engagement resulting from the entanglement process.
  • the high melting point components of the conjugate fibers retain their fiber integrity, and together with the fibers bonded thereto create a fused entangled fiber network which imparts added strength to the fabric, yielding a launderable fabric with enhanced resistance to wet collapse.
  • a fabric made in accordance with the present invention results in a strong fabric which is less expensive to produce and exhibits better abrasion resistance than solely entangled fabrics. Due to the strength imparted to the fabric by the entangling of the fibers, the fabrics exhibit better softness and hand than thermal bonded fabrics with comparable strength.
  • the fabrics of the present invention do not require the addition of an adhesive binder which can reduce absorbency as well as desirability for medical and surgical use.
  • the fabrics formed in accordance with the present invention require no additive binder, they possess surface characteristics wherein little fiber breakage and linting takes place, making such fabrics suitable for medical and surgical use, such as for wound dressings. Such fabrics also have improved wash durability.
  • the fabric of the present invention comprises at least 10 percent conjugate fibers.
  • conjugate fibers includes thermoplastic fibers having at least two components of differing melting points.
  • the fabric is entangled to provide interfiber frictional bonds and then heated to provide adhesion and/or inclusion bonding at plural fiber intersections.
  • fiber intersections the present application intends to include not only points where fibers criss-cross one another, but also points of fiber tangency.
  • Fibers which may be included in the fabrics of the present invention include cotton, nylon, rayon and polyolefins. These fibers are normally from about 1/4 inch to 2 inches or longer in length, but this is intended to be exemplary only, since other fiber lengths can be employed so long as the fibers do not wash out during the entanglement process. During the heating process, the low melting point component of the conjugate fiber may melt and flow about said other fibers, creating inclusion bonds.
  • the nonwoven fabric of the invention is made from a homogeneous blend of polyester fibers and polyester/polyethylene conjugate fibers.
  • the various conjugate fibers that may be used include bicomponent fibers wherein the fiber components are arranged in side-by-side relationship.
  • sheath/core bicomponent fibers it is preferred to employ sheath/core bicomponent fibers, and even more preferred to employ sheath/core bicomponent fibers with polyethylene as the sheath and the polyester as the core.
  • Either eccentric or concentric sheath/core fibers can be employed.
  • the fibers will usually have a denier within the range of from about 1 to about 6, and are in excess of about 1/4 inch in length, up to about 3 or 4 inches long.
  • the conjugate fibers employ high density polyethylene, that is, linear polyethylene that has a density of at least about 0.94, and a Melt Index ("M.I.") by ASTM D-1238(E) (190°C, 2160 gms.) of greater than 1, preferably greater than about 10, and more, most preferably from about 20 to about 50.
  • M.I. Melt Index
  • the fibers will be composed of about 40 to 60 weight percent, and preferably 45 to 55 weight percent, polyester, the remainder being polyethylene.
  • the polyester fiber which makes up a large percentage of the fabric to be formed in accordance with a preferred embodiment of the invention, has a melting temperature above that of the polyethylene sheath so that the polyester is not melted during the thermal bonding step.
  • conjugate fibers having utility in the present invention are heterofil medium tenacity fibers.
  • Such- fibers which are available from ICI Fibers, Harrogate, North Yorkshire, England, under product codes 3.3/100/V303, 3.3/50/V303, 6.7/50/V302, 13/65/V302, and 13/100/V302 include sheath/core fibers wherein the sheath is'a nylon 6 material and the core is a higher melting point nylon 66 material.
  • Such fibers are particularly useful in combination with polyester base fibers, and illustratively, the layer of heterofil fibers will comprise at least about 10 percent by weight of the overall weight of the entangled fabric.
  • medium tenacity heterofil fibers available from ICI Fibers for use in the present invention will include polyester fibers sold under product codes 3.3/50/V544 and 3.3/90/V544.
  • suitable sheath/core fibers include fibers having polyethylene or polyethylene terephthalate as a core material and an isophthalic copolymer as the sheath material.
  • polymer pairs suitable for use in the conjugate fibers of the fabrics of the present invention are copolyester/polyester, nylon/polypropylene, poly- propylene/polyester, and nylon 6/polypropylene.
  • the conjugate fibers made from these polymer pairs may comprise side-by-side or sheath/core polymer configurations.
  • the fabrics of the invention are produced by first forming a fibrous web comprising a loose array of fibers and conjugate fibers, as by carding, air-laying, or the like. It is preferred to employ a card, or a dual rotor such as is shown by Ruffo et al in U.S. Patent No. 3,768,118, as the web forming device, although other web forming apparatus can be employed if desired.
  • the exact weight of the fibrous web has not been found to be narrowly critical.
  • the major portion of the homogeneous fabric made in accordance with the present invention is made up of the relatively less expensive polyester fiber and the balance is conjugate fiber.
  • the percent by weight of the conjugate fibers may be as low as from about 10 percent to about 20 percent; however, if additional increased strength is desired the percentage of the relatively more expensive conjugate fibers can be increased up to about 100 percent by weight.
  • the mechanism disclosed in the Ruffo et al patent is an air-laying apparatus which receives fibers from cards and is capable of producing a web which can be made up of 100 percent conjugate fibers or a blend of conjugate fibers and other fibers in whatever proportion desired.
  • the conjugate fibers may be concentrated at one or both of the major surfaces of the fabric in accordance with the teachings of the Ruffo et al patent.
  • FIG. 1 shows one arrangement of apparatus that can be used to produce the fabrics of the invention.
  • a homogeneous web 8 of loose conjugate and other fibers is produced by, e.g., a dual rotor.
  • This composite web 8 comprising a loose array of conjugate fibers, e.g., polyester/polyethylene bicomponent fibers and other fibers, e.g., polyester fibers is supported on a liquid pervious support member such as an endless woven belt 10, which carries the web through an entangling mechanism 12 where a series of high pressure, fine, essentially columnar jets of water 14 impact the web, entangling the fibers.
  • the high pressure water is supplied from manifold 16.
  • the jets are arranged in rows disposed transversely across the path of travel of the belt 10.
  • there is a vacuum means 18 pulling a vacuum, e.g, of up to 5 to 10 inches of mercury, beneath the belt 10.
  • Evans in U.S. Patent No. 3,485,706, describes a process and apparatus for rearranging/entangling fibrous webs by carrying such webs on a woven belt under a series of high pressure, fine, columnar jets of liquid. Apparatus of the general type disclosed by Evans can be used in the process of this invention, although typically the degree of entanglement contemplated by this invention is much less than that generally preferred by Evans.
  • the entangled fiber web is then conveyed by suitable mechanisms including belts 20, 22 to a heating means such as a forced air oven 24.
  • a heating means such as a forced air oven 24.
  • the web is subjected to an elevated temperature to melt at least part of the low melting point component (e.g., polyethylene) of the conjugate fibers, which will form adhesion and inclusion bonds at points of fiber-to-fiber contact, and/or at points of adjacent fiber tangency upon cooling and resolidification.
  • the temperature in the heating zone is sufficiently high to melt at least part of the low melting component of the conjugate fibers, but insufficient to melt the higher melting point component (e.g., polyester) of the conjugate fibers, thus maintaining the fibrous form of the conjugate fibers in the fabric.
  • the temperature is also insufficient to melt the base fibers which constitute the major portion of the web.
  • the web is preferably thermal bonded under conditions of zero pressure, or very light pressure, so that the web is not significantly crushed or compacted during the thermal bonding step.
  • the exact temperatures employed in the thermal bonding step will vary, depending upon the weight and bulk density of the web, and upon the dwell time employed in the heated zone. For instance, bonding temperatures within the range from about 130° to about 180°C, have been found satisfactory for entangled webs comprised of a blend of polyester fibers and polyethylene/ polyester sheath/core conjugate fibers of-the type described above. Dwell times in the bonding zone will usually vary from about 2 seconds to about 1 minute, and more normally will be from about 3 to about 10 seconds.
  • the important factor in selecting the heating conditions for optimum bonding is to heat the low melting point component to at least its melting point, but not to such a temperature that the higher melting point component of the other fibers could melt.
  • very high temperatures can be used with short exposure times, in order to achieve high speed operation.
  • the low melting point component of the conjugate fiber may be caused to flow to fiber intersections and to points of fiber tangency or adjacency, to entraps other fibers in a thermoplastic mass to form inclusion bonds.
  • the low melting point component also adheres to like material on the remaining conjugate fibers and to the other fibers in the web to bond such fibers to one another.
  • the welds of the fused low melting point component e.g., polyethylene, solidify and excellent fiber-to-fiber bonds are thereby formed. Simple exposure to ambient air will ordinarily provide adequate cooling.
  • the blended web is subjected to heating conditions which substantially completely melt the polyethylene component of the conjugate fibers while leaving the polyester component thereof intact, the resulting entangled fiber fabric consists substantially completely of polyester fibers and remaining polyester cores that are retained in the entangled configuration by the cooperative action of interfiber frictional engagement and thermal polyethylene bonds.
  • the thermal bonding step can be carried out by through-air bonding, as illustrated in Figure 1 by the oven, or by other means such as infrared heating or other types of radiant heating.
  • Through-air bonding is accomplished by carrying the web on a porous conveyor belt through a zone where hot air is forced through the web. It can be carried through a heated zone between two porous screens or belts, or it can be carried around a rotating drum having a porous surface which is equipped to suck hot air through the web as it is passing around the drum. The exact method of effecting the heating has not been found to be narrowly critical.
  • the thermal bonding step can be performed by passing the web between heated restraining belts, which apply moderate pressure, or between heated embossing or calendering rolls, which apply heavier pressure. With these latter methods, some compaction and densification of the web takes place. However, the application of pressure increases the number of fiber contact points and thermal bonds.
  • the fabric of the invention is collected, as on a conventional wind-up mechanism 25.
  • the entangling process results in a z-direction movement of the fibers, and generally creates a large number of intersections where the conjugate and other fibers are in contact.
  • the low melting point component of the conjugate fibers 26 form adhesion bonds 28, and possibly inclusion thermal bonds 32 at the intersection and points of tangency of the conjugate fibers with other conjugate fibers and with the base fibers.
  • This thermal bonding creates a fused entangled fiber network which greatly increases the strength of the fabric, and gives improved abrasion resistance and resistance to wet collapse.
  • the increased strength of the fabrics of the present invention attributable to thermal bonding may be seen in the following example. Carded webs of 20% CHISSO ES fibers having a polypropylene core and polyethylene sheath, and 80% polypropylene fibers were entangled, dried, and thermal bonded on steam cans at 310F. Sample 14628-1 was dried but not thermal bonded. Sample 146280-2 was dried and thermal bonded on-line by passing the web about a stack of steam cans. Sample 146280-3 was dried and thermal bonded by passing the web, disposed between two beets, about a stack of steam cans. A comparison of fabric properties is set out below.
  • the increased strength in terms of both launderability and abrasion resistance, and the resistance to wet collapse of the fabrics according to this invention are achieved without the sacrifice to absorbency shown by fabrics combining loosely entangled fibers and, e.g., latex binder which fills the interfiber spaces.
  • binder material fills the interfiber spaces, it decreases absorbent capacity and disrupts the capillary network of the fabric.
  • the following example illustrates the enhanced absorbent characteristics of the fabrics of the present invention as compared with loosely entangled fabrics with latex binder.
  • Samples A, B, and C were made with 1 1/8 inch length, 1.5 denier AVTEX SN 1913 rayon and 1.5 inch length, 3.0 denier BICO 1050 polyethylene/polyester sheath/core conjugate fibers made by American Enka. 2.0 oz./yd. 2 webs were entangled on a 5710 Duotex belt made by Appleton Wire. The web and belt were passed under columnar jets of water from a strip of orifice of 0.007 inch diameter, disposed at 30/inch. The samples underwent 2 passes under the strips at 100 psi water pressure, 3 passes at 300 psi, 3 passes at 500 psi and then 10 passes at 1000 psi.
  • Sample D was made from a 2.0 oz./yd. 2 web of 1 1/8 inch, 1.5 denier AVTE X SN 1913 rayon.
  • the web was entangled on the same belt and with the same orifice strips as samples A, B, and C, but with 3 passes at 100 psi, 3 passes at 150 psi, and 24 passes at 600 psi.
  • the web was then saturation bonded with an acrylic binder solution and dried, to produce a ratio of 872 gms of fiber to 55 gms of binder in the final fabric.
  • the samples were tested for absorbent capacity using an SAC test, take-up rate using an ATS test, and residue (or substrate surface dry ability) and launderability using the test methods described below.
  • GAT Gravimetric Absorbency Tester
  • SAC Saturated Absorbency Capacity
  • ATS Apparent Take-up Speed
  • the GAT is set for a positive hydrostatic head by raising the base plate 3mm above the zero hydrostatic head position.
  • a sample is die cut to 10 cm. in diameter, weighed on an analytical balance to the ' nearest 0.001 gram, and is affixed to the sample holder of the GAT.
  • the sample holder is placed on the point source base plate and a 100 gram weight is imposed on top of the sample holder. This weight plus the weight of the sample holder provides a pressure of 0.05 psi on the test specimen.
  • the chart speed is set at 3 cm/min.
  • the balance is tared. The test is started and allowed to proceed until the balance readout stabilizes. The maximum weight achieved which represents the maximum amount of fluid absorbed by the test specimen is recorded.
  • the SAC is determined by dividing the maximum amount of fluid absorbed by the specimen (balance readout) by the dry weight of the test specimen. The results are expressed as grams of fluid absorbed per gram of fabric.
  • the 25% saturation point is determined by multiplying the balance readout by .25 and the 75% saturation point by multiplying by .75.
  • the 25% and 75% saturation points are connected by a straight line.
  • the slope of this line is designated by the ATS with the results expressed as grams of fluid absorbed per gram of test specimen per sec. and is a measurement of the take up rate or rate at which the test specimen takes up fluid.
  • Accelerated wash tests are done using a Launder-O-Meter unit supplied by Atlas Electric Devices Co. of Chicago, Ill. Test specimens are laundered under specified conditions of temperature, liquid level, soap concentration and abrasive action so that launderability is evaluated in a conveniently short time.
  • the Launder-O-Meter is set for a bath temperature of 160°F and run until a stabilized temperature is reached.
  • the specimen to be tested is cut to a size of 2 inches by 6 inches and placed in a container along with a standard AATCC 9.2% soap solution obtained by AATCC Research Triangle Park, North Carolina and fifty 1/4" diameter steel balls.
  • the container is placed in the basket of the Launder-O-Meter and positioned in the preheater/storage until the temperature reaches 120°F.
  • the basket is placed on the rotor of the Launder-O-Meter, the unit started, and the time cycle set for 60 minutes.
  • Failure of the specimen is noted by visual inspection for any holes. If the specimen passes, it is recycled by the above procedure. This process continues until the specimen fails or until the test is terminated.
  • the wash durability test results are reported as the number of hours of successful wash or the number of hours to wash failure.
  • the residue test measures wicking efficiency and yields an indication of the ability of the test specimen to wipe surfaces dry.
  • a glass plate is placed on an analytical balance and the balance tared. From the previously conducted SAC the 50% SAC level is calculated and this amount of liquid is carefully dispensed onto the glass plate so as to cause it to puddle in the center of the plate.
  • a test specimen is die cut in a 10 c.m. diameter and carefully placed on the plate over the puddle of liquid. Twenty seconds are allowed for the specimen to reach an equilibrium absorption after which the test specimen is removed from the glass plate and the weight of the liquid which remains on the plate is read directly from the balance. This weight of liquid is the residue and is reported in grams of liquid.
  • the fabrics of the present invention exhibited greater absorbent capacity and take-up rate than sample D .
  • the fabrics of the present invention also showed increasing absorbent capacity and take-up as the percentage of ENKA conjugate fibers were increased from 10 percent to 20 percent to 33 percent.
  • the fabrics of the present invention exhibited good surface drying ability, though the surface drying ability declined with increasing percentage of the non-absorbent conjugate fibers or decrease in percentage rayon. Surface drying ability may be improved by treating the fabric with a surfactant. Samples A and D showed comparable durability.
  • the fabrics of the present invention may be entangled on a variety of supporting belts to achieve a broad range of fiber structures and fabric appearances, as is known in the art.
  • the fabrics may appear apertured or unapertured and may have localized tufts or nubs of entangling, or elongated ribs of entangled fibers extending across the fabric.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
EP85110211A 1984-08-16 1985-08-14 Etoffe non-tissée entremêlée contenant des fibres à deux composants et son procédé de fabrication Withdrawn EP0171806A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64123984A 1984-08-16 1984-08-16
US641239 1984-08-16

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EP0171806A2 true EP0171806A2 (fr) 1986-02-19
EP0171806A3 EP0171806A3 (fr) 1987-06-16

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EP (1) EP0171806A3 (fr)
AU (1) AU4624485A (fr)
BR (1) BR8503890A (fr)
ZA (1) ZA856208B (fr)

Cited By (29)

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EP0304825A2 (fr) * 1987-08-28 1989-03-01 Mitsubishi Rayon Co., Ltd. Procédé continu pour la production d'une feuille fibreuse composite
EP0310200A2 (fr) * 1987-10-02 1989-04-05 Stamicarbon B.V. Mélanges de filaments ayant des points de fusion ou de décomposition différents et utilisation de ces combinaisons
EP0371807A2 (fr) * 1988-12-01 1990-06-06 Kanebo Ltd. Un procédé pour la fabrication d'un matériau pour coussin
EP0394954A3 (fr) * 1989-04-28 1991-03-13 Fiberweb North America, Inc. Etoffes résistantes non tissées faites avec des fibres développées à constituants multiples
EP0466381A1 (fr) * 1990-07-02 1992-01-15 Chisso Corporation Procédé de fabrication d'une cartouche filtrante de précision
WO1992006237A1 (fr) * 1990-10-08 1992-04-16 Kaysersberg Nontisse lie hydrauliquement et son procede de fabrication
EP0483386A1 (fr) * 1990-05-28 1992-05-06 Teijin Limited Nouvelle structure d'amortissement et sa fabrication
US5336552A (en) 1992-08-26 1994-08-09 Kimberly-Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and ethylene alkyl acrylate copolymer
EP0624390A1 (fr) * 1993-05-13 1994-11-17 Firma Carl Freudenberg Procédé de fabrication d'une nappe de fibres pour un filtre à bande
EP0625603A1 (fr) * 1992-11-02 1994-11-23 Kanebo, Ltd. Agregat fibreux ultra-gonfle et son procede de production
GB2287041A (en) * 1994-03-04 1995-09-06 Kimberly Clark Co Surge management nonwoven web for personal care articles
GB2313383A (en) * 1996-05-24 1997-11-26 British United Shoe Machinery Insole material
EP0822284A2 (fr) * 1996-07-29 1998-02-04 Firma Carl Freudenberg Matériau non-tissé et dispositif de fabrication
GB2319265A (en) * 1996-11-18 1998-05-20 Bonded Fibre Fab A high durability non-woven fabric
EP0896080A2 (fr) * 1997-08-06 1999-02-10 Fleissner GmbH & Co. Maschinenfabrik Méthode de fabrication d'un non-tissé composite volumineux, dispositif de réalisation et produit
EP0903117A2 (fr) * 1997-09-17 1999-03-24 Tonokura Ika Kogyo Kabushiki Kaisha Matériaux médicales et méthode de leur production
WO1999019551A1 (fr) * 1997-10-13 1999-04-22 M & J Fibretech A/S Installation de production d'un voile en plastique et en fibres cellulosiques
EP0972873A1 (fr) * 1998-07-17 2000-01-19 Uni-Charm Corporation Procédé humide pour la fabrication d'un tissu non-tissé et dispositif approprié
GB2342362A (en) * 1998-10-02 2000-04-12 Rawson Carpets Ltd Fabric comprising bonded conjugate fibres
EP1020145A1 (fr) * 1999-01-12 2000-07-19 Akzo Nobel N.V. Housse de matelas avec faible propension au bruit
WO2002016025A2 (fr) * 2000-08-21 2002-02-28 The Procter & Gamble Company Voile fibreux enchevetre en surface et procede de fabrication et d'utilisation
US6784126B2 (en) 1990-12-21 2004-08-31 Kimberly-Clark Worldwide, Inc. High pulp content nonwoven composite fabric
WO2008052372A1 (fr) * 2006-11-03 2008-05-08 Strahm Textile Systems Ag Procédé et dispositif permettant d'empêcher l'adhérence de matériau non tissé lors de l'opération de liaison
US7645353B2 (en) 2003-12-23 2010-01-12 Kimberly-Clark Worldwide, Inc. Ultrasonically laminated multi-ply fabrics
US7732357B2 (en) 2000-09-15 2010-06-08 Ahlstrom Nonwovens Llc Disposable nonwoven wiping fabric and method of production
US8281857B2 (en) 2007-12-14 2012-10-09 3M Innovative Properties Company Methods of treating subterranean wells using changeable additives
US8353344B2 (en) 2007-12-14 2013-01-15 3M Innovative Properties Company Fiber aggregate
US8596361B2 (en) 2007-12-14 2013-12-03 3M Innovative Properties Company Proppants and uses thereof
US9221963B2 (en) 2008-11-27 2015-12-29 Speciality Fibres And Materials Ltd. Absorbent material

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US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same
US5405682A (en) 1992-08-26 1995-04-11 Kimberly Clark Corporation Nonwoven fabric made with multicomponent polymeric strands including a blend of polyolefin and elastomeric thermoplastic material
CA2092604A1 (fr) 1992-11-12 1994-05-13 Richard Swee-Chye Yeo Fils polymeres hydrophiles composites; non-tisses obtenus avec ces fils
US5482772A (en) 1992-12-28 1996-01-09 Kimberly-Clark Corporation Polymeric strands including a propylene polymer composition and nonwoven fabric and articles made therewith
US6673158B1 (en) 2000-08-21 2004-01-06 The Procter & Gamble Company Entangled fibrous web of eccentric bicomponent fibers and method of using

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EP0304825A2 (fr) * 1987-08-28 1989-03-01 Mitsubishi Rayon Co., Ltd. Procédé continu pour la production d'une feuille fibreuse composite
EP0310200A2 (fr) * 1987-10-02 1989-04-05 Stamicarbon B.V. Mélanges de filaments ayant des points de fusion ou de décomposition différents et utilisation de ces combinaisons
EP0310200A3 (fr) * 1987-10-02 1990-02-14 Stamicarbon B.V. Mélanges de filaments ayant des points de fusion ou de décomposition différents et utilisation de ces combinaisons
US5141805A (en) * 1988-12-01 1992-08-25 Kanebo Ltd. Cushion material and method for preparation thereof
EP0371807A2 (fr) * 1988-12-01 1990-06-06 Kanebo Ltd. Un procédé pour la fabrication d'un matériau pour coussin
EP0371807A3 (en) * 1988-12-01 1990-09-19 Kanebo Ltd. Cushion material and method for preparation thereof
EP0394954A3 (fr) * 1989-04-28 1991-03-13 Fiberweb North America, Inc. Etoffes résistantes non tissées faites avec des fibres développées à constituants multiples
EP0483386A1 (fr) * 1990-05-28 1992-05-06 Teijin Limited Nouvelle structure d'amortissement et sa fabrication
EP0483386A4 (en) * 1990-05-28 1992-11-04 Teijin Limited Novel cushioning structure and production thereof
EP0466381A1 (fr) * 1990-07-02 1992-01-15 Chisso Corporation Procédé de fabrication d'une cartouche filtrante de précision
WO1992006237A1 (fr) * 1990-10-08 1992-04-16 Kaysersberg Nontisse lie hydrauliquement et son procede de fabrication
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EP0625603A1 (fr) * 1992-11-02 1994-11-23 Kanebo, Ltd. Agregat fibreux ultra-gonfle et son procede de production
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EP0624390A1 (fr) * 1993-05-13 1994-11-17 Firma Carl Freudenberg Procédé de fabrication d'une nappe de fibres pour un filtre à bande
EP0672774A2 (fr) * 1994-03-04 1995-09-20 Kimberly-Clark Corporation Nappe non-tissée avec contrôle de l'écoulement de liquide améliorée pour articles de soins et similaires
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EP0672774A3 (fr) * 1994-03-04 1996-07-24 Kimberly Clark Co Nappe non-tissée avec contrÔle de l'écoulement de liquide améliorée pour articles de soins et similaires.
FR2716901A1 (fr) * 1994-03-04 1995-09-08 Kimberly Clark Co Nappe fibreuse non tissée et produits d'hygiène intime incorporant une telle nappe comme couche de gestion de l'afflux.
GB2287041B (en) * 1994-03-04 1997-10-29 Kimberly Clark Co Improved surge management fibrous nonwoven web for personal care absorbent articles and the like
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EP0822284A2 (fr) * 1996-07-29 1998-02-04 Firma Carl Freudenberg Matériau non-tissé et dispositif de fabrication
EP0822284A3 (fr) * 1996-07-29 1998-04-15 Firma Carl Freudenberg Matériau non-tissé et dispositif de fabrication
GB2319265A (en) * 1996-11-18 1998-05-20 Bonded Fibre Fab A high durability non-woven fabric
EP0896080A2 (fr) * 1997-08-06 1999-02-10 Fleissner GmbH & Co. Maschinenfabrik Méthode de fabrication d'un non-tissé composite volumineux, dispositif de réalisation et produit
US6254821B1 (en) * 1997-08-06 2001-07-03 Fleissner Gmbh Co., Maschinenfabrik Device for producing a voluminous bonded fleece, device implementing the method, and bonded fleece according to this method
EP0896080A3 (fr) * 1997-08-06 1999-09-08 Fleissner GmbH & Co. Maschinenfabrik Méthode de fabrication d'un non-tissé composite volumineux, dispositif de réalisation et produit
EP0903117A2 (fr) * 1997-09-17 1999-03-24 Tonokura Ika Kogyo Kabushiki Kaisha Matériaux médicales et méthode de leur production
EP0903117A3 (fr) * 1997-09-17 2000-11-08 Tonokura Ika Kogyo Kabushiki Kaisha Matériaux médicales et méthode de leur production
US6375773B1 (en) 1997-10-13 2002-04-23 M&J Fibretech A/S Plant for producing a fibre web of plastic and cellulose fibres
WO1999019551A1 (fr) * 1997-10-13 1999-04-22 M & J Fibretech A/S Installation de production d'un voile en plastique et en fibres cellulosiques
USRE42765E1 (en) 1997-10-13 2011-10-04 Oerlikon Textile Gmbh & Co. Kg Plant for producing a fibre web of plastic and cellulose fibres
EP1930491A3 (fr) * 1998-07-17 2010-12-29 Uni-Charm Corporation Processus de mouillage pour fabriquer un tissu non tissé et appareil correspondant
EP1930491A2 (fr) * 1998-07-17 2008-06-11 Unicharm Corporation Processus de mouillage pour fabriquer un tissu non tissé et appareil correspondant
EP1905877A2 (fr) * 1998-07-17 2008-04-02 Uni-Charm Corporation Processus de mouillage pour fabriquer un tissu non tissé et appareil correspondant
EP0972873A1 (fr) * 1998-07-17 2000-01-19 Uni-Charm Corporation Procédé humide pour la fabrication d'un tissu non-tissé et dispositif approprié
EP1905877A3 (fr) * 1998-07-17 2010-12-29 Uni-Charm Corporation Processus de mouillage pour fabriquer un tissu non tissé et appareil correspondant
CN1116453C (zh) * 1998-07-17 2003-07-30 尤妮佳股份有限公司 湿法无纺布的制造方法及制造装置
GB2342362B (en) * 1998-10-02 2002-12-24 Rawson Carpets Ltd Floor covering
GB2342362A (en) * 1998-10-02 2000-04-12 Rawson Carpets Ltd Fabric comprising bonded conjugate fibres
EP1020145A1 (fr) * 1999-01-12 2000-07-19 Akzo Nobel N.V. Housse de matelas avec faible propension au bruit
WO2002016025A2 (fr) * 2000-08-21 2002-02-28 The Procter & Gamble Company Voile fibreux enchevetre en surface et procede de fabrication et d'utilisation
WO2002016025A3 (fr) * 2000-08-21 2002-06-06 Procter & Gamble Voile fibreux enchevetre en surface et procede de fabrication et d'utilisation
US7732357B2 (en) 2000-09-15 2010-06-08 Ahlstrom Nonwovens Llc Disposable nonwoven wiping fabric and method of production
US7645353B2 (en) 2003-12-23 2010-01-12 Kimberly-Clark Worldwide, Inc. Ultrasonically laminated multi-ply fabrics
WO2008052372A1 (fr) * 2006-11-03 2008-05-08 Strahm Textile Systems Ag Procédé et dispositif permettant d'empêcher l'adhérence de matériau non tissé lors de l'opération de liaison
US8281857B2 (en) 2007-12-14 2012-10-09 3M Innovative Properties Company Methods of treating subterranean wells using changeable additives
US8353344B2 (en) 2007-12-14 2013-01-15 3M Innovative Properties Company Fiber aggregate
US8596361B2 (en) 2007-12-14 2013-12-03 3M Innovative Properties Company Proppants and uses thereof
US9221963B2 (en) 2008-11-27 2015-12-29 Speciality Fibres And Materials Ltd. Absorbent material

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AU4624485A (en) 1986-02-20
EP0171806A3 (fr) 1987-06-16
ZA856208B (en) 1987-03-25
BR8503890A (pt) 1986-05-27

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