EP2573242B1 - Saugfähiges Fasermaterial und Herstellungsverfahren dafür - Google Patents

Saugfähiges Fasermaterial und Herstellungsverfahren dafür Download PDF

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Publication number
EP2573242B1
EP2573242B1 EP12184937.6A EP12184937A EP2573242B1 EP 2573242 B1 EP2573242 B1 EP 2573242B1 EP 12184937 A EP12184937 A EP 12184937A EP 2573242 B1 EP2573242 B1 EP 2573242B1
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EP
European Patent Office
Prior art keywords
absorbent
fibers
fibrous
absorbent material
fibrous material
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Active
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EP12184937.6A
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English (en)
French (fr)
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EP2573242A1 (de
Inventor
Paul Y. Fung
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Johnson and Johnson Consumer Inc
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Johnson and Johnson Consumer Inc
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Publication date
Priority claimed from US13/236,788 external-priority patent/US8695185B2/en
Priority claimed from US13/236,799 external-priority patent/US20130072891A1/en
Application filed by Johnson and Johnson Consumer Inc filed Critical Johnson and Johnson Consumer Inc
Priority to EP15170904.5A priority Critical patent/EP2930260B1/de
Publication of EP2573242A1 publication Critical patent/EP2573242A1/de
Application granted granted Critical
Publication of EP2573242B1 publication Critical patent/EP2573242B1/de
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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
    • 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
    • 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
    • D04H1/42—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
    • D04H1/4258—Regenerated 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
    • 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
    • D04H18/02—Needling machines with needles

Definitions

  • the present invention generally relates to an absorbent material. More particularly, the present invention relates to an absorbent material for use in disposable sanitary absorbent products such as sanitary napkins, pantiliners, tampons, diapers, adult incontinence products, and the like.
  • Lofty, resilient, non-woven webs that is nonwoven webs that have a high degree of loft and the tendency to retain such loft, are well known.
  • lofty, resilient, non-woven webs may be used in disposable sanitary products such as sanitary napkins, pantiliners, tampons, diapers, adult incontinence products, and the like.
  • a perceived benefit of such lofty, resilient, non-woven webs is that such materials may deliver enhanced comfort to a user of such disposable sanitary products since the lofty, resilient, nonwoven webs may tend to conform to, and move with, the user's body during use.
  • a problem with lofty, resilient, nonwoven webs is that due to the loft of such materials (i.e. their low density) such webs are not particularly absorbent.
  • such materials may exhibit poor rewet properties. That is, such materials may release or "wet back" fluid when subjected to an external pressure.
  • US 2009/0000643 A1 discloses a cleaning article for moist or wet cleaning comprising a nonwoven, and its use for cleaning human skin or household surfaces or for cleaning surfaces in industrial applications.
  • US 2011/0150558 A1 discloses a kit comprising a product dispenser for dispensing a personal care composition in combination with an absorbent article.
  • US 5 928 973 A discloses a non-woven needlepunch fabric consisting essentially of 60% to 90% by weight lyocell fiber having a length of 2.54 cm (one inch) to 15.24 cm (six inches), 10% to 40% by weight polyester fiber having a length of 2.54 cm (one inch) to 15.24 cm (six inches) and 0% to 30% of other textile fibers, wherein said lyocell fiber has a denier in the range of 0.75 to 6 prior to fibrillation, said fabric having been formed by subjecting said fiber to carding, cross-lapping and needle punching to produce a fabric with interlocked fibers.
  • EP 0 525 676 A2 discloses a facing material suitable for use in diapers and the like which comprises a fibrous top layer for engaging a body fluid, a generally opaque aperture middle layer, and a bottom layer having a capillary structure for drawing body fluid from the fibrous top layer.
  • the present invention provides an absorbent material including a fibrous material having a plurality of individual fibers forming a fiber matrix, a plurality of absorbent fibers, wherein the plurality of absorbent fibers are impregnated within the fiber matrix by means of a needlepunch process and wherein the absorbent material further comprises a superabsorbent polymer material.
  • the present disclosure further provides a fibrous material including a plurality of individual fibers forming a fiber matrix, a first plurality of absorbent fibers arranged in a first layer, a second plurality of absorbent fibers arranged in a second layer, wherein the first and second plurality of absorbent fibers are impregnated within the fiber matrix by means of a needlepunch process and wherein the absorbent material further comprises a superabsorbent polymer material.
  • the present disclosure also provides a method for making an absorbent material including the steps of providing a fibrous material including a plurality of individual fibers forming a fiber matrix, depositing a plurality of absorbent fibers on a top surface of the fibrous material, and impregnating the plurality of absorbent fibers into the fiber matrix by means of a needlepunch process wherein each of the plurality of individual fibers has a fiber diameter that is at least 1 ⁇ m greater than a fiber diameter of each of the absorbent fibers.
  • Fig. 1 illustrates a sectional schematic view of an absorbent material 10 prepared according to the method of the present disclosure.
  • the absorbent material 10 is formed from a fibrous material 12 including a plurality of individual fibers 14 that form a fiber matrix 16.
  • the absorbent material 10 further includes a plurality of absorbent fibers 18.
  • the absorbent fibers 18 are impregnated within the fiber matrix 16.
  • the fibrous material 12 is preferably a fibrous nonwoven material made by a known nonwoven manufacturing technique such as an airlaid process, a card and bind process or a resin and adhesive bond process.
  • the nonwoven material is a "high loft" nonwoven.
  • the nonwoven preferably has a density lower than 0.05 g/cc, and preferably between about 0.01 g/cc and 0.03 g/cc, prior to the impregnation of the nonwoven with the absorbent fibers 18.
  • the individual fibers 14 forming the fibrous nonwoven material may be selected from fibers including synthetic, nonabsorbent fibers that may or may not be wettable, for example hydrophilic fibers, hydrophobic fibers, and combinations thereof.
  • nonabsorbent fibers 14 forming the fibrous material 12 may be rendered wettable by treating such fibers with a suitable surface treatment, such a surfactant or like.
  • Each of the fibers 14 forming the fibrous nonwoven material preferably has a fiber diameter within the range of 11 ⁇ m and 100 ⁇ m.
  • the fibrous material 12 preferably further includes a binder material, such as a latex binder.
  • the binder material is preferably present in the fibrous material 12 in an amount between about 30% by weight to about 50% by weight.
  • the absorbent fibers 18 are preferably selected from cellulosic fiber types, such as, but not limited to, hard wood pulp, soft wood pulp, rayon, and cotton.
  • the absorbent material 10 may include a single absorbent fiber type of those listed above or in the alternative may include multiple fiber types of those listed above (i.e. a mixture of absorbent fibers).
  • Each of the absorbent fibers 18 preferably has fiber diameter within the range of 10 ⁇ m and 40 ⁇ m.
  • the individual fibers 14 forming the fibrous material 12 and the absorbent fibers 18 are selected such that each of the individual fibers 14 has a fiber diameter that is at least 1 ⁇ m greater than a fiber diameter of each of the absorbent fibers 18.
  • the absorbent fibers 18 are impregnated within the fiber matrix 16 by means of a needlepunch process according to the present disclosure.
  • the needlepunch process according to the present disclosure described in detail below, allows the absorbent fibers 18 to be impregnated within the fiber matrix 16 without the fibrous material 12 losing its high loft properties.
  • the density of fibrous material 12 prior to being impregnated with the absorbent fibers 18 is preferably within the range of 0.01 g/cc and 0.03 g/cc.
  • the fibrous material 12 preferably has a thickness in the range of about 1.5 mm to about 5 mm prior to impregnation of the fibrous material 12 with the absorbent fibers 18. After impregnation of the fibrous material 12 with the absorbent fibers 18 the absorbent material 10 retains substantially the same thickness as the original fibrous material. Specifically, a percent change between the thickness of the fibrous material 12 prior to the plurality of absorbent fibers 18 being impregnated therein and a thickness of the absorbent material 10 after the absorbent fibers 18 have been impregnated within the fibrous material 12 is preferably less than 50%, more preferably less than 30% and most preferably less than 15%.
  • FIG. 2 depicts a schematic representation of an apparatus 19 for making the absorbent material 10.
  • a web of fibrous material 12 is fed from a supply roll 20 and conveyed in a machine direction by a plurality of rolls 22, 24 and 26.
  • a gravity fed hopper 28, or the like is utilized to apply a selected amount of absorbent fibers 18 to a top surface 30 of the fibrous material 12.
  • the fibrous material 12 is further conveyed in a machine direction and passed through a conventional needlepunch apparatus 32 of the type known to those of skill in the art.
  • the needlepunch apparatus 32 functions to impregnate the absorbent fibers 18 within the fibrous material 12 by means of a plurality of needles 34.
  • a conventional needlepunch apparatus includes a plurality of needles that are normally adapted to mechanically orient and interlock the fibers of a spunbonded or carded web.
  • the needles 34 of the needlepunch apparatus 32 are used to impregnate absorbent fibers 18 within the fibrous material 12.
  • a needle 34 suitable for use in the method according to the present disclosure is depicted in Fig. 3 and Fig. 3a .
  • the needle 34 generally includes a blade 36, a barb 38, and a throat section 40.
  • the total barb depth of the barb 38 is indicated by letter "d" in the Fig. 3a .
  • the barb depth "d" is selected such that a radius of each of the absorbent fibers 18 is smaller than the barb depth "d".
  • the radius of each absorbent fiber 18 is at least 0.5 ⁇ m smaller, for example 1 ⁇ m smaller than the barb depth.
  • the barb depth "d” should be selected such that each of the individual fibers 14 of the fibrous material 12 has a radius that is larger than the barb depth "d”.
  • the radius of each individual fiber 14 of the fibrous material 12 is at least 0.5 ⁇ m larger, for example 1 ⁇ m larger than the barb depth. If you have a multiple denier fibrous material 12, the diameter of the smallest diameter fiber 14 must be larger than the diameter of each of the absorbent fibers 18.
  • the plurality of needles 34 in the needlepunch apparatus effectively grasp the absorbent fibers 18 and thus can impregnate such absorbent fibers 18 within the fibrous material 12, as shown in Figs. 3b-3e .
  • the plurality of needles 34 will not grasp the individual fibers 14 of the fibrous material 12 and thus will not destroy the "high loft” properties of the fibrous material 12.
  • the final absorbent material 10 is provided with superior fluid handling properties while still retaining the high loft properties of the fibrous material 12.
  • Needles particularly useful in the present method are commercially available from the Foster Needle Co., Inc., Manatowoc, Wisconsin, under product designation "The Foster Formed Barb".
  • the resultant absorbent material 10 is further conveyed in a machine directly by rolls 28 and 30.
  • the absorbent material 10 may be arranged in a rolled form for storage or may be further conveyed for incorporation into disposable sanitary absorbent products such as a sanitary napkin, pantiliner, tampons, diaper, adult incontinence product, or the like.
  • the fibrous material 12 may be further conveyed to a superabsorbent application station 42.
  • the superabsorbent application station 42 comprises a gravity fed hopper 44 structured and arranged to apply a selected amount of superabsorbent polymer material 46 to a top surface 30 of the fibrous material 12.
  • a pressure fed nozzle or the like may be used to apply the superabsorbent polymer material 46 to the top surface 30 of the fibrous material 12.
  • the fibrous material 12 is conveyed over a vacuum 50 that functions to draw the superabsorbent polymer material 46 into the fiber matrix 16 of the fibrous material 12.
  • the resultant absorbent material 10a an absorbent material according to an embodiment of the invention, is shown in Fig. 4 .
  • the superabsorbent polymer 46 has been drawn into the fiber matrix 16 of the fibrous material 12 and functions to further enhance the fluid handling capabilities of the absorbent material 10a.
  • the term "superabsorbent polymer” refers to materials which are capable of absorbing and retaining at least about 10 times their weight in body fluids under a 0.5 psi pressure.
  • the superabsorbent polymer particles of the invention may be inorganic or organic crosslinked hydrophilic polymers, such as polyvinyl alcohols, polyethylene oxides, crosslinked starches, guar gum, xanthan gum, and the like.
  • the particles may be in the form of a powder, grains, granules, or fibers.
  • Preferred superabsorbent polymer particles for use in the present invention are crosslinked polyacrylates, such as the product offered by Sumitomo Seika Chemicals Co., Ltd. of Osaka, Japan, under the designation of SA70.
  • the absorbent material 10a may be further conveyed in a machine direction by roll 51 and arranged in a rolled form for storage or may be further conveyed for incorporation into a disposable sanitary absorbent products such as a sanitary napkin, pantiliner, tampons, diaper, adult incontinence product, or the like.
  • a disposable sanitary absorbent products such as a sanitary napkin, pantiliner, tampons, diaper, adult incontinence product, or the like.
  • Fig. 5 illustrates a sectional schematic view of an absorbent material 10b according to the present invention.
  • the absorbent material 10b is formed from a fibrous material 12 including a plurality of individual fibers 14 that form a fiber matrix 16.
  • the absorbent material 10b further includes a first plurality of absorbent fibers 18a arranged in a first layer 52 and a second plurality of absorbent fibers 18b arranged in a second layer 54.
  • the absorbent fibers 18a and 18b may comprise the same fibers as those absorbent fibers 18 described above with regard to Fig. 1 .
  • the absorbent fibers 18a and 18b may be the same fiber type or may be different fibers types (i.e. a mixture of fibers).
  • a first absorbent fiber mixture (or individual fiber) may be employed in the first plurality of fibers 18a and different absorbent fiber mixture (or individual fiber) may be employed in the second plurality of fibers 18b.
  • the individual fibers 14 may be the same as the fibers 14 described above with regard to Fig. 1 .
  • the individual fibers 14 may be the same fiber type (i.e. a single fiber type) or different fiber types (i.e. a mixture of fibers).
  • the first layer 52 is arranged in spaced relationship to the second layer 54.
  • the absorbent material 10b further includes superabsorbent polymer material 46 dispersed within the fiber matrix 16 of the fibrous material 12.
  • the superabsorbent 46 is arranged in a layer 56 between the first layer 52 and second layer 54 of the absorbent fibers 18a and 18b.
  • FIG. 6 depicts a schematic representation of an apparatus 19a for making the absorbent material 10b.
  • a web of fibrous material 12 is fed from a supply roll 20 and conveyed in a machine direction by a plurality of rolls 22, 24 and 26.
  • a gravity fed hopper 28, or the like is utilized to apply a selected amount of absorbent fibers 18a to a top surface 30 of the fibrous material 12.
  • the fibrous material 12 is further conveyed in a machine direction and passed through a needlepunch apparatus 32 for impregnating the absorbent fibers 18a within the fibrous material 12.
  • the superabsorbent application station 42 comprises a gravity fed hopper 44 structured and arranged to apply a selected amount of superabsorbent polymer material 46 to a top surface 30 of the fibrous material 12.
  • a gravity fed hopper 44 structured and arranged to apply a selected amount of superabsorbent polymer material 46 to a top surface 30 of the fibrous material 12.
  • any suitable means known to those of skill in the art such as a pressure fed nozzle or the like, may be used to apply the superabsorbent polymer material 46 to the top surface 30 of the fibrous material 12.
  • the fibrous material 12 is conveyed over a vacuum 50 that functions to draw the superabsorbent polymer material 46 into the fiber matrix 16 of the fibrous material 12.
  • the superabsorbent application and vacuum step described may be omitted from the described method.
  • the fibrous material 12 is conveyed past the vacuum 50, the fibrous material 12 is conveyed by rolls 51 and 53 to a second gravity fed hopper 28a, or the like, to apply a selected amount of absorbent fibers 18b to a top surface 30 of the fibrous material 12. Thereafter, the fibrous material 12 is further conveyed in a machine direction by rolls 55 and 57 and passed through a second needlepunch apparatus 32a for impregnating the absorbent fibers 18b within the fibrous material 12.
  • the absorbent material 10b is further conveyed in a machine direction by roll 59 and then may be arranged in a rolled form for storage or may be further conveyed for incorporation into a disposable sanitary absorbent products such as a sanitary napkin, pantiliner, tampons, diaper, adult incontinence product, or the like.
  • a disposable sanitary absorbent products such as a sanitary napkin, pantiliner, tampons, diaper, adult incontinence product, or the like.
  • the fibrous material includes a latex binder present in the amount of 40% by weight.
  • a fibrous nonwoven material of this type is commercially available from Kem-Wove, Inc., Charlotte, NC under product code SCN09-038.
  • the absorbent fibers comprise 100% viscose rayon having a denier of 4. Rayon has a density of 1.5 g/cc thus the absorbent fibers have a fiber diameter of 19 ⁇ m.
  • 150 gsm (g/m 2 ) of the rayon fibers are ⁇ applied to a top surface of the fibrous nonwoven material and impregnated within the material to a depth of 2.5 mm by means of the needlepunch process described above with reference to Fig. 2 .
  • the needles used in the needlepunch process have a barb depth "d" of 12 ⁇ m.
  • the final absorbent material has a thickness of 2.7 mm.
  • the fibrous material includes a latex binder present in the amount of 40% by weight.
  • a fibrous nonwoven material of this type is commercially available from Kem-Wove, Inc., Charlotte, NC under product code SCN09-038.
  • the first plurality of absorbent fibers comprises 100% viscose rayon having a denier of 4. Rayon has a density of 1.5 g/cc thus the absorbent fibers have a fiber diameter of 19 ⁇ m.
  • 75 gsm of the rayon fibers are applied to a top surface of the fibrous nonwoven material and impregnated within the material to a depth between 4.0 mm and 5.0 mm by means of a first needlepunch apparatus.
  • the needles used in the needlepunch process have a barb depth "d" of 12 ⁇ m.
  • the fibrous material is conveyed to a superabsorbent application station. 40 gsm of superabsorbent (SA70 commercially available from Sumitomo Seika Chemicals Co., Ltd.
  • the superabsorbent is drawn into the fibrous material at a depth between 3.0 mm and 4.0 mm by means of a vacuum. Thereafter, the fibrous material 12 is conveyed to a second gravity fed hopper to apply a selected amount of a second plurality of absorbent fibers to a top surface of the fibrous material.
  • the second plurality of absorbent fibers comprises 100% viscose rayon having a denier of 4. Rayon has a density of 1.5 g/cc thus the absorbent fibers have a fiber diameter of 19 ⁇ m.
  • 75 gsm of the rayon fibers are applied to a top surface of the fibrous nonwoven material and impregnated within the material to a depth between 1.0 mm and 3.0 mm by means of a second needlepunch apparatus.
  • the needles used in the second needlepunch process have a barb depth "d" of 12 ⁇ m.
  • the final absorbent material has a thickness of 2.5 mm.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Nonwoven Fabrics (AREA)

Claims (10)

  1. Absorbierendes Material (10), umfassend:
    ein Fasermaterial (12), umfassend mehrere Einzelfasern (14), die eine Fasermatrix (16) bilden,
    mehrere absorbierende Fasern (18),
    wobei die mehreren absorbierenden Fasern (18) mittels Nadelverfahren in die Fasermatrix (16) einimprägniert sind und wobei das absorbierende Material ferner einen Superabsorber (46) enthält.
  2. Absorbierendes Material (10) nach Anspruch 1, bei dem die mehreren Einzelfasern (14) jeweils über einen Faserdurchmesser zwischen 11 µm und 100 µm verfügen.
  3. Absorbierendes Material (10) nach Anspruch 1 oder 2, bei dem die mehreren absorbierenden Fasern (18) jeweils über einen Faserdurchmesser zwischen 10 µm und 40 µm verfügen.
  4. Absorbierendes Material (10) nach einem der Ansprüche 1 bis 3, bei dem die mehreren Einzelfasern (14) jeweils über einen um mindestens 1 µm größeren Faserdurchmesser als jede der absorbierenden Fasern (18) verfügen.
  5. Absorbierendes Material (10) nach einem der Ansprüche 1 bis 4, bei dem es sich bei dem Fasermaterial (12) um ein Faservlies handelt, wobei das Faservlies bevorzugt aus mehreren Fasern ausgewählt aus der Gruppe bestehend aus Polyester, Polyamid, Copolyester, Polyethylen, Polypropylen, Polymilchsäure und deren Kombinationen gebildet ist.
  6. Absorbierendes Material (10) nach Anspruch 5, bei dem das Faservlies durch Luftlegung, mittels Krempeln und Bindemittel oder mittels Harz und Verklebung hergestellt ist.
  7. Absorbierendes Material (10) nach einem der Ansprüche 1 bis 6, bei dem die mehreren absorbierenden Fasern (18) ausgewählt sind aus der Gruppe bestehend aus Laubholzzellstoff, Nadelholzzellstoff, Rayon, Baumwolle und deren Kombinationen.
  8. Absorbierendes Material (10b) nach einem der Ansprüche 1 bis 7, bei dem das absorbierende Material (10b) umfasst:
    ein Fasermaterial (12), umfassend mehrere Einzelfasern (14), die eine Fasermatrix (16) bilden,
    mehrere erste absorbierende Fasern (18a), angeordnet zu einer ersten Schicht (52),
    mehrere zweite absorbierende Fasern (18b), angeordnet zu einer zweiten Schicht (54),
    wobei die mehreren ersten und zweiten absorbierenden Fasern (18a und 18b) mittels Nadelverfahren in die Fasermatrix (16) einimprägniert sind.
  9. Absorbierendes Material (10b) nach Anspruch 8, bei dem erste Schicht (52) und zweite Schicht (54) voneinander beabstandet angeordnet sind.
  10. Absorbierendes Material (10b) nach Anspruch 8 oder 9, bei dem der Superabsorber (46) in einer Schicht zwischen erster (52) und zweiter (54) Schicht der absorbierenden Fasern angeordnet ist.
EP12184937.6A 2011-09-20 2012-09-19 Saugfähiges Fasermaterial und Herstellungsverfahren dafür Active EP2573242B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15170904.5A EP2930260B1 (de) 2011-09-20 2012-09-19 Saugfähiges fasermaterial und verfahren zur herstellung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US13/236,788 US8695185B2 (en) 2011-09-20 2011-09-20 Method for making a fibrous absorbent material
US13/236,799 US20130072891A1 (en) 2011-09-20 2011-09-20 Fibrous absorbent material

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EP15170904.5A Division EP2930260B1 (de) 2011-09-20 2012-09-19 Saugfähiges fasermaterial und verfahren zur herstellung
EP15170904.5A Division-Into EP2930260B1 (de) 2011-09-20 2012-09-19 Saugfähiges fasermaterial und verfahren zur herstellung

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EP2573242A1 EP2573242A1 (de) 2013-03-27
EP2573242B1 true EP2573242B1 (de) 2016-05-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10590577B2 (en) 2016-08-02 2020-03-17 Fitesa Germany Gmbh System and process for preparing polylactic acid nonwoven fabrics
US11441251B2 (en) 2016-08-16 2022-09-13 Fitesa Germany Gmbh Nonwoven fabrics comprising polylactic acid having improved strength and toughness

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CN105624917B (zh) * 2014-11-26 2018-02-09 聚隆纤维股份有限公司 使用短纤纺丝方式制备具有吸湿转移性不织布的方法
GB2599642A (en) 2020-10-02 2022-04-13 Teknoweb Mat S P A Spunlace composite web comprising staple fibers, short absorbent fibers and binder

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GR1002212B (en) * 1991-07-26 1996-03-28 Mcneil Ppc Inc Clean dry facing needled composite.
US5928973A (en) * 1997-09-29 1999-07-27 American Nonwovens Corporation Nonwoven needlepunch fabric and articles produced therefrom
DE102007028039B4 (de) * 2007-06-14 2017-05-11 Carl Freudenberg Kg Reinigungsartikel und dessen Verwendung
US20110150558A1 (en) * 2009-12-18 2011-06-23 Bissah Kofi A Product dispenser and absorbent article kit

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Publication number Priority date Publication date Assignee Title
US10590577B2 (en) 2016-08-02 2020-03-17 Fitesa Germany Gmbh System and process for preparing polylactic acid nonwoven fabrics
US11441251B2 (en) 2016-08-16 2022-09-13 Fitesa Germany Gmbh Nonwoven fabrics comprising polylactic acid having improved strength and toughness

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CA2790429A1 (en) 2013-03-20
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EP2930260A1 (de) 2015-10-14
CA2790429C (en) 2021-11-30
EP2573242A1 (de) 2013-03-27

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