US20060191116A1 - Biodegradable nonwovens - Google Patents

Biodegradable nonwovens Download PDF

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Publication number
US20060191116A1
US20060191116A1 US11/408,847 US40884706A US2006191116A1 US 20060191116 A1 US20060191116 A1 US 20060191116A1 US 40884706 A US40884706 A US 40884706A US 2006191116 A1 US2006191116 A1 US 2006191116A1
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Prior art keywords
nonwoven
covering layers
packaging
biodegradable
manufacture
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Abandoned
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US11/408,847
Inventor
Frederic Noelle
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Individual
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Individual
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Priority to US11/408,847 priority Critical patent/US20060191116A1/en
Publication of US20060191116A1 publication Critical patent/US20060191116A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K7/00—Body washing or cleaning implements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/02—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling
    • D04H5/03—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by mechanical methods, e.g. needling by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
    • D04H5/06—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by welding-together thermoplastic fibres, filaments, or yarns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2329/00—Polyvinylalcohols, polyvinylethers, polyvinylaldehydes, polyvinylketones or polyvinylketals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/66—Additional nonwoven fabric is a spun-bonded fabric
    • Y10T442/663—Hydroentangled
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/666—Mechanically interengaged by needling or impingement of fluid [e.g., gas or liquid stream, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/659—Including an additional nonwoven fabric
    • Y10T442/668—Separate nonwoven fabric layers comprise chemically different strand or fiber material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/689—Hydroentangled nonwoven fabric
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/695—Including a wood containing layer

Definitions

  • the present invention relates to nonwovens and more particularly to biodegradable nonwovens.
  • Biodegradable nonwovens made of viscose or wood fibre viscose are already known. These nonwovens do not have good mechanical strength, nor abrasion resistance, particularly in the wet state, either. They are ill suited for applications as wipes, dry or wet toilet paper, and other applications of hygiene products.
  • a method for making a biodegradable nonwoven which comprises water-jet entangling covering layers of continuous filaments with a filament count between 0.5 and 3 decitex of polylactic acid on both sides of a core layer of non-thermally bonded wood fibers with a length of 2 to 7 mm, wherein the covering layers represents less than 50% by weight of the nonwoven.
  • the method of manufacture further comprises packaging the nonwoven in a packaging, wherein a preservative is placed in the packaging.
  • the method of manufacture further comprises impregnating the nonwoven with an aqueous solution.
  • the method of manufacture further comprises bonding the layers in the nonwoven together by calendering.
  • FIG. 1 shows a cross section of one embodiment of a nonwoven in accordance with the present invention.
  • the present invention alleviates this drawback by providing a biodegradable nonwoven that has a mechanical strength and an abrasion resistance that are sufficient for the abovementioned uses, but which however is inexpensive to manufacture.
  • the nonwoven according to the invention comprises a core layer made of a cellulose material, especially wood fibres, on both sides of which are applied covering layers made of a synthetic or artificial material.
  • the covering layers consist of continuous filaments of polylactic acid (PLA) or polyvinyl alcohol (PVA).
  • the covering layers are biodegradable, as is, by its very nature, the wood fibre core.
  • the composite thus obtained is much more biodegradable than a viscose nonwoven.
  • this continuity of material gives mechanical strength, especially tear strength and abrasion resistance, to a point such that it may be possible to be content with a small polylactic acid or polyvinyl alcohol content, which may especially represent less than 50% of the weight of the nonwoven, and preferably less than 30% of this weight.
  • the core layer is bonded to the covering layers either by calendering or, preferably, by fluid jet entanglement, or by calendering followed by fluid-jet entanglement, or by fluid-jet entanglement followed by calendering.
  • the nonwoven may have raised or depressed features obtained by calendering or by water-jet entanglement.
  • the covering layers are spun bond webs.
  • the nonwoven has a thickness generally between 0.30 and 1.5 mm and a weight per square metre between 25 g/m2 and 100 g/m2.
  • the filaments have a filament count between 0.5 and 3 decitex and better still between 0.8 and 2 decitex.
  • the wood fibres have a length of 2 to 7 mm, preferably 3 to 5 mm.
  • the filaments are made of polyvinyl alcohol of a grade capable of dissolving in water at a temperature of more than 70° C. It is thus possible to convert the nonwoven into a liquid waste, this being easier to get rid of than solid waste.
  • the nonwoven is dispersible in hot water, the wood fibres, after the polyvinyl alcohol that holds them together has been dissolved, in turn dispersing in the water.
  • a preservative may be placed in the packaging for the nonwoven, or it may be added to an aqueous solution for impregnating the nonwoven. The solution may represent from 50 to 800% by weight of the dry nonwoven.
  • the nonwoven has a thickness between 0.4 mm and 1 mm and a symmetrical structure, the core layer having, for example, a thickness of between 0.25 and 0.7 mm.
  • the nonwoven shown in the drawing comprises a core layer 1 made of wood fibres on both sides of which are bonded, by water-jet entanglement, covering layers 2 , 3 made of polyvinyl alcohol.
  • the covering layers 2 , 3 themselves represent 30% by weight of the nonwoven.
  • the covering layers are made of continuous polyvinyl alcohol filaments with a filament count of 2 decitex.
  • This nonwoven may be impregnated with a solution, especially an aqueous solution, in which case a preservative is added to the solution in an amount sufficient to prevent bacterial growth.
  • a preservative may be used as preservative.

Abstract

Nonwoven comprising a core layer made of wood fibres, wherein covering layers comprising continuous polylactic acir or polyvinyl alcohol filaments are applied on both sides of the core layer. The nonwoven is biodegradable.

Description

    CROSS-REFERENCE TO RELATED APPLICATIONS
  • This application is a divisional of related U.S. application Ser. No. 10/876507 filed on Jun. 25, 2004 which claims priority to France Patent Application FR 03 07946 filed on Jul. 1, 2003. The disclosures of the above-described filed applications are hereby incorporated by reference in their entirety.
    • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention relates to nonwovens and more particularly to biodegradable nonwovens.
  • 2. Description of the Related Art
  • Biodegradable nonwovens made of viscose or wood fibre viscose are already known. These nonwovens do not have good mechanical strength, nor abrasion resistance, particularly in the wet state, either. They are ill suited for applications as wipes, dry or wet toilet paper, and other applications of hygiene products.
    • SUMMARY OF THE INVENTION
  • In one embodiment, a method for making a biodegradable nonwoven, which comprises water-jet entangling covering layers of continuous filaments with a filament count between 0.5 and 3 decitex of polylactic acid on both sides of a core layer of non-thermally bonded wood fibers with a length of 2 to 7 mm, wherein the covering layers represents less than 50% by weight of the nonwoven.
  • In some embodiments of the present invention the method of manufacture further comprises packaging the nonwoven in a packaging, wherein a preservative is placed in the packaging.
  • In some embodiments of the present invention the method of manufacture further comprises impregnating the nonwoven with an aqueous solution.
  • In some embodiments of the present invention the method of manufacture further comprises bonding the layers in the nonwoven together by calendering.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows a cross section of one embodiment of a nonwoven in accordance with the present invention.
    • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
  • The present invention alleviates this drawback by providing a biodegradable nonwoven that has a mechanical strength and an abrasion resistance that are sufficient for the abovementioned uses, but which however is inexpensive to manufacture.
  • The nonwoven according to the invention comprises a core layer made of a cellulose material, especially wood fibres, on both sides of which are applied covering layers made of a synthetic or artificial material. The covering layers consist of continuous filaments of polylactic acid (PLA) or polyvinyl alcohol (PVA).
  • Because of the nature of the continuous polylactic acid or polyvinyl alcohol filaments, the covering layers are biodegradable, as is, by its very nature, the wood fibre core. The composite thus obtained is much more biodegradable than a viscose nonwoven. However, since the covering layers consist of continuous filaments, this continuity of material gives mechanical strength, especially tear strength and abrasion resistance, to a point such that it may be possible to be content with a small polylactic acid or polyvinyl alcohol content, which may especially represent less than 50% of the weight of the nonwoven, and preferably less than 30% of this weight.
  • The core layer is bonded to the covering layers either by calendering or, preferably, by fluid jet entanglement, or by calendering followed by fluid-jet entanglement, or by fluid-jet entanglement followed by calendering.
  • Optionally, the nonwoven may have raised or depressed features obtained by calendering or by water-jet entanglement.
  • Preferably, the covering layers are spun bond webs. The nonwoven has a thickness generally between 0.30 and 1.5 mm and a weight per square metre between 25 g/m2 and 100 g/m2.
  • Preferably, the filaments have a filament count between 0.5 and 3 decitex and better still between 0.8 and 2 decitex.
  • The wood fibres have a length of 2 to 7 mm, preferably 3 to 5 mm.
  • According to a preferred embodiment, the filaments are made of polyvinyl alcohol of a grade capable of dissolving in water at a temperature of more than 70° C. It is thus possible to convert the nonwoven into a liquid waste, this being easier to get rid of than solid waste. The nonwoven is dispersible in hot water, the wood fibres, after the polyvinyl alcohol that holds them together has been dissolved, in turn dispersing in the water. A preservative may be placed in the packaging for the nonwoven, or it may be added to an aqueous solution for impregnating the nonwoven. The solution may represent from 50 to 800% by weight of the dry nonwoven.
  • In particular, the nonwoven has a thickness between 0.4 mm and 1 mm and a symmetrical structure, the core layer having, for example, a thickness of between 0.25 and 0.7 mm.
  • The single figure of the appended drawing illustrates the invention.
  • The nonwoven shown in the drawing comprises a core layer 1 made of wood fibres on both sides of which are bonded, by water-jet entanglement, covering layers 2, 3 made of polyvinyl alcohol. The covering layers 2, 3 themselves represent 30% by weight of the nonwoven. The covering layers are made of continuous polyvinyl alcohol filaments with a filament count of 2 decitex. This nonwoven may be impregnated with a solution, especially an aqueous solution, in which case a preservative is added to the solution in an amount sufficient to prevent bacterial growth. For example, Bronopol may be used as preservative.

Claims (4)

1. A method for making a biodegradable nonwoven, which comprises water-jet entangling covering layers of continuous filaments with a filament count between 0.5 and 3 decitex of polylactic acid on both sides of a core layer of non-thermally bonded wood fibers with a length of 2 to 7 mm, wherein the covering layers represents less than 50% by weight of the nonwoven.
2. The method of manufacture of claim 1 further comprising packaging the nonwoven in a packaging, wherein a preservative is placed in the packaging.
3. The method of manufacture of claim 1 further comprising impregnating the nonwoven with an aqueous solution.
4. The method of manufacture of claim 1 further comprising bonding the layers in the nonwoven together by calendering.
US11/408,847 2003-07-01 2006-04-21 Biodegradable nonwovens Abandoned US20060191116A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/408,847 US20060191116A1 (en) 2003-07-01 2006-04-21 Biodegradable nonwovens

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0307946 2003-07-01
FR0307946A FR2856952B1 (en) 2003-07-01 2003-07-01 BIODEGRADABLE NONTISSE
US10/876,507 US20050003720A1 (en) 2003-07-01 2004-06-25 Biodegradable nonwovens
US11/408,847 US20060191116A1 (en) 2003-07-01 2006-04-21 Biodegradable nonwovens

Related Parent Applications (1)

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US10/876,507 Division US20050003720A1 (en) 2003-07-01 2004-06-25 Biodegradable nonwovens

Publications (1)

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US20060191116A1 true US20060191116A1 (en) 2006-08-31

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US10/876,507 Abandoned US20050003720A1 (en) 2003-07-01 2004-06-25 Biodegradable nonwovens
US11/408,847 Abandoned US20060191116A1 (en) 2003-07-01 2006-04-21 Biodegradable nonwovens

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EP (1) EP1493555B1 (en)
AT (1) ATE452020T1 (en)
DE (1) DE602004024618D1 (en)
ES (1) ES2334442T3 (en)
FR (1) FR2856952B1 (en)
PL (1) PL1493555T3 (en)

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FR2899245B1 (en) * 2006-03-28 2009-07-03 Rieter Perfojet Sa NON-WOVEN RESISTANT AND LEAVING.
US20080076314A1 (en) * 2006-09-26 2008-03-27 John James Blanz Wipe and methods for manufacturing and using a wipe
US20080076313A1 (en) * 2006-09-26 2008-03-27 David Uitenbroek Wipe and methods for manufacturing and using a wipe
FI20095800A0 (en) * 2009-07-20 2009-07-20 Ahlstroem Oy Nonwoven composite product with high cellulose content
US20170282524A1 (en) * 2016-04-04 2017-10-05 The Procter & Gamble Company Layered Fibrous Structures with Different Common Intensive Properties
WO2018025209A1 (en) 2016-08-02 2018-02-08 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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FR2856952B1 (en) 2006-09-01
ES2334442T3 (en) 2010-03-10

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