EP1126065B1 - Non-tissé monocouche abrasif double face et son procédé de fabrication - Google Patents

Non-tissé monocouche abrasif double face et son procédé de fabrication Download PDF

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Publication number
EP1126065B1
EP1126065B1 EP01102686A EP01102686A EP1126065B1 EP 1126065 B1 EP1126065 B1 EP 1126065B1 EP 01102686 A EP01102686 A EP 01102686A EP 01102686 A EP01102686 A EP 01102686A EP 1126065 B1 EP1126065 B1 EP 1126065B1
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EP
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Prior art keywords
mixture
polymers
nonwoven fabric
abrasive
fabric according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01102686A
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German (de)
English (en)
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EP1126065A2 (fr
EP1126065A3 (fr
Inventor
Martin Büchsel
Jean Martin Brink
Jean Marc Dellenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schoeller und Hoesch GmbH
Glatfelter Gernsbach GmbH and Co KG
Original Assignee
Papierfabrik Schoeller and Hoesch GmbH and Co KG
Schoeller und Hoesch GmbH
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Publication of EP1126065A3 publication Critical patent/EP1126065A3/fr
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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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/724—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged forming webs during fibre formation, e.g. flash-spinning
    • 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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • 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
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
    • D04H1/43838—Ultrafine fibres, e.g. microfibres
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/007—Addition polymers
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the invention relates to a single-layer abrasive nonwoven fabric, a process for producing the same and the use of such a single-layer abrasive nonwoven fabric.
  • the nonwoven according to the invention exhibits improved properties in terms of abrasiveness, memory behavior and the variation of its properties in comparison to the nonwovens of the prior art with simple production.
  • the dried polymer granules are transported from the storage container (12) into an extruder (13) in which it is heated and melted to the required temperature, which is necessary for fiber formation and depends on the particular polymer.
  • the molten polymer then reaches the meltblown nozzle (14).
  • the fibers (15) are detected directly below the nozzle of a strong air flow, torn into different lengths and placed on a suction roll (17).
  • the diameter of the fibers is about 0.3 to 20.0 microns depending on the polymer used and other polymer and process parameters.
  • the still warm fibers merge into a fleece.
  • the filing takes place in different statistically distributed lengths, thicknesses and directions. Subsequently, the now cooled material is rolled up on a winder (18).
  • Nonwovens produced by this technology can be characterized by their softness, high absorbency, good air permeability and low resistance to abrasion.
  • Typical fields of application of such meltblown nonwovens are, for example, filter media, wipes or oil absorption materials.
  • Lamers et al. describe in the US-A-4,659,609 an abrasive fabric and a method of making the same.
  • the abrasive fabric described in this patent is a two-ply nonwoven consisting of a backing layer and an abrasive meltblown layer which have been thermally bonded together.
  • the basis weight of the abrasive meltblown layer is reported as being between 5 and 25 g / m 2 , the average fiber diameter of the meltblown layer forming fibers being at least 40 ⁇ m.
  • a carrier layer a spunbonded polypropylene is normally used. In this case, the strength and elongation necessary for the use of the fabric produced and, moreover, the absorption capacity for a tanning solution are provided by the carrier layer.
  • each a meltblown layer of microfibers and macrofibers thermally connected is thermally connected.
  • the disadvantage of this method is the production costs for the production of two layers and their connection, for example via hot calendering.
  • a second nozzle bar with extruder or a second extruder with a special nozzle bar is necessary, wherein the nozzle bar has two separate feeders which feed separate nozzles.
  • the WO 97/21865 (Annis et al. ) describes a wet mat which has in a single layer a surface abrasive layer produced by thermal coagulation of thermoplastic fibers. Disadvantage of this method is the insufficient strength in the Stress, as well as the observed gradient of the melt fibers. Therefore, this wet fleece shows only on one side an abrasive effect.
  • the DE 24 38 918 A1 describes a process for making nonwoven fibrous webs from thermoplastic polymers by meltblowing the polymer to form fibers and combining the fibers into a mat characterized by introducing into the mat fibrous elements of relatively fine dimension and fibrous elements of relatively large size.
  • the present invention furthermore relates to a process for producing such a single-layer, abrasive nonwoven according to claim 8. Preferred embodiments of this process are described in subclaim 9.
  • single-ply abrasive nonwovens can be produced in which the phenomenon of subsequent embrittlement of thick meltblown fibers is further improved by using further polymers and, if appropriate, additives and, if desired, higher strength and elongation values are achieved.
  • These other polymers may be, for example, polyethylene, polyethylene / polypropylene copolymer or a polypropylene block polymer in a proportion (usually 30% or less, based on the polypropylene block polymer) of a rubbery phase consisting of equal parts of ethylene and propylene ,
  • These polymers are usually added to the mixtures in amounts of from 0.1 to 20% by weight, preferably from 0.2 to 10% by weight, in particular from 0.5 to 8% by weight, based in each case on the weight of the entire mixture, added.
  • surfactants such as alkylbenzenesulfonates, alkanesulfonates, fatty alcohol sulfonates, fatty alcohol ether sulfates, ⁇ -olefin sulfonates, ⁇ -ester sulfonates, Alkyl phosphates, alkyl ether phosphates, fur alcohol ethoxylates, alkyl phenol ethoxylates, fatty amine ethoxylates, fatty acid ethoxylates, fatty acid ester ethoxylates, alkoxylates, alkanolamides, sugar surfactants, amine oxides, cationic surfactants and amphoteric surfactants, especially nonionic fluorocarbon surfactants, and / or primary and secondary antioxidants such as hindered phenols, sulfides, polysulfides, dithiocarbamates , Phosphites, phosphonites, diphosphonites
  • the additives are usually added to the mixtures in amounts of from 0.01 to 15% by weight, preferably from 0.01 to 10% by weight, in particular in amounts of from 0.1 to 5% by weight, based in each case on the weight of entire mixture, added.
  • the additives and / or polymers may be blended into the blends prior to entry into the extruder or the individual ingredients (i.e., the various polymers) may be added to the extruder as individual ingredients along with the additives.
  • the additives can also be sprayed onto the fibers after the spinning process.
  • Important process parameters in this context are the following: extruder temperature, melt temperature, jet bar temperature, melt flow rate and pressure, air temperature, air flow, nozzle bar design, collector bar spacing, collector negative pressure, collector speed, basis weight of the resulting bar Fleece and treatment with aerosolized water, optionally containing additives.
  • melt index is a measure of the melt viscosity at a specified temperature of thermoplastic polymers and indicates the amount of material that passes through a defined nozzle in 10 minutes under the action of a given force at a specified temperature.
  • MFI is also a rough indicator of molecular weight and molecular weight distribution.
  • Bugada points in her Review "Optimizing polymer properties for process and product performance", published in Nonwovens World, August-September 1999, p. 89ff suggest that at nearly the same MFIs, the molecular weight can vary significantly and vice versa.
  • the fiber thickness of the microfibers is according to the invention in a range of 1 to 10 microns, preferably in a range of 2 to 8 microns, and in particular in a range of 3 to 7 microns.
  • the fiber thickness of the macrofibers is according to the invention in a range of 15 to 80 microns, preferably in a range of 20 to 60 microns, and in particular in a range of 30 to 50 microns.
  • the fiber diameter of the fibers occurring in the abrasive nonwoven fabric according to the invention can be determined by scanning electron microscopic (SEM) examination.
  • the resulting breaking force is 22 N / 50mm in the machine direction and 12 N / 50mm across the machine direction.
  • the elongation at break is almost 50% in the machine direction and just over 50% across the machine direction.
  • An abrasive web having a basis weight of 45 g / m 2 was made from a blend of 80% isotactic polypropylene containing no residual peroxide and having a melt index of 450 g / 10 min and 20% polypropylene block polymer as in Example 1 was used, at 233 ° C temperature of the melt prepared (see Example 1).
  • a hydrophilizing agent (a commercial nonionic fluorochemical surfactant) was sprayed onto the fibers in an amount of ... after the spinning process.
  • the achieved breaking force is 17 N / 50mm in the machine direction and 13 N / 50mm across the machine direction.
  • the elongation at break is just under 45% in the machine direction and over 70% across the machine direction.
  • An abrasive web having a basis weight of 45 g / m 2 was made from a blend of 79% isotactic polypropylene containing no residual peroxide and having a melt index of 450 g / 10 min, 20% polypropylene block polymer having a 10% rubber phase and a melt index of 100 g / 10 min (as described in Example 1) and 1% of a hydrophilizing agent consisting of a commercial nonionic fluorochemical surfactant, prepared at 233 ° C melt temperature.
  • the achieved breaking force is 18 N / 50 mm in the machine direction and 13 N / 50 mm across the machine direction.
  • the elongation at break is almost 80% in the machine direction and over 90% across the machine direction.
  • Examples 1 to 3 show that the addition of hydrophilizing agents positively affects the elongation at break. At the same time, they lower the surface energy of the nonwoven and allow improved water retention.

Claims (10)

  1. Non-tissé monocouche, abrasif des deux côtés, obtenu par un procédé de soufflage à l'état fondu (meltblown), qui comporte un mélange uniforme de microfibres d'un diamètre de fibres de 1 à 10 µm et de macrofibres d'un diamètre de fibres de 15 à 50 µm et présente un poids par unité de surface compris entre 15 et 150 g/m2, les polymères consistant en un mélange d'un homopolymère et d'au moins un copolymère, resp. terpolymère, ou en un mélange d'au moins deux copolymères resp. terpolymères et la différence des indices de fusion des polymères étant d'au moins 50 unités (g/10 min), caractérisé en ce que le mélange de polymères contient entre 5 % et 40 % d'un polymère bloc avec un indice de fusion compris entre 50 et 200 g/10 min, rapportés au poids total du mélange de polymères.
  2. Non-tissé abrasif selon la revendication 1, caractérisé en ce que les polymères utilisés sont choisis parmi les polyoléfines, les polyesters, les polyamides, les polyesteramides et les copolymères de ceux-ci.
  3. Non-tissé abrasif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que le poids par unité de surface du non-tissé est compris entre 25 et 80 g/m2.
  4. Non-tissé abrasif selon l'une quelconque des revendications 1 à 3 caractérisé en ce que les indices de fusion des polymères utilisés sont compris entre 50 et 1.600 g/10 min.
  5. Non-tissé abrasif selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il contient en outre des additifs en une quantité de 0,01 à 15 % en poids, rapportés au poids total du mélange de polymères.
  6. Non-tissé abrasif selon l'une quelconque des revendications 1 à 5, caractérisé en ce que comme additifs, on utilise un ou plusieurs composants qui sont choisis parmi des agents d'hydrophilisation, des pigments et des colorants, des stabilisateurs contre la décomposition oxydative et des désinfectants.
  7. Non-tissé abrasif selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la force de rupture est d'au moins 10 N/50 mm dans la direction de la machine et transversalement par rapport à la direction de la machine et qu'en même temps l'allongement à la rupture dans la direction de la machine et transversalement par rapport à la direction de la machine est d'au moins 15 %.
  8. Procédé pour la fabrication d'un non-tissé abrasif selon l'une quelconque des revendications ci-dessus dans le cadre d'un procédé de soufflage à l'état fondu (meltblown), qui comprend les étapes suivantes :
    - alimentation d'une extrudeuse en un mélange de polymères de différents indices de fusion, sachant que la différence des indices de fusion est d'au moins 50 unités (g/10 min), et le cas échéant en additifs utilisés en même temps, sachant que le mélange de polymères contient entre 5 % et 40 %, rapportés au poids total du mélange de polymères, d'un polymère en masse avec un indice de fusion compris entre 50 et 200 g/10 min ;
    - extrusion du mélange, lors de laquelle la température de sortie de l'extrudeuse est comprise dans un intervalle de 180 à 300 °C,
    - acheminement de l'extrudat vers des filières,
    - filature de l'extrudat et
    - dépôt des fibres filées sur un collecteur.
  9. Procédé selon la revendication 8, caractérisé en ce que le mélange de polymères contient en outre des additifs en une quantité de 0,01 à 15 % en poids, rapportés au poids total du mélange de polymères.
  10. Utilisation d'un non-tissé abrasif selon l'une quelconque des revendications 1 à 7 pour le nettoyage de surfaces souillées.
EP01102686A 2000-02-08 2001-02-07 Non-tissé monocouche abrasif double face et son procédé de fabrication Expired - Lifetime EP1126065B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10005454 2000-02-08
DE10005454A DE10005454B4 (de) 2000-02-08 2000-02-08 Einlagiges, beidseitig abrasives Vlies und Verfahren zu dessen Herstellung

Publications (3)

Publication Number Publication Date
EP1126065A2 EP1126065A2 (fr) 2001-08-22
EP1126065A3 EP1126065A3 (fr) 2005-10-19
EP1126065B1 true EP1126065B1 (fr) 2010-04-14

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EP (1) EP1126065B1 (fr)
AT (1) ATE464413T1 (fr)
DE (2) DE10005454B4 (fr)
ES (1) ES2342653T3 (fr)

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CN102762370B (zh) 2009-12-17 2015-11-25 3M创新有限公司 尺寸稳定的非织造纤维幅材及其制造和使用方法
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CN103552326B (zh) * 2013-10-28 2015-11-04 深圳市中纺滤材无纺布有限公司 一种具有杀菌除臭去甲醛作用的多功能湿帘及其加工方法
CN110234804A (zh) * 2017-01-27 2019-09-13 东丽株式会社 纺粘无纺布
CN114318675A (zh) * 2021-12-31 2022-04-12 阳光卫生医疗科技江阴有限公司 一种高清洁力百洁布及制备方法

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CN103696130A (zh) * 2013-11-25 2014-04-02 芜湖跃飞新型吸音材料股份有限公司 一种环保无纺布吸音棉及其制备方法

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ES2342653T3 (es) 2010-07-12
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ATE464413T1 (de) 2010-04-15
DE10005454A1 (de) 2001-08-16
DE50115430D1 (de) 2010-05-27

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