EP1937886B1 - Elastic, soft and punctiformly bound non-woven fabric provided with filler particles and method for production and the use thereof - Google Patents

Elastic, soft and punctiformly bound non-woven fabric provided with filler particles and method for production and the use thereof Download PDF

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Publication number
EP1937886B1
EP1937886B1 EP06724625A EP06724625A EP1937886B1 EP 1937886 B1 EP1937886 B1 EP 1937886B1 EP 06724625 A EP06724625 A EP 06724625A EP 06724625 A EP06724625 A EP 06724625A EP 1937886 B1 EP1937886 B1 EP 1937886B1
Authority
EP
European Patent Office
Prior art keywords
nonwoven fabric
fibres
filaments
binder
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.)
Not-in-force
Application number
EP06724625A
Other languages
German (de)
French (fr)
Other versions
EP1937886A1 (en
Inventor
Peter Grynaeus
Hans Rettig
Oliver Staudenmayer
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to PL06724625T priority Critical patent/PL1937886T3/en
Publication of EP1937886A1 publication Critical patent/EP1937886A1/en
Application granted granted Critical
Publication of EP1937886B1 publication Critical patent/EP1937886B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D04H3/14—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 yarns or filaments produced by welding
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
    • 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
    • D04H1/4391—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 characterised by the shape of the 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
    • 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
    • D04H1/50—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 treatment to produce shrinking, swelling, crimping or curling 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
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently
    • D04H1/62—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently at spaced points or locations
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/66—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions at spaced points or locations
    • 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
    • D04H3/12—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 filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D2400/00—Functions or special features of garments
    • A41D2400/10—Heat retention or warming
    • 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
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • 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
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    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2915—Rod, strand, filament or fiber including textile, cloth or 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
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    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, 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
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    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2922—Nonlinear [e.g., crimped, coiled, etc.]
    • Y10T428/2924—Composite
    • 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
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    • 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
    • Y10T442/2418—Coating or impregnation increases electrical conductivity or anti-static quality
    • 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
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    • 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
    • Y10T442/2861—Coated or impregnated synthetic organic fiber 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/601—Nonwoven fabric has an elastic quality
    • Y10T442/602—Nonwoven fabric comprises an elastic 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/629—Composite 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/632—A single nonwoven layer comprising non-linear synthetic polymeric strand or fiber material and strand or fiber material not specified as non-linear
    • 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
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    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/632—A single nonwoven layer comprising non-linear synthetic polymeric strand or fiber material and strand or fiber material not specified as non-linear
    • Y10T442/633—Synthetic polymeric strand or fiber material is of staple length
    • 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
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    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/635—Synthetic polymeric 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
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    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/608—Including strand or fiber material which is of specific structural definition
    • Y10T442/627—Strand or fiber material is specified as non-linear [e.g., crimped, coiled, etc.]
    • Y10T442/635—Synthetic polymeric strand or fiber material
    • Y10T442/636—Synthetic polymeric strand or fiber material is of staple length
    • 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
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    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/637—Including strand or fiber material which is a monofilament composed of two or more polymeric materials in physically distinct relationship [e.g., sheath-core, side-by-side, islands-in-sea, fibrils-in-matrix, etc.] or composed of physical blend of chemically different polymeric materials or a physical blend of a polymeric material and a filler 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
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    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/697—Containing at least two chemically different strand or fiber materials
    • 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
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    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/699—Including particulate material other than strand or fiber material

Definitions

  • the present invention relates to a nonwoven fabric, which is particularly suitable as a liner material, a process for its preparation and its use for the production of deposits.
  • EP-A-178.372 discloses a drapeable microporous multi-layer nonwoven fabric for medical applications.
  • the middle layer consists of microfibers and is covered on both sides with nonwovens.
  • the individual layers are connected by a pattern-shaped binder paste, for example a paraffin emulsion.
  • Nonwovens which contain patterned and preferably foamed microspheres and which can be used as reinforcing materials for plastics.
  • the US-A-5,366,801 or the EP-A-611.330 describe coating a fabric with a binder and microcapsules dispersed therein containing a latent heat storage material.
  • thermoregulatory properties imparting material is distributed throughout the interior of the nonwoven fabric.
  • the entire nonwoven fabric is impregnated with the material. This is done by impregnating the formed nonwoven fabric with the binder.
  • Nonwovens, ie mechanically stabilized / bonded materials, are used as starting materials.
  • the coated material consists of a substrate provided on a part of its surface with binder points or with applications of binders containing temperature-regulating materials.
  • the binders may be applied on the surface or penetrate into the interior of the substrate and penetrate this partially or completely. In any case, part of the surface is not impregnated with binder.
  • Various coated substrates are described, for example, fabrics, nonwovens, films, foams and papers.
  • US 4,748,044 and WO 03/056086 disclose an elastic nonwoven fabric having crimped fibers and / or crimped filaments and which is solidified at selected locations with a binder and is not solidified at further selected locations.
  • nonwovens are produced by subsequently forming a nonwoven fabric after the formation of a fibrous web of a mechanically unstable surface ("web formation") (cf., for example, US Pat Nonwovens, edited by W. Albrecht, H. Fuchs and W. Kittelmann, Wiley-VCH (2000), Part II, Nonwoven Fabrics Production Methods, Chap. 6, nonwoven bonding ).
  • Typical methods of web bonding are chemical processes, such as application of a binder, or physical processes (mechanical and / or thermal processes), such as needling, swirling, treatment with hot air or calendering. These processes are directly followed by the web forming process to convert the mechanically very unstable web into a handleable form.
  • nonwoven fabrics are understood to mean processed layers, nonwovens or battings of directionally arranged or randomly bonded fibers, solidified by friction and / or cohesion and / or adhesion (as defined in ISO 9092 or EN 29 092).
  • DE-A-29 14 617 describes a method for uniform and continuous printing of pastes on the front and back of textile fabrics.
  • a carding produced by carding is passed through a calender and thereby pre-consolidated.
  • a binder dispersion is applied on both sides in the form of a pattern on this textile fabric by means of rollers and then dried and the binder is crosslinked.
  • nonwovens with thermo-regulating properties have been produced by aftertreatment of nonwovens, ie of bonded, mechanically stabilized textile surfaces, with thermo-regulating materials.
  • the elasticity and softness of these nonwovens can - in some cases leave something to be desired - due to the upstream solidification step.
  • the object of the present invention is to provide a nonwoven fabric provided with filling material which, in addition to high elasticity, also has a high degree of softness. This makes it possible to produce textiles with improved fit and comfort.
  • Another object of the present invention was to provide an improved manufacturing method for fillers Nonwovens, in which the upstream step of the nonwoven bonding can be omitted and thus allows the production of nonwoven fabrics with reduced effort.
  • the present invention relates to a nonwoven fabric comprising crimped and optionally uncurled fibers and / or filaments which is solidified at selected locations with a binder containing particles of filler material and which is not solidified at further selected locations.
  • a sheet is produced which is not solidified in selected surface areas, which has thus experienced no web formation in these areas.
  • the presence of non-solidified areas improves the permeability, elasticity and feel of the nonwoven fabric.
  • heat-curable fibers or filaments are used in the manufacture of the batt.
  • the batt additionally contains non-crimped and non-crimpable or non-crimpable fibers or filaments under the processing conditions.
  • the nonwoven fabric according to the invention thus has crimped fibers and / or filaments and preferably also non-crimped fibers and / or filaments.
  • fibers are threads of finite length (staple fibers), ie threads with lengths up to the decimeter range.
  • Filaments in the context of this description are threads of virtually infinite length, ie threads with lengths above the decimeter range.
  • bicomponent fibers or filaments can be used to circumvent the problems of the products currently known in the art.
  • Bicomponent fibers or filaments have long been used in nonwoven fabric production. They can be used as core-sheath fibers or filaments with a lower melting sheath component as a binder fiber in the thermal consolidation of nonwoven fabrics - surface or punctiform - (cf., for example, US Pat. Nonwovens, edited by W. Albrecht, H. Fuchs and W. Kittelmann, Wiley-VCH (2000), Chap. 1.2, Manmade fibers - bicomponent fibers, p. 63 ).
  • the bicomponent fibers or filaments used are not used because of the adhesive / bonding properties of lower-melting components.
  • bicomponent fibers or filaments of polymer components having similar melting points can be used; these are so constructed, for example in side-by-side arrangement or in asymmetric core-shell arrangement, that their heat treatment causes different shrinkage along the fiber or filament axis.
  • the proportion of these crimpable fibers or filaments used in nonwoven fabric production causes an in situ contraction of the batt on exposure to temperature before the printing unit.
  • the curling fibers or filaments result in an improvement of the inner cohesion of the batt, thereby substantially facilitating the printability of the nonwoven fabric.
  • the nonwoven fabric volume and elasticity are to be chosen so that the treatment temperature remains below the melting or softening temperature of the lower melting or softening polymer of the multicomponent fiber, so that the heat treatment causes the crimp but does not cause adhesion.
  • the imprinted binder dots By triggering the crimping during the production of the nonwoven fabric according to the invention, the imprinted binder dots also gain in volume and softness, since the crimping fibers or filaments do not form any compact dots in the fiber matrix. Foaming the binder points is not necessary, but can take place.
  • Nonwovens containing two-dimensionally or three-dimensionally crimped fibers and / or filaments are preferred for achieving a particularly soft and elastic fabric.
  • the fibrous webs used according to the invention can consist of any desired fiber types of the most varied titer ranges, for example the titre of 0.5 to 10 dtex, preferably of 0.8 to 6.7 dtex, in particular of 1.3 to 3.3 dtex.
  • the fiber mixture should contain at least 5% by weight, preferably at least 20% by weight, of curled fibers or filaments. These may be heterofil fibers / bicomponent fibers or special homofil fibers (or the corresponding filaments).
  • the other fibers may be the usual in nonwoven fabric staple fibers or filaments.
  • the fibrous webs used according to the invention may have been produced using different web-forming techniques. Primary are carded, dry laid bobbin addressed. Direct fiber laying techniques according to the spunbonded fabric process or the melt-blown process are also possible.
  • Fibers made of staple fibers are particularly preferably used.
  • the fibers of the fibrous webs used may be isotropic or in a preferred direction, i. anisotropic, have been filed.
  • the batt may consist of equal or different titers of the same fiber.
  • the fibers constituting the batt may be composed of a wide variety of fibers, for example of homofil fibers, but also of 100% bicomponent fibers or a blend of bicomponent fibers and homofil fibers. It is also possible to use mixtures of synthetic fibers with natural fibers.
  • polyester homofil fibers e.g. Homopolyester fiber 1.7dtex / 38mm or 3,3dtex / 51mm blended with polyester bicomponent fibers, such as polyester-side-by-side bicomponent fibers. It is also possible to use polyamide fibers, for example of PA 66, 3d / 1.5 ", in the mixture A proportion of at least 5% of heterofil fibers, preferably bicofibres, is necessary, preferably at least 20%.
  • the fibrous webs used according to the invention can shrink up to 50%, depending on the orientation of the carded fiberboard, under the production conditions of the nonwoven fabric.
  • the nonwoven fabric is stabilized in the successive steps, preferably low in shrinkage, for example in the machine direction -3.0% and in the transverse direction -1.5%.
  • the fibrous webs used have basis weights of 15 to 210 g / m 2 .
  • carded batt with basis weights of 35 to 140 g / m 2 is used.
  • fiber materials are polyolefins, preferably polypropylene or polypropylene-ethylene copolymers, polyesters, polyamides or polyacrylonitrile and natural fibers, in particular cellulose fibers, cotton fibers, wool or mixtures thereof.
  • the binder containing the finely divided filler material may be of any nature, provided that it is capable of strengthening the fiber pile in selected surface areas.
  • thermoplastic polymers examples include polyolefin powder, in particular polyethylene or polypropylene powder, preferably co-polyester powder with a melting range> 150 ° C.
  • binders are in the US-A-5,366,801 , of the WO-A-02 / 12.607 , of the WO-A-02 / 59.414 and the WO-A-02 / 95.314 to find.
  • any finely divided materials can be used, by the addition of which the nonwoven fabric should be given a desired property.
  • filling materials are particles with ab- or adsorbing properties, ion exchangers, mineral fillers, reinforcing materials, electrically and / or thermally conductive materials / particles and in particular latent heat storage materials.
  • Particularly preferred are expanding microcapsules, particles of activated carbon, metal particles, particles of superabsorbent materials or short fibers.
  • latent heat storage materials the substances known per se can be used. Examples of this can be found in the documents mentioned above.
  • microencapsulated hydrocarbons in particular microencapsulated paraffins, as latent heat storage materials.
  • Examples of latent heat storage materials are listed in the following table.
  • connection Number of carbon atoms Melting point (° C) n-decane 10 -32 n-undecane 11 -26 n-dodecane 12 -11 n-Tridecane 13 -5.5 n-tetradecane 14 5.9 n-pentadecane 15 10.0 n-hexadecane 16 18.2 n-Heptadecane 17 22.0 n-octadecane 18 28.2 n-nonadecane 19 32.1 n-eicosane 20 36.8 n-heneicosane 21 40.5 n-docosane 22 44.4 n-tricosane 23 47.6 n-Tetracosane 24 50.9 n-pentacosane 25 53.7 n-hexacosane 265 56.4 h-heptacosane 27 59.0 n-Oct
  • the weight proportion of fiber material to binder and filler material in the nonwovens according to the invention is typically 90:10 to 10:90, preferably 50:50 to 30:70.
  • Binder and filler are applied in predetermined areas on loose batt by means of a printing technique, preferably by means of stencil printing. The largest part of the applied material should penetrate into the batt and penetrate this as possible. Some of the binder will also remain on the surface. Due to the punctiform application of the mixture of binder / filler material, however, areas of the batt remain in the finished product, in which there is actually no binder / filler.
  • the coverage of the surface with binder / filler material can span a wide range, typically from more than 20% up to 95% of the area. Preferably, more than 35% and up to 80% of the area of the batt is covered with binder / filler.
  • the order of the binder / filling material on the batt can be made according to different predetermined patterns. These patterns can be formed from line-shaped, hexagonal, circular or punctiform surface areas. Preference is given to dot patterns, such as regular or irregular dot patterns.
  • the production of the batt can be done as described above with a variety of methods.
  • the order of the binder / filler on the surface of the batt can also be done by any method. Preferred are screen printing methods, in particular the use of round screen printing stencils.
  • the treated batt is heated by heat rollers, so that the crimp of the batt is triggered.
  • step a) takes place by carding and depositing fibers on a carrier tape.
  • step b) is carried out as a passage of the batt between heated rolls with little or no pressure such that the treatment does not affect the thickness of the batt, the temperature of the rolls being below the melting temperature of the lowest melting polymer component of the fiber-forming material is selected.
  • step c) is carried out as a punctiform application of binder comprising particles of filler material, preferably of latent heat storage material, through a stencil on selected points of the surface of the batt.
  • the nonwoven fabric according to the invention can be used in a wide variety of fields, for example as a lining material or as an intermediate insert. Examples of uses are in clothing, bedding, gloves or shoes. In particular, the nonwoven fabric is used as interlining material.
  • a batt was made from a blend of 40% polyester side-by-side bicomponent fibers 3.0 dtex / 60 mm, 30% polyester homofil 3,3 dtex / 60 mm and 30% polyester homofil fibers 1.7 dtex / 38 mm. This had a basis weight of 50 g / m 2 .
  • the carded fiber web was passed between two heat rollers at 125 ° C without pressure.
  • a 40% mixture of a soft acrylate binder and mPCM latent heat storage material in the ratio 1: 2 in the form of a dot pattern was applied to the batt with a rotary screen printing stencil. The order was 90g / m 2 .
  • the printed area was 82.5%. After application, the printed batt was dried by a multi-belt dryer at 150 ° C and the binder crosslinked. The product is hereinafter called "40% biko, punctiform".
  • CTV full area
  • HZK means the maximum tensile force
  • HZD means the elongation at break.
  • the modulus values were measured at different strain values. The measurements were carried out in accordance with EN 29073-3.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Nonwoven Fabrics (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Gloves (AREA)
  • Details Of Garments (AREA)

Description

Technisches GebietTechnical area

Die vorliegende Erfindung betrifft einen Vliesstoff, der sich insbesondere als Einlagematerial eignet, ein Verfahren zu dessen Herstellung sowie dessen Verwendung zur Herstellung von Einlagen.The present invention relates to a nonwoven fabric, which is particularly suitable as a liner material, a process for its preparation and its use for the production of deposits.

Stand der TechnikState of the art

Mit Füllstoffen versehene textile Flächengebilde, insbesondere solche mit thermoregulierenden Eigenschaften, sind bereits bekannt.Filled with textile fabrics, especially those with thermoregulatory properties are already known.

EP-A-178,372 offenbart einen drapierfähigen mikroporösen Mehrschichtvliesstoff für medizinische Anwendungszwecke. Die mittlere Schicht besteht aus Mikrofasern und ist beidseitig mit Vliesstoffen abgedeckt. Die einzelnen Schichten sind durch eine musterförmig aufgedruckte Bindemittelpaste, beispielsweise eine Paraffinemulsion, verbunden. EP-A-178.372 discloses a drapeable microporous multi-layer nonwoven fabric for medical applications. The middle layer consists of microfibers and is covered on both sides with nonwovens. The individual layers are connected by a pattern-shaped binder paste, for example a paraffin emulsion.

In der EP-A-190,788 werden Nonwovens beschrieben, die in Mustern angeordnete und vorzugsweise aufgeschäumte Mikrokugeln enthalten und die als Verstärkungs-Materialien für Kunststoffe verwendet werden können.In the EP-A-190.788 Nonwovens are described which contain patterned and preferably foamed microspheres and which can be used as reinforcing materials for plastics.

Die US-A-5,366,801 oder die EP-A-611,330 beschreiben die Beschichtung eines Gewebes mit einem Bindemittel und darin verteilten Mikrokapseln, die ein Latentwärmespeichermaterial enthalten.The US-A-5,366,801 or the EP-A-611.330 describe coating a fabric with a binder and microcapsules dispersed therein containing a latent heat storage material.

Aus der WO-A-02/12,607 ist ein Vliesstoff mit temperaturregulierenden Eigenschaften bekannt. Dieser ist in einer darin beschriebenen Ausführung, mit einem Bindemittel enthaltend ein darin dispergiertes mikroverkapseltes Latentwärmespeichermaterial imprägniert. Das die thermoregulierenden Eigenschaften vermittelnde Material ist im gesamten Inneren des Vliesstoffes verteilt. Neben Ausführungsformen, bei denen das gesamte innere Volumen mit diesem Material gefüllt ist, sind Varianten beschrieben, bei denen das Material lediglich an den Kreuzungspunkten der Fasern vorhanden ist und die Innenräume mit Luft gefüllt sind. Allerdings wird in diesen erwähnten Ausführungsformen der gesamte Vliesstoff mit dem Material imprägniert. Dieses erfolgt durch Tränken des ausgebildeten Vliesstoffes mit dem Bindemittel. Als Ausgangsmaterialien werden Vliesstoffe, also mechanisch stabilisierte/gebundene Materialien, eingesetzt.From the WO-A-02 / 12.607 is a nonwoven fabric with temperature-regulating properties known. This is impregnated in a design described therein with a binder containing a microencapsulated latent heat storage material dispersed therein. The thermoregulatory properties imparting material is distributed throughout the interior of the nonwoven fabric. In addition to embodiments in which the entire inner volume is filled with this material, variants are described in which the material is present only at the crossing points of the fibers and the interior spaces are filled with air. However, in these mentioned embodiments, the entire nonwoven fabric is impregnated with the material. This is done by impregnating the formed nonwoven fabric with the binder. Nonwovens, ie mechanically stabilized / bonded materials, are used as starting materials.

In der WO-A-02/59,414 wird ein beschichtetes Material mit temperaturregulierenden Eigenschaften und verbesserter Flexibilität und Luftdurchlässigkeit beschrieben. Das beschichtete Material besteht aus einem Substrat, das auf einem Teil seiner Oberfläche mit Bindemittelpunkten oder mit Aufträgen von Bindemitteln enthaltend temperaturregulierende Materialien versehen ist. Die Bindemittel können oberflächlich aufgetragen sein oder in den Innenraum des Substrats eindringen und dieses teilweise oder ganz durchdringen. Auf jeden Fall ist ein Teil der Oberfläche nicht mit Bindemittel imprägniert. Es werden unterschiedliche beschichtete Substrate beschrieben, beispielsweise Gewebe, Vliesstoffe, Folien, Schäume und Papiere.In the WO-A-02 / 59.414 describes a coated material with temperature-regulating properties and improved flexibility and air permeability. The coated material consists of a substrate provided on a part of its surface with binder points or with applications of binders containing temperature-regulating materials. The binders may be applied on the surface or penetrate into the interior of the substrate and penetrate this partially or completely. In any case, part of the surface is not impregnated with binder. Various coated substrates are described, for example, fabrics, nonwovens, films, foams and papers.

Auch aus der WO-A-02/95,314 sind Substrate mit verbesserten temperaturregulierenden Eigenschaften bekannt. Nach diesem Dokument werden Polymerdispersionen enthaltend Latentwärmespeichermaterialien mittels Schablonen(druck) noppenförmig auf eine textile Oberfläche aufgetragen. Neben Metallfolien und textilen Flächen sind Vliesstoffe, also mechanisch stabilisierte Materialien/gebundene Faserflore, als mögliche Substrate erwähnt.Also from the WO-A-02 / 95.314 Substrates with improved temperature-regulating properties are known. According to this document polymer dispersions containing latent heat storage materials by means Stencils (print) applied in a nub on a textile surface. In addition to metal foils and textile surfaces, nonwovens, ie mechanically stabilized materials / bonded fibrous webs, are mentioned as possible substrates.

US 4,748,044 und WO 03/056086 offenbaren einen elastischen Vliesstoff, der gekräuselte Fasern und/oder gekräuselte Filamente aufweist, und an ausgewählten Stellen mit einem Bindemittel verfestigt ist und an weiteren ausgewählten Stellen nicht verfestigt ist. US 4,748,044 and WO 03/056086 disclose an elastic nonwoven fabric having crimped fibers and / or crimped filaments and which is solidified at selected locations with a binder and is not solidified at further selected locations.

Bei den im Stand der Technik bislang eingesetzten Substraten handelt es sich, soweit textile Flächen beschrieben wurden, um Gebilde, die nach der Herstellung soweit stabilisiert (gebunden, verfestigt) wurden, so daß sie ohne weiteres gehandhabt werden können. So werden beispielsweise Vliesstoffe hergestellt, indem nach der Ausbildung eines Faserflors einer mechanisch noch instabilen Fläche ("Vliesbildung") anschließend eine Vliesverfestigung vorgenommen wird (vergl. z.B. Vliesstoffe, herausgegeben von W. Albrecht, H. Fuchs und W. Kittelmann, Wiley-VCH (2000), Teil II, Herstellungsverfahren für Vliesstoffe, Kap. 6, Vliesverfestigung ). Typische Verfahren der Vliesverfestigung sind chemische Verfahren, wie Applikation eines Bindemittels, oder physikalische Verfahren (mechanische und/oder thermische Verfahren), wie Vernadeln, Verwirbeln, Behandlung mit Heißluft oder Kalandern. Diese Verfahren schließen sich direkt an die Vliesbildungsprozess an, um den mechanisch sehr instabilen Faserflor in eine handhabbare Form zu überführen.As far as textile surfaces have been described, the substrates hitherto used in the prior art are structures which have been stabilized (bound, solidified) to such an extent after production that they can be readily handled. For example, nonwovens are produced by subsequently forming a nonwoven fabric after the formation of a fibrous web of a mechanically unstable surface ("web formation") (cf., for example, US Pat Nonwovens, edited by W. Albrecht, H. Fuchs and W. Kittelmann, Wiley-VCH (2000), Part II, Nonwoven Fabrics Production Methods, Chap. 6, nonwoven bonding ). Typical methods of web bonding are chemical processes, such as application of a binder, or physical processes (mechanical and / or thermal processes), such as needling, swirling, treatment with hot air or calendering. These processes are directly followed by the web forming process to convert the mechanically very unstable web into a handleable form.

Unter Vliesstoffen im Sinne der vorliegenden Beschreibung werden bearbeitete Schichten, Vliese oder Faserflore aus gerichtet angeordneten oder wahllos zueinanderbefindlichen Fasern, verfestigt durch Reibung und/oder Kohäsion und/oder Adhäsion, verstanden (wie in ISO 9092 bzw. EN 29 092 definiert).For the purposes of the present specification, nonwoven fabrics are understood to mean processed layers, nonwovens or battings of directionally arranged or randomly bonded fibers, solidified by friction and / or cohesion and / or adhesion (as defined in ISO 9092 or EN 29 092).

Es hat auch bereits Versuche gegeben, das Bindemittel durch Schablonendruck direkt nach der Vliesbildung aufzutragen, indem pastenförmige Bindeflüssigkeiten mittels einer Rundsiebschablone auf den noch instabilen Faserflor appliziert wurden (vergl. z.B. Vliesstoffe, herausgegeben von W. Albrecht, H. Fuchs und W. Kittelmann, Wiley-VCH (2000), Kap. 6.5, chemische Verfahren, S. 381 ). Diese Verfahren haben sich in der Technik bislang nicht durchsetzen können, weil eine gleichmäßige Bindung eines Faserflors mittels "klebriger" Bindemittel technisch problematisch ist. Die losen Fasern des Faserflors tendieren zur Haftung an der Druckschablone und verhindern in kurzer Zeit den Druckprozess. Man kann den Faserflor sehr stark komprimieren oder verpressen - flächig oder punktförmig - um diesem Phänomen entgegenzuwirken, aber die entstehenden Produkte werden dadurch sehr flach und wenig textil; auch schlägt das Bindemittel stark durch.There have also been attempts to apply the binder by stencil printing directly after the web formation by paste-shaped binder liquids were applied by means of a Rundsiebschablone on the still unstable Faserflor (see, eg Nonwovens, edited by W. Albrecht, H. Fuchs and W. Kittelmann, Wiley-VCH (2000), Chap. 6.5, Chemical Processes, p. 381 ). These methods have not been able to prevail in the art so far, because a uniform bond a fibrous web by means of "sticky" binder is technically problematic. The loose fibers of the batt tend to adhere to the stencil and prevent the printing process in a short time. You can compress or compress the batt very much - flat or punctiform - to counteract this phenomenon, but the resulting products are thus very flat and little textile; also the binder is strong.

In der DE-A-29 14 617 wird ein Verfahren zum gleichmäßigen und kontinuierlichen Bedrucken von Pasten auf die Vorder- und Rückseite von textilen Flächengebilden beschrieben. Gemäß dem Beispiel wird ein durch Krempeln hergestellter Faserflor durch einen Kalander geleitet und dadurch vorverfestigt. Anschließend wird eine Bindemitteldispersion beidseitig in Form eines Musters auf dieses textile Flächengebilde mittels Walzen aufgetragen und anschließend getrocknet und das Bindemittel dabei vernetzt.In the DE-A-29 14 617 describes a method for uniform and continuous printing of pastes on the front and back of textile fabrics. According to the example, a carding produced by carding is passed through a calender and thereby pre-consolidated. Subsequently, a binder dispersion is applied on both sides in the form of a pattern on this textile fabric by means of rollers and then dried and the binder is crosslinked.

Bislang wurden Vliesstoffe mit thermoregulierenden Eigenschaften durch eine Nachbehandlung von Vliesstoffen, also von gebundenen, mechanisch stabilisierten textilen Flächen, mit thermoregulierenden Materialien hergestellt. Die Elastizität und die Weichheit dieser Vliesstoffe kann - bedingt durch den vorgeschalteten Verfestigungsschritt - in manchen Fällen zu wünschen übrig lassen.Until now, nonwovens with thermo-regulating properties have been produced by aftertreatment of nonwovens, ie of bonded, mechanically stabilized textile surfaces, with thermo-regulating materials. The elasticity and softness of these nonwovens can - in some cases leave something to be desired - due to the upstream solidification step.

Darstellung der ErfindungPresentation of the invention

Ausgehend von dem oben beschriebenen Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen mit Füllmaterial versehenen Vliesstoff bereitzustellen, der neben einer hohen Elastizität auch noch eine hohe Weichheit aufweist. Dadurch ist die Herstellung von Textilien mit verbesserter Passform und Tragekomfort möglich.Based on the above-described prior art, the object of the present invention is to provide a nonwoven fabric provided with filling material which, in addition to high elasticity, also has a high degree of softness. This makes it possible to produce textiles with improved fit and comfort.

Eine weitere Aufgabe der vorliegenden Erfindung bestand in dem Bereitstellen eines verbesserten Herstellungsverfahrens für mit Füllmaterialien versehenen Vliesstoffen, bei dem der vorgeschaltete Schritt der Vliesverfestigung entfallen kann und dass folglich die Herstellung von Vliesstoffen mit verringertem Aufwand ermöglicht.Another object of the present invention was to provide an improved manufacturing method for fillers Nonwovens, in which the upstream step of the nonwoven bonding can be omitted and thus allows the production of nonwoven fabrics with reduced effort.

Die vorliegende Erfindung betrifft einen Vliesstoff der gekräuselte und gegebenenfalls ungekräuselte Fasern und/oder Filamente aufweist, der an ausgewählten Stellen mit einem Bindemittel enthaltend Teilchen aus Füllmaterial verfestigt ist und der an weiteren ausgewählten Stellen nicht verfestigt ist.The present invention relates to a nonwoven fabric comprising crimped and optionally uncurled fibers and / or filaments which is solidified at selected locations with a binder containing particles of filler material and which is not solidified at further selected locations.

Durch das Auftragen und gegebenenfalls Aushärten des Binders enthaltend Füllmaterial direkt auf das unverfestigte Vlies, also auf den Faserflor nach dessen Ablage auf einem Träger wird ein Flächengebilde erzeugt, das in ausgewählten Flächenbereichen nicht verfestigt ist, das also in diesen Flächenbereichen keine Vliesbildung erfahren hat. Durch das Vorhandensein von nicht verfestigten Bereichen werden Durchlässigkeit, Elastizität und Griff des Vliesstoffes verbessert.By applying and optionally curing the binder containing filler directly on the unconsolidated nonwoven, ie on the batt after its deposition on a support, a sheet is produced which is not solidified in selected surface areas, which has thus experienced no web formation in these areas. The presence of non-solidified areas improves the permeability, elasticity and feel of the nonwoven fabric.

In der vorliegenden Erfindung werden bei der Herstellung des Faserflors in der Wärme kräuselbare Fasern bzw. Filamente eingesetzt. Vorzugsweise enthält der Faserflor zusätzlich ungekräuselte und nicht kräuselbare oder bei den Verarbeitungsbedingungen nicht kräuselbare Fasern bzw. Filamente.In the present invention, heat-curable fibers or filaments are used in the manufacture of the batt. Preferably, the batt additionally contains non-crimped and non-crimpable or non-crimpable fibers or filaments under the processing conditions.

Der erfindungsgemäße Vliesstoff weist also gekräuselte Fasern und/oder Filamente und vorzugsweise daneben auch ungekräuselte Fasern und/oder Filamente auf.The nonwoven fabric according to the invention thus has crimped fibers and / or filaments and preferably also non-crimped fibers and / or filaments.

Unter Fasern sind im Rahmen dieser Beschreibung Fäden endlicher Länge (Stapelfasern) zu verstehen, also Fäden mit Längen bis in den Dezimeterbereich.For the purposes of this description, fibers are threads of finite length (staple fibers), ie threads with lengths up to the decimeter range.

Unter Filamenten sind im Rahmen dieser Beschreibung Fäden praktisch unendlicher Länge zu verstehen, also Fäden mit Längen oberhalb des Dezimeterbereichs.Filaments in the context of this description are threads of virtually infinite length, ie threads with lengths above the decimeter range.

Als in der Wärme kräuselbare Fasern bzw. Filamente können Bikomponenten-fasern bzw. -filamente eingesetzt werden, um die Probleme, welche die derzeit aus dem Stand der Technik bekannten Produkte aufweisen, zu umgehen.As heat curable fibers or filaments, bicomponent fibers or filaments can be used to circumvent the problems of the products currently known in the art.

Bikomponenten-Fasern bzw. -Filamente werden in der Vliesstoffherstellung seit langer Zeit eingesetzt. Sie können als Kern-Mantel-Fasern bzw. -Filamente mit niedriger schmelzenden Mantelkomponente als Bindefaser bei der thermischen Verfestigung von Vliesstoffen - flächig oder punktförmig - genutzt werden (vergl._z.B. Vliesstoffe, herausgegeben von W. Albrecht, H. Fuchs und W. Kittelmann, Wiley-VCH (2000), Kap. 1.2, Chemiefasern - Bikomponentenfasern, S. 63 ).Bicomponent fibers or filaments have long been used in nonwoven fabric production. They can be used as core-sheath fibers or filaments with a lower melting sheath component as a binder fiber in the thermal consolidation of nonwoven fabrics - surface or punctiform - (cf., for example, US Pat. Nonwovens, edited by W. Albrecht, H. Fuchs and W. Kittelmann, Wiley-VCH (2000), Chap. 1.2, Manmade fibers - bicomponent fibers, p. 63 ).

Im erfindungsgemäßen Vliesstoff kommen die eingesetzten Bikomponentenfasern bzw. -filamente nicht wegen der klebenden /verbindenden Eigenschaften von niedriger schmelzenden Komponenten zum Einsatz. Es können auch Bikomponentenfasern bzw. -filamente aus Polymerkomponenten mit ähnlichen Schmelzpunkten zum Einsatz kommen; diese sind so aufgebaut, beispielsweise in Seite-an-Seite-Anordnung oder in asymmetrischer Kern-Mantel-Anordnung, dass bei deren Wärmebehandlung unterschiedlicher Schrumpf entlang der Faser- bzw. Filament-Achse ausgelöst wird. Anstelle von oder zusätzlich zu den Bikomponentenfasern bzw. - filamenten können auch Homopolymerfasern bzw. -filamente eingesetzt werden, die während ihrer Herstellung eine asymmetrische Abkühlung der Faser / des Filaments über deren Querschnitt erfahren haben.In the nonwoven fabric according to the invention, the bicomponent fibers or filaments used are not used because of the adhesive / bonding properties of lower-melting components. Also, bicomponent fibers or filaments of polymer components having similar melting points can be used; these are so constructed, for example in side-by-side arrangement or in asymmetric core-shell arrangement, that their heat treatment causes different shrinkage along the fiber or filament axis. Instead of or in addition to the bicomponent fibers or filaments, it is also possible to use homopolymer fibers or filaments which, during their production, have undergone an asymmetric cooling of the fiber / filament over their cross section.

Der eingesetzte Anteil dieser kräuselbaren Fasern bzw. Filamente bewirkt bei der Vliesstoffherstellung eine in-situ-Kontraktion des Faserflors bei Temperaturbeaufschlagung vor dem Druckwerk. Die sich kräuselnden Fasern bzw. Filamente ergeben eine Verbesserurg des inneren Zusammenhalts des Faserflors, dass dadurch die Bedruckbarkeit des Vliesstoffes wesentlich erleichtert wird. Zusätzlich erhält der Vliesstoff Volumen und Elastizität. Bei der Wärmebehandlung ist das Temperaturprofil so zu wählen, dass die Behandlungstemperatur unterhalb der Schmelz- oder Erweichungstemperatur des niedriger schmelzenden oder erweichenden Polymers der Mehrkomponentenfaser bleibt, so dass die Wärmebehandlung zwar die Kräuselung auslöst nicht jedoch eine Verklebung bewirkt.The proportion of these crimpable fibers or filaments used in nonwoven fabric production causes an in situ contraction of the batt on exposure to temperature before the printing unit. The curling fibers or filaments result in an improvement of the inner cohesion of the batt, thereby substantially facilitating the printability of the nonwoven fabric. In addition, the nonwoven fabric volume and elasticity. In the heat treatment, the temperature profile is to be chosen so that the treatment temperature remains below the melting or softening temperature of the lower melting or softening polymer of the multicomponent fiber, so that the heat treatment causes the crimp but does not cause adhesion.

Durch das Auslösen der Kräuselung während der Herstellung des erfindungsgemäßen Vliesstoffes gewinnen auch die eingedruckten Binderpunkte an Volumen und Weichheit, da sich durch die kräuselnden Fasern bzw. Filamente keine kompakten Punkte in der Fasermatrix ausbilden. Ein Verschäumen der Binderpunkte ist nicht nötig, kann aber erfolgen.By triggering the crimping during the production of the nonwoven fabric according to the invention, the imprinted binder dots also gain in volume and softness, since the crimping fibers or filaments do not form any compact dots in the fiber matrix. Foaming the binder points is not necessary, but can take place.

Zur Erreichung einer besonders weichen und elastischen Ware werden Vliesstoffe enthaltend zweidimensional oder dreidimensional gekräuselte Fasern und/oder Filamente bevorzugt.Nonwovens containing two-dimensionally or three-dimensionally crimped fibers and / or filaments are preferred for achieving a particularly soft and elastic fabric.

Die erfindungsgemäß zum Einsatz kommenden Faserflore können aus beliebigen Fasertypen der verschiedensten Titerbereiche bestehen, beispielsweise der Titer von 0,5 bis 10 dtex, vorzugsweise von 0,8 bis 6,7 dtex, insbesondere von 1,3 bis 3,3 dtex. Die Fasermischung soll mindestens 5 Gew. %, vorzugsweise mindestens 20 Gew. % an sich kräuselnden Fasern bzw. Filamenten enthalten. Diese können Heterofilfasern / Bikomponenten-fasern oder spezielle Homofilfasern (oder die entsprechenden Filamente) sein. Die sonstigen Fasern können die in der Vliesstoffherstellung üblichen Stapelfasern oder Filamente sein.The fibrous webs used according to the invention can consist of any desired fiber types of the most varied titer ranges, for example the titre of 0.5 to 10 dtex, preferably of 0.8 to 6.7 dtex, in particular of 1.3 to 3.3 dtex. The fiber mixture should contain at least 5% by weight, preferably at least 20% by weight, of curled fibers or filaments. These may be heterofil fibers / bicomponent fibers or special homofil fibers (or the corresponding filaments). The other fibers may be the usual in nonwoven fabric staple fibers or filaments.

Die erfindungsgemäß eingesetzten Faserflore können mit unterschiedlichen Vliesbildungstechniken erzeugt worden sein. Primär sind kardierte, trocken gelegte Faserflore angesprochen. Auch direkte Faserlegungstechniken nach dem Spinnvliesstoff-Verfahren oder dem Melt-Blown-Verfahren sind möglich.The fibrous webs used according to the invention may have been produced using different web-forming techniques. Primary are carded, dry laid bobbin addressed. Direct fiber laying techniques according to the spunbonded fabric process or the melt-blown process are also possible.

Besonders bevorzugt kommen Faserflore aus Stapelfasern zum Einsatz.Fibers made of staple fibers are particularly preferably used.

Die Fasern der eingesetzten Faserflore können isotrop oder in einer Vorzugsrichtung, d.h. anisotrop, abgelegt worden sein. Der Faserflor kann aus gleichen oder unterschiedlichen Titern derselben Faser bestehen. Die den Faserflor aufbauenden Fasern können aus unterschiedlichsten Fasern aufgebaut sein, bspw. aus Homofilfasern, aber auch aus 100 % Bikomponenten-Fasern oder einem Verschnitt aus Bikomponenten-Fasern und Homofilfasern. Es können auch Gemische von Synthesefasern mit Naturfasern eingesetzt werden.The fibers of the fibrous webs used may be isotropic or in a preferred direction, i. anisotropic, have been filed. The batt may consist of equal or different titers of the same fiber. The fibers constituting the batt may be composed of a wide variety of fibers, for example of homofil fibers, but also of 100% bicomponent fibers or a blend of bicomponent fibers and homofil fibers. It is also possible to use mixtures of synthetic fibers with natural fibers.

Bevorzugt werden Polyester-Homofilfasern, wie z.B. Homopolyesterfaser 1,7dtex/38mm oder 3,3dtex/51mm in Abmischung mit Polyester-Bikomponentenfasern, wie Polyester-side-by-side-Bikomponentenfasern eingesetzt. Auch Polyamidfasern, beispielsweise aus PA 66, 3d/1,5" können in der Mischung eingesetzt werden. Ein Anteil von mindestens 5 % HeterofilFasern, bevorzugt Bikofasern, ist notwendig, bevorzugt mindestens 20 %.Preferred are polyester homofil fibers, e.g. Homopolyester fiber 1.7dtex / 38mm or 3,3dtex / 51mm blended with polyester bicomponent fibers, such as polyester-side-by-side bicomponent fibers. It is also possible to use polyamide fibers, for example of PA 66, 3d / 1.5 ", in the mixture A proportion of at least 5% of heterofil fibers, preferably bicofibres, is necessary, preferably at least 20%.

Die erfindungsgemäß zum Einsatz kommenden Faserflore können unter den Herstellungsbedingungen des Vliesstoffes in Abhängigkeit von der Menge der zugesetzten Heterofil-Faser bis zu 50 %, je nach Orientierung des gekrempelten Faserflors schrumpfen. Der Vliesstoff wird aber in den sukzessiven Arbeitsschritten stabilisiert, vorzugsweise schrumpfarm, beispielsweise in Maschinenrichtung -3,0% und in Querrichtung -1,5 %.Depending on the amount of heterofil fiber added, the fibrous webs used according to the invention can shrink up to 50%, depending on the orientation of the carded fiberboard, under the production conditions of the nonwoven fabric. However, the nonwoven fabric is stabilized in the successive steps, preferably low in shrinkage, for example in the machine direction -3.0% and in the transverse direction -1.5%.

Typischerweise weisen die zum Einsatz kommenden Faserflore Flächengewichte von 15 bis 210 g/m2 auf.Typically, the fibrous webs used have basis weights of 15 to 210 g / m 2 .

Besonders bevorzugt kommen kardierte Faserflore mit Flächengewichten von 35 bis 140 g/m2 zum Einsatz.Particularly preferred are carded batt with basis weights of 35 to 140 g / m 2 is used.

Beispiele für Fasermaterialien sind Polyolefine, vorzugsweise Polypropylen oder Polypropylen-ethylen-copolymere, Polyester, Polyamide oder Polyacrylnitril sowie Naturfasern, insbesondere Cellulosefasern, Baumwollfasern, Wolle oder deren Mischungen.Examples of fiber materials are polyolefins, preferably polypropylene or polypropylene-ethylene copolymers, polyesters, polyamides or polyacrylonitrile and natural fibers, in particular cellulose fibers, cotton fibers, wool or mixtures thereof.

Der das feinverteilte Füllmaterial enthaltende Binder kann beliebiger Natur sein, sofern er zur Verfestigung des Faserflors in ausgewählten Flächenbereichen in der Lage ist.The binder containing the finely divided filler material may be of any nature, provided that it is capable of strengthening the fiber pile in selected surface areas.

Beispiele für Binder sind chemische vernetzende Kunststoffe, insbesondere in der Form von Dispersionen, wie z.B. ein Gemisch aus Ethyl- und Butylacrylat mit den üblichen Vernetzergruppen. Es können aber auch thermoplastische Polymere enthaltend feinverteiltes Füllmaterial eingesetzt werden. Diese wirken als Schmelzkleber und führen auf diese Weise eine Verfestigung der Fasern in den behandelten Bereichen des Faserflors herbei. Beispiele für diesen Typ von thermoplastischem Polymerbinder sind Polyolefinpulver, insbesondere Polyethylen- oder Polypropylenpulver, bevorzugt Co-Polyester-Pulver mit Schmelzbereich >150°C. Weitere Beispiele für Binder sind in der US-A-5,366,801 , der WO-A-02/12,607 , der WO-A-02/59,414 und der WO-A-02/95,314 zu finden.Examples of binders are chemical crosslinking plastics, especially in the form of dispersions, such as a mixture of ethyl and butyl acrylate with the usual crosslinker groups. However, it is also possible to use thermoplastic polymers containing finely divided filler material. These act as a hot melt adhesive and thus bring about a solidification of the fibers in the treated areas of the batt. Examples of this type of thermoplastic polymer binder are polyolefin powder, in particular polyethylene or polypropylene powder, preferably co-polyester powder with a melting range> 150 ° C. Other examples of binders are in the US-A-5,366,801 , of the WO-A-02 / 12.607 , of the WO-A-02 / 59.414 and the WO-A-02 / 95.314 to find.

Als Füllmaterialien können beliebige feinteilige Materialien eingesetzt werden, durch deren Zusatz dem Vliesstoff eine gewünschte Eigenschaft verliehen werden soll.As fillers, any finely divided materials can be used, by the addition of which the nonwoven fabric should be given a desired property.

Beispiele für Füllmaterialien sind Teilchen mit ab- oder adsorbierenden Eigenschaften, Ionenaustauscher, mineralische Füllstoffe, Verstärkungsmaterialien, elektrisch und/oder thermisch leitende Materialien/Partikel und insbesondere Latentwärmespeichermaterialien. Besonders bevorzugt eingesetzt werden expandierende Mikrokapseln, Teilchen aus Aktivkohle, Metallteilchen, Teilchen aus superabsorbierenden Materialien oder Kurzfasern.Examples of filling materials are particles with ab- or adsorbing properties, ion exchangers, mineral fillers, reinforcing materials, electrically and / or thermally conductive materials / particles and in particular latent heat storage materials. Particularly preferred are expanding microcapsules, particles of activated carbon, metal particles, particles of superabsorbent materials or short fibers.

Als besonders bevorzugte Latentwärmespeichermaterialien können die an sich bekannten Substanzen eingesetzt werden. Beispiele dafür sind in den vorstehend erwähnten Dokumenten zu finden.As particularly preferred latent heat storage materials, the substances known per se can be used. Examples of this can be found in the documents mentioned above.

Ganz besonders bevorzugt werden mikroverkapselte Kohlenwasserstoffe, insbesondere mikro-verkapselte Paraffine als Latentwärmespeichermaterialien eingesetzt.Very particular preference is given to using microencapsulated hydrocarbons, in particular microencapsulated paraffins, as latent heat storage materials.

Beispiele für Latentwärmespeichermaterialien sind in der folgenden Tabelle aufgeführt. Verbindung Anzahl der Kohlenstoffatome Schmelzpunkt (°C) n-Decan 10 -32 n-Undecan 11 -26 n-Dodecan 12 -11 n-Tridecan 13 -5,5 n-Tetradecan 14 5,9 n-Pentadecan 15 10,0 n-Hexadecan 16 18,2 n-Heptadecan 17 22,0 n-Octadecan 18 28,2 n-Nonadecan 19 32,1 n-Eicosan 20 36,8 n-Heneicosan 21 40,5 n-Docosan 22 44,4 n-Tricosan 23 47,6 n-Tetracosan 24 50,9 n-Pentacosan 25 53,7 n-Hexacosan 265 56,4 h-Heptacosan 27 59,0 n-Octacosan 28 61,4 n-Nonacosan 29 63,4 n-Triacontan 30 65,4 n-Hentriacontan 31 68,0 n-Dotriacontan 32 70,0 n-Tritriacontan 33 71,0 n-Tetratriacontan 34 72,9 n-Hexatriacontan 36 76,1 Examples of latent heat storage materials are listed in the following table. connection Number of carbon atoms Melting point (° C) n-decane 10 -32 n-undecane 11 -26 n-dodecane 12 -11 n-Tridecane 13 -5.5 n-tetradecane 14 5.9 n-pentadecane 15 10.0 n-hexadecane 16 18.2 n-Heptadecane 17 22.0 n-octadecane 18 28.2 n-nonadecane 19 32.1 n-eicosane 20 36.8 n-heneicosane 21 40.5 n-docosane 22 44.4 n-tricosane 23 47.6 n-Tetracosane 24 50.9 n-pentacosane 25 53.7 n-hexacosane 265 56.4 h-heptacosane 27 59.0 n-Octacosane 28 61.4 n-nonacosane 29 63.4 n-triacontane 30 65.4 n-hentriacontane 31 68.0 n-dotriacontane 32 70.0 n-Tritriacontan 33 71.0 n-Tetratriacontan 34 72.9 n-hexatriacontane 36 76.1

Der Gewichtsanteil von Fasermaterial zu Binder und Füllmaterial in den erfindungsgemäßen Vliesstoffen beträgt typischerweise 90 : 10 bis 10 : 90, bevorzugt 50 : 50 bis 30 : 70.The weight proportion of fiber material to binder and filler material in the nonwovens according to the invention is typically 90:10 to 10:90, preferably 50:50 to 30:70.

Binder und Füllmaterial werden in vorbestimmten Bereichen auf losen Faserflor mittels einer Drucktechnik, vorzugsweise mittels Schablonendruck aufgetragen. Dabei soll der größte Teil des aufgetragenen Materials in den Faserflor eindringen und diesen möglichst durchdringen. Etwas vom Binder wird auch auf der Oberfläche verbleiben. Durch den punktförmigen Auftrag der Mischung aus Binder/Füllmaterial bleiben jedoch im fertigen Produkt Bereiche des Faserflors erhalten, in denen sich eigentlich kein Binder/Füllmaterial befindet.Binder and filler are applied in predetermined areas on loose batt by means of a printing technique, preferably by means of stencil printing. The largest part of the applied material should penetrate into the batt and penetrate this as possible. Some of the binder will also remain on the surface. Due to the punctiform application of the mixture of binder / filler material, however, areas of the batt remain in the finished product, in which there is actually no binder / filler.

Die Bedeckung der Oberfläche mit Binder/Füllmaterial kann einen weiten Bereich umfassen, typischerweise von mehr als 20 % bis zu 95 % der Fläche. Bevorzugt werden mehr als 35 % und bis zu 80 % der Fläche des Faserflors mit Binder/Füllmaterial bedeckt.The coverage of the surface with binder / filler material can span a wide range, typically from more than 20% up to 95% of the area. Preferably, more than 35% and up to 80% of the area of the batt is covered with binder / filler.

Der Auftrag des Binder/Füllmaterials auf den Faserflor kann nach unterschiedlichen vorbestimmten Mustern erfolgen. Diese Muster können aus linienförmigen, sechseckigen, kreisringförmigen oder punktförmigen Flächenbereichen gebildet werden. Bevorzugt sind Punktmuster, wie reguläre oder irreguläre Punktmuster.The order of the binder / filling material on the batt can be made according to different predetermined patterns. These patterns can be formed from line-shaped, hexagonal, circular or punctiform surface areas. Preference is given to dot patterns, such as regular or irregular dot patterns.

Die Erfindung betrifft auch ein Verfahren zur Herstellung des oben beschriebenen Vliesstoffes umfassend die Maßnahmen:

  1. a) Herstellen eines Faserflors durch Ablegen von in der Wärme kräuselbaren Fasern und/oder von in der Wärme kräuselbaren Filamenten und ggf. von nicht in der Wärme kräuselbaren Fasern und/oder von nicht in der Wärme kräuselbaren Filamenten auf einer Ablagevorrichtung in an sich bekannter Weise,
  2. b) gegebenenfalls Vorverfestigung des Faserflors durch beheizte Walzen, deren Temperatur so gewählt ist, dass die Kräuselung der kräuselbaren Fasern und/oder Filamente ausgelöst wird,
  3. c) Auftragen von Bindemittel enthaltend Teilchen aus Füllmaterial auf ausgewählte Stellen des Faserflors in an sich bekannter Weise, und
  4. d) Erhitzen des in Schritt c) behandelten Faserflors zum vollständigen Auslösen der Kräuselung der kräuselbaren Fasern und/oder Filamente und zum Verbinden von Fasern des Faserflors durch das Bindemittel und gegebenenfalls Vernetzung des Bindemittels.
The invention also relates to a method for producing the nonwoven fabric described above, comprising the measures:
  1. a) producing a batt by depositing heat curable fibers and / or heat curable filaments and optionally non-heat curlable fibers and / or non-heat curl filaments on a storage device in a conventional manner .
  2. b) if appropriate preconsolidation of the batt by heated rolls whose temperature is selected such that the crimp of the crimpable fibers and / or filaments is triggered,
  3. c) applying binder comprising particles of filler material on selected locations of the batt in a conventional manner, and
  4. d) heating the fiber batt treated in step c) to completely induce the crimp of the crimpable fibers and / or filaments and for connecting fibers of the batt through the binder and optionally crosslinking of the binder.

Die Herstellung des Faserflors kann wie oben beschrieben mit unterschiedlichsten Verfahren erfolgen.The production of the batt can be done as described above with a variety of methods.

Der Auftrag des Binders/Füllmaterials auf die Oberfläche des Faserflors kann ebenfalls mit beliebigen Verfahren erfolgen. Bevorzugt sind Siebdruckverfahren, insbesondere der Einsatz von Rundsiebdruckschablonen.The order of the binder / filler on the surface of the batt can also be done by any method. Preferred are screen printing methods, in particular the use of round screen printing stencils.

Bevorzugt wird daher ein Verfahren bei dem das Auftragen des Bindemittels durch eine Rundsiebdruckschablone erfolgt, die unmittelbar nach dem Erzeugen des ungebundenen Faserflors und gegebenenfalls nach dessen Vorverfestigung auf dessen Oberfläche einwirkt.Preference is therefore given to a method in which the application of the binder is carried out by a round screen printing stencil, immediately after Producing the unbonded batt and possibly after its pre-solidification acts on the surface.

Nach dem Auftrag des Binder/Füllmaterials wird der so behandelte Faserflor durch Erhitzen stabilisiert. Dieses kann auf an sich bekannte Art und Weise erfolgen.After application of the binder / filling material of the thus treated batt is stabilized by heating. This can be done in a manner known per se.

Bevorzugt wird der behandelte Faserflor durch Heizwalzen erhitzt, so dass die Kräuselung des Faserflors ausgelöst wird.Preferably, the treated batt is heated by heat rollers, so that the crimp of the batt is triggered.

In einer bevorzugten Ausführung erfolgt Schritt a) durch Krempeln und Ablage von Fasern auf einem Trägerband.In a preferred embodiment, step a) takes place by carding and depositing fibers on a carrier tape.

In einer weiteren bevorzugten Ausführung erfolgt Schritt b) als Durchgang des Faserflors zwischen beheizten Walzen ohne oder mit nur geringem Druck, so dass die Behandlung die Dicke des Faserflors nicht beeinflusst, wobei die Temperatur der Walzen unterhalb der Schmelztemperatur der am niedrigsten schmelzenden Polymerkomponente des faserbildenden Materials gewählt wird.In a further preferred embodiment, step b) is carried out as a passage of the batt between heated rolls with little or no pressure such that the treatment does not affect the thickness of the batt, the temperature of the rolls being below the melting temperature of the lowest melting polymer component of the fiber-forming material is selected.

In einer weiteren bevorzugten Ausführung erfolgt Schritt c) als punktförmiges Auftragen von Bindemittel enthaltend Teilchen aus Füllmaterial, vorzugsweise von Latentwärmespeichermaterial, durch eine Schablone auf ausgewählte Stellen der Oberfläche des Faserflors.In a further preferred embodiment, step c) is carried out as a punctiform application of binder comprising particles of filler material, preferably of latent heat storage material, through a stencil on selected points of the surface of the batt.

Der erfindungsgemäße Vliesstoff kann auf unterschiedlichsten Gebieten eingesetzt werden, beispielsweise als Einlagestoff oder als Zwischeneinlage. Beispiele für Verwendungen sind in der Bekleidung, im Bettwarenbereich, in Handschuhen oder Schuhen. Insbesondere wird der Vliesstoff als Einlagestoff eingesetzt.The nonwoven fabric according to the invention can be used in a wide variety of fields, for example as a lining material or as an intermediate insert. Examples of uses are in clothing, bedding, gloves or shoes. In particular, the nonwoven fabric is used as interlining material.

Diese Verwendungen sind ebenfalls Gegenstand der vorliegenden Erfindung.These uses are also the subject of the present invention.

Die nachstehenden Beispiele erläutern die Erfindung ohne diese zu begrenzen.The following examples illustrate the invention without limiting it.

Beispielexample

Auf einer Krempel wurde ein Faserflor aus einer Mischung von 40 % Polyester-side-by-side-Bikomponentenfasern 3,0dtex/60mm, 30 % Polyesterhomofilfaser 3,3dtex/60 mm und 30 % Polyesterhomofilfasern 1,7dtex/38 mm hergestellt. Diese besaß ein Flächengewicht von 50 g/m2. Der gekrempelte Faserflor wurde zwischen zwei Heizwalzen mit 125°C ohne Druck hindurchgeführt. Auf dem Faserflor wurde mit einer Rotationssiebdruckschablone eine 40 %ige Mischung aus einem weichen Acrylat-Binder und mPCM Latentwärmespeichermaterial im Verhältnis 1:2 in Form eines Punktmusters appliziert. Der Auftag betrug 90g/m2. Die bedruckte Fläche war 82,5 %. Nach dem Auftrag wurde der bedruckte Faserflor durch einen Mehrband-Trockner bei 150°C getrocknet und der Binder vernetzt. Das Produkt wird nachstehend "40% Biko, punktförmig" genannt.On a carding machine, a batt was made from a blend of 40% polyester side-by-side bicomponent fibers 3.0 dtex / 60 mm, 30% polyester homofil 3,3 dtex / 60 mm and 30% polyester homofil fibers 1.7 dtex / 38 mm. This had a basis weight of 50 g / m 2 . The carded fiber web was passed between two heat rollers at 125 ° C without pressure. A 40% mixture of a soft acrylate binder and mPCM latent heat storage material in the ratio 1: 2 in the form of a dot pattern was applied to the batt with a rotary screen printing stencil. The order was 90g / m 2 . The printed area was 82.5%. After application, the printed batt was dried by a multi-belt dryer at 150 ° C and the binder crosslinked. The product is hereinafter called "40% biko, punctiform".

Die nachfolgenden Tabellen zeigen die elastischen Eigenschaften der hergestellten Vliesstoffe in Abhängigkeit von der eingesetzten Menge und Art an kräuselbaren Bikomponentenfasern.The following tables show the elastic properties of the nonwoven fabric produced as a function of the amount and type of crimpable bicomponent fibers used.

Dabei bedeutet "CTV, vollflächig" ein vollflächig mit Binder/mPCM imprägniertes Faserflor.In this context, "CTV, full area" means a fibrous web impregnated all over with binder / mPCM.

"100% Bico, punktförmig" ist ein erfindungsgemäßer Vliesstoff, der analog dem oben beschriebenen "40% Biko, punktförmig" hergestellt wurde mit der Abänderung, dass 100 % an Bikomponentenfasern eingesetzt wurden."100% Bico, punctiform" is a nonwoven according to the invention, which was prepared analogously to the "40% Biko, punctiform" described above with the modification that 100% of bicomponent fibers were used.

HZK bedeutet die Höchstzugkraft; HZD bedeutet die Bruchdehnung. Die Modulwerte wurden bei unterschiedlichsten Dehnungswerten gemessen. Die Messungen erfolgten analog EN 29073-3.HZK means the maximum tensile force; HZD means the elongation at break. The modulus values were measured at different strain values. The measurements were carried out in accordance with EN 29073-3.

Je niedriger der Modul bei niedriger Dehnung ist, desto leichter lässt sich das Material dehnen.The lower the modulus at low elongation, the easier it is to stretch the material. Tabellentables Gewicht (g/m2)Weight (g / m 2 ) HZK, längs (N/5cm)HZK, longitudinal (N / 5cm) HZD, längs (%)HZD, longitudinal (%) 5% Modul, längs (N/5cm)5% module, lengthwise (N / 5cm) 10% Modul, längs (N/5cm)10% module, longitudinal (N / 5cm) 15% Modul, längs (N/5cm)15% module, longitudinal (N / 5cm) 25% Modul, längs (N/5cm)25% module, longitudinal (N / 5cm) CTV, vollflächigCTV, full surface 140140 5454 3434 17,417.4 28,228.2 36,436.4 49,449.4 100% Bico, punktförmig100% Bico, punctiform 130130 1414 5858 2,22.2 5,65.6 8,58.5 11,911.9 40% Bico, punktförmig40% Bico, punctiform 140140 1313 4848 3,03.0 5,95.9 8,48.4 10,810.8 Gewicht (g/m2)Weight (g / m 2 ) HZK, quer (N/5cm)HZK, cross (N / 5cm) HZD, quer (%)HZD, landscape (%) 5% Modul, quer (N/5cm)5% module, transverse (N / 5cm) 10% Modul, quer (N/5cm)10% module, transverse (N / 5cm) 15% Modul, quer (N/5cm)15% module, transverse (N / 5cm) 25 % Modul, quer (N/5cm)25% module, transverse (N / 5cm) CTV, vollflächigCTV, full surface 140140 5555 7575 4,14.1 8,58.5 1212 18,118.1 100% Bico, punktförmig100% Bico, punctiform 130130 3838 7676 0,30.3 1,11.1 2,72.7 8,18.1 40% Bico, punktförmig40% Bico, punctiform 140140 3131 6969 0,60.6 2,12.1 4,24.2 9,79.7

Claims (19)

  1. Elastic nonwoven fabric comprising crimped fibres and/or crimped filaments and optionally uncrimped fibres and/or optionally uncrimped filaments, consolidated at selected places with a binder containing particles composed of filler material and non-consolidated at further selected places.
  2. Nonwoven fabric according to Claim 1, characterized in that it comprises uncrimped fibres and/or filaments as well as crimped fibres and/or filaments.
  3. Nonwoven fabric according to Claim 1, characterized in that it comprises at least 20% by weight of crimped fibres and/or crimped filaments.
  4. Nonwoven fabric according to Claim 1, characterized in that it is a roller-carded staple fibre nonwoven fabric.
  5. Nonwoven fabric according to Claim 1, characterized in that it contains crimped bicomponent fibres.
  6. Nonwoven fabric according to Claim 1, characterized in that in addition to crimped polyester bicomponent fibres it contains uncrimped polyester homofil fibres and optionally uncrimped polyamide fibres.
  7. Nonwoven fabric according to Claim 1, characterized in that it contains two- and/or three-dimensionally crimped fibres.
  8. Nonwoven fabric according to Claim 1, characterized in that the binder contains a chemically crosslinking plastic.
  9. Nonwoven fabric according to Claim 1, characterized in that the binder contains a thermoplastic polymer which bonds the fibres of the fibrous web together by hot-melt adhesion.
  10. Nonwoven fabric according to Claim 1, characterized in that particles having ab- or adsorbent properties, ion exchangers, mineral fillers, reinforcing materials, electrically and/or thermally conductive materials/particles and more particularly phase change materials are used as filler material.
  11. Nonwoven fabric according to Claim 10, characterized in that expanding microcapsules, activated carbon particles, metal particles, particles of superabsorbent materials or short fibres are used as filler material.
  12. Nonwoven fabric according to Claim 10, characterized in that the phase change material is a microencapsulated hydrocarbon.
  13. Nonwoven fabric according to Claim 1, characterized in that the filler-containing binder has been applied in the form of a regular or irregular pattern of dots which penetrates the fibrous web.
  14. Process for producing the nonwoven fabric according to Claim 1 comprising the measures of
    a) producing a fibrous web by laydown of heat-crimpable fibres and/or of heat-crimpable filaments and optionally of non-heat-crimpable fibres and/or of non-heat-crimpable filaments on a laydown machine in a conventional manner,
    b) optionally preconsolidating the fibrous web using heated rolls, the temperature of which is selected such that crimping of crimpable fibres and/or filaments is induced,
    c) applying binder containing particles of filler material to selected points of the fibrous web in a conventional manner, and
    d) heating the fibrous web treated in step c) to completely induce crimping of crimpable fibres and/or filaments and to bond fibres of the fibrous web together via the binder and optionally crosslinking the binder.
  15. Process according to Claim 14, characterized in that step a) is effected by roller carding and laydown of fibres a supporting belt.
  16. Process according to Claim 14, characterized in that step b) is effected by passing the fibrous web between heated rolls with only minimal pressure, if any, so that the treatment does not affect the thickness of the fibrous web, and in that the temperature of the rolls is chosen to be below the melting temperature of the lowest-melting polymer component of the fibre-forming material.
  17. Process according to Claim 14, characterized in that step c) is effected by applying binder containing particles of filler material, preferably of phase change material, in a punctiform manner through a screen onto selected parts of the fibrous web.
  18. Process according to Claim 17, characterized in that the binder is applied through a rotary screen printing screen which acts on the surface of the fibrous web immediately after the unbound fibrous web has been produced and, as the case may be, after its preconsolidation.
  19. Use of the nonwoven fabric according to Claim 1 as interlining material or as an intermediate layer, especially in clothing, bedding, gloves or shoes.
EP06724625A 2005-06-28 2006-04-28 Elastic, soft and punctiformly bound non-woven fabric provided with filler particles and method for production and the use thereof Not-in-force EP1937886B1 (en)

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DE200510030484 DE102005030484B4 (en) 2005-06-28 2005-06-28 Elastic nonwoven fabric, process for its preparation and its use
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JP4779014B2 (en) 2011-09-21
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KR101172600B1 (en) 2012-08-08
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CN101213333A (en) 2008-07-02
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US8114794B2 (en) 2012-02-14
PL1937886T3 (en) 2013-02-28
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WO2007000206A1 (en) 2007-01-04
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JP2008546927A (en) 2008-12-25
KR20100101700A (en) 2010-09-17
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