EP1224355A1 - Heel lining for use in the shoe industry - Google Patents

Heel lining for use in the shoe industry

Info

Publication number
EP1224355A1
EP1224355A1 EP00956508A EP00956508A EP1224355A1 EP 1224355 A1 EP1224355 A1 EP 1224355A1 EP 00956508 A EP00956508 A EP 00956508A EP 00956508 A EP00956508 A EP 00956508A EP 1224355 A1 EP1224355 A1 EP 1224355A1
Authority
EP
European Patent Office
Prior art keywords
heel lining
lining according
component continuous
heel
nonwoven fabric
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.)
Granted
Application number
EP00956508A
Other languages
German (de)
French (fr)
Other versions
EP1224355B1 (en
Inventor
Rudolf Wagner
Robert Groten
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
Publication of EP1224355A1 publication Critical patent/EP1224355A1/en
Application granted granted Critical
Publication of EP1224355B1 publication Critical patent/EP1224355B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04H3/016—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the fineness
    • 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
    • D04H3/009—Condensation or reaction polymers
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/07—Linings therefor
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
    • 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
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—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
    • 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
    • D04H3/10—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 yarns or filaments made mechanically
    • D04H3/11—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 yarns or filaments made mechanically by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • 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
    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
    • D06N3/0004—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using ultra-fine two-component fibres, e.g. island/sea, or ultra-fine one component fibres (< 1 denier)

Definitions

  • the invention relates to a heel lining for the shoe industry and a method for producing the same.
  • abrasion-resistant materials are used for the lining of the rear part of a shoe, the so-called heel counter.
  • these materials are intended to absorb the forces exerted by the foot on the shoe, particularly during the rolling movement in the longitudinal direction, and on the other hand, they have to absorb the frictional forces caused by the foot moving at least partially up and down when walking in the shoe will withstand.
  • a rough or suede-like material is traditionally used as heel lining, which prevents the shoe from sliding out of the shoe by a friction fit with the foot or the stocking of the wearer.
  • synthetic materials are also used. These synthetic materials are needle-punched nonwovens, which are produced by carding dry from polyester, viscose, polyamide, polypropylene fibers or mixtures of these fibers. For this, fiber pile with a basis weight of up to 800 g / m 2 submitted and mechanically solidified by intensive needling. This process step alone is very time-consuming and therefore relatively cost-intensive. This is usually followed by shrinking of the needle-punched nonwoven fabric by hot air or steam, which leads to a densification of the material and a further solidification with regard to the setting of the density desired for the application.
  • a heat-coagulable latex binder dispersion such as styrene-butadiene rubber (Styrene-Butadiene-Rubber - SBR) or nitrile-butadiene rubber (Nitrile-Butadiene-Rubber - NBR) impregnated and then dried.
  • the proportion of latex is approx. 30 to 60% by weight of the impregnated nonwoven weight.
  • the material prepared in this way is split into two to four thinner layers. This splitting process was adopted from the leather industry for nonwovens in order to increase productivity in the production of nonwovens.
  • the fission products can be sanded to even out the surface and improve the optical finish.
  • a hot melt adhesive is applied to one of the two sides to simplify further processing. Disadvantages of the synthetic heel lining used to date are, above all, the very different strength values in the longitudinal and transverse directions, the loss of strength due to the splitting of the fiber bundles arranged vertically from needling, and the non-uniformities of the individual layers with regard to the insertion and ejection side.
  • the object of the invention is to provide a heel lining for the shoe industry which, at grammages of 180 to 350 g / m 2 , has tearing and tear strength in the longitudinal and transverse directions> 15 N.
  • the invention has also set itself the task of specifying a method which is particularly suitable for producing such a heel lining.
  • the object is achieved by a heel lining which consists of a nonwoven fabric impregnated with a polymer and having a basis weight of 180 to 350 g / m 2 and tear strength in the longitudinal and transverse directions> 15 N, the nonwoven fabric being melt-spun, aerodynamically stretched and there is immediately a multi-component continuous filament with a titer of ⁇ 2 dtex and a multi-component continuous filament, after pre-consolidation, at least 90% of the super-micro continuous filament with a titer ⁇ 0.2 dtex has been split and solidified.
  • These heel liners have high tensile strengths and abrasion resistance with low basis weights.
  • the heel lining is preferably one in which the multi-component continuous filament is a bicomponent continuous filament made of two incompatible polymers, in particular a polyester and a polyamide.
  • the multi-component continuous filament therefore has good splittability and a very favorable ratio of strength to basis weight.
  • the heel lining is preferably one in which the polyester content in multicomponent continuous filament is higher than the polyamide content, in particular in the range of the weight ratio of polyester content to polyamide content 1.1: 1 to 3: 1.
  • the heel lining has a very textile handle and good aging resistance.
  • a heel lining is particularly preferred in which the multicomponent continuous filaments have a cross section with an orange-like multisegment structure, the segments alternately each containing one of the two incompatible polymers.
  • the heel lining is preferably one in which the nonwoven fabric formed from the multi-component continuous filaments is precalanded for pre-consolidation. The material therefore has very good thickness uniformity.
  • a heel lining in which at least one of the incompatible polymers forming a multicomponent continuous filament contains an additive, such as color pigments, permanent antistatic agents and / or additives which influence the hydrophilic or hydrophobic properties, in amounts of up to 15% by weight is furthermore particularly preferred.
  • the heel lining can be positively influenced with regard to its light fastness, the tendency towards static charging, the transport of sweat or the moisture accumulation effect.
  • the addition of the color pigments to the spinning mass enables the production of deep and abrasion-resistant colors.
  • a heel lining in which the multi-component continuous filament is uncrimped is also particularly preferred, since this ensures the textile handle as a result of the good cleavage in super-micro continuous filaments.
  • a heel lining in which the nonwoven is impregnated with 20 to 50% by weight of a polymer, based on the starting weight of the nonwoven, is particularly preferred according to the invention.
  • the heel lining has superior strength properties at comparable degrees of impregnation compared to the known synthetic heel lining materials.
  • the heel lining is advantageously one in which one of the sides is provided with a hot-melt adhesive application. Such a material is particularly suitable for further processing on automatic machines.
  • the method according to the invention for the production of the heel lining consists in that multi-component continuous filaments are spun from the melt, aerodynamically stretched and immediately deposited into a nonwoven fabric, pre-consolidation takes place by pre-calendering or needling, and the nonwoven fabric is consolidated by high-pressure fluid jets and at the same time in super-micro continuous filaments split with a titer of ⁇ 0.2 dtex and then impregnated with a polymer.
  • the products obtained in this way are very uniform in terms of their strength, because there is a largely isotropic thread distribution in the product.
  • the products show no tendency to delamination and have high module values as well as tear and tear strength.
  • Another advantageous embodiment of the method is that the solidification and splitting of the multicomponent continuous filaments takes place in that the pre-consolidated nonwoven fabric is subjected to high pressure water jets alternately from both sides. This type of solidification and splitting of the multi-component continuous filaments leads to very dense nonwovens with smooth surfaces.
  • the solidification and splitting of the multicomponent continuous filament is preferably carried out on an aggregate with rotating sieve drums. This form of aggregate allows very compact systems to be built.
  • the nonwoven which is mainly split and solidified to form super-micro continuous filaments, is impregnated with an aqueous polyurethane or NBR latex dispersion. Residues of solvent are avoided and the impregnation with a polymer is carried out in a particularly environmentally friendly manner.
  • the impregnated material is preferably subjected to an aftertreatment by grinding or buffing. These measures can improve the surface quality and the grip of the material obtained.
  • the microfilaments contained in the structure create a particularly fine and noble, nubuck-like surface that is very similar to that of natural leather.
  • Example A non-woven fabric with a basis weight of approx. 160 g / m 2 is produced from a multicomponent continuous filament consisting of 65% by weight of poly (ethylene terephthalate) and 35% by weight of poly (hexamethylene adipamide).
  • the starting filaments have a titer of approx. 1.8 dtex and consist of 16 segments, with polyester and polyamide segments alternating like orange slits around a central axis.
  • the melt-spun multicomponent filaments are stretched aerodynamically and placed randomly on a belt.
  • the Vliesstoffflor thus obtained is fed to a Prekalandr réelle at temperatures of about 95 C C and a pressure of about 100 bar.
  • a nonwoven fabric is made from polyester and polypropylene staple fibers by intensive needling and impregnated with NBR.
  • a heel lining with a basis weight of 320 g / m 2 and a thickness of 0.85 mm is obtained by splitting.
  • the abrasion resistance was determined in such a way that a test specimen with 90 mm 0 was clamped in a rotary clamping head and loaded with a scouring pressure of 2.8 N / cm 2 .
  • the angle of rotation of the clamping head is 50 degrees.
  • the test sample is tested against a scouring element which has diamonds on its surface.
  • the test sample is wetted with water and cycled back and forth, a scrubbing cycle consisting of 300 back and forth movements, which is followed by a visual assessment based on a grading template.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Nonwoven Fabrics (AREA)
  • Woven Fabrics (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Abstract

The invention relates to a heel lining for use in the shoe industry comprising a polymer impregnated non-woven having a surface area weight of 180 to 350 g/m<2> and a tear strength of > 15 N in a longitudinal and a perpendicular direction. The non-woven consists of melt spun, aerodynamically stretched multi-component endless filaments which are arranged directly to form a non-woven. Said non-woven has a titer of < 2 dtex. The multi-component endless filaments are split and hardened when said filaments have attained a pre-defined strength of 90 % of the supermicro-endless filaments, i.e. a titer of < 0.2 dtex.

Description

Fersenfutter für die Schuhindustrie Heel lining for the shoe industry
Beschreibungdescription
Die Erfindung betrifft ein Fersenfutter für die Schuhindustrie und ein Verfahren zur Herstellung desselben.The invention relates to a heel lining for the shoe industry and a method for producing the same.
In der Schuhindustrie werden besonders abriebfeste Materialien für die Auskleidung des hinteren Teils eines Schuhs, der sogenannten Fersenkappe, eingesetzt. Diese Materialien sollen zum einen die Kräfte aufnehmen, die durch den Fuß auf den Schuh insbesondere bei der Abrollbewegung in Längsrichtung ausgeübt werden, zum anderen müssen sie den Reibungskräften, die durch den sich beim Gehen im Schuh zumindest partiell auf- und abwärts bewegten Fuß hervor gerufen werden, standhalten. Um ein ungewolltes Herausgleiten aus dem Schuh bei der Abrollbewegung zu vermeiden, wird traditionell ein rauh- oder wildlederartiges Material als Fersenfutter eingesetzt, das durch einen Reibschluß mit dem Fuß oder dem Strumpf des Trägers das Herausgleiten aus dem Schuh verhindert.In the shoe industry, particularly abrasion-resistant materials are used for the lining of the rear part of a shoe, the so-called heel counter. On the one hand, these materials are intended to absorb the forces exerted by the foot on the shoe, particularly during the rolling movement in the longitudinal direction, and on the other hand, they have to absorb the frictional forces caused by the foot moving at least partially up and down when walking in the shoe will withstand. In order to prevent unwanted sliding out of the shoe during the rolling movement, a rough or suede-like material is traditionally used as heel lining, which prevents the shoe from sliding out of the shoe by a friction fit with the foot or the stocking of the wearer.
Neben den aus natürlichen Materialien hergestellten Fersenfuttern werden auch synthetische Materialien eingesetzt. Diese synthetische Materialien sind Nadelvliesstoffe, die auf trockenem Wege durch Krempeln aus Polyester-, Viskose-, Polyamid-, Polypropylen-Fasern bzw. Mischungen dieser Fasern hergestellt werden. Dazu werden Faserflore mit einem Flächengewicht bis zu 800 g/m2 vorgelegt und durch intensive Vernadelung mechanisch verfestigt. Schon allein dieser Verfahrensschritt ist sehr zeitaufwendig und damit relativ kostenintensiv. Es schließt sich gewöhnlich ein Schrumpfen des Nadelvliesstoffes durch Heißluft oder Dampf an, der zu einem Verdichten des Materials sowie einer weiteren Verfestigung im Hinblick auf die Einstellung der für den Anwendungszweck gewünschten Dichte führt. Um die notwendigen Festigkeitsparameter wie Ein- und Weiterreißbeständigkeit des Nadelvliesstoffes zu erreichen, wird dieser mit einer wärmekoagulierbaren Latexbindemittel-Dispersion wie Styren-Butadien-Kautschuk (Styrene- Butadiene-Rubber - SBR) oder Nitril-Butadien-Kautschuk (Nitril-Butadiene- Rubber - NBR) imprägniert und anschließend getrocknet. Der Latexanteil beträgt ca. 30 bis 60 Gew.-% des imprägnierten Vliesstoffgewichtes. Das so vorbereitete Material wird in zwei bis vier dünnere Lagen gespalten. Dieses Spaltverfahren wurde aus der Lederindustrie für Vliesstoffe übernommen, um die Produktivität bei der Vliesstoffherstellung zu steigern. Die Spaltprodukte können zur Vergleichmäßigung der Oberfläche und zur Verbesserung des optischen Finishes noch angeschliffen werden. Abschließend wird auf eine der beiden Seiten ein Schmelzkleber aufgetragen, um die Weiterverarbeitung zu vereinfachen. Nachteilig an dem bisher eingesetzten synthetischen Fersenfutter sind vor allem die sehr unterschiedliche Festigkeitswerte in Längsund Querrichtung, der durch das Spalten der vom Vernadeln her senkrecht angeordneten Faserbündel eintretende Festigkeitsverlust sowie die hinsichtlich der Ein- und Ausstichsseite bedingten Ungleichmäßigkeiten der einzelnen Lagen.In addition to the heel liners made from natural materials, synthetic materials are also used. These synthetic materials are needle-punched nonwovens, which are produced by carding dry from polyester, viscose, polyamide, polypropylene fibers or mixtures of these fibers. For this, fiber pile with a basis weight of up to 800 g / m 2 submitted and mechanically solidified by intensive needling. This process step alone is very time-consuming and therefore relatively cost-intensive. This is usually followed by shrinking of the needle-punched nonwoven fabric by hot air or steam, which leads to a densification of the material and a further solidification with regard to the setting of the density desired for the application. In order to achieve the necessary strength parameters such as resistance to tearing and tear propagation of the needle-punched nonwoven, it is coated with a heat-coagulable latex binder dispersion such as styrene-butadiene rubber (Styrene-Butadiene-Rubber - SBR) or nitrile-butadiene rubber (Nitrile-Butadiene-Rubber - NBR) impregnated and then dried. The proportion of latex is approx. 30 to 60% by weight of the impregnated nonwoven weight. The material prepared in this way is split into two to four thinner layers. This splitting process was adopted from the leather industry for nonwovens in order to increase productivity in the production of nonwovens. The fission products can be sanded to even out the surface and improve the optical finish. Finally, a hot melt adhesive is applied to one of the two sides to simplify further processing. Disadvantages of the synthetic heel lining used to date are, above all, the very different strength values in the longitudinal and transverse directions, the loss of strength due to the splitting of the fiber bundles arranged vertically from needling, and the non-uniformities of the individual layers with regard to the insertion and ejection side.
Die Erfindung hat sich die Aufgabe gestellt, ein Fersenfutter für die Schuhindustrie anzugeben, welches bei Flächengewichten von 180 bis 350 g/m2 Ein- und Weiterreißfestigkeiten sowohl in Längs- als auch in Querrichtung > 15 N aufweist. Die Erfindung hat sich weiterhin die Aufgabe gestellt, ein für die Erzeugung eines solchen Fersenfutters besonders geeignetes Verfahren anzugeben. Erfindungsgemäß wird die Aufgabe durch ein Fersenfutter gelöst, welches aus einem mit einem Polymer imprägnierten Vliesstoff mit Flächengewichten von 180 bis 350 g/m2 und Weiterreißfestigkeiten sowohl in Längs- als auch in Querrichtung > 15 N besteht, wobei der Vliesstoff aus schmelzgesponnen, aerodynamisch verstreckten und unmittelbar zu einem Vlies abgelegten Mehrkomponenten-Endlosfilamente mit einem Titer < 2 dtex besteht und die Mehrkomponenten-Endlosfilamente nach einer Vorverfestigung zumindest zu 90 % zur Supermikro-Endlosfilamenten mit einem Titer < 0,2 dtex gesplittet und verfestigt sind. Diese Fersenfutter weisen hohe Zugbelastbarkeiten und Abriebsbeständigkeiten bei geringen Flächengewichten auf.The object of the invention is to provide a heel lining for the shoe industry which, at grammages of 180 to 350 g / m 2 , has tearing and tear strength in the longitudinal and transverse directions> 15 N. The invention has also set itself the task of specifying a method which is particularly suitable for producing such a heel lining. According to the invention, the object is achieved by a heel lining which consists of a nonwoven fabric impregnated with a polymer and having a basis weight of 180 to 350 g / m 2 and tear strength in the longitudinal and transverse directions> 15 N, the nonwoven fabric being melt-spun, aerodynamically stretched and there is immediately a multi-component continuous filament with a titer of <2 dtex and a multi-component continuous filament, after pre-consolidation, at least 90% of the super-micro continuous filament with a titer <0.2 dtex has been split and solidified. These heel liners have high tensile strengths and abrasion resistance with low basis weights.
Vorzugsweise ist das Fersenfutter eines, bei dem das Mehrkomponenten- Endlosfilament ein Bikomponenten-Endlosfilament aus zwei inkompatiblen Polymeren, insbesondere einem Polyester und einem Polyamid, ist. Das Mehrkomponenten-Endlosfilament weist dadurch eine gute Spaltbarkeit und ein sehr günstiges Verhältnis von Festigkeit zu Flächengewicht auf.The heel lining is preferably one in which the multi-component continuous filament is a bicomponent continuous filament made of two incompatible polymers, in particular a polyester and a polyamide. The multi-component continuous filament therefore has good splittability and a very favorable ratio of strength to basis weight.
Vorzugsweise ist das Fersenfutter eines, bei dem der Polyesteranteil in Mehrkomponenten-Endlosfilament höher als der Polyamidanteil, insbesondere im Bereich des Gewichtsverhältnis von Polyesteranteil zu Polyamidanteil 1 , 1 : 1 bis 3 : 1 , ist. Die Fersenfutter weisen dadurch einen sehr textilen Griff und eine gute Alterungsbeständigkeit auf.The heel lining is preferably one in which the polyester content in multicomponent continuous filament is higher than the polyamide content, in particular in the range of the weight ratio of polyester content to polyamide content 1.1: 1 to 3: 1. The heel lining has a very textile handle and good aging resistance.
Besonders bevorzugt ist ein Fersenfutter, bei dem die Mehrkomponenten- Endlosfilamente einen Querschnitt mit orangenartiger Multisegment-Struktur aufweisen, wobei die Segmente alternierend jeweils eines der beiden inkompatiblen Polymeren enthalten. Vorzugsweise ist das Fersenfutter eines, bei dem der aus dem Mehrkomponenten-Endlosfilamenten gebildete Vliesstoff zur Vorverfestigung prekalandriert ist. Das Material weist dadurch eine sehr gute Dickengleichmäßigkeit auf.A heel lining is particularly preferred in which the multicomponent continuous filaments have a cross section with an orange-like multisegment structure, the segments alternately each containing one of the two incompatible polymers. The heel lining is preferably one in which the nonwoven fabric formed from the multi-component continuous filaments is precalanded for pre-consolidation. The material therefore has very good thickness uniformity.
Besonders bevorzugt ist weiterhin ein Fersenfutter, bei dem mindestens eines der als Mehrkomponenten-Endlosfilament bildenden inkompatiblen Polymere ein Additiv, wie Farbpigmente, permanent wirkende Antistatika und/oder die hydrophilen oder hydrophoben Eigenschaften beeinflussende Zusätze in Mengen bis zu 15 Gew.-% enthält. Das Fersenfutter kann dadurch hinsichtlich seiner Lichtechtheit, der Neigung zur statischen Aufladung, den Schweißtransport bzw. der Feuchtigkeitsstauwirkung positiv beeinflußt werden. Weiterhin ermöglicht die Zugabe der Farbpigmente in die Spinnmasse die Herstellung tiefer und abriebbeständiger Farben.A heel lining in which at least one of the incompatible polymers forming a multicomponent continuous filament contains an additive, such as color pigments, permanent antistatic agents and / or additives which influence the hydrophilic or hydrophobic properties, in amounts of up to 15% by weight is furthermore particularly preferred. As a result, the heel lining can be positively influenced with regard to its light fastness, the tendency towards static charging, the transport of sweat or the moisture accumulation effect. Furthermore, the addition of the color pigments to the spinning mass enables the production of deep and abrasion-resistant colors.
Besonders bevorzugt ist weiterhin ein Fersenfutter, bei dem das Mehrkomponenten-Endlosfilament ungekräuselt ist, da dadurch der textile Griff resultierend aus der guten Spaltbarkeit in Supermikro-Endlosfilamente gewährleistet ist.A heel lining in which the multi-component continuous filament is uncrimped is also particularly preferred, since this ensures the textile handle as a result of the good cleavage in super-micro continuous filaments.
Besonders bevorzugt nach der Erfindung ist ein Fersenfutter, bei dem der Vliesstoff mit 20 bis 50 Gew.-% eines Polymer, bezogen auf das Ausgangsgewicht des Vliesstoffes, imprägniert ist. Das Fersenfutter weist bei vergleichbaren Imprägnierungsgraden gegenüber den bekannten synthetischen Fersenfuttermatenalien überlegene Festigkeitseigenschaften auf.A heel lining in which the nonwoven is impregnated with 20 to 50% by weight of a polymer, based on the starting weight of the nonwoven, is particularly preferred according to the invention. The heel lining has superior strength properties at comparable degrees of impregnation compared to the known synthetic heel lining materials.
Vorteilhafterweise ist das Fersenfutter eines, bei dem eine der Seiten mit einem Schmelzkleberauftrag versehen ist. Ein solches Material ist insbesondere für die Weiterverarbeitung auf automatischen Maschinen geeignet. Das erfindungsgemäße Verfahren zur Herstellung des Fersenfutters besteht darin, daß Mehrkomponenten-Endlosfilamente aus der Schmelze ersponnen, aerodynamisch verstreckt und unmittelbar zu einem Vlies abgelegt werden, eine Vorverfestigung durch Prekalandrieren oder Vernadeln erfolgt und der Vliesstoff durch Hochdruck-Fluidstrahlen verfestigt sowie gleichzeitig in Supermikro-Endlosfilamente mit einem Titer < 0,2 dtex gesplittet sowie anschließend mit einem Polymer imprägniert wird. Die so erhaltenen Produkte sind sehr gleichmäßig hinsichtlich ihrer Festigkeitsbelastbarkeit, weil eine weitgehend isotrope Fadenverteilung im Produkt vorliegt. Die Produkte zeigen keine Neigung zu Delamination und weisen hohe Modulwerte sowie Ein- und Weiterreißfestigkeiten auf.The heel lining is advantageously one in which one of the sides is provided with a hot-melt adhesive application. Such a material is particularly suitable for further processing on automatic machines. The method according to the invention for the production of the heel lining consists in that multi-component continuous filaments are spun from the melt, aerodynamically stretched and immediately deposited into a nonwoven fabric, pre-consolidation takes place by pre-calendering or needling, and the nonwoven fabric is consolidated by high-pressure fluid jets and at the same time in super-micro continuous filaments split with a titer of <0.2 dtex and then impregnated with a polymer. The products obtained in this way are very uniform in terms of their strength, because there is a largely isotropic thread distribution in the product. The products show no tendency to delamination and have high module values as well as tear and tear strength.
Eine weitere vorteilhafte Ausgestaltung des Verfahrens besteht darin, daß die Verfestigung und Splittung der Mehrkomponenten-Endlosfilamente dadurch erfolgt, daß der vorverfestigte Vliesstoff mehrfach abwechselnd von beiden Seiten mit Hochdruck-Wasserstrahlen beaufschlagt wird. Diese Art der Verfestigung und Splittung der Mehrkomponenten-Endlosfilamente führt zu sehr dichten Vliesstoffen mit glatten Oberflächen.Another advantageous embodiment of the method is that the solidification and splitting of the multicomponent continuous filaments takes place in that the pre-consolidated nonwoven fabric is subjected to high pressure water jets alternately from both sides. This type of solidification and splitting of the multi-component continuous filaments leads to very dense nonwovens with smooth surfaces.
Vorzugsweise wird das Verfestigen und Splitten des Mehrkomponenten- Endlosfilaments auf einem Aggregat mit rotierenden Siebtrommeln durchgeführt. Diese Form der Aggregate gestattet den Bau sehr kompakter Anlagen.The solidification and splitting of the multicomponent continuous filament is preferably carried out on an aggregate with rotating sieve drums. This form of aggregate allows very compact systems to be built.
In besonders bevorzugter Weise wird die Imprägnierung des überwiegend zur Supermikro-Endlosfilamenten gesplitteten und verfestigten Vlieses mit einer wässrigen Polyurethan- oder NBR-Latexdispersion vorgenommen. Dadurch werden Rückstände an Lösemittel vermieden und die Imprägnierung mit einem Polymer in besonders umweltfreundlicher Weise vorgenommen. In bevorzugter Weise wird das imprägnierte Material noch einer Nachbehandlung durch Schleifen oder Buffen unterzogen. Durch diese Maßnahmen können die Oberflächenbeschaffenheit und der Griff des erhaltenen Materials noch verbessert werden. Durch die in der Struktur enthaltenen Mikrofilamente entsteht dabei eine besonders feine und edle, nubukartige Oberfläche, die der von natürlichem Leder sehr ähnelt.In a particularly preferred manner, the nonwoven, which is mainly split and solidified to form super-micro continuous filaments, is impregnated with an aqueous polyurethane or NBR latex dispersion. Residues of solvent are avoided and the impregnation with a polymer is carried out in a particularly environmentally friendly manner. The impregnated material is preferably subjected to an aftertreatment by grinding or buffing. These measures can improve the surface quality and the grip of the material obtained. The microfilaments contained in the structure create a particularly fine and noble, nubuck-like surface that is very similar to that of natural leather.
Beispiel Aus einem Mehrkomponenten-Endlosfilament bestehend aus 65 Gew.-% Poly(ethylenterephthalat) und 35 Gew.-% Poly(hexamethylenadipamid) wird ein Vliesstoffflor mit einem Flächengewicht von ca. 160 g/m2 hergestellt. Die Ausgangsfilamente haben ein Titer von ca. 1 ,8 dtex und bestehen aus 16 Segmenten, wobei sich Polyester und Polyamidsegmente wie Orangenspalten um eine Mittelachse herum abwechseln. Die schmelzgesponnenen Mehrkomponenten-Endlosfilamente werden aerodynamisch verstreckt und regellos auf einem Band abgelegt. Der so erhaltene Vliesstoffflor wird einer Prekalandrierung bei Temperaturen von ca. 95 CC und einem Druck von ca. 100 bar zugeführt. Nach einer mechanischen Vorverfestigung durch Vernadeln erfolgt eine Wasserstrahlbehandlung bei ca. 100 bar Wasserdruck. Anschließend findet die Splittung der Mehrkomponenten-Endlosfilamente in Supermikro-Endlosfilamente mit einem Titer von ca. 0,1 dtex und eine Verfestigung des Vliesstoffes mit Hilfe von Hochdruckwasserstrahlen statt. Die Behandlung erfolgt jeweils zweimal von beiden Seiten bei Wasserdrucken von 250 bis 300 bar und auf Siebunterlagen mit 60 bis 100 mesh Maschenweite. Das Vlies wird anschließend getrocknet und einer Imprägnierung mit Polymer mit Hilfe einer Trocken-in-Nass-Behandlung mit NBR-Latex unterzogen. Es werden ca. 125 Gew. -% NBR bezogen auf das Ausgangsgewicht des Vliesstoffes aufgetragen und durch Trocknung bei 180 °C fixiert. Nach dem Anschleifen wird ein Fersenfutter mit einem Gewicht von 260 g/m2 und einer Dicke von 0,75 mm erhalten.Example A non-woven fabric with a basis weight of approx. 160 g / m 2 is produced from a multicomponent continuous filament consisting of 65% by weight of poly (ethylene terephthalate) and 35% by weight of poly (hexamethylene adipamide). The starting filaments have a titer of approx. 1.8 dtex and consist of 16 segments, with polyester and polyamide segments alternating like orange slits around a central axis. The melt-spun multicomponent filaments are stretched aerodynamically and placed randomly on a belt. The Vliesstoffflor thus obtained is fed to a Prekalandrierung at temperatures of about 95 C C and a pressure of about 100 bar. After mechanical pre-consolidation by needling, water jet treatment is carried out at approx. 100 bar water pressure. Subsequently, the multi-component continuous filaments are split into super-micro continuous filaments with a titer of approx. 0.1 dtex and the nonwoven is consolidated with the help of high-pressure water jets. The treatment is carried out twice from both sides at water pressures of 250 to 300 bar and on sieve pads with a mesh size of 60 to 100 mesh. The fleece is then dried and subjected to polymer impregnation using a dry-on-wet treatment with NBR latex. Approx. 125% by weight of NBR, based on the initial weight of the nonwoven, is applied and fixed by drying at 180 ° C. After this A heel lining with a weight of 260 g / m 2 and a thickness of 0.75 mm is obtained.
Vergleichsbeispiel Aus Polyester- und Polypropylen-Stapelfasern wird durch intensive Vernadelung ein Vliesstoff hergestellt und mit NBR imprägniert. Durch Spaltung wird ein Fersenfutter mit einem Flächengewicht von 320 g/m2 und einer Dicke von 0,85 mm erhalten.Comparative example A nonwoven fabric is made from polyester and polypropylene staple fibers by intensive needling and impregnated with NBR. A heel lining with a basis weight of 320 g / m 2 and a thickness of 0.85 mm is obtained by splitting.
Ein Vergleich der Festigkeitswerte und der Abriebbeständigkeit ist in der nachfolgenden Tabelle 1 zusammengestellt. Dabei wurde die Abriebfestigkeit in der Weise bestimmt, daß ein Probekörper mit 90 mm 0 in einen Rotationsspannkopf eingespannt und mit einem Scheuerdruck von 2,8 N/cm2 belastet wird. Der Drehwinkel des Spannkopfes beträgt 50 Grad. Das Prüfmuster wird gegen ein Scheuerelement getestet, welches Rauten auf seiner Oberfläche aufweist. Die Meßprobe wird mit Wasser benetzt und in zyklische Hin- und Herbewegung versetzt, wobei ein Scheuerzyklus aus 300 Hin- und Herbewegungen besteht, an den sich eine visuelle Beurteilung anhand einer Benotungsvorlage anschließt. A comparison of the strength values and the abrasion resistance is summarized in Table 1 below. The abrasion resistance was determined in such a way that a test specimen with 90 mm 0 was clamped in a rotary clamping head and loaded with a scouring pressure of 2.8 N / cm 2 . The angle of rotation of the clamping head is 50 degrees. The test sample is tested against a scouring element which has diamonds on its surface. The test sample is wetted with water and cycled back and forth, a scrubbing cycle consisting of 300 back and forth movements, which is followed by a visual assessment based on a grading template.
Tabelle 1 Table 1

Claims

Patentansprüche claims
1. Fersenfutter für die Schuhindustrie bestehend aus einem mit einem Polymer imprägnierten Vliesstoff mit Flächengewichten von 180 bis 350 g/m2 und Weiterreißfestigkeiten sowohl in Längs- als auch in1. Heel lining for the shoe industry consisting of a nonwoven fabric impregnated with a polymer with weights per unit area of 180 to 350 g / m 2 and tear resistance both in longitudinal and in
Querrichtung > 15 N, wobei der Vliesstoff aus schmelzgesponnenen, aerodynamisch verstreckten und unmittelbar zu einem Vlies abgelegten Mehrkomponenten-Endlosfilamenten mit einem Titer < 2 dtex besteht und die Mehrkomponenten-Endlosfilamente nach einer Vorverfestigung zumindest zu 90 % zu Supermikro-Endlosfilamenten mit einem TiterTransverse direction> 15 N, whereby the nonwoven fabric consists of melt-spun, aerodynamically stretched, and multi-component continuous filaments with a titer of <2 dtex, which are immediately deposited to form a nonwoven, and the multi-component continuous filaments after pre-consolidation at least 90% to super-micro continuous filaments with a titer
< 0,2 dtex gesplittet und verfestigt sind.<0.2 dtex are split and solidified.
2. Fersenfutter nach Anspruch 1 , bei dem das Mehrkomponenten- Endlosfilament ein Bikomponenten-Endlosfilament aus zwei inkompatiblen Polymeren, insbesondere einem Polyester und einem2. Heel lining according to claim 1, wherein the multi-component continuous filament is a bicomponent continuous filament made of two incompatible polymers, in particular a polyester and one
Polyamid, ist.Polyamide.
3. Fersenfutter nach Anspruch 2, bei dem der Polyersteranteil im Mehrkomponenten-Endlosfilament höher als der Polyamidanteil ist.3. Heel lining according to claim 2, in which the proportion of polyester in the multi-component continuous filament is higher than the proportion of polyamide.
4. Fersenfutter nach Anspruch 3, bei dem das Gewichtsverhältnis von Polyesteranteil zu Polyamidanteil im Mehrkomponenten-Endlosfilament 1 ,1 :1 bis 3:1 ist.4. Heel lining according to claim 3, wherein the weight ratio of polyester to polyamide in the multi-component continuous filament is 1: 1: 3: 1.
5. Fersenfutter nach einem der Ansprüche 1 bis 4, bei dem die Mehrkomponenten-Endlosfilamente einen Querschnitt mit orangenartiger Multisegment-Struktur aufweisen, wobei die Segmente alternierend jeweils eines der beiden inkompatiblen Polymeren enthalten. 5. Heel lining according to one of claims 1 to 4, in which the multi-component continuous filaments have a cross section with orange-like multi-segment structure, the segments alternately each containing one of the two incompatible polymers.
6. Fersenfutter nach einem der Ansprüche 1 bis 5, bei dem der aus dem Mehrkomponenten-Endlosfilamenten gebildete Vliesstoff zur Vorverfestigung pre-kalandriert ist.6. Heel lining according to one of claims 1 to 5, in which the nonwoven fabric formed from the multi-component continuous filaments is pre-calendered for pre-consolidation.
7. Fersenfutter nach einem der Ansprüche 1 bis 6, mindestens eines der das Mehrkomponenten-Endlosfilament bildenden inkompatiblen Polymere ein Additiv, wie Farbpigmente, permanent wirkende Antistatika und / oder hydrophile, charakterbeeinflussende Zusätze in Mengen bis zu 15 Gew.-%, enthält.7. Heel lining according to one of claims 1 to 6, at least one of the multi-component continuous filament-forming incompatible polymers an additive, such as color pigments, permanent antistatic agents and / or hydrophilic, character-influencing additives in amounts up to 15 wt .-%.
8. Fersenfutter nach einem der Ansprüche 1 bis 7, bei dem das Mehrkomponenten-Endlosfilament ungekräuselt ist.8. Heel lining according to one of claims 1 to 7, wherein the multi-component continuous filament is uncrimped.
9. Fersenfutter nach einem der Ansprüche 1 bis 8, bei dem der Vliesstoff mit 20 bis 50 Gew.-% eines Polymeren, bezogen auf das9. Heel lining according to one of claims 1 to 8, in which the nonwoven fabric with 20 to 50 wt .-% of a polymer, based on the
Ausgangsgewicht des Vliesstoffes, imprägniert ist.Starting weight of the nonwoven is impregnated.
10. Fersenfutter nach einem der Ansprüche 1 bis 9 dadurch gekennzeichnet, daß eine hochwertige nubukartige Oberfläche nach dem Schleifen, hervorgerufen durch an der Oberfläche freigelegte10. Heel lining according to one of claims 1 to 9, characterized in that a high-quality nubuck-like surface after grinding, caused by exposed on the surface
Mikrofilament-Enden, entsteht.Microfilament ends.
11. Fersenfutter nach einem der Ansprüche 1 bis 10, bei dem eine der Seiten mit einem Schmelzkleberauftrag versehen ist.11. Heel lining according to one of claims 1 to 10, in which one of the sides is provided with a hot-melt adhesive application.
12. Verfahren zur Herstellung eines Fersenfutters nach einem der Ansprüche 1 bis 11 , dadurch gekennzeichnet, daß Mehrkomponenten- Endlosfilamente aus der Schmelze ersponnen, aerodynamisch verstreckt und unmittelbar zu einem Vlies abgelegt werden, eine Vorverfestigung durch Beikalandrieren oder Vernadeln erfolgt und der Vliesstoff durch Hochdruckfluidstrahlen verfestigt sowie gleichzeitig in Supermikrofilamente mit einem Titer < 0,2 dtex gesplittet sowie anschließend eine Imprägnierung mit einem Polymer erfolgt.12. A method for producing a heel lining according to one of claims 1 to 11, characterized in that multicomponent continuous filaments are spun from the melt, aerodynamically stretched and deposited immediately to form a nonwoven fabric, pre-consolidation is carried out by means of trimming or needling and the Non-woven fabric is consolidated by high-pressure fluid jets and simultaneously split into super microfilaments with a titer of <0.2 dtex and then impregnated with a polymer.
13. Verfahren nach Anspruch 12, dadurch gekennzeichnet, daß die Verfestigung und Splittung der Mehrkomponenten-Endlosfilamente dadurch erfolgt, daß der vorverfestigte Vliesstoff mehrfach abwechselnd von beiden Seiten mit Hochdruck-Wasserstrahlen beaufschlagt wird.13. The method according to claim 12, characterized in that the solidification and splitting of the multi-component continuous filaments takes place in that the pre-consolidated nonwoven fabric is acted upon several times alternately by high pressure water jets.
14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß das Verfestigen und Splitten des Mehrkomponenten-Endlosfilaments auf einem Aggregat mit rotierenden Siebtrommeln durchgeführt wird.14. The method according to claim 13, characterized in that the solidification and splitting of the multi-component continuous filament is carried out on an aggregate with rotating sieve drums.
15. Verfahren nach einem der Ansprüche 12 bis 14, dadurch gekennzeichnet, daß die Imprägnierung mit einem Polymer mit einer wäßrigen Polyurethanlatexdispersion vorgenommen wird.15. The method according to any one of claims 12 to 14, characterized in that the impregnation is carried out with a polymer with an aqueous polyurethane latex dispersion.
16. Verfahren nach einem der Ansprüche 12 bis 15, dadurch gekennzeichnet, daß seine Nachbehandlung durch Schleifen oder Buffen vorgenommen wird. 16. The method according to any one of claims 12 to 15, characterized in that its post-treatment is carried out by grinding or buffing.
EP00956508A 1999-10-05 2000-09-01 Use of a fleece as heel lining for use in the shoe industry Expired - Lifetime EP1224355B1 (en)

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DE19960063C2 (en) * 1999-12-13 2002-03-14 Freudenberg Carl Kg Lining for the shoe industry
DE10219929A1 (en) * 2002-05-03 2003-12-04 Freudenberg Carl Kg Process for improving softness and / or dropping nonwovens
DK2128320T3 (en) * 2008-05-29 2014-01-13 Reifenhaeuser Gmbh & Co Kg Method and apparatus for making filter cloth of filaments
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