WO2003043551A1 - Flat product - Google Patents

Flat product Download PDF

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Publication number
WO2003043551A1
WO2003043551A1 PCT/EP2002/012914 EP0212914W WO03043551A1 WO 2003043551 A1 WO2003043551 A1 WO 2003043551A1 EP 0212914 W EP0212914 W EP 0212914W WO 03043551 A1 WO03043551 A1 WO 03043551A1
Authority
WO
WIPO (PCT)
Prior art keywords
product according
surface areas
cotton
product
layer
Prior art date
Application number
PCT/EP2002/012914
Other languages
German (de)
French (fr)
Inventor
Richard FRUHWÜRTH
Original Assignee
Rauscher Consumer Products Gmbh
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 Rauscher Consumer Products Gmbh filed Critical Rauscher Consumer Products Gmbh
Priority to AU2002358019A priority Critical patent/AU2002358019A1/en
Priority to EP02791688A priority patent/EP1446080A1/en
Priority to US10/495,798 priority patent/US20050009432A1/en
Publication of WO2003043551A1 publication Critical patent/WO2003043551A1/en

Links

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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D04H1/495—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet for formation of patterns, e.g. drilling or rearrangement
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/36—Surgical swabs, e.g. for absorbency or packing body cavities during surgery
    • 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
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial 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
    • D04H13/00—Other non-woven fabrics
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]

Definitions

  • the invention relates to a flat product for skin and / or wound treatment and for baby care, in particular a cotton pad, with at least one treatment area.
  • Products of this type are widely used for applying or removing cosmetic products or else for treating wounds, such as dabbing off wound secretions, and can also be used for baby care.
  • wounds such as dabbing off wound secretions
  • products of this type are widely used for applying or removing cosmetic products or else for treating wounds, such as dabbing off wound secretions, and can also be used for baby care.
  • defective product properties with regard to the absorption and / or release of additives, such as cosmetics and / or wound secretions are frequently observed.
  • damage in the form of cracks or the like occurs in many cases when the known products are used.
  • the object of the invention is to provide a flat product of the type described at the outset, which shows satisfactory product properties for different uses, while at the same time ensuring sufficient product stability.
  • this object is achieved by a further development of the known products, which is essentially characterized in that the product has at least two outer surface areas with different properties.
  • the two outer surface areas can each be a treatment surface.
  • at least one of the outer surface areas can also be designed as a reinforcement of the product, in order to prevent damage during use.
  • the products according to the invention therefore enable adaptation to different operating conditions on the one hand and increased stability on the other.
  • the outer surface areas can differ from one another in terms of their material, their structure and / or their color.
  • particular consideration is also given to those embodiments in which outer surface areas which differ from one another in terms of their material and / or their structure are characterized by a corresponding coloring.
  • the outer surface areas it has proven to be particularly expedient for the outer surface areas to be formed in the region of opposing boundary surfaces of the product, preferably to form these boundary surfaces completely, because such products are realized in a particularly simple form as a laminate or layer structure can.
  • at least one of the outer surface areas consists essentially, ie at least 50%, of cotton.
  • the use of such embodiments is also contemplated, in which one of the outer surface regions consists of 100% cotton, while another outer surface region has other fibers with a proportion of 50% or more.
  • At least one of the outer surface areas for example made of cotton, has a profiling or creasing or a different surface structure, for example by bombarding a corresponding one Cotton layer can be generated with water jets or is achieved by other suitable technological measures.
  • the product according to the invention can also have at least one outer surface area which consists at least partially of synthetic fibers. Particularly favorable properties can be achieved if this outer surface area consists at least partially of a fleece, in particular polyester fleece.
  • the use of covers formed at least partially from cellulose is also considered as the outer surface area.
  • This invention also covers the use of nonwovens in mixtures of synthetic and / or natural fibers, it being possible for all of the nonwovens which can be used in the context of this invention to be thermally, chemically and / or strengthened with water jets. Nonwovens with masses of 15 g / m 2 and above can be used.
  • At least one of the outer surface areas can be colored in order to enable a reliable differentiation of the different outer surface areas.
  • this outer surface area has a carded fiber web in which the individual fibers are oriented in a preferred direction.
  • the layer structure in the case of products consisting at least partially of cotton fibers has a cotton layer having at least one cotton layer.
  • the cotton layer has at least two carded cotton webs, between which a random fleece is arranged, or all layers consist of carded webs.
  • the stability can be increased without impairing the suction properties of the cotton layer if two carded layers of cotton are arranged on each side of the tangled fleece.
  • the layer structure can be implemented particularly easily if at least one preferably colored polyester fleece is provided in the above-mentioned fleece variants.
  • a further increase in the stability of products according to the invention can be achieved if at least one layer of the layer structure is preferably consolidated with a water jet consolidation system.
  • a method for producing products according to the invention with an outer surface area consisting of cotton fibers is explained below by way of example. Cotton is used as raw material in the form of fiber bales for the manufacture of the product. These fiber bales are opened with the help of roller openers and box feeders and - broken down into fiber flakes.
  • the fiber flocks are then transported pneumatically via pipes to the filling layers of a total of 4 cards.
  • a total of four fiber webs that can be used to produce products according to the invention are produced with these cards.
  • An additional layer of the product according to the invention is prepared with a further unit (random fleece card Rando). Another type of cotton is opened with this unit and a so-called tangled fleece is produced.
  • a cotton layer is produced from the four fiber webs already present and the random web, in which the random web is arranged between two cotton webs (underlay / top layer) as an intermediate or middle pile.
  • the two bottom sheets each have a mass per unit area of approximately 15 g / m 2 .
  • the top web or nonwoven layers preferably have approximately the same basis weight.
  • the intermediate layer has a mass per unit area of 170 g / m 2 .
  • the total basis weight of the cotton fleeces is then 230 g / m 2 .
  • this cotton layer is covered with a layer forming a further outer surface area with the desired material properties.
  • a colored polyester fleece in the above-mentioned fleece variants with a mass per unit area of 30 g / m 2 can be used.
  • the finished product consists of two individual materials, namely a cotton layer and a polyester fleece. These individual materials can be brought into a water jet consolidation system via conveyor belts and solidified there.
  • the solidification is expediently carried out with a water pre-pressure of 10 bar for the pre-moistening and in each case 38 bar for the upper and lower layers.
  • the boundary surface of the cotton layer not covered with the polyester fleece is bombarded with water jets so as to achieve a grooving (groove spacing 1-4 mm by the water jets formed.
  • the product thus obtained has an outer surface made of cotton with a grooved structure and a second, the first
  • the bombarded and still water-enriched fleece is then dried to a residual moisture content of 3% in a sieve drum dryer at 140 ° C.
  • the intermediate product thus obtained is made into four individual rolls, each with a width of The individual rolls are wound up into a length of 450 running meters / roll.
  • the base material obtained in this way is then introduced into suitable punching devices, where the finished pads are punched out.
  • This processing is expediently carried out with several processing tools, such as i n a 3 hole punch.
  • the residual material remaining after the punching process is subjected to a separating process in which the two layers, namely the polyester fleece and the cotton layer, are separated from one another.
  • the fleece layer is wound up separately.
  • the cotton layer goes into the material cycle and is used there in particular to produce the intermediate layer.
  • the process for producing products according to the invention is essentially characterized in that two layers or layers with different properties are laminated and, if appropriate, subjected to a further treatment. These layers can be consolidated before, during and / or after the lamination process, for example with a water jet consolidation system. Furthermore, at least one of the layers can also be provided with a structuring, such as a groove structure.
  • the invention is not limited to products manufactured using the manufacturing method explained in detail above. Rather, the use of products is also contemplated in which the polyester fleece is replaced by another fleece consisting at least partially of synthetic fibers or by cellulose. Furthermore, in some cases it is sufficient if only one of the layers is consolidated, and the consolidation and / or structuring can also be achieved with other measures, such as with a roller press or the like. Finally, the mass per unit area of the individual nonwovens can vary, whereby the range of variation for each fleece can reach 50% or more of the stated values. Particularly good results are achieved if the range of variation is less than 20%, in particular less than 10%, with respect to the stated values.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention relates to a flat product for the treatment of the skin and/or wounds, more particularly a cotton pad, comprising at least one surface for treatment. The invention aims at improving said product in such a way that it has at least two outer surface areas with different properties.

Description

Flächiges Produkt Flat product
Die Erfindung betrifft ein flächiges Produkt zur Haut- und/oder Wundbehandlung sowie zur Babypflege, insbesondere ein Wattepad, mit mindestens einer Behandlungsfläche.The invention relates to a flat product for skin and / or wound treatment and for baby care, in particular a cotton pad, with at least one treatment area.
Derartige Produkte werden verbreitet zum Aufbringen oder Entfernen von Kosmetikprodukten oder aber auch zur Wundbehandlung, wie etwa zum Abtupfen von Wundsekret benutzt und können auch zur Babypflege eingesetzt werden. Bei Einsatz der bekannten Produkte zu den genannten Verwendungszwecken werden häufig mangelhafte Produkteigenschaften hinsichtlich der Aufnahme und/oder Abgabe von Zusatzstoffen, wie etwa Kosmetika und/oder Wundsekreten beobachtet. Femer treten beim Einsatz der bekannten Produkte in vielen Fällen Beschädigungen in Form von Rißbildungen o. dgl. auf.Products of this type are widely used for applying or removing cosmetic products or else for treating wounds, such as dabbing off wound secretions, and can also be used for baby care. When using the known products for the stated purposes, defective product properties with regard to the absorption and / or release of additives, such as cosmetics and / or wound secretions, are frequently observed. Furthermore, damage in the form of cracks or the like occurs in many cases when the known products are used.
Angesichts der vorstehend erläuterten Probleme im Stand der Technik liegt der Erfindung die Aufgabe zugrunde, ein flächiges Produkt der eingangs beschriebenen Art bereitzustellen, welches bei unterschiedlichen Verwendungen zufriedenstellende Produkteigenschaften zeigt, wobei gleichzeitig eine hinreichende Produktstabilität sichergestellt ist. Erfindungsgemäß wird diese Aufgabe durch eine Weiterbildung der bekannten Produkte gelöst, die im wesentlichen dadurch gekennzeichnet ist, daß das Produkt mindestens zwei Außenflächenbereiche mit sich voneinander unterscheidenden Eigenschaften aufweist.In view of the problems in the prior art explained above, the object of the invention is to provide a flat product of the type described at the outset, which shows satisfactory product properties for different uses, while at the same time ensuring sufficient product stability. According to the invention, this object is achieved by a further development of the known products, which is essentially characterized in that the product has at least two outer surface areas with different properties.
Diese Erfindung geht auf die verblüffend einfache Erkenntnis zurück, daß zufriedenstellende Produkteigenschaften bei verschiedenen Einsatzbedingungen dadurch sichergestellt werden können, daß das Produkt selbst jeweils für unterschiedliche Einsatzbedingungen optimierte Produktbereiche aufweist. Dabei kann es sich bei den beiden Außenflächenbereichen jeweils um eine Behandlungsfläche handeln. Alternativ oder zusätzlich kann mindestens einer der Außenflächenbereiche auch als Verstärkung des Produktes ausgelegt sein, um so eine Beschädigung während des Einsatzes zu verhindern. Insgesamt wird daher durch die erfindungsgemäßen Produkte einerseits eine Anpassung an unterschiedliche Einsatzbedingungen und andererseits eine erhöhte Stabilität ermöglicht.This invention is based on the astonishingly simple finding that satisfactory product properties can be ensured under different conditions of use by the fact that the product itself has product areas optimized for different conditions of use. The two outer surface areas can each be a treatment surface. Alternatively or additionally, at least one of the outer surface areas can also be designed as a reinforcement of the product, in order to prevent damage during use. Overall, the products according to the invention therefore enable adaptation to different operating conditions on the one hand and increased stability on the other.
Zur Bereitstellung der gewünschten Eigenschaften können sich die Außenflächenbereiche hinsichtlich ihres Materials, ihrer Struktur und/oder ihrer Farbe voneinander unterscheiden. Dabei ist insbesondere auch an solche Ausführungsformen gedacht, bei denen sich hinsichtlich ihres Materials und/oder ihrer Struktur voneinander unterscheidende Außenflächenbereiche durch eine entsprechende Farbgebung gekennzeichnet sind.To provide the desired properties, the outer surface areas can differ from one another in terms of their material, their structure and / or their color. In this context, particular consideration is also given to those embodiments in which outer surface areas which differ from one another in terms of their material and / or their structure are characterized by a corresponding coloring.
Im Rahmen der Erfindung ist auch an die Bereitstellung von flächigen Produkten gedacht, bei denen eine Begrenzungsfläche zwei unterschiedliche Außenflächenbereiche aufweist. Insbesondere im Hinblick auf eine kostengünstige Herstellung hat es sich jedoch als besonders zweckmäßig erwiesen, daß die Außenflächebereiche im Bereich von einander entgegengesetzten Begrenzungsflächen des Produktes gebildet sind, vorzugsweise diese Begrenzungsflächen vollständig bilden, weil derartige Produkte in besonders einfacher Form als Laminat bzw. Lagenstruktur verwirklicht werden können. Im Hinblick auf die im allgemeinen gewünschte hohe Hautverträglichkeit ist es besonders vorteilhaft, wenn mindestens einer der Außenflächenbereiche im wesentlichen, d.h. zu mindestens 50% aus Baumwolle besteht. Im Rahmen dieser Erfindung ist aber auch an den Einsatz von solchen Ausführungsformen gedacht, bei denen eine der Außenflächenbereiche zu 100% aus Baumwolle besteht, während ein anderer Außenflächenbereich andere Fasern mit einem Anteil von 50% oder mehr aufweist. Insbesondere für den Einsatz erfindungsgemäßer Produkte zum Entfernen von Kosmetikprodukten hat es sich ferner als günstig erwiesen, wenn mindestens einer der beispielsweise aus Baumwolle bestehenden Außenflächenbereiche eine Profilierung bzw. Rillung oder eine andersartige Oberflächenstruktur aufweist, welche beispielsweise durch Beschüß einer entsprechenden Baumwollage mit Wasserstrahlen erzeugt werden kann bzw. durch andere geeignete technologische Maßnahmen erreicht wird.Within the scope of the invention, provision is also made for the provision of flat products in which a boundary surface has two different outer surface areas. Particularly with regard to cost-effective production, however, it has proven to be particularly expedient for the outer surface areas to be formed in the region of opposing boundary surfaces of the product, preferably to form these boundary surfaces completely, because such products are realized in a particularly simple form as a laminate or layer structure can. In view of the generally desired high skin tolerance, it is particularly advantageous if at least one of the outer surface areas consists essentially, ie at least 50%, of cotton. Within the scope of this invention, however, the use of such embodiments is also contemplated, in which one of the outer surface regions consists of 100% cotton, while another outer surface region has other fibers with a proportion of 50% or more. In particular, for the use of products according to the invention for removing cosmetic products, it has also proven to be advantageous if at least one of the outer surface areas, for example made of cotton, has a profiling or creasing or a different surface structure, for example by bombarding a corresponding one Cotton layer can be generated with water jets or is achieved by other suitable technological measures.
Je nach Einsatzzweck und/oder zum Erhalt einer zufriedenstellenden Stabilität kann das erfindungsgemäße Produkt auch mindestens einen zumindest teilweise aus Kunstfasern bestehenden Außenflächenbereich aufweisen. Besonders günstige Eigenschaften können dabei erzielt werden, wenn dieser Außenflächenbereich zumindest teilweise aus einem Vlies, insbesondere Polyestervlies besteht. Ferner ist im Rahmen der Erfindung auch an den Einsatz von zumindest teilweise aus Zellstoff gebildeten Abdeckungen als Außenflächenbereich gedacht. Ebenso wird mit dieser Erfindung der Einsatz von Vliesstoffen in Mischungen von synthetischen und/oder Naturfasern erfasst, wobei sämtliche im Rahmen dieser Erfindung einsetzbare Vliesstoffe thermisch, chemisch und/oder mit Wasserstrahlen verfestigt sein können. Dabei können Vliesstoffe mit Flächenmassen ab 15 g/m2 zum Einsatz kommen Wie vorstehend bereits erläutert, kann mindestens einer der Außenflächenbereiche farbig sein, um so eine zuverlässige Unterscheidung der verschiedenen Außenflächenbereiche zu ermöglichen. Insbesondere beim Einsatz erfindungsgemäßer Produkte mit einem aus Baumwollfasern gebildeten Außenflächenbereich hat es sich zum Erhalt einer zufriedenstellenden Stabilität als günstig erwiesen, wenn dieser Außenflächenbereich einen kardierten Faserflor aufweist, bei dem die einzelnen Fasern längs einer Vorzugsrichtung ausgerichtet sind.Depending on the intended use and / or in order to maintain satisfactory stability, the product according to the invention can also have at least one outer surface area which consists at least partially of synthetic fibers. Particularly favorable properties can be achieved if this outer surface area consists at least partially of a fleece, in particular polyester fleece. Furthermore, in the context of the invention, the use of covers formed at least partially from cellulose is also considered as the outer surface area. This invention also covers the use of nonwovens in mixtures of synthetic and / or natural fibers, it being possible for all of the nonwovens which can be used in the context of this invention to be thermally, chemically and / or strengthened with water jets. Nonwovens with masses of 15 g / m 2 and above can be used. As already explained above, at least one of the outer surface areas can be colored in order to enable a reliable differentiation of the different outer surface areas. In particular when using products according to the invention with an outer surface area formed from cotton fibers, it has proven to be advantageous to obtain a satisfactory stability if this outer surface area has a carded fiber web in which the individual fibers are oriented in a preferred direction.
Eingangs wurde bereits erläutert, daß erfindungsgemäße Produkte herstellungstechnisch besonders einfach mit einer Lagenstruktur verwirklicht werden können. Dabei weist die Lagenstruktur bei zumindest teilweise aus Baumwollfasern bestehenden Produkten eine mindestens eine Baumwollage aufweisende Baumwollschicht auf. Im Hinblick auf den Erhalt einer guten Stabilität bei gleichzeitiger Sicherstellung eines zufriedenstellenden Saugvermögens hat es sich als besonders günstig erwiesen, wenn die Baumwollschicht mindestens zwei kardierte Baumwollflore aufweist, zwischen denen ein Wirrvlies angeordnet ist, oder alle Lagen aus kardierten Floren bestehen. Die Stabilität kann ohne Beeinträchtigung der Saugeigenschaften der Baumwollschicht erhöht werden, wenn auf jeder Seite des Wirrvlieses zwei kardierte Baum- wollagen angeordnet sind. Falls das erfindungsgemäße Produkt eine zumindest teilweise aus Kunstfasern bestehende Außenfläche aufweist, kann die Lagenstruktur besonders einfach verwirklicht werden, wenn mindestens ein vorzugsweise farbiges Polyestervlies in den o.g. Vliesvarianten vorgesehen ist. Eine weitere Erhöhung der Stabilität erfindungsgemäßer Produkte kann erreicht werden, wenn mindestens eine Lage der Lagenstruktur vorzugsweise mit einer Wasserstrahlverfestigungsanlage verfestigt ist. Nachstehend wird beispielhaft ein Verfahren zum Herstellen erfindungsgemäßer Produkte mit einem aus Baumwollfasern bestehenden Außenflächenbereich erläutert. Dabei wird für die Herstellung des Produktes als Rohstoff in Form von Faserballen angelieferte Baumwolle benutzt. Diese Faserballen werden mit Hilfe von Walzenöffner und Kastenspeiser geöffnet und - zu Faserflocken aufgelöst. Anschließend werden die Faserflocken pneumatisch über Rohrleitungen zu den Füllschichten von insgesamt 4 Karden transportiert. Mit diesen Karden werden insgesamt vier zur Herstellung erfindungsgemäßer Produkte einsetzbare Faserflore erzeugt. Mit einem weiteren Aggregat (Wirrvlieskrempel Rando) wird eine zusätzliche Lage des erfindungsgemäßen Produktes vorbereitet. Dabei wird mit diesem Aggregat eine andere Type Baumwolle geöffnet und ein sogenanntes Wirrvlies erzeugt. Als nächstes wird aus den jetzt bereits vorliegenden vier Faserfloren und dem Wirrvlies eine Baumwollschicht hergestellt, bei der das Wirrvlies zwischen jeweils zwei Baumwollfloren (Unterlage/Oberlage) als Zwischenflor bzw. Mittelflor angeordnet ist. Die beiden Unterflore weisen dabei eine Flächenmasse von jeweils etwa 15 g/m2 auf. Die Oberflore bzw Obervlieslagen weisen vorzugsweise etwa dieselbe Flächenmasse auf. Als besonders zweckmäßig hat es sich erwiesen, wenn die Zwischenlage eine Flächenmasse von 170 g/m2 aufweist. Die Gesamt-Flächenmasse der Baumwollvliese beträgt dann 230 g/m2. Im nächsten Herstellungsschritt wird diese Baumwollschicht mit einer einen weiteren Außenflächenbereich bildenden Schicht mit jeweils gewünschten Materialeigenschaften gedeckt. Dabei kann beispielsweise ein farbiges Polyestervlies in den o.g. Vliesvarianten mit einer Flächenmasse von 30 g/m2 eingesetzt werden. Dann besteht das fertige Produkt aus zwei Einzelmaterialien, nämlich einer Baumwollschicht und einem Polyestervlies. Diese einzelnen Materialien können über Transportbänder in eine Wasserstrahlverfestigungsanlage eingebracht und dort verfestigt werden. Die Verfestigung erfolgt zweckmäßigerweise mit einem Wasservordruck von 10 bar für die Vorbefeuchtung und jeweils 38 bar für das Oberflor und Unterflor. Zusätzlich wird die nicht mit dem Polyestervlies abgedeckte Begrenzungsfläche der Baumwollschicht mit Wasserstrahlen beschossen, um so eine Rillung (Rillenabstand 1-4 mm durch die gebildeten Wasserstrahlen zu verwirklichen. Das so erhaltene Produkt weist eine Außenfläche aus Baumwolle mit einer Rillenstruktur und eine zweite, der ersten Außenfläche entgegengesetzte Außenfläche in Form eines Polyestervlieses auf. Im Anschluß daran wird das beschossene und noch mit Wasser angereicherte Vlies in einem Siebtrommeltrockner bei 140°C bis auf eine Restfeuchte von 3 % getrocknet. Das so erhaltene Zwischenprodukt wird zu vier Einzelrollen mit einer Breite von jeweils 20 cm konfektioniert. Die Aufwicklung dieser Einzelrollen erfolgt in einer Länge von 450 lfm/Rolle. Das so erhaltene Grundmaterial wird im Anschluß in geeignete Stanzgeräte eingeführt, wo die fertigen Pads ausgestanzt werden. Zweckmäßigerweise erfolgt diese Bearbeitung mit mehreren Bearbeitungswerkzeugen, wie etwa in einer 3-Lochstanze. Das nach dem Stanzvorgang verbleibende Restmaterial wird einem Trennvorgang unterzogen, in der die beiden Schichten, nämlich das Polyestervlies und die Baumwollschicht voneinander getrennt werden. Die Vliesschicht wird separat aufgewickelt. Die Baumwollschicht geht in den Materialkreislauf und wird dort insbesondere zum Herstellen der Zwischenlage eingesetzt.It has already been explained at the beginning that products according to the invention can be produced particularly easily with a layer structure in terms of production technology. The layer structure in the case of products consisting at least partially of cotton fibers has a cotton layer having at least one cotton layer. With a view to maintaining good stability while at the same time ensuring satisfactory absorbency, it has proven to be particularly advantageous if the cotton layer has at least two carded cotton webs, between which a random fleece is arranged, or all layers consist of carded webs. The stability can be increased without impairing the suction properties of the cotton layer if two carded layers of cotton are arranged on each side of the tangled fleece. If the product according to the invention has an outer surface consisting at least partially of synthetic fibers, the layer structure can be implemented particularly easily if at least one preferably colored polyester fleece is provided in the above-mentioned fleece variants. A further increase in the stability of products according to the invention can be achieved if at least one layer of the layer structure is preferably consolidated with a water jet consolidation system. A method for producing products according to the invention with an outer surface area consisting of cotton fibers is explained below by way of example. Cotton is used as raw material in the form of fiber bales for the manufacture of the product. These fiber bales are opened with the help of roller openers and box feeders and - broken down into fiber flakes. The fiber flocks are then transported pneumatically via pipes to the filling layers of a total of 4 cards. A total of four fiber webs that can be used to produce products according to the invention are produced with these cards. An additional layer of the product according to the invention is prepared with a further unit (random fleece card Rando). Another type of cotton is opened with this unit and a so-called tangled fleece is produced. Next, a cotton layer is produced from the four fiber webs already present and the random web, in which the random web is arranged between two cotton webs (underlay / top layer) as an intermediate or middle pile. The two bottom sheets each have a mass per unit area of approximately 15 g / m 2 . The top web or nonwoven layers preferably have approximately the same basis weight. It has proven particularly expedient if the intermediate layer has a mass per unit area of 170 g / m 2 . The total basis weight of the cotton fleeces is then 230 g / m 2 . In the next manufacturing step, this cotton layer is covered with a layer forming a further outer surface area with the desired material properties. For example, a colored polyester fleece in the above-mentioned fleece variants with a mass per unit area of 30 g / m 2 can be used. Then the finished product consists of two individual materials, namely a cotton layer and a polyester fleece. These individual materials can be brought into a water jet consolidation system via conveyor belts and solidified there. The solidification is expediently carried out with a water pre-pressure of 10 bar for the pre-moistening and in each case 38 bar for the upper and lower layers. In addition, the boundary surface of the cotton layer not covered with the polyester fleece is bombarded with water jets so as to achieve a grooving (groove spacing 1-4 mm by the water jets formed. The product thus obtained has an outer surface made of cotton with a grooved structure and a second, the first The bombarded and still water-enriched fleece is then dried to a residual moisture content of 3% in a sieve drum dryer at 140 ° C. The intermediate product thus obtained is made into four individual rolls, each with a width of The individual rolls are wound up into a length of 450 running meters / roll. The base material obtained in this way is then introduced into suitable punching devices, where the finished pads are punched out. This processing is expediently carried out with several processing tools, such as i n a 3 hole punch. The residual material remaining after the punching process is subjected to a separating process in which the two layers, namely the polyester fleece and the cotton layer, are separated from one another. The fleece layer is wound up separately. The cotton layer goes into the material cycle and is used there in particular to produce the intermediate layer.
Wie vorstehend erläutert, ist das Verfahren zur Herstellung erfindungsgemäßer Produkte im wesentlichen dadurch gekennzeichnet, daß zwei Schichten bzw. Lagen mit unterschiedlichen Eigenschaften laminiert und ggf. einer weiteren Behandlung unterzogen werden. Dabei können diese Schichten vor, während und/oder nach dem Laminierungsvorgang beispielsweise mit einer Wasserstrahlverfestigungsanlage verfestigt werden. Ferner kann auch mindestens eine der Schichten mit einer Strukturierung, wie etwa einer Rillenstruktur versehen werden.As explained above, the process for producing products according to the invention is essentially characterized in that two layers or layers with different properties are laminated and, if appropriate, subjected to a further treatment. These layers can be consolidated before, during and / or after the lamination process, for example with a water jet consolidation system. Furthermore, at least one of the layers can also be provided with a structuring, such as a groove structure.
Die Erfindung ist allerdings nicht auf mit dem vorstehend im einzelnen erläuterten Herstellungsverfahren hergestellte Produkte beschränkt. Vielmehr ist auch an den Einsatz von Produkten gedacht, bei denen das Polyestervlies durch ein anderes zumindest teilweise aus Kunstfasern bestehendes Vlies oder durch Zellstoff ersetzt ist. Ferner reicht es in einigen Fällen aus, wenn nur eine der Schichten verfestigt wird, auch kann die Verfestigung und/oder Strukturieruπg auch mit anderen Maßnahmen erreicht werden, wie etwa mit einer Walzenpresse o. dgl. Schließlich können die Flächenmassen der einzelnen Vliese variieren, wobei die Variationsbreite für jedes Vlies 50% oder mehr der angegebenen Werte erreichen kann. Besonders gute Ergebnisse werden erreicht, wenn die Variationsbreite weniger als 20%, insbesondere weniger als 10% bzgl. der angegebenen Werte beträgt. However, the invention is not limited to products manufactured using the manufacturing method explained in detail above. Rather, the use of products is also contemplated in which the polyester fleece is replaced by another fleece consisting at least partially of synthetic fibers or by cellulose. Furthermore, in some cases it is sufficient if only one of the layers is consolidated, and the consolidation and / or structuring can also be achieved with other measures, such as with a roller press or the like. Finally, the mass per unit area of the individual nonwovens can vary, whereby the range of variation for each fleece can reach 50% or more of the stated values. Particularly good results are achieved if the range of variation is less than 20%, in particular less than 10%, with respect to the stated values.

Claims

n s p r ü c h e : speaks:
1. Flächiges Produkt zur Haut und/oder Wundbehandlung, insbesondere Wattepad, mit mindestens einer Behandlungsfläche, dadurch gekennzeichnet, daß das Produkt mindestens zwei Außenflächenbereiche mit sich voneinander unterscheidenden Eigenschaften aufweist.1. Flat product for skin and / or wound treatment, in particular cotton pad, with at least one treatment area, characterized in that the product has at least two outer surface areas with different properties.
2. Produkt nach Anspruch 1 , dadurch gekennzeichnet, daß sich die Außenflächenbereiche hinsichtlich des Materials, der Struktur und/oder der Farbe voneinander unterscheiden.2. Product according to claim 1, characterized in that the outer surface areas differ in terms of material, structure and / or color.
3. Produkt nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Außenflächenbereich im Bereich voneinander entgegengesetzten Begrenzungsflächen des Produktes gebildet sind, vorzugsweise diese Begrenzungsflächen vollständig bilden.3. Product according to claim 1 or 2, characterized in that the outer surface areas are formed in the area of mutually opposite boundary surfaces of the product, preferably form these boundary surfaces completely.
4. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens einer der Außenflächenbereiche im wesentlichen, d.h. zu mindestens 50% aus Baumwolle besteht.4. Product according to one of the preceding claims, characterized in that at least one of the outer surface areas essentially, i.e. consists of at least 50% cotton.
5. Produkt nach Anspruch 4, dadurch gekennzeichnet, daß mindestens einer der Außenflächebereiche eine vorzugsweise durch Beschuss mit Wasserstrahlen erzeugte Rillung oder andersartige Oberflächenstruktur aufweist.5. Product according to claim 4, characterized in that at least one of the outer surface areas has a crease or other surface structure preferably produced by bombardment with water jets.
6. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens einer der Außenflächenbereiche zumindest teilweise aus Kunstfasern besteht.6. Product according to one of the preceding claims, characterized in that at least one of the outer surface areas consists at least partially of synthetic fibers.
7. Produkt nach Anspruch 6, dadurch gekennzeichnet, daß der zumindest teilweise aus Kunstfasern bestehende Außenflächenbereich ein Vlies, insbesondere Polyestervlies ist, wobei der Kunstfaseranteil vorzugsweise mindestens 50% beträgt.7. Product according to claim 6, characterized in that the at least partially composed of synthetic fibers outer surface area is a nonwoven, in particular polyester nonwoven, the proportion of synthetic fibers preferably being at least 50%.
8. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens einer der Außenflächenbereiche eine beispielsweise zumindest teilweise aus Zellstoff gebildete Abdeckung aufweist.8. Product according to one of the preceding claims, characterized in that at least one of the outer surface areas has a cover, for example at least partially formed from cellulose.
9. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens einer der Außenflächenbereiche farbig ist. 9. Product according to one of the preceding claims, characterized in that at least one of the outer surface areas is colored.
10. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens einer der Außenflächenbereiche einen kardierten Faserflor aufweist.10. Product according to one of the preceding claims, characterized in that at least one of the outer surface areas has a carded fiber web.
11. Produkt nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Produkt eine Lagenstruktur aufweist.11. Product according to any one of the preceding claims, characterized in that the product has a layer structure.
12. Produkt nach Anspruch 11 , dadurch gekennzeichnet, daß die Lagenstruktur eine mindestens eine Baumwollage aufweisende Baumwollschicht aufweist, wobei die Baumwollage vorzugsweise eine Flächenmasse von mindestens 50 g/m2 aufweist.12. Product according to claim 11, characterized in that the layer structure has a cotton layer having at least one cotton layer, the cotton layer preferably having a mass per unit area of at least 50 g / m 2 .
13. Produkt nach Anspruch 12, dadurch gekennzeichnet, daß die Baumwollschicht mindestens zwei kardierte Baumwollflore aufweist, zwischen denen ein Wirrvlies angeordnet ist.13. Product according to claim 12, characterized in that the cotton layer has at least two carded cotton sheets, between which a random fleece is arranged.
14. Produkt nach Anspruch 12, dadurch gekennzeichnet, daß auf jeder Seite des Wirrvlieses zwei kardierte Baumwollagen angeordnet sind.14. Product according to claim 12, characterized in that two carded cotton layers are arranged on each side of the random web.
15. Produkt nach einem der Ansprüche 11 bis 14, dadurch gekennzeichnet, daß die Lagenstruktur mindestens ein vorzugsweise farbiges Polyestervlies aufweist.15. Product according to one of claims 11 to 14, characterized in that the layer structure has at least one preferably colored polyester fleece.
16. Produkt nach einem der Ansprüche 11 bis 15, dadurch gekennzeichnet, daß mindestens eine Lage vorzugsweise mit einer Wasserstrahlverfestigungsanlage verfestigt ist. 16. Product according to one of claims 11 to 15, characterized in that at least one layer is preferably solidified with a water jet consolidation system.
PCT/EP2002/012914 2001-11-20 2002-11-18 Flat product WO2003043551A1 (en)

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