EP1649094B1 - Synthetic cloth, method and system for the production of said cloth - Google Patents

Synthetic cloth, method and system for the production of said cloth Download PDF

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Publication number
EP1649094B1
EP1649094B1 EP04766205A EP04766205A EP1649094B1 EP 1649094 B1 EP1649094 B1 EP 1649094B1 EP 04766205 A EP04766205 A EP 04766205A EP 04766205 A EP04766205 A EP 04766205A EP 1649094 B1 EP1649094 B1 EP 1649094B1
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EP
European Patent Office
Prior art keywords
nonwoven
polyvinyl alcohol
fibres
cloth
polyhydroxyl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04766205A
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German (de)
French (fr)
Other versions
EP1649094A1 (en
Inventor
Karl Dimpfl
Robert W. Fuss
Alfred Watzl
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.)
Truetzschler Nonwovens GmbH
Original Assignee
Fleissner GmbH
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Filing date
Publication date
Priority claimed from DE10345086A external-priority patent/DE10345086A1/en
Application filed by Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP1649094A1 publication Critical patent/EP1649094A1/en
Application granted granted Critical
Publication of EP1649094B1 publication Critical patent/EP1649094B1/en
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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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4309—Polyvinyl alcohol
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • 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
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/68—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions the bonding agent being applied in the form of foam
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D10B2321/06—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals

Definitions

  • Wipes serve to clean the surface of objects and are very beneficial for holding liquids of any kind. To cope with this, they must have a high abrasion resistance and a high absorption capacity of liquids.
  • the cloth has a fully synthetic composition.
  • the EP-B-0 081 218 discloses a wipe consisting of mutually intertwined, temperature-shrinking, hot-water-soluble polyvinyl alcohol fibers impregnated for further bonding with a polyvinyl alcohol resin. During impregnation, the fibers shrink. Therefore, according to the EP, the nonwoven is stretched during impregnation and also during drying. Furthermore, the drying temperature during the drying process must be kept below the softening temperature of the fiber. Although such a cloth has a high abrasion resistance, but the handle is due to the shrunken fibers additionally rubber-like. Problems also arise when storing the treated wipes of this kind over a longer period of time. The plasticized polyvinyl acetal sweats out, resulting in migration of components across the cross section of the web.
  • a wipe known as needled sandwich nonwoven for which it consists of several layers of microfibers of different polymers and in addition of secondary staple fibers that are absorbent. These microfibers have a good cleaning effect but are not liquid receptive. Therefore, the secondary fibers were added, which may also be made of polyvinyl alcohol. Nevertheless, these wipes suffer from lower fluid absorbency.
  • Nonwovens with high durability and high absorption properties and processes for their preparation known.
  • Preferred are organic fiber nonwoven materials in which the polymer has a plurality of pendent hydroxyl groups and contains a binder comprising a partially crosslinked and a partially hydrolyzed polymeric resin having a plurality of pendant hydroxyl groups.
  • a crosslinking agent which consists of organic titanates and amorphous metal oxides, wherein the polymer is derived from monomers to which the general formula is based, in which X is one of the radicals -Si (OR 4 OR 5 OR 6 ) or -O- (CO) R 7 and R 1 to R 7 independently of one another hydrogen, an organic radical having 1 to 10 carbon atoms or combinations of which can mean.
  • the invention has for its object to develop a fully synthetic wipe, which identifies a maximum possible fluid absorbency, a good cleaning effect and a cloth-like handle. It should also be easily for complete cleaning temperatures up to 100 ° C, ie cooking temperatures, can be suspended.
  • the high liquid absorbency is achievable only with polyvinyl alcohol fibers, the fact of fully synthetic composition only with a binder of a polyvinyl alcohol acetal.
  • no shrinking at temperature or heat fibers are used for the fleece, but just not shrinking polyvinyl alcohol fibers, which only needs to achieve the necessary strength of the cloth as needled need to be subsequently impregnated with the acetal.
  • this must be one that contains as plasticizer substances that do not separate from the remaining polymers.
  • the plasticized acetal should not change its property profile in the long term, a migration of components may not arise.
  • the cloth should have a soft touch even when dry and remain cloth-like without changing the cloth and not assume a rubber-like character. It has the great advantage that it has a liquid absorption capacity up to 800% and can be boiled for its own cleaning in addition to the other properties mentioned, and this without changing the dimensions.
  • the plasticizers in this alcohol are chemically bound, separation is not possible.
  • the conversion of the alcohol into a water-insoluble acetal is carried out with a mineral acid or an organic acid.
  • a mineral acid or an organic acid Preference is given to the reaction with the environmentally friendly glyoxylic acid.
  • the organic acid (s) used can (besides) contain carbon, hydrogen and oxygen as well as other hetro- croates, in particular sulfur, nitrogen and phosphorus.
  • aldehyde functions may also be present in compounds employed. Preference is given to the use of oxalic acid.
  • the usable recipe could consist of: product % Share in total water 30 - 70 oxalic acid 10 - 20 Stabilizer T 1 - 3 a color 0,2 - 2 corn starch 1 - 3 Modified, internally plasticized polyhydroxyl compound 25 - 50 formaldehyde 5 - 25
  • a particular embodiment could more specifically consist of: product % Share in total gr percentage g - TS water 45,000 108000 oxalic acid 14.585 35,000 100.0 35,000 Stabilizer T 1,250 3,000 25.0 0,750 a color 0,417 1,000 60.0 0,600 corn starch 1,250 3,000 100.0 3,000 Mowiflex FXT® 305 29.167 70,000 20.0 14,000 formaldehyde 8.333 20,000 37.0 7,400

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

Prior art cloths used for wet and moist cleaning are made of non-woven, shrinking polyvinyl alcohol fibres vortexed by a jet of water, said fibres being secured by a polyvinyl alcohol binding agent. The inventive cloth is made of pure polyvinyl alcohol fibres which do not shrink when used in normal conditions, said fibres being vortexed together in order to increase resistance and being additionally soaked with a binding agent containing a polyhydroxyl group. Softeners are chemically joined thereto and can no longer be separated after foaming and subsequent polycondensation.

Description

Wischtücher dienen der Reinigung der Oberfläche von Gegenständen und sind zur Aufnahme von Flüssigkeiten jeder Art sehr vorteilhaft. Um dies zu bewältigen, müssen sie eine hohe Abriebfestigkeit und ein hohes Aufnahmevermögen von Flüssigkeiten haben.Wipes serve to clean the surface of objects and are very beneficial for holding liquids of any kind. To cope with this, they must have a high abrasion resistance and a high absorption capacity of liquids.

Wegen der aufzunehmenden Verunreinigungen ist es vorteilhaft, wenn das Tuch eine vollsynthetische Zusammensetzung hat. In diesem Zusammenhang ist durch die EP-B-0 081 218 ein Wischtuch bekannt, das aus gegenseitig verflochtenen, bei Temperatureinwirkung schrumpfenden, heißwasserlöslichen Polyvinylalkoholfasern besteht, die zur weiteren Verbindung mit einem Harz aus Polyvinylalkohol imprägniert sind. Bei der Imprägnierung schrumpfen die Fasern. Deshalb wird gemäß der EP das Vlies bei der Imprägnierung und auch während der Trocknung gestreckt. Weiterhin muss die Trocknungstemperatur beim Trockenvorgang unter der Erweichungstemperatur der Faser gehalten werden. Ein solches Tuch hat zwar eine hohe Abriebfestigkeit, aber der Griff ist aufgrund der geschrumpften Fasern zusätzlich gummiähnlich. Probleme entstehen auch, wenn über einen längeren Zeitraum die behandelten Wischtücher dieser Art lagern. Das weichgemachte Polyvinylacetal schwitzt aus, es entsteht eine Migration von Komponenten über den Querschnitt des Vlieses.Because of the impurities to be absorbed, it is advantageous if the cloth has a fully synthetic composition. In this context is through the EP-B-0 081 218 discloses a wipe consisting of mutually intertwined, temperature-shrinking, hot-water-soluble polyvinyl alcohol fibers impregnated for further bonding with a polyvinyl alcohol resin. During impregnation, the fibers shrink. Therefore, according to the EP, the nonwoven is stretched during impregnation and also during drying. Furthermore, the drying temperature during the drying process must be kept below the softening temperature of the fiber. Although such a cloth has a high abrasion resistance, but the handle is due to the shrunken fibers additionally rubber-like. Problems also arise when storing the treated wipes of this kind over a longer period of time. The plasticized polyvinyl acetal sweats out, resulting in migration of components across the cross section of the web.

Weiterhin ist durch die DE-A-199 17 275 ein Wischtuch als vernadeltes Sandwichvlies bekannt, wozu es aus mehreren Schichten aus Mikrofasern unterschiedlicher Polymere und zusätzlich aus Sekundärstapelfasern besteht, die saugfähig sind. Diese Mikrofasern haben eine gute Reinigungswirkung, sind aber nicht flüssigkeitsaufnahmefähig. Deshalb wurden die Sekundärfasern hinzugenommen, die auch aus Polyvinylalkohol hergestellt sein können. Dennoch leiden diese Wischtücher an geringerer Flüssigkeitsaufnahmefähigkeit.Furthermore, by the DE-A-199 17 275 a wipe known as needled sandwich nonwoven, for which it consists of several layers of microfibers of different polymers and in addition of secondary staple fibers that are absorbent. These microfibers have a good cleaning effect but are not liquid receptive. Therefore, the secondary fibers were added, which may also be made of polyvinyl alcohol. Nevertheless, these wipes suffer from lower fluid absorbency.

Außerdem sind aus der internationalen Patentanmeldung WO 94/28223 Nonwovens mit hoher Haltbarkeit und hohen Absorptionseigenschaften sowie Verfahren zu ihrer Herstellung bekannt. Bevorzugt sind Materialien aus einem aus organischen Fasern bestehenden Nonwoven, bei denen das Polymere eine Vielzahl seitenständiger Hydroxylgruppen aufweist und ein Bindemittel enthält, das ein teilweise vernetztes und ein teilweise hydrolysiertes Polymerharz umfasst, das eine Vielzahl von seitenständigen Hydroxylgruppen aufweist. Dabei wird ein Vernetzungsmittel eingesetzt, das aus organischen Titanaten und amorphen Metalloxiden besteht, wobei das Polymere sich von Monomeren ableitet, denen die allgemeine Formel

Figure imgb0001
zugrunde liegt, in der X einer der Reste -Si (OR4 OR5 OR6) oder -O-(CO)R7 sind und R1 bis R7 unabhängig von einander Wasserstoff, einen organischen Rest mit 1 bis 10 Kohlenstoffatomen oder Kombinationen davon bedeuten können.In addition, from the international patent application WO 94/28223 Nonwovens with high durability and high absorption properties and processes for their preparation known. Preferred are organic fiber nonwoven materials in which the polymer has a plurality of pendent hydroxyl groups and contains a binder comprising a partially crosslinked and a partially hydrolyzed polymeric resin having a plurality of pendant hydroxyl groups. In this case, a crosslinking agent is used which consists of organic titanates and amorphous metal oxides, wherein the polymer is derived from monomers to which the general formula
Figure imgb0001
 is based, in which X is one of the radicals -Si (OR 4 OR 5 OR 6 ) or -O- (CO) R 7 and R 1 to R 7 independently of one another hydrogen, an organic radical having 1 to 10 carbon atoms or combinations of which can mean.

Der Erfindung liegt die Aufgabe zugrunde, ein vollsynthetisches Wischtuch zu entwickeln, das eine maximal mögliche Flüssigkeitsaufnahmefähigkeit, eine gute Reinigungswirkung und einen tuchartigen Griff ausweist. Auch soll es problemlos zur vollständigen Reinigung Temperaturen bis zu 100 °C, also Kochtemperaturen, ausgesetzt werden können.The invention has for its object to develop a fully synthetic wipe, which identifies a maximum possible fluid absorbency, a good cleaning effect and a cloth-like handle. It should also be easily for complete cleaning temperatures up to 100 ° C, ie cooking temperatures, can be suspended.

Die hohe Flüssigkeitsaufnahmefähigkeit ist nur mit Polyvinylalkoholfasern erzielbar, die Tatsache der vollsynthetischen Zusammensetzung nur mit einem Bindemittel aus einem Polyvinylalkoholacetal. In einfacher Weise werden aber für das Vlies keine bei Temperatur oder Wärme schrumpfenden Fasern verwendet, sondern eben nicht schrumpfende Polyvinylalkoholfasern, die lediglich zur Erzielung der notwendigen Festigkeit des Tuches verwirbelt, wie vernadelt werden müssen, um anschließend mit dem Acetal imprägniert zu werden. Dieses muss aber ein solches sein, das als Weichmacher Substanzen enthält, die sich nicht von den restlichen Polymeren separieren. Das plastifizierte Acetal soll sein Eigenschaftsprofil auf Dauer nicht verändern, eine Migration von Bestandteilen darf nicht entstehen. Das Tuch soll auch im trockenen Zustand einen weichen Griff haben und bei nassem Tuch unverändert tuchfähig bleiben und nicht einen gummiähnlichen Charakter annehmen. Es solches Tuch hat den großen Vorteil, dass es ein Flüssigkeitsaufnahmevermögen bis zu 800 % hat und neben den anderen genannten Eigenschaften zur eigenen Reinigung gekocht werden kann, und dieses ohne sich in den Abmaßen zu verändern.The high liquid absorbency is achievable only with polyvinyl alcohol fibers, the fact of fully synthetic composition only with a binder of a polyvinyl alcohol acetal. In a simple way, however, no shrinking at temperature or heat fibers are used for the fleece, but just not shrinking polyvinyl alcohol fibers, which only needs to achieve the necessary strength of the cloth as needled need to be subsequently impregnated with the acetal. However, this must be one that contains as plasticizer substances that do not separate from the remaining polymers. The plasticized acetal should not change its property profile in the long term, a migration of components may not arise. The cloth should have a soft touch even when dry and remain cloth-like without changing the cloth and not assume a rubber-like character. It has the great advantage that it has a liquid absorption capacity up to 800% and can be boiled for its own cleaning in addition to the other properties mentioned, and this without changing the dimensions.

Ein Bindemittel dieser Art besteht gemäß DE 102 29 213.2 aus einer Mischung aus:

  1. A) 50,0 bis 99,99 Gewichtsteilen mindestens eines Polymers (A), welches
    1. a.) 1,0 bis 99,9 Gew.-% Struktureinheiten der Formel (1)
      Figure imgb0002
       wobei R1 Wasserstoff oder Methyl bedeutet,
    2. b.) 0 bis 99,0 Gew.-% Struktureinheiten der Formel (2)
      Figure imgb0003
       wobei R2 Wasserstoff oder einen Alkylrest mit 1 bis 6 Kohlenstoffatome darstellt,
    3. c.) 0 bis 70,0 Gew.-% Struktureinheiten der Formel (3)
      Figure imgb0004
    wobei R3, R4, R5 und R6, jeweils unabhängig voneinander Reste mit einem Molekulargewicht im Bereich von 1 bis 500 g/mol sind,
    jeweils bezogen auf das Gesamtgewicht des Polymers (A) enthält, und
  2. B) 0,01 bis 50,0 Gewichtsteilen mindestens einer Hydroxylverbindung (B) der Formel (4)
    Figure imgb0005
     wobei R7 jeweils unabhängig voneinander Wasserstoff oder einen Alkylrest mit 1 bis 6 Kohlenstoffatomen bedeutet, R8 Wasserstoff oder einen Alkylrest mit 1 bis 10 Kohlenstoffatomen darstellt und n eine Zahl größer gleich 2 ist,
  3. C) mit mindestens einer Verbindung (C) der Formel (5) umsetzt,
    Figure imgb0006
     wobei R9 und R10 jeweils unabhängig voneinander Wasserstoff, COOH, eine Alkylgruppe mit 1 bis 10 Kohlenstoffatomen oder eine gegebenenfalls substituierte Arylgruppe mit 6 bis 12 Kohlenstoffatomen sind,
    wobei man pro mol Hydroxylgruppen, die das Polymer (A) und die Hydroxylverbindung (B) in Summe enthalten, 0,0005 bis 0,5 mol der Verbindung (C) einsetzt.
A binder of this type is according to DE 102 29 213.2 from a mixture of:
  1. A) 50.0 to 99.99 parts by weight of at least one polymer (A), which
    1. a.) 1.0 to 99.9% by weight of structural units of the formula (1)
      Figure imgb0002
       where R 1 is hydrogen or methyl,
    2. b.) 0 to 99.0% by weight of structural units of the formula (2)
      Figure imgb0003
       where R 2 is hydrogen or an alkyl radical having 1 to 6 carbon atoms,
    3. c.) 0 to 70.0% by weight of structural units of the formula (3)
      Figure imgb0004
    wherein R 3 , R 4 , R 5 and R 6 are each independently of one another radicals having a molecular weight in the range from 1 to 500 g / mol,
    each based on the total weight of the polymer (A), and
  2. B) 0.01 to 50.0 parts by weight of at least one hydroxyl compound (B) of the formula (4)
    Figure imgb0005
     where R 7 is, independently of one another, hydrogen or an alkyl radical having 1 to 6 carbon atoms, R 8 is hydrogen or an alkyl radical having 1 to 10 carbon atoms and n is a number greater than or equal to 2,
  3. C) is reacted with at least one compound (C) of the formula (5),
    Figure imgb0006
     wherein R 9 and R 10 are each independently of one another hydrogen, COOH, an alkyl group having 1 to 10 carbon atoms or an optionally substituted aryl group having 6 to 12 carbon atoms,
    wherein 0.0005 to 0.5 mol of the compound (C) is used per mole of hydroxyl groups containing the polymer (A) and the hydroxyl compound (B) in total.

Die Weichmacher in diesem Alkohol sind chemisch gebunden, ein Separieren ist nicht möglich.The plasticizers in this alcohol are chemically bound, separation is not possible.

Mit Vorteil wird die Umwandlung des Alkohols in ein wasserunlösliches Acetal mit einer Mineralsäure oder einer organischen Säure durchgeführt. Bevorzugt ist die Umsetzung mit der umweltfreundlichen Glyoxalsäure. Die eingesetzte(n) organische(n) Säure(n) kann (können) neben Kohlenstoff, Wasserstoff und Sauerstoff auch weitere Hetroatome besitzen, insbesondere Schwefel, Stickstoff und Phosphor. Neben Säuregruppen können ebenso Aldehydfunktionen in eingesetzten Verbindungen vorhanden sein. Bevorzugt ist der Einsatz von Oxalsäure.Advantageously, the conversion of the alcohol into a water-insoluble acetal is carried out with a mineral acid or an organic acid. Preference is given to the reaction with the environmentally friendly glyoxylic acid. The organic acid (s) used can (besides) contain carbon, hydrogen and oxygen as well as other hetro- croates, in particular sulfur, nitrogen and phosphorus. In addition to acid groups, aldehyde functions may also be present in compounds employed. Preference is given to the use of oxalic acid.

Die verwendbare Rezeptur könnte bestehen aus: Produkt % Anteil insgesamt Wasser 30 - 70 Oxalsäure 10 - 20 Stabilisator T 1 - 3 eine Farbe 0,2 - 2 Maisstärke 1 - 3 Modifizierte, intern plastifizierte Polyhydroxylverbinung 25 - 50 Formaldehyd 5 - 25 The usable recipe could consist of: product % Share in total water 30 - 70 oxalic acid 10 - 20 Stabilizer T 1 - 3 a color 0,2 - 2 corn starch 1 - 3 Modified, internally plasticized polyhydroxyl compound 25 - 50 formaldehyde 5 - 25

Ein besonderes Ausführungsbeispiel könnte genauer bestehen aus: Produkt % Anteil insgesamt gr Prozentgehalt g - TS Wasser 45,000 108,000 Oxalsäure 14,585 35,000 100,0 35,000 Stabilisator T 1,250 3,000 25,0 0,750 eine Farbe 0,417 1,000 60,0 0,600 Maisstärke 1,250 3,000 100,0 3,000 Mowiflex FXT® 305 29,167 70,000 20,0 14,000 Formaldehyd 8,333 20,000 37,0 7,400 A particular embodiment could more specifically consist of: product % Share in total gr percentage g - TS water 45,000 108000 oxalic acid 14.585 35,000 100.0 35,000 Stabilizer T 1,250 3,000 25.0 0,750 a color 0,417 1,000 60.0 0,600 corn starch 1,250 3,000 100.0 3,000 Mowiflex FXT® 305 29.167 70,000 20.0 14,000 formaldehyde 8.333 20,000 37.0 7,400

Ein Wischtuch dieser Art kann vorzugsweise auf einer Maschinenanlage produziert werden, die besteht aus

  1. a) einer Vlieslegemaschine wie Krempel mit ggf. einer Vliesstrecke für die Polyvinylalkoholfasern
  2. b) einer Vliesverfestigungseinrichtung wie Vernadelungseinrichtung,
  3. c) einer Schaumauftrageinrichtung für das polyhydoxylgruppenhaltige Bindemittel,
  4. d) einem Trockner wie Durchströmtrockner mit ggf. einem vorgeschalteten Infrarottrockenschacht und einer nachgeschalteten Hotflue und
  5. e) ggf. einer Vlies-Aufwickeleinrichtung. Dies deshalb, weil es sinnvoll ist, die Weiterbehandlung mit einer anderen Produktionsgeschwindigkeit durchzuführen. Es würde dann folgen in einer anderen Maschinenstraße eine Abwickeleinrichtung zur erneuten Vorlage zu einer dann folgenden
  6. f) Waschmaschine,
  7. g) einem weiteren Trockner wie Siebtrommeltrockner und letztlich
  8. h) erneut einer Wickel- und/oder Konfektioniereinrichtung.
A wipe of this type can preferably be produced on a machinery that consists of
  1. a) a nonwoven laying machine such as carding with optionally a nonwoven web for the polyvinyl alcohol fibers
  2. b) a web bonding device such as a needling device,
  3. c) a foam applicator for the polyhydric-containing binder,
  4. d) a dryer as Durchströmtrockner with possibly an upstream infrared drying shaft and a downstream Hotflue and
  5. e) if necessary, a nonwoven take-up device. This is because it makes sense to carry out the further processing at a different production speed. It would then follow in another machine line an unwinding device for re-submission to a subsequent
  6. f) washing machine,
  7. g) another dryer such as a screen drum dryer and ultimately
  8. h) again a winding and / or confectioning device.

Claims (12)

  1. Cloth for wet and moist cleaning consisting of a nonwoven made of polyvinyl alcohol fibres which is bonded with a polyvinyl alcohol binder,
    characterised in
    that the cloth consists of pure polyvinyl alcohol fibres which do not shrink at temperatures up to 100°C, which are intermingled with one another to increase the resistance and additionally impregnated with a polyhydroxyl-group-containing binder whose softeners are chemically bound and can no longer be separated after foaming and subsequent polycondensation.
  2. The cloth according to claim 1,
    characterised in
    that the fibres are mechanically intermingled, such as needle-bonded, to bond the nonwoven.
  3. The cloth according to claim 1,
    characterised in
    that the fibres are hydrodynamically intermingled, such as needle-bonded to bond the nonwoven.
  4. A method for producing a fully synthetic cloth according to claim 1,
    characterised in
    that the non-shrinking staple fibres made of polyvinyl alcohol are laid up by means of a card to form a nonwoven, then intermingled such as needle-bonded to increase the resistance of the nonwoven and then merely impregnated with a polyhydroxyl-group-containing binder, whose softener is chemically bound, this binder is released in foam form and the nonwoven is then dried and subjected to polycondensation.
  5. The method according to claim 4,
    characterised in
    that the polyhydroxyl-group-containing binder is prepared from a mixture of:
    A.) 50.0 to 99.99 parts by weight of at least one polymer (A) which contains
    a.) 1.0 to 99.9 wt.% of structural units having the formula (1)
    Figure imgb0012
     where R1 denotes hydrogen or methyl,
    b.) 0 to 99.0 wt.% of structural units having the formula (2)
    Figure imgb0013
     where R2 represents hydrogen or an alkyl group with 1 to 6 carbon atoms,
    c.) 0 to 70.0 wt.% structural units having the formula (3)
    Figure imgb0014
     where R3, R4, R5 and R6 are each, independently of one another, groups having a molecular weight in the range of 1 to 500 g/mol, in each case relative to the total weight of polymer (A),
    and
    B.) 0.01 to 50.0 parts by weight of at least one hydroxyl compound (B) having the formula (4)
    Figure imgb0015
     where R7 denotes, in each case independently of one another, hydrogen or an alkyl group with 1 to 6 carbon atoms, R8 is hydrogen or an alkyl group with 1 to 10 carbon atoms and n is an integer greater than or equal to 2,
    C.) reacted with at least one compound (C) having the formula (5)
    Figure imgb0016
     where R9 and R10, in each case independently of one another, are hydrogen, COOH, an alkyl group with 1 to 10 carbon atoms or an optionally substituted aryl group with 6 to 12 carbon atoms
    wherein 0.0005 to 0.5 mol of compound (C) is used per mol in total of hydroxyl groups containing the polymer (A) and the hydroxyl compound (B).
  6. The method according to claim 4 or 5,
    characterised in
    that a formulation containing a mineral acid and/or a monovalent or polyvalent organic acid which can be aliphatic, aromatic and/or cyclic is used to produce the coating liquor for impregnating the fibre nonwoven.
  7. The method according to claim 6,
    characterised in
    the following formulation is used to acetalise the polyhydroxyl binder: Product Total % fraction Water 30-70 Oxalic acid 10-20 Stabiliser T 1-3 A dye 0.2-2 Maize starch 1-3 Modified internally plasticised polyhydroxyl compound 25-50 Formaldehyde 5-25
  8. The method according to claim 7,
    characterised in
    that the following formulation is used to acetalise the polyhydroxyl-group-containing binder: Product Total % content gr Percentage content g-TS Water 45.000 108.000 Oxalic acid 14.585 35.000 100.0 35.000 Stabiliser T 1.250 3.000 25.0 0.750 A dye 0.417 1.000 50.0 0.600 Maize starch 1.250 3.000 100.0 3.000 Mowiflex FXT ® 305 29.167 70.000 20.0 14.000 Formaldehyde 8.333 20.000 37.0 7.400
  9. A system for producing a cloth for wet and moist cleaning consisting of a nonwoven made of polyvinyl alcohol fibres which is bonded with a polyvinyl alcohol binder, wherein the cloth consists of pure polyvinyl alcohol fibres which do not shrink at temperatures up to 100°C, which are intermingled with one another to increase the resistance and additionally impregnated with a polyhydroxyl-group-containing binder whose softeners are chemically bound and can no longer be separated after foaming and subsequent polycondensation,
    characterised in
    that said system comprises, arranged one after the other
    a) a nonwoven laying machine such as a carding machine optionally with a nonwoven section for the polyvinyl alcohol fibres,
    b) a nonwoven bonding device such as a needle-bonding device,
    c) a foam-application device for the polyhydroxyl-group-containing binder,
    d) a drier such as a rapid-package drier optionally with an upstream infrared drying shaft and a downstream hot flue and
    e) optionally one or two winding devices and following unwinding device in a different train for renewed feeding to a then following
    f) washing machine,
    g) another drier such as a screen drum drier and finally
    h) again to a winding and/or making-up device.
  10. The system according to claim 9,
    characterised in
    that the rapid-package drier according to d) can be heated to temperatures around 80°C.
  11. The system according to claim 9 or 10,
    characterised in
    that the hot flue according to d) is designed for a dwell time of 15 min or more and for a temperature of 80 to 85°C.
  12. The system according to claim 9 to 11,
    characterised in
    that the drier according to g) is designed for temperatures around 100°C and higher.
EP04766205A 2003-07-16 2004-07-13 Synthetic cloth, method and system for the production of said cloth Expired - Lifetime EP1649094B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10332415 2003-07-16
DE10345086A DE10345086A1 (en) 2003-07-16 2003-07-25 Fully synthetic wipe, method and apparatus for making the wipe
PCT/EP2004/051474 WO2005007959A1 (en) 2003-07-16 2004-07-13 Synthetic cloth, method and system for the production of said cloth

Publications (2)

Publication Number Publication Date
EP1649094A1 EP1649094A1 (en) 2006-04-26
EP1649094B1 true EP1649094B1 (en) 2007-09-12

Family

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Application Number Title Priority Date Filing Date
EP04766205A Expired - Lifetime EP1649094B1 (en) 2003-07-16 2004-07-13 Synthetic cloth, method and system for the production of said cloth

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EP (1) EP1649094B1 (en)
AT (1) ATE373130T1 (en)
BR (1) BRPI0412663A (en)
DE (1) DE502004004972D1 (en)
RU (1) RU2006100649A (en)
WO (1) WO2005007959A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11255051B2 (en) 2017-11-29 2022-02-22 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US11313061B2 (en) 2018-07-25 2022-04-26 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens
US11591755B2 (en) 2015-11-03 2023-02-28 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2412705T3 (en) 2007-06-29 2013-07-12 Duroturf International Ab Cleaning Cloth

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JPS5898464A (en) * 1981-12-07 1983-06-11 日本バイリ−ン株式会社 Production of base fabric for chemical lace
JPS61152859A (en) * 1984-12-21 1986-07-11 株式会社クラレ Production of nonwoven fabric suitable for wipers
EP0705354B1 (en) * 1993-06-02 1997-06-11 Minnesota Mining And Manufacturing Company Nonwoven articles and methods of producing same
EP0636716B1 (en) * 1993-07-29 1999-01-20 Kuraray Co., Ltd. Water soluble polyvinyl alcohol-based fiber
US5470653A (en) * 1994-08-05 1995-11-28 Isolyser Company, Inc. Disposable mop heads
DE19620503A1 (en) * 1996-05-22 1997-11-27 Fleissner Maschf Gmbh Co Process for the production of a fleece by hydromechanical needling and product according to this production process
WO2000058539A1 (en) * 1999-03-26 2000-10-05 Isolyser Company, Inc. Spunlaced poly(vinyl alcohol) fabrics
US6420284B1 (en) * 1999-03-26 2002-07-16 Isolyser Company, Inc. Poly (vinyl alcohol) wipes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11591755B2 (en) 2015-11-03 2023-02-28 Kimberly-Clark Worldwide, Inc. Paper tissue with high bulk and low lint
US11255051B2 (en) 2017-11-29 2022-02-22 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US12043963B2 (en) 2017-11-29 2024-07-23 Kimberly-Clark Worldwide, Inc. Fibrous sheet with improved properties
US11313061B2 (en) 2018-07-25 2022-04-26 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens
US11788221B2 (en) 2018-07-25 2023-10-17 Kimberly-Clark Worldwide, Inc. Process for making three-dimensional foam-laid nonwovens

Also Published As

Publication number Publication date
WO2005007959A1 (en) 2005-01-27
EP1649094A1 (en) 2006-04-26
RU2006100649A (en) 2007-08-27
DE502004004972D1 (en) 2007-10-25
BRPI0412663A (en) 2006-09-26
ATE373130T1 (en) 2007-09-15

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