EP0547261B1 - Structure plate enduite - Google Patents

Structure plate enduite Download PDF

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Publication number
EP0547261B1
EP0547261B1 EP91121632A EP91121632A EP0547261B1 EP 0547261 B1 EP0547261 B1 EP 0547261B1 EP 91121632 A EP91121632 A EP 91121632A EP 91121632 A EP91121632 A EP 91121632A EP 0547261 B1 EP0547261 B1 EP 0547261B1
Authority
EP
European Patent Office
Prior art keywords
base layer
flat structure
structure according
coating
carboxylic acid
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
EP91121632A
Other languages
German (de)
English (en)
Other versions
EP0547261A1 (fr
Inventor
Josef Dr. Hefele
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.)
Kufner Textilwerke GmbH
Original Assignee
Kufner Textilwerke 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 Kufner Textilwerke GmbH filed Critical Kufner Textilwerke GmbH
Priority to EP91121632A priority Critical patent/EP0547261B1/fr
Priority to AT91121632T priority patent/ATE127549T1/de
Priority to DE59106435T priority patent/DE59106435D1/de
Priority to ES91121632T priority patent/ES2078418T3/es
Publication of EP0547261A1 publication Critical patent/EP0547261A1/fr
Application granted granted Critical
Publication of EP0547261B1 publication Critical patent/EP0547261B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/042Acrylic polymers
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06MTREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M17/00Producing multi-layer textile fabrics
    • D06M17/04Producing multi-layer textile fabrics by applying synthetic resins as adhesives
    • D06M17/06Polymers of vinyl compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06NWALL, 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
    • D06N3/00Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/0056Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
    • D06N3/0059Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes

Definitions

  • This invention relates to a coated sheet-like structure, comprising a coating carrier, a base or base layer made of a plastic mass applied thereon and a further, second layer provided thereon.
  • This invention further relates to a method for producing such a flat structure and a particularly favorable use for this flat structure.
  • a sheet with a single coating is known from US-A-4 602 057.
  • This single coating consists of copolyamide and 0.3 to 15% by weight of behenic acid.
  • a uniform mixture of behenic acid and copolyamide is produced; This is followed by a temperature treatment above the melting temperature of behenic acid, but below the melting temperature of copolyamide, whereby an even loading is achieved. The required amount of coating can be reduced by this individual coating.
  • Flat structures are also known which are provided with a base layer made of a plastic mass, which is preferably applied in the form of an aqueous paste to the flat structure in the form of a grid.
  • the fabric is then vibrated with a rapidly rotating beater roller.
  • a hot melt adhesive powder is sprinkled on the paste print.
  • the excess powder not adhering to this base layer is blown off and suctioned off, and the paste of the base layer with the powder adhering to it is then dried and sintered.
  • the coating grid which is preferably in the form of a dot, thus consists of a base layer made of this dried and sintered paste.
  • the sintered hot-melt adhesive powder represents the further plastic layer sitting on it.
  • the coated fabrics are laminated in sheets or as blanks with other sheets or cut sheets under the action of pressure and comparatively mild temperature to form composites with particularly high resistance to washing and cleaning.
  • DE-B-22 31 723 describes such flat structures which have two layers lying one above the other.
  • a base layer is used which, after drying and sintering, has a higher melting point and a higher melt viscosity than the hot-melt adhesive layer scattered thereon.
  • Double-layer coatings of this type result in improved adhesion, a softer grip and a reduced tendency to kickback when fixing, so that they are increasingly able to assert themselves over single coatings.
  • copolyamides, copolyesters, low-pressure polyethylenes and polyurethanes are used as plastic masses for the base layer.
  • Copolyamides and copolyesters are particularly suitable as materials for the hot-melt adhesive layer.
  • suspending or dispersing agents are used, which are also used in single coatings, for example combinations of fatty acids, ammonia and water-soluble thickening agents.
  • Suitable dispersants are, for example, in the publications DE-B-20 07 971, DE-B-22 29 308, DE-B-24 07 505, DE-B-25 07 504, EP-A-0 150 262 and DE-B -35 10 109.
  • This invention is therefore based on the object of providing a flat structure of the type mentioned at the outset which does not have the disadvantages listed above.
  • the tendency to penetrate into the carrier should be reduced to the required minimum and, when using hot-melt adhesive powder as the second layer, the tendency to suck should be reduced without the adhesive strength of the base layer to the carrier and the hot-melt adhesive scattering coating to the base layer suffering.
  • the duration of exposure to temperature should ensure, even with the short throughput times customary in coating technology, that the base layer and the hot-melt adhesive sprinkling coating sitting thereon are anchored fully cleanable and washable.
  • a coated sheet which has a coating carrier, a base layer applied thereon and a further layer provided thereon, the base layer which is no longer flowable under the action of temperature being applied in a grid pattern, at least partially crosslinked, and an aliphatic carboxylic acid with a carboxyl group and at least 18 Contains carbon atoms per molecule in an amount of 2 to 10% by weight and optionally salts of divalent or trivalent metals of this carboxylic acid in an amount of 0.1 to 2% by weight, the amounts given relating to the dry weight of the base layer.
  • the at least partial crosslinking should extend to such an extent that the base layer does not flow at all temperatures to which the coated fabric is exposed in later laminations with other fabrics.
  • this aliphatic carboxylic acid in a Amount of preferably 2 to 8 wt.%, Particularly preferably 4 to 7 wt.%, Based on the dry substance, is contained.
  • Behenic acid or oxystearic acid is preferably used as the carboxylic acid.
  • wax acids for example oxidized montan wax, which contains about 60% higher fatty acids, and other fatty acids with at least 18 carbon atoms per molecule can also be used.
  • Calcium, magnesium, zinc or aluminum salts can be used as salts of the carboxylic acid in the stated amount. This makes it possible to further reduce penetration.
  • the base layer can be produced from a crosslinkable, aqueous polymer dispersion, emulsion and / or solution which is thickened.
  • the polymers used preferably have a film-forming temperature of at least 5 ° C. and are usually acidic in dispersion or emulsion form.
  • Carboxylic acids can be used which, in addition to alkyl and carboxyl groups, also have other foreign groups in the molecule.
  • a crosslinking catalyst for example ammonium tetrafluoroborate.
  • Such a crosslinking catalyst is preferably used in an amount of 0.2 to 2.0% by weight, based on the dry weight of the base layer.
  • the pH of the ready-to-use aqueous dispersion paste mixed with thickeners should be adjusted to 5.0 to 8.0, preferably 6.0 to 7.0.
  • the amount of the polyurethane dispersion is between 2 and 40% by weight, based on the dry weight of the base layer.
  • Other, also suitable, self-crosslinking polymers that can be added are self-crosslinking polyvinyl esters, which are also present in dispersion form.
  • Self-crosslinking copolymers e.g. Styrene-acrylic or acrylic-vinyl ester copolymers can be used in dispersion form.
  • Rapidly crosslinking acrylic polymers with film formation temperatures above about 5 ° C. have proven to be particularly suitable, which allow a rapid coating speed in the presence of the carboxylic acids used according to the invention and the catalyst present, if any, and which already crosslink with cleaning and washing resistance with a short drying and condensation time.
  • a self-crosslinking polymer dispersion paste the previously was foamed.
  • an ionogenic surfactant can be added to the paste in an amount of 0.1 to 1% by weight, preferably about 0.5% by weight.
  • a foam stabilizer based on a fatty acid alkanolamide can be added. It is preferably foamed up to 2 to 3 times the volume.
  • the second layer which is applied to this base layer, can either consist of hot-melt adhesive powder or of flock fibers. If this second layer is made from hot-melt adhesive powder, which can be charged with a crosslinking catalyst for the base layer, for example with oxalic acid or maleic acid, the sheet-like structure coated in this way is preferably suitable as a fixable interlining material, in particular for the clothing industry, for example as blouse or shirt inserts.
  • the catalyst treatment of the hot-melt adhesive powder further accelerates the crosslinking of the base layer.
  • base layers of the type according to the invention which are sprinkled with hot-melt adhesive powder, there is little imprint penetrating through the flat structure, which produce a soft feel and, above all, provide excellent adhesion, since the scattered powder is only anchored on the contact surface with the base layer and has no tendency to absorb and wrap around the moist base layer.
  • carboxylic acid additive By using the carboxylic acid additive, the cleaning and washing resistance is not adversely affected.
  • the base paste applied to the coating substrate goes under Admixing a thickened, preferably ammonia-alkaline aqueous dispersion, which is described above, into the ammonia or ammonium salt-free dry state.
  • the carboxylic acid is free of ammonium salts.
  • hot-melt adhesive powder to the base layer, preferably in an amount of 2 to 50% by weight, based on the dry weight of the base layer.
  • copolyamide, copolyester or also low-pressure polyethylene powder can be added to the base layer in the stated amount.
  • the mixture of the polymer dispersion is first additionally thickened before application to the coating carrier, this thickening should be relatively strong, so that the base paste largely loses its flow properties.
  • the viscosity of the resulting base paste is, for example, in the range from 15000 to 35000 cP at 20 ° C. (SVI HAAKE viscometer VT 23) and 5.8 revolutions / min.
  • Suitable thickeners are, for example, ammonium salts of polyacrylic acids, carboxymethyl cellulose, hydroxyethyl cellulose, cellulose ethers, starch ethers, alginates, polygalacton mannan (ether).
  • a highly disperse silica can also be used as a thickener.
  • the carrier material on which the base layer and the second layer are applied can be any flat structure from the textile sector, for example a woven fabric, knitted fabric, non-woven fabric, woven fabric, knitted non-woven fabric, woven knitted fabric, plastic film, foam, synthetic leather or similar materials.
  • Such carriers preferably have a weight in the range of 20 to 120 g / m2.
  • the base layer is first prepared, which in addition to the polymer dispersion contains a carboxylic acid with a carboxyl group and at least 18 carbon atoms in the molecule, and which can optionally contain salts of divalent or trivalent metals of this carboxylic acid.
  • an aqueous, thickened coating paste is produced, which is then applied to the coating carrier by means of a grid-shaped coating.
  • the coating weight of the base layer is in the range of about 1 to 20 g / m2, preferably 2 to 8 g / m2.
  • the further, second layer is applied, which can consist, for example, of the hot-melt adhesive powder already mentioned.
  • Copolyamide powder or copolyester powder are particularly suitable as hot-melt adhesive powder.
  • flock fibers can also be applied to the base layer.
  • Such flock fibers preferably consist of cellulose, cotton or synthetic fibers, which have a cutting length of 0.5 to about 5 mm.
  • a self-crosslinking, aqueous polyacrylate dispersion having a solids content of 45 to 60% by weight and a pH of 2.5 to 3.5, mixed about 200% by weight, is used in the production of the sheet-like structure according to the invention with a grid-like coating.
  • Polyacrylic acid ammonium is used as a thickening agent in an amount of 0.8 to 1.0% by weight.
  • about 0.2 to 2.0% by weight of ammonium tetrafluoroborate, from which an approximately 10% aqueous solution has previously been prepared, are added.
  • the viscosity of the base paste is in the range of approximately 15000 to 35000 cP at 20 ° C. (SVI measuring device, HAAKE viscometer VT 23) and 5.8 revolutions / min.
  • the base paste is applied to a fine textile carrier web using a sieve template with a number of holes of 50 to 120 / cm2, then, if necessary, crosslinking catalyst for the base layer is applied to hot-melt adhesive powder with a melting point of approximately 95 to 125 ° C. and with a grain size of approximately 80 to 160 ⁇ m scattered in excess.
  • a subsequent beater roller vibrates the carrier and ensures an even distribution of the scattered powder.
  • the excess of hot-melt adhesive powder is then removed by blowing and suction. Drying, sintering and condensation take place at 160 to 190 ° C in a time of 10 to 30 s.
  • fiber cut flakes can be connected to the base layer for other purposes.
  • the flock fibers made of cellulose, cotton or synthetic fibers with a cutting length of 0.5 to approx. 5 mm are advantageously shot onto the base layer in an electrostatic field.
  • the drying and wash-resistant anchoring of the cut flock fibers can take place under the conditions of Examples 1 to 4.
  • the grid-like imprint of the base layer also gives a very soft feel.
  • a paste for the base layer with a dry application weight of 25 g / m2 is pressed onto a closed textile carrier in a 25 mesh grid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacturing Of Multi-Layer Textile Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Laminated Bodies (AREA)
  • Details Of Garments (AREA)

Claims (18)

  1. Structure plane enduite, comprenant un support d'enduction, une couche de base appliquée sur celui-ci et une autre couche déposée sur celle-ci, caractérisée en ce que la couche de base non fluente est appliquée sous la forme d'un réseau, est réticulée au moins partiellement et contient un acide carboxylique aliphatique ayant un groupe carboxyle et au moins 18 atomes de carbone par molécule dans une quantité de 2 à 10 % en poids et le cas échéant, ses sels de métaux diou trivalents dans une quantité de 0,1 à 2 % en poids, les indications de quantités se rapportant au poids sec de la couche de base.
  2. Structure plane selon la revendication 1, caractérisée en ce que l'acide carboxylique est l'acide béhénique ou l'acide oxystéarique.
  3. Structure plane selon les revendications 1 ou 2, caractérisée en ce que le sel de l'acide carboxylique est un sel de calcium, de magnésium, de zinc ou d'aluminium.
  4. Structure plane selon l'une des revendications 1 à 3, caractérisée en ce que la couche de base est préparée avec une dispersion, une émulsion et/ou une solution aqueuse de polymère réticulable.
  5. Structure plane selon la revendication 4, caractérisée en ce que le polymère présente une température de formation de film d'au moins 5°C.
  6. Structure plane selon les revendications 4 ou 5, caractérisée en ce que le polymère est un polyacrylate auto-réticulable.
  7. Structure plane selon l'une des revendications 4 à 6, caractérisée en ce que la dispersion de polymère contient en outre un agent réticulant de carbamide, de mélamine, de semi-réactif ou de réactif avec =N-CH₂OH ou =N-CH₂OR, où R désigne un groupe alkyle.
  8. Structure plane selon l'une des revendications 4 à 7, caractérisée en ce que la dispersion de polyacrylate contient en outre une dispersion de polyuréthane dans une quantité de 2 à 40 % en poids par rapport au poids sec de la couche de base.
  9. Structure plane selon l'une des revendications 1 à 8, caractérisée en ce que la couche de base contient en outre un adhésif fusible à base de copolyamides, de copolyesters ou de polyéthylène basse pression dans une quantité de 2 à 50 % en poids par rapport au poids sec de la couche de base.
  10. Structure plane selon l'une des revendications 1 à 9, caractérisée en ce que la couche de base contient lors de l'impression du tétrafluoroborate d'ammonium comme catalyseur de réticulation dans une quantité de 0,2 à 2,0 % en poids par rapport au poids sec de la couche de base.
  11. Structure plane selon l'une des revendications 1 à 10, caractérisée en ce que la couche de base est expansée avant l'impression.
  12. Structure plane selon l'une des revendications 1 à 11, caractérisée en ce que la couche supplémentaire est constituée d'une poudre d'adhésif fusible de copolyamides ou de copolyesters.
  13. Structure plane selon la revendication 12, caractérisée en ce que la couche supplémentaire se compose d'une poudre d'adhésif fusible qui est additionnée de catalyseurs de réticulation pour la couche de base.
  14. Structure plane selon l'une des revendications 1 à 11, caractérisée en ce que la couche supplémentaire est constituée de flocs de cellulose, de coton, ou de fibres synthétiques.
  15. Procédé de préparation d'une structure plane selon l'une des revendications 1 à 14, dans laquelle, sur une couche de base appliquée sous forme de réseau, qui contient un acide carboxylique ayant un groupe carboxyle et au moins 18 atomes de carbone dans sa molécule et le cas échéant un sel de métaux di- ou trivalent de celui-ci, on a appliqué une couche supplémentaire, l'excès de la couche supplémentaire n'adhérant pas à l'impression étant éliminé par soufflage et aspiration, et en ce qu'on sèche, fritte et condense ensuite le support ainsi enduit.
  16. Procédé selon la revendication 15, caractérisé en ce que la couche de base est préparée à partir d'une dispersion de polymère auto-réticulable ayant un pH de 5,0 à 8 qui contient 2 à 10 % en poids de l'acide carboxylique et le cas échéant 0,2 à 2,0 % en poids de tétrafluoroborate d'ammonium.
  17. Procédé selon les revendications 15 ou 16, caractérisé en ce qu'on applique la couche de base sur le support par enduction d'un réseau de points.
  18. Utilisation d'une structure plane selon l'une des revendications 1 à 14, comme doublure fixable pour des pièces de vêtements, en particulier celles constituées d'étoffes fines et légères telles que les corsages et les chemises.
EP91121632A 1991-12-17 1991-12-17 Structure plate enduite Expired - Lifetime EP0547261B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP91121632A EP0547261B1 (fr) 1991-12-17 1991-12-17 Structure plate enduite
AT91121632T ATE127549T1 (de) 1991-12-17 1991-12-17 Beschichtetes flächengebilde.
DE59106435T DE59106435D1 (de) 1991-12-17 1991-12-17 Beschichtetes Flächengebilde.
ES91121632T ES2078418T3 (es) 1991-12-17 1991-12-17 Estampado superficial revestido.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91121632A EP0547261B1 (fr) 1991-12-17 1991-12-17 Structure plate enduite

Publications (2)

Publication Number Publication Date
EP0547261A1 EP0547261A1 (fr) 1993-06-23
EP0547261B1 true EP0547261B1 (fr) 1995-09-06

Family

ID=8207443

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91121632A Expired - Lifetime EP0547261B1 (fr) 1991-12-17 1991-12-17 Structure plate enduite

Country Status (4)

Country Link
EP (1) EP0547261B1 (fr)
AT (1) ATE127549T1 (fr)
DE (1) DE59106435D1 (fr)
ES (1) ES2078418T3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002022965A (ja) * 2000-07-07 2002-01-23 Ohtsu Tire & Rubber Co Ltd :The 導光板ユニット及びバックライト
DE50302798D1 (de) * 2003-12-12 2006-05-18 Boehme Chem Fab Kg Verwendung schutzkolloidstabilisierter Polymere für Doppelpunktbeschichtungen
DE102015005089A1 (de) * 2015-04-22 2016-10-27 Carl Freudenberg Kg Thermisch fixierbares Flächengebilde

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB771121A (en) * 1954-04-29 1957-03-27 Dunlop Rubber Co Treatment of articles composed of polyvinyl compositions
DE2302893A1 (de) * 1973-01-22 1974-08-01 North & Sons Ltd James Undurchlaessiges textilmaterial und verfahren zu dessen herstellung
US4107120A (en) * 1976-06-17 1978-08-15 Rohm And Haas Company Heteropolymer acrylic latices and textiles treated therewith
US4265962A (en) * 1976-12-20 1981-05-05 Burlington Industries, Inc. Low penetration coating fabric
DE3336417A1 (de) * 1983-10-06 1985-04-18 Kufner Textilwerke GmbH, 8000 München Heissiegelkleber zum beschichten von flaechengebilden, insbesondere von einlagestoffen, und verfahren zu seiner herstellung
US4863788A (en) * 1988-02-16 1989-09-05 Micropore Waterproof breathable microporous membrane with cellular foam adhesive

Also Published As

Publication number Publication date
ES2078418T3 (es) 1995-12-16
DE59106435D1 (de) 1995-10-12
EP0547261A1 (fr) 1993-06-23
ATE127549T1 (de) 1995-09-15

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