US20020114925A1 - Coated, flexible flat material - Google Patents
Coated, flexible flat material Download PDFInfo
- Publication number
- US20020114925A1 US20020114925A1 US09/925,661 US92566101A US2002114925A1 US 20020114925 A1 US20020114925 A1 US 20020114925A1 US 92566101 A US92566101 A US 92566101A US 2002114925 A1 US2002114925 A1 US 2002114925A1
- Authority
- US
- United States
- Prior art keywords
- coating
- coated
- flat material
- textile
- flat
- 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.)
- Abandoned
Links
- 239000000463 material Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 claims abstract description 40
- 239000004753 textile Substances 0.000 claims abstract description 29
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 239000007858 starting material Substances 0.000 claims abstract description 5
- 239000004814 polyurethane Substances 0.000 claims description 25
- 238000000576 coating method Methods 0.000 claims description 23
- 229920002635 polyurethane Polymers 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 20
- 239000006185 dispersion Substances 0.000 claims description 20
- 230000015271 coagulation Effects 0.000 claims description 12
- 238000005345 coagulation Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004049 embossing Methods 0.000 claims description 10
- 238000004043 dyeing Methods 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 239000000758 substrate Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000009472 formulation Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000000975 dye Substances 0.000 description 6
- 239000008199 coating composition Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 239000000980 acid dye Substances 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 239000000434 metal complex dye Substances 0.000 description 4
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229920003009 polyurethane dispersion Polymers 0.000 description 3
- 229920001410 Microfiber Polymers 0.000 description 2
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000987 azo dye Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000000986 disperse dye Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000842962 Apoda limacodes Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- KMGARVOVYXNAOF-UHFFFAOYSA-N benzpiperylone Chemical compound C1CN(C)CCC1N1C(=O)C(CC=2C=CC=CC=2)=C(C=2C=CC=CC=2)N1 KMGARVOVYXNAOF-UHFFFAOYSA-N 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 150000004985 diamines Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000004032 porphyrins Chemical class 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003655 tactile properties Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000001003 triarylmethane dye Substances 0.000 description 1
- 238000004048 vat dyeing Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0025—Rubber threads; Elastomeric fibres; Stretchable, bulked or crimped fibres; Retractable, crimpable fibres; Shrinking or stretching of fibres during manufacture; Obliquely threaded fabrics
- D06N3/0031—Retractable fibres; Shrinking of fibres during manufacture
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/145—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes two or more layers of polyurethanes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
- Y10T428/24438—Artificial wood or leather grain surface
Abstract
This invention relates to grained, textile flat materials coated with PU systems and to a process for the production thereof and to the use of such flat materials as a decorative starting material.
Description
- This invention relates to grained, textile flat materials coated with polyurethane (PU) compositions and to a process for the production thereof and to decorative starting materials comprising such flat materials.
- It has long been known to produce coated textile flat materials, for example for the production of artificial leather. The coating composition is applied onto the substrate in single or multiple layers in the direct coating process or using the transfer process. The coated textile flat materials may be used, for example, for the production of outer clothing, material for shoe uppers and linings, material for purses and similar articles, material for upholstery and for automotive interior trim.
- The following processes are known to the person skilled in the art for the production of a grain or embossed pattern on coated textiles or other flat materials, all of which processes, however, are associated with disadvantages:
- A predetermined pattern is embossed onto a coated support material by the action of heat and pressure on embossing calendars, embossing plates or also transfer papers. This embossing creates a grain which, however, gives rise to unwanted hardening as a result of the localized compaction. This relatively elaborate process is only performed using thermoplastic PU solutions, which sometimes still contain solvent residues which are vaporized by the action of heat.
- Uncontrolled grain patterns may be achieved by treating materials which have been coated using two component PU solutions, if these materials are treated for a certain time using temperatures of for example 20 to 100° C. in an axial centrifugal dryer with an alternating direction of running (for example DE-A 1 760 260). Disadvantages of this process are not only the use of organic solvents, but also the necessity of precise timing of the process steps, which means that the grain must be formed before the system has actually crosslinked.
- In the reversal process, embossed surfaces are produced by using grained release materials, in particular release papers or silicone molds. The embossed patterns produced with release papers are, however, relatively flat and must be predetermined as early as during the actual coating operation. Using silicone molds is highly cost-intensive and only acceptable for special effects.
- An object of the present invention was to provide a process for the production of a deep grain profile on textile flat materials, which process does not exhibit the above-stated disadvantages, and thereby to obtain high quality products by a simple process.
- It has surprisingly been found that coated flat materials comprising a grain are obtained if textile flat materials having residual shrinkage are first coated by the direct or reversal process with PU dispersions or solutions and are then subjected to heat treatment.
- The invention relates to a process for the production of grained flat materials comprising coating a textile flat material, which has residual shrinkage, with a polyurethane (PU) dispersion or solution and then post-treating the textile flat material under the influence of heat.
- The invention also relates to a grained, coated textile flat material obtained by using the process according to the invention.
- Textile flat materials for the purposes of the present invention include, for example, woven and knitted fabrics, bonded and unbonded nonwovens and microfibre nonwovens. These may be made from synthetic, natural fibres and/or blends thereof. In principle, in addition to textiles, any other flexible flat materials are suitable for the process according to the invention, provided that they have residual shrinkage.
- In textile materials consisting of fibre blends containing polyester fibres, residual shrinkage may be increased by splitting, as this reduces the content of polyester fibres and thus the harder fraction of the woven fabric.
- It has proved advantageous in order to form a very deep grain profile to fill and stabilize the textile flat materials by means of PU coagulation before coating with polyurethane. Accordingly, this is a preferred embodiment of the present invention.
- Reactive or post-crosslinking PU dispersions, as are for example described in WO 00/34352, are in particular suitable for pretreating the flat materials by coagulation. In this case, the PU dispersion, consisting of blocked isocyanate groups and at least one polyamine, is precipitated by thermal treatment to form a stable, partially crosslinked polyurethane or gel.
- Coagulation is particularly suitable for producing films, for coating the most varied materials and for partially or completely impregnating nonwovens, knitted fabrics or other flat materials for the purpose of stabilization.
- The reactive, post-crosslinkable PU dispersions are applied, for example, by flooding, spraying, dipping, spray application, slop-padding, with a doctor knife or roll or by padding, wherein the dispersions may be used in liquid or foamed form.
- Once the coating has been applied, it is generally coagulated by dipping in water at a temperature of 50° C. to 120° C., preferably of 75° C. to 98° C. or with hot steam or in an oven by means of radiant heat or high frequency dryers. It is then usually dried at 60° C. to 180° C., preferably at 10° C. to 140° C. and condensation is performed at 140° C. to 165° C.
- The flat materials are held in a stenter frame during crosslinking and drying in order to avoid premature shrinkage of the flat material.
- The resultant coagulate is so resistant, that the precipitation operation after the application can be performed even in the saponification and splitting bath (3% NaOH). In the case of, for example, microfibre nonwovens containing polyester, the polyester content may simultaneously be saponified and dissolved out in that bath. This results in particularly soft flat materials with a pleasant handle.
- The coated or filled flat materials may also subsequently be sanded and, in this case, are particularly soft. Mechanical treatment in a tumbling machine also increases softness.
- It is also possible to precede the process according to the invention with other aqueous coagulation processes for stabilization, for example electrolyte or thermal coagulation of dispersions.
- Electrolyte coagulation proceeds by immersing the coated substrate into a concentrated salt solution or into water combined with acid or the like, wherein the binder coagulates due to the elevated electrolyte content.
- In thermal coagulation, non-post-crosslinkable binders with a heat-sensitive formulation are able to coagulate due to an increase in temperature.
- The precleaned and optionally stabilized textile flat materials are then coated in known manner with the polyurethane systems by the direct or reversal process.
- Coating compositions suitable for the process according to the invention are, for example, both single component and two-component polyurethane systems known in the textiles and leather industry which consist of isocyanate prepolymers and crosslinking agents. They are commercially available as solutions.
- The aqueous single component polyurethane dispersions described in DE-A 4 236 569, which additionally contain hydrophilic structures, are suitable coating compositions for the process according to the invention.
- Solvent-free, two-component polyurethane systems consisting of a blocked isocyanate prepolymer and polyamine, which are described for example in EP-A 0 784 097, are particularly suitable. These systems have good wet adhesion and excellent water-resistance. Mixtures of various PU systems are also suitable.
- Coating compositions based on PU dispersions, described for example in DE-A 42 36 569, are suitable for the purpose of increasing the wearability of the coated flat materials, as the coatings produced with these PU dispersions are permeable to water vapour.
- In the direct process, the PU coatings are applied onto the substrate by direct spreading using doctor knives, rolls or doctor wires.
- As a rule, two or more, but preferably two, coats are applied in succession, such that the total thickness of the coating comprising base and topcoat layer(s) is 10 to 100 μm, preferably 20 to 60 μm. A paste which dries to yield a microporous layer, as described in DE-A 2 020 153, may also be used as the base coat. The subsequently applied topcoat protects the overall structure from mechanical stresses and abrasion.
- The coating structure comprising base coat and topcoat may, however, also be applied by the so-called reversal process.
- The reversal process is advantageous when highly flexible substrates, such as knitted fabrics, nonwovens or other non-continuous flat materials, are used.
- In this case, the topcoat is initially applied by doctor knife onto a grained or also ungrained transfer paper and dried. A preferably foamed intermediate coat is then optionally applied. After application of a second base or adhesion coat, the substrate is gently pressed into the still wet layer. After drying, a solid composite comprising coating and substrate is obtained, which is removed from the release support and the structure of which largely corresponds to that of the above-described direct coating. After crosslinking, a coated and, depending upon the transfer paper, optionally superficially grained article is obtained.
- Once dry, the coated flat material may be stored in this form and subsequently subjected to a post-treatment, during which the desired grain and colour may be imparted to the article.
- A grain pattern may be achieved by simply pre-embossing the flat material coated according to the invention, as, under the action of heat in the post-treatment, a matching, but substantially deeper grain forms in the indentations arising from the pre-embossing. Without this pre-embossing, post-treatment yields a somewhat randomly grained product.
- The flat materials coated by the direct process may optionally be subjected to a gentle pre-embossing by means of embossing or goffering calenders.
- In the case of the reversal process, pre-embossing to form the grain may be produced by a grained transfer paper. When untextured release papers or simple dull-finish calendars are used, a random grain is obtained on post-treatment.
- Post-treatment of the coated textile flat materials comprises a subsequent dyeing process or a tensionless treatment with boiling water. In the case of treatment with hot water, it is also possible to add suitable pigments directly to the coating compositions.
- The coating and support material are coloured using acid dyes, disperse dyes or metal complex dyes depending upon the composition of the base material. Low-tension dyeing processes with a long liquor ratio, as is for example possible with reel vat dyeing, are particularly suitable. Metal complex dyes applied direct or also as a lacquer formulation yield the best wet fastness values of the PU coating.
- Once the dyeing process is complete, neutralization is optionally performed and then thorough rinsing is carried out. Softeners to improve tactile properties may be applied through additives in the final rinsing baths, before the material is dried under low tension. When support materials containing cellulose are used, tumbling machine treatment to eliminate any possible wet rigidity is advisable.
- The flat materials according to the invention may be used as a decorative starting material, for example as an outer clothing material, material for shoe uppers and linings, material for purses and similar articles, material for upholstery and for automotive interior trim.
- I. Pretreatment of Cleaned Textile Flat Material:
- Stabilization by aqueous coagulation with a reactive dispersion.
Formulation: 90-180 parts by weight of Impranil ® VP LS 2333 (butanoeoxime blocked MDI prepolymer) (Bayer AG, Leverkusen) 1-2.7 parts by weight of Imprafix ® VP LS 2330/ isopropanol (1:1) (diamine cross- linking agent) (Bayer AG, Leverkusen) 910-820 parts by weight of deionized water. - The solids content of the dispersion formulation was 4 to 8%.
- The textile flat article was padded with the dispersion formulation (100% liquor absorption) and then coagulated in a steamer at 98° C.
- Complete crosslinking and drying was performed on a stenter frame at 165° C.
- Sometimes the nonwoven, for example, polyester and polyamide fiber blends, used were treated with splitting during or after completion of coagulation in order to achieve a softer product handle. To this end, the nonwoven was treated, for example, for approx. 1 hour in 3% sodium hydroxide solution at boiling point, wherein the polyester content was dissolved out.
- Prior sanding of the substrate surface enhanced the effect.
- Stabilization by coagulation with a conventional dispersion.
Formulation: 200 parts by weight of Impranil ® DLV dispersion (aqueous polyurethane dispersion) (Bayer AG, Leverkusen) 4 parts by weight of Koagulant ® WS (20%) (Bayer AG, Leverkusen) 16 parts by weight of aqueous sodium chloride solution (10%) 4 parts by weight of Euderm ® Driver DE (Bayer AG, Leverkusen) 2 parts by weight of Bayderm ® Fix CIN (Bayer AG, Leverkusen) 774 parts by weight of water. - The textile was padded with the dispersion formulation (100% liquor absorption) and then dried on a stenter frame.
- Splitting of a polyester/polyamide nonwoven could be performed in a similar manner to Example 1.
- When coagulation to stabilize the textile flat material was not performed, the cleaned, scalded textile was dried on a stenter frame.
Topcoat: 650 parts by weight of Impranil ® DLN dispersion (aqueous polyester-polyurethane dispersion) (Bayer AG, Leverkusen) 350 parts by weight of Impranil ® DLF dispersion (Bayer AG, Leverkusen) thickened with Mirox ® AM (Stockhausen, Krefeld) in the presence of ammonia. Intermediate coat: 500 parts by weight of Impranil ® DLN dispersion (polyurethane mixture) (Bayer AG, Leverkusen) 500 parts by weight of Impranil ® VP LS 2333 (Bayer AG, Leverkusen) 7.5 parts by weight of Imprafix ® VP LS (Bayer AG, Leverkusen)/isopropanol (1:1) 20 parts by weight of Stockal ® STA (Stockhausen, Krefeld) 30 parts by weight of Stockal ® SR (Stockhausen, Krefeld) are mechanically foamed to 500 g/L and thick- ened with Mirox ® AM (Stockhausen, Krefeld) in the presence of ammonia. Adhesion coat: 1000 parts by weight of Impranil ® VP LS 2333 (Bayer AG, Leverkusen) 15 parts by weight of Imprafix ® VP LS 2330 (Bayer AG, Leverkusen)/isopropanol (1:1) are thickened with Mirox ® AM (Stockhausen, Krefeld) in the presence of ammonia. - Coating was performed by both the direct and reversal process.
- When reversal coating was performed using an embossed transfer paper, the grain of the coating was sometimes structurally predetermined and deepened or enhanced by the post-treatment.
- When a smooth transfer paper was selected, the grain obtained by post-treatment was random, as it was also in the case of direct coating.
- III. Post-Treatment of the Coated Textile Flat Material
- In case the coated textile was post-treated only with hot water, suitable pigments were added directly to the coating paste.
- Polyurethane was generally dyed with metal complex dyes (for example complexing azo dyes, porphyrins or phthalocyanines) and selected acid and disperse dyes (for example azo, triarylmethane or anthraquinone dyes). In the case of tone-in-tone dyeing with the substrate, depending upon the dyeing process and substrate, these dyes were also be combined with other classes of dye.
- The following details constitute one option for simple dyeing, for example on the reel:
-
- When dyeing was performed with acid dyes, the pH value was adjusted to 5 with acetic acid.
- Neutralisation was then performed with sodium hydroxide solution, the fabric was rinsed with deionized water and then dried without tension, for example on a festoon dryer.
- Although the invention has been described in detail in the foregoing for the purpose of illustration, it is to be understood that such detail is solely for that purpose and that variations can be made therein by those skilled in the art without departing from the spirit and scope of the invention except as it may be limited by the claims.
Claims (8)
1. A process for the production of grained flat materials comprising coating a textile flat material, which has residual shrinkage, with a polyurethane (PU) dispersion or solution and then post-treating the textile flat material under the influence of heat.
2. The process of claim 1 wherein the textile flat material is coating step comprises the direct process or the reversal process.
3. The process of claim 1 further comprising, prior to PU coating, stabilizing the textile flat material by aqueous coagulation with a reactive and post-crosslinkable PU dispersion.
4. The process of claim 1 further comprising, after PU coating, pre-embossing the textile flat material.
5. The process of claim 1 wherein post-treating comprises dyeing or treating the flat material tensionless with hot water.
6. A grained, coated flat material obtained by the process of claim 1 .
7. A decorative starting material containing a grained, coated flat material obtained by the process of claim 1 .
8. The decorative starting material of claim 7 , wherein the material is selected from the group of outer clothing material, material for shoe uppers, material for shoe linings, material for purses and similar articles, material for upholstery and material for automotive interior trim.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10039249A DE10039249A1 (en) | 2000-08-11 | 2000-08-11 | Coated, flexible fabrics |
DE10039249.0 | 2000-08-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20020114925A1 true US20020114925A1 (en) | 2002-08-22 |
Family
ID=7652102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/925,661 Abandoned US20020114925A1 (en) | 2000-08-11 | 2001-08-09 | Coated, flexible flat material |
Country Status (15)
Country | Link |
---|---|
US (1) | US20020114925A1 (en) |
EP (1) | EP1311720A1 (en) |
JP (1) | JP2004506817A (en) |
KR (1) | KR20030029817A (en) |
CN (1) | CN1446281A (en) |
AU (1) | AU2001279791A1 (en) |
BR (1) | BR0113172A (en) |
CA (1) | CA2418841A1 (en) |
CZ (1) | CZ2003404A3 (en) |
DE (1) | DE10039249A1 (en) |
HU (1) | HUP0303752A2 (en) |
IL (1) | IL154145A0 (en) |
MX (1) | MXPA03001244A (en) |
PL (1) | PL359851A1 (en) |
WO (1) | WO2002014596A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040194349A1 (en) * | 2003-04-04 | 2004-10-07 | Delgatty Grant Verdun | Shoe with removable vamp |
US20050035626A1 (en) * | 2003-07-24 | 2005-02-17 | Dunaway James Hubert | Recreational vehicle roofing coating |
CN102409553A (en) * | 2011-09-16 | 2012-04-11 | 东台市富安合成材料有限公司 | Method for preparing solvent-free vehicle interior leather based on in-situ polymerization |
WO2020209717A1 (en) * | 2019-04-09 | 2020-10-15 | Stahl International B.V. | Method for upgrading and embossing leather |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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DE10330099A1 (en) * | 2003-07-03 | 2005-01-27 | Benecke-Kaliko Ag | Composite material with plastic composite matrix, process for their preparation and their use |
DE102007013163B4 (en) | 2007-03-20 | 2013-04-04 | Benecke-Kaliko Ag | Process for the production of multilayer plastic films |
CN101798763B (en) * | 2009-12-21 | 2014-01-22 | 厦门泓信超细纤维材料有限公司 | Superfine fiber polyurethane synthesis leather and preparation method thereof |
CN101798764B (en) * | 2009-12-21 | 2012-10-10 | 厦门泓信超细纤维材料有限公司 | Dyeing method of artificial leather |
CN102505529A (en) * | 2011-10-13 | 2012-06-20 | 上海华峰超纤材料股份有限公司 | Method for manufacturing embossed and dyed ultrafine fiber synthetic leather |
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BE463530A (en) * | 1944-06-19 | 1947-02-28 | ||
FR1266408A (en) * | 1959-09-03 | 1961-07-07 | Weinsheim Gmbh Chem Werke | Process for the manufacture of materials, preferably fibrous materials, provided with layers of synthetic material |
US3837983A (en) * | 1969-02-20 | 1974-09-24 | Koracorp Ind Inc | Simulated leather fabric |
JPS4985204A (en) * | 1972-12-20 | 1974-08-15 | ||
US4053669A (en) * | 1974-04-11 | 1977-10-11 | Pandel-Bradford, Inc. | Imitation sheet material with surface grain appearance |
JPS6021980A (en) * | 1983-07-12 | 1985-02-04 | Toray Ind Inc | Composite material |
JP2592452B2 (en) * | 1987-05-29 | 1997-03-19 | 旭化成工業株式会社 | Moldable nonwoven sheet having three-dimensional texture and method for producing the same |
JP2941821B2 (en) * | 1988-11-07 | 1999-08-30 | アキレス株式会社 | Manufacturing method of synthetic leather |
JPH093783A (en) * | 1995-06-20 | 1997-01-07 | Daiyu Shoji:Kk | Grained synthetic leather having excellent steric surface appearance and its production |
-
2000
- 2000-08-11 DE DE10039249A patent/DE10039249A1/en not_active Withdrawn
-
2001
- 2001-07-30 PL PL35985101A patent/PL359851A1/en not_active Application Discontinuation
- 2001-07-30 IL IL15414501A patent/IL154145A0/en unknown
- 2001-07-30 HU HU0303752A patent/HUP0303752A2/en unknown
- 2001-07-30 BR BR0113172-9A patent/BR0113172A/en not_active Application Discontinuation
- 2001-07-30 MX MXPA03001244A patent/MXPA03001244A/en not_active Application Discontinuation
- 2001-07-30 CZ CZ2003404A patent/CZ2003404A3/en unknown
- 2001-07-30 JP JP2002519715A patent/JP2004506817A/en active Pending
- 2001-07-30 KR KR10-2003-7001906A patent/KR20030029817A/en not_active Application Discontinuation
- 2001-07-30 CN CN01814011A patent/CN1446281A/en active Pending
- 2001-07-30 AU AU2001279791A patent/AU2001279791A1/en not_active Abandoned
- 2001-07-30 WO PCT/EP2001/008790 patent/WO2002014596A1/en not_active Application Discontinuation
- 2001-07-30 EP EP01958034A patent/EP1311720A1/en not_active Withdrawn
- 2001-07-30 CA CA002418841A patent/CA2418841A1/en not_active Abandoned
- 2001-08-09 US US09/925,661 patent/US20020114925A1/en not_active Abandoned
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040194349A1 (en) * | 2003-04-04 | 2004-10-07 | Delgatty Grant Verdun | Shoe with removable vamp |
US6874256B2 (en) * | 2003-04-04 | 2005-04-05 | Vans, Inc. | Shoe with removable vamp |
US20050035626A1 (en) * | 2003-07-24 | 2005-02-17 | Dunaway James Hubert | Recreational vehicle roofing coating |
US7401843B2 (en) * | 2003-07-24 | 2008-07-22 | Tremco Incorporated | Recreational vehicle roofing coating |
CN102409553A (en) * | 2011-09-16 | 2012-04-11 | 东台市富安合成材料有限公司 | Method for preparing solvent-free vehicle interior leather based on in-situ polymerization |
WO2020209717A1 (en) * | 2019-04-09 | 2020-10-15 | Stahl International B.V. | Method for upgrading and embossing leather |
NL2022904B1 (en) * | 2019-04-09 | 2020-10-20 | Stahl Int B V | Method for upgrading and embossing leather |
Also Published As
Publication number | Publication date |
---|---|
MXPA03001244A (en) | 2004-03-10 |
JP2004506817A (en) | 2004-03-04 |
CA2418841A1 (en) | 2003-02-07 |
CN1446281A (en) | 2003-10-01 |
BR0113172A (en) | 2003-06-24 |
PL359851A1 (en) | 2004-09-06 |
AU2001279791A1 (en) | 2002-02-25 |
WO2002014596A1 (en) | 2002-02-21 |
KR20030029817A (en) | 2003-04-16 |
DE10039249A1 (en) | 2002-02-28 |
IL154145A0 (en) | 2003-07-31 |
EP1311720A1 (en) | 2003-05-21 |
CZ2003404A3 (en) | 2003-05-14 |
HUP0303752A2 (en) | 2007-09-28 |
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AS | Assignment |
Owner name: BAYER AKTIENGESELLSCHAFT, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BALZ, WERNER;JESTEL, FRANK;URBAN, JURGEN;AND OTHERS;REEL/FRAME:012620/0163;SIGNING DATES FROM 20011205 TO 20011207 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |