Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/003—Transfer printing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B44—DECORATIVE ARTS
  • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
  • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
  • B44C1/16—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like
  • B44C1/165—Processes, not specifically provided for elsewhere, for producing decorative surface effects for applying transfer pictures or the like for decalcomanias; sheet material therefor
  • B44C1/17—Dry transfer
• • C—CHEMISTRY; METALLURGY
  • C14—SKINS; HIDES; PELTS; LEATHER
  • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
  • C14B1/00—Manufacture of leather; Machines or devices therefor
  • C14B1/44—Mechanical treatment of leather surfaces
  • C14B1/56—Ornamenting, producing designs, embossing
• • 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
  • D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
  • D06N3/0095—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by inversion technique; by transfer processes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/02—Material containing basic nitrogen
  • D06P3/04—Material containing basic nitrogen containing amide groups
  • D06P3/32—Material containing basic nitrogen containing amide groups leather skins
• • C—CHEMISTRY; METALLURGY
  • C14—SKINS; HIDES; PELTS; LEATHER
  • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
  • C14B2700/00—Mechanical treatment or processing of skins, hides or leather in general; Pelt-shearing machines; Making driving belts; Machines for splitting intestines
  • C14B2700/18—Machines for producing designs on leather
• • 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.]
  • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
  • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
  • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
• • 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
  • Y10T428/31504—Composite [nonstructural laminate]
  • Y10T428/31855—Of addition polymer from unsaturated monomers

Definitions

• the present invention is based on the observation that leather can advantageously be printed it the surface to be printed is brought into contact, preferably with the use of heat and/or pressure, with a temporary carrier of paper, aluminum or regenerated cellulose, which comprises a transferable film of vinyl resin and one or more pigments and an underlying layer of ethylcellulose, or of a mixture of nitrocellulose and an aminoplast, the system is cooled if required, and the temporary carrier is separated from the ultimate carrier.
• the process is suitable for all natural and synthetic varieties of leather, except those that are heavily greased or otherwise provided with a hydrophobic impregnation.
• poromerics are accurately described in the relevant technical literature, compare, for example, the article Poromeric Man-Made Upper Materials in the journal Leather of Sept. 8, 1967, pp. 389-390, the article Poromeric Heel Dragging in the journal Chemical Week of July 26, 1969, 'pp. 43-44, the article by Dr. W. Roddy in the journal The Leather Manufacturer of May 1967, pp. 63-66, and the article in the journal Chemie-turan,” 1967, No. 1, pp. 730-734.
• the poromerics may consist of the most diverse artificial or natural materials, for example, linear polyesters, polyacrylonitrile, synthetic polyamides and polyurethanes; they must, however, possess the typical poromeric structure.
• This structure can, for example, be characterized in that the materials must possess a water vapor permeability of at least 0.5 milligram/ cm. per hour, that the pores, however, must be micropores, which do not allow water to pass through directly and that, finally, the materials must resemble leather in appearance.
• the leathers may advantageously be Patented Feb. 26, 1974 treated with a suitable primer or dressing agent, for example with one based on an acrylate resin or a polyurethane, so as to improve the adhesion, scratch resistance, crease resistance and abrasion resistance.
• a suitable primer or dressing agent for example with one based on an acrylate resin or a polyurethane, so as to improve the adhesion, scratch resistance, crease resistance and abrasion resistance.
• the temporary carriers to be used according to the process comprise, as the base layer, an optionally laminated aluminium foil, or a sheet or a strip of regenerated cellulose or paper, preferably a paper with few pores, or none at all for example Kraft paper.
• the sheets are coated with a mixture of nitrocellulose and an aminoplast.
• the proportion of nitrocellulose in this mixture is preferably within the range of from 40 to
• a urea-formaldehyde condensate is preferably used as the aminoplast. The best results are obtained with alcoholsoluble condensates.
• the thickness of the transferable film of vinyl resins is preferably from 0.5 to 10
• Polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate, consisting for example of to of vinyl chloride and 20 to 15% of vinyl acetate, are appropriatelyused as vinyl resins.
• the transferable film can consist of one or more layers; for example, it may consist of a layer of an unpigmented vinyl resin and overlying layers of pigmented vinyl resins.
• the pigmented layer or layers lying overlying the unpigmented vinyl resin layer may also comprise a different resin, for example an acrylic resin.
• the pigment particles are appropriately encapsulated by the vinyl resin.
• Inorganic pigments for example, carbon black, metal powders, titanium dioxide, hydrated iron oxides, ultramarine and chromium oxide may be used as pigments, but organic pigments, for example from the class of the azo, anthraquinone, phthalocyanine, nitro, perinone, perylenetetracarboxylic acid diimide, dioxazine, thioindigo or quinacridone dyestuffs, may especially be used.
• the temporary carrier is appropriately manufactured in accordance with the instructions of Swiss patent application No. 14,585/69, by printing one of the surfaces of the paper base layer with a solution or emulsion of nitrocellulose and aminoplast in a volatile organic solvent, and thereafter drying the material. A thin layer is thus obtained which contains a mixture of aminoplast and nitrocellulose.
• the paper should contain from 1 to 20 g. of this mixture per mi.
• the base layer prepared in this way can be printed directly with a printing ink containing the vinyl resin and a finely divided pigment, which is advantageously encap sulated by a vinyl resin. It has, however, proved advantageous to print the substrate first with an unpigmented vinyl resin layer and then with one or more pigmented vinyl resin layers or with a pigmented resin of some other composition, for example with an acrylic resin. Multicolor designs can be obtained if printing rollers inked in difierent colors are used.
• the transfer of the transferable film from the temporary mrrier to the ultimate carrier is preferably effected by pressing them together at an elevated temperature, advantageously at a temperature within the range of from 80 Q to C.
• the carrier paper can thereafter be stripped off easily.
• the prints obtained are generally distinguished by excellent adhesion, crease resistance and scratch resistance. It is advantageous to provide the printed leather surface with a transparent protective lacquer.
• a transfer paper After drying in air, a transfer paper, the manufacture of which is described below, is pressed onto the leather at 100 C. for seconds and under a pressure of 70 kg./cm. and the carrier paper is stripped off. A printed pattern of good adhesion, crease resistance and scratch resistance is obtained.
• Lacquer No. 1 viscosity 30 seconds in a 4 mm. Ford cup
• lacquer No. 2 viscosity seconds in a 4 mm. Ford cup
• the printing inks having the following composition:
• a pigment preparation comprising 50% of a pigment and of 50% of a copolymer of 85% of vinyl chloride and 50% of vinyl acetate (molecular weight 9,000), 6% of a copolymer of 85% of vinyl chloride and 15 of vinyl acetate (molecular weight 9,000), 10% of toluene and 72% of methyl ethyl ketone.
• the paper After drying, the paper is ready .for transfer printing.
• EXAMPLE 2 Semi-chrome-tanned and dyed sheepskin leather for garments is pressed together with a transfer paper, the manufacture of which is described in the preceding Example, and the combination is simultaneously heated to a temperature of 130 C. for 10 seconds. After removing the carrier paper, a printed pattern of very good crease resistance and scratch resistance is obtained.
• EXAMPLE 3 Flulfed split leather is primed by a method known per se and coated with an aqueous binder suspension, pigmented white (coating weight approximately 50 g. of solids/m3). After drying, it is pressed together with a transfer paper, the manufacture of which is described in 'Example 1, and the combination is simultaneously heated to 110 C. for 5 seconds. After removing the carrier paper, the leather is overlacquered with a clear lacquer based on a mixture of a methylmethacrylate resin and a vinyl chloride-vinyl acetate copolymer resin. The printed leather thus obtained is distinguished by high adhesion and crease resistance of the print and by high light resistance.
• a process for printing natural or synthetic leather wherein the improvement consists essentially of (a) contacting the surface of the leather to be printed with a temporary carrier of paper, aluminum or regenerated cellulose, said temporary carrier comprising a transferable film of vinyl resin and one or more pigments, and an underlying layer of a mixture of nitrocellulose and an aminoplast and (b) separating the temporary carrier from the surface of the leather which retains the transferable film.
• the transferable film comprises a layer of an unpigmented polyvinyl chloride and an overlying layer of a pigmented polyvinyl chloride or copolymer of vinyl chloride and vinyl acetate.
• the underlying layer comprises a mixture of nitrocellulose and a urea-formaldehyde resin.
• the temporary carrier used is an aluminum foil, the transferable film of which comprises polyvinyl chloride or a copolymer of vinyl chloride and vinyl acetate.
• copolymer comprises 80 to of vinyl chloride and 20 to 15 of vinyl acetate.
• nitrocellulose mixture additionally contains an alkyd resin.
• the underlying layer is a mixture of nitrocellulose and an aminoplast and wherein said mixture contains about 40 to 60% nitrocellulose.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Manufacturing & Machinery (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Coloring (AREA)
• Treatment And Processing Of Natural Fur Or Leather (AREA)
• Decoration By Transfer Pictures (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4231264

Family Applications (1)

Country Status (13)

Cited By (9)

Families Citing this family (6)

• 1970
  • 1970-02-18 CH CH232970A patent/CH536388A/de not_active IP Right Cessation
• 1971
  • 1971-02-09 CA CA104,842A patent/CA963606A/en not_active Expired
  • 1971-02-10 ZA ZA710830A patent/ZA71830B/xx unknown
  • 1971-02-10 US US00114399A patent/US3794544A/en not_active Expired - Lifetime
  • 1971-02-12 DE DE19712106695 patent/DE2106695A1/de active Pending
  • 1971-02-16 PL PL1971146276A patent/PL76346B1/xx unknown
  • 1971-02-16 BE BE763068A patent/BE763068A/xx unknown
  • 1971-02-17 AT AT01361/71A patent/AT303249B/de not_active IP Right Cessation
  • 1971-02-17 NL NL7102112A patent/NL7102112A/xx unknown
  • 1971-02-17 FR FR7105411A patent/FR2078722A5/fr not_active Expired
  • 1971-02-18 BR BR1118/71A patent/BR7101118D0/pt unknown
  • 1971-02-18 RO RO65984A patent/RO61881A/ro unknown
  • 1971-04-19 GB GB2172671A patent/GB1331145A/en not_active Expired

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