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
  • D06P5/004—Transfer printing using subliming dyes
  • D06P5/005—Transfer printing using subliming dyes on resin-treated fibres
• • 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

Definitions

• the invention relates to a process for preparing a textile. coated with a printed pattern.
• Thermal transfer printing also called thermal printing, has been used for many years to decorate various supports, in particular textiles.
• This technique generally uses textile bands on which the pattern must be transferred and a support with transferable printing.
• the medium bearing the pattern to be transferred consists most often in paper, the pattern being made on this paper with inks, in particular sublimable inks.
• the transfer is carried out by bringing the strip into contact textile and paper, at a high temperature, around from 150 ° C to 250 ° C, usually in the presence of an agent carrier.
• the contact of textile and paper can be realized with different devices, in particular with cylinder or carpet.
• thermal printing has several disadvantages.
• the printed textile can present paler areas or lightening general. Also, tasks may remain on the even after several repeated washes.
• the textile is printed and then subsequently treated with a composition, usually polymer, giving it the desired resistance to stains and water penetration.
• the manufacturer is then obliged to provide stocks of different printed textiles that need to be processed to acquire resistance to the task and to the penetration of the water.
• document WO-A-95 25843 describes a method of treatment of a tissue, with a view to giving it anti-microbial and flame retardant properties.
• the fabric is immersed in a composition latex-based.
• This latex composition thanks to its penetration into the fibers of the fabric, provides the desired properties.
• this fiber treatment can be completed by depositing a second layer based on latex.
• the object of the invention is to remedy these drawbacks, by proposing a process for preparing a printed textile with satisfactory resistance to the task and to the penetration of liquids and that is usable industrially.
• Another object of the invention is to propose a method in which the textile does not need to be prepared, prior to printing, to present an affinity particular with regard to the dyes used.
• Another object of the invention is to propose a method to significantly resolve the costs of inventory management.
• a first object of the invention therefore relates to a method of preparation of a printed textile, resistant to stains and penetration of liquids and presenting satisfactory touch characteristics.
• Another subject of the invention relates to a printed textile, possessing satisfactory resistance to the task and to the penetration of liquids and its use.
• the inventors have indeed found that it is possible make printed textiles treated anti-stain and anti-penetration liquids, in particular anti-penetration of water, by depositing at least one layer before printing protective and printing the decorative pattern not in the textile itself, but in the layer (s) protective.
• the textile no longer needs to have a special affinity for dyes, such as example of sublimable inks deposited on paper transfer.
• Textile fibers no longer need to be processed before printing for, for example, plug the spaces between the fibers making up the textile.
• the protective layer used to impart strength to the task and to the penetration of water includes a polymeric composition comprising a polymeric compound or a mixture of polymeric compounds.
• Polymeric compounds which can be used include in particular polyurethane-based polymers or copolymers, polymers or copolymers based on acrylic, polymers or polyvinyl based copolymers.
• Polyurethane-based polymers or copolymers include in particular polyisocyanates, polyethers polyols, polyesters of polyols.
• Acrylic-based polymers or copolymers include especially acrylonitrile derivatives, derivatives acrylamide, acrylic ester derivatives, especially methacrylamide, lower alkyl methacrylates, especially methyl, ethyl, butyl, pentyl.
• Polyvinyl-based polymers or copolymers include in particular polyvinyl acetals, in particular polyvinyl acetal, polyvinyl butyral.
• the polymeric composition may further comprise one or more several non-sticky compounds, as well as additives usually used for these compositions.
• the compound with non-sticky effect can be chosen from paraffin-based products, silica-based, silicone, surfactants such as polydimethylsiloxane, preferably in the form of an emulsion, or a mixture of these products.
• the polymeric composition may further comprise one or more several crosslinking agents, in particular to accelerate, control the crosslinking of the polymeric compound (s) used.
• crosslinking agents are known and already used in the textile industry, especially in the manufacture of stabilizer products.
• Crosslinking agents include resins based melamine, blocked isocyanates, isocyanates, aziridines, or mixtures of these products.
• the polymeric composition is used in liquid form, in particular in the form of a aqueous dispersion or a mixture of aqueous dispersions.
• the composition polymer is used as a solution in a solvent or a mixture of solvents.
• the solvent can be chosen from those conventionally used for dissolving polymeric compounds, in particular solvents based on ethyl acetate or lower alkyl containing up to five atoms carbon, solvents based on toluene, xylene, methyl ethyl ketone.
• composition polymer is used in solid form, in particular under powder or film form.
• the polymeric composition is deposited on the textile by a conventional method of laminating.
• the composition polymer is deposited on the textile by a method coating.
• a classic method of direct coating or transfer can be used.
• coating devices by scraping, notably scraping in the air, scraping on apron, scraping on cylinder and also coating devices rotating frame.
• At least one protective layer is deposited on the textile.
• the polymer compositions used for each layer can be the same or different between them.
• the same polymeric composition can be used for the different layers.
• the first protective layer is deposited with a grammage of 10 to 70 g / m 2 , the second layer with a grammage of 10 to 50 g / m 2 and the third layer with a grammage of 5 and 30 g / m 2 .
• the coating speed varies between 10 and 50 m / min.
• the textile coated with the protective layer (s) is then subjected to at least one drying step, to a temperature between 80 ° C and 150 ° C, for a period between 30 s and 3 min.
• Drying is carried out after each deposition of a layer protective or after the deposition of all layers protective measures desired.
• Drying is carried out using any means conventionally used, such as hot air, infrared, etc.
• Textile dried and coated with the layer (s) protective is then subjected to calendering.
• Calendering notably makes it possible to obtain a product with a smooth appearance and satisfactory fixation of the protective layers.
• Calendering is carried out by any known means, for example with a calendering cylinder, at a pressure included between 8.5 kg / cm and 400 kg / cm, preferably between 16 kg / cm and 85 kg / cm and at a temperature between 80 ° C and 250 ° C, preferably between 100 ° C and 190 ° C.
• the calendering time may vary depending on the temperature used.
• Calendering can be done after each deposit and drying of a protective layer or after deposition and drying of all protective layers.
• the deposition operations of the protective layer (s), drying and calendering can be done in continuous or discontinuous.
• the coated textile is then subjected to a step of polymerization of the protective layer (s), by heating at a temperature between 150 ° C and 200 ° C.
• Polymerization can be achieved by heating the textile at a temperature of the order of 170 ° C. for a period of around 1.30 min.
• a shorter heating time, of the order of one minute, may be sufficient when a temperature of the order of 180 ° C is used.
• polymerization is carried out at a rate from 10 to 30 m / min.
• the polymerization can be carried out by passing through a tunnel oven or any other suitable device, in using any conventional means, such as heating by hot air, by contact, by ultraviolet rays.
• the method of the invention comprises after the deposition step at least one protective layer, a fixing step, by penetrating the thickness of the protective layer, one or more dyes.
• the fixing of the dyes is made by thermal printing, for example with a cylinder device, carpet.
• Printing by thermal printing can in particular be performed using transfer paper on which is printed, using inks, in particular sublimable, the motif decorative to be transferred.
• the thermal printing is performed using heated transfer paper, by through a calendering drum, at a temperature between 180 ° C and 240 ° C.
• the textile coated with the protective layer (s) is put in contact with the transfer paper, through a pressure cylinder, at conventional pressures used for this technique.
• the speed of travel of the strip carrying the support to print can be 3 to 15 m per min.
• a technique pigment printing for example with a device rotary frame, also known in itself, can be used, by scrolling the print media to a speed between 20 and 70 m / min. and at a temperature between 80 ° C and 250 ° C.
• the textile to be printed undergoes at least one additional processing step before the dye fixing step.
• This treatment can be carried out before (pre-treatment) and / or after (post-processing) the step of depositing the protective layers and increases the properties of strength of the structure and / or improves the qualities of the final product.
• Pre-treatment and / or post-treatment is carried out by example using a classic padding technique, room temperature, for example in a soaking bath, using an additive composition.
• Additives which can be used include in particular the compounds fluorinated, in particular fluorinated resins, compounds with paraffin-based, silicone-based products, zirconium salts or a mixture of these products.
• Fluorinated compounds include in particular polymers or fluorinated copolymers based on acrylate, adipate or urethane or mixtures of these products.
• fluorinated resins examples include products marketed under the names Scothgard FC 251 and FX 3575 (registered trademarks) by 3M, France.
• Fluorinated resins can be used in the form an emulsion in an aqueous or slightly solvent-based medium, with a cationic, anionic or nonionic character.
• additives especially those fluorinated, allow to "fill in” any textile regions on which the protective layer (s) have not been perfectly applied.
• This treatment prior to the fixing of the dyes allows thus improving the resistance properties to the water penetration, especially the characteristics of water repellency of the textile, by modifying the tensions superficial on the surface of the textile.
• This processing does not significantly modify, on the other hand, the features, including touch, flexibility, textile. It is implemented under conditions relatively mild, especially with regard to the quantity of additives used, so as not to block the spaces between the fibers making up the textile.
• the additive composition may further comprise one or more several crosslinking agents, to accelerate, control crosslinking of polymeric composition (s) used for the protective layer (s).
• crosslinking agents are known and already used in the textile industry, especially in the manufacture of stabilizer products.
• Crosslinking agents include resins based melamine, blocked isocyanates, isocyanates, aziridines, or a mixture of these products.
• composition of additives may further comprise products to keep the pH at a value determined, generally acidic, enhancing products certain characteristics, notably flexibility, of the textile.
• Pre- and / or post-treatment can be followed by at least a drying step, at a temperature between 80 ° C and 160 ° C.
• Pre-treatment and / or post-treatment can be followed a polymerization step as described in what precedes.
• the process of the invention is suitable for printing textiles made from natural, artificial or synthetic or mixtures thereof.
• These include textiles made from cotton fibers, viscose, flax or mixtures thereof; the textiles based on polyamide, polyester or mixtures thereof; textiles with both natural, artificial and / or synthetic fibers, especially those based on cotton-polyester or cotton-viscose.
• Textiles can be those commonly used in the textile industry, in particular woven products, not woven or knitted.
• the method of the invention also makes it possible to remedy the product storage issues.
• the printing step can be delayed in the time, without the textile degrading.
• the invention also relates to a textile coated with a printed pattern.
• the textile of the invention coated with a printed pattern and with resistance to the task and to the penetration of liquids, is characterized in that it includes, at least on one of its faces, at least one protective layer made from a polymeric composition and, fixed in the thickness of the protective layer, one or more dyes.
• the textile of the invention can be obtained by putting implements the process described in the above.
• the invention also relates to the use of textiles coated with a decorative pattern, obtained by putting implementing the method described in the foregoing.
• the textiles according to the invention can be used in as upholstery, especially covering of sofas, armchairs; linens, especially tablecloths, curtains, especially shower curtains, net curtains.
• a textile support made of polyester fibers comprising 47 chain wires with a unit titration of 23 dtex and 50 weft yarns with a unit titration of 167 dtex, with a weight per square meter of 70-75 g is pretreated by immersion in a soaking bath containing a resin fluoride marketed under the name Stochgard FC 251 (registered trademark) by 3M (France).
• the pre-treatment is carried out by padding at temperature ambient.
• the scarf rearing rate is 30 to 50%.
• the textile is then dried in a Brückner oar at seven compartments, at a stepped temperature varying between 100 ° C and 140 ° C.
• the textile is then fed to a device coating with a scraping system in the air.
• the pre-treated and coated textile is then dried in a tunnel oven (Brückner train set) with seven compartments, one stepped temperature varying between 100 ° C and 150 ° C.
• the coated textile is then brought into contact with a calendering cylinder heated to a temperature of 100 ° C and at a pressure of 40 kg / cm, at a speed of 20 m per min.
• the second layer is deposited with a grammage of 15 g / m 2 .
• the coated fabric is then dried in an oven tunnel (Brückner train) with seven compartments, one stepped temperature varying between 90 ° C and 150 ° C.
• the textile is then brought into contact with a cylinder of calendering heated to a temperature of 100 ° C and with a pressure of 50 kg / cm, at a speed of 20 m per min.
• the two coating layers are polymerized in a tunnel oven (Brückner train) with seven compartments heated to a temperature of 180 ° C, at a speed of 15 m per min.
• the textile thus coated and treated is ready to be printed by transfer.
• the textile is thermo-printed on a TI-MT type machine marketed by the company LEMAIRE, France.
• SUBLISTATIC type polyester transfer paper (registered trademark) (commercially available from SUBLISTATIC, France) with the motif transfer is brought into contact with the textile.
• the transfer is carried out at a temperature of 220 ° C., at a speed of 11 m per min. and the contact pressure between the textile and the transfer paper recommended by the supplier of the transfer paper.
• the synthetic textile obtained comprises on one of its faces the printed pattern with good sharpness.
• the coated textile is then dried in a tunnel oven (Brückner train) with six compartments, at one temperature stepped between 100 ° C and 160 ° C.
• the coated textile is then brought into contact with a calendering cylinder heated to a temperature of 100 ° C and at a pressure of 40 kg / cm, at a speed of 25 m per min.
• the second layer is deposited with a grammage of 15 g / m 2 .
• the coated fabric is then dried in an oven six-compartment tunnel (Brückner train), one stepped temperature varying between 100 ° C and 160 ° C.
• the textile is then brought into contact with a cylinder of calendering heated to a temperature of 100 ° C and to a pressure of 50 kg / cm, at a speed of 20 m per min.
• the breeding rate is 45%.
• the coated and post-treated product is polymerized on a six-compartment Brückner train heated to one temperature of 180 ° C, at a speed of 15 m per min.
• the coated and post-treated textile is then heat-printed, using the same device and the same conditions as in Example 1 above.
• the natural textile obtained has on one of its faces the pattern printed with good sharpness.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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Citations (6)

• 1997
  • 1997-07-11 FR FR9708885A patent/FR2765897B1/fr not_active Expired - Fee Related
• 1998
  • 1998-07-10 EP EP98401759A patent/EP0890673A1/de not_active Withdrawn

Patent Citations (6)

Non-Patent Citations (3)

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