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EP1676713A1 - Méthode pour recouvrir la surface de fibres de tissus techniques, en particulier pour les procédés d'impression sérigraphiques - Google Patents

Méthode pour recouvrir la surface de fibres de tissus techniques, en particulier pour les procédés d'impression sérigraphiques Download PDF

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Publication number
EP1676713A1
EP1676713A1 EP05028550A EP05028550A EP1676713A1 EP 1676713 A1 EP1676713 A1 EP 1676713A1 EP 05028550 A EP05028550 A EP 05028550A EP 05028550 A EP05028550 A EP 05028550A EP 1676713 A1 EP1676713 A1 EP 1676713A1
Authority
EP
European Patent Office
Prior art keywords
covering
fabric
base solution
acid
fabric material
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.)
Withdrawn
Application number
EP05028550A
Other languages
German (de)
English (en)
Inventor
Renzo Saatiprint S.p.A. Campostrini
Giovanni Saatiprint S.p.A. Carturan
Raffaele Saatiprint S.p.A. Corvaglia
Paolo Saatiprint S.p.A. Fracas
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.)
SAATI SpA
Original Assignee
SAATIPRINT SpA
SAATI SpA
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 SAATIPRINT SpA, SAATI SpA filed Critical SAATIPRINT SpA
Publication of EP1676713A1 publication Critical patent/EP1676713A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/001Special chemical aspects of printing textile materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41NPRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
    • B41N1/00Printing plates or foils; Materials therefor
    • B41N1/24Stencils; Stencil materials; Carriers therefor
    • B41N1/247Meshes, gauzes, woven or similar screen materials; Preparation thereof, e.g. by plasma treatment
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/673Inorganic compounds
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/673Inorganic compounds
    • D06P1/67383Inorganic compounds containing silicon
    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P5/00Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/22Effecting variation of dye affinity on textile material by chemical means that react with the fibre

Definitions

  • the present invention relates to a method for surface covering technical-fabric fibers, in particular for screen printing processes.
  • the surface to be printed upon is entrained with a comparatively high speed between the printing cylinder and a further cylinder operating as a bearing surface.
  • the ink is supplied by an ink supplying system arranged inside the first cylinder, thereby providing a continuous type of printing system.
  • the fabric material to be used for making the printing surface must have a high flexure stiffness, a large size and a high mechanical stability, and a good resistance against corrosion, as well as a thin thickness.
  • the aim of the present invention is to overcome the above mentioned problems, by providing a method for surface covering technical-fabric fibers, in particular for screen printing processes, allowing to stiffen, by increasing the flexure modulus, already made technical fabric materials comprising polymeric fibers, by depositing inorganic oxides, even of an organically modified type, and by directly continuously applying the process on the already existing material.
  • a main object of the present invention is to provide such a method allowing the mesh size to be held unaltered, in particular without altering the original fabric material geometry, and this by a process operating at a temperature mating the characteristics of the polymer and finished fabric material.
  • Another object of the present invention is to modify the wetting properties of the surface, to broaden the selection of printing paste and ink materials.
  • Yet another object of the present invention is to introduce, into the oxide layer used for stiffening the material, nanometric particle dispersions, even of a metal type, and having such a resistivity as to promote a rejection of atmospheric dust materials and reduce to a minimum a possible accumulation of electric charges, by immediately dispersing the latter.
  • the method comprises the further step of surface actuating fibers of fabric materials having an opening from 50 ⁇ m and a fiber diameter from 10 ⁇ m, by a chemical reaction in the presence of an acid which can comprise concentrated H 2 SO 4 or other mineral acid; and then a further step of performing a following treatment by concentrated H 2 O 2 .
  • the actuation can also be carried out by a cold-plasma process or treatment.
  • the thus processed fabric material is covered by dipping it into the base solution, upon ageing the latter for such a time as to induce rheologic properties suitable to provide a homogeneous covering of the individual fibers, with a covering thickness not larger than 2 ⁇ m.
  • the solvent is evaporated off and the deposited material is thermally stabilized, by a thermal process designed as not to modify the original geometry of the fabric material and increase the elastic modulus of the deposited material, with a consequent stiffening of the fabric.
  • the base solution can comprise RSiX 3 , where R is an alkyl or aryl, X is an halogen or OR, in a concentration from 5 to 150 g/l SiO 2 (as a rated value), preferably from 20 to 50 g/l SiO 2 (as a rated value) and acidified H 2 O which has been acidified with an acid pH reaction acid, in such an amount as to provide a molar ratio Si/H 2 O at least equal to 2.
  • the first solution can comprise S 2 SO 4 , from 10 to 50%, and preferably 20%
  • the second solution can comprise H 2 O 2 , from 30 to 120 volumes, preferably 120 volumes, at a temperature from 25°C to 90°C, preferably 40°C.
  • the base solution can comprise Al(OR) 3-x (X) x , where R represents an alkyl or aryl and X an organic chelating anion and x can have values from 0 to 1.
  • the base solution can comprise Ti(or Zr)(X) x (OR) 4-x , where R represents an alkyl or aryl and X an organic chelating anion, and x can assume values from 0 to 1.
  • a second aspect of the present invention provides to stiffen the fabric by using the base inorganic oxide deposit and by controlling the reaction rheology to provide the base solution as the processed fabric is contacted by a mineral acid.
  • the molar ratio RSiX 3 /surface active agent is preferably of 1/O.1.
  • the stabilizing of the deposit is performed in the final or end method step, by heating the material to cause the solvent to be evaporated off, and complete the chemical reactions of the precursors with water while holding unaltered the geometric arrangement of the fabric material; this can be carried out by a heating process, by using different heating techniques, preferably by IR illuminating or heating.
  • the invention provides the advantage that the above disclosed method steps are so performed as to provide a continuous process in a well controlled environment, without interfering against other optional or possible technologies as applied to technical fabric materials for screen printing applications.
  • the apparatus for carrying out the above disclosed method comprises a framework 1, including a fabric material T feeding assembly 2, said fabric material T being engaged by cylinders and, through transmission pulleys, being fed to a starting immersion or dipping station 3.
  • the fabric material is immersed or dipped into the impregnating solution and then conveyed, through the transmission pulleys 4, to a following impregnating station 5, if the first impregnation is not suitable to provide a sufficient thickness deposit.
  • the outlet fabric from each immersion station is then impinged upon by a hot air jet, provided by a blowing device 6, for removing any excess liquid and to facilitate the mesh opening.
  • the fabric material is conveyed into an IR beam oven, generally indicated by the reference number 7, where said fabric material is dried and size stabilized, as an end processing step.
  • Example 1 the polyethylenglycole terephthalate fabric, having fibers with a diameter of 20 ⁇ m and a mesh opening of 60 ⁇ m, is used in the form of a web having a width of 5 cm, wound up and then distended by pulleys and braking cylinders pertaining to the apparatus inlet assembly 2.
  • the actuation is performed by dipping the fabric material into a solution comprising H 2 SO 4 , 10% by weight at 50°C, and with such a sliding speed as to provide a suitable contact between the web and solution, for a time period of substantially 1 minute.
  • the outlet web is then immersed into a solution, at a temperature of 25°C, containing 120 volume H 2 O 2 , with a contact time identical to that of the preceding treatment.
  • the web is then introduced into a silicon oxide precursor solution upon ageing the latter for 24 hours, correspondingly to the station 3 shown in figure 1.
  • the solution is left under a high speed stirring condition obtained by a magnetic stirring device for 2 hours and then a NH 4 O 3 SO(CH 2 ) 11 CH 3 surface active agent is added in an amount of 8 ml/solution liter.
  • the solution is left under a high speed stirring condition for further 22 hours, before using it.
  • the web is immersed into this solution with such a sliding speed as to assure a contact time between the web and solution of a centimeter/sec.
  • the outlet sample is subjected to a hot ventilating air, at a temperature of 120°C, blown perpendicularly to the with of the web, with an air flow rate of a liter/sec for a web meter.
  • the web is collected onto spindles and held in web vessels.
  • the flexure modulus increase which is thereby obtained corresponds to about 30% with respect to a non-processed fabric material.
  • Example 2 the polyester fabric material, including fibers having a diameter of 31 ⁇ m and mesh openings of 50 ⁇ m is used in the form of a web or strip having a width of 25 cm, supplied in a wound up condition and then distended by pulleys and braking cylinders.
  • Said web actuated by causing it to pass through an air atmospheric cold plasma, is then introduced into a precursor solution comprising silicon oxide and titanium oxide, which has been subjected to an ageing process for 4 hours.
  • the solution is left under stirring (provided by a magnetic stirrer device) for 2 hours.
  • the obtained solution is added with a surface active agent NH 4 O 3 SO (CH 2 ) 11 CH 3 in an amount of 10 ml/liter and said solution is held under a high speed stirring condition for 4 hours.
  • the web or strip is immersed into this solution with such a sliding speed as to provide a contact time corresponding to 1 cm/minute.
  • the outlet sample is processed by processing air at a temperature of 100°C, with an air flow speed and air flow rate designed to subject said web to an air flow of 10 1/meter.
  • The, the thus processed web is conveyed to an IR beam dry oven, adapted to bring the sample surface temperature to 300°C.
  • the increase of the flexural modulus corresponds to about 120% with respect a non processed web.
  • polyester fabric materials can be advantageously used, upon stiffening, for building rotary screen printing cylinders, without using metal fabrics, since hybrid organic-inorganic surface material are used thereon.
  • a deposit at the joining weft and warp joining points is such as to advantageously improve the size stability of the fabric material and its resistance against the corrosive action of printing ink and paste materials.
  • the covering can be actuated to reduce or fully eliminate dust or powder deposits or for embedding therein other inorganic oxides or metal dispersions, designed for providing the fabric material with very good antistatic, electric conductivity or UV absorption properties.
  • Another application field would relate to a modification of the wetting properties, induced by the sol-gel oxide deposit.
  • the used oxide precursors, surface active agents or the activation of the surface fibers can be used in any other desired fields, for producing fabric materials based on polymeric fibers having any desired stiffness, mechanical stability, and corrosion and abrading resistance characteristics.
  • the stiffening of the screen printing technical fabric by homogeneously depositing thereon inorganic oxides (on the surface of their fibers), does not modify the other features of the fabric material and, in particular, the fabric mesh openings.
  • the used materials, as well as the contingent size and shapes can be any, depending on requirements.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
EP05028550A 2004-12-30 2005-12-28 Méthode pour recouvrir la surface de fibres de tissus techniques, en particulier pour les procédés d'impression sérigraphiques Withdrawn EP1676713A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20042558 ITMI20042558A1 (it) 2004-12-30 2004-12-30 Procedimento per il ricoprimento superficiale di fibre per tessuti tecnici in particolare per stampa serigrafica

Publications (1)

Publication Number Publication Date
EP1676713A1 true EP1676713A1 (fr) 2006-07-05

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EP05028550A Withdrawn EP1676713A1 (fr) 2004-12-30 2005-12-28 Méthode pour recouvrir la surface de fibres de tissus techniques, en particulier pour les procédés d'impression sérigraphiques

Country Status (2)

Country Link
EP (1) EP1676713A1 (fr)
IT (1) ITMI20042558A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101403184B (zh) * 2008-11-07 2012-07-18 广东德美精细化工股份有限公司 耐日晒牢度提升剂及其制备方法和用于织物的后整理方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62233295A (ja) * 1986-04-03 1987-10-13 Toray Ind Inc ポリエステルからなるスクリ−ン紗の製造方法
US4705608A (en) * 1984-11-14 1987-11-10 Ferd Ruesch Ag Process for making screen printing fabrics for screen printing cylinders
US4741920A (en) * 1985-07-09 1988-05-03 Susumu Ueno Mesh and printing screen for screen printing and a method for the preparation thereof
US4824717A (en) * 1987-01-07 1989-04-25 Shin-Etsu Chemical Co., Ltd. Mesh screen of polyester filaments for screen printing
JPH1178273A (ja) * 1997-09-01 1999-03-23 Nippon Haiburitsuto:Kk スクリーン印刷版用メッシュ
WO1999058755A1 (fr) * 1998-05-08 1999-11-18 Asten, Inc. Structures et composants associes presentant une caracteristique de surface souhaitee, et procedes et appareils de fabrication de telles structures
WO2002064877A2 (fr) * 2001-01-30 2002-08-22 The Procter & Gamble Company Compositions de revetement pouvant modifier des surfaces
WO2003000979A2 (fr) * 2001-06-26 2003-01-03 Traptek Llc Fil traite et ses procedes de fabrication

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4705608A (en) * 1984-11-14 1987-11-10 Ferd Ruesch Ag Process for making screen printing fabrics for screen printing cylinders
US4741920A (en) * 1985-07-09 1988-05-03 Susumu Ueno Mesh and printing screen for screen printing and a method for the preparation thereof
JPS62233295A (ja) * 1986-04-03 1987-10-13 Toray Ind Inc ポリエステルからなるスクリ−ン紗の製造方法
US4824717A (en) * 1987-01-07 1989-04-25 Shin-Etsu Chemical Co., Ltd. Mesh screen of polyester filaments for screen printing
JPH1178273A (ja) * 1997-09-01 1999-03-23 Nippon Haiburitsuto:Kk スクリーン印刷版用メッシュ
WO1999058755A1 (fr) * 1998-05-08 1999-11-18 Asten, Inc. Structures et composants associes presentant une caracteristique de surface souhaitee, et procedes et appareils de fabrication de telles structures
WO2002064877A2 (fr) * 2001-01-30 2002-08-22 The Procter & Gamble Company Compositions de revetement pouvant modifier des surfaces
WO2003000979A2 (fr) * 2001-06-26 2003-01-03 Traptek Llc Fil traite et ses procedes de fabrication

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198746, Derwent World Patents Index; Class A97, AN 1987-325696, XP002375657 *
DATABASE WPI Section PQ Week 199922, Derwent World Patents Index; Class P75, AN 1999-259899, XP002375656 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101403184B (zh) * 2008-11-07 2012-07-18 广东德美精细化工股份有限公司 耐日晒牢度提升剂及其制备方法和用于织物的后整理方法

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