EP 1676713 A1 20060705 - Method for covering the surface of technical-fabric fibers, in particular for screen-printing processes
Title (en)
Method for covering the surface of technical-fabric fibers, in particular for screen-printing processes
Title (de)
Verfahren zum Überziehen von technischen Gewebefasern, insbesondere für Siebdruckverfahren
Title (fr)
Méthode pour recouvrir la surface de fibres de tissus techniques, en particulier pour les procédés d'impression sérigraphiques
Publication
Application
Priority
IT MI20042558 A 20041230
Abstract (en)
The present invention relates to a method for surface-covering technical-fabric fibers, in particular for screen-printing processes, which comprises a starting step of preparing a base solution comprising at least a molecular precursor of Si, Al, Ti, Zr oxides, a polar organic solvent, either of a protic or an aprotic type, and water to promote hydrolysis and condensing of said precursors in the presence of an acid-pH reaction acid and in the presence of a surface active agent; a step of surface actuating fabrics with an opening larger than 50 µm and a fiber diameter larger than 10 µm, by a reaction with a concentrated mineral acid and a following treatment in concentrated H 2 O 2 ; a covering step for covering the processed fabric by dipping it into the base solution, upon ageing the latter for such a time period as to induce rheologic properties for providing a homogeneous covering of fibers with a thickness less than 2 µm; and an end thermal processing step for evaporating the solvent off and thermally stabilizing the deposited material.
IPC 8 full level
B41N 1/24 (2006.01); B41C 1/14 (2006.01); B41M 1/12 (2006.01); D06B 21/00 (2006.01); D06M 13/50 (2006.01); D06M 13/513 (2006.01); D06M 13/517 (2006.01)
CPC (source: EP)
B41N 1/247 (2013.01); D06P 1/673 (2013.01); D06P 1/67383 (2013.01); D06P 5/001 (2013.01); D06P 5/22 (2013.01)
Citation (search report)
- [A] US 4824717 A 19890425 - NAKANISHI TORU [JP], et al
- [A] US 4741920 A 19880503 - UENO SUSUMU [JP], et al
- [A] US 4705608 A 19871110 - KELLER HEINZ [CH], et al
- [A] WO 02064877 A2 20020822 - PROCTER & GAMBLE [US]
- [A] WO 9958755 A1 19991118 - ASTEN INC [US]
- [A] WO 03000979 A2 20030103 - TRAPTEK LLC [US], et al
- [A] DATABASE WPI Section PQ Week 199922, Derwent World Patents Index; Class P75, AN 1999-259899, XP002375656
- [A] DATABASE WPI Section Ch Week 198746, Derwent World Patents Index; Class A97, AN 1987-325696, XP002375657
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 05028550 A 20051228; IT MI20042558 A 20041230