WO1993015156A1 - Materiau pelliculaire, feuille ou bande a surface hydrophile scellee, son procede de production et son utilisation - Google Patents

Materiau pelliculaire, feuille ou bande a surface hydrophile scellee, son procede de production et son utilisation Download PDF

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Publication number
WO1993015156A1
WO1993015156A1 PCT/EP1993/000235 EP9300235W WO9315156A1 WO 1993015156 A1 WO1993015156 A1 WO 1993015156A1 EP 9300235 W EP9300235 W EP 9300235W WO 9315156 A1 WO9315156 A1 WO 9315156A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
foil
strip
sheet
solution
Prior art date
Application number
PCT/EP1993/000235
Other languages
English (en)
Inventor
Peter Tost
Gerhard Hauck
Hans-Peter Herting
Original Assignee
Polychrome Gmbh
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 Polychrome Gmbh filed Critical Polychrome Gmbh
Priority to CA002129243A priority Critical patent/CA2129243A1/fr
Priority to EP93914522A priority patent/EP0625175A1/fr
Publication of WO1993015156A1 publication Critical patent/WO1993015156A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
    • B05D5/04—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures to obtain a surface receptive to ink or other liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/02—Letterpress printing, e.g. book printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D2202/00—Metallic substrate
    • B05D2202/20—Metallic substrate based on light metals
    • B05D2202/25—Metallic substrate based on light metals based on Al

Definitions

  • the invention relates to a material having a hydrophilic surface sealing, and to a method for producing it.
  • Such a material can be used as support for a radiation-sensitive layer of an offset printing plate.
  • a printing image is photomechanically copied, image-free locations on the support being formed by removing the corresponding areas of the radiation-sensitive layer. Simultaneously, the image- free locations form the background of the image.
  • the image locations are hydrophobic and colour-absorbing and the image-free locations are hydrophilic and thus repel the oily or oleophilic printing colours.
  • the support must ensure a good adhesion of the radio-sensitive layer in the image areas.
  • the prior art suggests an additional coating, the so-called sealing, between the support and the radio- sensitive layer for improving the adhesion of the latter and preventing staining of the support.
  • Known methods are for instance the sealing with silicate, with condensed aryl sulfonic acid (DE-A-32 17 870) , with polyvinyl phosphonic acid (PVPA) (DE-A-16 21 478) or with an aqueous mixture of a hydrolysate or a condensate of a silane and a fluoride of an alkali metal or of the metals Ti, Zr or Si (DE-A-39 28 794) .
  • EP-A-0 089 510 discloses a support material of aluminum or an alloy thereof which is covered with a hydrophilic sealing layer which is produced inter alia by using polyvinyl phosphonic acid with admixtures of silicates, borates and fluoroborates. These admixtures improve the adhesion of the image, the shelf-life of the radiation-sensitive layer, the hydrophilic action and the resistance to SnCl 2 .
  • the problem underlying the invention is to provide a support material having a hydrophilic surface sealing and a method for producing it by means of which the support characteristics are further improved and a universally usable sealing is achieved which has advantages for positively, negatively as well as for instance electrophotographically working printing plates.
  • the solution according to the invention is based on the idea to mix polyvinyl phosphonic acid with hydrofluoric acid as an agent which etches the support surface, and to use this as sealing solution.
  • the invention makes it possible to develop also strongly tinted coatings with weak positive developers in a staining-free manner.
  • the amount of hydrophilizing PVPA may be increased without impairing the adhesion of the coating and thus the pressure stability.
  • the sealing solution according to the invention allows the sealing of mechanically and electrolytically roughened surfaces as well as of surfaces which are galvanically plated with chromium. In the following, the invention is explained in detail by means of Examples.
  • An electrolytically grained aluminum substrate was anodized in sulfuric acid to 4 g/m 2 oxide. After repeated rinsing with deionized water the plate was dipped in the following sealing solution: 0.5 g/1 PVPA and 0.3 g/1 HF (100 %) , at a temperature of the bath of 50 ⁇ C for 10 seconds. This was followed by a rinse of tap water, squeegee and drying at 100°C for l min.
  • the resulting sealed basis was coated with the following positive solution (indicated in parts by weight) :
  • Example 2 (negative plate) A basis sealed as in Example 1 was coated with the following solution (indicated in parts by weight) :
  • a coating weight of 0.7 g/m 2 was obtained.
  • 988 B - 1 1 988 B contains 10 g diethanol amine, 10 g sodium octyl sulfate and 980 g water - , a shorter exposure time was found compared to a basis which was only sealed with PVPA. During printing, wear appeared considerably later than with the comparative plate which had been exposed to the same solid layer.
  • Example 1 For comparison, the aluminum support of Example 1 was treated with a conventional coating solution.

Landscapes

  • Printing Plates And Materials Therefor (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)

Abstract

L'invention concerne un revêtement étanche d'une surface hydrophile et son procédé de production. Le revêtement étanche de la surface comporte une solution qui contient de l'acide phosphonique de polyvinyle et de l'acide hydrofluorique. Les avantages de l'invention sont des propriétés d'utilisation améliorées et une production simplifiée.
PCT/EP1993/000235 1992-02-03 1993-02-02 Materiau pelliculaire, feuille ou bande a surface hydrophile scellee, son procede de production et son utilisation WO1993015156A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002129243A CA2129243A1 (fr) 1992-02-03 1993-02-02 Materiau sous forme de feuille, de feuillard ou en bande, avec surface hydrophile, methode pour sa fabrication et utilisation de celui-ci
EP93914522A EP0625175A1 (fr) 1992-02-03 1993-02-02 Materiau pelliculaire, feuille ou bande a surface hydrophile scellee, son procede de production et son utilisation

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19924203010 DE4203010C1 (fr) 1992-02-03 1992-02-03
DEP4203010.2 1992-02-03

Publications (1)

Publication Number Publication Date
WO1993015156A1 true WO1993015156A1 (fr) 1993-08-05

Family

ID=6450852

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1993/000235 WO1993015156A1 (fr) 1992-02-03 1993-02-02 Materiau pelliculaire, feuille ou bande a surface hydrophile scellee, son procede de production et son utilisation

Country Status (4)

Country Link
EP (1) EP0625175A1 (fr)
CA (1) CA2129243A1 (fr)
DE (1) DE4203010C1 (fr)
WO (1) WO1993015156A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6218075B1 (en) * 1997-08-26 2001-04-17 Fuji Photo Film Co., Ltd. Photosensitive lithographic printing plate
WO2012145162A1 (fr) 2011-04-19 2012-10-26 Eastman Kodak Company Substrats en aluminium et précurseurs de plaque d'impression lithographique
CN106957583A (zh) * 2017-02-16 2017-07-18 蚁术新材料科技（上海）有限公司 一种铝版基封孔处理液及高亲水铝版基的制备方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9407676A (pt) * 1993-09-29 1997-02-04 Hoechst Celanese Corp Processo para melhorar placa de impressao litográfica placa de impressao litográfica e processo para melhorar a capacidade hidrófila de placa de impressao litográfica

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1621478A1 (de) * 1967-12-04 1971-04-29 Kalle Ag Schichttraeger fuer lichtempfindliches Material zur Herstellung einer Flachdruckplatte

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1621478A1 (de) * 1967-12-04 1971-04-29 Kalle Ag Schichttraeger fuer lichtempfindliches Material zur Herstellung einer Flachdruckplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6218075B1 (en) * 1997-08-26 2001-04-17 Fuji Photo Film Co., Ltd. Photosensitive lithographic printing plate
WO2012145162A1 (fr) 2011-04-19 2012-10-26 Eastman Kodak Company Substrats en aluminium et précurseurs de plaque d'impression lithographique
CN106957583A (zh) * 2017-02-16 2017-07-18 蚁术新材料科技（上海）有限公司 一种铝版基封孔处理液及高亲水铝版基的制备方法

Also Published As

Publication number Publication date
EP0625175A1 (fr) 1994-11-23
CA2129243A1 (fr) 1993-08-05
DE4203010C1 (fr) 1993-07-15

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