DE600318C - Process for etching printing plates which are covered with a developed copy layer - Google Patents
Process for etching printing plates which are covered with a developed copy layerInfo
- Publication number
- DE600318C DE600318C DEB160373D DEB0160373D DE600318C DE 600318 C DE600318 C DE 600318C DE B160373 D DEB160373 D DE B160373D DE B0160373 D DEB0160373 D DE B0160373D DE 600318 C DE600318 C DE 600318C
- Authority
- DE
- Germany
- Prior art keywords
- printing plates
- covered
- etching
- etching printing
- copy layer
- 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.)
- Expired
Links
- 238000005530 etching Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 4
- 239000000084 colloidal system Substances 0.000 claims description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 239000002585 base Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000004922 lacquer Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910001629 magnesium chloride Inorganic materials 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- OIDPCXKPHYRNKH-UHFFFAOYSA-J chrome alum Chemical compound [K]OS(=O)(=O)O[Cr]1OS(=O)(=O)O1 OIDPCXKPHYRNKH-UHFFFAOYSA-J 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011592 zinc chloride Substances 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/16—Acidic compositions
Description
Verfahren zum Ätzen von Druckplatten, die mit einer entwickelten Kopierschicht bedeckt sind Das Patent 489 1a7 schlägt für die Ätzung von Druckplatten, die mit einer entwickelten Kopierschicht überzogen sind, die Verwendung eines Gemisches von konzentrierter Eisenchloridlösung mit Salpetersäure vor. Wird diese Ätzmischung beispielsweise für Druckplatten aus Zink oder Aluminium angewandt, so tritt auf dem geätzten Metall eine Niederschlagsbildung von Eisen auf, da das in der elektrolytischen Spannungsreihe vor dem Eisen stehende Zink das edlere Eisen aus seiner Lösung ausscheidet. Für das Haften der Farbe ist ein solcher Niederschlag sehr günstig.Process for etching printing plates with a developed copy layer The patent 489 1a7 suggests for the etching of printing plates that are covered with a developed copy layer, the use of a mixture of concentrated ferric chloride solution with nitric acid. Will this etching mixture for example used for printing plates made of zinc or aluminum, it occurs the etched metal causes a deposit of iron, as this is in the electrolytic Zinc standing in front of the iron separates the more noble iron from its solution. Such a precipitate is very beneficial for the adhesion of the paint.
In vielen Fällen dagegen ist es erwünscht, bei der Ätzung ein absolut reines Metall zu erhalten, beispielsweise dann, wenn die geätzten Druckpunkte zunächst mit einem Lack und danach mit Farbe ausgefüllt werden sollen. Lacke besitzen naturgemäß auf vollkommen reiner Metallfläche die beste Haftfestigkeit. Die Anbringüng festhaftender Lacke in geätzten Druckpunkten ist deshalb von Wert, weil dieser Lackgrund während des Druckvorganges in dem geätzten Punkt verbleiben soll, um ihn vor Angriff durch Wasser und Ätzsalze zu schützen.In many cases, on the other hand, it is desirable to use an absolute for the etching to obtain pure metal, for example when the etched pressure points are initially should be filled in with a varnish and then with color. Lacquers naturally possess The best adhesive strength on a completely pure metal surface. The attachment more firmly adherent Lacquer in etched pressure points is of value because this lacquer base during of the printing process should remain in the etched point in order to prevent it from attacking Protect water and caustic salts.
Für die Erzielung eines vollkommen reinen Metallgrundes bei der Ätzung schlägt vorliegende Erfindung die Verwendung geeigneter Säuren im Gemisch mit konzentrierten, hochviscosen Lösungen hygroskopischer Salze vor, deren Base ein Metall ist, das in der elektrolytischen Spannungsreihe vor oder an gleicher Stelle steht wie das zu ätzende Metall. Bei Anwendung derartiger Lösungen ist natürlich die Bildung irgendeines Niederschlages ausgeschlossen. So sollen also gemäß vorliegender Erfindung für die Ätzung von Druckplatten, beispielsweise aus Zink, Lösungen von Salzen, wie z. B. Magnesiurnchlorid, Calciumchlorid und auch Zinkchlorid oder auch deren Nitrate, oder für Aluminiumdruckplatten, z. B. Calcium-, Magnesiumchlorid und auch Aluminiumchlorid bzw. deren Nitrate, Verwendung finden.For achieving a completely pure metal base when etching the present invention proposes the use of suitable acids mixed with concentrated, highly viscous solutions of hygroscopic salts whose base is a metal that in the electrolytic series in front of or in the same place as that metal to be etched. Using such solutions, of course, the formation is any Precipitation excluded. So according to the present invention for the Etching of printing plates, for example made of zinc, solutions of salts, such as. B. Magnesium chloride, calcium chloride and also zinc chloride or their nitrates, or for aluminum printing plates, e.g. B. calcium, magnesium chloride and aluminum chloride or their nitrates, use.
Es ist nötig, diese Salze in konzentrierten Lösungen zur Anwendung zu bringen, da die konzentrierte Lösung eine hohe Viscosität besitzt, die ein Durchdringen des Ätzmittels durch die Kolloidschicht verhindert. Günstig in diesem Sinne wirkt außerdem die hygroskopische Eigenschaft der Salze, da sie ein OOuellen der Kolloidschicht während der Ätzung verhindert. Günstig wirkt in gleichem Sinne auch noch ein Zusatz von gerbend wirkenden Stoffen, wie Chromalaun oder Formalin, zur Ätzmischung.It is necessary to use these salts in concentrated solutions to bring, since the concentrated solution has a high viscosity that a penetration of the etchant prevented by the colloid layer. Acts favorably in this sense In addition, the hygroscopic property of the salts, since they source the colloid layer prevented during etching. An additive also works favorably in the same sense from substances with a tanning effect, such as chrome alum or formalin, to the etching mixture.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB160373D DE600318C (en) | 1932-06-09 | 1933-03-24 | Process for etching printing plates which are covered with a developed copy layer |
| FR755914D FR755914A (en) | 1932-06-09 | 1933-05-23 | Etching process with etching of printing plates covered with a developed sensitive layer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE755914X | 1932-06-09 | ||
| DEB160373D DE600318C (en) | 1932-06-09 | 1933-03-24 | Process for etching printing plates which are covered with a developed copy layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE600318C true DE600318C (en) | 1934-08-04 |
Family
ID=7004365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEB160373D Expired DE600318C (en) | 1932-06-09 | 1933-03-24 | Process for etching printing plates which are covered with a developed copy layer |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE600318C (en) |
| FR (1) | FR755914A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE749151C (en) * | 1939-02-11 | 1944-11-20 | Dr. Bekk & Kaulen, Chemische Fabrik GmbH, Loevenich (Kr. Köln) | Means for etching metallic gravure printing plates or rollers |
-
1933
- 1933-03-24 DE DEB160373D patent/DE600318C/en not_active Expired
- 1933-05-23 FR FR755914D patent/FR755914A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE749151C (en) * | 1939-02-11 | 1944-11-20 | Dr. Bekk & Kaulen, Chemische Fabrik GmbH, Loevenich (Kr. Köln) | Means for etching metallic gravure printing plates or rollers |
Also Published As
| Publication number | Publication date |
|---|---|
| FR755914A (en) | 1933-12-01 |
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