DE1217735B - Process for decorative enamelling of large-format cast or sheet steel parts - Google Patents

Process for decorative enamelling of large-format cast or sheet steel parts

Info

Publication number
DE1217735B
DE1217735B DEB72338A DEB0072338A DE1217735B DE 1217735 B DE1217735 B DE 1217735B DE B72338 A DEB72338 A DE B72338A DE B0072338 A DEB0072338 A DE B0072338A DE 1217735 B DE1217735 B DE 1217735B
Authority
DE
Germany
Prior art keywords
enamel
decorative
cast
enamelling
cover
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.)
Pending
Application number
DEB72338A
Other languages
German (de)
Inventor
Dipl-Chem Hans Moehring
Otto Dietrich
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.)
Burger Eisenwerke AG
Original Assignee
Burger Eisenwerke AG
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
Priority to NL265633D priority Critical patent/NL265633A/xx
Priority to DEB61242A priority patent/DE1212818B/en
Priority to CH633061A priority patent/CH414305A/en
Priority to FR865573A priority patent/FR1292684A/en
Priority to CH69562A priority patent/CH427450A/en
Priority to GB352162A priority patent/GB989466A/en
Priority to SE125762A priority patent/SE301409B/xx
Priority to DEB72338A priority patent/DE1217735B/en
Application filed by Burger Eisenwerke AG filed Critical Burger Eisenwerke AG
Priority to AT199964A priority patent/AT258080B/en
Priority to CH316264A priority patent/CH451642A/en
Priority to FR968291A priority patent/FR85489E/en
Priority to BE645567D priority patent/BE645567A/xx
Priority to SE396664A priority patent/SE307715B/xx
Priority to NL6403772A priority patent/NL6403772A/xx
Priority to DK226164A priority patent/DK104386C/en
Priority to GB2351164A priority patent/GB1058610A/en
Priority to DEB78401A priority patent/DE1217736B/en
Priority to DEB80270A priority patent/DE1217737B/en
Priority to CH838365A priority patent/CH454567A/en
Priority to BE666502D priority patent/BE666502A/xx
Priority to FR24658A priority patent/FR88562E/en
Priority to GB3364865A priority patent/GB1094407A/en
Priority to SE1037565A priority patent/SE302070B/xx
Priority to DK414365A priority patent/DK112216B/en
Priority to NL6511007A priority patent/NL6511007A/xx
Priority to DK454965A priority patent/DK118053B/en
Priority to DE19651521614 priority patent/DE1521614A1/en
Priority to NL6516203A priority patent/NL6516203A/xx
Priority to SE1628865A priority patent/SE320248B/xx
Priority to BE674172D priority patent/BE674172A/xx
Priority to CH1788665A priority patent/CH441930A/en
Priority to FR45589A priority patent/FR90020E/en
Priority to GB319166A priority patent/GB1085043A/en
Priority to DK39966A priority patent/DK116913B/en
Publication of DE1217735B publication Critical patent/DE1217735B/en
Pending legal-status Critical Current

Links

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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers
    • C23D5/06—Coating with enamels or vitreous layers producing designs or letters
    • 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
    • C23D—ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS
    • C23D5/00—Coating with enamels or vitreous layers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Decoration By Transfer Pictures (AREA)
  • Moulding By Coating Moulds (AREA)

Description

BUNDESREPUBLIK DEUTSCHLAND DEUTSCHES #Ä PATENTAMT Int. α.: FEDERAL REPUBLIC OF GERMANY GERMAN PATENT OFFICE Int. α .:

C23dC23d

AUSLEGESCHRIFTEDITORIAL

Deutsche Kl.: 48 c - S/06German class: 48 c - S / 06

Nummer:
Aktenzeichen:
Anmeldetag:
Auslegetag:Number:
File number:
Registration date:
Display day:

1217 735
B72338VIb/48c
19. Juni 1963
26. Mai 19661217 735
B72338VIb / 48c
June 19, 1963
May 26, 1966

Die Erfindung betrifft eine Weiterentwicklung des Verfahrens zur Dekoremaillierung gemäß der Patentanmeldung B 61242 VIb/48 c (deutsche Auslegeschrift 1212 818). Nach diesem Verfahren wird das gewünschte Muster mit Schmelzfarben auf eine Kunstharzfolie gedruckt und auf das bereits mit einer Trägeremaillierschicht versehene Geräteteil aufgebracht. Beim Dekorbrand verdampft die Folie rückstandslos, während das Schmelzfarbendekor in die Trägeremaillierschicht eingebrannt wird. Da die Trägeremaillierschicht üblicherweise aus dem nacheinander eingebrannten Grundemail und Deckemail besteht, sind somit insgesamt drei Brennvorgänge zur Dekoremaillierung notwendig.The invention relates to a further development of the method for decorative enamelling according to the patent application B 61242 VIb / 48 c (German document 1212 818). After this procedure, the desired pattern printed with enamel colors on a synthetic resin film and on the already with a Applied device part provided with a carrier enamel layer. When the decor is fired, the film evaporates without leaving any residue, while the enamel color decoration is burned into the carrier enamel layer. Since the Carrier enamel layer usually made up of the base enamel and the top enamel that are fired one after the other exists, a total of three firing processes are necessary for decorative enameling.

Aufgabe der Erfindung ist es, die durch den dreimaligen Brand verhältnismäßig hohen Kosten zu vermindern und gleichzeitig das Verfahren weiter zu verbessern. Erfindungsgemäß wird hierzu vorgeschlagen, eine mit einem Deckemail und Schmelzfarbe oder nur mit Deckemail bedruckte Folie auf das lediglich mit einem Grundemail versehene Guß- oder Blechteil aufzubringen. Durch den anschließenden Brand entsteht eine das dunkelgetönte Grundemail dekorierende Emailschicht. Mit lediglich zwei Brennvorgängen erreicht man somit dasselbe Endergebnis. Da die durch den Wegfall des dritten Brandes eingesparten Kosten weit größer sind als die etwas erhöhten Druckkosten für die Folie, wird das gesamte Verfahren wesentlich billiger.The object of the invention is to reduce the relatively high costs caused by the three fires and at the same time to further improve the process. According to the invention it is proposed for this purpose, a foil printed with a cover enamel and enamel or only with cover enamel on the only with to apply a cast or sheet metal part provided with a base enamel. The subsequent fire creates an enamel layer decorating the dark-tinted base enamel. Achieved with just two burns one thus the same end result. Because the costs saved by eliminating the third fire are far greater than the somewhat increased printing costs for the foil, the entire process becomes essential cheaper.

Da die wesentlichen Eigenschaften des Emails von der Schichtstärke abhängig sind, ist mit der möglichen dünneren und gleichmäßigeren Emailauflage nach dem erfindungsgemäßen Verfahren eine wesentliche Verbesserung der Gebrauchstüchtigkeit des Emailüberzuges gegeben. Außerdem kann Email eingespart werden.Since the essential properties of the enamel depend on the layer thickness, it is possible to use thinner and more uniform enamel layer after the method according to the invention an essential Improvement of the usability of the enamel coating given. Email can also be saved will.

Um eine dekorative Wirkung zu erzielen, ist es zweckmäßig, die Kunstharzfolie mit mindestens einer das eigentliche Muster darstellenden Dekorfarbe und einem die Zwischenräume lückenlos ausfüllenden vorzugsweise andersfarbigen Deckemail, welches die dunkel getönte Grundemailschicht vollständig bedeckt, zu bedrucken. Die Dekorfarbe kann dabei auch in eine geschlossene Deckemailschicht eingebettet sein. Es ist aber auch möglich, eine Dekoration lediglich durch Deckemail zu erzielen, indem das Grundemail nicht vollständig abgedeckt wird.In order to achieve a decorative effect, it is useful to have the synthetic resin film with at least one the actual pattern representing the decorative color and one that completely fills the gaps preferably a different colored cover enamel, which completely covers the dark tinted base enamel layer, to be printed. The decorative color can also be embedded in a closed cover enamel layer be. However, it is also possible to achieve a decoration only with cover enamel by adding the Basic enamel is not completely covered.

Als Deckemail kann ein reines Email, d. h. nur ein Glaspulver mit Färb- und Trübungsmitteln, benutzt werden. Die sonst üblichen Zusätze an Ton und Stellmitteln, welche den Emailschlicker in der Schwebe und damit spritzfähig halten, können bei Verfahren zur Dekoremaillierung von Guß- oder Stahlblechteilen großen FormatsThe cover email can be a pure email, i. H. only a glass powder with coloring and opacifying agents, used will. The usual additives of clay and thickening agents, which the enamel slip in the Keep floating and thus sprayable, can be used in processes for decorative enamelling of cast or Sheet steel parts of large format

Zusatz zur Anmeldung: B 61242 VI b/48 c —
Auslegeschrift 1 212 818Addition to registration: B 61242 VI b / 48 c -
Interpretation document 1 212 818

Anmelder:Applicant:

Burger Eisenwerke Aktiengesellschaft,Burger Eisenwerke Aktiengesellschaft,

Burg (Dillkreis)Castle (Dillkreis)

Als Erfinder benannt:
Dipl.-Chem. Hans Moehring,
Otto Dietrich, Burg (Dillkreis)Named as inventor:
Dipl.-Chem. Hans Moehring,
Otto Dietrich, Burg (Dillkreis)

dem Deckemail, mit welchem die Folie bedruckt wird, entfallen. Die oft negativen Einflüsse, welche z. B. auf den Schmelzpunkt oder den Glanz sowie die Glätte und Oberflächenspannung durch den Mühlenversatz auftreten können, sind somit nicht zu befürchten. the cover enamel, with which the film is printed, is omitted. The often negative influences, which z. B. on the melting point or the gloss as well as the smoothness and surface tension due to the mill offset can occur, are therefore not to be feared.

Bei dem erfindungsgemäßen Verfahren müssen die Deckschicht und das Grundemail genau aufeinander abgestimmt sein, wenn man größeren Ausschuß vermeiden will. Es hat sich herausgestellt, daß die Deckschicht eine wesentlich kleinere Oberflächenspannung haben muß als das Grundemail. Außerdem muß die Oberflächenspannung des Grundemails größer sein als die Summe aus Oberflächenspannung der Deckschicht und der Grenzflächenspannung zwischen Deckschicht und Grundemail.In the method according to the invention, the top layer and the base enamel must be exactly on top of one another be coordinated if you want to avoid larger committee. It has been found that the top layer must have a significantly lower surface tension than the basic enamel. In addition, the The surface tension of the base enamel must be greater than the sum of the surface tension of the top layer and the interfacial tension between the top layer and the base enamel.

Die Deckkraft des Deckemails bzw. der Schmelzfarbe ist direkt abhängig von ihrer Schichtstärke. Die kleinste stabile Schichtstärke der Schmelzfarbe hängt davon ab, wie groß der Randwinkel gegenüber dem Grundemail ist. Man muß also Farben wählen, die einen möglichst kleinen Randwinkel gegenüber dem Grundemail aufweisen, wenn man mit einer möglichst geringen Schmelzfarbenschicht eine einwandfreie Dekorierung erzielen will. Im Idealfall sollte der Randwinkel 0° betragen. Diese gewünschten Voraussetzungen werden unter den oben angegebenen Bedingungen über die Oberflächenspannung bzw.The opacity of the cover enamel or the enamel color is directly dependent on its layer thickness. the smallest stable layer thickness of the enamel color depends on how large the contact angle compared to the Basic email is. So you have to choose colors that have the smallest possible edge angle compared to the Have basic enamel if you have a flawless decoration with the smallest possible layer of enamel paint wants to achieve. Ideally, the edge angle should be 0 °. These desired conditions are determined under the conditions given above via the surface tension or

" " ' 609 570/288"" '609 570/288

Grenzflächenspannung von Grundemail und Deckschicht erreicht. . ■ . .Interfacial tension of base enamel and top layer reached. . ■. .

Nach denselben Gesichtspunkten muß man die Schmelzfarbe zum Deckemail abstimmen, um je nach Wunsch eine reliefartige Oberflächenbildung zu erzielen. Die Schmelzfarbe mit der geringeren Oberflächenspannung wird in das Deckemail reliefartig einsinken. ,.According to the same point of view, one must match the enamel color to the cover enamel, depending on the Desire to achieve a relief-like surface formation. The enamel color with the lower surface tension will sink into the cover enamel in relief. ,.

Es hat sich erwiesen, daß durch die relief artige Ausbildung der Emailschicht die Temperaturwechselbeständigkeit des Emails wesentlich verbessert ist. Insbesondere für Heiz- und Kochgeräte ist dies von außerordentlicher Bedeutung.It has been shown that the resistance to temperature changes due to the relief-like design of the enamel layer of the email is significantly improved. This is particularly true for heating and cooking appliances extraordinary importance.

Die additive Berechnung der Oberflächenspannung von Email ist heute ohne weiteres möglich, da die Faktoren für die einzelnen Bestandteile seit langem bekannt sind.The additive calculation of the surface tension of enamel is now easily possible because the Factors for the individual components have long been known.

Das· erfindungsgemäße Verfahren läßt sich sowohl für Guß- als auch Blechteile mit Erfolg anwenden und ist'für Öfen, Herde, Kühlschränke, Kochtöpfe u. dgl. sowie für Badewannen geeignet.The method according to the invention can be used successfully for both cast and sheet metal parts and is' for ovens, stoves, refrigerators, saucepans and the like as well as suitable for bathtubs.

Claims (2)

Patentansprüche:Patent claims: 1. Verfahren zur Dekoremaillierung von Gußoder Stahlblechteilen großen Formats, beispielsweise von Öfen und Herden, mittels einer mit einem Schmelzfarbendekor bedruckten Kunst-,harzfolie auf .Polyesterbasis nach der Patentanmeldung B 61242 VIb/48c (deutsche Auslegeschrift 1212818), dadurch gekennzeichnet, daß eine mit Deckemail und Schmelzfarbe oder nur mit Deckemail bedruckte Folie auf das mit einem Grundemail versehene Guß- oder Blechteil aufgebracht wird.1. Process for decorative enamelling of castor Sheet steel parts of large format, for example of ovens and stoves, by means of a a synthetic resin film printed on a polyester base, according to the patent application B 61242 VIb / 48c (German explanatory document 1212818), characterized in that a film printed with cover enamel and enamel or only with cover enamel the cast or sheet metal part provided with a base enamel is applied. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß für das aufzudruckende Deckemail eine Emailfritte ohne die üblichen Mühlenzusätze verwendet wird. 2. The method according to claim 1, characterized in that an enamel frit is used without the usual mill additives for the cover enamel to be printed.
DEB72338A 1961-02-11 1963-06-19 Process for decorative enamelling of large-format cast or sheet steel parts Pending DE1217735B (en)

Priority Applications (34)

Application Number Priority Date Filing Date Title
NL265633D NL265633A (en) 1961-02-11
DEB61242A DE1212818B (en) 1961-02-11 1961-02-11 Cast or sheet steel parts provided with a decoration and process for their production
CH633061A CH414305A (en) 1961-02-11 1961-05-31 Process for large-area decorative enamelling of household appliances, preferably ovens
FR865573A FR1292684A (en) 1961-02-11 1961-06-21 Process for decorative enamelling of large surfaces of household objects and, in particular, stoves
CH69562A CH427450A (en) 1961-02-11 1962-01-19 Household appliance with decorative enamelling, in particular an oven
GB352162A GB989466A (en) 1961-02-11 1962-01-30 Improvements in or relating to processes for the decorative enamelling of domestic appliances
SE125762A SE301409B (en) 1961-02-11 1962-02-05
DEB72338A DE1217735B (en) 1961-02-11 1963-06-19 Process for decorative enamelling of large-format cast or sheet steel parts
AT199964A AT258080B (en) 1963-06-19 1964-03-09 Process for the complete large-area decorative enameling of cast iron and sheet iron objects
CH316264A CH451642A (en) 1961-02-11 1964-03-11 Process for large-area decorative enameling of household appliances
FR968291A FR85489E (en) 1961-02-11 1964-03-23 Process for decorative enamelling of large surfaces of household objects and, in particular, stoves
BE645567D BE645567A (en) 1961-02-11 1964-03-23
SE396664A SE307715B (en) 1961-02-11 1964-04-01
NL6403772A NL6403772A (en) 1961-02-11 1964-04-08
DK226164A DK104386C (en) 1963-06-19 1964-05-05 Procedure for decorating enamelling of household utensils with large surfaces.
GB2351164A GB1058610A (en) 1961-02-11 1964-06-05 Process for the decorative enamelling of large surface areas of domestic appliances
DEB78401A DE1217736B (en) 1961-02-11 1964-09-04 Process for decorative enamelling of large-format cast or sheet steel parts
DEB80270A DE1217737B (en) 1961-02-11 1965-01-26 Process for decorative enamelling of large-format cast or sheet steel parts
CH838365A CH454567A (en) 1961-02-11 1965-06-15 Enamelling process
BE666502D BE666502A (en) 1961-02-11 1965-07-07
FR24658A FR88562E (en) 1961-02-11 1965-07-15 Process for decorative enameling of large surfaces of household objects and, in particular, of stoves
GB3364865A GB1094407A (en) 1961-02-11 1965-08-05 Improvements in or relating to enamelling processes
SE1037565A SE302070B (en) 1961-02-11 1965-08-09
DK414365A DK112216B (en) 1961-02-11 1965-08-12 Method for decorative enamelling of large surfaces on household items, preferably ovens.
NL6511007A NL6511007A (en) 1961-02-11 1965-08-23
DK454965A DK118053B (en) 1961-02-11 1965-09-03 Method for decorative enamelling of large surfaces on household items, preferably ovens.
DE19651521614 DE1521614A1 (en) 1961-02-11 1965-11-20 Process for single or multi-colored decorative enamelling of cast iron or sheet steel parts using a film
NL6516203A NL6516203A (en) 1961-02-11 1965-12-13
SE1628865A SE320248B (en) 1961-02-11 1965-12-16
BE674172D BE674172A (en) 1961-02-11 1965-12-22
CH1788665A CH441930A (en) 1961-02-11 1965-12-27 Process for decorative enamelling of household appliances
FR45589A FR90020E (en) 1961-02-11 1966-01-12 Process for decorative enameling of large surfaces of household objects and, in particular, of stoves
GB319166A GB1085043A (en) 1961-02-11 1966-01-24 Improvements in or relating to processes for the decorative enamelling of domestic appliances
DK39966A DK116913B (en) 1961-02-11 1966-01-25 Method for decorative enamelling of large surfaces on household items, preferably ovens.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEB61242A DE1212818B (en) 1961-02-11 1961-02-11 Cast or sheet steel parts provided with a decoration and process for their production
DEB72338A DE1217735B (en) 1961-02-11 1963-06-19 Process for decorative enamelling of large-format cast or sheet steel parts
DEB78401A DE1217736B (en) 1961-02-11 1964-09-04 Process for decorative enamelling of large-format cast or sheet steel parts
DEB80270A DE1217737B (en) 1961-02-11 1965-01-26 Process for decorative enamelling of large-format cast or sheet steel parts

Publications (1)

Publication Number Publication Date
DE1217735B true DE1217735B (en) 1966-05-26

Family

ID=27436600

Family Applications (4)

Application Number Title Priority Date Filing Date
DEB61242A Pending DE1212818B (en) 1961-02-11 1961-02-11 Cast or sheet steel parts provided with a decoration and process for their production
DEB72338A Pending DE1217735B (en) 1961-02-11 1963-06-19 Process for decorative enamelling of large-format cast or sheet steel parts
DEB78401A Pending DE1217736B (en) 1961-02-11 1964-09-04 Process for decorative enamelling of large-format cast or sheet steel parts
DEB80270A Pending DE1217737B (en) 1961-02-11 1965-01-26 Process for decorative enamelling of large-format cast or sheet steel parts

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DEB61242A Pending DE1212818B (en) 1961-02-11 1961-02-11 Cast or sheet steel parts provided with a decoration and process for their production

Family Applications After (2)

Application Number Title Priority Date Filing Date
DEB78401A Pending DE1217736B (en) 1961-02-11 1964-09-04 Process for decorative enamelling of large-format cast or sheet steel parts
DEB80270A Pending DE1217737B (en) 1961-02-11 1965-01-26 Process for decorative enamelling of large-format cast or sheet steel parts

Country Status (8)

Country Link
BE (3) BE645567A (en)
CH (5) CH414305A (en)
DE (4) DE1212818B (en)
DK (3) DK112216B (en)
FR (1) FR90020E (en)
GB (4) GB989466A (en)
NL (4) NL6403772A (en)
SE (4) SE301409B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634843C3 (en) * 1976-08-03 1981-11-19 Ferro Holland B.V., Rotterdam Process for decorating a metal object with the aid of decorative enamels
NO821301L (en) * 1981-05-05 1982-11-08 Bayer Ag ENAMELING SUSPENSION AND PROCEDURE FOR TWO AND MULTI-LAYER PAINTING IN A BURNING
GB2118928A (en) * 1982-04-21 1983-11-09 Geoffrey Cooke Enamelling process
RU2702529C1 (en) * 2018-06-25 2019-10-08 федеральное государственное бюджетное образовательное учреждение высшего образования "Костромской государственный университет" (КГУ) Method of producing relief painting enamel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB613732A (en) * 1946-06-28 1948-12-02 Johnson Matthey Co Ltd Improvements in and relating to the decoration of non-porous heat-resisting bases
DE920282C (en) * 1952-06-07 1954-11-18 Louis Vielhaber Process for the production of enamels, glazes, glasses, etc. like
US2835601A (en) * 1953-06-24 1958-05-20 Pemco Corp Production of ceramic ware
US2950209A (en) * 1958-04-02 1960-08-23 Du Pont Thermofluid vehicles

Also Published As

Publication number Publication date
DE1217737B (en) 1966-05-26
NL6403772A (en) 1964-12-21
DK112216B (en) 1968-11-18
DE1217736B (en) 1966-05-26
CH441930A (en) 1967-08-15
BE666502A (en) 1965-11-03
CH454567A (en) 1968-04-15
NL6516203A (en) 1966-07-27
BE674172A (en) 1966-04-15
CH414305A (en) 1966-05-31
SE307715B (en) 1969-01-13
NL265633A (en)
DK118053B (en) 1970-06-29
DK116913B (en) 1970-02-23
BE645567A (en) 1964-07-16
GB1094407A (en) 1967-12-13
CH427450A (en) 1966-12-31
CH451642A (en) 1968-05-15
GB1085043A (en) 1967-09-27
SE320248B (en) 1970-02-02
GB1058610A (en) 1967-02-15
FR90020E (en) 1967-09-29
SE301409B (en) 1968-06-04
DE1212818B (en) 1966-03-17
SE302070B (en) 1968-07-01
NL6511007A (en) 1966-03-07
GB989466A (en) 1965-04-22

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