WO2008012860A1 - An engobe for the fashioning of ceramic and earthenware articles and a method of application - Google Patents

An engobe for the fashioning of ceramic and earthenware articles and a method of application Download PDF

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Publication number
WO2008012860A1
WO2008012860A1 PCT/IT2007/000527 IT2007000527W WO2008012860A1 WO 2008012860 A1 WO2008012860 A1 WO 2008012860A1 IT 2007000527 W IT2007000527 W IT 2007000527W WO 2008012860 A1 WO2008012860 A1 WO 2008012860A1
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WO
WIPO (PCT)
Prior art keywords
engobe
article
ceramic
earthenware
application
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.)
Ceased
Application number
PCT/IT2007/000527
Other languages
French (fr)
Inventor
Domenico IERINÒ
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP07805739A priority Critical patent/EP2049454B1/en
Priority to AT07805739T priority patent/ATE501099T1/en
Priority to DE602007013055T priority patent/DE602007013055D1/en
Publication of WO2008012860A1 publication Critical patent/WO2008012860A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/459—Temporary coatings or impregnations
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials

Definitions

  • the present invention regards an engobe and a method of application for fashioning ceramic and earthenware articles, in order to create a covering, which allows one to obtain, by baking in an oven at between 900° C and 960° C, an ageing of the article of the archaeological type.
  • the material in particles, preferably mineral or glass powder is blown directly onto the article after having heated the resin.
  • the method is used for the production of vases and creates a finishing layer on the ceramic article that appears antique.
  • Another method is described in the request for a patent WOOOO 1774, in which a composite powder covering comprises a film constituted by a polymeric component with a thickness of between 25 and 70 microns, and with said composite incorporates an additive component to create an antique-type finishing layer.
  • This method also uses components that are not of the same nature as the ceramic or the earthenware and are distinguishable to the naked eye.
  • the coverings created both with the method DE 4037650 and with the method WOOOO 1774, which want to seem antique, are barely credible in that the antique- type coverings that they create, being of real resin or with a polymeric component, are different to the material of which the article is constituted.
  • the engobe object of the present invention has never existed before, nor has it been used by others.
  • the engobe object of the present invention allows one to obtain, by baking in a kiln at between 900° C and 960° C, a particular ageing, of the archaeological type, of the article.
  • the engobe object of the present invention the result of continuous trials and retrials over numerous years, consists in the formation of the paste of the slip with components that have never been assembled by others.
  • the engobe that has been created comes from a sapient dosing of clay, sand and fine granules, preferably of mortar, and marble dust.
  • the singularity of the engobe object of the present invention consists of the various and ordered passages for the phases of working that constitute the method of application of the engobe.
  • the engobe object of the present invention is constituted by marble dust, clay diluted in water, sand and fine granules, preferably of mortar.
  • the method of application of an engobe on an article produced by any method, for example on a wheel or by a mould, and dried, is the following: the engobe, constituted by marble dust, clay diluted in water, fine-grained sand, preferably from mortar, is applied, preferably by hand, onto the article.
  • the engobed article is placed in a dryer where a first phase of desiccation takes place in such a way as to not allow the article time to absorb the water contained in the engobe paste.
  • the article is baked in a kiln for ceramics at a temperature of between 900° C and 960° C.
  • the article is placed in a covered area and dried to age the engobe.
  • ageing of the engobe one means the natural and spontaneous falling away of the engobe itself in the range of 60/80 days.
  • the ageing time varies according to the temperature and the humidity in the air during the year.
  • a second engobe of a paste with marble dust, clay diluted in water and fine-grained sand, preferably from mortar, is applied to the article, always preferably by hand, and after the first engobe and the first desiccation.
  • the engobed article is placed in the dryer for the second time, and where a second phase of desiccation takes place.
  • the desiccation is carried out in such a way as to not allow the article the time to absorb the water contained in the paste of the engobe. In this way one avoids the breaking of the article itself.
  • the article is baked in a kiln at a temperature of between 900° C and 960° C. At the end of baking the article is placed in a covered area and dried for the ageing of the engobe.
  • ageing of the engobe one means the natural and spontaneous falling away of the engobe itself in the range of 60/80 days.
  • the ageing time varies according to the temperature and the humidity in the air during the year. Once the engobe has fallen away, the article is washed by a jet of high-pressured water and allowed to dry. At this point the article is finished.
  • the discovery it should be noted, is not limited to the description given, but may be perfected and modified by men skilled in the art without, however, exceeding the limits of patent.
  • the present invention allows numerous advantages and to overcome difficulties that could not be overcome with the systems on sale at present.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Finishing Walls (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Glass Compositions (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Catalysts (AREA)
  • Chemically Coating (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

An engobe for working ceramic and earthenware articles constituted by marble dust, clay diluted in water and fine-grained sand and a method of application of an engobe onto a ceramic and earthenware wherein on an article a first engobe is applied, said engobed article is placed in a dryer where a first phase of desiccation takes place, the article is baked in a ceramics kiln at a temperature of between 900° C and 960° C, at the end of baking the article is placed in a covered area and dried to age the engobe for 60/80 days, for the natural and spontaneous falling away of the engobe.

Description

AN ENGOBE FOR THE FASHIONING OF CERAMIC AND EARTHENWARE ARTICLES AND A METHOD OF APPLICATION
Field of the Technique
The present invention regards an engobe and a method of application for fashioning ceramic and earthenware articles, in order to create a covering, which allows one to obtain, by baking in an oven at between 900° C and 960° C, an ageing of the article of the archaeological type.
State of the Technique
The method of covering ceramic or earthenware articles with a layer of material to give said articles an antique look has been used by diverse makers: the patent DE 4037650 describes a method for the application of a synthetic resin onto the surface of a ceramic article.
The material in particles, preferably mineral or glass powder is blown directly onto the article after having heated the resin. The method is used for the production of vases and creates a finishing layer on the ceramic article that appears antique. Another method is described in the request for a patent WOOOO 1774, in which a composite powder covering comprises a film constituted by a polymeric component with a thickness of between 25 and 70 microns, and with said composite incorporates an additive component to create an antique-type finishing layer.
This method also uses components that are not of the same nature as the ceramic or the earthenware and are distinguishable to the naked eye. In this way the coverings created both with the method DE 4037650 and with the method WOOOO 1774, which want to seem antique, are barely credible in that the antique- type coverings that they create, being of real resin or with a polymeric component, are different to the material of which the article is constituted.
A Description of the Invention
In the working of ceramics and earthenware the engobe method, which allows one to cover the object with a paste of clay mixed with other elements, has always existed.
The engobe object of the present invention has never existed before, nor has it been used by others.
The engobe object of the present invention allows one to obtain, by baking in a kiln at between 900° C and 960° C, a particular ageing, of the archaeological type, of the article. The engobe object of the present invention, the result of continuous trials and retrials over numerous years, consists in the formation of the paste of the slip with components that have never been assembled by others.
The engobe that has been created comes from a sapient dosing of clay, sand and fine granules, preferably of mortar, and marble dust.
The marble dust, with a baking procedure at 940° C, has never been used by any artisan in the ceramics sector nor is there any trace in any of the teachings of the Ceramics Schools.
Furthermore, the singularity of the engobe object of the present invention consists of the various and ordered passages for the phases of working that constitute the method of application of the engobe.
A detailed description of a method of creating the invention
The engobe object of the present invention is constituted by marble dust, clay diluted in water, sand and fine granules, preferably of mortar. The method of application of an engobe on an article produced by any method, for example on a wheel or by a mould, and dried, is the following: the engobe, constituted by marble dust, clay diluted in water, fine-grained sand, preferably from mortar, is applied, preferably by hand, onto the article.
The engobed article is placed in a dryer where a first phase of desiccation takes place in such a way as to not allow the article time to absorb the water contained in the engobe paste. The article is baked in a kiln for ceramics at a temperature of between 900° C and 960° C.
At the end of the baking the article is placed in a covered area and dried to age the engobe. By ageing of the engobe, one means the natural and spontaneous falling away of the engobe itself in the range of 60/80 days. The ageing time varies according to the temperature and the humidity in the air during the year. For a better result a second engobe of a paste with marble dust, clay diluted in water and fine-grained sand, preferably from mortar, is applied to the article, always preferably by hand, and after the first engobe and the first desiccation. The engobed article is placed in the dryer for the second time, and where a second phase of desiccation takes place. The desiccation is carried out in such a way as to not allow the article the time to absorb the water contained in the paste of the engobe. In this way one avoids the breaking of the article itself. The article is baked in a kiln at a temperature of between 900° C and 960° C. At the end of baking the article is placed in a covered area and dried for the ageing of the engobe. By ageing of the engobe, one means the natural and spontaneous falling away of the engobe itself in the range of 60/80 days. The ageing time varies according to the temperature and the humidity in the air during the year. Once the engobe has fallen away, the article is washed by a jet of high-pressured water and allowed to dry. At this point the article is finished. The discovery, it should be noted, is not limited to the description given, but may be perfected and modified by men skilled in the art without, however, exceeding the limits of patent.
The present invention allows numerous advantages and to overcome difficulties that could not be overcome with the systems on sale at present.

Claims

1. An engobe for working ceramic and earthenware articles characterised by the fact that it is constituted by marble dust, clay diluted in water and finegrained sand.
2. An engobe for working ceramic and earthenware articles according to claim 1, characterised by the fact that the fine-grained sand is mortar sand.
3. A method of application of an engobe onto a ceramic and earthenware article according to any of the preceding claims, characterised by the fact that on said article a first engobe is applied, and that said engobed article is placed in a dryer where a first phase of desiccation takes place, that the article is baked in a ceramics kiln at a temperature of between 900° C and 960° C, that at the end of baking the article is placed in a covered area and dried to age the engobe for 60/80 days, for the natural and spontaneous falling away of the engobe.
4. A method of application of an engobe onto a ceramic or earthenware article according to claim 2, characterised by the fact that after the first engobe and the first desiccation a second engobe is applied to the article and a second phase of desiccation in a dryer is carried out.
5. A method of applying an engobe to a ceramic or earthenware article, according to claims 1 or 2, characterised by the fact that both the first and the second engobe are applied by hand.
PCT/IT2007/000527 2006-07-28 2007-07-26 An engobe for the fashioning of ceramic and earthenware articles and a method of application Ceased WO2008012860A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07805739A EP2049454B1 (en) 2006-07-28 2007-07-26 An engobe for the fashioning of ceramic and earthenware articles and a method of application
AT07805739T ATE501099T1 (en) 2006-07-28 2007-07-26 ENGOBE FOR THE PROCESSING OF CERAMIC AND POTTERY AND APPLICATION PROCESSES
DE602007013055T DE602007013055D1 (en) 2006-07-28 2007-07-26 ENGOBE FOR THE MANUFACTURE OF CERAMIC AND PURCHASES AND APPLICATION METHOD

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITCZ2006A000020 2006-07-28
IT000020A ITCZ20060020A1 (en) 2006-07-28 2006-07-28 INGOBBIO FOR PROCESSING CERAMIC AND TERRACOTTA ARTICLES AND APPLICATION METHOD

Publications (1)

Publication Number Publication Date
WO2008012860A1 true WO2008012860A1 (en) 2008-01-31

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ID=38664623

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2007/000527 Ceased WO2008012860A1 (en) 2006-07-28 2007-07-26 An engobe for the fashioning of ceramic and earthenware articles and a method of application

Country Status (6)

Country Link
EP (1) EP2049454B1 (en)
AT (1) ATE501099T1 (en)
DE (1) DE602007013055D1 (en)
ES (1) ES2361444T3 (en)
IT (1) ITCZ20060020A1 (en)
WO (1) WO2008012860A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2413705C2 (en) * 2009-03-04 2011-03-10 Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" Ceramic engobe
RU2494071C1 (en) * 2012-06-14 2013-09-27 Юлия Алексеевна Щепочкина Engobe
RU2497776C1 (en) * 2012-07-03 2013-11-10 Юлия Алексеевна Щепочкина Engobe

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2484043C1 (en) * 2012-01-25 2013-06-10 Юлия Алексеевна Щепочкина Engobe
RU2494070C1 (en) * 2012-06-14 2013-09-27 Юлия Алексеевна Щепочкина Engobe
RU2494081C1 (en) * 2012-07-03 2013-09-27 Юлия Алексеевна Щепочкина Engobe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060531A (en) * 1973-09-29 1975-05-24
DE4037650A1 (en) * 1990-11-27 1992-06-04 Hoerter Gmbh Coating ceramic object - by resin coating, heating and applying particles esp. of mineral or glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5060531A (en) * 1973-09-29 1975-05-24
DE4037650A1 (en) * 1990-11-27 1992-06-04 Hoerter Gmbh Coating ceramic object - by resin coating, heating and applying particles esp. of mineral or glass

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 197547, Derwent World Patents Index; AN 1975-77751W, XP002458788 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2413705C2 (en) * 2009-03-04 2011-03-10 Государственное образовательное учреждение высшего профессионального образования "Южно-Российский государственный технический университет (Новочеркасский политехнический институт)" Ceramic engobe
RU2494071C1 (en) * 2012-06-14 2013-09-27 Юлия Алексеевна Щепочкина Engobe
RU2497776C1 (en) * 2012-07-03 2013-11-10 Юлия Алексеевна Щепочкина Engobe

Also Published As

Publication number Publication date
EP2049454A1 (en) 2009-04-22
ITCZ20060020A1 (en) 2008-01-29
DE602007013055D1 (en) 2011-04-21
EP2049454B1 (en) 2011-03-09
ATE501099T1 (en) 2011-03-15
ES2361444T3 (en) 2011-06-17

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