WO2021066766A1 - Coating the natural stone with glaze and the service presentation articles obtained by this method - Google Patents
Coating the natural stone with glaze and the service presentation articles obtained by this method Download PDFInfo
- Publication number
- WO2021066766A1 WO2021066766A1 PCT/TR2019/051038 TR2019051038W WO2021066766A1 WO 2021066766 A1 WO2021066766 A1 WO 2021066766A1 TR 2019051038 W TR2019051038 W TR 2019051038W WO 2021066766 A1 WO2021066766 A1 WO 2021066766A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- natural stone
- service
- glaze
- furnace
- products
- Prior art date
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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
- C04B41/009—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
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5022—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with vitreous materials
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00965—Uses not provided for elsewhere in C04B2111/00 for household applications, e.g. use of materials as cooking ware
Definitions
- This invention relates to a service article made of a natural stone used in areas requiring service, to serve food to the end user, and a method of producing this service article.
- Ceramic goes through 4 different production phases and becomes a product. All porcelain products go through dough preparation, forming and firing processes, respectively.
- Dough preparation process includes the following steps:
- Clay, kaolin, quartz, K-feldspat, calcite, dolomite are used as raw materials and these high quality raw materials are supplied from the supplier.
- the sludge which is mixed in certain proportions according to the product to be formed is processed separately according to different forming methods.
- Granules are used in spray dryer for forming with isostaticpress method.
- - Cast slip is prepared for forming by casting method.
- - Transparent and coloured glazes to be used in the glazing process are prepared.
- Forming is divided into 3 parts as plastic forming, casting forming and press forming. These parts are as follows:
- Plastic Forming (wheel) Products such as cups, pots, plates, bowls, salt shakers, sugar bowls, soup bowls, cookers, mustard pots, toothpicks, egg pots, etc. can be made with plastic forming method.
- biscuit firing is performed at 1000°C in average after 15-17 hours. Products which completed biscuit firing become ready for glazing.
- Products underwent biscuit firing are glazed by Dip glazing method with the glaze prepared in the dough preparation part.
- glazing is performed by automatic dipping and in the bands by hand dip glazing.
- plates; in minor machines, bowls; and by hand glazing, platters, cups, pots etc. products are glazed.
- Glazed firing method All glazed products are first wiped and loaded into the furnace to prevent the products from sticking to the furnace plates. Glazed firing is performed in a reductive environment at 6-50 hours at 1350°C- 1370°C.
- Natural stone is one of the oldest construction materials known and used by people, as well as it is used in architecture and art and most of the articles we use in daily life.
- the standard firing method described above for ceramic and porcelain products is not suitable for natural stones, due to the structure of the stone, it causes cracking, disintegration and similar problems.
- Natural stones are Metamorphic rocks. Due to its porous structure, it cannot be used in food applications such as food service. Although ceramic and porcelain products constitute the state of the art, the firing and glazing methods used for ceramic and porcelain cannot be used due to the structure related to the use of natural stones in this field.
- the glazing process of natural stones after firing is important and a layer should be formed on the porous structure.
- the glazing method described in the prior art is not suitable for natural stones and in the glazing performed at the above mentioned values, the glazing layer does not provide a stone connection.
- the present invention relates to a natural stone service article used in areas requiring service for serving food to the end user, developed to eliminate the above-mentioned disadvantages and to provide new advantages to the technical field and a method of producing this service article.
- the object of the invention is to provide a method of manufacture which enables the firing of natural stones to overcome the aforementioned problems while applying the standard firing process of ceramic and porcelain products to natural stones.
- the object of the invention is to use the Engop (Priming) technique during the glazing process and to provide the coverage of the Pinhole holes formed on the natural stone by firing the product 3rd time, to eliminate the porous structure and to cover the entire surface with the glaze by providing full integration (association) with the natural stone. In this way, it fully overcomes both the disadvantages posed to the user by the porous structure and the above-mentioned disadvantages during the manufacturing process.
- Another object of the invention is to enable overglaze and underglaze decoration of the coating on the product.
- Natural stones are taken in blocks and then cut according to the rough dimensions of the products.
- the stones which are cut according to the rough dimensions are shaped in wheel machines and cutting tools according to the form of the product.
- the stones shaped according to their dimensions are taken from the wheel machine and waited for 1 day to discard the water therein.
- the products coming out of the furnace are coated with glaze (Coloured Paint) and proceed to the 2 nd furnace step. It is fired in the furnace at any temperature within the range of 950°C to 1180°C, preferably at 1180°C. This process provides natural stone and glaze adhere to each other.
- glaze Cold Paint
- Overglaze and/or underglaze decoration process is applied to the product which underwent glazing process and the product takes its final form.
Abstract
This invention relates to a service article made of a natural stone used in areas requiring service, to serve food to the end user, and a method of producing this service article.
Description
COATING THE NATURAL STONE WITH GLAZE AND THE SERVICE PRESENTATION ARTICLES OBTAINED BY THIS
METHOD TECHNICAL FIELD
This invention relates to a service article made of a natural stone used in areas requiring service, to serve food to the end user, and a method of producing this service article.
STATE OF THE ART The production steps of a service article (plates, glasses, cups, trays, etc.) made of ceramic material and service articles made of ceramic material are the most widely known methods and products.
Ceramic (porcelain) goes through 4 different production phases and becomes a product. All porcelain products go through dough preparation, forming and firing processes, respectively.
Dough preparation process includes the following steps:
- Clay, kaolin, quartz, K-feldspat, calcite, dolomite are used as raw materials and these high quality raw materials are supplied from the supplier. - The sludge which is mixed in certain proportions according to the product to be formed is processed separately according to different forming methods.
- Granules are used in spray dryer for forming with isostaticpress method.
- Coil is prepared in vacuum press for plastic forming.
- Cast slip is prepared for forming by casting method. - Transparent and coloured glazes to be used in the glazing process are prepared.
Forming is divided into 3 parts as plastic forming, casting forming and press forming. These parts are as follows:
1- Plastic Forming (wheel) - Products such as cups, pots, plates, bowls, salt shakers, sugar bowls, soup bowls, cookers, mustard pots, toothpicks, egg pots, etc. can be made with plastic forming method.
2- Casting Forming - Platters, ovenware, amorphous products etc. are formed by pressure casting method.
- Salt and pepper shakers, toothpicks, sauce pots, soup bowls, teapots, teapot and soup bowl lids are produced with the empty casting forming method.
- Products such as spoons, some oval plates, trinkets, etc. are produced by filled casting forming method.
3- Press forming; with isostatic press forming method for round plate, oval plate, hollow plate, platter and bowl can be produced. Most of the production is performed by this method.
Firing process is as follows:
BISCUIT FIRING
In order to have a certain strength and water absorption capacity of the products formed in the forming part before glazing, biscuit firing is performed at 1000°C in average after 15-17 hours. Products which completed biscuit firing become ready for glazing.
Glazing process:
Products underwent biscuit firing are glazed by Dip glazing method with the glaze prepared in the dough preparation part. In triplex and minor machines, glazing is performed by automatic dipping and in the bands by hand dip glazing. In triplex machines, plates; in minor machines, bowls; and by hand glazing, platters, cups, pots etc. products are glazed.
Glazed firing method: All glazed products are first wiped and loaded into the furnace to prevent the products from sticking to the furnace plates. Glazed firing is performed in a reductive environment at 6-50 hours at 1350°C- 1370°C.
Natural stone is one of the oldest construction materials known and used by people, as well as it is used in architecture and art and most of the articles we use in daily life.
The standard firing method described above for ceramic and porcelain products is not suitable for natural stones, due to the structure of the stone, it causes cracking, disintegration and similar problems.
Natural stones are Metamorphic rocks. Due to its porous structure, it cannot be used in food applications such as food service. Although ceramic and porcelain products constitute the state of the art, the firing and glazing methods used for ceramic and porcelain cannot be used due to the structure related to the use of natural stones in this field.
Because of their porous structure, natural stones show changes in their structure that water or food material penetrate into their pores when used in articles such as service articles (plates, cups, containers, trays, etc.) used in the transport and presentation of food.
Therefore, the glazing process of natural stones after firing is important and a layer should be formed on the porous structure. Also, the glazing method described in the prior art is not suitable for natural stones and in the glazing performed at the above mentioned values, the glazing layer does not provide a stone connection.
For natural stones, the degree of furnace is important in the glazing process and due to the porous structure of the natural stone, the glaze cannot cover the entire surface and the glaze applied surface does not appear as rigid. In addition, holes are formed on the natural stones during this process which are called pinholes.
DESCRIPTION OF THE INVENTION
The present invention relates to a natural stone service article used in areas requiring service for serving food to the end user, developed to eliminate the above-mentioned disadvantages and to provide new advantages to the technical field and a method of producing this service article.
The object of the invention is to provide a method of manufacture which enables the firing of natural stones to overcome the aforementioned problems while applying the standard firing process of ceramic and porcelain products to natural stones.
The object of the invention is to use the Engop (Priming) technique during the glazing process and to provide the coverage of the Pinhole holes formed on the natural stone by firing the product 3rd time, to eliminate the porous structure and to cover the entire surface with the glaze by providing full integration (association) with the natural stone. In this way, it fully overcomes both the disadvantages posed to the user by the porous structure and the above-mentioned disadvantages during the manufacturing process.
Another object of the invention is to enable overglaze and underglaze decoration of the coating on the product.
DETAILED DESCRIPTION OF THE INVENTION
In this detailed description, preferred alternatives of the embodiment according to the invention are explained only for a better understanding of the subject matter without a limiting effect. Natural stones are taken in blocks and then cut according to the rough dimensions of the products. The stones which are cut according to the rough dimensions are shaped in wheel machines and cutting tools according to the form of the product.
The stones shaped according to their dimensions are taken from the wheel machine and waited for 1 day to discard the water therein.
In the 1st step, stones that have discarded the water in them are fired at 800°C in the 1st furnace (Biscuit).
The products coming out of the furnace are coated with glaze (Coloured Paint) and proceed to the 2nd furnace step. It is fired in the furnace at any temperature within the range of 950°C to 1180°C, preferably at 1180°C. This process provides natural stone and glaze adhere to each other.
If the products coming out of the 2nd furnace have Pinhole holes mentioned in the prior art, the product enters a 3rd firing process. Here, priming process called Engop is applied to the holes.
Overglaze and/or underglaze decoration process is applied to the product which underwent glazing process and the product takes its final form.
Claims
1- The present invention relates to a method of manufacturing a natural stone service article used in areas requiring service to serve food to the end user, characterized in that; it includes steps of - Taking natural stones as blocks and then cutting the products according to their rough dimensions,
- Forming stones which are cut according to rough dimensions in wheel machines and cutting tools according to the form of the product, - Taking the stones shaped according to their dimensions from the wheel machines and waiting for 1 day to discard the water therein,
- Firing the stones that have discarded the water in them in the 1st furnace (Biscuit) at 800°C, - Coating the products coming out of the furnace with the prepared glaze,
- Firing the products coated with glaze at minimum 950°C and maximum 1180°C in the 2nd furnace.
2- The present invention relates to a method of producing a natural stone service article used in areas requiring service to serve food to the end user according to claim 1, characterized in that; it includes the steps of
- Applying a 3rd firing process for Pinhole holes formed on the products coming out of the 2nd furnace,
- The application of priming process called Engop to the holes.
3- The present invention relates to a method of producing a natural stone service article used in areas requiring service to serve food to the end user according to claim 1, characterized in that; it includes the step of applying the overglaze and/or underglaze decoration to the product resulting from the glazing process.
4- The present invention is a product made by a method of producing a natural stone service article used in areas requiring service to serve food to the end user according to claim 1 , characterized in that; it is a food service article made of natural stone which is coated with glaze in order to eliminate its porous structure and decorated with overglaze and/or underglaze decoration.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TR201914973 | 2019-10-01 | ||
| TR2019/14973 | 2019-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021066766A1 true WO2021066766A1 (en) | 2021-04-08 |
Family
ID=75337376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/TR2019/051038 WO2021066766A1 (en) | 2019-10-01 | 2019-12-06 | Coating the natural stone with glaze and the service presentation articles obtained by this method |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2021066766A1 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200307351Y1 (en) * | 2002-12-09 | 2003-03-15 | 양윤수 | Basaltic roast plate treated with heat |
| US20160230396A1 (en) * | 2015-02-06 | 2016-08-11 | Joseph F. DeLorenzo | Process for Production of Glazed, High Density Engineered Surface Products and Products Thereof |
| KR101982133B1 (en) * | 2018-02-06 | 2019-05-24 | 한선진 | Method for manufacturing a roast plate including volcanic stone |
-
2019
- 2019-12-06 WO PCT/TR2019/051038 patent/WO2021066766A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR200307351Y1 (en) * | 2002-12-09 | 2003-03-15 | 양윤수 | Basaltic roast plate treated with heat |
| US20160230396A1 (en) * | 2015-02-06 | 2016-08-11 | Joseph F. DeLorenzo | Process for Production of Glazed, High Density Engineered Surface Products and Products Thereof |
| KR101982133B1 (en) * | 2018-02-06 | 2019-05-24 | 한선진 | Method for manufacturing a roast plate including volcanic stone |
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