AT394041B - Process for the treatment of porcelain patterns for producing articles by dipping - Google Patents

Process for the treatment of porcelain patterns for producing articles by dipping Download PDF

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Publication number
AT394041B
AT394041B AT0266988A AT266988A AT394041B AT 394041 B AT394041 B AT 394041B AT 0266988 A AT0266988 A AT 0266988A AT 266988 A AT266988 A AT 266988A AT 394041 B AT394041 B AT 394041B
Authority
AT
Austria
Prior art keywords
porcelain
molds
oxides
eroded
diving
Prior art date
Application number
AT0266988A
Other languages
German (de)
Other versions
ATA266988A (en
Inventor
Hansgeorg Ing Gruss
Original Assignee
Semperit 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
Application filed by Semperit Ag filed Critical Semperit Ag
Priority to AT0266988A priority Critical patent/AT394041B/en
Priority to DE4116250A priority patent/DE4116250C2/en
Publication of ATA266988A publication Critical patent/ATA266988A/en
Application granted granted Critical
Publication of AT394041B publication Critical patent/AT394041B/en

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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
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
    • B05D3/0218—Pretreatment, e.g. heating the substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/04—Apparatus or processes for treating or working the shaped or preshaped articles for coating or applying engobing layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/34—Component parts, details or accessories; Auxiliary operations
    • B29C41/38—Moulds, cores or other substrates
    • B29C41/40—Cores
    • 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
    • C04B41/46—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 organic materials
    • C04B41/48—Macromolecular compounds
    • C04B41/488—Other macromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds
    • 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
    • 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
    • C04B41/82—Coating or impregnation with organic materials
    • C04B41/83—Macromolecular compounds
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
    • B05D1/04—Processes for applying liquids or other fluent materials performed by spraying involving the use of an electrostatic field
    • B05D1/06—Applying particulate materials
    • 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
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/18—Processes for applying liquids or other fluent materials performed by dipping
    • B05D1/22—Processes for applying liquids or other fluent materials performed by dipping using fluidised-bed technique
    • B05D1/24—Applying particulate materials
    • 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
    • B05D2203/00—Other substrates
    • B05D2203/30—Other inorganic substrates, e.g. ceramics, silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2909/00—Use of inorganic materials not provided for in groups B29K2803/00 - B29K2807/00, as mould material
    • B29K2909/02—Ceramics
    • 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
    • C04B2111/00939—Uses not provided for elsewhere in C04B2111/00 for the fabrication of moulds or cores

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Moulding By Coating Moulds (AREA)

Abstract

The invention relates to a process for the treatment of porcelain patterns for producing articles by dipping. The old eroded porcelain patterns are first cleaned pyrolytically at from 500 to 900 degree C and subsequently coated with an aqueous porcelain paste containing oxides of main groups III and IV of the Periodic Table of the Elements and fired at from 500 to 1500 degree C.

Claims (2)

AT 394 041 B Verfahren zur Herstellung von Formen für Tauchartikeln Die Erfindung betrifft ein Verfahren zur Behandlung von Porzellanformen zur Herstellung von Tauchartikeln. Der Großteil der Formen für Tauchartikel (z. B. aus Latex, PVC, usw.), wird aus Porzellan gefertigt. 5 Im Rahmen der Tauchartikelherstellung werden die Tauchformen durch die erhöhten Temperaturen und verschiedenen Tauchbäder im Laufe der Zeit erodiert und müssen ausgetauscht werden. Die Lebensdauer von Prozel-lanformen, z. B. für die Herstellung von medizinischen Handschuhen, ist etwa 2 Jahre (bei 3 Schichtbetrieb). Die Famen sind danach für das Tauchverfahren nicht mehr einsetzbar und müssen entsorgt werden. Die Erfindung hat sich nun die Aufgabe gestellt, die Tauchformen durch Aufbringung einer dem jeweiligen 10 Tauchverfahren angepaßten Porzellanglasur zu erneuern. Gelöst wird die gestellte Aufgabe dadurch, daß alte erodierte Porzellanformen zuerst bei 500 bis 900 °C pyro-litisch gereinigt und anschließend mit einer wäßrigen Porzellanglasurpaste die Oxide da ΙΠ und IV Hauptgruppe des Periodensystems der Elemente enthält, beschichtet, und bei 500 bis 1500 °C gebrannt, werden. Die erodierten Porzellantauchfamen können wiederverwertet werden. Das Aufbringen von Beschichtungen auf 15 wertlos gewordene erodierte Porzellanformen ist wesentlich preisgünstiger als da Ankauf von neuen Formen. Beispiel: Die erodierte Porzellanform wird von der Anlage demontiert und in einem geeigneten Ofen bei 500 bis 900 eC pyrolytisch gereinigt 20 Danach wird auf die abgekühlten Formen im Tauch- oder Sprühverfahren eine wäßrige Porzellanglasur aufgebracht In anschließendem Brennprozeß wird die Porzellanglasur bei 500 bis 1500 °C gebrannt Die wäßrige Porzellanglasur besteht aus 10 bis 15 Gewichts% Oxiden der Gruppe I, 3 bis 5 Gewichts% Oxiden da Gruppe II, 15 bis 25 Gewichts% Oxiden der Gruppe ΙΠ (z. B. Aluminiumoxid), 60 bis 75 Gewichts% Oxiden da Gruppe IV (z. B. Siliciumoxid) und 0,01 bis 0,5 Gewichts% Oxiden da Nebengruppai (Metalloxide) 25 des Periodensystems der Elemente. Durch entsprechende Wahl der Porzellanrezepturen sowie durch Optimierung der Brennphase kann die Morphologie der Porzellanoberfläche beeinflußt werden. So könnoi von sehr glatten bis sehr rauhen Formober-flächen alle da Technologie des Tauchens angepaßte Oberflächen hergestellt werden. 30 PATENTANSPRUCH 35 Verfahren zur Behandlung von Porzellanformen zur Herstellung von Tauchartikeln, dadurch gekennzeichnet, daß alte erodierte Porzellanformen zuast bei 500 bis 900 °C pyrolytisch gereinigt und anschließend mit einer 40 wäßrigen Porzellanglasurpaste, die Oxide der ΙΉ und IV Hauptgruppe des Periodensystems der Elemente enthält, beschichtet und bei 500 bis 1500 °C gebrannt werden.AT 394 041 B Process for the production of molds for diving articles The invention relates to a process for the treatment of porcelain molds for the production of diving articles. The majority of the molds for diving articles (e.g. made of latex, PVC, etc.) are made of porcelain. 5 As part of the manufacture of diving articles, the diving forms are eroded by the increased temperatures and various immersion baths over time and must be replaced. The lifespan of Prozel lanformen, e.g. B. for the production of medical gloves, is about 2 years (with 3 shifts). The famen are then no longer usable for the immersion process and must be disposed of. The invention has now set itself the task of renewing the immersion molds by applying a porcelain glaze adapted to the particular immersion process. The problem is solved in that old eroded porcelain molds are first cleaned pyro-litically at 500 to 900 ° C and then coated with an aqueous porcelain glaze paste the oxides da ΙΠ and IV main group of the periodic table of the elements, and coated at 500 to 1500 ° C. be burned. The eroded porcelain dipping fibers can be reused. The application of coatings to 15 worthless eroded porcelain molds is much cheaper than buying new molds. Example: The eroded porcelain mold is disassembled from the system and pyrolytically cleaned in a suitable oven at 500 to 900 eC 20 Then an aqueous porcelain glaze is applied to the cooled molds in a dipping or spraying process. In the subsequent firing process, the porcelain glaze is applied at 500 to 1500 ° C fired The aqueous porcelain glaze consists of 10 to 15% by weight of Group I oxides, 3 to 5% by weight of Group II oxides, 15 to 25% by weight of Group Ox oxides (e.g. aluminum oxide), 60 to 75% by weight of oxides Group IV (e.g. silicon oxide) and 0.01 to 0.5% by weight oxides since minor groups (metal oxides) 25 of the periodic table of the elements. The morphology of the porcelain surface can be influenced by appropriate selection of the porcelain recipes and by optimization of the firing phase. So from very smooth to very rough form surfaces all surfaces adapted to the technology of diving can be produced. 30 PATENT CLAIM 35 Process for the treatment of porcelain molds for the manufacture of diving articles, characterized in that old eroded porcelain molds are cleaned pyrolytically almost at 500 to 900 ° C and then with a 40 aqueous porcelain glaze paste which contains oxides of the ΙΉ and IV main group of the periodic table of the elements, coated and fired at 500 to 1500 ° C. -2--2-
AT0266988A 1988-10-31 1988-10-31 Process for the treatment of porcelain patterns for producing articles by dipping AT394041B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT0266988A AT394041B (en) 1988-10-31 1988-10-31 Process for the treatment of porcelain patterns for producing articles by dipping
DE4116250A DE4116250C2 (en) 1988-10-31 1991-05-17 Process for the treatment of dipping forms and use of the process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0266988A AT394041B (en) 1988-10-31 1988-10-31 Process for the treatment of porcelain patterns for producing articles by dipping
DE4116250A DE4116250C2 (en) 1988-10-31 1991-05-17 Process for the treatment of dipping forms and use of the process

Publications (2)

Publication Number Publication Date
ATA266988A ATA266988A (en) 1991-07-15
AT394041B true AT394041B (en) 1992-01-27

Family

ID=39535564

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0266988A AT394041B (en) 1988-10-31 1988-10-31 Process for the treatment of porcelain patterns for producing articles by dipping

Country Status (2)

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AT (1) AT394041B (en)
DE (1) DE4116250C2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017188809A1 (en) * 2016-04-29 2017-11-02 Top Glove International Sdn Bhd Modified ceramic former for manufacturing a nitrile butadiene rubber (nbr) article having improved grip properties

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017105215A1 (en) * 2015-12-18 2017-06-22 Boey Weng Kee Richard Environmentally-friendly dipping molds with extended life and method of manufacturing thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687414A (en) * 1970-11-09 1972-08-29 Robert G Robbins Valve assembly
DE2206561A1 (en) * 1972-02-11 1973-08-23 Messer Griesheim Gmbh VALVE
JPS5837385A (en) * 1981-08-28 1983-03-04 Kiyoto Harada Speed change valve switching mechanism
GB2140533A (en) * 1983-03-01 1984-11-28 Douglas Diepa Williams Precision valve

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4230773A (en) * 1978-12-04 1980-10-28 International Business Machines Corporation Decreasing the porosity and surface roughness of ceramic substrates
DE3122138A1 (en) * 1981-06-04 1982-12-23 DECO-Glas, Peter Böttger KG, 5418 Selters "METHOD FOR IMPROVING THE SURFACE TEXTURE OF CERAMIC OBJECTS"

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3687414A (en) * 1970-11-09 1972-08-29 Robert G Robbins Valve assembly
DE2206561A1 (en) * 1972-02-11 1973-08-23 Messer Griesheim Gmbh VALVE
JPS5837385A (en) * 1981-08-28 1983-03-04 Kiyoto Harada Speed change valve switching mechanism
GB2140533A (en) * 1983-03-01 1984-11-28 Douglas Diepa Williams Precision valve

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN & JP-A-58 037 385 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017188809A1 (en) * 2016-04-29 2017-11-02 Top Glove International Sdn Bhd Modified ceramic former for manufacturing a nitrile butadiene rubber (nbr) article having improved grip properties

Also Published As

Publication number Publication date
ATA266988A (en) 1991-07-15
DE4116250C2 (en) 1999-10-28
DE4116250A1 (en) 1992-11-19

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