GB1381479A - Moulds - Google Patents
MouldsInfo
- Publication number
- GB1381479A GB1381479A GB743571A GB743571A GB1381479A GB 1381479 A GB1381479 A GB 1381479A GB 743571 A GB743571 A GB 743571A GB 743571 A GB743571 A GB 743571A GB 1381479 A GB1381479 A GB 1381479A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- suction
- porous
- pressurized air
- mixture
- 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
- 239000000203 mixture Substances 0.000 abstract 5
- 239000000654 additive Substances 0.000 abstract 2
- 230000000996 additive effect Effects 0.000 abstract 2
- 239000011505 plaster Substances 0.000 abstract 2
- 229920000877 Melamine resin Polymers 0.000 abstract 1
- 239000004640 Melamine resin Substances 0.000 abstract 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract 1
- 229920001807 Urea-formaldehyde Polymers 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000004927 clay Substances 0.000 abstract 1
- 229910052602 gypsum Inorganic materials 0.000 abstract 1
- 239000010440 gypsum Substances 0.000 abstract 1
- 229910010272 inorganic material Inorganic materials 0.000 abstract 1
- 239000011147 inorganic material Substances 0.000 abstract 1
- 150000007974 melamines Chemical class 0.000 abstract 1
- 229920000609 methyl cellulose Polymers 0.000 abstract 1
- 239000001923 methylcellulose Substances 0.000 abstract 1
- 235000010981 methylcellulose Nutrition 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000004848 polyfunctional curative Substances 0.000 abstract 1
- 239000011148 porous material Substances 0.000 abstract 1
- 229920005989 resin Polymers 0.000 abstract 1
- 239000011347 resin Substances 0.000 abstract 1
Classifications
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/344—Moulds, cores, or mandrels of special material, e.g. destructible materials from absorbent or liquid- or gas-permeable materials, e.g. plaster moulds in general
-
- 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
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
- B28B13/067—Removing the shaped articles from moulds by applying blows or vibrations followed by, or during, the removal of a mould part
-
- 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
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/40—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material
- B28B7/46—Moulds; Cores; Mandrels characterised by means for modifying the properties of the moulding material for humidifying or dehumidifying
Landscapes
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
1381479 Porous moulds P J BATCHELOR E TWIGG and J R ALLRIGHT 24 Feb 1972 [18 March 1971] 7435/71 Heading B5A A mould member, for pressing or casting ceramics, is made from a composition consisting of porous plaster mixed with a resin additive to enhance the wear resistance and has one or more passages within it whereby suction or pressurized air may be applied to act, on an article formed in the mould, through the porosity of the mould member. The composition may comprise a mixture of α and/or # semi-hydrate or gypsum with minor amounts of other inorganic materials and the additive is a modified melamine resin preferably with a small percentage of phenol or urea resin. A pore forming agent such as a methyl cellulose may be added and an accelerator, hardener and retarder may be added to the mixture. Examples of suitable mixtures are given. The mould members may be porous plaster die members 5, 6 of a pressing die with porous or perforated pipes 11 for pressure or suction and having spaces 12 to receive excess clay from the main cavity 9 when the press is closed. When moulding is completed the suction in the lower member may be replaced by pressurized air to assist release as the upper member is lifted, the suction in this member being maintained during lifting to raise the article with the mould member for subsequent release on to a support.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB743571A GB1381479A (en) | 1971-03-18 | 1971-03-18 | Moulds |
DE19722204584 DE2204584A1 (en) | 1971-03-18 | 1972-02-01 | Mold, in particular for ceramic objects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB743571A GB1381479A (en) | 1971-03-18 | 1971-03-18 | Moulds |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1381479A true GB1381479A (en) | 1975-01-22 |
Family
ID=9833048
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB743571A Expired GB1381479A (en) | 1971-03-18 | 1971-03-18 | Moulds |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE2204584A1 (en) |
GB (1) | GB1381479A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035205A (en) * | 1973-03-30 | 1975-04-03 | ||
JPS53153044U (en) * | 1977-05-07 | 1978-12-01 | ||
GB2206523A (en) * | 1987-07-01 | 1989-01-11 | Micropore International Ltd | Moulds with venting means |
GB2331040A (en) * | 1997-11-05 | 1999-05-12 | Universal Pulp Packaging Ltd | Porous mould for forming fibre products |
IT201700076893A1 (en) * | 2017-07-07 | 2019-01-07 | Sacmi | APPARATUS AND METHOD FOR THE PRODUCTION OF CERAMIC PRODUCTS |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH664525A5 (en) * | 1985-10-10 | 1988-03-15 | Uniport Theodor Hirzel | METHOD AND DEVICE FOR CASTING OF PARTICULAR PLASTICS AND RESIN CONCRETE OR mortar-MOLDING. |
JPS6331709A (en) * | 1986-07-26 | 1988-02-10 | 東陶機器株式会社 | Pottery pressure casting molding die |
JPS6331708A (en) * | 1986-07-26 | 1988-02-10 | 東陶機器株式会社 | Manufacture of pottery pressure casting molding die |
CH675096A5 (en) * | 1987-04-09 | 1990-08-31 | Uniport Theodor Hirzel |
-
1971
- 1971-03-18 GB GB743571A patent/GB1381479A/en not_active Expired
-
1972
- 1972-02-01 DE DE19722204584 patent/DE2204584A1/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5035205A (en) * | 1973-03-30 | 1975-04-03 | ||
JPS5519726B2 (en) * | 1973-03-30 | 1980-05-28 | ||
JPS53153044U (en) * | 1977-05-07 | 1978-12-01 | ||
JPS5629123Y2 (en) * | 1977-05-07 | 1981-07-10 | ||
GB2206523A (en) * | 1987-07-01 | 1989-01-11 | Micropore International Ltd | Moulds with venting means |
GB2331040A (en) * | 1997-11-05 | 1999-05-12 | Universal Pulp Packaging Ltd | Porous mould for forming fibre products |
IT201700076893A1 (en) * | 2017-07-07 | 2019-01-07 | Sacmi | APPARATUS AND METHOD FOR THE PRODUCTION OF CERAMIC PRODUCTS |
EP3424659A1 (en) * | 2017-07-07 | 2019-01-09 | Sacmi Cooperativa Meccanici Imola Societa' Cooperativa | Apparatus and method for manufacturing ceramic products |
Also Published As
Publication number | Publication date |
---|---|
DE2204584A1 (en) | 1972-09-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |