GB1381479A - Moulds - Google Patents

Moulds

Info

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
Application number
GB743571A
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.)
Allright J R
BATCHELOR P J TWIGG E
Original Assignee
Allright J R
BATCHELOR P J TWIGG E
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 Allright J R, BATCHELOR P J TWIGG E filed Critical Allright J R
Priority to GB743571A priority Critical patent/GB1381479A/en
Priority to DE19722204584 priority patent/DE2204584A1/en
Publication of GB1381479A publication Critical patent/GB1381479A/en
Expired legal-status Critical Current

Links

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.
GB743571A 1971-03-18 1971-03-18 Moulds Expired GB1381479A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Cited By (8)

* Cited by examiner, † Cited by third party
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