GB1390033A - Moulds for ceramic products - Google Patents

Moulds for ceramic products

Info

Publication number
GB1390033A
GB1390033A GB4343071A GB4343071A GB1390033A GB 1390033 A GB1390033 A GB 1390033A GB 4343071 A GB4343071 A GB 4343071A GB 4343071 A GB4343071 A GB 4343071A GB 1390033 A GB1390033 A GB 1390033A
Authority
GB
United Kingdom
Prior art keywords
mould
polyurethane
agents
examples
treatment
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
GB4343071A
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.)
BASF Schweiz AG
Original Assignee
Synthesewerk Schwarzheide 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 Synthesewerk Schwarzheide AG filed Critical Synthesewerk Schwarzheide AG
Priority to GB4343071A priority Critical patent/GB1390033A/en
Publication of GB1390033A publication Critical patent/GB1390033A/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
    • B28B1/00—Producing shaped prefabricated articles from the material
    • B28B1/26—Producing shaped prefabricated articles from the material by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor ; specially for manufacturing articles starting from a ceramic slip; Moulds therefor
    • B28B1/261—Moulds therefor
    • B28B1/262—Mould materials; Manufacture of moulds or parts thereof
    • B28B1/263—Plastics
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

1390033 Polyurethane moulds SYNTHESEWERK SCHWARZHEIDE VEB 26 June 1972 [17 Sept 1971] 43430/71 Heading B5A A mould for use in producing a ceramic article, e.g. a cup or dish, is made of rigid or flexible polyurethane foam. The working surface(s) of the mould is rendered hydrophilic by a mechanical or chemical roughening treatment. The mechanical treatment may comprise sand-blasting or rubbing with sand paper. The chemical treatment may comprise immersion in concentrated sulphuric acid, chromic acid or potassium hydroxide in ethanol. Non-working surfaces of the mould may be protected by silicone grease and/or silicone plugs during the roughening treatment. The polyurethane may be based upon a polyether alcohol, polyester alcohol, polyether-ester polyols, hydroxypolyester amide, or hydroxypolyether amide. A large number of examples are given, the examples embracing linear, cross-linked prepolymer aliphatic, aromatic and alicylic constituents. Many examples of aliphatic, aromatic, alicyclic heterocyclic di-isocyanates catalysts, activators, chain-lengthening agents, foaming agents, foam stabilizers, emulsifiers, crosslinking agents, stabilizers for improving resistance to hydrolysis, reaction retarders, P.V.C. fillers, and mould release agents are given. The polyurethane mould may be formed with conical through-bores and may be used in casting, rotary or pressing operations.
GB4343071A 1971-09-17 1971-09-17 Moulds for ceramic products Expired GB1390033A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4343071A GB1390033A (en) 1971-09-17 1971-09-17 Moulds for ceramic products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4343071A GB1390033A (en) 1971-09-17 1971-09-17 Moulds for ceramic products

Publications (1)

Publication Number Publication Date
GB1390033A true GB1390033A (en) 1975-04-09

Family

ID=10428722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4343071A Expired GB1390033A (en) 1971-09-17 1971-09-17 Moulds for ceramic products

Country Status (1)

Country Link
GB (1) GB1390033A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329437A1 (en) * 1975-10-29 1977-05-27 Oesterr Heraklith Ag Mould for producing light panels from wood fibres - having base and side slats made of single piece of expanded, rigid polyurethane foam with non-porous surface
GB2128925A (en) * 1982-10-16 1984-05-10 Laeis Werke Ag Moulding ceramics
EP0191409A1 (en) * 1985-02-08 1986-08-20 Hitachi, Ltd. Slip casting method
EP0567339A1 (en) * 1992-04-23 1993-10-27 British Ceramic Research Limited Ware shaping apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2329437A1 (en) * 1975-10-29 1977-05-27 Oesterr Heraklith Ag Mould for producing light panels from wood fibres - having base and side slats made of single piece of expanded, rigid polyurethane foam with non-porous surface
GB2128925A (en) * 1982-10-16 1984-05-10 Laeis Werke Ag Moulding ceramics
EP0191409A1 (en) * 1985-02-08 1986-08-20 Hitachi, Ltd. Slip casting method
US4871497A (en) * 1985-02-08 1989-10-03 Hitachi, Ltd. Slip casting method
EP0567339A1 (en) * 1992-04-23 1993-10-27 British Ceramic Research Limited Ware shaping apparatus

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee