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1. WO1993003899 - PROCESS AND DEVICE FOR PRODUCING MULTI-LAYERED, FIBRE-REINFORCED PLASTER PLATES

Publication Number WO/1993/003899
Publication Date 04.03.1993
International Application No. PCT/EP1992/001897
International Filing Date 20.08.1992
Chapter 2 Demand Filed 16.03.1993
IPC
B28B 1/52 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped articles from the material
52specially adapted for producing articles from mixtures containing fibres
B28B 5/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
5Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in or on conveyors irrespective of the manner of shaping
02on conveyors of the endless-belt or chain type
B28B 7/46 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
7Moulds; Cores; Mandrels
40characterised by means for modifying the properties of the moulding material
46for humidifying or dehumidifying
B28B 13/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
13Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
02Feeding the unshaped material to moulds or apparatus for producing shaped articles
B28B 17/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
17Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
02Conditioning the material prior to shaping
B28B 19/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
19Machines or methods for applying the material to surfaces to form a permanent layer thereon
CPC
B28B 1/526
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
1Producing shaped ; prefabricated; articles from the material
52specially adapted for producing articles from mixtures containing fibres, ; e.g. asbestos cement
526by delivering the materials on a conveyor of the endless-belt type
B28B 13/02
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
13Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
02Feeding the unshaped material to moulds or apparatus for producing shaped articles
B28B 17/023
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
17Details of, or accessories for, apparatus for shaping the material; Auxiliary measures taken in connection with such shaping
02Conditioning the material prior to shaping
023Conditioning gypsum
B28B 19/0092
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
19Machines or methods for applying the material to surfaces to form a permanent layer thereon
0092to webs, sheets or the like, e.g. of paper, cardboard
B28B 5/027
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
5Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyors irrespective of the manner of shaping
02on conveyors of the endless-belt or chain type
026the shaped articles being of indefinite length
027the moulding surfaces being of the indefinite length type, e.g. belts, and being continuously fed
B28B 7/46
BPERFORMING OPERATIONS; TRANSPORTING
28WORKING CEMENT, CLAY, OR STONE
BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
7Moulds; Cores; Mandrels
40characterised by means for modifying the properties of the moulding material
46for humidifying or dehumidifying
Applicants
  • BABCOCK-BSH AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • BOLD, Jörg [DE]/[DE] (UsOnly)
Inventors
  • BOLD, Jörg
Common Representative
  • BABCOCK-BSH AKTIENGESELLSCHAFT
Priority Data
P 41 27 929.823.08.1991DE
P 41 27 930.123.08.1991DE
P 41 27 932.823.08.1991DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND VORRICHTUNG ZUR HERSTELLUNG VON MEHRSCHICHTIGEN FASERVERSTÄRKTEN GIPSPLATTEN
(EN) PROCESS AND DEVICE FOR PRODUCING MULTI-LAYERED, FIBRE-REINFORCED PLASTER PLATES
(FR) PROCEDE ET DISPOSITIF DE FABRICATION DE CARREAUX DE PLATRE A COUCHES MULTIPLES RENFORCES PAR DES FIBRES
Abstract
(DE)
Gipsfaserplatten werden in einem mehrschichtigen kontinuierlichen Filtrationsverfahren hergestellt, indem eine Suspension von Gips und naß aufbereiteten Fasern, bevorzugt aus Altpapier, auf wenigstens zwei Siebbändern entwässert werden. Wenigsten zwei der Schichten werden aus im wesentlichen gleichen Filtriereinheiten erzeugt, die gegenläufig arbeiten. Die Schichten werden dann Oberseite auf Oberseite zusammengegautscht. Bei dreischichtiger Arbeitsweise kann die mittlere Schicht mit streubarem bindemittelhaltigem Material gebildet werden. Mehrere Vorrichtungen und Verfahrenskonfigurationen sind beschrieben.
(EN)
Fibre-reinforced plaster plates are produced in a multi-layered continuous filtration process. A suspension of plaster and wet processed fibres, preferably from used paper, is dewatered on at least two travelling screens. At least two layers are produced in essentially identical filtering units that work in opposite directions. The layers are then reversed so that their top surfaces face each other. When three layers are processed, the central layer may be composed of a dispersible, binder-containing material. Several devices and process configurations are disclosed.
(FR)
On produit des carreaux de plâtre renforcés par des fibres selon un procédé de filtration en continu à couches multiples. A cet effet, on déshydrate sur au moins deux tamis sans fin une suspension de plâtre et de fibres préparées par voie humide, de préférence à partir de vieux papiers. Au moins deux couches sont générées dans des unités de filtrage essentiellement identiques fonctionnant en sens contraire. On renverse ensuite les couches, de sorte que leurs faces supérieures soient en vis-à-vis. Lorsque l'on travaille avec trois couches, la couche centrale peut être composée d'un matériau dispersible contenant un liant. L'invention concerne plusieurs dispositifs et configurations permettant de mettre en ÷uvre le procédé.
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