Processing

Please wait...

Settings

Settings

Goto Application

1. WO1980001888 - MOULDING OF CONSTRUCTION PRODUCTS

Publication Number WO/1980/001888
Publication Date 18.09.1980
International Application No. PCT/GB1980/000032
International Filing Date 28.02.1980
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 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
CPC
B28B 1/521
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 ; prefabricated; articles from the material
52specially adapted for producing articles from mixtures containing fibres, ; e.g. asbestos cement
521from dry mixtures to which a setting agent is applied after forming
B28B 13/028
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
028Deflecting the flow of the unshaped material
B28B 7/465
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
465Applying setting liquid to dry mixtures
Applicants
Inventors
Priority Data
790761105.03.1979GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MOULDING OF CONSTRUCTION PRODUCTS
(FR) MOULAGE DE PRODUIT DE CONSTRUCTION
Abstract
(EN)
A method of manufacturing a construction product, in particular a hollow cored constructed product, comprises the steps of feeding, with an oscillating feed (2), a dry liquid setting powder into a mould (5) having a substantially vertical bore former or formers (6) therein. The powder is compacted in the mould (5) by vibrating the former (6) and by applying pressure to the top surface of the powder after filling. The or each former (6) is withdrawn and the bore surface wetted by lightly spraying or by seepage from the bore former (6) during withdrawal, just sufficient liquid being applied to wet all of, but not saturate, the powder. The wetted product may then be removed from the mould (5) before setting commences but without collapse of the wetted powder. The powder may be reinforced by fibres of between 25 and 100 mm in length, continuous, vertically disposed fibres and/or open textured mats of 60 to 100 gm/m2 in weight. The content of the water and wetting agent setting liquid in the wetted product is up to 25% by weight of the dry powder.
(FR)
Une methode de fabrication d'un produit de construction, en particulier un produit a noyau creux, comprend l'alimentation oscillante (2) en poudre seche a prise liquide dans un moule (5) ayant un ou des elements de formation de cavite (6) introduit(s) verticalement. La poudre est compactee dans le moule (5) en faisant vibrer l'element (6) et en appliquant une pression a la surface de la poudre apres remplissage. Le ou chaque element (6) est retire et la surface de l'alesage mouillee par legere atomisation ou par infiltration provenant de l'element (6) pendant le retrait, en quantite du liquide juste suffisante etant appliquee pour mouiller la totalite de la poudre sans la saturer. Le produit mouille peut alors etre retire du moule (5) avant que ne commence la prise mais sans que la poudre mouillee ne s'effrite, La poudre peut etre renforcee par des fibres de 25 a 100 mm de longueur, continues, disposes verticalement et/ou de nattes a texture ouverte de 60 a 100 gm/m2 en poids. La teneur en eau et en liquide de prise d'agent de mouillage dans le produit mouille est de 25% au plus en poids de poudre seche.
Also published as
Other related publications
Latest bibliographic data on file with the International Bureau