WIPO logo
Mobile | Deutsch | Español | Français | 日本語 | 한국어 | Português | Русский | 中文 | العربية |
PATENTSCOPE

Search International and National Patent Collections
World Intellectual Property Organization
Search
 
Browse
 
Translate
 
Options
 
News
 
Login
 
Help
 
Machine translation
1. (WO1980001888) MOULDING OF CONSTRUCTION PRODUCTS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/001888    International Application No.:    PCT/GB1980/000032
Publication Date: 18.09.1980 International Filing Date: 28.02.1980
IPC:
B28B 1/52 (2006.01), B28B 7/46 (2006.01)
Applicants:
Inventors:
Priority Data:
7907611 05.03.1979 GB
Title (EN) MOULDING OF CONSTRUCTION PRODUCTS
(FR) MOULAGE DE PRODUIT DE CONSTRUCTION
Abstract: front page image
(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 The or each former (6) is withdrawn and the bore surface wetted by lightly spraying or by seepage from the bore former (6) during withdrawal, just sufficient liquid being applied to wet all of,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.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)