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1. WO1985002579 - METHOD AND MOULD FOR FORMING OBJECTS WITH RIBS

Publication Number WO/1985/002579
Publication Date 20.06.1985
International Application No. PCT/NL1984/000043
International Filing Date 14.12.1984
IPC
B28B 7/00 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
7Moulds; Cores; Mandrels
B28B 7/36 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
36Linings or coatings
B29D 28/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
28Producing nets or the like
CPC
B28B 7/0038
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
0029Moulds or moulding surfaces not covered by B28B7/0058 - B28B7/36 and B28B7/40 - B28B7/465, e.g. moulds assembled from several parts
0035Moulds characterised by the way in which the sidewalls of the mould and the moulded article move with respect to each other during demoulding
0038the sidewalls of mould and moulded article moving only past each other, e.g. box-shaped moulds which are lifted off from the moulding
B28B 7/36
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
36Linings or coatings, ; e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
B29D 28/00
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
28Producing nets or the like, ; e.g. meshes, lattices
Applicants
  • PAG PRESSWERK AKTIENGESELLSCHAFT [DE]/[DE] (JP)
  • VELDHOEN, George, Gustaaf [NL]/[NL]
  • NICOLAY, Albert [DE]/[DE] (UsOnly)
  • SKOWRONNEK, Jürgen [DE]/[DE] (UsOnly)
  • RADEMACHER, Albrecht [DE]/[DE] (UsOnly)
Inventors
  • VELDHOEN, George, Gustaaf
  • NICOLAY, Albert
  • SKOWRONNEK, Jürgen
  • RADEMACHER, Albrecht
Agents
  • JACOBSON, Gerard
Priority Data
830433516.12.1983NL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND MOULD FOR FORMING OBJECTS WITH RIBS
(FR) PROCEDE ET MOULE POUR FORMER DES OBJETS AVEC DES NERVURES
Abstract
(EN)
A method for forming objects from hardenable material in a mould, as well as a mould adapted to be applied with this method. The mould is provided with a deformable lining (5), which is fixed to the mould at least along its edge. This flexible lining (5) can be brought into two positions, i.e. into a first position, in which the mould is in a discharging or a filling position, and into a second position, in which the mould occupies a hardening position. In this hardening position of the mould the interior of the lining (5), which defines the mould cavity, corresponds with the external shape of the object to be formed, whilst in the discharging or the filling position of the mould both the internal space of the lining and its upper discharge or filling opening are considerably larger. In the discharging or the filling position of the mould a subatmospheric pressure is exerted on the lower side of the lining (5), while in order to bring the mould into the hardening position this subatmospheric pressure is released and a support core system (2) accommodated in the mould is at least partially displaced upwardly.
(FR)
Procédé pour former des objets à partir d'un matériau durcissable dans un moule, ainsi qu'un moule conçu pour être appliqué avec le présent procédé. Le moule est doté d'un garnissage déformable (5) qui est fixé au moule au moins sur son bord. Ce garnissage flexible (5) peut être amené dans deux positions, c'est à dire dans une première position où le moule est en position de décharge ou de remplissage et dans une seconde position où le moule prend une position de durcissement. Lorsque le moule est en position de durcissement, l'intérieur du garnissage (5) déterminant la cavité du moule correspond à la forme externe de l'objet à former, alors que, lorsque le moule est en position de décharge ou de remplissage, l'espace intérieur du garnissage et son ouverture supérieure de décharge ou de remplissage sont considérablement plus grands. Lorsque le moule est en position de décharge ou de remplissage, une pression subatmosphérique est excercée sur le côté inférieur du garnissage (5), alors que cette pression subatmosphérique est relâchée et qu'un système de noyau de support (2) prévu dans le moule est au moins partiellement déplacé vers le haut afin d'amener le moule en position de durcissement.
Also published as
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