Dynamic mould tool

B - Operations – Transporting – 29 – C

Patent

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Details

B29C 33/20 (2006.01) B29C 44/58 (2006.01) B29C 45/26 (2006.01) B29C 45/34 (2006.01)

Patent

CA 2678561

Mould tool to be arranged in a press with essentially parallel press surfaces for production of rigid expanded polymer embryo bodies, the mould tool comprises a first mould member and an second mould member that are moveable with respect to each other in a direction perpendicular to the press surfaces, and sealing means providing an essentially hermetic seal between the first and second mould member during at least a portion of such a relative motion, thereby defining a closed mould cavity y o f variable volume, wherein the first mould member defines at least a portion of the mould cavity y volume and comprises an outer peripheral edge, and the second mould member comprises a rim that closely circumscribes the outer peripheral edge of the first mould member and wherein the sealing means is arranged in the gap formed between the rim and the outer peripheral edge.

L'invention concerne un outil de moule devant être disposé dans une presse avec des surfaces de presse sensiblement parallèles pour la fabrication de corps embryonnaires de polymère expansé rigide. L'outil de moule comporte un premier élément de moule et un second élément de moule qui sont déplaçables l'un par rapport à l'autre dans une direction perpendiculaire aux surfaces de presse, et un moyen de scellement étanche fournissant un joint d'étanchéité sensiblement hermétique entre les premier et second éléments de moule pendant au moins une partie d'un tel mouvement relatif, permettant ainsi de définir une cavité de moule fermée de volume variable. Le premier élément de moule définit au moins une partie du volume de cavité de moule et comporte une bordure périphérique externe, et le second élément de moule comporte un rebord qui circonscrit étroitement la bordure périphérique externe du premier élément de moule, et le moyen de scellement étanche est disposé dans l'espace formé entre le rebord et la bordure périphérique externe.

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