Method for the production of composite panels based on...

B - Operations – Transporting – 28 – D

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B28D 1/00 (2006.01) B27B 31/06 (2006.01) B32B 9/04 (2006.01) E04C 2/06 (2006.01) E04C 2/26 (2006.01)

Patent

CA 2069512

In a first step of the method, a pack (P) of slabs is formed by positioning successive layers constituted by ornamental slabs of stone or equivalent material alternating with supplementary layers constituted by slabs or sheets in succession on a support base (10). A liquid-tight container (C) is then formed around the pack (P). A peripheral space is left in the container (C) at least around the edges of the layers of the pack (P). The interior of the container (C) is then subjected to a vacuum and a settable fluid binder, such as a thermosetting synthetic resin, is introduced into the container whilst it is under vacuum so that the binder fills the whole of the peripheral space, penetrates the gaps between the slabs, and covers the pack of slabs. The vacuum is then re- leased to complete the penetration of the binder and the binder is left, or made, to set so as to produce a consolidated pack of slabs in a block in which the faces of the block corresponding to the edges of the layers are covered by a hermetic covering of bin- der. The block thus produced is then subjected to final multiple cutting along intermediate planes of some layers to produce one or more composite panels from each zone between two consecutive cuts.

Lors de la première étape de la présente méthode, un paquet (P) de plaques est formé en plaçant des couches successives constituées de plaques ornementales de pierre ou de matériau équivalent en alternance avec des couches supplémentaires composées de plaques ou de feuilles placées successivement sur une base (10). Un contenant étanche aux liquides (C) est ensuite mis en place autour du paquet (P). Un espace périphérique est laissé dans le contenant (C) au moins autour des bords des couches du paquet (P). L'intérieur du contenant (C) est mis sous vide, et un liant fluide durcissable, comme une résine synthétique thermodurcissable, est introduit dans le contenant pendant qu'il est encore sous vide de sorte que le liant remplit tout l'espace périphérique, pénètre dans les espaces entre les plaques et couvre le paquet de plaques. La mise sous vide est ensuite arrêtée afin de terminer l'introduction du liant, et on laisse le liant ou on fait en sorte qu'il durcisse de manière à produire un paquet consolidé de plaques dans un bloc dont les faces correspondant aux bords des couches sont couvertes d'un revêtement hermétique de liant. Le bloc ainsi obtenu subit alors de multiples coupes finales sur les plans intermédiaires de certaines couches afin de produire un ou plusieurs panneaux composites à partir de chaque zone comprise entre deux coupes consécutives.

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