Method and laminating mechanism for producing a laminated...

B - Operations – Transporting – 32 – B

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B32B 37/00 (2006.01) B32B 15/08 (2006.01)

Patent

CA 2255836

A laminating process for producing plastic cores with clad metal sheets have typically occurred in the roll gap and afforded a short laminating zone and only a small amount of heat introduced into the composite. A laminating mechanism of the present invention comprises three laminating rollers in an approximately L-shaped mutual arrangement that can be pivotably or tiltably arranged. The duration of the pressure is increased by the action of the subsequent loops wrapping around the rollers, in this way the laminated composite emerging from a first roll gap wraps partially round the roll and is passed through at least one further roll gap. This increases the compressive force and is suitable in particular when manufacturing technical grade laminates with high tensile strength outer layers of e.g. aluminium, steel or tear resistant woven materials.

L'invention concerne un procédé permettant de produire un composite stratifié (38) comprenant au moins une couche centrale (36) avec au moins une couche de recouvrement (32), selon lequel les couches à relier mutuellement sont réunies sous forme de bandes et sont soumises à la pression de laminage voulue entre des rouleaux de laminage (14, 16, 18) dans l'écartement des rouleaux, par ajustement de la hauteur de l'écartement (d). Le composite stratifié (38) provenant d'un premier écartement des rouleaux (20) entoure en partie un des rouleaux de laminage (16) est ensuite guidé à travers au moins un second écartement des rouleaux (22). Un système de laminage (10) approprié comporte trois rouleaux de laminage disposés approximativement en L les uns par rapport aux autres. Pour les laminés techniques à couches de recouvrement résistant à la traction, une force de compression sur les rouleaux de laminage est produite par inversion par l'intermédiaire de la force d'extraction des couches de recouvrement. La durée de compression est augmentée par l'action des boucles suivantes enroulées autour des rouleaux.

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