PROCESS AND SYSTEM FOR PREPARING A BLOCK OF POLYURETHANE / POLYISOCYANURATE FOAM FROM A TANK OF THERMAL INSULATION OF A TANK

摘要

The present invention relates to a preparation of a block of fiber polyurethane / polyisocyanurate foam in which the expansion of the foam is constrained by the walls of a double strip laminator forming a tunnel, the positioning of the walls of the tunnel of the double strip laminator being defined such that the expansion constraint of the fiber-reinforced polyurethane / polyisocyanurate foam leads to a volume of fiber-reinforced polyurethane / polyisocyanurate foam, at the outlet of the double-strip laminator, representing between 92% and 99% of the volume d expansion of the same polyurethane foam / polyisocyanurate fiber in the case of free expansion, without the constraint of the walls of such a double strip laminator. Figure to be published: figure 1