METHOD OF MAKING LAMINATE STRUCTURES Russian patent published in 1995 - IPC

FIELD: production of laminate cellular constructions. SUBSTANCE: method comprises steps of welding filler sheets according to a predetermined pattern; assembling them with facing sheets to a pack and molding them with use of a die by a pressure of a working fluid, providing a predetermined deformation rate and being fed into a cavity between the facing sheets and the filler up to formation by the last of rigidity ribs; pressing the facing sheets to the filler sheets, for example by evacuating a space between them; at first feeding the working fluid into the cavity between the filler sheets and beginning to feed the working fluid into the cavity between the facing sheets and the filler sheets no late, than at a time moment, when in one of cross sections of the construction to be made by a plane, being normal relative to an initial position of the filler and crossing welded seams of the filler, a length of a line of crossing of that plane with a surface of the facing is equal to a length of a gravure of the die in the same cross section. EFFECT: enhanced efficiency of the method. 1 cl, 5 dwg