FIELD: refrigerating engineering; production of corrugated strips of material for packing heat exchange columns. SUBSTANCE: in preferable method zigzag folding of strip film is carried out with preliminarily corrugating at which edges of folds in cross section are made in form of arches with radius of curvature exceeding 1 mm. Additional forming of each second edge of fold is provided owing to the fact that corrugating tool acts onto angle of bending at one side and at other side radius of curvature of fold edge is reduced to value less than 1 mm. Additional forming of other edges of folds is carried out as described in second operation. Additional forming operations are carried out by means of rocking press devices containing rotating toothed roll and corrugating tool. Corrugating tool can be set into operation by means of eccentric. Tool is connected with vertically moving sliding member through rocking axle. At engagement with roll tooth, corrugating tool decreases radius of curvature of fold edge and it can additionally change corresponding angle of curvature. EFFECT: enhanced quality of packing material. 13 cl, 7 dwg
