method for laminating of sections made of cardboard, corrugated cardboard, etc. for the manufacture of packaging

摘要

1528773 Laminates DR RUDOLPH SCHIEBER CHEMISCHE FABRIK KG 9 Sept 1975 [10 Sept 1974] 36939/75 Heading B5N A lined blank comprises a backing layer 2 and a lining layer 1 formed from a sheet material and bonded to the backing layer by a more rapidly setting adhesive, joining regions 6, 7 of adjacent surfaces of the two layers together, and by a less rapidly setting adhesive joining the remaining regions 8 of the adjacent surfaces of the two layers together, lining layer 1 which may be printed may be of paper, plastics film or metal foil and backing layer 2 may be of plastics material, cardboard or corrugated cardboard. The adhesives may be applied by means of rollers, the corrugations in those regions where the more rapidly setting adhesives is to be applied being pressed flat tc prevent application of the other adhesives tc these regions. After application of the ad hesives the layers may be pressed together with rollers, bands or belts. Edge regions 4, 5 may be cut away during further processing, the more rapidly setting adhesive may be a dispersion glue, natural or synthetic latex, hot melt adhesive or animal glue and the more slowly setting adhesive may be vegetable glue, cellulose glue or second dispersion glue.