Method of producing packaging material in the form of a web

Details Method of producing packaging material in the form of a web Method of producing packaging material in the form of a web

B - Operations, Transporting

65

D

B65D 65/38 (2006.01) B29C 47/02 (2006.01) B32B 15/08 (2006.01) B32B 15/12 (2006.01) B32B 37/00 (2006.01) B65B 61/00 (2006.01) B65D 5/72 (2006.01) B65D 65/40 (2006.01)

Patent

CA 2092468

The disclosure relates to a method of producing packaging material comprising a core layer (9) which is provided with punched holes, apertures or slits (14), and which displays, along its one side, an unbroken Payer (7) of a laminate consisting of aluminium foil and polyethylene. On production of the packaging material, a "primary laminate" (7) of polyethylene and aluminium foil is first created in that the polyethylene is extruded as a film between the aluminium foil and the surface of a cooling roller while, in a second operation, which is carried out on the same cooling roller, a web (9) of paper or board provided with holes, apertures or slits (14) is united with the above-mentioned primary laminate (7) by the intermediary of an extruded polyethylene layer (16).

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