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

1993-03-24

2000-03-14

Mayes, Curtis

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

15624411, 15624418, 156252, 156259, 156270, B32B 3106, B32B 3112, B32B 3118

Patent

active

060368039

ABSTRACT:
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 layer (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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