Method of producing packaging material in the form

专利名称：Method of producing packaging material in

the form of a web, and packaging materialmade by means of the method

发明人：Lasson, Rolf,Öhman, Peter申请号：EP93104452.3申请日：19930318公开号：EP0575703A1公开日：19931229

专利附图：

摘要：The disclosure relates to a method of producing packaging material comprisinga 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 aluminiumfoil 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 asa film between the aluminium foil and the surface of a cooling roller while, in a secondoperation, which is carried out on the same cooling roller, a web (9) of paper or boardprovided with holes, apertures or slits (14) is united with the above-mentioned primarylaminate (7) by the intermediary of an extruded polyethylene layer (16).

申请人：Tetra Laval Holdings & Finance SA

地址：Avenue Général-Guisan 70 1009 Pully CH

国籍：CH

代理机构：Müller, Hans-Jürgen, Dipl.-Ing.

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