Amcor Limited

Amcor Packaging (australia) Pty

Ramon Glenny Waycott

David Lee Carew

Erol Craig Harvey

Richard Leigh Barber

William Howard Barling

Jasson Lindsay Mills

A tool for perforating a polymeric film is disclosed having a support substrate and at least one projection extending from the substrate. The projection is multi-sided with side walls that have straight sides that are tapered upwardly and inwardly from the support substrate at an angle theta (&#x3b8;) that is at least 5&#xb0;. The angle is measured in relation to imaginary lines extending perpendicularly to the substrate at the locations at which the side walls contact the substrate.

Method and an apparatus for perforating polymeric film

A method for treating a film by providing a structure including a substrate and an array of upstanding projections each of which includes multiple contact points. The structure is pressed against the surface of a polymeric film to cause deformation or rupture of the film. The film may then be pressed to partially reseal the perforations. The structure can be produced by electroplating a mould which includes an array of elements of dimensions corresponding to the projections of the desired structure.

Method for the treating films

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Donvale, Australia

Ramon Glenny Waycott