Process for the production of a structured film
AssigneeW. L. Gore & Associates, Inc.
InventorsAlexander Zaggl, Bernadette Heller, Andre Hartmann
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Abstract
The present invention relates to a process for the formation of a structured film, a structured film as such, an article comprising the structured film, a device for the continuous formation of such a structured film and a composite comprising the structured film.
Claims28
A process for the formation of a structured porous film comprising:
- a) applying a porous film onto an elastic substrate in a stretched state such that a reversible adhesion of the porous film on the stretched substrate occurs,
- b) relaxing the substrate with the applied film thereon to obtain a structured porous film, and
- c) removing the structured porous film from the substrate.
A structured porous film comprising a porous film reversibly adhered to an elastic substrate, wherein structures in the porous film have a height at least two times the thickness of a non-structured film and the structure density in at least one direction is at least 1/mm.
A structured porous film consisting of:
- a porous film having structures in the porous film that have a height at least two times the thickness of a non-structured film and the structure density in at least one direction is at least 1/mm,
- wherein said porous film has a multi-layered structure.
A structured porous film comprising:
- a porous film having structures therein that have a height at least two times the thickness of the non-structured film and the structure density in at least one direction is at least 1/mm,
- wherein said structures are permanent in said porous film separate from a substrate.
Dependencies are inferred from the claim text.