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Machine translation
1. (WO2013044321) FLEXIBLE COMPOSITE MATERIAL
Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:

1 . A concrete formwork liner, comprising a flexible laminate material, said material including at least one sub-layer of relatively moisture-resistant paper bonded to a layer of plastic film, wherein the plastic film layer is adapted to make direct contact with the concrete.

2. The laminate material of claim 1 , wherein the plastic film is selected from the group comprising polyethylene (PE), polyethylene terephthalate (PET), high density polyethylene (HDPE), low density polyethylene (LDPE) and biaxially oriented polypropylene (BOPP).

3. The laminate material of claim 2, wherein the plastic film is extruded.

4. The laminate material of any preceding claim, wherein there are two sub-layers bonded to one another.

5. The laminate material of claim 4, wherein the sub-layers are bonded via the respective paper surfaces.

6. The laminate material of claim 5, wherein the respective paper surfaces are bonded via PE, polypropylene (PP) or HDPE.

7. The concrete formwork liner of any preceding claim, wherein there are one or more sub-layers bonded to one another.

8. A concrete formwork liner substantially as herein described with respect to the examples.

9. A flexible laminate material, suitable for use as a concrete formwork liner, substantially as herein described with respect to the examples.