Flat structure that is at least partially provided with a self-adhesive substance

1. A self-adhesive construct comprising a sheet structure and a self-adhesive mass on at least a portion of said sheet structure, wherein on a first areal layer of the sheet structure the self-adhesive mass is present in the form of a multiplicity of deformable geometric structures of varying heights, and some of the geometric structures having the greatest height have been treated such that the treated part of the surface exhibits a lower tack than untreated self-adhesive mass exhibits, whereas some of the geometric structures having the lowest height have not been so treated.

2. The self-adhesive construct of claim 1 , wherein the first areal layer of the self-adhesive construct is a carrier material, in the form of a rigid or elastic film, foam, woven, paper, knitted, nonwoven or gel carrier, a coating-material layer or a layer of an adhesive.

3. The self-adhesive construct of claim 1 , which has a multilayer composite construction.

4. The self-adhesive construct of claim 1 , wherein the geometric structures are polygeometric domes.

5. The self-adhesive construct of claim 1 , wherein the self-adhesive mass is a hot-melt adhesive.

6. The self-adhesive construct of claim 5 , wherein the hotmelt adhesive is based on A-B or A-B-A block copolymers or blends thereof, and phase A is principally polystyrene or its derivatives and phase B is ethylene, propylene, butadiene, isoprene or mixtures thereof.

7. The self-adhesive construct of claim 1 , wherein the self-adhesive mass is present on the first areal layer with a coatweight of 5 to 400 g/m 2 .

8. The self-adhesive construct of claim 1 , wherein the self-adhesive mass geometry on the first areal layer has been deactivated, relative to its projection area, to an extent of 15% to 75%.

9. The self-adhesive construct of claim 1 , wherein some of the geometric structures have different shapes compared to other of the geometric structures.

10. The self-adhesive construct of claim 1 , which in an adhesively bonded state comprises channels between the geometric structures of self-adhesive mass.

11. A method of bonding a self-adhesive construct comprising increasing the tack of the self-adhesive construct in stages to effect a bond between the self-adhesive construct and the substrate, wherein said increasing is brought about by applying a first pressure to the self-adhesive construct and thereafter applying a second pressure to self-adhesive construct, wherein the first pressure is less than the second pressure and where the self-adhesive construct comprises a sheet structure and a self-adhesive mass on at least a portion of said sheet structure, wherein on a first areal layer of the sheet structure the self-adhesive mass is present in the from of a multiplicity of deformable geometric structures of varying height, and some of the geometric structures having the greatest height have been treated such that the treated part of the surface exhibits lower tack than untreated self-adhesive mass exhibits, whereas some of the geometric structures having the lowest height have not been so treated.