Shaped Body Having A Structured Surface For Reversible Adhesion

Abstract

A molded body with a structured surface for reversible adhesion to surfaces includes projections having an aspect ratio of up to 10. The structure can be easily detached from the surface by a lateral movement.

Claims

1. A molded body with a structured surface, comprising: a structuring comprising a multiplicity of projections which at least each have a stem and comprise an end face which faces away from the surface, wherein the projections have an aspect ratio of perpendicular height and mean diameter of up to 10.

2. An arrangement comprising at least two of the molded bodies as claimed in claim 1, wherein said molded bodies are arranged such that they contact a common surface alongside one another, and they are also individually movable at least laterally with respect to the common surface.

3. A method for the reversible adhesion of a molded body as claimed in claim 1 to a surface, comprising: contacting the end faces with the surface, such that an adhesive bond forms; and moving the molded bodies or at least one molded body of the arrangement at least laterally relative to the surface, such that the contact area between the end faces and the surface is reduced as a result of bending of the projections.

4. The method as claimed in claim 3, wherein all of the molded bodies are moved such that the moment acting on the surface as a result of the lateral movement is minimal.

5. A method for the reversible adhesion of an arrangement of molded bodies as claimed in claim 2 to a surface, comprising: contacting the end faces with the surface, such that an adhesive bond forms; and moving the molded bodies or at least one molded body of the arrangement at least laterally relative to the surface, such that the contact area between the end faces and the surface is reduced as a result of bending of the projections.

Description

[0060] The exemplary embodiments are schematically illustrated in the figures. Identical reference signs in the individual figures here designate identical or functionally identical elements or elements which correspond to one another in terms of their functions. Specifically:

[0061] FIG. 1 shows a schematic illustration of a molded body according to the invention;

[0062] FIG. 2 shows a schematic illustration of the adhesion to a surface;

[0063] FIG. 3 shows a schematic illustration of the detachment;

[0064] FIG. 4 shows a schematic illustration of an embodiment of the invention;

[0065] FIG. 5 shows a schematic illustration of an embodiment of the invention.

[0066] FIG. 1 shows a schematic illustration of a molded body 100 according to the invention. The molded body 100 has a multiplicity of projections 110 on the surface 130, said projections having end faces 120.

[0067] FIG. 2 shows how a molded body 100 according to the invention is contacted (at the top) with the surface 140 of an object 150. Here, the end faces 120 of the projections 110 come into contact with the surface 140 and said end faces and said surface adhere to one another. The object 150 is then bound to the molded body 100.

[0068] FIG. 3 shows the sequence of an embodiment of the detachment of an object 150 from the molded body 100. To this end, the molded body 100 is moved laterally (arrow at the top) relative to the object 150. As a result, stress(es) arise(s) in the projections 110 and the projections 110 bend. This leads to a partial detachment of the end faces 120 from the surface 140 of the object 150. This reduces the contacting area of the end faces 120, and the adhesive force with which the object 150 is bound to the molded body 100 is reduced, possibly until the object 150 has completely disengaged.

[0069] FIG. 4 shows a further embodiment of the invention. The molded body 200, which is structured in accordance with the invention, is here rotated relative to the object 250. This also results in shear loading and in the detachment by way of bending of the projections.

[0070] FIG. 5 shows a further embodiment of the invention. Here, the object 250 is contacted by a plurality of molded bodies 202 and 204, which are structured in accordance with the invention. Said molded bodies 202 and 204 are moved relative to the surface of the object 250. The movement is in this case selected such that the resulting moment, which is transmitted onto the object, is as small as possible. In the example, the two molded bodies are moved in opposite directions. This results in the detachment by way of bending of the projections.

REFERENCE DESIGNATIONS

[0071] 100 Molded body

[0072] 110 Projection

[0073] 120 End face

[0074] 130 Surface/Backing layer/Rear layer

[0075] 140 Surface for the adhesion

[0076] 150 Object

[0077] 200 Molded body

[0078] 202 Molded body

[0079] 204 Molded body

[0080] 250 Object