Process to prepare a structured article using a removable protective layer and structured article obtained by said process
AssigneeBASF Coatings GmbH
InventorsSven Olle Krabbenborg, Tim Buscher
Life of this patent
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Abstract
Described herein is a process for producing a structured article (A1M1) in which a material (M1) including at least one micro- and/or nanostructured surface (SU1) containing a plurality of micro-scale and/or nano-scale surface elements is covered with an at least partially cured coating layer (C2) to provide a composite (M1C2), said composite (M1C2) is attached to an object (A1) and the coating layer (C2) is at least partially peeled off to provide the structured article (A1M1). Also described herein is a composite (M1C2) in which the surface elements of the material (M1) are covered by a protective coating layer (C2).
Claims18
A process for preparing a structured article (A1M1), said process comprising the following steps:
- (1) providing a material (M1) comprising at least one micro- and/or nanostructured surface (SU1) containing a plurality of micro-scale and/or nano-scale surface elements;
- (2) applying at least one coating composition (C2a) on the surface (SU1) of the material (M1);
- (3) at least partially curing the coating composition (C2a) on the surface (SU1) of the material (M1) to provide a composite (M1C2), wherein a dry film thickness of the at least partially cured coating composition (C2) of the composite (M1C2) is at least 5 μm;
- (4) at least partially attaching the composite (M1C2) to at least one object (A1) to provide an article (A1M1C2);
- and
- (5) at least partially peeling off the at least partially cured coating composition (C2) from the article (A1M1C2) to provide the structure article (A1M1), wherein the material (M1) provided in step (1) is obtained by
- a-i) applying a coating composition (P1a) to a substrate (F1) to provide a composite (F1P1a) and at least partially embossing the coating composition (P1a) using at least one embossing tool (E2) comprising at least one embossing mold (e2)
- (6) or
- a-ii) applying a coating composition (P1a) to at least a part of an at least partially embossed surface of at least one embossing tool (E2) comprising at least one embossing mold (e2) and optionally applying a substrate (F1)
- and
- b) at least partially curing the coating composition (P1a) to provide an at least partially embossed coating material optionally comprising the substrate (F1), wherein the coating composition (P1a) is in contact with the embossing tool (E2) during the curing, and
- c) removing the at least partially embossed coating material optionally comprising the substrate (F1) from the embossing tool (E2) to provide the material (M1).
Dependencies are inferred from the claim text.