Invention Grant
- Patent Title: Method for producing pigment fragments with a predefined internal and/or external contour using a crack-forming layer, and pigment fragments
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Application No.: US16649188Application Date: 2018-06-05
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Publication No.: US11802212B2Publication Date: 2023-10-31
- Inventor: Maik Rudolf Johann Scherer , Kai Herrmann Scherer , Raphael Dehmel , Christoph Hunger
- Applicant: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- Applicant Address: DE Munich
- Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- Current Assignee: GIESECKE+DEVRIENT CURRENCY TECHNOLOGY GMBH
- Current Assignee Address: DE Munich
- Agency: WORKMAN NYDEGGER
- Priority: DE 2017008831.4 2017.09.21
- International Application: PCT/EP2018/000290 2018.06.05
- International Announcement: WO2019/057322A 2019.03.28
- Date entered country: 2020-03-20
- Main IPC: B42D25/378
- IPC: B42D25/378 ; C09C3/04 ; C09D11/037 ; B31F1/07 ; B32B43/00 ; B42D25/40 ; B42D25/425 ; B42D25/369 ; B42D25/373 ; B44C1/22 ; B44C1/24 ; B32B27/10

Abstract:
A method for producing pigments comprises the steps of creating a first layer on a substrate, structuring the first layer and detaching the pigments from the substrate. In the present case, the first layer is a crack-forming layer, so that the first layer is structured by the arising of cracks. Prior to detaching the pigments, a pigment layer is applied onto the first layer structured by the cracks.
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