US 12,246,341 B2
Method and device for manufacturing a base layer having different degrees of hardness and workpiece having different degrees of hardness
René Pankoke, Bielefeld (DE)
Assigned to Hymmen GmbH Maschinen- und Anlagenbau, Bielefeld (DE)
Appl. No. 17/630,952
Filed by Hymmen GmbH Maschinen- und Anlagenbau, Bielefeld (DE)
PCT Filed Sep. 28, 2021, PCT No. PCT/EP2021/076702
§ 371(c)(1), (2) Date Jan. 28, 2022,
PCT Pub. No. WO2022/064072, PCT Pub. Date Mar. 31, 2022.
Claims priority of application No. 10 2020 212 204.0 (DE), filed on Sep. 28, 2020.
Prior Publication US 2022/0355335 A1, Nov. 10, 2022
Int. Cl. B05D 1/32 (2006.01); B05D 7/00 (2006.01); B41M 7/00 (2006.01)
CPC B05D 1/32 (2013.01) [B05D 7/532 (2013.01); B41M 7/0081 (2013.01); B41M 7/009 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for manufacturing areas providing different degrees of hardness in a base layer (3), comprising the following steps:
step (S40): applying a masking on at least a partial area of the surface of the base layer (3), wherein the masking is configured to at least partially absorb electromagnetic radiation;
step (S50): irradiating the base layer (3) and the applied masking with electromagnetic radiation to set different degrees of hardness of the base layer (3),
wherein a degree hardness gradient in x-direction as a direction in parallel to the surface of the base layer (3) between the highest degree of hardness and the lowest degree of hardness is set within a length whose extent corresponds to less than 1 mm;
wherein the base layer (3) and the masking are complementary to each other such that at least one of the following conditions is met:
(a) while performing step (S50), an edge angle (a) between the base layer (3) and the masking is achieved, which is more than 20 degrees; and
(b) while performing step (S50), the height of the masking at the edge of the masking is at least 50% of the height of the masking in the center of the masking, and
wherein when performing step (S40), at least a portion of the base layer (3) or the entire base layer (3) is:
liquid, or
at least not already completely cured.