Patent ID: 11945982
Assignee: FRAUNHOFER GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B  H | IPC B  C  H

Claim 0:
1. A method for producing an electrical sheet pack comprising the steps of:
a) providing an electrical sheet strip as a starting material for a plurality of sheet laminations for the electrical sheet pack,
b) coating the electrical sheet strip with an insulation layer on one or both side of the electrical sheet strip,
c) coating an area or part of the area of a first side of the electrical sheet strip with an anaerobically curing adhesive which cures under anaerobic conditions, the curing being catalyzed by a presence of a metallic catalyst and the anaerobically curing adhesive not including a cyanoacrylate adhesive,
d) rubbing with a rubbing device an area of a second side of the electrical sheet strip, the second side not having the anaerobically curing adhesive coating disposed thereon, the rubbing device comprising a surface structure containing the metallic catalyst, the metallic catalyst including a metal selected from the group consisting of a beryllium metal, a transition metal, a compound of at least one of the aforementioned, and an alloy containing at least one of the aforementioned,
e) separating each of the plurality of individual sheet laminations for the electrical sheet pack from the electrical sheet strip,
f) contacting the plurality of sheet laminations for the electrical sheet pack in each case by contacting one side of one of the plurality of sheet laminations with one side of the next one of the plurality of sheet laminations, and
g) curing the anaerobically curing adhesive.