Patent No. EP3021466 (titled "Method For The Production Of Lamella Packets And Installation For Carrying Out The Process") was filed by Feintool Holding on Nov 10, 2015. The application was issued on Jul 5, 2023.
A method for manufacturing rotor or stator lamella packets involves applying adhesive to lamellae via an application head before stacking. For annular lamellae, the lamella is rotated around its axis, or the application head is moved around said axis, to position the application area. For non-annular lamellae designed as ring sections, a matrix rotatable around a central axis transports the lamella around this axis into the application head's area. In the non-annular configuration, the lamella is moved around the central axis by a defined, product-dependent angle of rotation. This process enables reproducible bonding between lamellae without requiring complex, multi-valve applicator heads.

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