US 12,456,564 B2
Multilayer magnetic sheet
Kouhei Miyano, Tokyo (JP); and Yasuo Kuriyama, Tokyo (JP)
Assigned to PROTERIAL, LTD., Tokyo (JP)
Filed by PROTERIAL, LTD., Tokyo (JP)
Filed on Mar. 8, 2023, as Appl. No. 18/118,831.
Claims priority of application No. 2022-061982 (JP), filed on Apr. 1, 2022; application No. 2022-061983 (JP), filed on Apr. 1, 2022; and application No. 2022-207292 (JP), filed on Dec. 23, 2022.
Prior Publication US 2023/0317330 A1, Oct. 5, 2023
Int. Cl. H01F 1/153 (2006.01); B32B 7/05 (2019.01); B32B 7/12 (2006.01); B32B 15/06 (2006.01); B32B 15/082 (2006.01); B32B 15/095 (2006.01); B32B 15/18 (2006.01); B32B 15/20 (2006.01); B32B 25/12 (2006.01); B32B 25/14 (2006.01); B32B 27/28 (2006.01); B32B 27/30 (2006.01); B32B 27/40 (2006.01)
CPC H01F 1/15333 (2013.01) [B32B 7/05 (2019.01); B32B 7/12 (2013.01); B32B 15/06 (2013.01); B32B 15/082 (2013.01); B32B 15/095 (2013.01); B32B 15/18 (2013.01); B32B 15/20 (2013.01); B32B 25/12 (2013.01); B32B 25/14 (2013.01); B32B 27/283 (2013.01); B32B 27/308 (2013.01); B32B 27/40 (2013.01); B32B 2250/40 (2013.01); B32B 2250/42 (2013.01); B32B 2307/208 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A multilayer magnetic sheet comprising:
at least one layer of a first laminate substrate layer; and
at least one layer of a second laminate substrate layer stacked with the at least one layer of the first laminate substrate layer in a thickness direction, wherein
laminate substrates are included in each of the at least one layer of the first laminate substrate layer and the at least one layer of the second laminate substrate layer, the laminate substrates each formed in a band shape having a short side and a long side are arranged in a plate shape such that the long sides are adjacent to each other, the laminate substrates each comprising two or more stacked layers of magnetic ribbons,
a direction in which the long sides of the laminate substrates in the second laminate substrate layer extend intersects a direction in which the long sides of the laminate substrates in the first laminate substrate layer extend,
the multilayer magnetic sheet further comprises an adhesive layer including a support formed in a band shape and an adhesive provided on each of a first surface and a second surface of the support between the magnetic ribbons adjacent in the laminate substrates included in the first laminate substrate layer or the second laminate substrate layer, and
a relationship of 0.2 mm≤(width A−width B)≤3 mm is satisfied, where the width A is a dimension of the adhesive layer in a direction intersecting a longitudinal direction of the adhesive layer and the width B is a dimension of the magnetic ribbons in a direction intersecting a longitudinal direction of the magnetic ribbons.