Laminated core, method of manufacturing same, and electric motor

A laminated core comprising:

• a plurality of electrical steel sheets which are stacked on each other and of each of which both surfaces are coated with an insulation coating;
• and
• an adhesion part which is provided between the electrical steel sheets adjacent in the stacking direction and adheres the electrical steel sheets to each other,
• wherein an adhesive for forming the adhesion part includes a first phase and a second phase,
• wherein the adhesion part has a sea-island structure of the first phase which is a sea structure portion and the second phase which is an island structure portion,
• wherein the first phase contains an epoxy resin, an acrylic resin, and a curing agent,
• wherein the first phase has an SP value of 8.5 to 10.7 (cal/cm3)1/2,
• wherein the second phase contains an elastomer,
• wherein the second phase has an SP value of 7.5 to 8.4 (cal/cm3)1/2,
• wherein an amount of the first phase is 50% by volume or more with respect to a total volume of the adhesion part, and
• wherein an amount of the epoxy resin is 50% by volume or more with respect to a total volume of the first phase.