Panel manufacturing device, panel manufacturing method, and panel

A panel manufacturing method comprising:

• transferring, in a transfer direction, a panel having a core member that includes a thermoplastic resin and is formed in a corrugated shape and a first faceplate that includes a thermoplastic resin, is formed in a plate shape, and is joined to a surface on one side of the core member;
• supplying, toward a surface on the other side of the core member, a second faceplate that includes a thermoplastic resin and is formed in a plate shape;
• and
• joining the core member and the second faceplate to form a joined part,
• wherein the first faceplate has a plurality of through-holes formed through the first faceplate for access to the core member, and
• forming the joined part includes forming the joined part via the through-hole of the first faceplate.

A panel comprising:

• a core member that includes a thermoplastic resin and is formed in a corrugated shape;
• a first faceplate that includes a thermoplastic resin, is formed in a plate shape, and is joined to a surface on one side of the core member;
• and
• a second faceplate that includes a thermoplastic resin, is formed in a plate shape, and is joined to a surface on the other side of the core member,
• wherein the first faceplate has a plurality of through-holes formed through the first faceplate for access to the core member, and
• the second faceplate has a plurality of joined parts that are provided in correspondence with the plurality of through-holes and are formed by the joining of the second faceplate to the core member.