Foam molding method, foam molded article, and method for manufacturing foam molded article

A foam molded article configured to be coupled to a cover part, the foam molded article comprising:

• a core material including a contact part including a first portion defining a recess, a second portion spaced apart from the recess, and a third portion disposed between the first portion and the second portion;
• a skin material including a first edge part, a second edge part and a third edge part that are sealed with the contact part of the core material, the third edge part being disposed between the first edge part and the second edge part;
• and
• a foam layer formed in a sealed space formed between between the core material and the skin material, wherein
• the first edge part of the skin material and the recess defined by the first portion of the contact part of the core material define a self sealing part in which the first edge part of the skin material is housed in the recess,
• the second edge part of the skin material and the second portion of the contact part of the core material define a clamp sealing part in which the second edge part of the skin material and the second portion of the contact part of the core material are sealed by clamping by foam molding molds and the second edge part of the skin material and the second portion of the contact part of the core material extend parallel to each other, and
• the third edge part of the skin material and the third portion of the contact part of the core material define a switchover part between the clamp sealing part and the self sealing part, the switchover part being configured to be hidden by the cover part.