Resin sheet and resin molding

A resin sheet formed from a thermoplastic resin, comprising:

• a core layer, the core layer being a foam resin layer;
• and
• a first skin layer and a second skin layer, each located outward of the core layer as determined along a thickness direction of the core layer such that the first skin layer and the second skin layer are on opposite sides of the core layer and sandwich the core layer,
• the core layer, the first skin layer and the second skin layer are continuously formed,
• wherein the core layer includes a first region and two second regions, each of the second regions located between the first region and an associated one of the first skin layer and the second skin layer,
• each of the second regions has a lower average porosity than the first region, said average porosity being lower than 50%,
• the average porosity of each second region decreases going from a center of the core layer as determined along the thickness direction toward a surface of the resin sheet,
• the thermoplastic resin has a defection temperature under load not lower than 100° C.,
• the first skin layer and the second skin layer have a thickness of 5 to 50% of the thickness of the resin sheet, and
• the thermoplastic resin of the core layer includes an engineering plastic and/or a super engineering plastic.