External covering material for motor vehicle, motor vehicle seat, and apparatus for producing the seat

A skin material for a vehicle, comprising:

• a general surface and a predetermined shape having an outer appearance which is equivalent to a joint portion obtained by an actual bonding of a plurality of skin materials that is constructed as a one-piece skin material in accordance with a transcription, the skin material comprising an outer appearance which is equivalent to a three-dimensional outer appearance obtained by actually bonding a plurality of skin materials in a three-dimensional form by one skin material.

A seat for a vehicle, comprising a skin material covering, the skin material covering comprising:

• a general surface and a predetermined shape having an outer appearance which is equal to a joint portion obtained by an actual bonding of a plurality of skin materials that is constructed as a one-piece skin material in accordance with a transcription, the skin material comprising an outer appearance which is equivalent to a three-dimensional outer appearance obtained by actually bonding a plurality of skin materials in a three-dimensional form by one skin material.

A manufacturing apparatus for a seat for a vehicle covered with a skin material, the manufacturing apparatus comprising:

• a forming metal mold for forming the skin material, the forming metal mold comprising a porous metal spray layer forming a cavity surface, and a porous backup layer holding the metal spray layer.