b the melted core fiber is cooled and sets again in the protective film thereby enabling thermoforming without changing the structure of the fiber hereinafter descriptions of forming and thermoforming process of the fabric for automotive interior utilizing the fiber of the first embodiment are provided specifically for example as to a fabric for flooring of a car cotton having the protective film made of polyethylene terephthalate and the core fiber made of plant polyethylene of the first embodiment are blended and carding and punching are carried out to the cotton then the fabric is latex coated and dried at 150 to 160 degrees c and simultaneous treatment of polyethylene lamination and cooling is carried out thereby manufacturing the fabric non woven fabric for automotive interior subsequently the non woven fabric thus manufactured is heated at 150 to 180 degrees c to form the fiber into a shape conforming to an inner part of the automotive body and then cooling and press forming are carried out even after these treatments since the plant polyethylene as the core fiber does not flow out due to the protective film the non woven fabric made of the fiber of the first embodiment can be firmly formed without changing its texture moreover as.