<P>PROBLEM TO BE SOLVED: To provide a heat insulator and a soundproof material excellent in economy, quality and operability of construction, and gentle to the environment, and to provide soil for wall surface greening and rooftop greening. ??<P>SOLUTION: A cylindrical connected formed body of cellulose fiber is obtained by putting together two sheets of rectangular nonwoven fabrics or cloths, connecting and closing three side ends, leaving one side in the longitudinal direction, by a method such as sewing, welding and sticking, connecting a plurality of parts at prescribed intervals in the short direction by a method such as sewing, welding and sticking followed by dividing to make a cylindrical state, pouring into an opening of the divided cylindrical product, a filler which is obtained by mixing cellulose fiber made by loosening fiber of paper, and additives (such as wood chips, nut fiber, and ceramic fine particles), connecting and closing the opened ends in the longitudinal direction by a method such as sewing, welding and sticking, and making the product in a mat-like state. ??<P>COPYRIGHT: (C)2010,JPO&INPIT ??