PURPOSE: To provide a web material easy for waste disposal by, after needle- felting-processing, forming a biologically decomposable coating layer or laminating and integrating high density web, etc., having the same abilities.

CONSTITUTION: Natural fibers such as cotton and other cellulose fiber are needle-felting-processed to form web having a wt. of about 300-3000 g/m2 or 50-500 g/m2. Then at least one of the outside of the web is coated with a biologically decomposable material such as potato starch and/or alginates. Or high density web, reinforced fabric, reinforced knit, or reinforced layer made of the biologically decomposable fiber are adhered by the biologically decomposable adhesive such as potato starch, or laminated to integrated by sewing, knitting and/or stiching. And, according to use, at least one surface of the processing web is laminated with aluminum foil, or the composed fibers are coated with a waterproofing agent, antiseptic, mildew resistant agent, larvicide or fire- resistant agent, etc.