cellulose production byproducts such as lignin and starch polymers as well as other branched or non linear polymers either naturally occurring or synthetic exemplary derivatives of starch and cellulose include various esters ethers and graft copolymers the polymer may be crosslinkable in the presence of a multifunctional crosslinking agent or crosslinkable upon exposure to actinic radiation or other type of radiation the polymer may be homopolymers of any of the foregoing polymers random copolymers block copolymers alternating copolymers random tripolymers block tripolymers alternating tripolymers derivatives thereof e g graft copolymers esters or ethers thereof and the like by u201c web u201d is meant a fibrous material capable of being wound into a roll by u201c nonwoven web u201d is meant a web of individual fibers or filaments which are interlaid and positioned in a random manner to form a planar material without identifiable pattern as opposed to a knitted or woven fabric nonwoven webs have been in the past formed by a variety of processes known to those skilled in the art such as for example meltblown spunbound wet laid dry laid and bonded carded web processes a nonwoven or woven fabric substrate or web can be made from natural or synthetic fabrics and may be composed of fibers of cotton cellulose lyocell acetate cellulose acetate rayon silk wool hemp spandex including lycra polyolefins polypropylene polyethylene etc polyamide nylon 6 nylon 6 6 etc aramids e g kevlar u00ae twaron u00ae nomex etc acrylic or polyester polyethylene teraphthalate trimethylene terephthalate polyurethane glass microfibers fiberglass etc by u201c fabric blends u201d is meant fabrics of two or more types of fibers typically these blends are a combination of a natural fiber and a synthetic fiber but can also include a blend of two natural fibers or two synthetic fibers.