Non-woven fabrics are broadly defined as sheet or web structures bonded together by entangling fiber or filaments (and by perforating films) mechanically, thermally, or chemically. They are flat, porous sheets that are made directly from separate fibers or from molten plastic or plastic film. They are not made by weaving or knitting and do not require converting the fibers to yarn.
The term ‘composite non-wovens’ refers to a category of materials different from ‘non-woven composites’, which consist of a resinous matrix reinforced by an embedded non-woven fabric. Composite non-wovens are created by a modern and innovative industry employing non-woven technologies to bring together fibers of different origins, different characteristics or a combination thereof.
Combination of different non-woven preforms prepared either by employing a variety of process technologies or by combining non-woven preforms with traditional textile preforms into a consolidated structure can also result in the creation of composite non-wovens. Composite non-wovens can provide an engineered solution by creating multi-functional products as well as an economical solution by eliminating manufacturing processes and replacing two or more products by a single product.