A pleated filter is made from a monocomponent monolayer nonwoven web containing a bimodal mass fraction/fiber size mixture of intermingled larger size and smaller size continuous monocomponent polymeric fibers of the same polymeric composition. Rows of pleats are formed in the nonwoven web, and the pleated...http://www.google.de/patents/US7754041?utm_source=gb-gplus-sharePatent US7754041 - Pleated filter with bimodal monolayer monocomponent media
