Improving physical properties of fibrous structures

摘要

Structure has a number of continuous polymeric filaments, individual filaments extending from one side of the structure to the opposite side of the structure. The portions of the filaments on one side of the structure are of a first polymeric compsn. and the portions of the filaments on the opposite side of the structure are of a second polymeric compsn. different from the first polymeric compsn. - The structure is built up by a continuous fibre forming process where fibres are attracted to a surface by electrostatic potential, the compounds of the fibres being varied during prodn.