Self-supporting pleatable and embossable meltblown nonwowen article, process for its manufacture and its use as filter material

摘要

Self-supporting, pleatable and embossable meltblown nonwoven articles are manufactured according to the invention by internal reinforcement of raw nonwoven articles with natural or synthetic impregnating agents comprising aqueous or non-aqueous systems, sealing of the pores being prevented and the pore structure being largely retained. Additives for modifiying the properties of the nonwoven article can be added to the impregnating agent liquor. The meltblown nonwoven articles according to the invention are particularly suitable for use as filter materials.