A meltblown shaped core, a method for forming a filter cartridge are shaped and meltblown equipment, and a filter cartridge formed thereby

摘要

A core material formed from a non-woven body having no filtering function, which is made of a synthetic polymer core fibers consecutive (57) of the length [Abstract] indeterminate, independent, synthetic non-woven polymer filtration continuous indefinite length providing a filter cartridge having an annular filtration zone of layers at least one is formed from the fiber. By forming the meltblown toward the forming mandrel a synthetic polymer-fiber stream to form a nonwoven core material in situ filter cartridge during manufacture is most preferred. Instead of the filtration fiber and the core is molten adhesive, so that they intertwined mechanically mainly with each other, and to solidify completely non-woven core material prior to melt-blown molded into core material filtration zone fiber. By forcibly cooling the preform, to minimize shrinkage of the significant filter cartridge with respect to the elapsed time (even if it can not be removed completely), the filter cartridge of a predetermined length from the filter cartridge preform on the upstream side of indefinite length can be cut. Furthermore, it is possible to install the cutting assembly in the transverse direction of the preform, but the cutting assembly can be moved longitudinally while the speed is synchronized with the preform cutting operation.