SYSTEMS AND METHODS FOR MAKING FIBER WEBS

摘要

Systems and methods for forming fiber webs, including those suitable for use as filter media and battery separators, are provided. In some embodiments, the systems and methods involve designs which allow improved control of the fiber web forming process. For example, in certain embodiments involving the flowing of more than one fiber mixtures, the amount of mixing of the fiber mixtures may be controlled to produce fiber webs having different structural and/or performance characteristics. In some embodiments, the systems and methods can be used to form fiber webs having a gradient in a property across a portion of, or the entire, thickness of the fiber web.

主权项

1. A method of forming a fiber web, comprising:
introducing a fiber mixture into a flow zone of a system for forming a fiber web, wherein the system includes a pressure former comprising a top surface and a pivoting member connected to a portion of the top surface, collecting fibers from the fiber mixture downstream of the flow zone in a fiber web forming zone, wherein the fiber web forming zone comprises a forming wire portion; and forming a fiber web comprising fibers from the fiber mixture.