초록

A self supporting pleated fluid filter medium having different fibers to provide pleats sufficiently self supporting to maintain pleated form during fluid filter treatment, the invention further including low melt fiber and an optional support frame and a method of making such pleated filter.

대표청구항 ▼

1. A filter frame member comprising: a border body member having an inner perimeter defining a flow-through passage to receive a passage covering pleated filter medium in the form of spaced pleats having spaced opposed crest sets and side flanks along opposed pleated sides between said opposed crest

1. A filter frame member comprising: a border body member having an inner perimeter defining a flow-through passage to receive a passage covering pleated filter medium in the form of spaced pleats having spaced opposed crest sets and side flanks along opposed pleated sides between said opposed crest sets, said filter medium being in sealed relation with said border member, said border body member including at least one foldable and erectable pleat support member fastened at its extremities to said border body member and extending therefrom in the form of at least one strip to transversely engage one of said opposed crest sets and be in supporting, conforming relation along and with said flanks of said pleated filter medium in spaced relation from the crests of said other crest set of said pleated filter medium.