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AssigneeFiltrona Richmond, Inc.
InventorRichard M. Berger
Estimating the term…
A fiber spinning device and process for manufacturing a web of fibers comprising a homogeneous mixture of fibers of different characteristics. Monocomponent fibers of different polymers can be extruded side-by-side from the same die system. Sheath/core bicomponent fibers can be alternated with monocomponent fibers formed of the same core polymer as used in the bicomponent fibers. Bicomponent fibers having a common core polymer and different sheath polymers can be extruded from alternate spinneret orifices in the same die plate. Multiple distribution plates are provided with surface grooves or depressions to direct polymer materials from independent sources to only selected spinneret openings in an array of spinneret openings while maintaining the polymers segregated from each other. Unique products formed from the improved mixed fiber technology are useful as high efficiency filters in various environments, coalescent filters, reservoirs for marking and writing instruments, wicks and other elements designed to hold and transfer liquids for medical and other applications, heat and moisture exchangers and other diverse fibrous matrices.
A fiber spinning process comprising the steps of
A fiber spinning device comprising
A reinforced filter element comprising a homogeneous web of mixed fibers of different denier bonded to each other at spaced points of contact to form a tortuous path for the passage of a fluid therethrough, at least some of said fibers being larger than other of said fibers to provide the filter element with increased strength, the finer fibers providing enhanced filtration.
A high filtration filter element comprising a homogeneous web of mixed fibers bonded to each other at spaced points of contact to form a tortuous path for the passage of a fluid therethrough, at least some of said fibers being positively charged and others of said fibers being negatively charged, said positively charged fibers attracting negatively charged impurities in a fluid passing through the filter element, and said negatively charged fibers attracting positively charged impurities in a fluid passing through the filter element.
A coalescing element formed from a homogeneous web of mixed fibers, some of which comprise a material selected from the group consisting of homopolymers and copolymers of fluorocarbon polymers and chlorinated fluorocarbon polymers, and the remainder of which comprise a bonding polymer, said fibers comprising said material having an average diameter of less than 10 microns and being bonded to each other at spaced points of contact by said bonding polymer to form a porous matrix.
A wicking element formed from a homogeneous web of mixed fibers, some of which comprise nylon and the remainder of which comprise a bonding polymer, said fibers comprising nylon having an average diameter of less than 10 microns and being bonded to each other at spaced points of contact by said bonding polymer to form a porous matrix.
A wicking element formed from a homogeneous web of mixed fibers, some of which comprise polyvinyl alcohol and the remainder of which comprise a bonding polymer, said fibers comprising polyvinyl alcohol having an average diameter of less than 10 microns and being bonded to each other at spaced points of contact by said bonding polymer to form a porous matrix.
Dependencies are inferred from the claim text.