Filtrona Richmond, Inc.

Jackie F Payne, Jr

Bennett Ward

Raymond J Nelson

Michael W Spencer

Donald F Nelson

Brian V Nutter

E Vaughan Yancey

Robert D Long

Roy B Pugh

Melt blown bicomponent fibers comprising a sheath of polyethylene terephthalate or a copolymer thereof and a core of nylon 6,6 and a reservoir or a nib in a writing or marking instrument comprising a porous element formed from such fibers bonded to each other at spaced points of contact. For use as a nib the core polymer may also be polybutylene terephthalate.

Method and apparatus for making NIBS and ink reservoirs for writing and marking instruments and the resultant products

A method and apparatus for incorporating an additive material into a fibrous web to be bonded into an elongated porous element by heating the fibers in a confined forming die with a heating medium adapted to bond the fibers to each other at spaced points of contact. An additive material is admixed with the heating medium and then the web of fibers is contacted with the heating medium/additive material mixture whereby the heating medium simultaneously carries the additive material into the fibrous web and heats the fibers to bond them into the porous element. The apparatus includes an adjustable venturi assembly through which the heating medium passes to create a pressure gradient adapted to aspirate a quantity of additive material and entrain a metered quantity of same in the heating medium. The method and apparatus are preferably used to uniformly inject a surfactant into a stream of steam for producing an ink reservoir for a writing or marking instrument from a web of melt blown bicomponent fibers having a sheath of polyethylene terephthalate.

Method and apparatus for applying additive to fibrous products and products produced thereby

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Chester, VA, United States of America

Jackie F Payne, Jr