Process for making filament having unique tip and surface characteristics

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United States of America Patent

PATENT NO 9340903
APP PUB NO 20150361590A1
SERIAL NO

14301716

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Abstract

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A process for making a filament for use in a brush implement comprises providing a composite filament comprising an external material and at least one internal material, wherein the tip surface comprises the internal material surrounded by the external material, the internal material having longitudinal shrinkage characteristics that differ from those of the external material; and causing the internal material to shrink inside the external material, whereby the internal material comprising the tip surface sinks relative to the external material comprising the tip surface so that at least one crater is formed at the tip surface of the filament, the at least one crater comprising a bottom formed by the internal material and walls formed by the external material, the at least one crater having a surface edge of a predetermined size and a predetermined shape.

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Patent Owner(s)

Patent OwnerAddress
THE PROCTER & GAMBLE COMPANYATTENTION CHIEF PATENT COUNSEL ONE PROCTER & GAMBLE PLAZA CINCINNATI OH 45202

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carson, John Kit Liberty Township, US 8 124
Chan, John Geoffrey Maineville, US 63 1149
Mao, Xiaole Mason, US 12 136
Reno, Elizabeth Ann Brown Fairfield, US 14 159
Wen, Li Blue Ash, US 49 340

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