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AssigneeProfil Industria E Comercio De Fios Ltda
InventorGustavo De La Rue
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The present invention refers to yarns made of hollow trilobal cross section filaments, comprising from 90 to 99% of polypropylene, and between 1 and 10% of other polyolefin resins, for the application on dental floss. This invention additionally refers to the production process of the yarns made of hollow trilobal cross section filaments. This invention additionally refers to dental floss comprising hollow trilobal cross section filaments, and the use of hollow trilobal cross section filaments for the manufacture of dental floss. The yarn described in this invention has linear density or title in the range from 400 to 1200 dtex, and it is twisted with a twist level from 10 to 160 twists per meter.
-8. (canceled)
A yarn comprising a plurality of filaments entangled with one another, each filament having a hollow trilobal cross-section, and each filament comprising polypropylene and a masterbatch comprising a polyolefin resin.
A yarn comprising a plurality of filaments entangled with one another such that each filament is in contact with one or more adjacent filaments, each filament being hollow such that the yarn has a plurality of apertures, and each filament having a trilobal cross-sectional shape, wherein each filament is formed from polypropylene and optionally a masterbatch comprising a polyolefin resin.
A process for manufacturing a yarn comprising a plurality of filaments entangled with one another and each having a hollow trilobal cross-section, comprising:
Dependencies are inferred from the claim text.