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US 10,023,330 B2Granted
Yarn packaging and delivery system
AssigneeInvista North America S.A.R.L.
InventorDavid W. Schumann
Life of this patent
Estimating the term…
Abstract
Included are apparatus and methods for preparing a yarn package for a small portion of yarn that provides substantially uniform tension on removal. The method includes providing an amount of yarn up to two pounds which is introduced to a small package with vacuum applied at the bottom of the container and vibration to assist yarn uniform packing of the yarn.
Claims15
A method for providing a yarn package comprising:
- (a) providing an amount of yarn greater than zero up to about two pounds;
- (b) passing a first end of said yarn through a yarn guide to a narrow end of a first cone-shaped air diffuser which reduces air velocity and prevents recirculation and through said first air diffuser to a wide end adjacent to a hollow extension portion,
- (c) passing said first end of said yarn through said hollow extension portion adjacent to a first opening of a hollow yarn container having a top and a bottom;
- (d) passing said first end of said yarn through said top of said yarn container and attaching said first end of said yarn to a second opening at said bottom of said yarn container, wherein porous media is present at said second opening of said yarn container so that yarn accumulates in said bottom above the second opening of said yarn container;
- (e) applying vacuum to a narrow end of a second cone-shaped air diffuser, wherein a wide end of said second air diffuser is adjacent to said second opening of said yarn container to promote uniform airflow across said bottom of said yarn container and into the vacuum;
- and
- (f) applying vibration to said yarn to facilitate downward movement and increase density of the yarn in said yarn container.
4 more elements
Dependencies are inferred from the claim text.