Yarn conditioning process
AssigneeTNS Mills, Inc.
InventorKiyohiro Tsuzuki
Life of this patent
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Abstract
An automated yarn conditioning apparatus and process is provided. This apparatus and process allows for unconditioned yarn packages to be brought from a source to a yarn conditioning station where they are conditioned and then ejected onto a takeaway conveyor. Yarn conditioning is achieved within an airtight chamber inside of a vessel. The yarn conditioning process used first evacuates the airtight chamber and then injects steam or other conditioning vapor into the airtight chamber while partially elevating the internal chamber pressure and/or temperature. Simultaneously with the conditioning of the yarn packages inside the airtight chamber, unconditioned yarn packages are brought to the conditioning station for placement inside the vessel when the prior conditioning step has been completed.
Claims11
A process of setting yarn twist comprising:
- introducing a quantity of yarn into a sealable container;
- creating a first partial vacuum within said container;
- elevating the temperature within said container;
- introducing a conditioning vapor into said container while said container is at said elevated temperature;
- restoring ambient conditions to said container;
- removing said quantity of yarn.
A process for conditioning an individual yarn package comprising:
- providing a yarn package having an unwanted property in the wound yarn;
- placing said yarn package into a yarn conditioning chamber having a first internal temperature;
- introducing a conditioning vapor into said conditioning chamber until a second internal temperature is achieved within said conditioning chamber;
- maintaining said second internal temperature for less than about 15 seconds until said unwanted property is eliminated;
- restoring ambient conditions to said chamber;
- removing said yarn package from said conditioning chamber.
An automated process for conditioning individual yarn packages comprising:
- providing a yarn conditioning chamber;
- conveying an individual yarn package having an unwanted property in the wound yarn to said conditioning chamber having a first internal temperature;
- placing said individual yarn package into said yarn conditioning chamber;
- introducing steam into said conditioning chamber until a second internal temperature is achieved within said conditioning chamber;
- maintaining said second internal temperature until said unwanted property is eliminated;
- restoring ambient conditions to said chamber;
- removing said individual yarn package from said conditioning chamber.
A process for conditioning an individual yarn package comprising:
- providing a yarn package having an unwanted property in the wound yarn;
- placing said yarn package into a yarn conditioning chamber;
- creating a first temperature within said conditioning chamber;
- increasing said temperature within said conditioning chamber by the introduction of said steam until a second temperature is achieved;
- maintaining said second temperature until said unwanted property is eliminated;
- restoring ambient conditions to said chamber;
- removing said yarn package from said conditioning chamber.
Dependencies are inferred from the claim text.