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US 2020/0370209 A1Published application
Process for heat setting twisted, bulked continuous filament yarn
AssigneeInvista North America S.A.R.L.
InventorsRonnie RITTENHOUSE, Wae-Hai TUNG
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Abstract
A multi-step process is disclosed for heat setting twisted, bulk continuous filament (BCF) yarn comprising the steps of developing crimp in the yarn under hot atmospheric air and heat setting the yarn by saturated steam treatment.
Claims30
A multi-step process for heat setting twisted, bulk continuous filament (BCF) yarn comprising the steps of:
- a) developing crimp in the yarn under hot atmospheric air;
- and
- b) heat setting the yarn from step (a) by pressurized steam treatment.
An apparatus for heat setting twisted, bulk continuous filament (BCF) yarn comprising:
- a) a bulking apparatus configured to bulk the yarn with hot atmospheric air to develop crimp;
- and
- b) a heat setting tunnel configured to heat set the yarn by pressurized steam injection.
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Dependencies are inferred from the claim text.