Method and apparatus for reducing the moisture content of wet ya

Details Method and apparatus for reducing the moisture content of wet ya Method and apparatus for reducing the moisture content of wet ya

1988-04-18

1989-04-18

Tanner, Harry B.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 48, 34124, F26B 332

Patent

active

048214272

ABSTRACT:
A method and apparatus for reducing the moisture content of wet yarns are disclosed. Wet yarn is supplied to a pair of internally heated drier rolls which contact and spirally advance the yarn along the rolls to progressively dry the yarn. Heat is supplied to the rolls at a rate in excess of that necessary to reduce the moisture content to a predetermined level. Water is sprayed on areas of the rolls not in contact with the yarn to cool the contact surfaces. The moisture content of the yarn is measured subsequently to discharge and a signal is produced which corresponds to the moisture content. In order to achieve a desired moisture content, the spraying of water is controlled in response to the signal produced by measuring the moisture content so that the yarn discharged from the rolls approaches the predetermined level.

REFERENCES:
patent: 3097933 (1963-07-01), Kellogg et al.
patent: 4474643 (1984-10-01), Lindblad
patent: 4611410 (1986-09-01), Brossmer
patent: 4644668 (1987-02-01), Hull

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