Title: Process for the uniform dyeing of textile material webs with the aid of a uniform pre-drying

Abstract: Process for the uniform pre-drying of damp textile material webs, subsequent to a continuous wet treatment operation, including measuring the moisture content remaining on the textile material, wherein, in the course of the material run, immediately behind an infrared pre-drying tunnel for the continuously fed material, several measuring positions are arranged transversely to the transport direction of the material, and measurements of the residual moisture are made by means of a contactless method, determining measuring pulses in this manner and transmitting these to the control elements of the preceding pre-dryer and within the heating power is controlled of several separately controllable heating fields, distributed across the width of the drying tunnel, in agreement with the measured values of the moisture.

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Inventors: von der Eltz, Hans-Ulrich (Frankfurt am Main, DE, US)
Glander, Siegfried (Bad Soden am Taunus, DE, US)

Application Number: 858897
Filing Date: 1977-12-08
Publication_date: 1980-05-13
Assignee: Hoechst Aktiengesellschaft (Frankfurt, DE)
Primary Class(es): 34/266 219/388
Other Classes:
US Patent Ref:

3040807	Jun, 1962	Chope	34/48.
3214845	Nov, 1965	Huffman	34/48.
3358378	Dec, 1967	Downs	34/48.
3731520	May, 1973	Hickman et al.	34/48.
3793741	Feb, 1974	Smit, Jr.	34/48.
3848342	Nov, 1974	Bartles et al.	34/48.

Other Refs:
Primary Examiner: Camby, John J.
Assistant Examiner:
Attorney: Curtis, Morris & Safford