DE2248493C2 - Device for the continuous heat treatment of web and tape-shaped textile goods - Google Patents

Description

The invention relates to a device according to the preamble of the patent claim and to this extent forms an addition to patent P 22 28 912.9.

The related application and its main application deal with influencing the flow path of the treatment medium in such a way that the medium only strokes along the good parallel to the transport direction, as this is the only way in which the known Hotflue constructions unavoidable edge drainage due to temperature uniformity over the width of the web is to be avoided. Only if the medium is uniform across the width of the web Temperature is blown into the loop and in a substantially constant direction flowing through the length of the running loops, a uniform treatment of the web of material over the Width can be guaranteed. The invention according to the main application solves this problem.

The ventilation system in sieve drum machines is known to have a considerable effect on the treatment Advantage. However, the sharp effects of heat on sensitive goods can be a disadvantage. The consequence when heat treatment, especially when fixing or thermosolving, perforation marks are z. B. on a tissue, which is due to a different temperature distribution over a small unit area Ventilation at a perforation hole and a cone

Claims (1)

Claim: Device for continuous heat treatment, such as drying, of web-shaped or tape-shaped Textile goods with a housing and with two rows of spaced apart in this housing Sieve drums around which the material is guided through the device in a meandering manner, and with a the device in a treatment chamber and in a fan chamber dividing the longitudinal wall, a radial fan circulating the treatment medium in the fan chamber Is arranged in the middle between the two rows of screen drums, on the pressure side of which the treatment agent exits both upwards and downwards and its fan intake port assigned over the entire treatment chamber length of a treatment compartment extending suction channel is, and with parallel to the screen drums nozzle covers arranged across the treatment chamber od. dgL, wherein the suction channel from the the device dividing the longitudinal wall, a partition that extends over the entire length of the housing and extends over the height of the loops, as well as upper and lower cover surfaces consists, with each sieve drum as an outgoing from the suction channel, on one of its long sides at least partially open suction box is formed, one end of which with an opening in the partition is connected, and wherein the screen drums against the surface covered by the material dtn induced draft are covered, according to patent P 22 28 9125, characterized that only the first, possibly only the first or the first two screening drums (5) in the one covered by the good (9) Area against the induced draft are covered. clock heating on the one remaining on the side of the hole Material. An improvement in the appearance is achieved through a fine mesh Reached sieve mesh, which is stretched over the sieve drum. However, in some processes the mentioned phenomena cannot be completely eliminated. About the perforation marks on sieve drum heat treatment machines To avoid completely, the invention proposes after the main application, ίο to cover the screening drums against the induced draft in the area covered by the material. This measure of course contradicts the ventilation system that can be achieved on a sieve drum. This prevents ventilation. Nevertheless - as tests have shown - the drying effect is very good because of the high air circulation inherent in a sieve drum unit, but the perforation marks no longer appear.
Of course, the effect of heat treatment with ir.it in your well-covered area of the screen drum is not as good as that when ventilation is enabled. The invention is based on the object of combining the advantages of both systems, that is to say perforation impressions to avoid in a generic device, on the other hand, the good heat treatment efiect to obtain. The solution to the problem consists in designing the device of the type mentioned initially that only the first, possibly only the first or the first two screening drums in the area covered by the material against the induced draft are covered. If such a sieve drum device ζ. B. for thermosoling fabrics If used with synthetic fiber content, the fabric on the first drum screen is just so far warmed up and the color fixed, so that a perforation impression no longer occurs during the subsequent ventilation can appear.