Textiles: cloth finishing – Expanding device for textile webs – Including heater or dryer
Patent
1990-02-16
1991-04-09
Schroeder, Werner H.
Textiles: cloth finishing
Expanding device for textile webs
Including heater or dryer
28167, F26B 1310
Patent
active
050052721
ABSTRACT:
In setting a web, e.g. a wire sieve or felt in a heating and setting plant, air of a desired temperature is blown towards said web. The air in the air box is heated to a desired starting temperature, the air meanwhile being redirected to circulate in the air box without flowing towards said web to any substantial degree. When the air has reached the starting temperature, it is redirected to be blown towards the running web. This procedure may be repeated as desired until the web is set as desired.
A setting plant for setting webs comprises an air box with two portions between which the web may run. At least one portion of the box acting as an active box portion, comprises equipment for air treatment. In order to heat the circulating air the flow connection between the inlet side of the equipment for air treatment, and openings in the box portion towards the box portion, and the flow connection between the outlet side of the equipment for air treatment and the nozzles, respectively, may be short-cut by the aid of suitable means. In short-cutting most of the air will circulate inside the box portion and only a negligible portion of the air will pass out to the web.
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Calvert John J.
Schroeder Werner H.
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