Apparatus for continuously thermally treating elongate textile p

Drying and gas or vapor contact with solids – Apparatus – With means to treat gas or vapor

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34 79, 34157, 34159, 68 18R, F26B 1308

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active

047110406

ABSTRACT:
An apparatus for continuously thermally treating an elongate textile product such as a slide fastener stringer tape having oil includes a housing having a preheated chamber for preheating the textile product and a main heating chamber for heating the elongate textile product after it has been preheated to give off an oily smoke. Part of the oily heated air in the main heating chamber is discharged out of the housing through a heat exchanger which supplies heated air of lower temperature to the preheating chamber. To remove a tar deposit from the heat exchanger, the supply of cold air to the heat exchanger is cut off and the heat exchanger is heated by the heated air discharged from the main heating chamber. The tar deposit is then melted and collected by a tar collector. The main heating chamber has inlet and outlet slots for the elongate textile product, the inlet slot opening into the preheating chamber and the outlet slot opening into an outlet chamber communicating with the preheating chamber. Since the preheating and outlet chambers are pressurized with the heated air of lower temperature, the heated air is prevented from leaking from the main heating chamber through the inlet and outlet slots and external cold air is prevented from entering the main heating chamber through the inlet and outlet slots.

REFERENCES:
patent: 3783649 (1974-01-01), Yamamoto et al.
patent: 4150494 (1979-04-01), Rothchild

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