| 摘要 |
<p>1,174,837. Washing textile webs. ARTOS DR.-ING. MEIER-WINDHORST K.G. 8 Nov., 1967 [12 Nov., 1966], No. 50820/67. Heading D1P. Water-soluble treating media, e.g. acids and lyes, are washed from textile webs comprising natural or synthetic fibres or mixtures thereof, by washing them in a first stage with fresh water, squeezing them and then washing them in a second stage with electrolyte-free or desalinised water, the first and second wash stages being connected in series. The term fresh water is intended to refer to water having a lower concentration of the water-soluble treating media than is to be found in the web out of which the media are to be washed. The web may be squeezed again after a treatment time of at least 6-8 seconds in the electrolytefree or desalinised water. Water from the final squeezing and surplus water from any addition rinse process may be added to the first wash stage as extra fresh water. The washing water of the first wash stage may be heated and any condensate which forms inside or outside the washing machine during the heating may be used in the second wash stage. The web may enter the second wash stage at a medium temperature and before or along with the washing in electrolyte-free or desalinised water may be subjected to condensation heating to approximately 100‹C and may be maintained at this temperature and in a steam medium during the treatment time of the second wash stage. In the drawing the first four chambers 1, 2, 3 and 4 of a six chamber counter flow washing machine are connected one to another, fresh water being supplied at input A and withdrawn at output B, and chambers 5 and 6 also work on the counterflow principle, the water being fed into chamber 6 and passing from there to chamber 5 from which it is withdrawn by pump 12 through filter 10 containing an ion exchange resin and fed back to chamber 6. When the filter 10 becomes exhausted it is regenerated with hydrochloric acid and an alternatively usable filter 11 is provided in order to allow continuous operation.</p> |
