Title:
METHOD OF CLEANING TEXTILE PRODUCT
Document Type and Number:
WIPO Patent Application WO/2006/126316
Kind Code:
A1
Abstract:
An excellent method of cleaning a textile product capable of removing oligomers, the residue of dyes, and the like completely (or substantially completely) without causing insufficient cleaning or overcleaning by employing a treating apparatus of a type which treats a textile product by circulating a treating liquid. The cleaning method comprises a high temperature treating step of treating a textile product placed in a treating bath by bringing a textile product into contact with a treating liquid circulating through the treating bath while heating the treating liquid to high temperature by means of an indirect heat exchanger provided at a portion of the circulation path, and a liquid replacing/cleaning step of supplying cleaning water gradually into the treating bath while discharging the high-temperature treating liquid gradually therefrom and lowering the liquid temperature in the treating bath down to a predetermined point while keeping the quantity of liquid in the treating bath constant by exchanging heat directly between the high-temperature treating liquid being discharged and the cleaning liquid being supplied and equalizing the quantity of high-temperature treating liquid being discharged to the quantity of cleaning liquid being supplied. An optimal value of the temperature gradient in the liquid replacing/cleaning step is preset and the actual temperature gradient is equalized or approximated to the optimal value by performing heating or cleaning through the indirect heat exchanger.
Inventors:
SHIMIZU TORU (JP)
Application Number:
PCT/JP2006/303804
Publication Date:
November 30, 2006
Filing Date:
February 28, 2006
Export Citation:
Assignee:
HISAKA WORKS LTD (JP)
SHIMIZU TORU (JP)
SHIMIZU TORU (JP)
International Classes:
D06B3/28
Foreign References:
| JPH08269863A | 1996-10-15 | |||
| JPS6359467A | 1988-03-15 | |||
| JPH01306669A | 1989-12-11 | |||
| JPH1112916A | 1999-01-19 |
Attorney, Agent or Firm:
Fujimoto, Noboru (15-14 Minamisemba 1-chome, Chuo-k, Osaka-shi Osaka 81, JP)
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