Abstract:
A system and a method for treating a textile material with ozone gas. The system includes: an ozone gas supply system, a hollow chamber fillable with ozone provided by said gas supply system, a textile-feeding port connected to said chamber and comprising a first liquid fillable tank, a textile-discharging port connected to said chamber and comprising a second liquid fillable tank, guide rollers, driving rollers, at least one tension compensator located inside the hollow chamber. The system is adapted for implementing the method, the latter including: using the system and providing liquid to said first and second tanks, providing ozone gas to said hollow chamber, driving the textile material to pass tensed through the system while controlling its tension using the tension compensators. The use of the tension compensators prevents the formation of ozone induced defects on the textile material.
Abstract:
An ozone cleaning system includes a cabinet defining a cleaning space, and an ozone generator disposed in fluid communication with the cleaning space and configured to produce and introduce ozone therein for cleaning items with ozone. An ozone neutralization unit is attached to the cabinet and includes an inlet and outlet tube each disposed within the cabinet. The ozone neutralization unit includes a heater/blower assembly in fluid communication with each tube and operable for heating and recirculating the ozone within the cleaning space. A method of operating the ozone cleaning system includes receiving an input to commence an ozone cleaning cycle, and then producing and introducing ozone into the cleaning space. The method proceeds by determining if the ozone cleaning cycle is complete, and then initiating and executing an ozone neutralization cycle to accelerate the rate of ozone neutralization after the ozone cleaning cycle is complete.
Abstract:
This invention relates to a method for decolorizing a dyed denim fabric through a dry ozone process to obtain an aesthetically pleasing decolorized look or fashionably faded look in the denim fabric. The method comprises three dry ozone treatment processes used alone or in combination thereof. The first dry ozone treatment process includes wetting a denim textile product with water and oxidizing it with ozone. The second dry ozone treatment process includes spraying water to desired areas of the textile product and oxidizing it with ozone. The third dry ozone treatment process includes loading the denim textile product and wetted cotton fabric scraps into a drum, and oxidizing them with ozone.
Abstract:
Economical, pollution-free treatment of textiles occurs in a low voltage electrochemical cell that mercerizes (or scours), sours, and optionally bleaches without effluents and without the purchase of bulk caustic, neutralizing acids, or bleaches. The cell produces base in the cathodic chamber for mercerization and an equivalent amount of acid in the anodic chamber for neutralizing the fabric. Gas diffusion electrodes are used for one or both electrodes and may simultaneously generate hydrogen peroxide for bleaching. The preferred configuration is a stack of bipolar electrodes, in which one or both of the anode and cathode are gas diffusion electrodes, and where no hydrogen gas is evolved at the cathode.
Abstract:
A method and an apparatus for the continuous pretreatment of a long cloth produced commercially in completely gaseous system, in which, by utilizing the combination of a desizing and scouring process in a low temperature plasma atmosphere and a bleaching process in an atmosphere of ozone and ultraviolet ray radiation, and thus entirely no application of liquid system.
Abstract:
A method and apparatus for artificially bleaching or lightening hair by exposing the hair to intense radiation of artificial light. The light is typically from a laser or flashlamp source and provides adequate intensity and power during the lifetime of the excited melanin molecule in the hair to substantially destroy at least some of the melanin molecules in the hair.
Abstract:
A photobleach system is disclosed comprising a synergistic mixture of an electron donor and a visible/ultraviolet radiation absorbing compound (a chromophore acceptor) which is capable of, in an excited electronic state, undergoing electron transfer from said electron donor. A composition comprising said photobleach system and use of the system or composition in bleaching dyes and textiles are also disclosed. A preferred electron donor is sodium sulphite. Preferred chromophore acceptors are water-soluble metallated phthalocyanines and naphtalocyanines.
Abstract:
Ozone is dissolved in a mixture of halogenated methane or ethane solvents, which may comprise (a) trichlorofluoromethane and 1,2-dichloro-1,1,2,2-tetrafluoroethane, (b) trichlorofluoromethane and monochlorodifluoromethane, (c) 1,1,2-trichlorc-1,2,2-trifluoroethane, or (d) chloroform and carbon tetrachloride. The respective ratios of solvents in each mixture may be, in (a) 2: 5, (b) 4: 2, (c) 5: 4, and in (d) 3.4: 2.4 by volume.
Abstract:
A method for localized or diffused decolorization of colored fabrics and garments by applying an accelerating substance comprising quaternary ammonium salts and subsequently treating with ozone.