Methods are directed to the use of a supercritical fluid for finishing a target material with a finishing material. One or more variables selected from temperature, pressure, flow rate, and time are manipulated to increase efficiencies in the finishing process. As temperature or pressure are decreased causing a change in the density of a supercritical fluid carbon dioxide, which in turn causes a precipitation of dissolved material finish with the carbon dioxide, other variables are maintained above threshold values to increase the uptake of the material finish by the target material. This improvement reduces time by limiting cleaning processes of the system, saves materials used in the cleaning process, and saves energy used to achieve cycles of the process, in aspects.

Methods are directed to the use of a supercritical fluid for finishing a target material with a finishing material. One or more variables selected from temperature, pressure, flow rate, and time are manipulated to increase efficiencies in the finishing process. As temperature or pressure are decreased causing a change in the density of a supercritical fluid carbon dioxide, which in turn causes a precipitation of dissolved material finish with the carbon dioxide, other variables are maintained above threshold values to increase the uptake of the material finish by the target material. This improvement reduces time by limiting cleaning processes of the system, saves materials used in the cleaning process, and saves energy used to achieve cycles of the process, in aspects.

Supercritical fluid (SCF) is used to scour a target material to leave scour elements, such as oligomers and oils from the target material. Carbon dioxide (CO.sub.2) is introduced into a pressure vessel also containing the target material to be scoured. The CO.sub.2 is raised in temperature and pressure to a SCF state. The CO.sub.2 is recirculated within the pressure vessel to scour the target material. An exchange of the CO.sub.2 is occurs allowing for the scoured elements to be removed from the CO.sub.2 and therefore from within the pressure vessel. Operation variables such as temperature, pressure, time, internal flow rate, and CO.sub.2 exchange are adjusted to achieve a scouring of the target material.

Supercritical fluid (SCF) is used to scour a target material to leave scour elements, such as oligomers and oils from the target material. Carbon dioxide (CO.sub.2) is introduced into a pressure vessel also containing the target material to be scoured. The CO.sub.2 is raised in temperature and pressure to a SCF state. The CO.sub.2 is recirculated within the pressure vessel to scour the target material. An exchange of the CO.sub.2 is occurs allowing for the scoured elements to be removed from the CO.sub.2 and therefore from within the pressure vessel. Operation variables such as temperature, pressure, time, internal flow rate, and CO.sub.2 exchange are adjusted to achieve a scouring of the target material.

Methods are directed to the use of a supercritical fluid for finishing a target material with a finishing material. One or more variables selected from temperature, pressure, flow rate, and time are manipulated to increase efficiencies in the finishing process. As temperature or pressure are decreased causing a change in the density of a supercritical fluid carbon dioxide, which in turn causes a precipitation of dissolved material finish with the carbon dioxide, other variables are maintained above threshold values to increase the uptake of the material finish by the target material. This improvement reduces time by limiting cleaning processes of the system, saves materials used in the cleaning process, and saves energy used to achieve cycles of the process, in aspects.

Methods are directed to the use of a supercritical fluid for finishing a target material with a finishing material. One or more variables selected from temperature, pressure, flow rate, and time are manipulated to increase efficiencies in the finishing process. As temperature or pressure are decreased causing a change in the density of a supercritical fluid carbon dioxide, which in turn causes a precipitation of dissolved material finish with the carbon dioxide, other variables are maintained above threshold values to increase the uptake of the material finish by the target material. This improvement reduces time by limiting cleaning processes of the system, saves materials used in the cleaning process, and saves energy used to achieve cycles of the process, in aspects.

A dyeing machine comprising at least one dyeing module in which a first squeezing device for a textile support, a first treatment tank, a central tank, a second treatment tank and a second squeezing device are located in sequence is described. The dyeing machine also includes a hydraulic system for feeding, circulating and alternately adjusting the levels of process fluids in the tanks. The tanks are preferably enclosed in a hermetically sealed upper covering shell. The two treatment tanks have the same shape, the same dimension and capacity characteristics, and are symmetrical with respect to a plane of symmetry lying in the central tank and arranged perpendicularly with respect to the direction of advance of the textile support. The dyeing machine is provided with means for moving the textile support, configured to advance the textile support alternately in both directions, i.e. either from the first squeezing device to the second squeezing device, sequentially through the tanks, or from the second squeezing device to the first squeezing device, again sequentially through the tanks.

A method for treating textile material (13) to attach dyes, such as synthetic or natural dyes, or to apply bleaches to said textile material (13). The method provides a first step of pre-impregnation of the textile material (13) with an impregnation liquid and a second step of heating the impregnation liquid and the possible dyes or bleaches, through contact of said textile material (13) with at least one heated drum (20), and subsequent vaporization of said impregnation liquid, said textile material (13) being selectively movable on said heated drum (20), subjected to an adjustable pressure higher than atmospheric pressure, a strip (18) being present and exerting on said textile material (13) an adjustable pressure against the heated drum (20).

Fabric sheet assemblies for delivering malodor control in wash liquor during a laundering process and methods for forming such fabric sheet assemblies are provided. In one example, a fabric sheet assembly includes one or more substrate layers including a first substrate layer. The first substrate layer is configured to absorb and/or adsorb malodor compounds from the wash liquor. An odor controlling composition is carried by the one or more substrate layers and is configured to be released into the wash liquor.

An embodiment herein provides a process for dyeing of textile materials 108 with supercritical fluid. One or more dye materials 102 along with additives (if required) are mixed with at least one suitable solvent 104 to obtain one or more dye solutions 106. A textile material 108 is pre-treated with the one or more dye solutions 106 to obtain a dye coated textile material 110. The dye-coated textile material 110 is exposed to the supercritical fluid 112 in a supercritical fluid dyeing vessel at controlled pressure and temperature. The supercritical fluid 112 solubilizes and diffuses the one or more dye materials 102 inside the surface, pores and capillaries of the textile material 108. The supercritical fluid vessel is then depressurized below supercritical condition to entrap the one or more dye materials 102 in the textile material 108 to obtain a supercritical fluid dyed textile material 114.