Ring dyeing of yarn with indigo dye to produce an improved white core, An outer surface of the yarn is scoured prior to applying the indigo dye, and then applying the indigo dye is applied. Scouring parameters of the dyeing are used to limit a penetration of the indigo into the white core, so that the white core has mostly sections of white yarn, and the yarn has indigo dye on the outer surface, said parameters comprising limiting scouring parameters to at least 10% below current parameters used to scour the yarn.

Methods are directed to the use of a supercritical fluid for performing a dyeing of a material such that dye from a first material is used to dye a second material. A supercritical fluid is passed through a first material in a pressurized vessel. The supercritical fluid transports the dye from the first material to at least a second material causing a dye profile of the second material to change as a result of dye from the first material perfusing the second material.

A multifunctional continuous dyeing apparatus provided at a bottom with a main body within which are formed in a sequence, with reference to the feeding direction of the yarn, at least a first dyeing group for the yarn, provided with a respective first squeezing device of the yarn, an oxidation or diffusion/fixation group, placed downstream of the first dyeing group and arranged for the oxidation of the dyed yarn or for the diffusion/fixation of the dye in the fiber of the dyed yarn, and at least a second dyeing group of the yarn, arranged downstream of the oxidation or diffusion/fixation group and in turn provided with a respective second squeezing device of the yarn, where at least the first dyeing group, the first squeezing device, the oxidation or diffusion/fixation group and the second dyeing group are hermetically sealing enclosed by at least one covering case, integral at the top with the main body, and provided with a plurality of doors which are at least partially openable to perform the dyeing of the yarn in an environment exposed to air and which are reclosable to perform the dyeing of the yarn in an inert environment under nitrogen.

Methods are directed to the use of a supercritical fluid for performing a dyeing of a material such that dye from a first material is used to dye a second material. A supercritical fluid is passed through a first material in a pressurized vessel. The supercritical fluid transports the dye from the first material to at least a second material causing a dye profile of the second material to change as a result of dye from the first material perfusing the second material.

The present invention discloses a dual-sided integrated sherpa fabric and its manufacturing process, the dual-sided integrated sherpa fabric comprises a single jersey part and a sherpa part, wherein raw materials of the single jersey part are a combination of 100% polyester, 100% cotton, polyester-cotton blended yarn, viscose, viscose-polyester blended yarn and chinlon, while the raw material of the sherpa part is 100% polyester; the present invention utilizes a new process for manufacturing, which eliminates the need of glue during the production of fabrics by personnel, reduces environmental pollution, and improve health of consumers; moreover, because the fabric is integrally formed, the softness of the fabric is prevented from being decreased due to excessive addition of glue, so that the softness of the fabric can be improved by 50% and the elasticity of the fabric can be improved by 70%, the service life of the fabric is prolonged, and the manufacturing process is simple, which reduces the labor cost of enterprises, reduces the labor amount of personnel and increases the economic effect of enterprises.

The invention discloses a waterless fiber dyeing machine suitable for mixed fluid medium, including a dyeing tank, a carbon dioxide pressurizing system and a polar medium pressurizing system, a fiber loading system, a circulating dyeing system, a carbon dioxide recycling system, a polar medium separating and recycling system and an automatic unloading system. Since there are pressurizing systems and separating and recycling systems for carbon dioxide medium and polar medium, dyeing with the mixed fluid medium is realized in the waterless dyeing tank and the circulating dyeing system thereof; the hydrophobic carbon dioxide fluid medium is effectively modified, so that the dyeing performance and effect of the dye molecules on the hydrophilic natural fiber are improved. The fiber loading system and the unloading system can significantly improve the fiber loading efficiency, the discharging efficiency of the products.

An object of the present invention is to provide a transfer paper which allows smooth removal of a printed transfer paper from a design-printed fabric before steaming; and is unlikely to cause problems such as partial missing, color unevenness, color-development deterioration, etc. of the design on the fabric.

Provided is a transfer paper having a substrate and one or more coating layers, the substrate having a base paper and one or more nonaqueous resin layers on one side of the base paper, the one or more coating layers being located on the one or more nonaqueous resin layers,

the coating layer located outermost from the substrate, that is, the outermost coating layer, at least comprising a water-soluble polyester resin, a carboxylic acid-modified polyvinyl alcohol resin, an acrylic resin, a starch, and a white pigment,

the acrylic resin having a glass transition point (Tg) of 0 C. to 45 C. and a minimum film forming temperature (MFT) of 0 C. to 50 C.

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.

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.