Abstract: A process for forming a fiber tow, involves a wet spinning procedure comprising the steps of: dissolving cellulose pulp N in an alkaline aqueous solvent to form a cellulose spin dope composition, spinning the cellulose spin dope composition in a coagulation having a p H of more than 7.0, preferably a pH of at least 10, to produce a fiber tow, and passing the produced fiber tow through a sequence of consecutive stretching and washing steps in which the formed fiber tow is washed with a washing liquid by a counter-current flow washing procedure.

Abstract: A method of making a phosphonated polybenzimidazole fiber comprises the steps of: spinning an untreated PBI resin into a PBI fiber; treating the PBI fiber with phosphoric acid, and thereby obtaining a PBI fiber with 1-25 wt. % phosphoric acid APU. A fiber is made with a polybenzimidazole (PBI) polymer with a phosphoric acid pick-up (APU) in the range of 1-25% (PBI-p fiber). The PBI-p fiber may have a LOI?50% and/or an initial thermal decomposition temperature in air of ?555° C.

Abstract: The invention relates to the technical field of textile printing and dyeing, in particular to a method for preparing yarn with cloud dyeing effect; dyes with more than one color are mixed, and a small amount of dispersing agent is added, so that the pigment is not completely uniformly mixed, and the yarn obtained by extrusion molding of the pigment mixed spinning raw material has a randomly distributed multi-color cloud dyeing effect, and the cloud dyeing yarn with multi-color cloud dyeing effect is prepared, and compared with the cloth blank prepared by the traditional single-color yarn, the prepared cloth blank has a more three-dimensional pattern effect.

Abstract: The invention relates to a process of treating a dyed fabric, in which fungi are used. The invention also relates to a package comprising a water impervious container and a fabric or a garment treated according to the process, and to a fabric or a garment as obtainable by the process of the invention.

Abstract: Provided is a pressure steam treatment apparatus of a fiber bundle and a producing method of a carbon fiber precursor fiber bundle for producing a carbonated precursor fiber bundle to suppress an influence of a leakage of a pressure steam to the outside of the apparatus so as to hold down a pressure steam supply amount to the minimum, simultaneously reduce a broken yarn, improve a yield ratio and have a high productivity. A pressure steam treatment apparatus is provided with labyrinth sealing chambers in back and forth of a pressure steam treatment chamber, and treats a plurality of fiber bundles traveling in parallel like a sheet along a fiber bundle travel path in a lump under a pressure steam atmosphere. The fiber bundle travel path of the labyrinth sealing chamber is divided in parallel to the fiber bundle.

Abstract: A device (100) is described, together with a continuous dyeing process with indigo and reduction dyes for warp yarn chains (3) and/or fabrics. The device (100) comprising at least one hermetically sealed dyeing compartment (1), and at least one hermetically sealed compartment (2) for the diffusion and fixing of the dye on the yarn (3). The compartment (2) is situated downstream of the dyeing compartment (1) and is functionally and hermetically connected to the dyeing compartment (1) by means of a tunnel (4). Means (12) are present inside the compartments (1, 2) and tunnel (4), for the entry of inert gas or deoxygenated air. One or more means (14, 14?) for the direct application of the dye onto the yarn (3) are also present inside the dyeing compartment (1), whereas at least one tank (8) for humidifying the environment and at least one means (7) for heating the yarn (3) leaving the dyeing compartment (1), are present in the compartment (2).

Abstract: A continuous dyeing device and related processes using indigo and/or other colorants for warp yarn chains and/or for fabrics, equipped with at least a first and a second dyeing compartments containing dyeing baths, the first and second dyeing compartments being enclosed, at least partially, in a hermetically sealed chamber. The device also includes at least one squeezing element interposed between the two dyeing compartments and a plurality of cylinders for heating and/or dehydrating the yarn and or the fabric, thereby increasing the diffusion and the absorption of the colorant. The cylinders are positioned downstream of the first dyeing compartment and squeezing element.

Abstract: A method for knitting denim comprising: dyeing yarn with a dyestuff to obtain dyed-yarn; knitting the dyed-yarn into a foundation layer and front layer to compose the denim, wherein the front layer is tensely tautened in intermittence with a tensile force greater than a tensile force on the foundation layer to make the foundation layer have random knots; and respectively washing two faces of the denim to remove the residual dyestuff. By knitting the yarn to compose the denim, the denim has even twilling patterns and excellent softness. By tensely tautening the front layer in intermittence during the knitting process, multiple random knots are generated on the foundation layer. Therefore, the achieved denim possesses multiple good features of softness, random knotting, and even twilling patterns.

Abstract: A method for treating fibers, yarns or textiles to improve the sensory effect for a user or weaver of a fabric article. The method treats the fiber, yarns or textiles with an emulsion containing 15-30% by weight of a mixture of waxes having melting points in the range of 35° C. to 60° C. including a lipophilic wax matrix; 10%-20% by weight of emulsifier which are at least one of alkyl or alkenyl oligoglycosides or alkyl ether sulfates, 1%-10% by weight of a crystal regulator which can be partial esters of C12-22 fatty acids with at least one of glycerol, polyglycerol and sorbitan. The mean particle size of the wax crystals is not greater than 6 ?m. The emulsion includes water and auxiliaries and additives.

Abstract: A process for forming a spaced dyed yarn, where a yarn is conveyed to a dye application station where a coordinated stream of dye is projected in a normal stream path adjacent to a first side of the yarn. The dye is applied to the yarn when a gas nozzle projects a stream of gas such that it impinges the stream of dye and diverts the stream of dye across said yarn to an alternative deflected path adjacent to the opposite side of said yarn, causing the dye to sweep over the yarn and impact and color the yarn. Upon deactivation of said gas nozzle, the stream of dye passes back across said yarn to the first side of the yarn, impacting and coloring the yarn for a second time.

Abstract: A continuous treatment system of yarns with process fluids, particularly for mercerization, wherein a bundle of threads to be treated is put into the reaction with a Venturi nozzle activated with process fluid, which entrains the bundle of yarn with it, and with a swirl distributor in the J-shaped treatment reactor, having an inner saddle-shaped guide surface for the downward and upward movement of the yarn in the process fluid bath.

Abstract: There is disclosed a method for producing a package of dyed thread, comprising: producing a package of undyed thread on a user package support which is dye permeable; and dyeing the thread on the user package support to produce a user package of dye thread; the package being wound so as to be suitable both for dying and orderly unwinding in use.

Abstract: The invention relates to a device for the compression crimping of a synthetic multifilament yarn, said device comprising a transport nozzle and a compression chamber. Said transport nozzle comprises a yarn channel by which means a yarn is guided to a compression chamber. Said compression chamber forms a section having a gas-permeable chamber wall, between a yarn inlet and an enmeshment outlet. According to the invention, the gas-permeable chamber wall comprises a friction surface consisting of material which is resistant to wear, on the inner side facing the yarn enmeshment. The constancy of the braking action produced by the friction on the yarn enmeshment can thus be significantly improved.

Abstract: The invention relates to a method and device for continuously treating synthetic fibers in a heat exchange chamber, in which the fiber to be treated comes into direct contact with the heat exchange medium. A sealing device, which is subjected to the action of a sealing medium, which is provided at the fiber exit opening and at the fiber entry opening with a supply line for the sealing medium, which is arranged in the proximity of the fiber exit opening or the fiber entry opening. The sealing medium is kept away from the fiber passing through the heat exchange chamber. This is achieved by removing the sealing medium before the heat exchange chamber or also by removing the heat exchange medium together with the sealing medium. A removal line for the sealing medium is arranged in the proximity of the heat exchange chamber. In addition, the heat exchanger is provided in a separable manner so that the fiber can inserted by removing one part.

Abstract: The sizing of open-end yarn is disclosed. The sizing of the open-end yarns is performed using a low concentration sizing liquor including from about 20 to 100 percent by weight of high viscosity cellulose ethers.

Abstract: A method and apparatus for space-dyeing yarns, particularly fine denier yarns, including the steps of wrapping a plurality of feed yarns with a sacrificial wrapper yarn to form a composite yarn bundle, space-dyeing the composite yarn bundle, removing the wrapper yarn from around the feed yarns, and separating the feed yarns into individual yarns for further processing. An intermediate yarn product for passing through the space-dyeing machine is disclosed, as well as the end product fine denier yarns after being separated from the bundle in which dyeing took place.

Abstract: The invention relates to a dyeing or washing installation (1) for narrow textile fabric (2), the narrow fabric (2) being passed through a dyeing or washing liquor, followed by removal of the excess amount. To develop further a dyeing or washing installation (1) of the type in question advantageously with regard to the application of dye and removal of excess amounts, it is proposed that the narrow fabric (2) is guided along a width-adapted suction nozzle (6), disposed downstream of the dyeing or washing liquor.

Abstract: In a method and apparatus for sizing a yarn sheet, the yarn sheet is passed over rollers through a wetting unit and a following roller nip that reduces the moisture content to a selected level. The wetted yarn sheet then passes through a sizing unit and over rollers forming a nip to reduce the sizing content to a desired level. The rollers of the wetting unit and the rollers of the sizing unit are in close proximity to minimize the reach of the yarn sheet there between and thereby minimize the heat loss in the yarn sheet. The reach is covered by a cover having a heater that extends over the yarn sheet reach to maintain the yarn sheet at a desired temperature as it enters the sizing unit. The temperature of the wetting agent bath in the wetting unit is 65°-95° C., with the temperature of the wetting agent being approximately 5°-10° C. higher than the temperature of the sizing agent bath.

Abstract: A method and apparatus for continuously cleaning a yarn moving through the device. A first scouring body has a yarn entrance and a yarn exit connected by a central cavity. Pressurized fluid is introduced through the yarn while the yarn is positioned within and moving through the central cavity.

Abstract: The invention relates to a method for the continuous dyeing of warp ends, in particular cotton warp ends, with indigo or other dyestuff groups which, after impregnating and squeezing out, require oxidation or thermal treatment for fixing. The method eliminates the disadvantages of traditional methods for the continuous dyeing of warp ends. In particular, the required bath amount is considerably reduced by this method. By using a new dyeing reactor (1), the residence time of the warp ends in the dyeing installation can be varied without having to increase the bath volume. The option of heating or cooling the dyeing bath enables a fixing temperature between below room temperature and over 100° C. to be chosen. Optimal conditions can thus be created for all dyeing methods which are habitual for warp ends.

Abstract: The invention pertains to an element (21) for washing or treating a yarn or similar structure with a fluid, the element comprising a cavity (23) for guiding the yarn and at least one fluid jet (26) for directing the fluid into the yarn, characterised in that the cavity (23) is tube-shaped and communicates with the outside of the element (21) via a slot (24). With the said element the formation of aerosel is avoided and the consumption of fluid is halved.

Abstract: A method and apparatus for continuously cleaning a yarn moving through the device. A first scouring body has a yarn entrance and a yarn exit connected by a central cavity. Pressurized fluid is introduced through the yarn while the yarn is positioned within and moving through the central cavity.

Abstract: An apparatus 10 and related process for enhancement of woven and knit fabrics through use of dynamic fluids which entangle and bloom fabric yarns. A two stage enhancement process is employed in which top and bottom sides of the fabric are respectively supported on members 22, 34 and impacted with a fluid curtain including high pressure jet streams. Controlled process energies and use of support members 22, 34 having open areas 26, 36 which are aligned in offset relation to the process line produces fabrics having a uniform finish and improved characteristics including, edge fray, drape, stability, abrasion resistance, fabric weight and thickness.