Abstract: The invention relates to a method for the treatment and utilization of waste liquor containing at least polyester degradation products and originating from an alkaline pulping process for the extraction of cellulose raw material from blended textile waste which contains at least a cellulose component and a polyester component. In order to make the method environmentally friendlier and more resource-efficient, it is proposed that the method comprises the following steps: the evaporation of water from the waste liquor in order to precipitate the polyester degradation product from the waste liquor and to obtain a two-phase mixture having an aqueous phase and a solid phase including the polyester degradation product, b) the separation of the solid phase from the liquid phase, and c) the thermal/energetic utilization of the solid phase.

Abstract: The invention relates to a nonwoven as well as to a wipe, a face mask, and a dryer sheet including the nonwoven, which includes a network of molded bodies, the nonwoven, in the dry state, having a specific opacity of greater than or equal to 1.0%·m2/g. In order to create a nonwoven of low basis weight, which is easy to produce and has, without special modifications, a high specific opacity, it is proposed that the molded bodies are regenerated cellulosic molded bodies and are materially interconnected via node points to form the network, and the regenerated cellulosic molded bodies comprising monofilament sections extending between node points, whose diameter varies along their lengthwise extension and which have a diameter of less than or equal to 15 ?m for at least 90% of their lengthwise extension.

Abstract: A container for holding a fluid is disclosed. The container comprises an inner sleeve having a first opening and a second opening opposite the first opening, and an outer sleeve having a third opening and a fourth opening opposite the third opening. The inner sleeve and the outer sleeve are made of paper. The first opening has a first reinforcing element which extends into the first opening, and the third opening has a second reinforcing element which extends into the third opening. Further, the container comprises a functional insert. The outer sleeve has a larger diameter than the inner sleeve so that the inner sleeve is insertable into the outer sleeve through the fourth opening such that the insert is fastened between the first reinforcing element and the second reinforcing element.

Abstract: A process and a system for washing filaments. A filament to be washed and a washing liquid are passed in a countercurrent. The process and the system include two washing stages. In each washing stage the filament is brought into contact with a fresh washing liquid by a washing element in such a way that only an amount of the washing liquid is transferred to the filament, which adheres to the filament itself, for example by adhesion. The washing liquid is then separated from the filament again in each washing stage, and a separated washing liquid is collected in such a way that it is not mixed with the separated washing liquid from other washing stages of the process but is used as the fresh washing liquid in the washing element of a preceding washing stage.

Abstract: A method for providing a treated cellulose-comprising starting material (110), in particular a starting material for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) supplying a cellulose-comprising starting material (101) which comprises cellulosic fibers, and treating (20) the cellulose-comprising starting material (101), to obtain the treated cellulose-comprising starting material (110), such that the cellulose fibers of the treated cellulose-comprising starting material (110) comprises a predetermined fiber length distribution. Furthermore, a method for manufacturing a cellulosic molded body (102), a treated cellulose-comprising starting material (110), and a use of used textiles are described.

Abstract: A method for manufacturing a cellulosic paper material (150) is described. The method comprises: i) providing (105) used textiles as starting material (101), wherein the used textiles comprise cellulose and non-cellulosic foreign matters (in particular synthetic plastics and/or metal oxides), ii) at least partially depleting (120) the non-cellulosic foreign matters from the cellulose, to provide a depleted starting material (110), and iii) forming (170) the cellulosic paper material (150) from the depleted starting material (110). Furthermore, a cellulosic paper material (150) made of recycled used textiles and a use of used textiles for providing a cellulosic paper material (150) are described.

Abstract: A method of manufacturing a molded body which comprises cellulose, wherein the method comprises: i) providing a starting material which comprises cellulose and elastane, in particular wherein the elastane in the starting material is present separated from the cellulose, wherein the starting material is a solid body, and ii) generating the molded body which comprises cellulose, in particular by a lyocell-method or a viscose-method, on basis of the starting material, such that the regenerated cellulosic molded body comprises at least a part of the elastane of the starting material. The part of the elastane of the starting material is incorporated in the regenerated cellulosic molded body. Furthermore, a regenerated cellulosic molded body which comprises elastane incorporated in the cellulose, and which is manufactured according to a lyocell-method or a viscose-method.

Abstract: A process for the production of spunbonded nonwoven (1) is shown, wherein a spinning mass (2) is extruded through a plurality of nozzle holes (4) of at least one spinneret (3, 40, 50) to form filaments (5) and the filaments (5) are drawn, in each case, in the extrusion direction, wherein the filaments (5) are deposited on a perforated conveying device (10) to form a spunbonded nonwoven (1) and wherein the nozzle holes (4) of the spinneret (3, 40, 50) are arranged along a main axis (6) oriented in a transverse direction (12) to the conveying direction (11) of the conveying device (10) so that the spunbonded nonwoven (1) formed on the conveying device (10) extends in this transverse direction (12).

Abstract: The invention relates to a method for the production of lyocell staple fibers, comprising the steps in the following order: a) extruding filaments from a solution of cellulose in an organic solvent; b) precipitating the cellulose for the formation of continuous cellulose filaments; c) washing the cellulose filaments; d) contacting the cellulose filaments with a crosslinking agent; e) reacting the cellulose filaments with the crosslinking agent in a reaction chamber; f) washing the treated cellulose filaments; g) cutting the washed cellulose filaments into staple fibers; h) forming a nonwoven fleece from the staple fibers and pressing the nonwoven fleece; and i) finishing the nonwoven fleece and pressing the nonwoven fleece.

Abstract: A process (100, 101) for the production of spunbonded nonwoven (1) and a device (200, 201) are shown, comprising an embossing pattern (10), wherein a spinning mass (2) is extruded through a plurality of nozzle holes of at least one spinneret (3, 30) to form filaments (4, 40) and the filaments (4, 40) are drawn by a drawing air stream (5, 50), in each case, in the extrusion direction, with the filaments (4, 40) being deposited on a perforated tray (7) of a conveying device (8) to form a spunbonded nonwoven (1). So as to allow an efficient, technically simple and inexpensive introduction of the embossing pattern into the spunbonded nonwoven, it is suggested that the perforated tray (7) has an embossing structure (9) with an embossing pattern (10), the filaments (4, 40) are pressed into the embossing structure (9) by the drawing air stream (5, 50) and the spunbonded nonwoven (1) thus formed is provided with the embossing pattern (10).

Abstract: The present invention provides a lyocell fiber with increased water retention value and decreased crystallinity as well as a method for producing same and products comprising same.

Abstract: What is shown is a method for the recovery of raw materials from blended textile wastes, which includes the following steps in the given order: a) providing blended textile waste that includes at least a cellulose component and at least a polyester component, b) treating the blended textile waste in an aqueous treatment solution in order to depolymerize the polyester component and dissolve it in the treatment solution, c) separating the cellulose component from the treatment solution and recovering a cellulose raw material, d) filtering the treatment solution in order to remove foreign substances, particularly dyes and metal ions, from the treatment solution, and e) precipitating terephthalic acid from the treatment solution, separating the precipitated terephthalic acid, and recovering a terephthalic-acid-including polyester raw material.

Abstract: This invention relates to a crimped lyocell tow for use in stretch breaking, worsted or semi worsted spinning, its manufacture and use.

Abstract: The invention relates to a process for the production of spunbonded nonwoven and a device for the production of spunbonded nonwoven, wherein, in the process, a spinning mass is extruded through a plurality of nozzle holes to form filaments, the filaments are drawn in the extrusion direction, precipitated at least partially by being subjected to a coagulation air stream comprising a coagulation liquid and deposited to form the spunbonded nonwoven.

Abstract: A method of producing lyocell filaments employs a steam heatable spinneret having a rectangular shape with an aspect ratio of more than 2 and comprising at least a top housing and a nozzle frame. The spinneret is heated and used for spinning cellulosic filaments from a cellulose solution in a solvent. A lyocell process employs the spinneret.

Abstract: A process for the production of an oxidized polymer from a tetrakis hydroxyalkyl phosphonium compound comprising NH3 or at least one nitrogen compound comprising at least one NH2 or at least two NH groups, or NH3, comprising the steps of: (a) reacting at least one tetrakis hydroxyalkyl phosphonium compound with NH3 or at least one nitrogen compound in order to obtain a precondensate, wherein the molar ratio of the tetrakis hydroxyakyl phosphonium compound to the nitrogen compound is in the range of 1: (0.05 to 2.0), preferably in the range of 1: (0.5 to 1.5), particularly preferably in the range of 1: (0,65 to 1.

Abstract: A method for providing a treated cellulose-comprising mixed starting material (110), in particular a mixed starting material (110) for forming a, in particular regenerated, cellulosic molded body (102) is described. The method comprises: i) providing (10) a first starting material (101a) which comprises a lignocellulosic raw material, ii) providing (1) a second starting material (101b) which comprises a cellulose-containing lignin-free product, iii) mixing (15) the first starting material (101a) and the second starting material (101b) to a mixed starting material (101), and iv) at least partially commonly treating (20) the first starting material (101a) and the second starting material (101b) for obtaining the treated mixed starting material (101), in particular a mixed pulp.

Abstract: Silk woven fabric is known and renowned for its touch. The drawback of silk, however, is its price, its poor washability, and low resistance against certain chemical treatments. It is therefore the object of the invention to provide a silk-like woven fabric which overcomes these problems. According to the invention, this problem is solved by providing a silk-like woven fabric (2) made from weft yarns (4) and warp yarns (6), wherein at least one of the weft yarns (4) and the warp yarns (6) contains or consists of lyocell filaments (8). Especially twisted lyocell filament yarns are used, the resulting material has a touch comparable to silk and physical properties that are equal to or even surpass those of silk. Moreover, the lyocell filament yarns (4, 6) may have a higher twist than silk yarns, other cellulose yarns, or synthetic yarns.

Abstract: A process (100) for the recovery of solvent (1) from solvent-containing cellulosic particles (2) is shown, the process comprising the steps: a) extracting the solvent (1) from the cellulosic particles (2) by means of a liquid extraction medium (3), thereby obtaining a solvent-enriched extraction medium (5), and b) obtaining the recovered solvent (6) from the solvent-enriched extraction medium (5). In order to improve the efficiency of the process, it is proposed that in step a) the solvent (1) is extracted from the cellulosic particles (2) in a continuous flow extraction reactor (4), wherein the extraction medium (3) continuously flows through the extraction reactor (4) to extract the solvent (1) from the cellulosic particles (2).

Abstract: A method of recycling a mixed textile, wherein the method comprises: i) supplying the mixed textile, wherein the mixed textile comprises cellulosic fibers and synthetic fibers, wherein the synthetic fibers comprise at least one synthetic plastic, ii) at least partially depleting the synthetic plastic from the cellulose, and iii) further processing the depleted mixed textile after depleting.