Patent classifications
Y02P70/62
METHOD AND DEVICE FOR CLEANING SPINNERETS WHILE PRODUCING CELLULOSE SPUNBONDED NONWOVEN FABRIC
The present invention relates to a method for cleaning a spunbonding spinneret for the production of cellulosic spunbonded nonwoven fabric from a solution of cellulose in an aqueous organic solvent by extruding the solution through nozzle holes of the spunbonding spinneret to form filaments and stretching the filaments in the direction of extrusion by means of a gas stream, during which method contaminations containing cellulose will accumulate on the spinneret surface. The method according to the invention comprises the steps of: a) spraying the contamination with an aqueous fluid precipitating the cellulose; and b) detaching and carrying away the contamination by means of the gas stream.
Recycling of cellulosic textiles
A method for recycling textiles comprising cellulose with the following steps of: optionally disintegrating the textile, Swelling the cellulose, under reducing conditions, wherein at least one reducing agent is present at least during a part of the swelling, and then performing at least one of the following two bleaching steps in any order: i) bleaching the material with oxygen at alkaline conditions with a pH in the range 9-13.5, and ii) bleaching the material with ozone at acid conditions below pH 6. An advantage is that the yield is improved at the same time as excellent decolourization is achieved. If the recycled material is used in viscose manufacture, the risk of clogging nozzles and so on is reduced.
Recycling of acid-superbase conjugate ionic liquids by water removal in the lyocell spinning process
According to an example aspect of the present invention, there is provided A process for the production of a cellulose filaments or films, comprising the steps of dissolving a cellulose substrate in an ionic liquid consisting of the superbase cation 7-methyl-1,5,7-triazabicyclo[4.4.0]dec-5-enium [mTBDH]+ and an anion to produce a solution forming a spinning dope, said anion being derived from an acid which is present at a stoichiometric excess to the superbase, extruding the spinning dope through a spinneret in a coagulation bath containing water to form filaments or films from the solution, withdrawing ionic liquid in an aqueous mixture with water from the coagulation bath, recovering the ionic liquid [mTBDH][OAc] from the aqueous mixture by removing water and optionally recycling the recovered ionic liquid to the dissolution step.
FABRIC AND MANUFACTURING METHOD THEREOF
The disclosure provides a fabric suitable for an inner light cloth of advertisements. The fabric includes a yarn woven into the fabric with a whiteness of at least greater than 90%, in which the yarn is composed of fibers made from a white masterbatch. A manufacturing method of a fabric suitable for an inner light cloth of advertisements is also provided.
DEVICE FOR DRAWING FILAMENTS TO FORM A NONWOVEN FABRIC
A device draws filaments to form a nonwoven fabric. The device has a nozzle carrier, the nozzle carrier having an elongated drawing channel, wherein the drawing channel comprises a filament inlet and a filament outlet, the drawing channel being provided on opposite sides with air nozzles generating a downward air flow, the air nozzles being connected to an air chamber on both sides of the nozzle carrier through an air channel, a rectification device being provided between the air channel and the air chamber, the rectification device having at least one rectification chamber, a rectification wall of the at least one rectification chamber being provided to be partially ventilated. The air flow is temporarily confined in a small space by the space restriction of the rectification chamber, and as air flows, the air flows out of the partially ventilated area, which acts as a “combing” of the air flow.
DOUBLE JERSEY KNITTED FABRIC WITH YARN SELECTION
A method for producing a double jersey fabric on a double jersey, single jacquard circular knitting machine includes steps of knitting a front side of the fabric on a cylinder (C) and knitting the rear side of the fabric on a dial (D) of the machine, knitting a base yarn on a rear side of the fabric, except for connecting points where the base yarn is knitted on the front side of the fabric. The method additionally includes steps of inserting a pattern yarn before a start of a pattern unit, which is produced using the pattern yarn, knitting the pattern yarn on the front side of the fabric in the pattern unit and cutting off the pattern yarn after the pattern unit.
Vertically lapped nonwoven in footwear
Footwear with vertically lapped nonwoven layers in upper and sole structures for enhanced breathability and moisture wicking is disclosed. Exemplary vertically lapped nonwoven dual layers comprise one or more hydrophobic layers and one or more hydrophilic layers that are adhered to each other by a plurality of methods and are further integrated into the inside of the upper and sole of the footwear so that the hydrophilic layer is in direct contact with the feet. The hydrophilic part of the dual layer wicks sweat or bodily fluid from the wearer into the nonwoven and transports the moisture to the hydrophobic layer for fast evaporation, thus keeping the feet dry. The nonwoven footwear is environmentally friendly as the nonwoven layers can be made of recycled materials and may be fully recyclable.
FIBER PRODUCT AND METAL FIBER
A metal fiber included in a fiber product includes a tungsten wire having a diameter less than or equal to 22 μm. The tungsten wire may have, for example, a diameter less than or equal to 18 μm. The tungsten wire may have, for example, a diameter within a range from 20% less than 13 μm to 20% greater than 13 μm. In addition, the tungsten wire may have, for example, a diameter greater than or equal to 5 μm. Further, the tungsten wire may include, for example, pure tungsten. Moreover, the metal fiber may be, for example, a metal thread including a false-twisted yarn which is made of a chemical fiber and is wound.
KNITTED COMPONENT FOR AN ARTICLE OF FOOTWEAR
A knitted component may include a first portion, where the first portion at least partially forms an underfoot area of an article of footwear. A second portion may be included, where the second portion at least partially forms an outer surface of a medial or a lateral side of an article of footwear. A forward portion may extend from an end of the first portion and may include a toebox area in a toe region of the knitted component. A knitted connection structure may be located between the toebox area of the forward portion and the second portion, where the second portion includes a first course, where the toebox area of the second portion includes a second course, and where the first course is secured to the second course through the knitted connection structure.
MOISTURE-RESPONSE DEFORMING FABRIC
A moisture-response deforming fabric includes 40 parts by weight to 70 parts by weight of an ordinary yarn and 30 parts by weight to 60 parts by weight of a moisture-response stretching nylon yarn. A water-vapour permeability index (imt) of the moisture-response deforming fabric is greater than or equal to 0.35 under a measurement of the validation FTTS-FP-161.