公开(公告)号：US12163263B2

公开(公告)日：2024-12-10

申请号：US17787070

申请日：2020-12-11

Applicant: Lenzing Aktiengesellschaft

Inventor： Ibrahim Sagerer-Foric

IPC: D04H3/11 ,  B29C48/00 ,  B29C48/05 ,  B29C48/92 ,  D04H3/013

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. To establish a process which permits a cost-efficient and simple adjustment of the air permeability of the spunbonded nonwoven, it is suggested that the air permeability of the spunbonded nonwoven is adjusted on the basis of at least one parameter of the coagulation air stream in that the actual air permeability of the spunbonded nonwoven is measured, the difference between the actual air permeability and a predefined target air permeability is determined and the at least one parameter of the coagulation air stream is changed as a function of the determined difference.

公开(公告)号：US12116729B2

公开(公告)日：2024-10-15

申请号：US17596098

申请日：2020-05-29

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Richard Herchl ,  Gabriele Schild ,  Christian Weilach

IPC: D21H11/10 ,  D21C1/08 ,  D21C3/06 ,  D21C3/20 ,  D21C5/00 ,  D21C9/10 ,  D21H11/06 ,  D21H11/08 ,  D21H11/14

CPC classification number: D21H11/10 ,  D21C1/08 ,  D21C3/06 ,  D21C3/20 ,  D21C5/005 ,  D21C9/10 ,  D21H11/06 ,  D21H11/08 ,  D21H11/14

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.

公开(公告)号：US20240240399A1

公开(公告)日：2024-07-18

申请号：US18622076

申请日：2024-03-29

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Richard Herchl ,  Christoph Klaus-Nietrost ,  Christian Weilach

IPC: D21C5/00 ,  B29B17/02 ,  D01G11/04 ,  D21C5/02 ,  D21H11/14

CPC classification number: D21C5/00 ,  B29B17/02 ,  D01G11/04 ,  D21C5/022 ,  D21H11/14 ,  D10B2201/02 ,  D10B2331/04

Abstract: A recycled cellulose raw material and a method for recycling a cellulose raw material from blended textile waste with high reliability and yielding high raw material quality is shown, the method comprising the steps in the given order: providing the blended textile waste containing at least one cellulose component and at least one synthetic polymer component, treating the blended textile waste in a non-oxidizing aqueous treatment medium in order to degrade the at least one synthetic polymer component, whereby the treatment is carried out at a temperature between 100° C. and 200° C., and obtaining the recycled cellulose raw material from the treated blended textile waste.

公开(公告)号：US20240068140A1

公开(公告)日：2024-02-29

申请号：US18387303

申请日：2023-11-06

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Katharina Gregorich ,  Mirko Einzmann

IPC: D04H1/4258 ,  A45D44/00 ,  D01D5/14 ,  D01D5/20 ,  D01F2/06 ,  D04H3/013

CPC classification number: D04H1/4258 ,  A45D44/002 ,  D01D5/14 ,  D01D5/20 ,  D01F2/06 ,  D04H3/013 ,  A45D2200/1027 ,  D10B2501/04 ,  D10B2503/00 ,  D10B2509/026

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 μm for at least 90% of their lengthwise extension.

公开(公告)号：US11873580B2

公开(公告)日：2024-01-16

申请号：US17417957

申请日：2019-12-20

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Johann Pillichshammer ,  Christoph Schrempf ,  Andreas Gressenbauer ,  Ernst Reiter ,  Martin Neunteufel

IPC: D01D10/06 ,  D01D5/06 ,  D01F2/02

CPC classification number: D01D10/06 ,  D01D5/06 ,  D01F2/02

Abstract: The present invention provides a process for the viable removal of liquid from lyocell cellulose continuous filament yarns at very high production speeds.

公开(公告)号：US20230304988A1

公开(公告)日：2023-09-28

申请号：US17781468

申请日：2020-12-01

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Erich Kurzböck ,  Christoph Ramsauer ,  Christa Unterberger ,  Dominik Ostaszewski ,  Christoph Schrempf

IPC: G01N33/36 ,  D06H3/00 ,  D03D15/225 ,  D03D15/54

CPC classification number: G01N33/365 ,  D06H3/00 ,  D03D15/225 ,  D03D15/54

Abstract: The present invention relates to a method and apparatus for whiteness measurement and/or staining control of filaments.

公开(公告)号：US11519104B2

公开(公告)日：2022-12-06

申请号：US16962504

申请日：2019-01-14

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Christoph Klaus-Nietrost ,  Richard Herchl ,  Christian Weilach

IPC: B02C18/00 ,  B03D1/02 ,  B29B17/02 ,  B29B17/04 ,  D06L4/00 ,  D01F13/02 ,  C08B16/00 ,  C08J11/08 ,  D01F2/06 ,  D01D5/06 ,  D01F2/02 ,  B29K105/26

Abstract: Method of recycling a textile material which comprises cellulose for manufacturing regenerated cellulosic molded bodies, wherein in the method the textile material is comminuted, at least a part of non-fiber-constituents of the comminuted textile material is separated from fiber-constituents of the comminuted textile material, at least a part of non-cellulosic fibers of the fiber-constituents is mechanically separated from cellulosic fibers of the fiber-constituents, at least a further part of the non-cellulosic fibers is chemically separated from the cellulosic fibers, and the molded bodies are generated based on the cellulosic fibers after mechanically separating and chemically separating.

公开(公告)号：US20220235519A1

公开(公告)日：2022-07-28

申请号：US17596094

申请日：2020-05-29

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Richard HERCHL ,  Christian WEILACH

IPC: D21H13/20 ,  D21C5/00

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.

公开(公告)号：US11326283B2

公开(公告)日：2022-05-10

申请号：US16500771

申请日：2018-03-28

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Tom Carlyle ,  Mirko Einzmann ,  Gisela Goldhalm ,  Malcolm John Hayhurst ,  Katharina Mayer ,  Ibrahim Sagerer-Foric

IPC: D04H3/013 ,  D04H3/16

Abstract: A nonwoven cellulose fiber fabric, in particular directly manufactured from lyocell spinning solution, wherein the fabric comprises a network of substantially endless fibers, and wherein the fibers are homogeneously merged substantially over the entire fabric.

公开(公告)号：US11321658B2

公开(公告)日：2022-05-03

申请号：US16962503

申请日：2019-01-14

Applicant: LENZING AKTIENGESELLSCHAFT

Inventor： Christoph Klaus-Nietrost ,  Richard Herchl ,  Christian Weilach

IPC: G06Q10/06 ,  G06F16/22 ,  D01F2/00 ,  D01F2/06 ,  G01N33/36 ,  G06Q10/08 ,  G06Q10/00 ,  G06Q50/04

Abstract: Method of identifying a product which comprises cellulose, wherein in the method a data set is determined which is indicative for multiple constituents of the product or a preform of the product, and the data set which is correlated with the product or the preform is stored in a database.