Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing spun-bonded nonwoven fabric

A non-woven fabric and spun-bonded technology, which is applied in wet spinning, stretch spinning, textiles and papermaking, etc., can solve the problems that it is impossible to increase the throughput, and achieve the effect of reliable conveying speed and high flexibility

Active Publication Date: 2022-07-22
LENZING AG
View PDF20 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is not possible to increase throughput without severe loss of quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing spun-bonded nonwoven fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] figure 1 A schematic illustration of a method 100 according to a first embodiment variant for producing a cellulosic spunbond nonwoven fabric 1 and a corresponding device 200 are shown, by means of which the method 100 is carried out. In a first method step, a spinning mass 2 is produced here from the cellulosic raw material and fed to the spinning nozzle 3 of the device 200 . The cellulosic raw material for producing the spinning mass 2 (not shown in detail in the figures) can here be conventional cellulose consisting of wood or other vegetable raw materials. However, it is also conceivable that the cellulosic raw material consists of production waste from the production of spunbond nonwovens or recycled textiles. The spinning mass 2 is here a solution composed of cellulose and water in NMMO (methylmorpholine oxide), wherein the cellulose content in the spinning mass 2 is 3 wt % and 17 wt %. weight percent.

[0056] The spinning mass 2 is then extruded into filament...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for producing a spunbonded nonwoven fabric (1), in which a spinning material (2) is extruded into filaments (5, 50) through nozzle holes (4) of at least one spinning nozzle (3, 30), the filaments (5, 50) are stretched in the extrusion direction and laid on a first conveying device (9) for forming the spunbonded nonwoven fabric (1), and wherein the spunbond nonwoven fabric (1) is subjected to at least one washing (10). In order to increase the throughput of the method without mass loss, it is proposed that the spunbonded nonwoven fabric (1) is subjected to the washing (10) at least partially on a perforated second conveying device (13) having a lower conveying speed than the first conveying device (9), wherein a washing liquid is sprayed to the spunbonded nonwoven fabric (1) during the washing (10) and the washing liquid is discharged at least partially through the perforated second feed device (13).

Description

technical field [0001] The present invention relates to a method for producing a spunbond nonwoven, in which a spinning mass is extruded into filaments through the nozzle holes of at least one spinning nozzle, the filaments are drawn in the extrusion direction and laid down is placed on a first conveyor for forming a spunbond nonwoven, and wherein the spunbond nonwoven is subjected to at least one wash. Background technique [0002] It is known from the prior art to produce spunbond or nonwoven fabrics according to the spunbond method on the one hand and the meltblown method on the other hand. In spunbond processes (eg GB 2 114 052 A or EP 3 088 585 Al), the filaments are extruded through a nozzle and drawn off and drawn through a drawing unit located below the nozzle. In contrast, in meltblowing processes (eg, US 5,080,569 A, US 4,380,570 A, or US 5,695,377 A), the extruded filaments are already entrained and drawn by hot, fast process air as they exit the nozzle. In both...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D04H3/013D01D5/06D01D5/14D04H3/02
CPCD04H3/013D04H3/02D04H3/03D04H3/11D04H3/16
Inventor I·赛格勒-佛里克
Owner LENZING AG
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com