Cellulose fiber

Patent metadata

Field	Value
Publication number	US-10883196-B2
Application number	US-201415108713-A
Country	US
Kind code	B2
Filing date	Dec 22, 2014
Priority date	Jan 3, 2014
Publication date	Jan 5, 2021
Grant date	Jan 5, 2021

Abstract

The present invention relates to a fiber of the Lyocell type which has a titer of from 0.8 dtex to 3.3 dtex and is characterized by the following relationships:
Höller factor F2≥1, preferably ≥2 Höller factor F1≥−0.6 Höller factor F2≤6 and Höller factor F2 minus 4.5*Höller factor F1≥1, preferably ≥3.

The fiber according to the invention displays a specific combination of properties with regard to the Höller factors, the flexibility and the abrasion resistance within a planar assembly. Hence, the fiber shows a behavior more similar to viscose and can be processed in the textile chain according to viscose standard methods.

First claim

The invention claimed is:

1. A cellulosic fiber of the lyocell type which has a titre of from 0.8 dtex to 3.3 dtex and having the following relationships:
Höller factor F2≥1,
Höller factor F1≥−0.6
Höller factor F2≤6 and
Höller factor F2 minus 4.5*Höller factor F1≥1
wherein Höller factor F1 is −1.109+0.03992*FFk(maximum tensile force conditioned (cN/tex))−0.06502*FDk(maximum tensile force elongation conditioned (%))+0.04634*FFn(maximum tensile force wet (cN/tex))−0.04048*FDn(maximum tensile force elongation wet (%))+0.08936*NM(wet modulus (cN/tex, 5%))+0.02748*SFk(loop strength conditioned (cN/tex))+0.02559*KFk(knot strength conditioned cN/tex); and
wherein Höller factor F2 is −7.070+0.02771*FFk+0.04335*FDk+0.02541*FFn+0.03885*FDn−0.01542*NM+0.2891*SFk+0.1640*KFk.

2. The fiber according to claim 1 , wherein a single jersey 150 g/m2 produced from a ring yarn Nm 50/1 of said fiber exhibits an abrasion resistance according to Martindale of between 30 000 and 60 000 tours up to the point of hole formation.

3. The fiber according to claim 1 , wherein said fiber is produced from a mixture of at least two different pulps.

4. A fiber bundle comprising a plurality of fibers according to claim 1 .

5. The fiber according to claim 1 , wherein a single jersey 150 g/m2 produced from a ring yarn Nm 50/1 of said fiber exhibits an abrasion resistance according to Martindale of between 30 000 and 60 000 tours up to the point of hole formation.

6. The fiber according to claim 1 , wherein said fiber is produced from a mixture of at least two different pulps.

7. A fiber bundle comprising a plurality of fibers according to claim 1 .

8. The fiber according to claim 1 , having a Höller factor F2≥2.

9. The fiber according to claim 1 , wherein the Höller factor F2 minus 4.5*Höller factor F1≥3.

Assignees

• Chemiefaser Lenzing Ag

Inventors

• Schrempf Christoph
• Schuster Kurt Christian
• RÜF Hartmut
• Firgo Heinrich
• Hainbucher Karl Michael

Classifications

• D01F2/00 Primary

  Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof · CPC title

• D10B2201/00

  Cellulose-based fibres, e.g. vegetable fibres · CPC title