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

Filling Fiber With Improved Opening Performance, Method For Its Production And Its Use

Inactive Publication Date: 2010-11-11
FITZPATRICK CELLA HARPER & SCINTO
View PDF9 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0013]This object has been accomplished by a cellulosic filling fiber having an individual fiber titer of from 0.7 to 6.0 dtex, preferably of from 0.8 to 3.0 dtex, which has a crimp, produced in a stuffing box, with a count of at least 18 cr

Problems solved by technology

Nor does WO 99 / 16705 go into the opening performance of the fibers and problems resulting therefrom.
For logistical and economic reasons, lower pressures cannot be used.
However, down and feather processors generally do not have available the additional opening equipment otherwise customary in textile production.
Now, if the known lyocell fibers according to the method mentioned above are used as mixture participants, the heavy pressing in balling results in incomplete opening of the fibers.
At the same time, formation of large undesirable clumps of fibers may reach the following processing machinery and destroy its sensitive parts.
A homogeneous mixture with downs and feathers with these fibers is not possible.

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
  • Filling Fiber With Improved Opening Performance, Method For Its Production And Its Use
  • Filling Fiber With Improved Opening Performance, Method For Its Production And Its Use
  • Filling Fiber With Improved Opening Performance, Method For Its Production And Its Use

Examples

Experimental program
Comparison scheme
Effect test

example 1

Comparison

[0053]Lyocell fibers having an individual fiber titer of 1.7 dtex were formed according to the known method by extrusion of a solution of cellulose in aqueous amine oxide, coagulated in a dry-wet spinning process and cut, washed, dried and finished in a fleece after-treatment according to the prior art so that they had a finishing layer of between 0.8 and 1.2 wt. %. A single value cannot be indicated for these parameters, since even with careful application of the finishing agent, the layer in the fiber fleece fluctuates within certain limits. The fibers were pressed into balls in a commercial Autefa ball press on a production scale. Samples were then taken according to the method described above.

examples 2 and 3

According to the Invention

[0054]Lyocell fibers having an individual fiber titer of 1.7 dtex were formed according to a known method by extrusion of a solution of cellulose in aqueous amine oxide, coagulated in a dry-wet spinning process and washed, dried in a cable after treatment, crimped in a stuffing box crimping operation and finished with an amino-functionalized silicone oil, type Wacker Finish CT96E, so that they had a finishing layer of between 0.7 and 0.9 wt. %. Only then was the cable cut. The fibers were pressed into bales in a commercial Autefa baling press on a production scale. Samples were then taken according to the method described above.

[0055]The fibers produced according to the method according to the invention exhibit a substantially better opening performance than do those of the prior art.

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

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Lengthaaaaaaaaaa
Massaaaaaaaaaa
Login to View More

Abstract

The present invention relates to a process for producing a cellulosic fiber, in particular a lyocell fiber which has improved opening characteristics and therefore is particularly useful for blending with feathers, in particular with down, to such a fiber fill fiber and to the use of this fiberfill fiber in mixtures for bedding and clothing.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a method for the production of a cellulosic fiber, in particular a lyocell fiber, which, because of its improved opening performance, is especially well-suited for mixture with feathers, in particular with downs, such a filling fiber and the use of this filling fiber in mixtures, as well as bedding and clothing which are filled with these mixtures.BACKGROUND OF THE INVENTION[0002]Known and widely used as filling fibers in mixture with downs and feathers are short cut fibers of melt-extruded synthetic polymers such as polyester, polylactic acid and others.[0003]Cellulosic fibers, in particular the solvent-spun fibers designated by the generic name lyocell by the BISFA (International Bureau for the Standardization of Man Made Fibers), have long been known and have for years been produced on a commercial scale. In the production of lyocell fibers, a tertiary amine oxide, in particular N-methylmorpholine-N-oxide (NMMO), is use...

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
IPC IPC(8): D02G1/12D01F2/00D06M15/643
CPCB68G1/00D02G1/12Y10T428/2924Y10T428/2907D06M15/6436D01D1/02D01D5/04D01D5/06D01D5/26D01D10/02D01F2/00D10B2501/00D10B2503/06
Inventor MANNER, JOHANNJARY, SUSANNEIVANOFF, DENITZADOBSON, PETERHAGER, MARKUSFIRGO, HEINRICH
Owner FITZPATRICK CELLA HARPER & SCINTO