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Bi-component fiber for the production of spunbond fabric

a technology of bi-component fibers and spunbond fabric, which is applied in the direction of weaving, yarn, conjugated synthetic polymer artificial filaments, etc., can solve the problems of limited use of these synergistic effects, limited recyclability of bi-component fibers in their production, and it is technically impossible or uneconomical to separate the components of bi-component fibers. , to achieve the effect of improving the softness and/or surface feel of spunbond fabric, improving the stability

Inactive Publication Date: 2015-01-15
EWALD DORKEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention relates to bi-component fibers that have similar melting points and can improve the synergistic effects between their properties. This results in better mechanical properties, such as increased tearing force and nail tear resistance, in spunbond fabrics made from these fibers. The use of recycled materials in the production of the bi-component fibers also has a positive effect on the properties of the fabrics. The bi-component fibers have a sheath-sheath configuration, which improves solidification, spinning stability, and drapability of the fibers. The difference between the melt-flow indices of the two components should be less than or equal to 25 g / 10 minutes to achieve the desired properties. Overall, the invention provides improved performance and softness of spunbond fabrics.

Problems solved by technology

In practice, however, the use of these synergistic effects is limited to the extent that the properties of the components cannot routinely be combined in the described, only advantageous way.
Another problem that arises in the case of bi-component fibers is the limited recyclability of the bi-component fibers in their production.
In this case, however, it is technically impossible or uneconomical to separate the components of the bi-component fibers.
The associated change in the properties of the bi-component fiber is in general undesirable and can be tolerated only up to a certain degree.

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
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  • Bi-component fiber for the production of spunbond fabric
  • Bi-component fiber for the production of spunbond fabric
  • Bi-component fiber for the production of spunbond fabric

Examples

Experimental program
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Embodiment Construction

[0096]FIGS. 1 to 16 show cross-sectional views of bi-component fibers 1 according to the invention by way of example. The depicted bi-component fibers 1, in each case, have a first component 2 and a second component 3. In the core-sheath fibers depicted in FIGS. 1 and 4, in this case, the first component 2 surrounds the second component 3 and thus forms the outer surface of the fiber. In this case, the bi-component fibers 1 depicted in FIGS. 1 to 3 have an at least approximately circular or round geometry in cross-section. The bi-component fiber depicted in FIG. 4 shows, however, a trilobal cross-section. Such trilobal cross-sections, like other multilobal cross-sections as well, have the effect that the fiber has a larger outer surface in relation to its mass than is the case with fibers with a circular cross section. In the case of “core-sheath fibers,” in which the proportion of the components forming the sheath is very small, for example approximately 2%, but certainly even in “...

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Abstract

A bi-component fiber (1), in particular for the production of spunbond fabrics (4), has a first component (2) and a second component (3), whereby the first component (2) has a first polymer as an integral part and the second component has a second polymer as an integral part. It is provided that the difference between the melting points of the first component (2) and the second component (3) is less than or equal to 8° C.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a bi-component fiber, in particular for the production of spunbond fabric, with a first component and a second component, whereby as integral parts, the first component has a first polymer and the second component has a second polymer. In addition, the invention relates to a spunbond fabric with at least one bi-component fiber of the above-mentioned type.[0003]2. Description of Related Art[0004]Bi-component fibers of the type in question usually have a first component that consists of a first polymer and a second component that consists of a second polymer. In this case, different types of bi-component fibers can be distinguished, which in each case have different characteristic distributions of the components in the fiber cross-section. Bi-component fibers, in which the first component surrounds and thus encompasses the second component in the cross-section of the fiber, are referred to as core...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): D01F8/16D01F8/06D04H1/492D01F8/04D04H1/4382
CPCD01F8/06D01F8/04Y10T428/2929D04H1/492D04H1/4382D01F8/16Y10T442/637D04H1/43828D04H1/43832D04H1/4383
Inventor SCHROER, JORNPLACKE, DANIEL
Owner EWALD DORKEN
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