Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Bi-component fiber for the production of spunbonded fabric

a technology of fibers and fibers, applied in the field of bicomponent fibers, can solve the problems of additives that can affect the production process, additives can be associated with high costs, additives can be health or environmental hazards, etc., and achieve the effects of improving the softness and/or surface feel of the spunbond fabric, improving the spinning stability and expandability of the fibers, and improving the solidification of the material

Inactive Publication Date: 2015-01-15
EWALD DORKEN
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about bi-component fibers that have similar melting points, which can improve the synergistic effects between the two components in fiber production. This results in improved mechanical properties, such as increased tearing force and nail tear resistance, in spunbond fabrics made from these fibers. The invention also allows for a higher proportion of recycled materials in the production of the bi-component fibers, which is advantageous for the environment. The difference between the melting points of the two components is important, with a difference of 6°C or less being ideal. The weight of the lower melting point component should ideally make up at most 50% of the bi-component fiber, while the difference between the melt-flow indices of the two components should ideally be less than or equal to 25 g / 10 minutes. These guidelines help achieve the desired properties in the spunbond fabric.

Problems solved by technology

A disadvantage of using these additives, however, is that the additives can disrupt the production process, in particular when they exceed certain overall concentration limits.
In addition, the additives can be associated with high costs.
In addition, additives can be a health or environmental risk, in particular when they exceed overall concentrations in the fibers.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0093]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 “...

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
melting pointsaaaaaaaaaa
melting pointsaaaaaaaaaa
melting pointsaaaaaaaaaa
Login to View More

Abstract

A bi-component fiber (1), in particular for the production of spunbond fabrics (4), with 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. The first component (2) has an additive, and the second component (3) has a percentage by weight of the additive that is smaller than that in the first component (2).

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 is formed of a first polymer and a second component that is formed 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 co...

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(United States)
IPC IPC(8): D01F8/04D04H3/16D01F8/18D04H3/007D01F8/06
CPCD01F8/18D01F8/04D04H3/007Y10T428/2929D04H3/16D10B2321/02D01F8/06D01F1/02D01F8/00D04H3/147Y10T442/637
Inventor SCHROER, JORNPLACKE, DANIEL
Owner EWALD DORKEN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com