Biocomponent fibers with an exterior component comprising polypropylene

Inactive Publication Date: 2011-08-04
TOTAL RES & TECH FELUY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0009]It is also an object of the present invention to provide bic

Problems solved by technology

Frequently, it is not possible to produce fibers or nonwovens having all the desired properties with a single polypropylene and one has to revert to technically more demanding solutions, such as for example bicomponent fi

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0085]Bicomponent nonwoven with PP1 as exterior component and PP2 as interior component wherein the exterior layer comprised 30 wt % of the total weight of the fibers

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Abstract

The present invention relates to bicomponent fibers with improved bonding properties. In particular, the present invention relates to bicomponent fibers comprising an exterior component, which in turn comprises a polypropylene that has been degraded from a first melt flow index MFI1 (measured according to ISO 1133, condition L, 230° C., 2.16 kg) to a second melt flow index MFI2 (measured according to ISO 1133, condition L, 230° C., 2.16 kg), such that the degradation ratio MFI1/MFI2 is within a well-defined range and such that the second melt flow index MFI2 is in the range from 50 dg/min to 300 dg/min. Further, the present invention relates to nonwovens, composites and laminates comprising said bicomponent fibers. The present invention also relates to a process for making such bicomponent fibers, nonwovens, composites and laminates.

Description

FIELD OF THE INVENTION[0001]The present invention relates to bicomponent fibers with improved bonding properties. In particular, the present invention relates to bicomponent fibers comprising an exterior component, which in turn comprises a polypropylene that has been degraded from a first melt flow index MFI1 (measured according to ISO 1133, condition L, 230° C., 2.16 kg) to a second melt flow index MFI2 (measured according to ISO 1133, condition L, 230° C., 2.16 kg), such that the degradation ratio MFI1 / MFI2 is within a well-defined range and such that the second melt flow index MFI2 is in the range from 50 dg / min to 300 dg / min. Further, the present invention relates to nonwovens, composites and laminates comprising said bicomponent fibers. The present invention also relates to a process for making such bicomponent fibers, nonwovens, composites and laminates.THE TECHNICAL PROBLEM AND THE PRIOR ART[0002]Polypropylene is one of the most widely used synthetic polymers for fibers and ...

Claims

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Application Information

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IPC IPC(8): D04H13/00D02G3/00
CPCD01D5/30D01F8/06D04H1/54D04H1/541Y10T428/2929D04H3/007D04H3/16D04H13/00D04H1/544Y10T442/641D04H1/5412
Inventor HAUBRUGE, HUGUESPAVY, GUILLAUME
Owner TOTAL RES & TECH FELUY
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