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Bi-component staple or short-cut trilobal fibres and their uses

a trilobal fibre and staple technology, applied in the direction of staple fibre formation, filament/thread forming, bandages, etc., can solve the problems of high percentage limitation of shaped fibre use, extra cost outweighs any benefits, specific properties, etc., to achieve superior softness and improve thermal bonding properties

Inactive Publication Date: 2019-04-25
BEAULIEU INT GRP NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a special type of fiber that has a three-lobed shape and can be crimped. This fiber can be used to make non-woven fabrics, which have the advantage of being soft and having good thermal-bonding properties. The technical effect of this invention is to provide a unique fiber that can improve the quality and softness of non-woven fabrics.

Problems solved by technology

However, shaped bi-component fibres are considered to increase costs so that the extra costs can outweigh any benefits.
However, the need of using high percentages of a standard round bi-component fibres (normally higher than a 50 wt %) to be used as binder agent to assure a suitable mechanical consistency of nonwovens (for instance made by means of air-through bonding technology) represents a limit to the use of shaped fibres in high percentage when necessary to reach some specific properties.

Method used

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  • Bi-component staple or short-cut trilobal fibres and their uses
  • Bi-component staple or short-cut trilobal fibres and their uses
  • Bi-component staple or short-cut trilobal fibres and their uses

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Embodiment Construction

Definitions

[0041]A “trilobal shaped fibre” has a trilobal cross-sectional geometry including three lobes defined by three tips and made of a sheath material, and a generally solid central core section running axially through the fibre. Any of the trilobal shaped fibers used in any of the embodiments of the present invention may be staple or short-cut fibers, e.g. alone, in combinations or in blends. A trilobal fibre has a lobed cross-sectional geometry including a sheath having three lobes and hence defined by three tips, and also a generally solid central core section running axially through the fibre having a similar shape to the sheath. Each outer side of the fibre (at least before thermal bonding) preferably defines a smoothly curved contour extending between each tip and a neighbouring tip, each side preferably including a concave region located at an approximate midpoint between neighbouring tips. However triangular and even convex curves can be useful for certain applications...

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Abstract

A bi-component staple or short-cut fibre includes a core and a sheath, the sheath and the core have different melting points, with the sheath melting point being lower than the core melting point, the bi-component fibre having an outer trilobal shaped cross-section. The core of the bi-component fibre can have a cross-section whereby the outer trilobal shaped cross-section is created by a conformal layer of sheath material applied to the core.The fibres can be used, in dry or wet wipes, absorbent articles, hygiene products, filters, carpets, rugs or mats, etc.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This patent application is a U.S. National Phase Patent Application of PCT Application No.: PCT / EP2017 / 060246, filed Apr. 28, 2017, which claims priority to European Patent Application No.: 16167771.1, filed Apr. 29, 2016 and European Patent Application No.: 16195024.1, filed Oct. 21, 2016, each of which is incorporated by reference herein in its entirety.FIELD OF THE INVENTION[0002]The present invention relates generally to shaped bi-component fibres and their manufacture, textiles made with these bi-component fibres and their manufacture, more particularly, to nonwovens made with these bi-component fibres and their manufacture and products made with the nonwovens and their manufacture. The present invention also relates in one aspect to the improved bonding properties of a bi-component fibre with a trilobal shape, suitable for the preparation of staple and short-cut fibres and nonwoven fabrics having superior softness.BACKGROUND OF THE ...

Claims

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Application Information

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IPC IPC(8): D01D5/26D01F8/06D01F8/14D01D5/253D04H1/541
CPCD01D5/26D01F8/06D01F8/14D01D5/253D04H1/541A61F13/51121D04H1/54D01D5/34D04H1/5412
Inventor PINOCA, LEONARDOBIAGIOTTI, JERICOBEUN, GILLIS
Owner BEAULIEU INT GRP NV
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