Volume nonwoven fabric

Patent metadata

Field	Value
Publication number	US-10900156-B2
Application number	US-201515118099-A
Country	US
Kind code	B2
Filing date	Feb 17, 2015
Priority date	Feb 18, 2014
Publication date	Jan 26, 2021
Grant date	Jan 26, 2021

Abstract

A nonwoven fabric has a volume-giving material, in particular fiber balls, down and/or fine feathers, and has a maximum tensile strength, measured according to DIN EN 29 073 at a mass per unit area of 50 g/m2 in at least one direction, of at least 0.3 N/5 cm, in particular of 0.3 N/5 cm to 100 N/5 cm.

First claim

The invention claimed is:

1. A nonwoven fabric, comprising:
a volume-giving material which comprises fiber balls opened by means of spiked rolls or spiked belts, wherein the nonwoven fabric is homogeneous and the volume-giving material is uniformly distributed therein, the volume-giving material comprises mutually interlocking fiber balls, the nonwoven fabric is not needled, and
the nonwoven fabric has a maximum tensile strength, measured according to DIN EN 29 073, at a mass per unit area of 50 g/m 2 , in at least one direction of at least 0.3 N/5 cm.

2. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls comprising polyester fibers.

3. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls comprising wool.

4. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls comprising binder fibers having a length of 0.5 mm to 100 mm.

5. The fabric of claim 4 , wherein the binder fibers are configured as core/shell fibers,
wherein the shell comprises polybutylene terephthalate (PBT), polyamide (PA), a copolyamide, a copolyester, or two or more of any of these,
and/or
wherein the core comprises polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyolefin (PO), polyphenylene sulfide (PPS), aromatic polyamide (PA), and/or polyether sulfone (PES).

6. The fabric of claim 4 , wherein the binder fibers in the nonwoven fabric are present in a range of 5 to 50 wt. % relative to a total weight of the nonwoven fabric.

7. The fabric of claim 4 , further comprising:
a phase change material.

8. The fabric of claim 1 , wherein the maximum tensile strength, measured according to DIN EN 29 073, at a mass per unit area of 50 g/m 2 , in at least one direction of 0.3 N/5 cm to 100 N/5 cm.

9. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls in an amount of at least 20 wt. %, relative to a total weight of the nonwoven fabric.

10. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls in an amount of at least 25 wt. %, relative to a total weight of the nonwoven fabric.

11. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls in an amount of 30 to 90 wt. %, relative to a total weight of the nonwoven fabric.

12. The fabric of claim 1 , wherein the volume-giving material further comprises down and/or fine feathers in an amount of 20 to 70 wt. %, relative to a total weight of the nonwoven fabric.

13. The fabric of claim 1 , wherein the volume-giving material comprises fiber balls comprising polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, or two or more of any of these.

14. The fabric of claim 4 , wherein the binder fibers in the nonwoven fabric are present in a range of 7 to 40 wt. %, relative to a total weight of the nonwoven fabric.

15. The fabric of claim 4 , wherein the binder fibers in the nonwoven fabric are present in a range of 10 to 35 wt. %, relative to a total weight of the nonwoven fabric.

16. The fabric of claim 9 , wherein the volume-giving material further comprises down and/or fine feathers in an amount of 20 to 70 wt. %, relative to a total weight of the nonwoven fabric.

17. The fabric of claim 1 , wherein the fiber balls are opened in random directions.

Assignees

• Freudenberg Carl Kg

Inventors

• Grynaeus Peter
• Scharfenberger Gunter
• Sattler Thomas

Classifications

• D04H1/70

  characterised by the method of forming fleeces or layers, e.g. reorientation of fibres · CPC title

• D04H1/54 Primary

  by welding together the fibres, e.g. by partially melting or dissolving (in combination with needling D04H1/485) · CPC title

• D04H1/4382

  Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather · CPC title

• D04H1/43835

  Mixed fibres, e.g. at least two chemically different fibres or fibre blends · CPC title

• D04H1/43828 Primary

  sheath-core · CPC title