VOLUME NONWOVEN FABRIC

• US 20160355958A1
• Filed: 02/17/2015
• Published: 12/08/2016
• Est. Priority Date: 02/18/2014
• Status: Active Grant

• Current Assignee: Carl Freudenberg KG (Freudenberg & Company KG)
• Original Assignee: Carl Freudenberg KG (Freudenberg & Company KG)
• Inventors: Sattler, Thomas, Grynaeus, Peter, Scharfenberger, Gunter
• Granted Patent: US 10,900,156 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A47G 9/02 Bed linen; Blankets; Counterpanes
• CPC Class Codes: D04H 1/00 Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
• CPC Class Codes: D04H 1/005 Making three-dimensional articles by consolidation D04H1/22 takes precedence
• CPC Class Codes: D04H 1/02 Cotton wool; Wadding
• CPC Class Codes: D04H 1/4266 Natural fibres not provided for in group D04H1/425
• CPC Class Codes: D04H 1/435 Polyesters
• CPC Class Codes: D04H 1/43828 sheath-core
• CPC Class Codes: D04H 1/43835 Mixed fibres, e.g. at least two chemically different fibres or fibre blends
• CPC Class Codes: D04H 1/54 by welding together the fibres, e.g. by partially melting or dissolving in combination with needling D04H1/485
• CPC Class Codes: D04H 1/70 characterised by the method of forming fleeces or layers, e.g. reorientation of fibres

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.

Claims

1. A nonwoven fabric, comprising:

a volume giving,

wherein the nonwoven fabric 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.

2. The fabric of claim 1, wherein the volume-giving material comprises fiber balls in an amount of at least 20 wt. %,

and/or

down and/or fine feathers is 20 to 70%,

each time relative to a total weight of the nonwoven fabric.

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

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

5. 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.

6. The fabric of claim 5, wherein the binder fibers are configured as core/shell fibers,

wherein the shell comprises PBT, PA, a copolyamide, a copolyester, or two or more of any of these,

and/or

wherein the core comprises PET, PEN, PO, PPS, aromatic PA, and/or PES.

7. The fabric of claim 5, 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.

8. The fabric of claim 5, further comprising:

a phase change material.

9. A method of producing a textile material, including a blanket, garment, upholstered furniture, bedspread, mattress, filter, suction mat, spacer, foam replacement, wound dressing, and/or fire protection material, the method comprising:

incorporating the nonwoven fabric of claim 1 into the textile material.

10. A method for producing the nonwoven fabric of claim 1, the method comprising:

opening a nonwoven fabric raw material comprising a volume-giving material using one or more spiked rolls and/or spiked belts, to obtain an opened material;

distributing the opened material in a nonwoven shaping unit, to obtain a distributed material; and

then

placing the distributed material on a laying belt, to obtain a placed material; and

consolidating the placed material.

11. The fabric of claim 1, wherein the volume-giving material comprises fiber balls, down, and/or fine feathers.

12. 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/m², in at least one direction of 0.3 N/5 cm to 100 N/5 cm.

13. 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.

14. 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.

15. 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.

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

17. 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.

18. The fabric of claim 5, 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.

19. The fabric of claim 5, 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.