# US 2010/0167018 A1 · Lyocell Web Product

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- Number: US 2010/0167018 A1
- Document ID: US20100167018A1
- Status: Published application
- Kind: A1
- Application number: 12/347,592
- Filed: 2008-12-31
- Published: 2010-07-01
- Earliest claimed: 2008-12-31
- Assignees: Weyerhaeuser Company
- Inventors: MENGKUI LUO; DAVID George UNRAU
- Web page: https://patentgrep.com/patent/US20100167018A1

## CPC

- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- B32B 3/30: characterised by a layer formed with recesses or projections, e.g. {hollows, grooves, protuberances, ribs (apertured layer B32B3/266; layer with cavities or internal voids B32B3/26)}
- B32B 5/022: {Non-woven fabric}
- B32B 5/024: {Woven fabric}
- B32B 5/026: {Knitted fabric}
- B32B 5/06: characterised by a fibrous {or filamentary} layer {mechanically connected, e.g. by needling} to another layer, e.g. of fibres, of paper
- B32B 5/08: the fibres or filaments of a layer being of different substances {, e.g. conjugate fibres, mixture of different fibres}
- B32B 7/12: using interposed adhesives or interposed materials with bonding properties
- B32B 9/02: comprising animal or vegetable substances {, e.g. cork, bamboo, starch}
- B32B 2262/0253: Polyolefin fibres
- B32B 2262/0276: Polyester fibres
- B32B 2262/062: Cellulose fibres, e.g. cotton
- B32B 2262/14: Mixture of at least two fibres made of different materials
- B32B 2307/54: Yield strength; Tensile strength
- B32B 2307/702: Amorphous
- B32B 2307/718: Weight, e.g. weight per square meter
- B32B 2555/02: Diapers or napkins
- Y10T 428/24612: Composite web or sheet
- Y10T 428/24636: Embodying mechanically interengaged strand[s], strand-portion[s] or strand-like strip[s] [e.g., weave, knit, etc.]
- Y10T 428/253: Cellulosic [e.g., wood, paper, cork, rayon, etc.]
- Y10T 428/27: Web or sheet containing structurally defined element or component, the element or component having a specified weight per unit area [e.g., gms/sq cm, lbs/sq ft, etc.]
- Y10T 428/31971: Of carbohydrate
- Y10T 428/31986: Regenerated or modified
- Y10T 442/30: Woven fabric [i.e., woven strand or strip material]
- Y10T 442/3472: Woven fabric including an additional woven fabric layer
- Y10T 442/40: Knit fabric [i.e., knit strand or strip material]
- Y10T 442/60: Nonwoven fabric [i.e., nonwoven strand or fiber material]
- Y10T 442/659: Including an additional nonwoven fabric
- Y10T 442/668: Separate nonwoven fabric layers comprise chemically different strand or fiber material
- Y10T 442/68: Melt-blown nonwoven fabric
- Y10T 442/681: Spun-bonded nonwoven fabric
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A web comprising a layer of crosslinked cellulosic fiber overlaid on and integral with at least one layer of regenerated cellulose fiber. The crosslinked cellulosic fiber can be sandwiched between two regenerated cellulose fiber layers. The regenerated cellulose can be viscose or lyocell.

## Claims

### Claim 1

A composite product comprising a web of intrafiber crosslinked cellulosic fiber overlaying and fastened to a web of regenerated cellulosic material.

### Claim 2 (depends on 1)

The composite product of claim 1 wherein the regenerated cellulosic material is lyocell.

### Claim 3 (depends on 1)

The composite product of claim 1 wherein the regenerated cellulosic material is viscose.

### Claim 4 (depends on 1)

The composite product of claim 1 wherein the regenerated cellulosic material is woven or knit.

### Claim 5 (depends on 1)

The composite product of claim 1 wherein the regenerated cellulosic material is nonwoven.

### Claim 6 (depends on 1)

The composite product of claim 1 wherein the regenerated cellulosic material has filament diameters in the range of 1 to 30 microns.

### Claim 7 (depends on 1)

The composite product of claim 1 wherein the product is embossed, thermobonded, needlepunched, spunlaced, adhesive bonded, pressed or a combination thereof.

### Claim 8 (depends on 1)

The composite product of claim 1 wherein the basis weight of each of the webs is from 5 to 300 g/m2.

### Claim 9 (depends on 9)

The composite product of claim 9 wherein the basis weights of two webs different.

### Claim 10 (depends on 9)

The composite product of claim 9 wherein the basis weights of two webs the same.

### Claim 11 (depends on 1)

The composite product of claim 1 further comprising a second web of regenerated cellulosic material overlaying and fastened to the web of crosslinked cellulosic fiber on the side opposite the first web of regenerated cellulosic material.

### Claim 12 (depends on 11)

The composite product of claim 11 wherein the regenerated cellulosic material is lyocell.

### Claim 13 (depends on 11)

The composite product of claim 11 wherein the regenerated cellulosic material is viscose.

### Claim 14 (depends on 11)

The composite product of claim 11 wherein the regenerated cellulosic material is woven or knits.

### Claim 15 (depends on 11)

The composite product of claim 11 wherein the regenerated cellulosic material is nonwoven.

### Claim 16 (depends on 11)

The composite product of claim 11 wherein the regenerated cellulosic material has filament diameters in the range of 1 to 30 microns.

### Claim 17 (depends on 11)

The composite product of claim 11 wherein the product is embossed or thermobonded or needlepunched or spunlaced or adhesive bonded or pressed or combination.

### Claim 18 (depends on 12)

The composite product of claim 12 wherein the basis weight of each of the webs is from 5 to 300 g/m2.