# US 9,433,154 B2 · Biodegradable landscape fabric

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- Number: US 9,433,154 B2
- Document ID: US9433154B2
- Status: Granted
- Kind: B2
- Application number: 13/552,772
- Filed: 2012-07-19
- Published: 2013-07-18
- Granted: 2016-09-06
- Earliest claimed: 2011-07-22
- Assignees: Jacob Holm & Sons AG
- Applicants: Thomas Edward Benim; Bruce A Yost
- Inventors: Thomas Edward Benim; Bruce A Yost
- Web page: https://patentgrep.com/patent/US9433154B2

## CPC

- A01G 13/33: Sheets or films
- D04H 1/70: characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12)
- D04H: MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL (weaving D03; knitting D04B; braiding D04C; net-making D04G; sewing D05B; tufting D05C; finishing non-woven fabrics D06); FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING {; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION}(non-woven fabrics having an intermediate or external layer of a different kind, e.g. of woven fabric, B32B)

## Abstract

The present invention relates to a biodegradable landscape fabric comprising spunlaced cellulosic fibers which comprise 0% to 75% wood pulp fibers and 25% to 100% regenerated cellulosic fibers without fiber binding materials and may further comprise a colorant.

## Claims

### Claim 1

A biodegradable landscape fabric, comprising
spunlaced cellulosic fibers which comprise 25% to 75% wood pulp fibers and 25% to 75% regenerated cellulosic fibers and without fiber binding materials,
the biodegradable landscape fabric being about 55% softwood pulp fibers and about 45% spunlaced regenerated cellulosic fiber,
the softwood pulp fibers combined on top of the spunlaced regenerated cellulosic fiber forming a dried combined sheet;
the combined sheet spunlaced together into a single consolidated sheet;
the single consolidated sheet of biodegradable landscape fabric being substantially cellulosic.

### Claim 2 (depends on 1)

The biodegradable landscape fabric according to claim 1, wherein the regenerated cellulosic fibers are selected from the group consisting of lyocell and rayon.

### Claim 3 (depends on 1)

The biodegradable landscape fabric according to claim 1, comprising of colorant.

### Claim 4

A biodegradable landscape fabric, comprising
at least a portion of the biodegradable landscape fabric including at least about 25% to 75% wood pulp fibers and including at least about 25% to 75% regenerated cellulosic fibers and without fiber binding materials,
wherein the biodegradable landscape fabric includes about 55% softwood pulp fibers at about 44.4 g/m2 and about 45% lyocell spunlaced regenerated cellulosic fiber at about 32 g/m2;
the softwood pulp fibers combined on top of the lyocell fiber to form a combined sheet;
the combined sheet spunlaced together into a single combined sheet;
wherein the biodegradable landscape fabric has a basis weight of about 71 g/m2.

### Claim 5

A method of making a biodegradable landscape fabric, comprising:
spunlacing into a web lyocell fiber at about 32 g/m2;
forming into a sheet softwood pulp fibers at about 44 g/m2;
combining the sheet of softwood pulp fibers to a position on top of the lyocell web;
spunlacing the combined sheets of softwood pulp fibers and lyocell web into a single sheet;
drying the single sheet;
forming the dried single sheet into a biodegradable landscape fabric having a basis weight of about 71 g/m2.