# US 4,391,871 A · Meat packaging shroud

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,391,871 A
- Document ID: US4391871A
- Status: Granted
- Kind: A
- Application number: 06/448,306
- Filed: 1982-12-09
- Granted: 1983-07-05
- Earliest claimed: 1982-12-09
- Assignees: Milliken Research Corporation
- Inventors: Jack S. Rogers; Kenneth H. Sanders
- Web page: https://patentgrep.com/patent/US4391871A

## CPC

- D04B 21/16: incorporating synthetic threads
- B65D 65/38: Packaging materials of special type or form
- D06M 13/02: with hydrocarbons
- Y10T 428/31801: Of wax or waxy material
- Y10T 442/456: Including additional strand inserted within knit fabric
- D04B: KNITTING
- B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A packaging material, preferably for meat, which is composed of a weft inserted, warp knit substrate fabric and a coating of microcrystalline wax on both sides of the substrate fabric.

## Claims

### Claim 1

A fabric particularly useful as a wrapping for foodstuffs, such as meat comprising: a layer of warp knit, weft inserted, synthetic fabric and a layer of wax coated to both sides of said layer, said warp knit fabric having a textured polyester continuous filament weft inserted yarn and a continuous filament chain stitch.

### Claim 2 (depends on 1)

The fabric of claim 1 wherein said weft inserted yarn is approximately 150 denier.

### Claim 3 (depends on 2)

The fabric of claim 2 wherein said chain stitch yarn is within the range of 40-70 denier.

### Claim 4 (depends on 1)

The fabric of claim 1 wherein said fabric has a total weight of less than 10 ounces per square yard.

### Claim 5 (depends on 4)

The fabric of claim 4 wherein said weft inserted yarn is approximately 150 denier.

### Claim 6 (depends on 5)

The fabric of claim 5 wherein said chain stitch yarn is within the range of 40-70 denier.

### Claim 7

A method of producing a fabric for foodstuff packaging comprising the steps of: delivering a warp knit, weft inserted continuous filament fabric into a hot bath of microcrystalline wax, taking the wax coated fabric out of the bath and removing the excess wax therefrom, smoothing the surface of the wax on the surface of the fabric, cooling the hot wax on the fabric to set same and taking up the cooled fabric.