Method of making an acetate tow band with shape and size used for coding

Patent metadata

Field	Value
Publication number	US-10717029-B2
Application number	US-201715824200-A
Country	US
Kind code	B2
Filing date	Nov 28, 2017
Priority date	Jun 27, 2014
Publication date	Jul 21, 2020
Grant date	Jul 21, 2020

Abstract

Disclosed are fibers comprising identification fibers which can be used for tracking and tracing fibers, yarns, fiber bands, and/or articles comprising the fibers through at least part of the supply chain. Each identification fiber exhibits at least one distinct feature. Each group of distinguishable identification fibers can exhibit a taggant cross-section shape, a taggant cross-section size, or combination of the same taggant cross-section shape and same taggant cross-section size. The distinct features and the number of fibers in each group of distinguishable identification fibers can represent at least one supply chain component of the fibers. The distinct features can be detectable in an article comprising the fibers.

First claim

We claim:

1. A method of making an acetate tow band comprising cellulose acetate fibers, wherein the cellulose acetate fibers comprise identification fibers and standard fibers, wherein the method comprises:
(a) co-producing the identification fibers and the standard fibers; and
(b) combining the identification fibers and the standard fibers into the acetate tow band,
wherein each of the identification fibers exhibits at least one distinct feature, wherein the distinct features comprise 1 to 10 taggant cross-section shapes and/or 1 to 10 taggant cross-section sizes, wherein the identification fibers consist of 1 to 20 groups of distinguishable identification fibers, each group of the distinguishable identification fibers being formed by the identification fibers having the same taggant cross-section shape, the same taggant cross-section size, or the same combination of taggant cross-section shape and taggant cross-section size, wherein a number of the identification fibers in each group of the distinguishable identification fibers is defined as a fiber count, wherein at least one of the fiber counts corresponds to a taggant fiber count, and wherein (i) the distinct features in each group of distinguishable identification fibers and (ii) the one or more taggant fiber counts are representative of at least one supply chain component of the acetate tow band.

2. The method of claim 1 , wherein the taggant cross section sizes range from 1 dpf to 30 dpf.

3. The method of claim 1 , wherein a number of taggant fiber counts for each group of the distinguishable identification fibers ranges from 1 to 10.

4. The method of claim 1 , wherein the identification fibers are produced using distinguishable spinneret holes, each group of the distinguishable spinneret holes being formed by spinneret holes having the same distinguishable spinneret hole geometry, wherein each group of the distinguishable identification fibers are produced using a corresponding group of the distinguishable spinneret holes.

5. The method of claim 4 , wherein all of the distinguishable spinneret holes are contained in a single spinneret.

6. The method of claim 4 , wherein a portion of the taggant cross-section shapes are produced using spinneret hole geometries selected from the group consisting of triangle, circle, rectangle, square, flattened round, trapezoid hexagon, pentagon, and D-shaped.

7. The method of claim 1 , wherein a number of the taggant cross-section sizes ranges from 1 to 5, wherein a ratio of at least one of the taggant cross-section sizes to an average cross-section size of the standard fibers ranges from 10:1 to 1.1:1, and wherein the taggant cross-section size and the average cross-section size are determined based upon an effective diameter.

8. The method of claim 1 , wherein a number of the taggant cross-section sizes ranges from 1 to 5, wherein a ratio of at least one of the taggant cross-section sizes to an average cross-section size of the standard fibers ranges from 1:10 to 1:1.1, and wherein the taggant cross-section size and the average cross-section size are determined based upon an effective diameter.

9. The method of claim 1 , wherein the number of taggant cross-section shapes ranges from 1 to 5, the number of taggant cross-section sizes ranges from 1 to 4, and wherein a number of taggant fiber counts for each group of the distinguishable identification fibers ranges from 1 to 3.

10. The method of claim 1 , wherein the identification fibers comprise reference fibers, wherein the reference fibers exhibit a reference cross-section size and a reference cross-section shape, wherein a ratio of each of the taggant cross-section sizes to the reference cross-section size ranges from 10:1 to 1:10, and wherein the reference cross-section size and the taggant cross-section sizes are determined based upon an effective diameter.

11. The method of claim 1 , wherein the at least one supply chain component comprises at least one of a manufacturer of the acetate tow band, a manufacture site of the acetate tow band, a manufacturing line of the acetate tow band, a production run of the acetate tow band, a production date of the acetate tow band, a package of the acetate tow band, a warehouse of the acetate tow band, a customer of the acetate tow band, and/or a ship-to location of the acetate tow band.

12. The method of claim 11 , wherein the at least one supply chain component comprises the manufacturer of the acetate tow band and the customer of the acetate tow band.

13. The fibers of claim 11 , wherein the at least one supply chain component comprises, the manufacturer of the acetate tow band and the ship-to location of the acetate tow band.

14. A method of making an acetate tow band comprising cellulose acetate fibers, wherein the cellulose acetate fibers comprise identification fibers and standard fibers, wherein the method comprises:
(a) co-producing the identification fibers and the standard fibers; and
(b) combining the identification fibers and the standard fibers into the acetate tow band,
wherein each of the identification fibers exhibits at least one distinct feature, wherein the distinct features comprise 1 to 10 taggant cross-section shapes and/or 1 to 10 taggant cross-section sizes, wherein the identification fibers consist of 1 to 20 groups of distinguishable identification fibers, each group of the distinguishable identification fibers being formed by the identification fibers having the same taggant cross-section shape, the same taggant cross-section size, or the same combination of taggant cross-section shape and taggant cross-section size, wherein a number of the identification fibers in each group of the distinguishable identification fibers is defined as a fiber count, wherein at least one of the fiber counts corresponds to a taggant fiber count, and wherein (i) the distinct features in each group of distinguishable identification fibers and (ii) the one or more taggant fiber counts are representative of a manufacturer of the acetate tow band and a customer of the acetate tow band or the manufacturer of the acetate tow band and a ship-to location of the acetate tow band.

15. The method of claim 14 wherein the distinct features comprise 1 to 10 taggant cross-section shapes and 1 to 5 taggant cross-section sized.

16. The method of claim 14 , wherein the identification fibers are produced using distinguishable spinneret holes, each group of the distinguishable spinneret holes being formed by spinneret holes having the same distinguishable spinneret hole geometry, wherein each group of the distinguishable identification fibers are produced using a corresponding group of the distinguishable spinneret holes.

17. The method of claim 16 , wherein all of the distinguishable spinneret holes are contained in a single spinneret.

18. The method of claim 16 , wherein a portion of the taggant cross-section shapes are produced using spinneret hole geometries selected from the group consisting of triangle, circle, rectangle, square, flattened round, trapezoid hexagon, pentagon, and D-shaped.

Assignees

• Eastman Chem Co

Inventors

• Mcleod Andrew Ervin
• Gaynor Scott Gregory
• Wilson Steven Anthony
• Salyer Lydia J
• Collazo Humberto
• Renfro Larry Wayne
• Steach Jeremy Kenneth
• Seiler Brian Douglas

Classifications

• G06F18/24

  Classification techniques · CPC title

• B01D39/1623 Primary

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• A24D3/04 Primary

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• G06T7/0004

  Industrial image inspection · CPC title

• G07D7/2033

  Matching unique patterns, i.e. patterns that are unique to each individual paper · CPC title