IP Library Granted Patent US 11,353,425
Granted Patent B2
US 11,353,425 · App. 16/996,272 · Granted Jun 7, 2022

Method for measuring static attraction propensity

Inventors: Wai-shing Yung (Pensacola, FL); Harrie Schoots (League City, TX); Rahim Jindani (Houston, TX); Victor G. Kholodkov (Pensacola, FL); Jeffrey L. Walker (Cantonment, FL)
Assignee: Ascend Performance Materials Operations LLC
G01N27/60
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Quick Facts
Patent No.
US 11,353,425
App. No.
16/996,272
Granted
Jun 7, 2022
Kind
B2
Abstract

A method for measuring the attraction propensity of fabric including the steps of charging a neutralized test fabric, optionally by contacting with a charging fabric, presenting the charged test fabric a predetermined distance from a static-influenced agent such that at least a portion of the static-influenced agent attaches to the charged test fabric, and determining the quantity of attached static-influenced agent.

Claims (29)

1. A method for measuring the attraction propensity of a fabric, the method comprising the steps of:

charging a neutralized test fabric by contacting with a charging fabric;

presenting the charged test fabric a predetermined distance from a static-influenced agent such that at least a portion of the static-influenced agent attaches to the charged test fabric; and

determining the quantity of attached static-influenced agent.

2. The method of claim 1 wherein the charging comprises tribocharging the neutralized test fabric.

3. The method of claim 2 , wherein the tribocharged test fabric has an electric potential of greater than ±0 kV.

4. The method of claim 2 , wherein the tribocharging comprises rubbing the charging fabric along a surface of the neutralized test fabric at a speed from 1 in/s to 50 in/s.

5. The method of claim 1 , wherein the charged test fabric has an electric potential of greater than ±0 kV.

6. The method of claim 1 , wherein the static-influenced agent is present in a pre-measured amount.

7. The method of claim 2 , further comprising conditioning the neutralized test fabric and/or the charged test fabric to a controlled environment.

8. The method of claim 7 , wherein the controlled environment is maintained at a temperature from 10° C. to 30° C.

9. The method of claim 7 , wherein the controlled environment is maintained at a relative humidity from 0% to 70%.

10. The method of claim 7 , wherein the controlled environment is maintained at a relative humidity from 0% to 30%.

11. The method of claim 1 , wherein the charging comprises tumbling.

12. The method of claim 1 , wherein the predetermined distance is based on properties of the static-influenced agent.

13. The method of claim 1 , further comprising:

neutralizing a base fabric to yield a neutralized test fabric.

14. The method of claim 13 , wherein the neutralizing comprises:

washing and drying the test fabric; and

conditioning the test fabric to the controlled environment.

15. The method of claim 14 , wherein the neutralizing further comprises:

neutralizing the static charge of the test fabric.

16. The method of claim 1 , further comprising measuring the electric charge of the charged test fabric.

17. The method of claim 1 , wherein the test fabric comprises natural fibers, synthetic fibers of polyester, polyamide, polyalkene, or polyacrylic, composite fibers, woven or non-woven fabrics, laminate fabrics, combinations of natural and synthetic fibers, or blends thereof.

18. The method of claim 1 , wherein the charging fabric comprises natural fibers, synthetic fibers of polyester, polyamide, polyalkene, or polyacrylic, composite fibers, woven or non-woven fabrics, laminate fabrics, combinations of natural and synthetic fibers, or blends thereof.

19. The method of claim 1 , wherein the charging fabric comprises nylon-6,6, PET, wool, wool blends, nylon-cotton blends, or combinations thereof.

20. The method of claim 1 , wherein the static-influenced agent comprises polyester lint, cotton lint, human hair, cat hair, dog hair, dust, pollen, allergens, irritants, spores, or combinations thereof.

21. The method of claim 1 , wherein the predetermined distance is less than 5 inches.

22. The method of claim 1 , wherein the predetermined distance is less than 2 inches.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Dec 23, 2025
From: WILMINGTON SAVINGS FUND SOCIETY, FSB
To: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Reel/Frame 074050/0090 →
SECURITY INTEREST Recorded Dec 23, 2025
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WILMINGTON SAVINGS FUND SOCIETY, FSB
Reel/Frame 074056/0183 →
SECURITY INTEREST Recorded Dec 19, 2025
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 074007/0183 →
SECURITY INTEREST Recorded Apr 10, 2025
From: BANK OF AMERICA, N.A.
To: WILMINGTON SAVINGS FUND SOCIETY, FSB
Reel/Frame 070811/0705 →
SECURITY INTEREST Recorded Dec 8, 2022
From: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
To: WELLS FARGO CAPITAL FINANCE, LLC
Reel/Frame 062094/0172 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 15, 2020
From: YUNG, WAI-SHING; SCHOOTS, HARRIE; JINDANI, RAHIM; KHOLODKOV, VICTOR G.; WALKER, JEFFREY L.
To: ASCEND PERFORMANCE MATERIALS OPERATIONS LLC
Reel/Frame 053775/0507 →
Continuity (2)
Provisional Application 62889360 · Aug 20, 2019
Related Publication 20210055261A1 · Feb 25, 2021