IP Library › Granted Patent US 11,618,977
Granted Patent B2
US 11,618,977 · App. 17/118,679 · Granted Apr 4, 2023

Fibrous elements and fibrous structures employing same

Inventors: Steven Lee Barnholtz (West Chester, OH); Michael Donald Suer (Cincinnati, OH); Paul Dennis Trokhan (Hamilton, OH); Alan Howard Ullman (Blue Ash, OH)
Assignee: The Procter & Gamble Company
D01F1/10D04H1/407D04H1/4291D04H1/56D21H13/00D21H27/002Y10T428/1397Y10T428/298
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Quick Facts
Patent No.
US 11,618,977
App. No.
17/118,679
Granted
Apr 4, 2023
Kind
B2
Abstract

Fibrous elements, such as filaments, and more particularly to fibrous elements employing a polymer and a wetting agent, methods for making such fibrous elements, fibrous structures employing such fibrous elements, methods for making such fibrous structures and packages containing such fibrous structures are provided.

Claims (20)

1. A method for making a paper towel comprising a co-formed fibrous structure, the method comprising a step of commingling from about 30% to 90% by dry weight of the paper towel of a plurality of pulp fibers and from about 10% to about 70% by dry weight of the paper towel of a plurality of meltblown filaments derived from a polymer composition comprising 100% by weight of the polymer composition of one or more biodegradable, thermoplastic polymers selected from the group consisting of polylactic acid, polyhydroxyalkanoate, polycaprolactone, and mixtures thereof such that the paper towel exhibits a contact angle of less than 80°.

2. The method according to claim 1 wherein the paper towel exhibits a contact angle of less than 75°.

3. The method according to claim 1 wherein the paper towel further comprises a wetting agent, wherein the wetting agent comprises a surfactant.

4. The method according to claim 1 wherein the paper towel further comprises a wetting agent selected from the group consisting of: silicone surfactants, polyethylene glycols, glycols and mixtures thereof.

5. The method according to claim 1 wherein the paper towel further comprises a wetting agent, wherein the wetting agent is a melt additive wetting agent.

6. The method according to claim 1 wherein the one or more biodegradable, thermoplastic polymers comprises polylactic acid.

7. The method according to claim 1 wherein the plurality of pulp fibers comprises wood pulp fibers.

8. The method according to claim 1 wherein the step of commingling comprises commingling from about 40% to 80% by dry weight of the paper towel of a plurality of pulp fibers and from about 20% to about 60% by dry weight of the paper towel of a plurality of meltblown filaments.

9. The method according to claim 8 wherein the step of commingling comprises commingling from about 50% to 70% by dry weight of the paper towel of a plurality of pulp fibers and from about 30% to about 50% by dry weight of the paper towel of a plurality of meltblown filaments.

10. A method for making a paper towel comprising a co-formed fibrous structure, the method comprising a step of commingling a plurality of pulp fibers and a plurality of meltblown filaments derived from a polymer composition comprising 100% by weight of the polymer composition of one or more biodegradable, thermoplastic polymers selected from the group consisting of polylactic acid, polyhydroxyalkanoate, polycaprolactone, and mixtures thereof at a weight ratio of filaments to pulp fibers of from at least about 1:1 such that the paper towel exhibits a contact angle of less than 80°.

11. The method according to claim 10 wherein the step of commingling comprises commingling the plurality of meltblown filaments and the plurality of pulp fibers at a weight ratio of filaments to pulp fibers of from at least about 1:1.5 such that the paper towel exhibits a contact angle of less than 80°.

12. The method according to claim 11 wherein the step of commingling comprises commingling the plurality of meltblown filaments and the plurality of pulp fibers at a weight ratio of filaments to pulp fibers of from at least about 1:2 such that the paper towel exhibits a contact angle of less than 80°.

13. The method according to claim 10 wherein the paper towel exhibits a contact angle of less than 75°.

14. The method according to claim 10 wherein the paper towel further comprises a wetting agent, wherein the wetting agent comprises a surfactant.

15. The method according to claim 10 wherein the paper towel further comprises a wetting agent selected from the group consisting of: silicone surfactants, polyethylene glycols, glycols and mixtures thereof.

16. The method according to claim 10 wherein the paper towel further comprises a wetting agent, wherein the wetting agent is a melt additive wetting agent.

17. The method according to claim 10 wherein the one or more biodegradable, thermoplastic polymers comprises polylactic acid.

18. The method according to claim 10 wherein the plurality of pulp fibers comprises wood pulp fibers.

19. The method according to claim 10 wherein the step of commingling comprises commingling from about 30% to 90% by dry weight of the paper towel of a plurality of pulp fibers and from about 10% to about 70% by dry weight of the paper towel of a plurality of meltblown filaments.

20. The method according to claim 19 wherein the step of commingling comprises commingling from about 40% to 80% by dry weight of the paper towel of a plurality of pulp fibers and from about 20% to about 60% by dry weight of the paper towel of a plurality of meltblown filaments.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 5, 2021
From: BARNHOLTZ, STEVEN LEE; SUER, MICHAEL DONALD; TROKHAN, PAUL DENNIS; ULLMAN, ALAN HOWARD
To: COMPANY, THE PROCTER & G, COMP
Reel/Frame 054807/0601 →
Continuity (3)
Division 12917585 · Nov 2, 2010
Provisional Application 61257275 · Nov 2, 2009
Related Publication 20210095395A1 · Apr 1, 2021
Cited By (1)
US 12,203,219