IP Library Granted Patent US 11,723,421
Granted Patent B2
US 11,723,421 · App. 16/765,985 · Granted Aug 15, 2023

System and method for absorbing moisture within a face mask

Inventors: Charlie Han (Morris Plains, NJ); Kevin Lu (Morris Plains, NJ); Robin Xiang (Morris Plains, NJ); Jerry Shen (Morris Plains, NJ)
Assignee: HONEYWELL INTERNATIONAL INC.
A41D13/1192A41D31/10A41D31/12A41D31/305A62B23/025B32B5/022B32B5/26A41D2500/30B32B2262/0253B32B2262/0284B32B2307/726B32B2571/00
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Quick Facts
Patent No.
US 11,723,421
App. No.
16/765,985
Granted
Aug 15, 2023
Kind
B2
Abstract

A face mask ( 100 ) may comprise at least one layer of filtration material ( 218 ) configured to filter one or more harmful substances from the air breathed by a user; at least one layer of absorbent material ( 214 ) configured to absorb moisture exhaled by the user, wherein the at least one layer of absorbent material ( 214 ) spans the entire inner surface area of the mask ( 100 ); at least one layer of waterproof material ( 216 ) located between the at least one layer of filtration material ( 218 ) and the at least one layer of absorbent material ( 214 ) configured to prevent moisture from the absorbent material from contacting the filtration material; and at least one layer of anti-bacterial material ( 212 ) located adjacent to the at least one layer of absorbent material ( 214 ) and forming the inner surface of the mask ( 100 ). The face mask ( 100 ) can absorb moisture exhaled by a user.

Claims (16)

1. A face mask comprising:

at least one layer of filtration material configured to filter one or more harmful substances from air breathed by a user;

at least one layer of absorbent material configured to absorb moisture exhaled by the user; and

at least one layer of waterproof material located between the at least one layer of filtration material and the at least one layer of absorbent material configured to prevent moisture from the at least one layer of absorbent material from contacting the at least one layer of filtration material, wherein:

the at least one layer of absorbent material and the at least one layer of waterproof material each span the entire inner surface area of the mask;

the mask is configured to allow air to pass through the at least one layer of filtration material and the at least one layer of absorbent material; and

the at least one layer of absorbent material comprises super absorbent fibers.

2. The face mask of claim 1 , wherein the at least one layer of waterproof material comprises a spunbond waterproof material.

3. The face mask of claim 1 , further comprising at least one layer of anti-bacterial material located adjacent to the at least one layer of absorbent material and forming the inner surface of the mask.

4. The face mask of claim 3 , wherein the at least one layer of anti-bacterial material comprises a spunlace anti-bacterial material.

5. The face mask of claim 1 , further comprising at least one outer layer comprising a hydrophobic material located adjacent to the at least one layer of filtration material and configured to protect the at least one layer of filtration material and prevent moisture from entering the mask from the exterior of the mask.

6. The face mask of claim 5 , wherein the at least one outer layer comprises a spunbond nonwoven material.

7. The face mask of claim 1 , further comprising an exhalation valve configured to allow exhaled breath from the user to exit the mask.

8. The face mask of claim 1 , wherein the at least one layer of absorbent material further comprises one or more of polyethylene terephthalate, or ethylene-propylene side-by-side fiber.

9. The face mask of claim 8 , wherein the fibers of the at least one layer of absorbent material are configured to be combined to form a layer of the mask via needle punching.

10. The face mask of claim 8 , wherein the fibers of the at least one layer of absorbent material are configured to be combined to form a layer of the mask via through-air bonding.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2025
From: HONEYWELL INTERNATIONAL INC.
To: HONEYWELL SAFETY PRODUCTS USA, INC.
Reel/Frame 070538/0643 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 29, 2020
From: HAN, CHARLIE; LU, KEVIN; XIANG, ROBIN; SHEN, JERRY
To: HONEYWELL INTERNATIONAL INC.
Reel/Frame 054212/0543 →