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US 12,735,836 B2Granted
Nonwoven fibrous web
Assignee3M Innovative Properties Company
InventorsMichelle M. Mok, Michael R. Berrigan, Aniruddha A. Upadhye, Andrew W. Vail
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Abstract
A fibrous web comprising multiple fibers, wherein the fibrous web has a major web surface; wherein the fibers near the major web surface comprise an outer surface; wherein the outer surface of the fibers compromises a recrystallized skin layer; wherein the recrystallized skin layer has a plurality of textures; and wherein at least another part of the outer surface is smooth.
Claims14
A fibrous web comprising multiple fibers,
- wherein the fibrous web has a major web surface;
- wherein the fibers near the major web surface comprise an outer surface, the fibers comprising at least one of polyethylene terephthalate, polyethylene terephthalate blended with glycol-modified polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, or mixture thereof;
- wherein the outer surface of the fibers compromises a recrystallized skin layer;
- wherein the recrystallized skin layer has a plurality of textures;
- and
- wherein at least another part of the outer surface is smooth.
3 more elements
A method, the method comprising:
- producing a fibrous web comprising multiple fibers having an outer surface, the fibers comprising at least one of polyethylene terephthalate, polyethylene terephthalate blended with glycol-modified polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, or mixtures thereof;
- exposing the outer surface of a pulsed ultraviolet flashlamp radiation to prime the outer surface of the fibers;
- and
- exposing the fibers to a solvent to create a recrystallized skin layer on the outer surface, wherein the recrystallized skin layer has a plurality of textures and wherein at least another part of the outer surface is smooth.
1 more element
Dependencies are inferred from the claim text.