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US 6,417,120 B1Granted
Particle-containing meltblown webs
AssigneeKimberly-Clark Worldwide, Inc.
InventorsPatricia Ann Mitchler, Wilfred Eugene Riddell, Carmen Ann Baker
Life of this patent
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Abstract
A meltblown web having meltblown fibers and particles is provided. The particles are embedded in and retained by one or more meltblown fibers as a result of surface penetration of the particles into one or more meltblown fibers. The surface penetration of any particle into one or more meltblown fibers is generally slight thus leaving a substantial amount of the surface area of any particle available for interaction with any medium to which the web is exposed.
Claims9
A substantially nondusting meltblown web, comprising:
- (a) at least one air-formed nonparticle-containing layer comprising meltblown fibers and staple fibers, the staple fibers engaging at least some of the meltblown fibers to space the meltblown fibers apart from each other, and the staple fibers being retained within the nonparticle-containing layer by entanglement with the meltblown fibers;
- and
- (b) at least one air-formed particle-containing layer comprising meltblown fibers, particles and staple fibers, the particles being retained in the particle-containing layer by surface penetration into the meltblown fibers, the staple fibers engaging at least some of the meltblown fibers to space the meltblown fibers apart from each other, and the staple fibers being retained within the particle-containing layer by entanglement with the meltblown fibers.
Dependencies are inferred from the claim text.