Spunbonded/meltblown/spunbonded laminate face mask
AssigneeKimberly-Clark Worldwide, Inc.
InventorsMelissa Robyn Gaynor, Jeffrey Lawrence McManus
Life of this patent
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Abstract
The present invention provides filtration materials and face masks that include a spunbonded/meltblown/spunbonded (SMS) laminate.
Claims20
A face mask comprising a spunbonded/meltblown/spunbonded laminate wherein the spunbonded/meltblown/spunbonded laminate comprises an electret material that is thermally point bonded.
A face mask comprising a mouth and nose covering portion wherein the nose and mouth covering portion is a single layer of a thermally point bonded, gas pervious spunbonded/meltblown/spunbonded laminate that is electret treated.
A face mask comprising a mouth and nose covering portion that consists essentially of a thermally point-bonded spunbonded/meltblown/spunbonded laminate:
- having a basis weight of from about 0.8 ounces per square yard to about 2 ounces per square yard;
- having a bond area in the range of from about 10 percent to about 20 percent;
- wherein each layer of the spunbonded/meltblown/spunbonded laminate comprises:
- from about 0.5 to about 5 percent by weight of a ferroelectric material based on the weight of the layer;
- and
- from 1 to about 5 percent by weight of a telomer based on the weight of the layer.
Dependencies are inferred from the claim text.