Carded staple fiber nonwovens
AssigneeThe Procter & Gamble Company
InventorsGerard A. Viens, Stephen Lebeuf Hardie, Edward Paul Carlin, Ronda Lynn Glassmeyer
Life of this patent
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Abstract
A carded staple fiber nonwoven having a basis weight of between about 45 grams per square meter (gsm) and about 150 gsm, includes a blend of absorbing fibers, stiffening fibers and filler fibers. The carded staple fiber nonwoven is non-heat stiffened, has an air permeability of between about 100 m3/m2/min and about 500 m3/m2/min, and a pore radius mode of between about 60 μm and about 120 μm.
Claims17
A carded staple fiber nonwoven having a basis weight of between about 40 grams per square meter (gsm) and about 150 gsm, the carded staple fiber nonwoven comprising a blend of absorbing fibers, stiffening fibers and filler fibers, wherein the carded staple fiber nonwoven is non-heat stiffened, has an air permeability of between about 100 m3/m2/min and about 500 m3/m2/min, and a pore volume radius mode of between about 60 μm and about 120 μm, wherein the stiffening fibers form about 10% to about 50%, by weight, of the carded staple fiber nonwoven, wherein the absorbing fibers form about 10% to about 50%, by weight, of the carded staple fiber nonwoven, and wherein the filler fibers form about 60% or less, by weight, of the carded staple fiber nonwoven.
A carded staple fiber nonwoven, comprising:
- a) about 10% to about 50%, by weight, of stiffening fibers comprising hollow, spiral fibers formed from polyethylene terephthalate (PET), wherein the stiffening fibers have a linear density of between about 6 dtex and about 15 dtex;
- b) about 10% to about 50%, by weight, of absorbing fibers comprising tri-lobal fibers formed from rayon, wherein the absorbing fibers have a linear density of between about 2 dtex and about 6 dtex;
- and
- c) about 1% to about 60%, by weight, of filler fibers comprising solid, round fibers formed from polypropylene (PP), wherein the filler fibers have a linear density of about 3 dtex or greater;
- wherein the carded staple fiber nonwoven has a basis weight of between about 40 grams per square meter (gsm) and about 150 gsm, is non-heat stiffened, has an air permeability of between about 100 m3/m2/min and about 500 m3/m2/min, and a pore radius mode of between about 60 μm and about 120 μm.
A carded staple fiber nonwoven, comprising:
- a) about 15% to about 35%, by weight, of stiffening fibers comprising hollow, spiral fibers formed from polyethylene terephthalate (PET), wherein the stiffening fibers have a linear density of between about 6 dtex and about 15 dtex;
- b) about 10% to about 50%, by weight, of absorbing fibers comprising tri-lobal fibers formed from rayon, wherein the absorbing fibers have a linear density of between about 2 dtex and about 6 dtex;
- and
- c) about 1% to about 60%, by weight, of filler fibers comprising solid, round fibers formed from polypropylene (PP), wherein the filler fibers have a linear density of about 3 dtex or greater;
- wherein the carded staple fiber nonwoven has a basis weight of between about 40 grams per square meter (gsm) and about 150 gsm, is non-heat stiffened, has an air permeability of between about 100 m3/m2/min and about 500 m3/m2/min, and a pore volume radius mode of between about 60 μm and about 120 μm.
Dependencies are inferred from the claim text.