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US 4,355,066 AGranted
Spot-bonded absorbent composite towel material having 60% or more of the surface area unbonded
AssigneeThe Kendall Company
InventorNicholas S. Newman
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Abstract
An absorbent hydrophilic and oleophilic multipurpose composite towel material having an inner absorbent layer of cellulosic material and outer layers of microfibrous polyolefin material on opposite sides of the inner layer, the outer layers being spot fusion bonded through the inner layer to produce a towel having exceptionally high void volume for improved absorbency.
Claims6
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising:
- an inner hydrophilic absorbent layer of cellulosic material;
- and,
- outer layers of microfibrous polyolefin material on opposite sides of said inner layer;
- said outer layers being fusion bonded through said inner layer in discreet spot areas said spot bonded areas leaving the unbonded areas more than 60% of the whole and as large as possible consistant with requirements of material integrity, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
1 more element
An absorbent hydrophilic and oleophilic multipurpose composite towel material comprising:
- an inner hyrophilic absorbent layer of cellulosic material containing between about 5 to 30 percent of thermoplastic bonding powder therein
- a reinforcing layer of lightweight fabric material positioned within said cellulosic material
- outer layers of microfibrous polyolefin material composed of melt-blown microfibers having diameters in the range of about 2 to about 20 microns on opposite sides of said inner layer and said reinforcing layer,
- said composite towel material being fusion bonded in spot areas through said inner layer and said reinforcing layer to leave between 75 and 95% of the area of said towel material unbonded, to produce a bonded composite material having low density and exceptionally high void volume for improved liquid absorbency.
1 more element
Dependencies are inferred from the claim text.