Flexible absorbent boards
First Claim
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1. A product made by the process comprising:
- forming a slurry of water is no more than about 0.1% by weight solids, said solids comprising cellulosic fibers and particulate hydrocolloidal material in a ratio of at least 0.01 grams of hydrocolloidal material per gram of cellulose fibers;
forming a wet web from said slurry;
drying said web to a water content of less than 10.0% by weight to form an undensified dry web;
and increasing the density of said dry web by at least 10%;
whereby said densified dry web has a high tensile strength and low stiffness relative to said undensified dry web, said densified web having a tensile of at least 10 kg/cm2, a Gurley Stiffness of less than 40 grams, and a thickness of more than 0.3 mm.
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Abstract
An absorbent material is provided for body fluid absorbent products which material has relatively high tensile strength, and is extremely flexible and may be incorporated into absorbent products without substantial loss in user'"'"'s comfort. The material is made by forming a slurry of water wherein the solids comprise cellulosic fibers and hydrocolloidal material. The wet web is formed from the slurry and the web is then dried. The dry web is then compacted to a density of at least 110% and preferably at least 150% based on the density of the dry web. The resulting product has a tensile strength of at least 10 Kg/cm2 and the Gurley Stiffness of less than about 40 gm.
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Citations
17 Claims
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1. A product made by the process comprising:
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forming a slurry of water is no more than about 0.1% by weight solids, said solids comprising cellulosic fibers and particulate hydrocolloidal material in a ratio of at least 0.01 grams of hydrocolloidal material per gram of cellulose fibers; forming a wet web from said slurry; drying said web to a water content of less than 10.0% by weight to form an undensified dry web; and increasing the density of said dry web by at least 10%; whereby said densified dry web has a high tensile strength and low stiffness relative to said undensified dry web, said densified web having a tensile of at least 10 kg/cm2, a Gurley Stiffness of less than 40 grams, and a thickness of more than 0.3 mm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification