Fibres of increased specific surface area, a method for their manufacture, fluff pulp consisting of such fibres and the use of the fibres as absorption material
AssigneeMolnlycke AB
InventorsInger V. Eriksson, Goran E. Annergren, Lars E. R. Wagberg
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Abstract
Fibres which have an increased specific surface area and improved absorption properties, preferably intended for use in the form of fluff pulp in absorption articles such as diapers, incontinence guards, etc., in which the fibres present a porous layer of hydrophilic chemicals anchored on the fibre surface; a method of producing such fibres, their use in absorption articles and an absorption material which includes the fibres.
Claims25
Fibres of organic material in the form of fluff, for use in absorption articles, wherein the fibres have firmly anchored on surfaces thereof by chemical bonding a porous hydrophilic layer having a thickness less than 2000 .ANG. and containing as a main component positive inorganic ions, the specific surface area of the fibres being at least 1.2 m.sup.2 /g and the hydrophilic porous layer having a contact angle with water of at most 70.degree..
Fibres of organic material in the form of fluff, for use in absorption articles, wherein the fibres have firmly anchored on surfaces thereof by chemical precipitation a porous hydrophilic layer having a thickness less than 2000 .ANG. and containing as a main component positive inorganic ions, the specific surface area of the fibres being at least 1.2 m.sup.2 /g, and the hydrophilic porous layer having a contact angle with water of at most 70.degree..
A method of producing fibres of organic material, in the form of fluff, by treating the fibres with chemicals wherein positive inorganic ions are a main component in such a way as to apply to the fibre surfaces a porous hydrophilic layer that has a thickness less than 2000 .ANG. and that includes said chemicals, said layer being firmly anchored to the fibre surfaces by chemical bonding, so that subsequent to treatment the specific surface area of the fibres is at least 1.2 m.sup.2 /g and the hydrophilic porous layer presents a contact angle with water of at most 70.degree..
A method of producing fibres of organic material, in the form of fluff, by treating the fibres with chemicals wherein positive inorganic ions are a main component in such a way as to apply to the fibre surfaces a porous hydrophilic layer that has a thickness less than 2000 .ANG. and that includes said chemicals, said layer being firmly anchored to the fibre surfaces by chemical precipitation, so that subsequent to treatment the specific surface area of the fibres is at least 1.2 m.sup.2 /g, and the hydrophilic porous layer presents a contact angle with water of at most 70.degree..
Dependencies are inferred from the claim text.