Method of making paper from water insoluble alginate fibers and the paper produced
AssigneeCarreras Rothmans Limited
InventorsRonald Ernest Prouse, Anthony Alfred West, Derek Anthony King, Roger Poulson
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Abstract
A method of manufacturing calcium alginate sheets, without the use of an adhesive binder, by use of a Fourdrinier paper making machine is disclosed. Alginate material in fibrous form is obtained by squirting an aqueous solution of water-soluble alginate via a spinneret into a bath of an inorganic salt, whose cation will react with the alginate to produce a water-insoluble alginate. This fibrous alginate material is then fed into a Fourdrinier machine and formed into a sheet, and the pH value of the fibrous alginate slurry at the screen wire of the machine is at or below 7.0.
Claims18
A method of manufacturing alginate paper without the use or formation of an additional adhesive binder comprising the steps of forming a papermaking stock of raw fibrous water insoluble alginate material, said fibrous water insoluble alginate material being free of surface sodium alginate and being the only fibrous material used in said method, presenting said stock to the screen of the web-forming unit of a paper making machine arranged to form said paper and forming said paper on said machine, the pH value of said stock presented to said screen being at or below pH 7.0.
An alginate paper consisting essentially of raw water insoluble alginate fibres which are held together to form the sheet material without the use or formation of an additional adhesive binder.
Dependencies are inferred from the claim text.