A - Human Necessities – 61 – L
Patent
A - Human Necessities
61
L
18/586
A61L 15/00 (2006.01) A61L 15/28 (2006.01) D01F 9/04 (2006.01)
Patent
CA 1192364
ABSTRACT OF THE DISCLOSURE A process for the production of dried alginate fibre material which includes the operations of spinning an aqueous solution of a soluble alginate salt into a spin bath containing an aqueous solution of a salt, for example a calcium salt, to provide wet spun fibres of insoluble alginate, forming a sheet of the wet spun insoluble undried alginate fibres in which the individual fibres are separated and disposed in generally parallel relation- ship, feeding forwards and laying the sheet of undried fibres onto a moving conveyor device which is travelling at a slower speed than said sheet in the feed direction whereby the fibres become overlaid in crossing-over intersecting relationship to form a web, followed by further processing in which said sheet or web of intersecting overlaid fibres is subjected to a dewatering drying operation, the improvement consisting in incorporating into the process at least one controlled treatment step which is effective to eliminate or reduce bonding of the overlaid fibres at their points of contact or intersection and to ensure thereby that the dried non-woven web constituting the dried alginate fibre material which is the end product of said process has minimal degree of bonding between the fibres.
409567
Borden Ladner Gervais Llp
Tong David P.
LandOfFree
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