Process for manufacture of superabsorbent-coated yarn

Details Process for manufacture of superabsorbent-coated yarn Process for manufacture of superabsorbent-coated yarn

D - Textiles, Paper

06

M

D06M 23/00 (2006.01) C03C 25/26 (2006.01) C03C 25/28 (2006.01) D02G 3/44 (2006.01) D06M 15/263 (2006.01) D06M 15/285 (2006.01) H01B 7/28 (2006.01)

Patent

CA 2301001

A process for the manufacture of a yarn provided with a superabsorbent material having a swelling value of at least 60 and having hydrophilic properties which is capable of absorbing and retaining quantities of water, characterized in that an aqueous solution comprising a water-soluble pre-superabsorbent material is applied onto the yarn, after which the yarn is dried and heated in order to cross-link or to polymerize the water-soluble pre-superabsorbent material to the superabsorbent material. The superabsorbent provides water blocking capabiltiy to the yarn, so that it is suitable for use as a strength member in water tight optical communication cables.

L'invention concerne un procédé de fabrication de fil enduit de matériau superabsorbant ayant une valeur de gonflement au moins égale à 60 et des propriétés hydrophiles qui lui permettent d'absorber et de retenir certaines quantités d'eau. Le procédé consiste à appliquer au fil une solution aqueuse renfermant un matériau hydrosoluble pré-superabsorbant, puis à sécher et à réchauffer le fil de manière à réticuler et à polymériser le matériau hydrosoluble pré-superabsorbant pour obtenir le matériau superabsorbant recherché. Ce matériau confère une étanchéité au fil, qui se prête ainsi à une utilisation comme membre de résistance dans les câbles de communication optique étanches.

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