Filter material for removing chlorine from cold water in...

Details Filter material for removing chlorine from cold water in... Filter material for removing chlorine from cold water in...

B - Operations, Transporting

01

D

B01D 39/08 (2006.01) D21H 17/28 (2006.01) D21H 17/32 (2006.01) D21H 17/66 (2006.01)

Patent

CA 2209564

A filter material for removing chlorine from cold water used in preparing a human- consumable beverage having at least one layer of a mat of laid fibers (2) of cellulosic fibers (2) and synthetic textile fibers (2) and mixtures thereof. A synthetic hydrophilic, food-grade latex binder (3) deposited onto the fibers (2) within the mat in an amount sufficient to so bind the fibers (2) together within the mat that during a filtration of cold water through the mat no substantial amount of fibers (2) is displaced therefrom and in an amount insufficient to substantially reduce a gravity flow rate of cold water through the mat to less than about 0.3 liter per minute per 100 square centimeters of the mat. A water-insoluble chlorine adsorbent or absorbent solid powder (5) disposed on the binder (3) such that no more than 65 % of the total outside surface area of the powder (5) is substantially contacted by the binder (3).

L'invention porte sur un matériau filtrant permettant d'éliminer le chlore de l'eau froide utilisée pour la préparation de boissons destinées à la consommation humaine. Ledit matériau comporte au moins une couche faite d'une natte de fibres couchées (2), de fibres cellulosiques (2) et de fibres synthétiques (2) et de leur mélange. L'invention porte également sur un liant alimentaire hydrophile de latex synthétique (3) qu'on dépose sur les fibres de la natte en quantité suffisante pour les (2) lier et éviter que pendant le filtrage de l'eau froide à travers le matériau, elles (2) ne s'en détachent massivement. Elles se trouvent donc en quantité insuffisante pour réduire sensiblement l'écoulement par gravité qui ne descend pas en dessous de 0,3 l/min/100 cm<2> de natte. L'invention porte de plus sur un adsorbant non hydrosoluble du chlore ou une poudre adsorbante à l'état solide (5) déposés sur le liant (3), de manière à ce que moins de 65 % de la surface extérieure totale de la poudre (5) soit sensiblement en contact avec le liant (3).

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