Composition for hydrogel sheet, hydrogel sheet manufactured therefrom, and method for manufacturing same

Abstract

A composition for a hydrogel sheet may include a cellulose ether, a gelling agent, and a gelling promoter, where an aqueous 2 wt % solution of the cellulose either may have a viscosity of 3 cps to 300 cps, as measured under a condition of 20 ° C. using an Ubbelohde viscometer. The gelling agent may include one or more selected from the group consisting of carrageenan, locust bean gum, mannose, and water chestnut flour.

1 . (canceled) 
     
     
         2 . (canceled) 
     
     
         3 . A composition for a hydrogel sheet comprising:
 a cellulose ether;   a gelling agent; and   a gelling promoter,   wherein an aqueous 2 wt % cellulose ether solution has a viscosity of 3 cps to 300 cps, as measured under a condition of 20° C. using an Ubbelohde viscometer.   
     
     
         4 . The composition of  claim 3 , wherein the gelling agent comprises one or more selected from the group consisting of carrageenan, locust bean gum, mannose, and water chestnut flour. 
     
     
         5 . The composition of  claim 3 , wherein an aqueous 5 wt % hydrogel sheet composition solution has a viscosity of 500 cps to 5,000 cps, as measured under conditions of 60° C. and 15 to 60 rpm using a Brookfield viscometer. 
     
     
         6 - 15 . (canceled) 
     
     
         16 . The composition of  claim 3 , wherein the cellulose ether comprises one or more selected from the group consisting of methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, and carboxymethyl cellulose. 
     
     
         17 . The composition of  claim 3 , wherein the gelling promoter comprises one or more metal salts selected from the group consisting of magnesium chloride, potassium chloride, calcium chloride, and sodium chloride. 
     
     
         18 . The composition of  claim 3 , wherein a repeat unit of the gelling agent and the gelling promoter are included at molar ratios of 0.01 to 12.00 and 0.01 to 2.00, respectively, per a glucose unit of the cellulose ether. 
     
     
         19 . A hydrogel sheet prepared from the composition for a hydrogel sheet according to  claim 3 . 
     
     
         20 . The hydrogel sheet of  claim 19 , wherein the hydrogel sheet has a porosity of 0.01% to 5%. 
     
     
         21 . The hydrogel sheet of  claim 19 , wherein the hydrogel sheet is used for a cosmetic mask pack. 
     
     
         22 . The hydrogel sheet of  claim 19 , wherein the hydrogel sheet is used for a wound dressing.