Absorbent material

Abstract

Disclosed is an absorbent material which is used as ink pads of ink-jet and bubble-jet printers, various building materials and materials for civil engineering work, said absorbent material comprising a non-woven fabric containing water-absorptive fibers, wherein a water absorption percentage is not less than 400% by weight and a change in volume is less than 10% in a state where water is absorbed in the amount of not less than 400% by weight.

1 . An absorbent material comprising a non-woven fabric containing water-absorptive fibers, wherein a water absorption percentage is not less than 400% by weight and a change in volume is less than 10% in a state where water is absorbed in an amount of not less than 400% by weight.  
     
     
         2 . The absorbent material according to  claim 1 , which contains 2 to 20% by weight of highly water-absorptive fibers.  
     
     
         3 . The absorbent material according to  claim 2 , wherein the highly water-absorptive fibers are highly water-absorptive fibers of crosslinked sodium polyacrylate.  
     
     
         4 . The absorbent material according to any one of  claims 1  to  3 , wherein a density is within a range from 0.03 to 0.28 g/cm 3 .  
     
     
         5 . The absorbent material according to any one of  claims 1  to  4 , wherein an oily agent is coated on the fibers constituting the absorbent material.  
     
     
         6 . The absorbent material according to any one of  claims 1  to  5 , wherein a water absorption rate is not more than 5 seconds.  
     
     
         7 . The absorbent material according to any one of  claims 1  to  6 , which contains not less than 50% by weight of flame-retardant fibers.