US 12,109,797 B2
Liquid-absorbing barrier bag with adhered swelling absorbent
Mark D. Shaw, Ponte Vedra Beach, FL (US); and Paul Sander, Jacksonville, FL (US)
Assigned to ULTRATECH INTERNATIONAL, INC., Jacksonville, FL (US)
Filed by Ultratech International, Inc., Jacksonville, FL (US)
Filed on Mar. 24, 2023, as Appl. No. 18/125,925.
Claims priority of provisional application 63/323,708, filed on Mar. 25, 2022.
Prior Publication US 2023/0302768 A1, Sep. 28, 2023
Int. Cl. B32B 7/12 (2006.01); B32B 3/26 (2006.01); B32B 5/02 (2006.01); B65D 81/26 (2006.01)
CPC B32B 7/12 (2013.01) [B65D 81/264 (2013.01); B32B 3/266 (2013.01); B32B 5/024 (2013.01); B32B 2307/7166 (2013.01); B32B 2307/726 (2013.01); B32B 2307/7265 (2013.01); B32B 2439/06 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A liquid-absorbing barrier bag comprising:
a liquid-permeable envelope having an inner surface;
an adhesive disposed on the inner surface of the liquid-permeable envelope; and
a liquid-absorbing material adhered to the inner surface of the liquid-permeable envelope by the adhesive, the liquid-absorbing material characterized in that it expands upon contact with liquid;
wherein the adhesive is water-soluble;
whereby upon expansion of the liquid-absorbing material, passage of liquid through the liquid-absorbing barrier bag is precluded.
 
12. A liquid-absorbing barrier bag comprising:
a liquid-permeable envelope having an inner surface;
an adhesive disposed on the inner surface of the liquid-permeable envelope; and
a liquid-absorbing material adhered to the inner surface of the liquid-permeable envelope by the adhesive, the liquid-absorbing material characterized in that it expands upon contact with liquid;
wherein the liquid-absorbing material separates from the inner surface of the liquid-permeable envelope upon absorption of liquid;
whereby upon expansion of the liquid-absorbing material, passage of liquid through the liquid-absorbing barrier bag is precluded.
 
13. A liquid-absorbing barrier bag comprising:
a liquid-permeable envelope having an inner surface;
an adhesive disposed on the inner surface of the liquid-permeable envelope; and
a liquid-absorbing material in powdered or granular form adhered to the inner surface of the liquid-permeable envelope by the adhesive, wherein the liquid-absorbing material is characterized in that it expands upon contact with liquid to form a gel;
wherein the liquid-absorbing material is characterized in that it absorbs from 50 to 1000 times its weight in liquid;
wherein the adhesive is characterized in that it releases the liquid-absorbing material from the inner surface of the liquid-permeable envelope upon absorption of liquid; and
whereby upon expansion of the liquid-absorbing material, passage of liquid through the liquid-absorbing barrier bag is precluded.