Water Absorbing and Retention Bag

Abstract

An improved water absorbing and retention bag has opposing bands about an outer bag. An inner bag has a supply of super absorbent polymer retained therein. The bands can provide loops from opposing ends of the bag while encircling the bag.

Description

CLAIM OF PRIORITY[0001]This application claims the benefit of U.S. Provisional Patent Application Nos. 61 / 174,523 filed May 1, 2009 as well as 61 / 174,232 filed Apr. 30, 2009. Furthermore, this application is a continuation in part of U.S. patent application Ser. No. 11 / 549,333 filed Oct. 13, 2006.FIELD OF THE INVENTION[0002]The present invention relates to water absorbing and retention bags which can be utilized with, or in place of, sand bags for such uses as flood control, amongst others.DESCRIPTION OF RELATED ART[0003]U.S. Pat. No. such as 6,715,960 and probably others in Class 405 / 114 describe super absorbent polymers (SAPs) utilized in a bag for flood control. However, the applicant has found that when testing products available on the market, the SAPs in the bags normally have a molecular weight less than one (i.e., they float), and they have a tendency to have extremely poor desorption characteristics.[0004]Floodbloc is a company selling a product with a bag available on the ...

AI Technical Summary

Benefits of technology

[0007]It is another object of the present invention to provide bag materials for at least some embodiments which at least assists in providing improved desorption characteristics.

[0011]It is yet another object of at least some embodiments of the present invention to provide a bag having a “firm pillow” inflation upon taking on water which facilitates stacking like sand bags preferably at about 40 pounds of weight while minimizing leakage around bags. See graph of FIG. 5.

[0012]It is still another object of at least some embodiments of the present invention to invert at least the inner bag, if not both an inner and an outer bag after serging at least one of a side and an end to assist in potentially preserving the stitched portions.

[0013]Accordingly, in a preferred embodiment of the present invention, a bag is preferably created with a first or inner bag configured to retain a preferred SAP therein. The SAP utilized preferably provides an absorption ratio of SAP to water of about 1 / 500. The SAP may be pelletized as one or more pellets and provided in a known amount to achieve a desired inflation of the inner bag with a desired weight. 31.5 grams of SAP as provided either as a single pellet or as a powder have been found to provide a “firm pillow” upon taking one water which sufficiently plugs leaks and provides stackability similar to sand bags.

Problems solved by technology

However, the applicant has found that when testing products available on the market, the SAPs in the bags normally have a molecular weight less than one (i.e., they float), and they have a tendency to have extremely poor desorption characteristics.

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