Water absorption bag

D - Textiles – Paper – 21 – H

Patent

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Details

D21H 11/14 (2006.01) A61F 13/15 (2006.01) B32B 29/02 (2006.01) D21H 21/22 (2006.01) E02B 3/10 (2006.01)

Patent

CA 2066694

24 Abstract The water absorption bag (18) has an absorption pad (20) in which a superabsorber is homogeneously sprinkled into a pulp of cellulose fibres, and an absorption core (21) formed from at least one layer is made with a tear- resistant, liquid-permeable outer shell (22). The cellulose fibres, preferably recycled fibres, are mixed with fibres of thermoplastic to form a homogeneous pulp in a weight ratio of at least 4:1, which pulp is shaped before or after three-dimensional homogeneous sprinkling of the superabsorber and is subjected to a heat treatment partially melting the plastic to bind the fibres at many points. The cellulose and plastic fibres joined like a net thus have an increased but resilient dimensional stability. The outer shell (22) may be designed to be openable. The absorption pad (20) and/or the outer shell (22) preferably comprise integrated means for accommodating an insert (42) increasing the specific weight separately from the pulp with the superabsorber. The outer shell advantageously consists of natural fibres, preferably of sisal or jute fibres. The water absorption bags (18) serve to protect against effects of water during fire, flooding, pipe leaks and the like. (Figure 6)

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