Improved process to make a wet-laid absorbent structure

Details Improved process to make a wet-laid absorbent structure Improved process to make a wet-laid absorbent structure

D - Textiles, Paper

21

H

D21H 23/14 (2006.01) D21H 21/22 (2006.01) D21H 13/06 (2006.01) D21H 13/24 (2006.01) D21H 15/10 (2006.01)

Patent

CA 2264348

In accordance with the invention there is provided a process to form a non- woven, wet-laid, superabsorbent, polymer particle -impregnated fibrous structure on a commercial scale wet-forming machine having a head box, a forming section and a drying section, the process comprising adding SAP to water under and within 5 seconds of the SAP water contact, providing agitation of at least 4000 Reynolds units thereby dispersiing ungelled SAP particles throughout the fiber furnish, delivering the furnish to a moving foraminous support, forming a wet laid web containing wetted SAP particles, draining of water from the moving wet web, and conveying the web to the dryer section, wherein the maximum elapsed time from the point where SAP is mixed with water to the time the web passes into the dryer section is less than 45 seconds.

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