CLOVERDALE, CA, December 13, 2018-

“Absorbent cores having material free areas”; US 10,130,527 (Nov. 20, 2018); filed: Aug. 19, 2014. Assignee: The Procter & Gamble Company (Cincinnati, OH). Inventor(s): Andrea Peri, Aniruddha Chatterjee, Peter Dziezok, Bruno Johannes Ehrnsperger, Juliane Kamphus, Marion Lutsche.

Disclosed is an absorbent core with one or more areas substantially free of absorbent material. When the absorbent material swells the core wrap forms one or more channels along the areas substantially free of absorbent material. The channels promote fluid distribution. The inventors have found that for absorbent cores comprising such channels, it can be advantageous to use these SAP having a T20 of below 240 s to maintain sufficient speed of absorption beyond first gush. The superabsorbent polymer particles have a time to reach an uptake of 20 g/g (T20) of less than 240 s as measured according to the K(t) test method.

Nonwovens Markets subscribers - click here to read the full article.

Not a subscriber?

Try Nonwovens Markets free!