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Multiple layer absorbent cores for absorbent articles    
United States Patent5134007   
Link to this pagehttp://www.wikipatents.com/5134007.html
Inventor(s)Reising; George S. (Batavia, OH); Bergman; Bruce H. (Mason, OH); Clear; Sandra H. (Deerfield Township, Warren County, OH); Guinn; Susan E. (Colerain Township, Hamilton County, OH); Gomez-Santiago; Rolando (Cincinnati, OH)
AbstractAbsorbent articles such as disposable diapers, incontinent pads, sanitary napkins and the like that have multiple layer absorbent cores that are suitable for acquiring and containing liquids in an especially effective and efficient manner. The absorbent core comprises multiple layers including a first layer comprising hydrophilic fibrous material and having an acquisition zone of a relatively lower average density than the other portions of the first layer so that it quickly acquires discharged liquids; a liquid handling layer comprising a resilient material that is moisture insensitive so as to rapidly acquire liquid into itself through the acquisition zone and distribute the liquid throughout the liquid handling layer to a storage layer and the first layer; and a storage layer comprising a combination of fibrous material and discrete particles of absorbent gelling material that contains and stores the liquids deposited onto the absorbent core and allows the liquid handling layer to be "drained" of the liquids it has acquired so that the liquid handling layer may have sufficient capacity to acquire and distribute subsequent loadings of liquids.



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Drawing from US Patent 5134007
Multiple layer absorbent cores for absorbent articles - US Patent 5134007 Drawing
Multiple layer absorbent cores for absorbent articles
Inventor     Reising; George S. (Batavia, OH); Bergman; Bruce H. (Mason, OH); Clear; Sandra H. (Deerfield Township, Warren County, OH); Guinn; Susan E. (Colerain Township, Hamilton County, OH); Gomez-Santiago; Rolando (Cincinnati, OH)
Owner/Assignee     The Procter & Gamble Company (Cincinnati, OH)
Patent assignment
All assignments
Publication Date     July 28, 1992
Application Number     07/697,917
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     May 1, 1991
US Classification     428/78 428/80 428/134 428/138 428/218 604/378 604/385.19
Int'l Classification     A61F 013/46 B32B 003/10 B32B 005/26 B32B 007/00
Examiner     Cannon; James C.
Assistant Examiner    
Attorney/Law Firm     Bamber; Jeffrey V. Miller; Steven W. , Witte; Richard C. ,
Address
Parent Case     This is a continuation of application Ser. No. 07/574,173 filed on Aug. 28, 1990, now abandoned, which was a divisional of application Ser. No. 07/198,032 filed May 24, 1988, which issued as U.S. Pat. No. 4,988,344 on Jan. 29, 1991.
Priority Data    
USPTO Field of Search     428/78 428/134 428/138 428/218 428/283 428/286 428/287 428/80 604/385.1 604/378
Patent Tags     multiple layer absorbent cores absorbent articles
   
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Market Size
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$5B - $10B
$2B - $5B
$500M - $2B
$100M - $500M
$10M - $100M
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Market Share
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25% - 49.99%
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