USH1340HExpiredUtility

Disposable sanitary garment

38
Individually held — no corporate assignee on recordPriority: Dec 19, 1989Filed: Mar 20, 1992Granted: Jul 5, 1994
Est. expiryDec 19, 2009(expired)· nominal 20-yr term from priority
Inventors:Jerry J. YetterCharles D. Broaddus
A61F 2013/53481A61F 13/15252A61F 2013/51147A61F 13/51401A61F 13/51121A61F 2013/51165A61F 13/531A61F 2013/530043A61F 2013/51035
38
PatentIndex Score
34
Cited by
13
References
15
Claims

Abstract

Disposable sanitary garments comprise topsheet and/or backsheet materials prepared from polymers based on glycolic acid, lactic acid, and mixtures thereof. Disposable sanitary articles having absorbent cores comprising oxidized cellulose are also provided. Diapers, sanitary napkins, pantiliners, and the like, prepared from the foregoing materials are disclosed.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A disposable absorbent structure, comprising a water-permeable topsheet, an absorbent core, and a water-impermeable backsheet, said structure being characterized in that said backsheet comprises a flexible film comprising a lactic acid-based or glycolic acid-based polyester. 
     
     
       2. A structure according to claim 1 wherein the polyester backsheet comprises a co-polyester based on glycolic acid and lactic acid. 
     
     
       3. A structure according to claim 1, in the form of a disposable diaper, sanitary napkin or pantiliner. 
     
     
       4. A structure according to claim 1 wherein both the topsheet and the backsheet comprise a lactic acid-based or glycolic acid-based polyester, or co-polyester thereof. 
     
     
       5. A structure according to claim 4 in the form of a disposable diaper, sanitary napkin or pantiliner. 
     
     
       6. A structure according to claim 4 wherein the absorbent core comprises oxidized cellulose. 
     
     
       7. A structure according to claim 6 in the form of a disposable diaper, sanitary napkin or pantiliner. 
     
     
       8. A disposable absorbent structure, comprising a water-permeable topsheet, an absorbent core and a water-impermeable backsheet, said structure being characterized in that said topsheet comprises a flexible porous sheet or woven or nonwoven web of polymer comprising a lactic acid-based or glycolic acid-based polyester. 
     
     
       9. A structure according to claim 8 wherein the polyester topsheet comprises a co-polyester based on lactic acid and glycolic acid. 
     
     
       10. A structure according to claim 8 wherein the topsheet is in the form of a nonwoven web. 
     
     
       11. A structure according to claim 8 in the form of a disposable diaper, sanitary napkin or pantiliner. 
     
     
       12. A disposable absorbent structure comprising a water-permeable topsheet, a water-impermeable backsheet, and an absorbent core, said structure being characterized in that said absorbent core comprises oxidized cellulose. 
     
     
       13. A structure according to claim 12 wherein the oxidized cellulose comprises at least 16% carboxyl groups. 
     
     
       14. A structure according to claim 12 in the form of a disposable diaper, sanitary napkin or pantiliner. 
     
     
       15. A structure according to claim 12 wherein the oxidized cellulose absorbent core additionally contains an absorbent gelling material.

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