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 Disposable training pant having improved stretchable side panels

Details
Inventors: Nishikawa, Masaharu; Rollag, Keith W.; Sageser, David M.; Yamada, Jiro;
Assignee: The Procter & Gamble Company (Cincinnati, OH)
Primary Examiner: Clarke; Robert A. H.
Assistant Examiner:
Attorney, Agent or Firm: Johnson; Kevin C., Miller; Steven W., Rasser; Jacobus C.

The present invention provides a disposable training pant having an improved elasticized side panel which gives improved fit and comfort. The disposable diaper has an absorbent core chassis (30) and a pair of elasticized side panels (50) connected to the longitudinal sides of the chassis, where each side panel is formed of two elasticized laminate members (10), joined by a side seam along a non-elasticized outboard edge (52) of each member.

DETAILED DESCRIPTION Though the problem may be solved by various means, none are completely satisfactory.
For example, additional materials could be added to or between the front and the back edge portions of the side panels to make the seam stronger and to reduce damage to the elastic layer.
However, the inventors have found that the problem can be solved by modifying the method for making the elasticized laminate used to form the elasticized side panels.
During the making of the elasticized laminate, discrete and spaced apart regions of the laminate which is fed between the opposed pressure applicators are subjected to no or reduced mechanical stretching.
After the laminate has been mechanically stretched, it is cut along its width (in the direction of feeding) in the middle of the regions where no or reduced mechanical stretching occurred (hereinafter referred to as "non-stretched region").
The widths of laminate are then cut to the appropriate lengths for front and back elasticized members.
The non-stretched region is used as the respective outboard edge portions of the front and back elasticized members which are then joined to form the side seam.
Thus, the present invention provides a side seam that has substantially improved strength and tear resistance, and provides a training pant with elasticized side panels having improved side seam integrity.



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