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AssigneeAvery Dennison Corporation
InventorsRichard A. Huskey, Eng-Pi Chang, Carol A. Caldwell, Gary A. Avalon, Yung-Hsiang Huang, Dave A. Soerens, Ruth A. Lachapell
Estimating the term…
A refastenable diaper is provided with a securing zone on the diaper outer cover of a peak strength of less than 2750 grams/inch. A refastenable adhesive taping system for the diaper includes an adhesive fastening tape comprising a flexible backing and a layer of pressure-sensitive adhesive permanently combined to said flexible backing and adapted to be applied to and released from the securing zone to fasten and open the diaper. The adhesive exhibits a 180.degree. peel adhesion of the tape to the securing zone that is less than the peak strength of the securing zone. The adhesive is selected to be within a specified rheological window, that is, have a maximum tan delta, or (tan delta).sub.max, of from 1.5 to 2.5 at 20.degree. C., reached at a frequency, or (w).sub.max, of greater than 500 rad/sec.
A refastenable, adhesive taping system, comprising:
In a refastenable diaper, a diaper outer cover, a securing zone on the diaper outer cover of a peak strength of less than 2750 grams/inch, a refastenable adhesive taping system including an adhesive fastening tape having a factory bond section and a user bond section, said tape being fixed to said diaper at said factory bond section, said tape comprising a flexible backing and a layer of pressure-sensitive adhesive permanently combined to said flexible backing and adapted to be applied to and released from said securing zone to fasten and open the diaper at said user bond section of the tape, said adhesive exhibiting a 180.degree. peel adhesion of the tape to the securing zone, measured at a peel speed of 2000 to 25000 mm/minute, that is less than said peak strength of the securing zone, said adhesive being selected to have a maximum tan delta of from 1.5 to 2.5 at 20.degree. C., reached at a frequency greater than 500 rad/sec.
Method for manufacturing a diaper tape fastener for a diaper having a securing zone on its outer cover of a peak strength of less than 2750 grams/inch, comprising the steps of combining a tape backing and a fastening adhesive to provide an adhesive fastening tab having a 180.degree. peel adhesion to the securing zone that is less than the peak strength of the securing zone, measured at a peel speed of 2000 to 25000 mm/minute, and joining said fastening tab to said diaper in position for deployment for adherence and release of said tab to said securing zone, including in said combining step the step of selecting said adhesive to have a maximum tan delta of from 1.5 to 2.5 at 20.degree. C., reached at a frequency greater than 500 rad/sec.
Method for manufacturing a diaper tape fastener for a diaper having a securing zone on its outer cover of a peak strength of less than 1500 grams/inch, comprising the steps of combining a tape backing and a fastening adhesive to provide an adhesive fastening tab having a 180.degree. peel adhesion to the securing zone, measured at a peel speed of 2000 to 25000 mm/minute, that is less than the peak strength of the securing zone, and joining said fastening tab to said diaper in position for deployment for adherence and release of said tab to said securing zone, including in said combining step the step of selecting said adhesive to have a maximum tan delta of from 1.5 to 2.5 at 20.degree. C., reached at a frequency greater than 500 rad/sec.
Dependencies are inferred from the claim text.