Pressure-sensitive adhesive closure for disposable diaper

Details Pressure-sensitive adhesive closure for disposable diaper Pressure-sensitive adhesive closure for disposable diaper

B - Operations, Transporting

32

B

154/119, 117/31,

B32B 7/14 (2006.01) A61F 13/58 (2006.01) A61L 15/58 (2006.01) B32B 3/06 (2006.01) C09J 7/02 (2006.01) C09J 153/02 (2006.01)

Patent

CA 1303472

41626 CAN 9A Pressure-Sensitive Adhesive Closure for Disposable Diaper Abstract A pressure-sensitive adhesive closure for a disposable diaper can exhibit high peel resistance both at low and high speeds while its peelability at high speeds is not excessively shocky when it employs a pressure- sensitive adhesive of a certain rheology and it has, covering the fastening area, a polyolefin layer having microtopographical features as in Figs. 1-6 of the drawing. As seen in Figs. 1-6, suitable microtopographical features are provided by a large number of closely spaced asperities at least two micrometers in height that have a jagged appearance at 500x. A pressure- sensitive adhesive of suitable rheology can be provided by a blend of an AB block copolymer, such as a copolymer of styrene and either isoprene or butadiene, and tackifying resin, preferably a mixture of liquid and solid tackifying resins.

581717

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