Stretch structure for absorbent article, and underpants-type disposable diaper using same
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United States of America Patent
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Nov 24, 2020
Grant Date -
Feb 1, 2018
app pub date -
Jan 29, 2016
filing date -
Jan 30, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
A stretchable structure of an absorbent article includes a stretchable region and a non-stretchable region. A laminate of a first sheet layer, second sheet layer, and elastic film between the first and second sheet layers extends over the stretchable and non-stretchable regions. The first and second sheet layers are bonded to each other at a large number of dot-like joints via through holes formed in the elastic film stretched along the surfaces of the first and second sheet layers in a stretchable direction. The dot-like joints are arrayed at intervals in the stretchable direction and a direction perpendicular to the stretchable direction. An end of the stretchable region adjacent to the non-stretchable region is a buffer stretchable section. The area rate of dot-like joints in the buffer stretchable section is larger than the area rate of dot-like joints in the main section not including the buffer stretchable section.
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