Stretch-activated elastic composite
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United States of America Patent
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Nov 6, 2001
Grant Date -
N/A
app pub date -
Jun 21, 1996
filing date -
Jan 18, 1994
priority date (Note) -
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Abstract
A stretch-activated elastic composite includes a non-woven fabric having a potential elongatability of higher than 100% in a predetermined direction, and an elastically recoverable, elastic sheet. The elastic sheet in its unstretched state is partially bonded to the non-woven fabric in its unelongated state. The elastic composite exhibits, per unit width of 5 cm, (1) a stress of lower than 1000 g at 30% stretch, (2) a stress of higher than 400 g at 100% stretch, (3) a breaking point of higher than 400 g and (4) an elastic limit of higher than 200%. The elastic composite after being stretched at a rate of lower than 200% exhibits, per unit width of 5 cm, (1) a stress of lower than 500 g at 30% stretch and (2) a stress of higher than 100 g at 100% stretch. The elastic composite after three repeated cycles of 150% stretching and relaxing exhibits an elastic recovery rate of higher than 60%. The elastic composite of the present invention provides excellent performance in elastic recovery, is soft to the touch, and is best utilized in elasticizing an article portion which is brought into direct contact with human skin.
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