Laminated fabric having cross-directional elasticity and method for producing same
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United States of America Patent
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Aug 4, 1998
Grant Date -
N/A
app pub date -
Oct 11, 1996
filing date -
Oct 11, 1996
priority date (Note) -
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status (Latency Note)
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Abstract
Transversely stretchable elastic laminated fabric with cloth-like facings was made by a two-step process. In the first step an inelastic laminate was made by continuously extruding an elastomer sheet between two plies of a fibrous sheet and joining the plies by applying pressure on them between a closed gap niproll assembly. Two longitudinal slits were made into the laminate. Then the rolls of inelastic laminate so made were taken to an oven and the laminate was unwound and pulled through the oven at an elevated temperature, while tension on the web was increased until the slits necked. The necked laminate was wound up on a takeup roll. When samples were unwound, surprisingly they did not grow in width, and they showed good CD-elasticity (elongation and springback). Breathability of the laminate was superior to the laminate formed using an open niproll assembly gap.
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Cited Art Landscape
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