Flexible multilayer film
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United States of America Patent
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Feb 25, 2003
Grant Date -
N/A
app pub date -
Apr 4, 2001
filing date -
Apr 10, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multilayer film is described which has at least one first layer (1) of thermoplastic polyurethane, at least one second layer (2) of thermoplastic elastomer, and optionally a third layer (3) of thermoplastic polyurethane. The ratio of the water vapor permeability level of the first layer (1) to the water vapor permeability level of the second layer (2), of the multilayer film is at least two. When the optional third layer (3) is present in the multilayer film, the first and third layers enclose the second layer. Also described are filled articles (e.g., water beds and hot/cold pads), which are fabricated from the multilayer films of the present invention.
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