Method and apparatus for producing discretely striped multi-property foam
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United States of America Patent
Stats
-
Jul 27, 2004
Grant Date -
Dec 12, 2002
app pub date -
Jun 6, 2001
filing date -
Jun 6, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to methods and apparatus for producing a discretely striped, multi-property foam and the products and articles produced thereby. The invention provides a pre-foam stream at a first pressure and intermittently injects at least one additive into the pre-foam stream at a pressure higher than the first pressure, providing a laminar flow pre-foam stream with alternating segments having different properties. The pre-foam stream is poured onto a surface and cures into a discretely striped foam product which may be used for many purposes such as but not limited to padding, clothing, toys, or bedding.
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Family
International Classification(s)
Cited Art Landscape
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