Weatherstrip product formed by sequential extrusion of cellular and non-cellular plastic resins
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United States of America Patent
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Jan 2, 2001
Grant Date -
N/A
app pub date -
Oct 29, 1997
filing date -
Oct 29, 1997
priority date (Note) -
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Abstract
An extrusion product or profile is formed by extrusion of a cellular compound to form a base and then subsequent extrusion of a non-cellular compound to form an attached flexible strip. The final product or profile is used as a garage door weatherstrip in which the cellular base is mounted against the door jamb and the strip of flexible non-cellular material extends out from the cellular base to prevent the flow of air through openings between doors and adjacent jambs or frames. The process for forming such a product involves sequential extrusion of the two portions of the product. First, a cellular base is extruded through a die and vacuum sizer and allowed to cool. Next, a saddle die is used to apply the flexible non-cellular strip to a portion of the cellular base.
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