Device for sealing two plies of film together, particularly for enclosing a foamable composition in a flexible container
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United States of America Patent
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Apr 22, 2003
Grant Date -
Jul 18, 2002
app pub date -
Jan 12, 2001
filing date -
Jan 12, 2001
priority date (Note) -
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Abstract
A device for sealing two plies of plastic film together generally includes an electrically conductive heating element and a rotatable support cylinder having an outer, circumferential surface, the cylinder being positioned in abutting relationship with the heating element and capable of rotating against the heating element, which is in fixed position, along a predetermined contact arc such that less than a complete circumference of the outer surface of the cylinder is in contact with the heating element.
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