Heat-sealed die cut binder
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United States of America Patent
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-
Jun 4, 1991
Grant Date -
N/A
app pub date -
May 24, 1989
filing date -
May 24, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A binder is provided having a cover featuring a three-dimensional design produced by depressing plastic cover sheets into an opening in an underlying cover panel. The cover sheets are heat sealed together around the perimeter of the cover panel and in the regional of the depression. A plurality of such openings may be provided, all so shaped and positioned as to avoid substantially impairing the structural integrity of the cover.
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