Lay flat book sheets
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 11, 2014
Grant Date -
Sep 11, 2008
app pub date -
Mar 5, 2008
filing date -
Mar 5, 2007
priority date (Note) -
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Abstract
A sheet stock having a flexible hinge area is described. The sheet stock includes a substrate having an opening and gap stiffener, and a flexible film covering the opening and defining a flexible hinge area in the region of the opening and gap stiffener covered by the film. Methods for producing sheet stock having a flexible hinge area are also described. The sheet stock may be used in printing, binding, and in other applications.
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