Waste-free method of making window treatments
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United States of America Patent
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Jun 18, 2013
Grant Date -
Mar 18, 2010
app pub date -
Sep 17, 2008
filing date -
Sep 17, 2008
priority date (Note) -
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Abstract
An apparatus and method are disclosed for forming cellular or non-cellular window shades directly from raw stock to the final desired window shade color, height and width to fit a particular window size, with essentially no wasted material. The shade is fabricated from a bonded array of a predetermined number of stacked, identically shaped and sized, elements or preforms of uniform length corresponding to one of the height or width dimensions of the desired window covering. The number of preforms is selected so that the length of the fully expanded array will correspond with the other of the height or width dimensions of the window covering. The raw stock is in the form of a continuously fed narrow strip of uncolored fabric to which the necessary coloring, folding, cutting-to-length, stacking and bonding steps are applied within the disclosed apparatus.
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