Polyester film for decorative sheet
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United States of America Patent
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May 22, 2001
Grant Date -
N/A
app pub date -
Jan 19, 1999
filing date -
Jan 20, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention relates to a polyester film for a decorative sheet wherein said sheet comprises a picture-printed layer (B) and said polyester film (A) laminated on a substrate, said polyester film containing a color pigment in an amount of 0.1 to 30 weight % based on the weight of said polyester (A), and said polyester film having a color tone which satisfies the color difference .DELTA.E* between said polyester film (A) and the picture-printed layer (B), which is represented by the following formula (1), of not more than 50. .DELTA.E*={(L*A-L*B).sup.2 +(a*A-a*B).sup.2 +(b*A-b*B).sup.2 }.sup.1/2 (1) wherein L*A, a*A and b*A represent color tone values of the polyester film (A) in CIELAB color determination system; and L*B, a*B and b*B represent color tone values of the picture-printed layer (B) in CIELAB color determination system.
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