Anti-chipping sheet
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United States of America Patent
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Feb 24, 2015
Grant Date -
Jan 13, 2011
app pub date -
Jan 31, 2008
filing date -
Jan 31, 2008
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Abstract
An anti-chipping sheet includes at least a substrate layer and a pressure-sensitive adhesive layer, wherein the substrate layer comprises laminated multiple ionomer layers, each of which comprises an ionomer produced by neutralizing carboxyl groups of an ethylene-unsaturated carboxylic acid copolymer with metal ions, one of the multiple ionomer layers is a high-rigidity ionomer layer, located at the outermost layer and not in contact with the pressure-sensitive adhesive layer of the substrate layer, and having stiffness of 200 N/mm2 or higher, and another one of the multiple ionomer layers is a low-rigidity ionomer layer, located toward the pressure-sensitive adhesive layer in relation to the outermost layer, and having stiffness of lower than 200 N/mm2.
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