SHRINK FILM AND SHRINK LABEL
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United States of America Patent
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Issued Date -
Jun 4, 2015
app pub date -
Jun 25, 2013
filing date -
Jul 10, 2012
priority date (Note) -
Abandoned
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Abstract
The shrink film has a multilayer structure including layers A, B, C, B, and A disposed in this sequence without the mediation of another layer. The layers A include 50 percent by weight or more of a polystyrene resin. The layers B include 20 to 80 percent by weight of a polystyrene resin and 20 to 80 percent by weight of a polypropylene resin. The layer C includes 50 percent by weight or more of a polypropylene resin. The polystyrene resin in the layer A includes a styrenic-monomer-derived constitutional unit of 85 to 95 percent by weight and a diene-derived constitutional unit of 5 to 15 percent by weight. The polystyrene resin in the layer B includes a styrenic-monomer-derived constitutional unit of 50 to 80 percent by weight and a diene-derived constitutional unit of 20 percent by weight to less than 50 percent by weight.
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