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US 7,008,698 B2Granted
Propane diol-based polyester resin and shrink film
AssigneeMitsubishi Polyester Film GmbH
InventorsChadwick E. Marlow, Charles D. Carlson, Jr., Robert G. Posey, Gary R. Garner, Russell S. Foxhall
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Abstract
A shrinkable polymer film including a modified polyester resin polymerized from monomers including a dicarboxylic acid and a glycol, wherein the glycol includes 2-methyl-1,3-propanediol, and wherein the polymer film shrinks at least about 50% in a main shrinkage direction after ten seconds in an 80 degree Celsius hot water bath.
Claims35
A shrinkable polymer film comprising:
- a modified polyester resin polymerized from monomers including a dicarboxylic acid and a glycol, wherein the glycol includes 2-methyl-1,3-propanediol,
- and wherein the polymer film shrinks at least about 50% in a main shrinkage direction after ten seconds in an 80 degree Celsius hot water bath.
A method of forming a polymer film comprising the step of:
- extruding a modified polyester resin polymerized from monomers including a dicarboxylic acid and a glycol, wherein the glycol includes 2-methyl-1,3-propanediol, to form the polyester film,
- wherein the polymer film shrinks at least about 50% in a main shrinkage direction after ten seconds in an 80 degree Celsius hot water bath.
Dependencies are inferred from the claim text.