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US 2025/0178809 A1Published application
Recyclable shrink films with linear shrink curves
AssigneeKlöckner Pentaplast of America, Inc.
InventorsMatthew Brandon, Mark Vogan, Christian Habrich, Luan Pham
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Abstract
In various examples, the subject matter of this disclosure relates to heat shrinkable films substantially linear heat shrink curves. The gradual and controlled increase in heat shrinkage with an increase in temperature gives rise to preferred characteristics for disclosed heat shrinkable films.
Claims21
A heat shrinkable film comprising a copolyester comprising a diol component and a dicarboxylic acid component,
- wherein the diol component is selected from at least one member from the group consisting of ethylene glycol, diethylene glycol, neopentyl glycol, propylene glycol, polyethylene glycol, tetraethylene glycol, and cyclohexane dimethanol;
- wherein the dicarboxylic acid component is selected from at least one member of the group consisting of isophthalic acid and terephthalic acid;
- wherein 60-90 mol % of the copolyester is amorphous;
- and
- wherein the film is characterized by a heat shrink curve corresponding to shrinkage percentage in a main shrinkage direction as a function of temperature hold for 10 seconds, the heat shrink curve having a slope of less than 2.0 at all 5° C. increments between 65° C. and 95° C.
2 more elements
A heat shrinkable film comprising a copolyester comprising a diol component and a dicarboxylic acid component,
- wherein the diol component is selected from at least one member from the group consisting of ethylene glycol, diethylene glycol, neopentyl glycol, propylene glycol, polyethylene glycol, tetraethylene glycol, and cyclohexane dimethanol;
- wherein the dicarboxylic acid component is selected from at least one member of the group consisting of isophthalic acid and terephthalic acid;
- wherein 60-90 mol % of the copolyester is amorphous;
- and
- wherein the film is characterized by a heat shrink curve corresponding to shrinkage percentage in a main shrinkage direction as a function of temperature hold for 10 seconds, the heat shrink curve characterized by a squared Pearson correlation coefficient of at least 0.95 at temperatures between 60° C. and 95° C.
2 more elements
Dependencies are inferred from the claim text.