Patent ID: 9418577
Filing Date: 2016-08-16
CPC Classification: C23C,G09F,Y10T

Claim Text:
1. A polyester-based metalizing film comprising: a heat-shrinkable polyester-based film base, said base having a first surface and a second surface which is opposite to the first surface; a metal deposition layer formed on the first surface of the base, said metal deposition layer having an optical density of 1.0 to 3.0; a print layer formed on the metal deposition layer; and an anti-curling layer formed on and in contact with the second surface of the base, said anti-curling layer having 0.1 to 5 μm thickness, wherein the polyester-based metalizing film has a curl characteristic value of 5.0 mm or less; wherein the polyester-based metalizing film has a total transmittance of 0.1 to 5.0%; and wherein the curl characteristic value is defined as follows: a heat-shrinkable polyester metalizing film specimen, placed on a first flat surface, is subject to a first cutting at a first direction to form a first cut of 20 cm length and to a second cutting at a second direction which is vertical to the first direction to form a second cut of 20 cm length so as to form four equal 10 cm length cuts, wherein the center of the first cut and the center of the second meet each other; the specimen with four equal length cuts is lift from the first flat surface; the specimen then is placed on a second flat surface with the metal deposition layer faces upward and heights of the four cut edges from the second flat surface are measure; then the specimen is placed on the second flat surface with the metal deposition layer faces downward and heights of the four cut edges from the second flat surface are measured; and the largest value of the measured heights is defined as the curl characteristic value, and wherein the anti-curling layer is a layer made of a composition containing: