ORIENTED POLYESTER FILM

Abstract

An oriented polyester film containing antioxidant and modified polyolefin wax in a surface layer on at least one side thereof, wherein the oriented polyester film is such that the modified polyolefin wax contained in said layer is present in an amount that, as measured based on weight of a composition at said layer, is not less than 0.1 wt % but less than 3.0 wt %, and wherein the modified polyolefin wax is such that acid value thereof is not less than 1 mg KOH/g but less than 50 mg KOH/g, 3 wt % weight loss onset temperature thereof is not less than 300 C., weight-average molecular weight thereof is within a range that is 3,500 to 65,000, and the antioxidant is present in an amount that, as measured based on the weight of the composition, is not less than 0.02 wt % but less than 0.35 wt %.

Claims

1. An oriented polyester film containing antioxidant and modified polyolefin wax in a surface layer on at least one side thereof, wherein the oriented polyester film is such that the modified polyolefin wax contained in said layer is present in an amount that, as measured based on weight of a composition at said layer, is not less than 0.1 wt % but less than 3.0 wt %, and wherein the modified polyolefin wax is such that acid value thereof is not less than 1 mg KOH/g but less than 50 mg KOH/g, 3 wt % weight loss onset temperature thereof is not less than 300 C., weight-average molecular weight thereof is within a range that is 3,500 to 65,000, and the antioxidant is present in an amount that, as measured based on the weight of the composition, is not less than 0.02 wt % but less than 0.35 wt %.

2. The oriented polyester film according to claim 1 wherein the modified polyolefin wax contains at least one species selected from among the group consisting of acid-modified polypropylene wax, acid-modified polyethylene wax, polypropylene oxidate wax, and polyethylene oxidate wax.

3. The oriented polyester film according to claim 1 wherein the modified polyolefin wax is laminarly dispersed within said layer.

4. The oriented polyester film according to claim 1 wherein the modified polyolefin wax possesses at least one species selected from among the group consisting of carboxyl group, ketone group, and hydroxyl group.

5. The oriented polyester film according to claim 1 wherein the modified polyolefin wax contains acid-modified polypropylene wax.

6. The oriented polyester film according to claim 1 wherein the modified polyolefin wax contains acid-modified polyethylene wax.

7. The oriented polyester film according to claim 1 wherein the modified polyolefin wax contains polypropylene oxidate wax.

8. The oriented polyester film according to claim 1 wherein the modified polyolefin wax contains polyethylene oxidate wax.

9. The oriented polyester film according to claim 1 wherein thickness of the oriented polyester film is within a range that is 10 m to 200 m.

10. The oriented polyester film according to claim 1 wherein thickness of the oriented polyester film is within a range that is 15 m to 100 m.

11. The oriented polyester film according to claim 1 wherein polyester is present therein in an amount that is not less than 80 wt % per 100 wt % of the oriented polyester film.

12. The oriented polyester film according to claim 11 wherein the polyester is polyethylene terephthalate.

13. The oriented polyester film according to claim 1 having a multilayer structure that includes said layer.

14. The oriented polyester film according to claim 13 wherein the multilayer structure further possesses a layer that contains colorant pigment.

15. The oriented polyester film according to claim 13 wherein the multilayer structure farther possesses a core layer that is laminated to said layer and the core layer contains colorant pigment.

16. The oriented polyester film according to claim 1 wherein said layer contains colorant pigment.

17. The oriented polyester film according to claim 1 having a single-layer structure that includes said layer.

18. The oriented polyester film according to claim 17 wherein said layer contains colorant pigment.

19. A decorative laminated body having the oriented polyester film according to claim 1, and having at least one functional layer selected from among the group consisting of printing layer, hard coat layer, adhesion layer, and mold release layer provided on at least one face thereof.

Description

WORKING EXAMPLES

[0054] Although the present invention is described in detail below in terms of working examples, it should be understood that the present invention is not limited to only these working examples. Note that values for the various properties were measured in accordance with the methods given below. Furthermore, except where otherwise stated, the parts and percents appearing in the working examples respectively indicate parts by weight and percents by weight.

Melting Point

[0055] Measurement of melting point of polyester was carried out in accordance with a method in which melting peak was determined using a TA Instruments Q100 DSC at a temperature rise rate of 20 C./minute. Note that 10-mg samples obtained by scraping the polyester composition from each of the respective film layers were used.

Intrinsic Viscosity

[0056] Polyester composition scraped from each of the respective film layers was dissolved in 25 ml of o-chlorophenol, following which this was first cooled before colorant pigment and so forth was removed therefrom using a centrifugal separator, calculations for this solution being performed by plotting a calibration curve based on the viscosity of the solution as measured under conditions such that temperature was 35 C. using an Ostwald-type viscosity tube.

Thicknesses of Respective Film Layers

[0057] Samples 2 mm in the long direction and 2 cm in the width direction were cut therefrom and secured within embedding capsules, following which embedding was carried out using epoxy resin. In addition, a microtome (Supercut manufactured by Reichert-Jung) was used to cut the embedded samples perpendicularly with respect to the width direction to obtain thin-film sections that were 50 m in thickness. A scanning electron microscope (Hitachi 4300 SE/N) was used to carry out observation and photography at an acceleration voltage of 20 kV, measurement of thickness of respective layers being carried out based on photographs, thickness being determined as the average of 5 points.

3 wt % Weight Loss Onset Temperature

[0058] The temperature at which the fractional reduction in weight of an 8 mg sample subjected to flowing nitrogen gas (60 ml/min) was 3.0 wt % as measured using a thermogravimetric analyzer (Q50 TGA manufactured by TA Instruments) when temperature was increased at a temperature rise rate of 10 C./min was taken to be the 3 wt % weight loss onset temperature.

Acid Value

[0059] Measurement was carried out in accordance with JIS K 5902.

Colorant Pigment Concentration

[0060] Approximately 1 g to 2 g of polyester composition scraped from each of the respective film layers was placed in a ceramic crucible, and this was heated for not less than 6 hours at 600 C. within an electric dryer, following which the weight of the ash that remained in the crucible was divided by the weight of the original polyester composition to determine the colorant pigment concentration. Colorant pigment concentration within the entirety of the film was calculated in accordance with a similar method using 1 g of biaxially stretched polyester film obtained following film formation.

Antioxidant Concentration

[0061] 10 mg was scraped from the film surface layer, high-performance liquid chromatography was used to separate the respective components, and concentration was calculated by plotting a calibration curve based on the antioxidant peak area.

Coefficient of Friction

[0062] A sled-type measurement apparatus manufactured by Toyo Tester was used in accordance with ASTM D1894-63 to measure the static coefficient of friction (s) between the front and back faces of the film (for laminated film, between mutual wax-containing layer surfaces). Note that a polycarbonate sled was employed, and load was 200 g.

EXCELLENT=Static coefficient of friction was less than 0.30
GOOD=Static coefficient of friction was greater than or equal to 0.30 but less than 0.40
BAD=Static coefficient of friction was greater than or equal to 0.40

Adhesiveness

[0063] Adhesiveness with respect to UV ink was evaluated.

[0064] An RI tester (manufactured by Akira Seisakusho) was used to print a known ultraviolet-curable printing ink (Flash Dry FD Karton P Magenta Ro manufactured by Toyo Ink) on the wax-containing layer face of oriented film, following which this was cured using a medium-pressure mercury lamp (80 W/cm, single-lamp-type; manufactured by Nippon Denchi) UV curing device to form a UV ink layer of thickness 4 m. A strip of cellophane tape (width 18 mm; manufactured by Nichiban) 15 cm in length was applied over this UV ink layer, a 2 kg manually loaded roll was used to apply a constant load thereto from above, and the film was secured as one end of the cellophane tape was peeled off therefrom in a direction that was 90 with respect thereto to evaluate the peel adhesiveness thereof Adhesiveness was evaluated based on the following criteria.

EXCELLENT=There was absolutely no delamination of the ink layer (0%)
GOOD=Less than 10% of the ink layer delaminated
BAD=10% or more of the ink layer delaminated

External Appearance of Film

[0065] Molten polyester was continuously extruded from a die under the conditions indicated at the following respective Working Examples, and longitudinal stretching and lateral stretching were carried out to continuously form oriented film. The film was observed at 30 minutes and 90 minutes following the start of extrusion, the number of defects of diameter 100 m and larger that were present within a 500-cubic-millimeter region was counted, the increase in defect frequency, i.e., the increase in the number of defects per hour, was calculated, and evaluation was carried out based on the following criteria.

EXCELLENT=Increase in defect frequency, i.e., increase in number of defects per hour, was less than 30 defects/500 cubic millimeters
GOOD=Increase in defect frequency, i.e., increase in number of defects per hour, was less than 50 defects/500 cubic millimeters
BAD=Increase in defect frequency, i.e., increase in number of defects per hour, was greater than or equal to 50 defects/500 cubic millimeters

Raw Materials Employed

[0066] Polyester A: Polyester for dilution; polyethylene terephthalate copolymerized with 2 mol % isophthalic acid containing 2.5 mol % diethylene glycol with melting point 245 C. and intrinsic viscosity 0.75

[0067] Polyester B: Composition in which ratio between Polyester A and acid-modified polypropylene wax (3% weight loss onset temperature 321 C.; acid value 26 mg KOH/g; weight-average molecular weight 45,000), expressed as a wt % ratio, was 95:5

[0068] Polyester C: Composition in which ratio between Polyester A and acid-modified polypropylene wax (3% weight loss onset temperature 321 C.; acid value 45 mg KOH/g; weight-average molecular weight 18,000), expressed as a wt % ratio, was 95:5

[0069] Polyester D: Composition in which ratio between Polyester A and polyethylene oxidate wax (3% weight loss onset temperature 332 C.; acid value 15 mg KOH/g; weight-average molecular weight 12,000), expressed as a wt % ratio, was 95:5

[0070] Polyester E: Polyester for dilution; polyethylene terephthalate copolymerized with 12 mol % isophthalic acid containing 1.0 mol % diethylene glycol with melting point 225 C. and intrinsic viscosity 0.66

[0071] Polyester F: Polyester for dilution; polyethylene terephthalate containing 2.5 mol % diethylene glycol with melting point 252 C. and intrinsic viscosity 0.80

[0072] Polyester G: Composition in which ratio between Polyester A and polyethylene oxidate wax (3% weight loss onset temperature 314 C.; acid value 22 mg KOH/g; weight-average molecular weight 8,800), expressed as a wt % ratio, was 95:5

[0073] Polyester H: Composition in which ratio between Polyester A and polyethylene wax (3% weight loss onset temperature 395 C.; acid value 0 mg KOH/g; weight-average molecular weight 18,000), expressed as a wt % ratio, was 95:5

[0074] Polyester I: Composition in which ratio between Polyester A and montan ester wax (3% weight loss onset temperature 281 C.; acid value 13 mg KOH/g), expressed as a wt % ratio, was 95:5

[0075] Polyester J: Composition in which ratio between Polyester A and acid-modified polypropylene wax (3% weight loss onset temperature 350 C.; acid value 11 mg KOH/g; weight-average molecular weight 70,000), expressed as a wt % ratio, was 95:5

[0076] Polyester K: Composition in which ratio between Polyester A and acid-modified polyethylene wax (3% weight loss onset temperature 297 C.; acid value 30 mg KOH/g; weight-average molecular weight 2,700), expressed as a wt % ratio, was 95:5

[0077] Polyester L: Composition in which ratio between Polyester A and acid-modified polypropylene wax (3% weight loss onset temperature 274 C.; acid value 3.5 mg KOH/g; weight-average molecular weight 9,000), expressed as a wt % ratio, was 95:5

[0078] Polyester M: Composition in which ratio between Polyester A and phenol-type antioxidant (2,4,6-tris(3,5-di-tent-butyl-4-hydroxybenzyl)mesitylene), expressed as a wt % ratio, was 99:1

[0079] Polyester N: Composition in which ratio between Polyester A and phenol-type antioxidant (pentaerythritol tetrakis[3-(3,5-di-tent-butyl-4-hydroxyphenyl)propionate]), expressed as a wt % ratio, was 99:1

[0080] Polyester O: Composition in which ratio between Polyester A and phosphate-type antioxidant (tris(2,4-di-tent-butylphenyl) phosphite), expressed as a wt % ratio, was 99:1

Working Examples 1-42; Comparative Examples 1-15

[0081] A blender was used to mix and dry polyester for dilution, wax master polyester, and antioxidant master polyester of the types and in the blending ratios listed at TABLE 1, following which this was extruded from a die at 280 C., and this was quenched and allowed to solidify to obtain unstretched film. Next, this unstretched film was longitudinally stretched by a factor of 3.0 at 100 C., and was thereafter laterally stretched by a factor of 3.5 at 130 C., and this was then subjected to heat-setting at 180 C. to obtain oriented polyester film of thickness 50 m. Results of evaluation of the oriented polyester film that was obtained are shown in TABLE 2.

Working Example 43

[0082] To obtain a two-layer laminated polyester film, a polyester composition similar to that at Working Example 1 was melted at 280 C. for Layer A, and a different extruder was used to melt only Polyester A at 280 C. for Layer B, following which a two-layer feed block was used to laminate these in a two-layer A/B constitution, coextrusion being carried out by adjacent dies, and this was quenched and allowed to solidify to obtain unstretched laminated film. Next, under similar conditions as at Working Example 1, this unstretched film was longitudinally stretched, and was laterally stretched, and was then subjected to heat-setting to obtain oriented polyester film. The thicknesses of the respective layers were respectively 20 m/30 m. Results of evaluation of the oriented polyester film that was obtained were similar to those at Working Example 1 in TABLE 2.

Working Example 44

[0083] To obtain a three-layer laminated polyester film, a polyester composition similar to that at Working Example 19 was melted at 280 C. for Layer A, and for Layer B a different extruder was used to melt at 280 C. a polyester composition in which, as measured based on the weight of the composition, 20 wt % of colorant pigment in the form of rutile titanium oxide (average particle diameter 0.5 m) had been added to Polyester A, following which a three-layer feed block was used to laminate these in a three-layer A/B/A constitution, coextrusion being carried out by adjacent dies, and this was quenched and allowed to solidify to obtain unstretched laminated film. Next, under similar conditions as at Working Example 1, this unstretched film was longitudinally stretched, and was laterally stretched, and was then subjected to heat-setting to obtain oriented polyester film. The thicknesses of the respective layers were respectively 3 m/19 m/3 m, and concentration of colorant pigment in the oriented film was 15 wt %. Results of evaluation of the oriented polyester film that was obtained were similar to those at Working Example 19 in TABLE 2.

Comparative Example 16

[0084] In similar fashion as at Working Example 1, Polyester A, Polyester B, and Polyester Min the blending ratio listed at TABLE 1were extruded in molten form from a die at 280 C., and this was quenched and allowed to solidify, at which time the amount expelled therefrom was suppressed to obtain unstretched film of thickness 50 m. The polyester film that was obtained was unoriented, results of evaluation thereof being shown in TABLE 2.

TABLE-US-00001 TABLE 1 TABLE 1A Oriented polyester film Wax Anti- concen- oxidant tration concen- as tration 3 wt meas- as % ured meas- weight based ured loss Polyester for polyester Antioxidant polyester on based onset Intrin- Intrin- Intrin- Intrin- weight on Weight- temper- Melt- sic Blend- Melt- sic Blend- Melt- sic Type Blend- Melt- sic Wax of weight average ature ing viscos- ing ing viscos- Type ing ing viscos- of ing ing viscos- disper- compo- of weight of point ity ratio point ity of ratio point ity anti- ratio point ity sion sition compo- of wax Type ( C.) (dL/g) (wt. %) Type ( C.) (dL/g) wax (wt. %) Type ( C.) (dL/g) oxidant (wt. %) ( C.) (dL/g) profile (wt. %) sition wax ( C.) Working A 245 0.75 72 B 245 0.60 a 20 M 245 0.65 245 0.68 0.06 45000 321 Example 1 Working A 245 0.75 90 B 245 0.60 a 2 M 245 0.65 8 245 0.71 0.06 45000 321 Example 2 Working A 245 0.75 B 245 0.60 a 60 M 245 0.65 8 245 3.00 0.06 45000 321 Example 3 Working A 245 0.75 72 C 245 0.58 a M 245 0.65 8 245 1.00 0.06 18000 329 Example 4 Working A 245 0.75 88 C 245 0.58 a M 245 0.65 8 245 0.71 0.06 18000 329 Example 5 Working A 245 0.75 52 C 245 0.58 a 40 M 245 0.65 8 245 0.64 0.06 18000 329 Example 6 Working A 245 0.75 72 D 245 b 20 M 245 0.65 8 245 0.68 1.00 0.06 12000 332 Example 7 Working A 245 0.75 90 D 245 b 2 M 245 0.65 8 245 0.71 0.06 12000 332 Example 8 Working A 245 0.75 32 D 245 b 60 M 245 0.65 8 245 0.68 3.00 0.06 12000 332 Example 9 Working A 245 0.75 72 G 245 0.60 b 20 M 245 0.65 8 245 0.62 1.00 0.06 8800 314 Example 10 Working A 245 0.75 72 G 245 0.60 b 25 M 245 0.65 8 245 0.68 1.00 0.06 8800 314 Example 11 Working A 245 0.75 72 G 245 0.60 b M 245 0.65 8 245 0.68 1.00 0.06 8800 314 Example 12 Working A 245 0.75 72 B 245 0.60 a 20 N 245 0.65 8 245 0.68 1.00 0.06 45000 321 Example 13 Working A 245 0.75 90 B 245 0.60 a 2 N 245 0.65 8 245 0.71 0.10 0.06 45000 321 Example 14 Working A 245 0.75 32 B 245 0.60 a 65 N 245 0.65 8 245 0.60 3.00 0.06 45000 321 Example 15 Working A 245 0.75 72 C 245 0.58 a 20 N 245 0.65 8 245 0.68 0.06 18000 329 Example 16 Working A 245 0.75 88 C 245 0.58 a 4 N 245 0.65 8 245 0.71 0.20 0.06 18000 329 Example 17 Working A 245 0.75 52 C 245 0.58 a 40 N 245 0.65 8 245 0.64 2.00 18000 329 Example 18 Working A 245 0.75 72 D 245 0.61 b N 245 0.65 8 245 0.68 0.06 12000 332 Example 19 Working A 245 0.75 90 D 245 0.61 b 2 N 245 0.65 8 245 0.71 0.06 12000 332 Example 20 Working A 245 0.75 D 245 0.61 b 60 N 245 0.65 8 245 0.62 3.00 0.06 332 Example 21 Working A 245 0.75 72 G 245 0.60 b 20 N 245 0.65 8 245 0.68 1.00 0.06 8800 314 Example 22 Working A 245 0.75 72 G 245 b N 245 0.65 8 245 0.06 8800 314 Example 23 Working A 245 0.75 72 G 245 0.60 b 20 N 245 0.65 8 245 0.68 0.06 8800 314 Example 24 Working A 245 0.75 72 B 245 0.60 a 20 O 245 0.65 8 245 0.62 1.00 0.06 45000 321 Example 25 Working A 245 0.75 B 245 0.60 a 2 O 245 0.65 8 245 0.71 0.06 45000 321 Example 26 Working A 245 0.75 32 B 245 0.60 a 60 O 245 0.65 8 245 0.62 0.06 45000 321 Example 27 Working A 245 0.75 72 C 245 0.58 a 20 O 245 0.65 8 245 0.68 1.00 0.06 18000 329 Example 28 Working A 245 0.75 88 C 245 0.58 a 4 O 245 0.65 8 245 0.71 0.20 0.06 329 Example 29 Working A 245 0.75 52 C 245 0.58 a 45 O 245 0.65 8 245 0.64 0.06 18000 329 Example 30 Working A 245 0.75 72 D 245 0.61 b 20 O 245 0.65 8 245 0.68 1.00 0.06 12000 332 Example 31 Working A 245 0.75 90 D 245 0.61 b 2 O 245 0.65 8 245 0.71 0.10 0.06 12000 332 Example 32 Working A 245 0.75 D 245 0.61 b O 245 0.65 8 245 0.63 3.00 12000 332 Example 33 Working A 245 0.75 72 G 245 b O 245 0.65 8 245 0.68 0.06 8800 314 Example 34 Working A 245 0.75 72 G 245 0.60 b 20 O 245 0.65 8 245 0.68 0.06 8800 314 Example 35 Working A 245 0.75 72 G 245 0.60 b 20 O 245 0.65 8 245 0.62 1.00 0.06 8800 314 Example 36 Working A 245 0.75 D 245 0.61 b 20 N 245 0.65 30 245 1.00 12000 332 Example 37 Working A 245 0.75 77 D 245 0.61 b N 245 0.65 245 0.69 1.50 12000 332 Example 38 Working A 245 0.75 50 B 245 0.60 a 20 O 245 0.65 245 0.66 0.24 45000 321 Example 39 Working A 245 0.75 B 245 0.60 a 20 O 245 0.65 245 1.00 0.02 321 Example 40 Working E 225 0.66 72 D 245 0.61 b 20 O 245 0.65 8 245 1.00 332 Example 41 Working F 252 72 D 245 0.61 b O 245 0.65 8 245 0.72 0.06 332 Example 42 A: Polyester A B: Polyester B C: Polyester C E: Polyester E G: Polyester G H: Polyester H J: Polyester J K: Polyester K L: Polyester L N: Polyester N O: Polyester O a: acid-modified polypropylene b: polyethylene oxidate c: polyethylene e: acid-modified polyethylene : phenol-type : phosphate-type TABLE 1B Oriented polyester film Wax Anti- concen- oxidant tration concen- as tration 3 wt meas- as % ured meas- weight based ured loss Polyester for polyester Antioxidant polyester on based onset Intrin- Intrin- Intrin- Intrin- weight on Weight- temper- Melt- sic Blend- Melt- sic Blend- Melt- sic Type Blend- Melt- sic Wax of weight average ature ing viscos- ing ing viscos- Type ing ing viscos- of ing ing viscos- disper- compo- of weight of point ity ratio point ity of ratio point ity anti- ratio point ity sion sition compo- of wax Type ( C.) (dL/g) (wt. %) Type ( C.) (dL/g) wax (wt. %) Type ( C.) (dL/g) oxidant (wt. %) ( C.) (dL/g) profile (wt. %) sition wax ( C.) Comparative A 245 0.75 B 245 0.60 a 1 O 245 0.65 8 245 0.71 0.05 0.06 45000 321 Example 1 Comparative A 245 0.75 B 245 0.60 a 80 O 245 0.65 8 245 4.00 0.06 321 Example 2 Comparative A 245 0.75 C 245 0.58 a 1 O 245 0.65 8 245 0.71 0.05 0.06 Example 3 Comparative A 245 0.75 C 245 0.58 a 80 O 245 0.65 8 245 0.52 4.00 0.06 Example 4 Comparative A 245 0.75 D 245 0.61 b 1 O 245 0.65 8 245 0.71 0.05 332 Example 5 Comparative A 245 0.75 D 245 0.61 b 80 O 245 0.65 8 245 0.60 0.06 12000 332 Example 6 Comparative A 245 0.75 72 H 245 0.60 c 20 O 245 0.65 8 245 0.62 1.00 0.06 395 Example 7 Comparative A 245 0.75 72 I 245 0.55 d 20 O 245 0.65 8 245 1.00 0.06 281 Example 8 Comparative A 245 0.75 72 245 a O 245 0.65 8 245 0.06 350 Example 9 Comparative A 245 0.75 72 245 0.58 e 20 O 245 0.65 8 245 0.68 0.06 3200 297 Example 10 Comparative A 245 0.75 72 245 0.60 a 20 O 245 0.65 8 245 0.62 1.00 0.06 9000 274 Example 11 Comparative A 245 0.75 D 245 0.61 b 20 N 245 0.65 50 245 0.40 332 Example 12 Comparative A 245 0.75 78 D 245 0.61 b N 245 0.65 2 245 0.69 0.01 332 Example 13 Comparative A 245 0.75 50 B 245 0.60 a 20 O 245 0.65 50 245 0.64 1.00 0.40 321 Example 14 Comparative A 245 0.75 78 B 245 0.60 a 20 O 245 0.65 245 0.69 0.01 321 Example 15 Comparative A 245 0.75 72 B 245 0.60 a 25 M 245 0.65 8 245 0.68 45000 321 Example 16 A: Polyester A B: Polyester B C: Polyester C D: Polyester D E: Polyester E G: Polyester G H: Polyester H I: Polyester I J: Polyester J K: Polyester K L: Polyester L M: Polyester M N: Polyester N O: Polyester O a: acid-modified polypropylene b: polyethylene oxidate c: polyethylene d: montan ester e: acid-modified polyethylene : phenol-type : phosphate-type indicates data missing or illegible when filed

TABLE-US-00002 TABLE 2 External Coefficient appearance of friction Adhesiveness of film A Working Example 1 EXCELLENT EXCELLENT EXCELLENT Working Example 2 GOOD EXCELLENT EXCELLENT Working Example 3 EXCELLENT GOOD EXCELLENT Working Example 4 EXCELLENT EXCELLENT EXCELLENT Working Example 5 GOOD EXCELLENT EXCELLENT Working Example 6 EXCELLENT GOOD EXCELLENT Working Example 7 EXCELLENT EXCELLENT EXCELLENT Working Example 8 GOOD EXCELLENT EXCELLENT Working Example 9 EXCELLENT GOOD EXCELLENT Working Example 10 EXCELLENT EXCELLENT EXCELLENT Working Example 11 GOOD EXCELLENT EXCELLENT Working Example 12 EXCELLENT GOOD EXCELLENT Working Example 13 EXCELLENT EXCELLENT EXCELLENT Working Example 14 GOOD EXCELLENT EXCELLENT Working Example 15 EXCELLENT GOOD EXCELLENT Working Example 16 EXCELLENT EXCELLENT EXCELLENT Working Example 17 GOOD EXCELLENT EXCELLENT Working Example 18 EXCELLENT GOOD EXCELLENT Working Example 19 EXCELLENT EXCELLENT EXCELLENT Working Example 20 GOOD EXCELLENT EXCELLENT Working Example 21 EXCELLENT GOOD EXCELLENT Working Example 22 EXCELLENT EXCELLENT EXCELLENT Working Example 23 GOOD EXCELLENT EXCELLENT Working Example 24 EXCELLENT GOOD EXCELLENT Working Example 25 EXCELLENT EXCELLENT EXCELLENT Working Example 26 GOOD EXCELLENT EXCELLENT Working Example 27 EXCELLENT GOOD EXCELLENT Working Example 28 EXCELLENT EXCELLENT EXCELLENT Working Example 29 GOOD EXCELLENT EXCELLENT Working Example 30 EXCELLENT GOOD EXCELLENT Working Example 31 EXCELLENT EXCELLENT EXCELLENT Working Example 32 GOOD EXCELLENT EXCELLENT Working Example 33 EXCELLENT GOOD EXCELLENT Working Example 34 EXCELLENT EXCELLENT EXCELLENT Working Example 35 GOOD EXCELLENT EXCELLENT Working Example 36 EXCELLENT GOOD EXCELLENT Working Example 37 EXCELLENT GOOD EXCELLENT Working Example 38 EXCELLENT EXCELLENT GOOD Working Example 39 EXCELLENT GOOD EXCELLENT Working Example 40 EXCELLENT EXCELLENT GOOD Working Example 41 EXCELLENT EXCELLENT EXCELLENT Working Example 42 EXCELLENT EXCELLENT EXCELLENT B Comparative Example 1 BAD EXCELLENT EXCELLENT Comparative Example 2 EXCELLENT BAD GOOD Comparative Example 3 BAD EXCELLENT EXCELLENT Comparative Example 4 EXCELLENT BAD GOOD Comparative Example 5 BAD EXCELLENT EXCELLENT Comparative Example 6 EXCELLENT BAD GOOD Comparative Example 7 EXCELLENT BAD EXCELLENT Comparative Example 8 GOOD BAD BAD Comparative Example 9 BAD EXCELLENT EXCELLENT Comparative Example 10 EXCELLENT BAD GOOD Comparative Example 11 EXCELLENT GOOD BAD Comparative Example 12 BAD EXCELLENT EXCELLENT Comparative Example 13 EXCELLENT BAD EXCELLENT Comparative Example 14 EXCELLENT EXCELLENT BAD Comparative Example 15 EXCELLENT BAD EXCELLENT Comparative Example 16 EXCELLENT EXCELLENT BAD

INDUSTRIAL UTILITY

[0085] Because an oriented polyester film in accordance with the present invention permits achievement of excellent adhesive force with respect to various members without producing poor external appearance due to occurrence of defects and/or degradation of resin during formation into modified polyester film, and is also provided with a low coefficient of friction permitting achievement of moldability for molding into such items as exterior parts of cars, it may be favorably used, for example, as a decorative film that may be affixed to surface(s) of exterior and/or interior parts of cars.