Barrier film and method for production thereof
First Claim
1. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the steam permeability is within a range of from 2.0 to 0.000001 g/m2.day and the oxygen permeability is within a range of from 2.0 to 0.000001 cc/m2.day.atm.
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Abstract
The present invention provides a barrier-forming film (A) useful for manufacturing various packaging container, which has a higher barrier-formability to prevent permeation of oxygen gas or steam, and a manufacturing method thereof. The barrier-forming film of the invention comprises a substrate film (1) having a vapor-deposited film (2) of an inorganic oxide, and by applying an annealing treatment thereto to limit the steam permeability within a range of from 2.0 to 0.000001 g/m2.day, and the oxygen permeability, within a range of from 2.0 to 0.000001 cc/m2.day.
38 Citations
28 Claims
- 1. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the steam permeability is within a range of from 2.0 to 0.000001 g/m2.day and the oxygen permeability is within a range of from 2.0 to 0.000001 cc/m2.day.atm.
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2. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the improvement ratio of the steam permeability is increased to a range of from 1/100 to 99/100, and that of the oxygen permeability to a range of from 1/100 to 99/100 as compared with those before the annealing treatment.
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3. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film. further subjected to an annealing treatment, wherein the amount of decrease in the steam permeability is improved to a range of from −
- 0.1 to −
30 g/m2.day, and the amount of decrease in the oxygen permeability, to a range of from −
0. 1 to −
10 cc/m2.day.atm.
- 0.1 to −
-
4. A barrier-forming film comprising a substrate film having a vapor deposited inorganic oxide film, further subjected to an annealing treatment, wherein the degree of yellowing is improved to a range of from −
- 0.3 to −
2.0.
- 0.3 to −
-
5. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the amount of change in X-value of the inorganic oxide expressed by a formula MOx (where, M represents a metal element;
- and the range of the value of X varies between metal elements) composing the vapor-deposited film of the inorganic oxide is increased to a range of from +0.01 to +0.50.
-
6. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, wherein the surface roughness of the vapor-deposited inorganic oxide film is adjusted within a range of from 3 to 30 nm.
-
7. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic film, further subjected to an annealing treatment, wherein the surface roughness of said vapor-deposited inorganic oxide film is adjusted within a range of from 3 to 30 nm.
-
8. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the standard deviation of surface irregularities Rms representing the surface roughness of said vapor-deposited inorganic oxide film is improved to a range of from 1.01 to 100 times as high as that before the annealing treatment.
-
9. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the shrinkage factor of said substrate film is reduced to a range of from −
- 0.001 to −
1.0% in at least any one of the flow direction and the width direction upon forming the film, and the thickness of said vapor-deposited inorganic oxide film is adjusted within a range of from 50 to 1,000 Å
(5 to 100 nm) as compared with those before the annealing treatment.
- 0.001 to −
-
10. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the standard deviation of surface irregularities Rms representing the surface roughness of said vapor-deposited inorganic oxide film is improved to a range of from 1.01 to 100 times as high;
- the steam permeability thereof is adjusted within a range of from 2.0 to 0.000001 g/m2.day; and
the oxygen permeability, within a range of from 2.0 to 0.000001 cc/m2.day.atm, as compared with those before the annealing treatment.
- the steam permeability thereof is adjusted within a range of from 2.0 to 0.000001 g/m2.day; and
-
11. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the shrinkage factor of said substrate film is reduced to a range of from −
- 0.001 to −
1.0% in at least any one of the flow direction and the width direction upon forming the film;
the steam permeability thereof is adjusted within a range of from 2.0 to 0.000001 g/m2.day; and
the oxygen permeability, within a range of from 2.0 to 0.000001 cc/m2.day.atm, as compared with those before the annealing treatment.
- 0.001 to −
-
12. A barrier-forming film comprising a substrate film having a vapor-deposited inorganic oxide film, further subjected to an annealing treatment, wherein the steam permeability thereof is improved to a range of from 2.0 to 0.000001 g/m2.day;
- the oxygen permeability thereof, to a range of from 2.0 to 0.000001 cc/m2.day.atm;
the degree of yellowing, to a range of from −
0.3 to −
2.0;
the amount of change in X-value of the inorganic oxide expressed by a formula MOx (where, M represents a metal element;
the range of the value of X varies between metal elements) composing the vapor-deposited film of the inorganic oxide is increased to a range of from +0.01 to +0.50; and
the surface roughness of the vapor-deposited inorganic oxide film is adjusted within a range of from 3 to 30 nm.
- the oxygen permeability thereof, to a range of from 2.0 to 0.000001 cc/m2.day.atm;
- 18. A manufacturing method of a barrier-forming film comprising the steps of providing a vapor-deposited inorganic oxides film on a side of a substrate film, and applying an annealing treatment to the substrate film having said vapor-deposited inorganic film.
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19. A manufacturing method of a barrier-forming film comprising the steps of providing a vapor-deposited inorganic oxides film on a side of a substrate film, and applying an annealing treatment to the substrate film having said vapor-deposited inorganic film, to cause thermal shrinkage of the substrate film composing the substrate film having the vapor-deposited inorganic oxide film, and to increase density of the vapor-deposited inorganic oxide film.
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24. A barrier-forming film comprising a substrate film having a vapor-deposited silicon oxide film formed on one side of the substrate film, wherein said substrate film having said vapor-deposited silicon oxide film is heat-treated at a heat treatment temperature of at least room temperature for a heat treatment time of at least one hour;
- the steam permeability thereof is within a range of from 2.0 to 0.000001 g/m2.day;
the oxygen permeability is within a range of from 2.0 to 0.000001 cc/m2.day.atm;
the degree of yellowing is improved to a range of from −
0.3 to −
2.0; and
the amount of change in X-value of silicon oxide as expressed by a formula building the vapor-deposited film SiOx is increased to a range of from +0.01 to +0.50.
- the steam permeability thereof is within a range of from 2.0 to 0.000001 g/m2.day;
-
25. A barrier-forming film comprising a substrate film having a vapor-deposited silicon oxide film formed on one side of the substitute film, wherein the steam permeability thereof is within a range of from 2.0 to 0.000001 g/m2.day;
- and the oxygen permeability thereof is within a range of from 2.0 to 0.000001 cc/m2.day.atm.
-
26. A barrier-forming film comprising a substrate film having a vapor-deposited silicon oxide film formed on one side of the substrate film, wherein said substrate film is heat-treated at a heat treatment temperature of at least room temperature for a heat treatment time of at least one hour to improve the degree of yellowing to a range of from −
- 0.3 to −
2.0.
- 0.3 to −
-
27. A barrier-forming film comprising a substrate film having a vapor-deposited silicon oxide film formed on one side of the substrate film, wherein said substrate film is heat-treated at a heat treatment temperature of at least room temperature for a heat treatment time of at least one hour to increase the amount of change in X-value of silicon oxide as expressed by a formula SiO2 composing the deposited film to a range of from +0.01 to +0.50.
-
28. A manufacturing method of a barrier-forming film, comprising the steps of providing a vapor-deposited silicon oxide film on one side of a substrate film, and heat-treating the substrate film having said vapor-deposited silicon oxide film at a heat treatment temperature of at least room temperature for a heat treatment time of at least one hour.
Specification