Patent Application
20100221645
The present invention relates to a film having hologram pattern and a container having hologram pattern, and regarding the film having hologram pattern, particularly, relates to a film having hologram pattern, which can be used for containers and packages which accommodate beverages or food.
In recent years, for a decoration purpose, containers, packages, and other objects provided with a hologram pattern on an outer surface thereof have been proposed. A method in which, this hologram pattern, which is an interference fringe pattern recorded on a plane surface, let to have a fine uneven shape in an embossed form or a relief form, is formed directly on an outer surface of a container, or a pattern which is formed separately, is stuck to the outer surface of the container, is being studied.
A method in which, a metallic plate on which, an uneven hologram pattern is connected to the outer surface of the container which is an object, has been proposed as a method for forming the hologram pattern directly on the outer surface of the container. Moreover, as a method for forming the hologram pattern separately, a method in which, an uneven hologram pattern formed on a mother die made of a metallic thin film is formed by pressurizing on a thermoplastic resin or an ultraviolet-cured resin, and is adhered to the outer surface of the container after the resin is cured, has been proposed (Patent literatures 1 and 2).
In these hologram patterns, without forming a protective layer on an outer side, the hologram pattern has been formed as the outermost layer. This is because, when the uneven hologram pattern is filled by a material having a refractive index same as a refractive index of a material which forms the hologram pattern, there is a possibility that a hologram effect disappears.
Whereas, in a process of manufacturing canned food and a process of manufacturing a can which is one of the objects on which the hologram pattern is stuck, for improvement in the productivity, it is preferable to apply a paint for improving a slipping property, on an outer surface of a can
However, when an object is such as a container which is to be kept refrigerated, frozen, or in water during storage, transportation, and arrangement in shop etc. during a period after manufactured till consumed, and other object, there is a possibility that the hologram pattern disappears. In other words, when the uneven pattern is filled due to adhering of water droplets from condensation, and adhering of water for cooling, when a refractive index of water and a refractive index of a material forming the hologram pattern are close, the hologram pattern disappears, and the hologram effect cannot be exhibited.
Moreover, due a person handling the object or a consumer who has purchased the object touching the hologram pattern, there is a possibility that the hologram pattern disappears. This occurs due to the uneven pattern being filled by sebum from the hand, sweat from the hand, and water on the hand of the person handling or the consumer.
Furthermore, in a case of forming a hologram pattern on an outer surface of a can, for maintaining the hologram effect, it is not possible to apply paint on the hologram pattern for improving the slipping property. This is because, when the uneven pattern is filled by the paint, there is a possibility that the hologram effect disappears. In this manner, as the paint for improving the slipping property cannot be applied, in a can having a hologram pattern, degradation of productivity of manufacturing of the can and productivity of manufacturing of canned food cannot be helped, and there is a possibility that this leads to a rise in a production cost.
Therefore, an object of the present invention is to provide a film having hologram pattern and a container having hologram pattern which enables to prevent the hologram pattern from disappearing due to water droplets, sebum, and sweat adhered to the hologram pattern, and which enables to exhibit the hologram effect during storage, transportation, and arrangement in shop etc. during a period after manufactured till consumed. Consequently, an object of the present invention is to provide a film having hologram pattern and a container having hologram pattern in which, the hologram pattern can be checked visually, without selecting a state and a condition of storage, transportation, and arrangement.
Furthermore, an object of the present invention is to provide a film having hologram pattern and a container having hologram pattern in which, it is possible to apply a paint on the hologram pattern for improving a slipping property, and accordingly, there is no degradation of productivity of a manufacturing process of cans and a manufacturing process of canned food.
To solve the abovementioned problems, a film having hologram pattern of the present invention, which is to be used by disposing on an outer surface of an object, includes a hologram-pattern forming layer, on one surface of which, a hologram pattern is formed, and a thin-film layer is formed along that shape, on the hologram pattern, and at least one layer which is disposed at an outer side of the hologram-pattern forming layer.
In the film having hologram pattern of the present invention, it is preferable that the hologram-pattern forming layer is disposed such that the hologram pattern comes to an outer surface side of the object, and the thin-film layer is a vapor deposition layer. It is preferable that the vapor deposition layer has reflectivity, or transparency and high refractive index.
In the film having hologram pattern of the present invention, a resin layer may be formed at a distant side from an outer surface of the object with respect to the hologram-pattern forming layer.
In the film having hologram pattern of the present invention, the resin layer may be a resin film on which, the hologram-pattern forming layer is formed.
In the film having hologram pattern of the present invention, it is preferable that the hologram-pattern forming layer is formed as a film on the resin layer, via an ink layer.
In the film having hologram pattern of the present invention, a second ink layer which is different from the ink layer may be formed on a surface of a resin layer, on an opposite side of a surface on which, the ink layer and the hologram-pattern forming layer are formed.
In the film having hologram pattern of the present invention, an ink layer may be formed on a surface of the resin layer, which is distant from the outer surface of the object.
In the film having hologram pattern of the present invention, it is preferable that the ink layer is formed directly on the resin layer.
In the film having hologram pattern of the present invention, it is desirable that the film having hologram pattern is stuck to the outer surface of the object by an adhesive layer which is formed on the vapor deposition layer.
In the a film having hologram pattern according to a second aspect of the present invention, the hologram pattern forming layer is disposed such that the hologram pattern comes at a side distant from the outer surface of the object, and the thin-film layer is a vapor deposition layer.
In the film having hologram pattern according to the second aspect of the present invention, it is preferable that in the hologram-pattern forming layer, a resin layer is disposed on an outer surface side of the object.
In the film having hologram pattern according to the second aspect of the present invention, in the resin layer, an ink layer may be formed on a surface on an outer surface side of the object.
In the film having hologram pattern according to the second aspect of the present invention, the vapor deposition layer may have transparency and high refractive index.
In the film having hologram pattern according to the second aspect of the present invention, it is preferable that the resin layer is a PET film.
In the film having hologram pattern of the present invention, a container can be selected as the object.
A container having hologram pattern of the present invention includes a hologram-pattern forming layer on an outer surface, on one surface of which, a hologram pattern is formed, and a thin-film layer is formed along a shape thereof, on the hologram pattern, and furthermore, at least one layer is disposed at an outer side of the thin-film layer.
According to the present invention, as a structure is made such that a hologram-pattern forming layer, on one surface of which, a hologram pattern is formed, and a thin-film layer is formed along a shape thereof, on the hologram pattern, is included at an inner side of a layer structure, since the hologram-pattern forming layer or the thin-film layer does not exist on the outermost surface of the object, it is possible to prevent the hologram pattern from disappearing due to water droplets, sebum, and sweat adhered to the hologram pattern. Accordingly, it is possible to check the hologram pattern visually without selecting a state and a condition of storage, transportation, and arrangement.
Moreover, according to the abovementioned structure, since the hologram pattern does not disappear even when a paint for improving a slipping property is applied on the hologram pattern, it is possible to provide a film having hologram pattern and a container having hologram pattern without degradation of productivity of a manufacturing process of cans and a manufacturing process of canned food.
A film having hologram pattern and a container having hologram pattern according to embodiments of the present invention will be described below in detail while referring to the accompanying diagrams.
The film having hologram pattern according to the embodiments of the present invention is a film in a sheet form, a roll-film form, and a label form which is to be used by disposing on an outer surface of containers, packages, and other objects which accommodate beverages or food. Containers such as a metal can, a plastic container, a container and a package made of paper, and a container including aluminum can be cited as examples the object.
This film having hologram pattern includes a hologram-pattern forming layer, and a hologram pattern is formed on one surface of this hologram-pattern forming layer, and a thin-film layer is formed along a shape thereof, on the hologram pattern. The thin-film layer is formed may a method such as vapor deposition, sputtering, and CVD (chemical vapor deposition). In other words, the thin-film layer is not a layer which fills an uneven pattern of the hologram pattern.
Resins such as a thermoplastic resin, an ultraviolet cured resin, and a self-curable resin can be used as the hologram-pattern forming layer. The hologram pattern is formed by curing by a method according to a material, after an uneven hologram pattern formed on a mother die is formed by pressurizing on a material which forms the hologram-pattern forming layer.
The hologram-pattern forming layer is disposed such that the hologram pattern comes to an outer surface side of an object, or to a side distant from an outer surface of the object. When the hologram-pattern forming layer is disposed such that the hologram pattern comes to the outer surface side of the object (so as to be directed toward the outer surface of the object), it is preferable that the thin-film layer which is formed on the hologram pattern has a reflectivity, or a transparency and a high refractive index. The thin-film layer in this case, when to be imparted reflectivity, can be formed by vapor depositing aluminum, and when to be imparted transparency and high refractive index, can be formed by vapor depositing titanium oxide, aluminum oxide, zinc oxide, zinc sulfide, a zirconium compound, zinc sulfide, silicon oxide, and indium tin oxide (ITO).
The film having hologram pattern is stacked in order between an ink layer and the thin-film layer, sandwiching at least one of the hologram-pattern forming layer and the resin layer. Consequently, by a material (such as a vapor deposition material) which forms the thin-film layer making a direct contact with the ink layer, it is possible to suppress an effect on value, hue, and saturation of ink.
When the film having hologram pattern which is let to have such structure is stuck to the outer surface of the object, since incident light which has passed through the hologram-pattern forming layer is reflected or refracted according to unevenness of the thin-film layer, it is possible to check the hologram pattern visually. Furthermore, as the hologram-pattern forming layer is disposed on the outer side of the hologram pattern, and furthermore, at least one layer (such as a varnish layer) is disposed at an outer side thereof, since it is possible to lower extremely a possibility that water droplets due to condensation, sebum of the hand, sweat from the hand, and water adhered to the hand of a person handling or a consumer are adhered to the hologram pattern, it is possible to prevent disappearing of the hologram pattern. Furthermore, it is possible to apply a general purpose paint for improving a slipping property on an outer side of the hologram-pattern forming layer, and accordingly, it is possible to prevent degradation in productivity of a manufacturing process of can and a manufacturing process of canned food.
Whereas, when the hologram pattern is disposed to come to the side distant from the outer surface of the object, it is preferable that the thin-film layer which is to be formed on the hologram pattern has transparency and high refractive index. It is preferable that the thin-film layer has transparency, and is formed of a material having a substantial refractive index (such as titanium oxide, aluminum oxide, zinc oxide, zinc sulfide, a zirconium compound, zinc sulfide, silicon oxide, and indium tin oxide (ITO)).
When the film having hologram pattern which is let to have such structure is stuck to the outer surface of the object, since incident light is refracted according to the unevenness of the thin-layer film, it is possible to check the hologram pattern visually. Moreover, by the thin-film layer being disposed on the outer side of the hologram pattern, and furthermore, at least one more layer (such as a varnish layer) being disposed at the outer side thereof, it is possible to reduce a possibility that water droplets due to condensation, sebum of the hand, sweat from the hand, and water adhered to the hand of a person handling or a consumer are adhered to the uneven hologram pattern, and even when adhered, by the transparency and the high refractive index of the thin-film layer, it is possible to prevent disappearing of the hologram pattern.
Furthermore, by forming the thin-film layer by a transparent material having high refractive index, or by a reflective material, it is possible to stack paint for improving the slipping property or a transparent-material layer on the hologram pattern. In other words, even when the uneven hologram pattern is filled by paint, by the reflectivity or the high refractive index of the thin-film layer, it is possible to maintain a visibility of the hologram pattern. Moreover, when a paint for improving the slipping property is applied, it is possible to prevent degradation in productivity of the manufacturing process of can and the manufacturing process of canned food.
A first embodiment in which, a hologram pattern is disposed at an outer surface side of a container which is an object, and a second embodiment in which, a hologram pattern is disposed at a side distant from the outer surface of the object will be described below in detail one after another.
A film having hologram pattern 10 according to the first embodiment is disposed such that a hologram pattern 14 comes to a side of an outer surface 21a of a container 21 which is the object, and accordingly, a container having hologram pattern 30 is formed. A structure thereof will be described below in order of a manufacturing process of each step, while referring to
(1) Process of Manufacturing Film with Hologram Pattern
It is preferable that a base material film 11 (resin layer) (
The ink layer 12 is formed on an outer surface 11a (a surface on a side near the outer surface 21a when the film having hologram pattern 10 is stuck to the outer surface 21a of the container 21). The ink layer 12 is formed to become a pattern determined in advance by gravure for example (
Next, the hologram-pattern forming layer 13 is formed on the ink layer 12, at a portion in which, the ink layer 12 is formed, and on the base material film 11, at a portion in which, the ink layer 12 is not formed (
Next, a hologram pattern is formed on an outer surface 13a of the hologram-pattern forming layer 13. The formation of the hologram pattern is carried out by pressing a mother die which is formed separately, against the outer surface 13a of the hologram-pattern forming layer 13 in an uncured state. After pressing, by stopping heating if it is a thermoplastic resin, by irradiating ultraviolet rays if it is a ultraviolet-cured resin, and by leaving till an internal reaction is completed if it is a self-curable material, the hologram-pattern forming layer 13 is cured, and a hologram pattern 14 is fixed to the outer surface thereof (
Here, the mother die is formed in the following manner. In other words, a laser interference film is exposed on a plate on which a photoresist is applied, and after an uneven resist pattern according to a density of an interference fringe is formed, a thin film is formed by vapor depositing a metal on the resist pattern, and nickel is plated thereon. Next, by peeling a plating layer, a mother die having a fine uneven hologram pattern transferred precisely on nickel is formed.
Finally, a vapor deposition layer 15 as a thin-film layer along that pattern is formed on the hologram pattern 14 (
Firstly, an adhesive layer 23 is formed by applying an adhesive material on the vapor deposition layer 15 (
Next, by curing the adhesive layer 23 while allowing the uncured adhesive layer 23 to be in contact with the outer surface 21a of the container 21, the film having hologram pattern 10 is stuck to the container 21 (
Finally, a varnish layer 16 is formed by applying varnish on the base material film 11 (
As the varnish layer 16 can be formed on the base material film, or in other words, on the outermost layer of the container having hologram pattern 30, since it is possible to achieve the slipping property and gloss as was achieved conventionally, it is possible to manufacture a container having a high quality decorativeness and design without degrading productivity of a manufacturing process of the container.
As it has been structured as described above, according to the abovementioned embodiment, the following effects (1) to (4) are shown.
(1) Since the vapor deposition layer 15 which has reflectivity, or transparency and high refractive index is formed along the shape of the hologram pattern 14, on the hologram pattern 14, it is possible to make reflect or refract according to the shape of the hologram pattern 14, and accordingly, it is possible to check the hologram pattern visually.
(2) Since the hologram-pattern forming layer 13 exists all the time at an outer side of the hologram pattern 14 by the hologram pattern 14 being formed on one layer (the outer surface 13a) of the hologram-pattern forming layer 13, and moreover, by the hologram-pattern forming layer 13 being disposed such that the hologram pattern 14 is on the side of the container 21, it is possible to prevent the hologram pattern from disappearing due to adhering of water droplets, sebum, and sweat on the hologram pattern 14. Consequently, the hologram pattern can be checked visually, without selecting a state and a condition of storage, transportation, and arrangement.
(3) Since it is possible to apply the varnish layer 16 or a paint for improving the slipping property on the outermost layer without making the hologram pattern 14 disappear, there is no degradation in productivity of a manufacturing process of a container and a process of filling the content.
(4) By providing the ink layer 12 on an outer side of the hologram pattern 14, as it is possible check the pattern of the ink visually by making disappear the hologram pattern at a portion where the ink layer 12 is there, and it is possible to check the hologram pattern visually at a portion where the ink layer 12 is not there, it is possible to provide film having hologram pattern and a container having hologram pattern having higher decorativeness.
A modified embodiment of the first embodiment will be described below while referring to
In the first embodiment described above, the ink layer 12 and the hologram-pattern forming layer 13 have been stacked on the base material film 11. Instead of this, as shown in
A film having hologram pattern 50 according to the modified embodiment shown in
A base material film for outermost layer 41 on which the ink layer 42 is provided (
A material similar to a material of the base material film 11 can be used for a base material film 51 on which, a hologram-pattern forming layer 53 is to be provided (
Next, the hologram pattern 54 is formed on an outer surface 53a of the hologram-pattern forming layer 53 (
Finally, a vapor deposition layer 55 as a thin-film layer is formed on the hologram pattern 54, along the pattern (
Firstly, an adhesive layer 43 is formed by applying an adhesive material on the outer surface 41a on which, the ink layer 42 of the outermost layer film 40 is provided. An adhesive material similar to the adhesive layer 23 of the first embodiment is used. Next, by curing the adhesive layer 43 while dabbing the uncured adhesive layer 43 at a surface of the base material film 51 on which the hologram pattern 54 is not formed, the outermost layer film 40 and the film having hologram pattern 50 are stuck mutually (
Next, the adhesive layer 23 is formed by applying an adhesive material on the vapor deposition layer 55 (
In the container having hologram pattern 60 shown in
Other actions and effects are similar as in the first embodiment.
A second modified embodiment of the first embodiment will be described below while referring to
In the first embodiment described above, the hologram-pattern forming layer 13 is stacked further on the ink layer 12 which is stacked on the base material film 11, and in the second modified embodiment, an ink layer 212 and a hologram-pattern forming layer 213 are stacked on opposite surfaces respectively of the base material film 211 as shown in
Details will be described below in detail while referring to
A material similar to the material of the base material film 11 of the first embodiment is used for the base material film 211 (resin layer) on which, the ink layer 212 and the hologram-pattern forming layer 213 are provided. The hologram-pattern forming layer 213 is formed on an outer surface 211a (a surface near to a side of the outer surface 21a when a film having hologram pattern 210 is stuck to the outer surface 21a of the container 21). The hologram-pattern forming layer 213 is formed by a similar method by using a material similar to the hologram-pattern forming layer 13 of the first embodiment. Next, a hologram pattern 214 is formed on an outer surface of the hologram-pattern forming layer 213 by a method similar to the method for forming the hologram pattern 14 of the first embodiment.
Furthermore, a vapor deposition film 215 as the thin-film layer is formed along the pattern, on the hologram pattern 214 (
Next, the ink layer 212 is formed on an inner surface 211b of the base material film 211, on an opposite side of the outer surface 211a. This ink layer 12 is formed to become a pattern determined in advance, by a method such as gravure, flexo printing, and ink-jet printer. The film having hologram pattern 210 is formed by the process described above (
Firstly, an adhesive layer 223 is formed by applying an adhesive material on the vapor deposition layer 215 (
Furthermore, a varnish layer 216 is formed by applying varnish on the inner surface 211b of the base material film 211, on which the ink layer 212 is stacked, and a container having hologram pattern 230 is completed (
In the container having hologram pattern 230 shown in
Other actions and effects are similar as in the first embodiment.
Next, a third modified embodiment of the first embodiment will be described below while referring to
In a process of manufacturing film having hologram pattern, firstly, the ink layer 312 is formed on the outer surface 311a of the base material film 311, and the second ink layer is formed on the inner surface of the base material film 311 (
A mat ink can be used for the second ink layer 322. As a mat ink, an ink containing 10˜25 phr (per hundred resin) of silica may be used.
After the 210 is stuck on the outer surface 21a of the container 21, varnish is applied on the second ink layer 322, and accordingly, the varnish layer 316 is formed (
Other actions and effects are similar as in the first embodiment.
A film having hologram pattern 110 according to a second embodiment is disposed such that a hologram pattern 114 comes to a side distant from the outer surface 21a of the container 21 which is the object, and accordingly, a container having hologram pattern 130 is formed. This structure will be described in order of a manufacturing process of each layer while referring to
A material similar to the material of the base material film 11 of the first embodiment can be used for a base material film 111 on which, an ink layer 112 and a hologram-pattern forming layer 113 are formed (
Next, the hologram-pattern forming layer 113 is formed on a surface 111b of the base material film 111, facing the outer surface 111a on which the ink layer 112 is provided (
Next, a hologram pattern 114 is formed on an outer surface 113a of the hologram-pattern forming layer 113 (
Finally, a vapor deposition layer 115 as the thin-film layer is formed along that pattern, on the hologram pattern 114 (
Firstly, on the surface 111a of the base material film 111 on which the ink layer 112 is provided, the adhesive layer 23 is formed by applying an adhesive material similarly as the adhesive layer 23 of the first embodiment on the ink layer 112 at a portion where the ink layer 112 is formed, and on the surface 111a at a portion where the ink layer 112 is not formed (
Next, by curing the adhesive layer 23 while dabbing the uncured adhesive layer 23 at the outer surface 21a of the container 21, the film having hologram pattern 110 is stuck to the container 21 (
Finally, a varnish layer 116 is formed by applying varnish on the vapor deposition layer 115 (
In the container having hologram pattern 130 according to the second embodiment, as the vapor deposition layer 115 having transparency and high refractive index is formed on the hologram pattern 114, even when the varnish layer 116 is formed on the vapor deposition layer 115, the hologram pattern does not disappear. Furthermore, a pattern of the ink layer 112 formed on the side of the container 21 can be checked visually.
Moreover, by providing the varnish layer 116, since sebum of the hand, sweat from the hand, and water adhered to the hand of a person handling or a consumer does not reach the vapor deposition layer 115, it is possible to prevent the hologram pattern from disappearing.
Other actions, effects, and modified embodiments are similar to those of the first embodiment.
A modified embodiment of the second embodiment will be described below while referring to
In the second embodiment, the ink layer 112 and the hologram-pattern forming layer 113 have been stacked on the base material film 111, but instead of this, as shown in
A film having hologram pattern 150 according to the modified embodiment shown in
A base material film 141 on which the ink layer 142 is provided (
A material similar to the material of the base material film 11 can be used for a base material film 151 on which, a hologram-pattern forming layer 153 is to be provided (
Next, the hologram pattern 154 is formed on an outer surface 153a of the hologram-pattern forming layer 153 (
Finally, a vapor deposition layer 155 as a thin-film layer is formed on the hologram pattern 154, along the pattern (
Firstly, an adhesive layer 143 is formed by applying an adhesive material on an inner surface 141b of the printing film 140, facing the outer surface 141a on which the ink layer 142 is provided. An adhesive material similar to the adhesive layer 23 of the first embodiment is used. Next, by curing the adhesive layer 143 while dabbing the uncured adhesive layer 143 at the hologram pattern 154 (the vapor deposition layer 155) of the film having hologram pattern 150, the printing film 140 and the film having hologram pattern 150 are stuck mutually (
Next, the adhesive layer 23 is formed by applying an adhesive material on the outer surface 141a of the base material film 141 (
Finally, a varnish layer 146 is formed by applying varnish on the base material film 151 (
In the container having hologram pattern 160 shown in
Other actions and effects are similar as in the second embodiment.
Although the present invention has been described while referring to the abovementioned embodiments, the present invention is not restricted by the abovementioned embodiments, and modifications and changes within a range of an object of the modification and basic teachings of the present invention are possible.
As it has been described above, since the film having hologram pattern according to the present invention can be maintained to have visibility of the hologram pattern without selecting a state and a condition of storage, transportation, and arrangement, it is useful for decoration of containers, packages, and other objects.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2007-190239 | Jul 2007 | JP | national |
| Filing Document | Filing Date | Country | Kind | 371c Date |
|---|---|---|---|---|
| PCT/JP2008/001922 | 7/18/2008 | WO | 00 | 4/29/2010 |
