JP3756171B1 - Method for producing metal-deposited film with antioxidant layer and metal-deposited film with antioxidant layer - Google Patents

Abstract

【Task】
Provided are a method for producing a film in which a metal vapor deposition layer having an antioxidant layer further provided on its surface with a layer for protecting the metal vapor deposition layer from oxidation is laminated, and a metal vapor deposition film having an antioxidant layer by the method.
[Solution]
Finished the water-soluble paint layer laminating step and the water-soluble paint layer laminating step in which a water-soluble paint layer made of a water-soluble paint is partially laminated only on a desired location on the surface of a base film made of a polymer resin. A metal vapor deposition layer laminating step in which a metal vapor deposition layer made of metal or metal oxide is uniformly laminated on both surfaces of the base film where the water-soluble paint layer is laminated and a portion where the water-soluble paint layer is not laminated. Antioxidation layer laminating step in which an antioxidation layer for preventing oxidation of the metal vapor deposition layer is laminated on the surface of the metal vapor deposition layer after the metal vapor deposition layer laminating step, and the oxidation layer laminating step The manufacturing method is composed of a water washing step in which the laminate obtained by the above is washed with water, a drying step in which the laminate is dried after the water washing step, and a drying step.
[Selection]
None

Description

  The present invention relates to a method for producing a film in which a metal vapor-deposited layer having an antioxidant layer is laminated, and a metal vapor-deposited film comprising an antioxidant layer obtained by the production method. Specifically, for example, polyethylene terephthalate ( The present invention relates to a method for producing a film obtained by partially laminating a metal such as silver on the surface of a substrate such as a (PET) film and having an antioxidant layer on the surface, and a film obtained by the method.

  Conventionally, metal-deposited films having patterns and designs have been widely used in order to give a high-class feeling, and in particular, patterns and designs drawn with fine lines having a fine metallic luster are often used. And such a metal vapor deposition film is what was called the process called the punching process of a metal vapor deposition layer.

  Such a metal vapor deposition film is often used as a packaging material, for example. That is, as a high-grade packaging material, a material with fine lines and fine patterns and patterns having a metallic luster is used. In this case, if the base film of the metal vapor deposition film is a transparent film, the contents can be seen through. Depending on the contents, this transparent film is used as a base film, and a high-class design is applied to the surface. Often, the deposited metal film is employed as a packaging material.

  Moreover, the metal vapor deposition film as mentioned above may be used, for example as a packaging material, such as foodstuffs, an electronic material, and a pharmaceutical, from the point that the content can be seen through by making a base film transparent. In this case, rather than presenting a high-class feeling with the metal vapor deposition layer, the metal vapor deposition layer is used as a conductive layer, and by using this as an insulating layer, the contents such as foods, electronic materials, and pharmaceuticals are protected. It is used as a packaging material. In this case, if a metal vapor deposition layer is laminated over the entire surface of the metal vapor deposition film, problems such as lack of flexibility in actual use and production costs due to unnecessary use of a large amount of metal may occur. If the metal vapor deposition layer is laminated only on a part of the surface, the purpose is sufficiently achieved. Therefore, the metal vapor deposition layer is usually only applied to a part of the surface of the base film as described above. The laminated metal vapor deposition film is used as a packaging material.

  Furthermore, the metal vapor deposition film used as such a packaging material is subjected to a process called so-called window opening processing as described above, but paying attention to the point of performing this window opening processing, in addition to the packaging material, For example, it is also used for functional transfer foils, decorations for mobile phones and mobile devices that are rapidly circulating these days, electrical measures such as insulation treatment, and the like.

  The metal vapor deposition films described above are characterized in that most of them have a structure in which a transparent plastic film is used as a base film and a metal vapor deposition layer made of a metal such as aluminum or tin is laminated on a part of the surface. For example, if it is the packaging material mentioned above, the packaging material provided with the metallic luster which gave the original design by providing the metal vapor deposition layer, such as aluminum or tin, in the shape of the linear design on a part of the surface of the transparent plastic film. For example, this can also be effective in design as an edge of a liquid crystal display portion of a mobile phone.

  In order to obtain a substrate partially having such a metal vapor deposition layer, at first, portions other than the surface to be metal vapor deposited were masked and vacuum deposited, but since masking was very troublesome, First, a water-soluble paint is partially applied to the surface of the plastic film by printing or the like, then a metal vapor-deposited layer is uniformly laminated on the place where the water-soluble paint is present or not, and finally the whole The method of washing with water and drying it was used.

  However, when the metal used as the metal vapor deposition layer is a relatively soft metal such as tin or the like and has a low adhesion force, the above-described method is usually employed in the final washing step and the subsequent drying step. When performing the buffing process and the wiping process to be performed, the metal deposition layer itself peels off from the base film, and it is difficult to obtain a beautiful product. This is because the adhesion between the metal vapor-deposited layer having a linear design shape and the plastic film as the substrate is very small compared to the case of a continuous metal vapor-deposited layer.

  Further, even if it is generally expressed as a metal vapor deposition layer, from a fine viewpoint, the metal vapor deposition layer may be a continuous film or an island-like structure. For example, when it is desired to obtain a metallic luster, but at the same time a problem arises if the metal vapor-deposited layer has conductivity, this may be dealt with by using an island-like structure. In the case of an island structure, a phenomenon such as peeling and dropping is more likely to occur than in the case of a continuous film. In addition, if the buffing process and the wiping process as described above are further performed, the peeling and dropping phenomenon occurs more easily, which is a problem.

  Therefore, even if the buffing process and the wiping process in the final process are executed, the metal vapor deposition layer is not damaged, and the metal vapor deposition layer does not easily fall off. The plastic film in which the metal vapor deposition layer is partially provided is performed by the method as described in 1.

Japanese Patent Publication No. 7-37111

  In the case of the invention described in Patent Document 1 described above, a cover is provided by providing a layer of a water-insoluble paint that does not dissolve in water on the outermost surface so that the metal vapor deposition layer portion does not fall off during the washing process. As a result, it is possible to prevent the metal deposited layer portion from falling off.

  However, according to the technique disclosed in Patent Document 1, a layer made of a water-insoluble paint that is unnecessary in the original remains as an outermost layer forever. Although this water-insoluble paint layer can act as a surface cover of the metal vapor deposition layer, the presence of this layer impairs the glossiness obtained by the metal vapor deposition layer. Considering the actual manufacturing process, the process of laminating layers with water-insoluble paint becomes extra, resulting in complicated manufacturing processes and disadvantages in terms of manufacturing costs. Dots will occur. Furthermore, if it is a mere water-insoluble paint, depending on the compatibility between the paint and the metal vapor deposition layer, a phenomenon that the properties of the metal vapor deposition layer are impaired due to, for example, oxidation occurs, which is also a problem.

  The present invention has been made in view of such problems, and its purpose is to laminate a metal vapor deposition layer having an anti-oxidation layer further provided on its surface with a layer for protecting the metal vapor deposition layer from oxidation. It is providing the metal-vapor-deposited film provided with the manufacturing method of the manufactured film, and the antioxidant layer by this method.

In order to solve the above-mentioned problems, a method for producing a film in which a metal vapor-deposited layer provided with an antioxidant layer according to claim 1 of the present invention is laminated is based on a water-soluble paint on the surface of a base film made of a polymer resin. A water-soluble paint layer laminating step, in which a water-soluble paint layer is partially laminated only at a desired location, and a part and a laminate of the base film after the water-soluble paint layer laminating step are laminated. A metal vapor deposition layer laminating step in which a metal vapor deposition layer made of a metal or a metal oxide is uniformly laminated on both surfaces of the unexposed portion, and a surface of the metal vapor deposition layer after the metal vapor deposition layer laminating step is finished. An antioxidant layer laminating step in which an antioxidant layer for preventing oxidation of the metal deposition layer is laminated, a water washing step in which the laminate obtained by the antioxidant layer laminating step is washed with water, After washing process, dry this And comprising a drying step and, it is those of the additional level, the anti-oxidation layer, a melamine resin, or an acrylic polyol / isocyanate two-component curing type resin, formed by formed by either or both of the possible, characterized by .

The invention according to claim 2 of the present invention is the method for producing a film in which the metal vapor deposition layer provided with the antioxidant layer according to claim 1 is laminated, wherein ultrasonic washing or hot water high pressure spray shower is used as the water washing step. It is characterized by using either or both of the cleaning methods.

Invention of Claim 3 of this invention is a manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer of any one of Claim 1 thru | or 2 , and is high-pressure as said drying process. It is characterized by using a compressed air flow.

Invention of Claim 4 of this invention is a manufacturing method of the film which laminated | stacked the metal vapor deposition layer of any one of Claim 1 thru | or 3. WHEREIN: Before performing the said water-soluble coating layer lamination process A release layer laminating step for laminating a release layer on the surface of the base film, a protective layer laminating step for laminating a protective layer for protecting the surface of the metal vapor deposited layer, and a design on the surface of the metal vapor deposited layer. One or a plurality of printing layer laminating steps for laminating printing layers to be applied are performed.

Invention of Claim 5 of this invention is manufactured by the manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer in any one of Claim 1 thru | or 4. And

  As described above, the method for producing a film in which a metal vapor deposition layer provided with an antioxidant layer according to the present invention is laminated is obtained by laminating an antioxidant layer on the surface of the metal vapor deposition layer and obtained by the production method. Since the antioxidant layer remains in the obtained film, even when the obtained film is a metal vapor deposited layer, particularly a film formed by vapor-depositing silver that is easily oxidized, it is possible to prevent deterioration due to oxidation. In addition, since the water-washing and drying steps are performed after laminating the antioxidant layer, the metal vapor-deposited layer can be protected from dropping and peeling during processing.

  Embodiments of the present invention will be described below. The embodiment shown here is merely an example, and is not necessarily limited to this embodiment.

(Embodiment 1)
A method for producing a film in which a metal vapor deposition layer provided with an antioxidant layer according to the present invention is laminated (hereinafter, simply referred to as “film production method”) will be described as a first embodiment.

  The method for producing a film according to the present embodiment includes a water-soluble paint layer laminating step in which a water-soluble paint layer made of a water-soluble paint is partially laminated only on a desired portion on the surface of a base film made of a polymer resin. And metal deposition with a metal or metal oxide uniformly on both the surface of the base film after the water-soluble paint layer laminating step and the portion where the water-soluble paint layer is laminated and the non-laminated portion. A metal vapor deposition layer laminating step in which layers are laminated, and an oxidation layer in which an oxidation prevention layer for preventing oxidation of the metal vapor deposition layer is laminated on the surface of the metal vapor deposition layer after the metal vapor deposition layer lamination step. It consists of a prevention layer laminating step, a water washing step in which the laminate obtained by the antioxidant layer laminating step is washed with water, and a drying step in which it is dried after the water washing step.

Hereafter, each process is demonstrated sequentially.
First, it is a base film made of a polymer resin used in the production method of the present film, and this may be selected and used as appropriate for the purpose. For example, when used as a packaging material, it is preferable to use a transparent plastic film such as a polyethylene terephthalate (PET) film. In the following description, a PET film is used. Moreover, it is preferable that the thickness of the base film in this case is 6 micrometers or more and 300 micrometers or less. This is because when the thickness is less than 6 μm, the film itself is distorted due to heat at the time of laminating the paint layer, the vapor deposition layer, etc., and when the thickness is 300 μm or more, the film itself This is because there is a problem in that it lacks flexibility and is inferior in productivity. In the present embodiment, it is assumed that the PET film has a thickness of 12 μm.

  First, a water-soluble paint layer laminating step is performed in which a layer of a water-soluble paint is partially laminated on the surface of the PET film.

  The water-soluble paint used here is a paint using, for example, polyvinyl alcohol (PVA), ethyl vinyl alcohol (EVOH), or starch as a raw material, and can be easily laminated on the surface of the transparent plastic film. And it is preferable that a certain amount of interlayer adhesion is ensured. A certain level of interlaminar adhesion strength means that the transparent plastic film as a base material must be suitably adhered until the water washing step is performed as described later, and the water-soluble paint is dissolved in water by the water washing step. It is sufficient if the adhesive strength is such that it must be dissolved beautifully.

  The thickness of the water-soluble paint layer formed by the water-soluble paint applied at this time is preferably 0.5 μm or more and 3 μm or less. If it is 3.0 μm or more, it will not be sufficiently dissolved even if washed with water, and a large amount of water will be consumed in the washing step, and the metal deposition layer will not be peeled off at a desired location in the processing step. When the thickness is less than 5 μm, the metal remains even after the water washing step, and peeling occurs before entering the water washing step. In addition, the lamination | stacking method of a water-soluble paint layer may be well-known methods, such as a gravure coating method, a flexographic printing method, or a silk printing method, for example, In this Embodiment, it shall be a gravure coating method.

  When the water-soluble paint layer laminating step is finished as described above, the water-soluble paint layer laminating portion and the non-laminated portion that is not the water-soluble paint layer laminating of the base film that has finished the water-soluble paint layer laminating step next. A metal vapor deposition layer laminating step is performed by uniformly laminating metal vapor deposition layers of metal or metal oxide on both surfaces.

  Although it is the metal or metal oxide laminated | stacked at this process, the metal vapor deposition film provided with the antioxidant layer obtained by the manufacturing method of the film which concerns on this Embodiment produces a high-class feeling, for example, or has high palatability In this embodiment, silver is laminated because it is often used for merchandise, but the present invention is not necessarily limited thereto. In this step, a metal such as silver or a metal oxide is laminated in this step, but the method may be a known one, and various methods such as a sputtering method, a vacuum evaporation method, and an ion plating method are used. It is possible to do. In this embodiment, the vacuum deposition method is used, but this is not limited to this method. Moreover, what is necessary is just to let it be a desired thickness about the thickness of the metal vapor deposition layer formed here also including the relationship with the raw material to select.

  And in this process, the water-soluble paint layer laminated in the above-mentioned water-soluble paint layer coating process is also uniformly laminated on the part where the water-soluble paint layer is not laminated. The thickness is preferably 100 to 2000 mm as measured from the surface of the base film. Further, in the present embodiment, the metal vapor deposition layer may be a so-called continuous film or may have an island structure, and any shape can be supported.

  When the metal vapor deposition layer lamination step is finished, an antioxidant layer for preventing oxidation of the metal vapor deposition layer is then laminated on the surface of the metal vapor deposition layer after the metal vapor deposition layer lamination step. An antioxidant layer stacking step is executed. Here, the anti-oxidation layer is laminated in order to protect the metal vapor deposition layer such as silver described above from deterioration due to oxidation or the like.

  And if it is a substance suitable for such a purpose, what is necessary is just to select a suitable thing at any time, For example, it is formed with either or both of a melamine resin or an acrylic polyol / isocyanate two-component curable resin. In this case, these materials are widely used for oxidation prevention, and it can be said that they are suitable in terms of ease of handling and availability, but are not necessarily limited to these. Absent. As a lamination method, for example, it may be applied and laminated by a technique such as a roll coating method, but this is also not limited to this technique. Further, the thickness of this layer may be appropriately selected and determined so as to achieve the purpose depending on the material used.

  Next, the water washing process which wash | cleans the laminated body obtained in this way with water is performed. Although the specific method of washing here is not particularly limited, there is a problem in that the substance laminated on the surface of the base film may be peeled off and dropped off by executing the washing step. Therefore, for example, ultrasonic cleaning or hot water / high pressure spray shower is preferable because water washing can be performed without peeling and dropping the laminate on the surface of the base film. By executing this water washing step, the water-soluble resin is melted, and as a result, all the layers laminated on the surface of the water-soluble resin are removed.

  When the water washing process is completed, a drying process is finally performed to dry it. The drying method is not particularly limited. However, in order to dry quickly and at the same time, in order to prevent any peeling or falling off of the laminate, for example, when using a high-pressure compressed air flow, peeling or falling off of the laminate is performed. Can be prevented, which is preferable.

  The most important thing in the water washing step and the drying step described above is to prevent peeling and dropping of the laminate, and any method other than the method described above may be used as long as it meets this purpose. I refuse.

  In this way, the manufacturing method of the metal thin film laminated film in the present embodiment is completed. By passing through such a process, the film obtained by the manufacturing method is oxidized on the surface of the metal deposition layer. Since the prevention layer is laminated | stacked, even if it uses the obtained film, it can prevent that metal vapor deposition layers, such as silver, deteriorate by oxidation. Further, since the antioxidant layer is laminated on the surface of the metal vapor deposition layer at the time of manufacture, it is possible to prevent the metal vapor deposition layer from being peeled off and dropped as compared with the conventional method. In addition, if the metal thin film laminated film obtained by the manufacturing method in the present embodiment, the metal vapor deposition layer is not peeled off or dropped off. For example, even if this metal vapor deposition layer is a so-called continuous film, Even a film having a structure can exhibit desired performance.

  Although not described in detail here, in the method for producing a metal vapor deposition film according to the present embodiment, before performing the water-soluble paint layer laminating step, a release layer is formed using a known material on the surface of the base film. When the release layer laminating step for laminating is performed, the metal vapor deposition film obtained by this becomes easy to be a so-called transfer foil depending on the purpose, and further described, for example, by devising the metal vapor deposition layer, It is possible to manufacture and obtain a transfer foil that allows a specific function such as a sex function to be transferred to a desired location.

  Furthermore, if a protective layer laminating step for laminating a protective layer for protecting the surface of the metal vapor deposition layer is performed at the same time, the surface of the metal vapor deposition layer exposed after peeling the base film is, for example, the atmosphere. It is preferable that it is not damaged even if it is exposed, and even if the surface of the metal deposition layer is scratched with something, the surface is protected from being damaged. And if a printed layer for applying some design on the surface of the metal vapor deposition layer is provided, it will appear that some design has been applied to the surface of the metal vapor deposition layer after peeling the base film. Since it can be easily attracted attention if it is used as a packaging material, it will be noted that it is still suitable, but will not be described in detail, but will be added at the end.

Claims (5)

On the surface of the base film made of polymer resin,
A water-soluble paint layer laminating step of partially laminating a water-soluble paint layer with a water-soluble paint only at a desired location;
A metal vapor-deposited layer of metal or metal oxide is uniformly applied to both the surface of the base film after the water-soluble paint layer laminating step and the surface of the part where the water-soluble paint layer is laminated and the non-laminated part. A metal deposition layer laminating step of laminating;
An antioxidant layer laminating step in which an antioxidation layer for preventing oxidation of the metal vapor deposition layer is laminated on the surface of the metal vapor deposition layer after the metal vapor deposition layer laminating step;
A water washing step of washing the laminate obtained by the antioxidant layer laminating step;
A drying step of drying the rinsing step after the water washing step;
Which consists of
The antioxidant layer is formed of either or both of a melamine resin or an acrylic polyol / isocyanate two-component curable resin;
The manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer characterized by these. In the manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer of Claim 1,
Using either or both techniques of ultrasonic cleaning or cleaning using a hot water high pressure spray shower as the water washing step,
The manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer characterized by these. In the manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer of any one of Claim 1 thru | or 2 ,
Using a high-pressure compressed air stream as the drying step,
The manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer characterized by these. In the manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer of any one of Claim 1 thru | or 3 ,
Before performing the water-soluble paint layer lamination step,
Release layer laminating step for laminating a release layer on the surface of the base film, protective layer laminating step for laminating a protective layer for protecting the surface of the metal vapor deposited layer, and for applying a design to the surface of the metal vapor deposited layer A printing layer laminating step of laminating printing layers of
Performing any or more of
The manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer characterized by these. It is manufactured by the manufacturing method of the film which laminated | stacked the metal vapor deposition layer provided with the antioxidant layer in any one of Claim 1 thru | or 4 .
A metal vapor-deposited film provided with an antioxidant layer.