JP2010036480A - Foil fracture proof transfer film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transfer film capable of not only preventing foil fracture, but generating no unevenness on a transfer layer caused by an easy adhering resin layer or causing no problems such as reduced adhesion of a mold release layer or transition of a coloring agent to a surface of an exfoliation layer, and is easy in registering when slitting. <P>SOLUTION: A foil fracture proof transfer film is characterized in that; at least the exfoliation layer, a decorative layer and an adhesive layer are formed sequentially on one side of a plastic film in the transfer film, in which the mold release layer and the easy adhering resin layer are formed in alternate lines without lapping each other between the plastic film and the exfoliation layer; wherein the mold release layer adheres to the plastic film and exfoliates from the exfoliation layer, and the easy adhering layer adheres to both the plastic film and the exfoliation layer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a decorative transfer film for decorating a molded product by an in-mold molding transfer method or a thermal transfer method, and when the transfer film is slit so as to have an appropriate width for transfer processing. The present invention relates to a transfer film that does not cause so-called foil spillage.

Conventionally, a decorative transfer film comprising a plastic film, a release layer, a release layer, a decorative layer, and an adhesive layer is known. The transfer film is applied to a transfer object (a release layer, a decorative layer). , And the adhesive layer), the design property is imparted to the transfer object.
In general, the transfer film is uneconomical when it is produced with a long roll wound having a necessary width in accordance with the width of the transfer object in order to give a desired design to the transfer object. After producing by long roll winding, slitting is usually performed so as to obtain a long roll winding having a width suitable for transfer processing, that is, a necessary width corresponding to the width of the transfer object.
A transfer film is known that prevents so-called foil spillage (a phenomenon in which a transfer layer on a portion hit by a cutter blade peels) when slitting the transfer film.
In Patent Document 1, an easy adhesion treatment such as a corona treatment method or an anchor coating method is applied to one surface of a base film (plastic film), and a release layer has a slit portion on the easy adhesion treatment surface. A release layer that is peeled off from the release layer but not peeled from the base film is provided on the entire surface of the base film on which the release layer is provided, and a handle layer (decoration layer) is provided on the release layer. ), A transfer foil (transfer film) in which an adhesive layer (adhesive layer) is sequentially formed is described.
In the transfer foil described in Patent Document 1, the release layer is formed on the easy-adhesion treated surface excluding the slit portion, so that the part where the release layer is formed (non-slit part) and the release layer are formed. By clearly distinguishing a portion (slit portion) that has not been made, it is intended to prevent foil spillage by slitting only the slit portion with a cutter blade.

Japanese Patent Laid-Open No. 11-58584

However, the transfer foil described in Patent Document 1 has the following drawbacks.
(1) In the transfer foil described in Patent Document 1, the easy adhesion treatment is performed on the entire surface of the plastic film, and particularly when the easy adhesion treatment is an anchor coat (easy adhesion resin layer), There are cases where uneven coating occurs in the anchor coat. Therefore, not only the release layer on the anchor coat but also the transfer layer such as the release layer on the release layer, unevenness due to the effect of the uneven coating occurs. There is also a problem that a molded product obtained by transferring the toner to the transfer object frequently causes appearance defects due to the unevenness.
(2) Further, when the surface treatment such as corona treatment is applied to the easy adhesion treatment instead of the anchor coat, the effect of the easy adhesion treatment may not last for a long time, although there is no problem of the unevenness. In some cases, foil spillage could not be prevented when slitting after storing for a long time.
(3) Employing means such as coloring either the slit part or the non-slit part with a colorant such as a dye in order to prevent the cutter blade from coming off the slit part when slitting. However, when the transfer foil described in Patent Document 1 is colored on the anchor coat or the release layer, the colored anchor coat or release layer is formed when the handle layer is formed on the release layer. This hinders color matching (toning) of the pattern layer, and as a result, there is a problem that a desired design cannot be imparted to the transfer object.
(4) In addition, when the release layer is colored with a colorant such as a dye, the adhesion between the plastic film and the release layer may deteriorate due to the influence of the colorant, and the release layer may be peeled off from the plastic film. It was. Furthermore, when the transfer foil is transferred to the transfer object, the colorant is transferred to the surface of the release layer, which may adversely affect the performance of the release layer, such as hard coat properties.

  The present invention eliminates all of the above-mentioned drawbacks and, in addition to preventing foil spills, the transfer layer does not cause unevenness due to the easy-adhesive resin layer, reduces the adhesion of the release layer, and releases the surface of the release layer. The present invention provides a transfer film that has no problem of transfer of the colorant to the toner and that can be easily registered at the time of slitting.

[1] The present invention relates to a transfer film in which at least a release layer, a decoration layer, and an adhesive layer are sequentially formed on one side of a plastic film. The transfer film is in close contact with the plastic film and between the release layer and the release layer. A foil spill-preventing transfer film characterized in that the release layer and the easy-adhesive resin layer that adheres to both the plastic film and the release layer are both linear and alternately formed so as not to overlap each other. is there.
[2] The present invention is the foil spill prevention transfer film according to the above [1], wherein the easily adhesive resin layer is colored with a colorant.
[3] The present invention is the foil spill prevention transfer film according to the above [1] or [2], wherein the decorative layer includes at least one of a colored layer, a printed layer, and a metal thin film layer.
[4] The present invention is the foil spill prevention transfer film according to the above [3], wherein at least one of a colored layer, a printed layer, and a metal thin film layer is partially formed.
[5] The present invention is the foil spill prevention transfer film according to the above [3], wherein the decorative layer is partially formed.
[6] The present invention provides the above-mentioned [1], wherein the gap between the release layers and the easy-adhesion resin layer formed in a line and alternately so as not to overlap each other is 0 to 5 mm. The foil spill-preventing transfer film according to [5].

1) Since the easy adhesion resin layer is not formed between the plastic film and the release layer, the foil spill prevention transfer film of the present invention does not cause unevenness in the release layer due to uneven coating of the easy adhesion resin layer. In addition to the transfer layer formed on the release layer, appearance defects due to the unevenness do not occur in molded products obtained by transferring the transfer film to an object to be transferred.
2) Since the easy-adhesion resin layer is not a surface treatment such as corona treatment but a thin film made of resin, the effect of the easy-adhesion treatment (adhesion between the easy-adhesion resin layer, the plastic film, and the release layer) is long. Even when the foil spill prevention transfer film of the present invention is stored for a long period and slit for a long period of time, foil spillage can be prevented.
3) At the time of slitting, the cutter blade has a slit portion (a part on which the peeling layer, the decorative layer, and the adhesive layer are formed on the easy-adhesive resin layer, and when the decorative layer is not formed on the slit portion, the easy-adhesive resin layer The upper part of the release layer and the part where the adhesive layer is formed) are not colored, and the easy-adhesive resin layer is colored, so that the release layer is not colored. When the decorative layer is formed on the release layer, the color matching (toning) of the decorative layer is facilitated. As a result, the productivity of the foil spill prevention transfer film of the present invention is improved. Thus, it is possible to easily give a desired design to the transfer object.
4) Since the easy-adhesion resin layer is colored with the colorant and not the release layer, the adhesion between the plastic film and the release layer is deteriorated due to the influence of the colorant, and the release layer is peeled off from the plastic film. There is nothing. Furthermore, when transferring the foil spill prevention transfer film of the present invention, the colorant does not transfer to the surface of the release layer and does not adversely affect the performance of the release layer, such as hard coat properties.

The foil spill prevention transfer film of the present invention is the same as the above-mentioned general decorative transfer film, in order to give a desired design to the transfer object, the length of the necessary width according to the width of the transfer object. Since it is uneconomical to produce with a roll roll, once it has been produced with a wide roll roll, a width suitable for transfer processing, that is, a roll roll with a necessary width according to the width of the transfer object Thus, foil spillage can be prevented when slitting.
Here, the foil spill prevention transfer film of the present invention will be described with reference to FIGS.
FIG. 1 is a perspective view of a foil spill-preventing transfer film A of the present invention wound with a wide width and a long roll, and a part of the transfer film, and the foil spill-preventing transfer film A of the present invention is a plastic film. A transfer layer forming portion T on which a release layer, a release layer, a decoration layer, and an adhesive layer are formed, an easily adhesive resin layer, a release layer, and, if necessary, a decoration layer (a decoration layer is formed on the entire surface of the transfer film) Etc.) and a slit portion S in which an adhesive layer is formed are alternately formed in a linear manner.
As described above, FIG. 1 shows a wide width in which a plurality of transfer layer forming portions T (two rows in FIG. 1) are provided by alternately forming the transfer layer forming portions T and the slit portions S linearly. 2 shows a foil spill prevention transfer film of the present invention wound by a long roll.
As described above, the transfer layer forming portion T is a portion where a release layer, a release layer, a decoration layer, and an adhesive layer are formed on a plastic film, and the foil spill prevention transfer film of the present invention is used as a transfer object. This is a part that transfers the transfer layer (peeling layer, decoration layer, and adhesive layer) on the release layer to the transfer object by transferring, and imparts a desired design to the obtained molded product.
Further, as described above, the slit portion S refers to a portion where an easy-adhesive resin layer, a release layer, and, if necessary, a decorative layer and an adhesive layer are formed on a plastic film. By slitting this portion with a cutter blade, It is a part that plays a role in preventing foil spillage.
The foil spill prevention transfer film of the present invention can produce a transfer film in which the transfer layer forming portion is wound in a long roll for each row without slitting the foil by slitting the slit portion S with a cutter blade. .

FIG. 2 is a partially enlarged cross-sectional view showing an example of a foil spill prevention transfer film according to the present invention in which a decorative layer is formed on the entire surface. The release layer 4, the decorative layer 5, and the adhesive layer are bonded to one side of the plastic film 1. The layers 6 are sequentially formed on the entire surface, and the release layer 2 and the easy-adhesive resin layer 3 are both formed linearly and alternately so as not to overlap each other between the plastic film 1 and the release layer 4. It shows that.
FIG. 2A shows an example in which there is no gap between the release layer and the easy-adhesion resin layer, and the transfer layer forming portion T and the slit portion S are formed adjacent to each other.
FIG. 2B is a diagram showing an example in which there is a gap x between the release layer and the easy-adhesion resin layer, and the transfer layer forming portion T and the slit portion S are formed across the gap x.

FIG. 3 is a partially enlarged cross-sectional view showing an example of a foil spill prevention transfer film according to the present invention in which a decorative layer is partially formed. The peeling layer 4 is provided on one side of the plastic film 1 and the decorative layer is provided on the entire surface. 5 is the transfer layer forming portion only, and the adhesive layer 6 is sequentially formed on the entire surface. Between the plastic film 1 and the release layer 4, the release layer 2 and the easy-adhesive resin layer 3 are both linear and mutually FIG. 5 is a view showing an example in which there is a gap x between the release layer and the easy-adhesion resin layer.
Similarly to FIG. 2B, the transfer layer forming portion T and the slit portion S are formed with the gap x interposed therebetween.

The plastic film used for the foil spill prevention transfer film of the present invention can be any plastic film conventionally used for transfer films, such as polyethylene terephthalate film, polyethylene naphthalate film, acrylic film, polyimide film, polyamideimide. Various plastic films such as a film, a fluorine film, a polyethylene film, and a polypropylene film can be used.
In addition, for the purpose of improving design properties, the release layer side of the plastic film may be subjected to uneven processing such as hairline processing, embossing processing, mat processing, etc. The surface of the transfer part of the molded product obtained by transferring the product to a transfer material such as a plastic substrate has an uneven shape, and the finished molded product can be made more excellent in design.

In the foil spill prevention transfer film of the present invention, the release film that adheres to the plastic film and peels from the release layer, and the easy-adhesive resin layer that adheres to both the plastic film and the release layer are both linear on the plastic film. And are formed alternately so as not to overlap each other.
As described above, by alternately forming the release layer and the easy-adhesion resin layer on the plastic film so as not to overlap each other, the above-described effect of the present invention, that is, the transfer layer resulting from coating unevenness of the easy-adhesion resin layer. In order to register the slits, the release layer is not colored and the easy-adhesive resin layer is colored, so a decorative layer is formed on the release layer formed on the release layer. In this case, the color matching (toning) of the decorative layer is facilitated. Furthermore, the adhesion between the plastic film and the release layer is deteriorated, or the colorant is transferred to the surface of the release layer. Excellent effects such as no adverse effects on performance can be exhibited.

The release layer is made of a resin, and when transferring the foil spill prevention transfer film of the present invention to a transfer material such as a plastic substrate and peeling the plastic film, it is peeled off from the transfer material together with the plastic film. By transferring the transfer layer (peeling layer, decoration layer, and adhesive layer) formed on the release layer to the transfer object, design properties, hard coat properties, etc. are imparted to the transfer object. Is.
Therefore, the release layer needs to have a release property that adheres to the plastic film and peels off from the release layer described later.
In addition, as described above, the foil spill prevention transfer film of the present invention colors the easy-adhesive resin layer with a colorant so as to prevent the cutter blade from coming off the slit portion when slitting. The mold layer is not colored.

  As described above, the release layers are linearly formed and alternately formed so as not to overlap the easy-adhesive resin layer, but the release layer is a transfer layer formed on the release layer. Therefore, the width of the line is appropriately determined according to the desired design.

  As the resin used for the release layer, a resin such as a melamine resin or an acrylic resin can be used.

  The thickness of the release layer may be appropriately determined depending on the type of resin in the release layer, the type of resin in the release layer, and the like, but is approximately 0.5 to 1.5 μm.

  As a method for forming the release layer, conventionally known coating methods such as a gravure coating method, a reverse coating method, and a die coating method can be used.

The easy-adhesion resin layer formed on the foil spill prevention transfer film of the present invention is a wide, long roll of the foil spill prevention transfer film of the present invention provided with a plurality of transfer layer formation portions, and the transfer layer formation portion has one row. When slitting the transfer film so as to be wound into a long roll, a part to be slit by a cutter blade (slit part) together with a release layer on the easy-adhesive resin layer, if necessary a decoration layer and an adhesive layer It is.
The easy-adhesion resin layer can improve the adhesion between the plastic film and the release layer formed on the easy-adhesion resin layer, so by slitting the slit part where the easy-adhesion resin layer is formed, The foil spill prevention transfer film of the invention can prevent foil spillage.
The easy-adhesion resin layer is made of a resin, and as described above, is formed in a linear shape and is alternately formed so as not to overlap the release layer.

The easy-adhesion resin layer may be an easy-adhesion resin layer colored by mixing a colorant such as a dye or pigment into the resin.
As described above, the foil spill prevention transfer film of the present invention is such that the release layer and the easily adhesive resin layer are both linearly formed and alternately formed so as not to overlap each other, thereby coloring the easily adhesive resin layer. Since it is not necessary to color the release layer, color matching (toning) is facilitated when forming a decorative layer on the release layer formed on the release layer, The adhesion between the plastic film and the release layer is deteriorated due to the influence of the colorant, and the release layer does not peel from the plastic film.
Further, when transferring the foil spill prevention transfer film of the present invention, the colorant is transferred to the surface of the release layer, and does not adversely affect the performance of the release layer, such as hard coat properties.

The easy-adhesion resin layer needs to be in close contact with both the plastic film and the release layer in order to prevent foil spillage.
Therefore, the resin used for the easy-adhesion resin layer is not particularly limited as long as it can achieve the above-described purpose, and resins such as polyester resins, acrylic resins, and urethane resins can be used.
The resin may be either a thermoplastic resin or a thermosetting resin, but in view of adhesion with a plastic film and a release layer for the purpose of preventing foil spillage, a thermosetting resin is preferable, and the resin It is more preferable to mix a curing agent such as isocyanate with a two-component curable thermosetting resin.

  The thickness of the easy-adhesion resin layer may be appropriately determined depending on the type of resin of the easy-adhesion resin layer, the type of resin of the release layer, and the like, but is approximately 0.05 to 1 μm.

  Conventionally known coating methods such as a gravure coating method, a reverse coating method, and a die coating method can be used as a method for forming the easily adhesive resin layer.

The easy adhesion resin layer is formed in a linear shape as described above.
The width of the line is not particularly limited, but if it is too narrow, if the cutter blade is displaced slightly even when slitting, problems such as slitting the transfer layer forming part instead of the slit part will occur, depending on the case It is not preferable because the workability of the slit is deteriorated, for example, it is necessary to stop the machine or slow down the slitting speed in order to prevent displacement.
Also, if the line width is too wide, the width of the release layer, that is, the width of the transfer layer forming portion, becomes relatively narrow, or the width of the release layer, that is, the width of the transfer layer forming portion is secured. This is uneconomical because the width of the plastic film needs to be increased more than necessary.
From the above, the line width of the easily adhesive resin layer is preferably 5 to 40 mm.

As described above, the easy-adhesion resin layer is a wide, long roll-wrapped foil spill prevention transfer film provided with a plurality of transfer layer forming portions, and the transfer layer forming portion has a long roll winding for each row. It becomes the part which slits so that it may become.
The easy-adhesion resin layer formed linearly and the release layer formed linearly may be formed without any gaps as shown in FIG. 2-a, or as shown in FIG. 2-b. Further, it may be formed with a certain gap x (note that the release layer, the decorative layer, and the adhesive layer formed on the gap x do not belong to any of the transfer layer forming portion and the slit portion). .
Therefore, when the easy-adhesion resin layer and the release layer are formed to overlap, that is, when the release layer is formed to overlap a part of the easy-adhesion resin layer, The case where the easy-adhesion resin layer is formed so as to overlap the portion is not included in the present invention.
Thus, when the easy-adhesion resin layer and the release layer are formed so as to overlap with each other, the overlapped portion naturally becomes a step, and the step causes a similar step in the release layer formed thereon.
As a result, when the foil spill prevention transfer film of the present invention is wound in a long roll, the stepped portions overlap each other so that the stepped portion of the transfer film becomes a winding shape, or in some cases blocking occurs. To do.
Furthermore, when a printed layer or a colored layer is formed as a decorative layer described later, particularly as a decorative layer, the printed layer or the colored layer cannot be formed well on the stepped portion, and the printed layer or the colored layer around the stepped portion cannot be formed. There arises a problem that the color becomes light.

Even if the gap is provided too large, it is not preferable because only unnecessary portions increase, which is uneconomical.
Accordingly, the gap between the easily adhesive resin layer and the release layer is preferably 0 to 5 mm.

The release layer to be formed on the foil spill prevention transfer film of the present invention is formed on the entire surface of the transfer film from at least the release layer and the easy-adhesion resin layer, and after transferring the transfer film to the transfer object, It is formed on the outermost surface of the transfer layer formed on the transfer object.
And it plays the role which protects the decoration layer etc. in the said transfer layer from a crack.

Accordingly, the resin used for the release layer is not particularly limited as long as it can protect the decorative layer and the like from scratches, and resins such as polyester resins, acrylic resins, and urethane resins can be used.
However, the release layer is often formed for the purpose of imparting hard coat properties. In such a case, a thermosetting melamine resin, an acrylic resin, an ultraviolet curable acrylic resin, Resins having hard coat properties such as urethane resins and acrylic polyol resins can be used.

  The thickness of the release layer may be appropriately determined depending on the type of resin of the release layer, the purpose of forming the release layer, and the like, but is approximately 0.5 to 10 μm.

  As a method for forming the release layer, conventionally known coating methods such as a gravure coating method, a reverse coating method, and a die coating method can be used.

Further, a primer layer made of a resin may be formed between the release layer and the decorative layer described later for the purpose of improving the adhesion between the two layers.
The type and thickness of the resin for the primer layer may be appropriately determined depending on the type and thickness of the resin for the release layer, the type of the decorative layer (printing layer, colored layer, metal thin film layer, etc.), the thickness, and the like.

The decorative layer formed on the foil spill prevention transfer film of the present invention includes at least one of a colored layer, a printed layer, and a metal thin film layer.
Therefore, the decoration layer may be composed of only one layer among the colored layer, the printing layer, and the metal thin film layer, or may be composed of a combination of two necessary layers or three layers.

Of course, the decorative layer may include layers other than the metal thin film layer, the colored layer, and the printed layer.
For example, when a metal thin film layer, a colored layer, a protective layer made of a resin for protecting the printed layer, or two or three of the metal thin film layer, the colored layer, and the printed layer are formed, the adhesion between the layers There is also a primer layer made of resin, which is formed for the purpose of improving the properties.
What is necessary is just to determine suitably the combination of the layer which comprises a decoration layer, and the order to form according to a desired design.

Further, the decorative layer may be formed on the entire surface of the foil spill prevention transfer film of the present invention, or may be partially formed.
Here, when the decoration layer is formed on the entire surface of the foil spill prevention transfer film of the present invention, the decoration layer has a gap between the transfer layer forming portion, the slit portion, or the release layer and the easy-adhesion resin layer. In some cases, it means that it is formed on any of the release layers on it.
In addition, when the decorative layer is partially formed of the foil spill prevention transfer film of the present invention, it means that it is formed at least in a part of the transfer layer forming part, in addition to the transfer layer forming part, If there is a gap between the slit portion or the release layer and the easy-adhesive resin layer, it is of course included when the gap is also formed on a part of the release layer above it.
For example, even when the decorative layer is formed on the entire surface of the foil spill prevention transfer film of the present invention, or even when the decorative layer is partially formed on the transfer film, it is formed on the entire surface of the transfer layer forming portion. In such a case, the design of the decorative layer can be imparted to the entire transfer layer of the molded product obtained by transferring the transfer film to the transfer object, and the decorative layer is formed in a part of the transfer layer forming portion. If it is, the design can be imparted to a part of the transfer layer of the molded product.

In addition, at least one of a colored layer, a printed layer, and a metal thin film layer may be partially formed.
Here, the meaning of being partially formed means that it is formed at least in a part of the transfer layer forming part as described above. In the case where there is a gap between the adhesive resin layers, a case where the gap is also formed on a part of the release layer above is naturally included.
As an example in which at least one of a colored layer, a printed layer, and a metal thin film layer is partially formed, when the decorative layer is composed of a colored layer and a metal thin film layer, the colored layer is the foil spill prevention transfer film of the present invention. In the case where the metal thin film layer is formed only on the transfer layer forming portion (entire surface of the transfer layer forming portion), the decoration layer is composed of three layers of a colored layer, a printed layer, and a metal thin film layer. The colored layer is formed on the entire surface of the foil spill prevention transfer film of the present invention, the metal thin film layer is formed only on the transfer layer forming portion (the entire surface of the transfer layer forming portion), and the printing layer is formed on a part of the transfer layer forming portion. An example is given.

The metal thin film layer imparts metallic luster to the foil spill prevention transfer film of the present invention and a molded product obtained by transferring the transfer film.
The metal thin film layer is not particularly limited as long as it is a metal thin film layer used for a general decorative transfer film. Aluminum thin film layer, tin thin film layer, chromium thin film layer, nickel thin film layer, silver thin film layer, copper thin film A conventionally known metal thin film layer such as a layer can be used.
What is necessary is just to determine suitably the kind and thickness of a metal thin film layer with a desired design.
As a method for forming the metal thin film layer, a conventionally known method such as a vacuum vapor deposition method, a sputtering vapor deposition method, or a CVD vapor deposition method can be used.

The colored layer imparts a desired color to the foil spill prevention transfer film of the present invention and a molded product obtained by transferring the transfer film.
The colored layer is composed of a resin and a colorant such as a dye or a pigment. As the resin and colorant to be used, conventionally known resins and colorants used for general decorative transfer films can be used.
As a method for forming the colored layer, conventionally known coating methods such as a gravure coating method, a reverse coating method, and a die coating method can be used.

The printed layer imparts a desired pattern to the foil spill prevention transfer film of the present invention and a molded product obtained by transferring the transfer film.
The printing layer is formed by using a general printing ink composed of a resin and a colorant using a method such as a gravure coating method or a screen printing method.
A plurality of print layers may be formed according to a desired pattern.

The decorative layer may be a desired design by appropriately combining the metal thin film layer, the colored layer, the printed layer, and the like.
For example, if it is a decorative layer in which a colored layer and a metal thin film layer are sequentially formed from the peeling layer side, a design in which a metallic luster is colored on the surface of a molded product obtained by transferring the foil spill prevention transfer film of the present invention (For example, the color of the colored layer colored yellow and the silver metallic luster of the aluminum thin film layer combine to give a gold-colored design).
In addition, if the print layer is formed in a pattern from the release layer side and the metal thin film layer is formed thereon, the surface of the molded product obtained by transferring the foil spill prevention transfer film of the present invention, The design which exhibits the metallic luster on which pattern-like printing was given can be provided.
As described above, the decorative layer can be provided with a variety of designs by appropriately combining a metal thin film layer, a colored layer, a printed layer, and the like.

When the decorative layer is partially formed, or when at least one of the colored layer, the printed layer, and the metal thin film layer in the decorative layer is partially formed, the above-described easily adhesive resin layer And a step similar to that produced when the release layers are formed to overlap.
However, the level difference caused by the decorative layer is a level difference that occurs when the easy adhesion resin layer and the release layer are overlapped even when the foil spill prevention transfer film of the present invention is rolled long. In contrast, since the step portion does not overlap at the same position, the step portion does not cause winding or blocking.

The adhesive layer to be formed on the foil spill prevention transfer film of the present invention is made of a resin, and adheres the material to be transferred and the transfer layer, and is formed on the entire surface of the foil spill prevention transfer film of the present invention.
The type of resin used for the adhesive layer may be determined appropriately according to the material of the transfer object, and resins such as vinyl chloride resin, vinyl chloride vinyl acetate copolymer resin, acrylic resin, and polyester resin are used. it can.

The thickness of the adhesive layer may be appropriately determined depending on the type of resin of the adhesive layer, the material of the transfer object, and the like, but is approximately 0.5 to 5 μm.
As the method for forming the adhesive layer, conventionally known coating methods such as gravure coating, reverse coating, and die coating can be used.

[Example 1]
An easy-adhesion resin layer having a thickness of 0.2 μm comprising a polyester resin, an isocyanate, and a yellow dye on one side of a polyethylene terephthalate film having a thickness of 50 μm, a width of 670 mm, and a length of 2,000 m, and a long roll wound polyethylene terephthalate film. 3 lines in a line with a width of 20 mm, and two release layers of 1 μm in thickness made of melamine resin by gravure coating, alternately in a width direction so that they do not overlap each other. From the end, a yellow-colored easy-adhesion resin layer, a release layer, a yellow-colored easy-adhesion resin layer, a release layer, and a yellow-colored easy-adhesion resin layer were formed.
At this time, the gap between the easily adhesive resin layer and the release layer was set to 0.3 mm.
Next, a 5 μm-thick release layer made of an acrylic resin is formed on the entire surface of the easy-adhesion resin layer and the release layer by a reverse coating method, and a thickness of the acrylic resin is made by a reverse coating method. A 5 μm primer layer was formed on the entire surface.
Furthermore, a protective layer having a thickness of 1 μm made of acrylic resin and isocyanate is formed on the entire surface of the primer layer by a gravure coating method as a decoration layer, and a white printing ink is used on the protective layer by a gravure coating method. The white printed layer was formed only on the part where the release layer was formed.
Furthermore, a 1 μm thick adhesive layer made of an acrylic resin was formed on the entire surface of the decorative layer by a gravure coating method to produce a foil spill prevention transfer film of the present invention.

[Example 2]
A foil spill prevention transfer film of the present invention was produced in the same manner as in Example 1 except that a 50 nm thick aluminum thin film layer was formed on the entire surface by vacuum deposition instead of the white printed layer of Example 1. .

Comparative example

  Instead of the polyethylene terephthalate film, the easily adhesive resin layer, and the release layer of Example 1, a 0.2 μm thick polyester-based resin is processed by in-line easy adhesion treatment (by simultaneously coating the resin with the plastic film). The surface of the plastic film is made of melamine resin and yellow dye by gravure coating on the surface of easy adhesion of polyethylene terephthalate film with a thickness of 50μm, width of 670mm, and length of 2000m. Except that the release layer colored in yellow with a thickness of 1 μm was formed in two lines with a width of 280 mm, and the interval between the release layer and the release layer was 20 mm, the same as in Example 1, A transfer film was formed.

  The following tests were performed on the foil spill prevention transfer films of the present invention of Examples 1 and 2 and the transfer films of Comparative Examples to compare the performance.

1. Foil spill evaluation test (evaluation data)
One roll of each of the above-described wide and long roll wound Examples 1 and 2 of the present invention foil spill prevention transfer film and a comparative transfer film was prepared as an evaluation material.
(Evaluation methods)
In the slitting machine, the slit portion (for the foil spill-preventing transfer film of Example 1 according to the present invention, a part where an easily adhesive resin layer, a release layer, a primer layer, and an adhesive layer are formed on a polyethylene terephthalate film, Example 2 The transfer film of the present invention of the present invention is a part where an easily adhesive resin layer, a release layer, a primer layer, a decorative layer, and an adhesive layer are formed on a polyethylene terephthalate film, and a polyethylene terephthalate film for a transfer film of a comparative example Set the round blades (circular slit blades) adjusted in position so that the slits (parts on which the release layer, primer layer, and adhesive layer are formed) can be slit in three locations, and adhere the slits. Slit from the layer side.
The slit portion was evaluated visually, and a transfer layer that was not peeled off from the polyethylene terephthalate film or the easy-adhesive resin layer was marked with ◯, and a portion that was partially peeled was marked with ×.
(Evaluation results)
Table 1

2. Unevenness evaluation test for easy-adhesion resin layer (easy-adhesion treatment)
One roll of each of the foil spill-preventing transfer films of Examples 1 and 2 of the present invention, which was slit in the above “foil spill evaluation test”, was prepared as an evaluation material.
(Evaluation methods)
As a result of visually evaluating the foil spill prevention transfer film of the present invention of Examples 1 and 2 and the transfer film of the comparative example, it was found that no unevenness due to coating unevenness occurred, and unevenness occurred. What was had was made into x.
(Evaluation results)
Table 1

3. Dye transferability evaluation test (evaluation data)
One roll each of the foil spill prevention transfer film of the present invention of Examples 1 and 2 of the present invention and the transfer film of the comparative example after slitting in the “foil spill evaluation test” is prepared, and is a transferred object. Each product was thermally transferred to a transparent acrylic plate, and each molded product was prepared as an evaluation material.
(Evaluation methods)
Visually evaluate the surface of the transfer layer of each of the above molded products. The surface of the transfer layer is not yellowish and the dye is not transferred. The transfer layer surface is yellowish. The case where the dye was transferred was marked with x.
(Evaluation results)
Table 1

FIG. 2 is a perspective view of a wide and long roll wound foil spill prevention transfer film A according to the present invention, and a part of the transfer film wound, with two transfer layer forming portions T and three linear slit portions S. Both the books and the lines are formed alternately so as not to overlap each other. 1 is a partially enlarged cross-sectional view showing an example of a foil spill prevention transfer film according to the present invention in which a decoration layer is formed on the entire surface. It is formed on the entire surface, and between the plastic film 1 and the release layer 4, the release layer 2 and the easy-adhesion resin layer 3 are both formed in a line and alternately so as not to overlap each other. 2A is a diagram showing an example in which there is no gap between the release layer and the easy-adhesion resin layer, and FIG. 2B is a diagram showing an example in which there is a gap x between the release layer and the easy-adhesion resin layer. It is. In FIG. 2A, the transfer layer forming portion T and the slit portion S are formed adjacent to each other, and in FIG. 2B, the transfer layer forming portion T and the slit portion S are formed across the gap x. Has been. 1 is a partially enlarged cross-sectional view showing an example of a foil spill-proof transfer film according to the present invention in which a decorative layer is partially formed, with a release layer 4 on the entire surface of the plastic film 1 and a decorative layer 5 on a transfer layer; The adhesive layer 6 is sequentially formed on the entire surface only in the forming portion, and the release layer 2 and the easily adhesive resin layer 3 are both linear and do not overlap each other between the plastic film 1 and the release layer 4. FIG. 5 is a diagram showing an example in which there is a gap x between the release layer and the easy-adhesion resin layer. The transfer layer forming portion T and the slit portion S are formed with the gap x interposed therebetween.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Plastic film 2 Release layer 3 Easy adhesion resin layer 4 Peeling layer 5 Decoration layer 6 Adhesion layer 10 Transfer layer A Foil spill prevention transfer film S of this invention T Slit part T Transfer layer formation part x Release layer and easy adhesion resin layer Gap

Claims (6)

  In a transfer film in which at least a release layer, a decorative layer, and an adhesive layer are sequentially formed on one side of a plastic film, a release layer that adheres to the plastic film and peels from the release layer, and the plastic A foil spill-preventing transfer film characterized in that easy-adhesive resin layers that are in close contact with both the film and the release layer are linearly formed alternately so as not to overlap each other.   2. The foil spill prevention transfer film according to claim 1, wherein the easily adhesive resin layer is colored with a colorant.   The foil spill-proof transfer film according to claim 1 or 2, wherein the decorative layer comprises at least one of a colored layer, a printed layer, and a metal thin film layer.   4. The foil spill-proof transfer film according to claim 3, wherein at least one of a colored layer, a printed layer, and a metal thin film layer is partially formed.   The foil spill-proof transfer film according to claim 3, wherein the decorative layer is partially formed.   6. The foil spill prevention transfer according to claims 1 to 5, wherein the release layers formed in a line and alternately so as not to overlap each other, and the gap between the lines of the easily adhesive resin layer is 0 to 5 mm. Film.

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