JP2007038421A - Transfer film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To inexpensively provide a transfer film, through the bonding of which to a body to be decorated, the decorativeness by a printing layer and a deposit is highly demonstrated on the subject that the printing layer is highly accurately registered and the deposit is formed inexpensively. <P>SOLUTION: The transfer film has a synthetic resin base material film, the printing layer peelably laminated onto the base material film and the deposit, which is laminated by registering with the predetermined portion in the printing layer under a constitution that the predetermined portion is formed with a printing ink including an anchor coating agent and the deposit is directly bondingly laminated to the predetermined portion. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a transfer film used for decoration.

  As a method for decorating the surface of a molded product made of synthetic resin, there is a method of attaching a label or using a transfer film. For example, Patent Document 1 describes an invention relating to a transfer film, and FIG. 8 is a typical example of a conventional transfer film described in Patent Document 1. As shown in FIG. 8, the transfer film 101 basically includes a base film 102, a release layer 106, a print layer 112, and an adhesive layer 107.

Then, the transfer film 101 is heated and pressed by an in-mold method, a hot stamp method, a hot roll method, or the like, and is adhered to the surface of the molded product by the adhesive layer 107, and the printed layer 112 is transferred, and its decorating properties are exhibited. The The base film 102 is peeled off together with the peeling layer 106 and removed.
JP 2004-90313 A

The inventors of the present application have further developed a metal vapor deposition layer on the printed layer to add a metallic decoration to the printed layer.
Among these, it is difficult to directly form a vapor deposition layer only on a printed layer formed discontinuously in a dot shape, for example, instead of forming a printed layer over the entire surface of the decorative region. In this case, an anchor layer that exhibits the function of adhering and fixing the vapor deposition layer to the print layer is first laminated on the print layer portion, and then the vapor deposition layer is formed over the entire surface of the decorative region, and then washed with alkali to be anchored. A complicated process of removing the vapor-deposited layer where there is no layer, that is, where the printed layer is not formed, must be employed.

  Here, in the process as described above, an anchor layer forming process is required. Furthermore, if the anchor layer is slightly misaligned with respect to the printed layer, the high degree of decorativeness is lost, so the alignment is highly accurate. It needs to be realized, resulting in low productivity and high decoration costs.

  An object of the present invention is to solve the above-mentioned problems in a transfer film, and a problem is a layer configuration for aligning a printed layer with high accuracy and forming a vapor deposition layer at a low cost. The objective is to provide a transfer film that can be adhered to a decorative body and that can exhibit a high degree of decoration by a printed layer and a vapor-deposited layer at a low cost.

Among the present invention that solves the above technical problem, the means of the invention according to claim 1 is:
In transfer film,
It has a base film made of synthetic resin, a printed layer that is detachably laminated on the base film, and a vapor deposition layer that is aligned and laminated on a predetermined portion of the printed layer, and the predetermined portion is anchor-coated. It was formed with printing ink containing an agent, and a configuration in which a vapor deposition layer was directly adhered and laminated on this predetermined portion,
It is in.

The transfer film having the above-described structure according to claim 1, wherein a vapor deposition layer is formed by metal vapor deposition over the entire decoration region including a predetermined portion of the printing layer formed with a printing ink containing an anchor coating agent, and then predetermined by alkali cleaning. By the process of removing the vapor deposition layer of a portion other than the portion, a decorative layer portion in which the predetermined portion of the printed layer and the vapor deposition layer overlap can be formed.
That is, a predetermined portion is formed with a printing ink containing an anchor coating agent, and the vapor deposition layer is directly bonded to the predetermined portion and laminated, so that the anchor layer is previously formed on the predetermined portion before forming the vapor deposition layer. The step of laminating the layers can be omitted, and there is no need to align the anchor layer with respect to the predetermined portion, so that the decoration step can be performed with high productivity and low cost.

  Since the predetermined portion of the printed layer itself has an anchor function, the vapor deposition layer formed by laminating the predetermined portion is firmly fixed to the predetermined portion, and the vapor deposition laminated on the predetermined portion by alkali cleaning. It is possible to reliably remove the deposited layer formed in other parts while leaving the layer reliably, and to superimpose the deposited layer on the predetermined printed layer part without any deviation, so that the decoration effect can be exhibited to a high degree. .

Here, in the structure of this claim, by forming all the printing layers with the printing ink containing the anchor coating agent, the vapor deposition layer can be laminated on all the printing layers to form the decorative layer. On the other hand, considering the decoration effect according to the purpose, the printing layer is partially formed with printing ink containing an anchor coat agent, so that the decoration layer only of the printing layer, and the decoration that the vapor deposition layer and the printing layer are laminated Layers can also be mixed.
In view of such a variation of the configuration, the present claims distinguish and describe the print layer and a predetermined portion of the print layer.
If further mentioning, if the anchor coat layer is previously laminated at a predetermined portion of the portion other than the portion where the printed layer is formed, the decorative layer made of the vapor deposition layer is formed by leaving the vapor deposition layer in this portion. Can also be mixed.

  The means of the invention described in claim 2 resides in that, in the invention described in claim 1, an adhesive layer that adheres to the object to be decorated with a heat-weldable adhesive is laminated on the decorative layer.

According to the above configuration of the second aspect, since the adhesive layer is formed by a hot-melt adhesive such as a hot melt type, the adhesive layer can be partially laminated on the decorative layer portion. It is not necessary to form an adhesive layer in a portion without a decorative layer, and the surface properties of the object to be decorated can be exposed clearly.
Here, the decorative layer referred to in the present invention includes a single printed layer, a single vapor deposited layer, and a laminate in which a vapor deposited layer is laminated on the printed layer.

  Here, for the formation of the adhesive layer, there are a method of coating a pressure-sensitive adhesive or a hot-melt type adhesive, a method of laminating the adhesive film as a whole, etc. It is difficult to partially laminate the portion where the decorative layer is formed. In addition, the pressure-sensitive adhesive can be partially laminated like hot-melt type adhesives, but since it deforms even at room temperature, the decorative layer is displaced or peeled off during use, and the decorative properties are impaired. End up.

  According to a third aspect of the present invention, in the invention according to the first or second aspect, the printed layer is formed in a thick shape.

  According to the above-described configuration of the third aspect, for example, silk printing can be repeated several times to make the printing layer thick, but by forming the printing layer in this way, the printing layer is covered. It can be raised more convexly from the decorating surface of the decorating body, and a metallic decoration by the vapor deposition layer can be added to exhibit unique decorating properties.

  The means of the invention described in claim 4 is that, in the invention described in claim 1, 2 or 3, the surface of the printed layer on the base film side is covered with a protective layer.

  According to the above configuration of the fourth aspect, the printed layer can be reliably prevented from being scratched or peeled off by the protective layer.

  The invention according to claim 5 is the invention according to claim 1, 2, 3 or 4, wherein the base film is made of a shrink film, and the transferability to the curved surface of the object to be decorated is improved. is there.

  By the said structure of Claim 5, making a base film into a shrink film, this shrinks this base film by heating, and makes a transfer film adhere to the curved surface part of a to-be-decorated body closely without sticking. It is possible to transfer and form the decorative layer neatly on the curved surface portion by hot stamping, heat roll or the like.

The present invention has the above-described configuration, and has the following effects.
In the first aspect of the present invention, the anchor layer is formed by forming a predetermined portion of the printing layer with a printing ink containing an anchor coating agent and laminating the vapor deposition layer directly on the predetermined portion. The step of laminating can be omitted, and there is no need for alignment of the anchor layer with respect to the print layer, so that a low-cost decoration step can be realized with high productivity.

  In addition, the vapor deposition layer formed by laminating on the predetermined part of the printed layer is firmly bonded and fixed to the printed layer, and the vapor deposited layer is superimposed on the predetermined part of the printed layer without any deviation, so that the decoration effect can be demonstrated to a high degree. be able to.

  In the invention according to claim 2, since the adhesive layer is formed with a hot-melt adhesive such as a hot melt type, the adhesive layer can be laminated on the decorative layer portion, and the decorative layer It is not necessary to form an adhesive layer on the part without the mark, and the surface properties of the object to be decorated can be clearly exposed.

  In the invention of claim 3, by forming the printing layer in a thick shape, the printing layer can be raised more convexly from the decorating surface of the object to be decorated, and the metallic tone by the vapor deposition layer Combined with it, it can exhibit its unique decoration.

  In the invention according to claim 4, the protective layer can surely prevent the printed layer from being damaged or peeled off.

  In the invention described in claim 5, while the transfer film is heated and shrunk, the curved surface portion of the object to be decorated can be closely adhered to the surface to be decorated, and the curved surface portion can be formed by a hot stamp, a heat roll or the like. The decoration layer can be transferred and formed neatly.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a longitudinal sectional view showing a layer structure of a first embodiment of the transfer film 1 of the present invention.
This transfer film 1 is formed by laminating a base film 2, a release layer 3, a printing layer 6, a vapor deposition layer 7 and an adhesive layer 8, and is heated by a method such as an in-mold method, a hot stamp method, or a hot roll method. The decorative layer 5 composed of the printed layer 6 and the vapor deposition layer 7 is transferred and bonded to the object to be decorated through the adhesive layer 8 by pressure bonding. The base film 2 is peeled off together with the release layer 3 and removed.
For convenience, the structure of the transfer film may be described by distinguishing the vertical direction in the state shown in the drawing.

  The base film 2 of this example is a biaxially stretched PET film, and the printing layer 6 is formed of printing ink having an anchor coating agent such as urethane or epoxy as a component. It is transparent so that the tone can be fully demonstrated.

  FIG. 2 is an explanatory view showing a method for forming the decorative layer 5 of the transfer film 1 of the first embodiment. First, a print layer 6 is formed on the release layer 3 by silk printing or the like (see FIG. 2A), and then a vapor deposition layer 7 is entirely formed by a vapor deposition apparatus (see FIG. 2B), and then washed with alkali. By the cleaning such as water cleaning, the vapor deposition layer 7 is removed while leaving the portion adhered to the printing layer 6, and the state as shown in FIG.

  Then, in the state shown in FIG. 2C, an adhesive layer 8 is formed so as to cover the vapor deposition layer 7 with a heat-weldable adhesive such as a hot melt type, and the transfer film 1 shown in FIG. Can be obtained.

Here, FIG. 7 illustrates the layer structure of the transfer film 1 of the comparative example relative to the transfer film of the first embodiment in a cross-sectional view.
In this comparative example, the printing layer 6 is made of ordinary printing ink having no anchor coating agent as a component. An anchor layer 9 is laminated on the printing layer 6, and the vapor deposition layer 7 is formed via the anchor layer 9. This is intended to be fixed to the print layer 6 portion.

  However, it is practically difficult to form the anchor layer 9 in the printed layer 6 portion by aligning with high accuracy, and the anchor layer 9 is slightly displaced as shown on the right side in FIG. In this case, the vapor deposition layer 7 remains after the alkali cleaning in response to this shift, so that the print layer 6 and the vapor deposition layer 7 are formed in a shifted state, and the high decorativeness is impaired.

  FIG. 3 shows the layer structure of the second embodiment of the transfer film of the present invention. A protective layer 4 that is an acrylic resin clear coat layer is laminated under the release layer 3, an anchor layer 9 is laminated under the vapor deposition layer 7, and an adhesive layer 8 is laminated over the entire surface.

  The structure of the transfer film 1 is to improve the durability when the decorative layer 5 composed of the printed layer 6 and the vapor deposition layer 7 is used. It is possible to reliably prevent the printed layer 6 from being damaged, and by laminating the anchor layer 9 on the vapor deposition layer 7, the adhesion of the vapor deposition layer 7 to the adhesive layer 8 can be further improved. In addition, since the alignment of the anchor layer 9 with respect to the vapor deposition layer 7 may be rough in said case, the anchor layer 9 can be laminated | stacked comparatively easily.

  FIG. 4 shows the layer structure of the third embodiment of the transfer film of the present invention, and this layer structure is the same as that of the first embodiment. It is characteristic that 6 is made thick.

  FIG. 5 shows a state where the transfer film 1 of FIG. 4 is transferred to the object to be decorated 11 by hot stamping. As shown in FIG. 5, in the transfer process, the printing layer 6 has an upwardly convex shape so as to be reversed, and the printing layer 6 appears to be lifted. The decoration effect is demonstrated.

FIG. 6 schematically shows a method of transferring the substrate film 2 to the decorating body having a curved surface using the transfer film 1 of the first embodiment shown in FIG. FIG.
The to-be-decorated body 11 is a housing 11a in which the central part of the trunk is swollen. Further, the transfer film 1 is used by continuously feeding it out of a roll shape, and the base film of the transfer film 1 has its main shrinking direction in the feed direction (refer to the direction of the white arrow in FIG. 6, hereinafter MD). It is written as direction.)

  Then, when the transferred transfer film 1 is heated so as to be blown with hot air with the heating device 12 in a state where a tension is applied so that the transferred transfer film 1 is along the body portion of the casing 11a, the base film is contracted in the MD direction. Along with this, the transfer film 1 is in close contact with the curved portion of the body portion. And the decoration layer 5 (refer also FIG. 1) which consists of the printing layer 6 and the vapor deposition layer 7 is transcribe | transferred to the housing | casing 11a with the heat roll 13 in this closely_contact | adhered state.

There is no need to use a shrink film in particular when the decorative region of the trunk of the casing is a straight cylindrical shape, but the center of the trunk is swollen like the casing 11a of FIG. If the decoration area is uneven, such as being recessed, it is difficult to make the transfer film 1 tightly adhere to the entire decoration area, and the transferred pattern is distorted due to local wrinkles. Therefore, the transferability to the curved surface can be greatly improved by using the shrink film as in this example.
Further, by arranging the apparatus in consideration of the shape of the object to be decorated and the main shrinking direction of the shrink film, continuous hot stamping is possible as shown in FIG.

  In addition, although embodiment of this invention was described by the Example, the transfer film of this invention can also add a layer further as needed. It is not limited to these examples. In the above-described embodiments, the printing layer is entirely formed with printing ink having an anchor coating agent as a component, but only a predetermined portion of the printing layer is formed with printing ink having an anchor coating agent as a component, and vapor deposition is performed. It can also be set as the decoration aspect in which the decoration layer of the printing layer independent which the layer did not laminate | stack was mixed.

  As described above, the transfer film of the present invention exhibits the decoration effect by the printing layer and the vapor deposition layer to a high degree with little deviation while suppressing the cost for decoration. In addition, it is possible to provide a product differentiated by appearance by exhibiting a high-quality decoration effect, and a wider range of application development can be expected for cosmetics and the like.

It is sectional drawing which shows the layer structure of 1st Example of the transfer film of this invention. It is explanatory drawing which shows the formation method of the decorating layer in the transfer film of FIG. It is sectional drawing which shows the layer structure of 2nd Example of the transfer film of this invention. It is sectional drawing which shows the layer structure of 3rd Example of the transfer film of this invention. It is sectional drawing which shows the state which decorated the to-be-decorated body with the transfer film of FIG. It is explanatory drawing which shows the outline of the transfer process by the transfer film of this invention which used the shrink film as a base material. It is sectional drawing which shows the layer structure of the transfer film made into a comparative example. It is sectional drawing which shows the typical example of the conventional transfer film.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Transfer film 2; Substrate film 3; Release layer 4; Protective layer 5; Decoration layer 6; Print layer 7; Deposition layer 8; Adhesion layer 9; Anchor layer 11; Heating device 13; Heat roll 101; Transfer film 102; Base film 106; Release layer 112; Print layer 107; Adhesive layer

Claims (5)

A base film made of synthetic resin (2), a printed layer (6) to be peelably laminated on the base film (2), and laminated in alignment with a predetermined portion of the printed layer (6) A transfer film comprising a vapor deposition layer (7), wherein the predetermined portion is formed of a printing ink containing an anchor coat agent, and the vapor deposition layer (7) is directly bonded to the predetermined portion and laminated. . The transfer film according to claim 1, wherein an adhesive layer (8) for adhering to the object to be decorated (11) is laminated on the decorative layer (5) with a heat-welding adhesive. The transfer film according to claim 1 or 2, wherein the printing layer (6) is formed thick. The decorative film according to claim 1, 2, or 3, wherein the surface of the printed layer (6) on the base film (2) side is covered with a protective layer (4). The decorative film according to claim 1, 2, 3, or 4, wherein the base film (2) is made of a shrink film, and the transfer property to the curved surface of the object to be decorated (11) is improved.

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