JP2014221544A - Water transfer type decal and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water transfer type decal having a high precision, thin printed face in which halftone is inconspicuous, capable of efficiently performing a transfer operation, further low in production cost and suitable for small lot production, and a method for producing the same.SOLUTION: The water transfer type decal 1 has a structure where a transfer film layer 16 printable with solvent ink is formed on the surface of a top coat layer 3, and a printed layer 8 made of solvent ink is printed on the surface of the transparent film layer using an ink jet type printer, and includes an auxiliary notch line branched from the halfway of a notch line provided so as to surround the pattern part of a transfer layer and reach the edge of the transparent film layer.

Description

  The present invention relates to a water transfer type decal used for decorating a model or the like, and more particularly to a water transfer type decal that is low in manufacturing cost and suitable for small lot production, and a method for manufacturing the same.

Decal is an abbreviation of decalmania (English) or decalmanie (French) meaning transfer method or transfer image, and stickers or stickers that are affixed to models etc. mainly for decoration or sheets used for them That means.
Decals are divided into several types depending on the method of transferring the design. For example, a dry decal that transfers a design by placing a transparent film on the surface of an object and rubbing it from above, or a thermal transfer type decal that applies heat with an iron instead of rubbing the surface of the film from above is known. However, in these methods, there is a problem that the position cannot be finely adjusted at the time of transfer or cannot be attached again after transfer. In addition, the thermal transfer type can be used for cloth and leather, but cannot be used for plastic models.
Therefore, in order to satisfy such a demand, in recent years, a water transfer type decal that attracts attention by immersing a mount having an ink layer formed on the surface thereof in water and sliding only the ink layer onto an object is drawing attention. With regard to this water transfer type decal, several inventions and devices have already been disclosed.

For example, Patent Document 1 discloses an invention relating to a technology that can obtain a water transfer paper having the name “water transfer paper base paper” that is excellent in slidability during water transfer and has a clear pattern after baking. Yes.
In the invention disclosed in Patent Document 1, the glass water absorption on the surface of the pigment coating layer mainly composed of a pigment and an adhesive is 40 g / m ² or less per 30 seconds of contact time and 100 g / m ² or more per 120 seconds. The measured value of the air leaking paper smooth watch is 1.00 to 1.70 μm under a pressurizing condition of 1.96 MPa.
By using the “water transfer base paper” having such a structure, since the water absorption unevenness of the pigment coating layer is eliminated during water transfer, it becomes easy to slide the pattern layer, and the pattern after baking Can be expected to be clear.

JP 2009-137203 A

Here, the structure of a conventional water transfer type decal (corresponding to “water transfer base paper” in Patent Document 1) will be described with reference to FIG.
FIG. 5A shows the appearance of a conventional water transfer type decal 50, and FIG. 5B shows a cross section taken along line BB in FIG. 5A.
As shown in FIGS. 5A and 5B, the conventional water transfer type decal 50 is provided with an undercoat layer 2, a topcoat layer 3, and a transfer layer 4 on one surface of a printing mount 11. The back coating layer 5 is provided on the other surface of the printing mount 11.
The printing mount 11 is composed of a base paper 6 provided with a pigment coating layer 7 mainly composed of a pigment and an adhesive on one side. The back coat layer 5 is used for the purpose of increasing the rigidity of the base paper 6 and preventing the printing mount 11 from curling.
In addition, the undercoat layer 2 provided to adjust the unevenness of the surface of the base paper 6 and retain the absorbed water is mainly composed of hydrophilic starch, and the topcoat layer 3 is water-soluble such as dextrin and methylcellulose. Made of glue. Further, the transfer layer 4 includes a print layer 8 formed by silk screen printing or offset printing, and a cover coat layer 9 made of acrylic resin. The cover coat layer 9 has cut lines 10 surrounding the print layer 8. Is provided.

A conventional water transfer type decal transfer method will be described with reference to FIGS.
6A shows a state in which a conventional water transfer type decal 50 is immersed in water, and FIG. 6B is a cross-sectional view of the water transfer type decal 50 in FIG. 6A. 7A shows a state in which the pattern portion 13 of the transfer layer 4 has been peeled off from the printing mount 11, and FIG. 7B shows the state in which the pattern portion 13 of the transfer layer 4 is attached to the transfer body 14. The attached state is shown.
6B corresponds to a state in which the transfer layer 4 is slid with respect to the printing mount 11 in FIG. 5B, and FIG. 7B is a view from the printing mount 11 in FIG. 7A. This corresponds to a state in which the pattern portion 13 of the peeled transfer layer 4 is attached to the transfer target 14.

First, as shown in FIG. 6A, the conventional water transfer type decal 50 described with reference to FIG. 5 is immersed in water 12 for about 2 to 3 seconds. As a result, the water-soluble glue of the top coat layer 3 is dissolved, and the transfer layer 4 is slidable with respect to the printing mount 11 as shown in FIG.
Therefore, the transfer layer 4 is peeled from the printing mount 11 while the water-soluble glue does not completely dissolve into the water 12, that is, while the water-soluble glue remains in the transfer layer 4. Specifically, after the water transfer type decal 50 is taken out from the water 12, the pattern portion 13 surrounded by the cut line 10 in the transfer layer 4 is pressed with tweezers or a fingertip on the transfer body 14, and light pressure is applied. In addition, as shown in FIG. 7A, the transfer layer 4 is peeled off from the printing mount 11 by sliding.
Finally, as shown in FIG. 7B, the pattern portion 13 is placed on the transfer target 14 and dried. Thereby, the transfer operation of the pattern portion 13 is completed.

As described above, the printing layer 8 is formed by silk screen printing or offset printing. However, silk screen printing is costly because a plate is required for each increase in the number of colors. In addition, skill is required for color superposition, and the yield is not good. Furthermore, since it is not suitable for gradation printing, for example, it cannot be used for a decal mainly composed of an illustration used for a car model.
In general, after the decal is transferred, it is coated with a clear paint, etc., and smoothed with a compound or the like to finish. However, in silk screen printing, the mark itself becomes thick due to the overlapping of the ink layers. It is difficult to perform finishing work.

On the other hand, halftone printing is likely to occur because offset printing is a combination of four colors of cyan, magenta, yellow, and black. In particular, in a specific color with many color combinations, the halftone plate is conspicuous, and there is a risk of deteriorating the beauty. Note that the halftone plate can be made difficult to see by increasing the number of printed lines, but in this case, since large lot printing is premised, the printing cost becomes high.
Further, it is conceivable to use a thermal transfer printer as a method other than silk screen printing or offset printing. However, since the thermal transfer printer is an ink ribbon type, a horizontal line appears in the printed pattern. Further, since the cost of the ink ribbon is high, the printing cost cannot be reduced.
The conventional water transfer type decal 50 has a problem that it is difficult to separate the pattern portion 13 from the cover coat layer 9 when the transfer layer 4 is slid with respect to the printing mount 11.

  The present invention has been made in response to such a conventional situation. The halftone plate is inconspicuous, has a high-definition and thin printing surface, can perform transfer work efficiently, and has a low manufacturing cost. An object of the present invention is to provide a water transfer type decal suitable for small-lot production and a manufacturing method thereof.

  In order to achieve the above object, a water transfer type decal according to the first aspect of the present invention comprises a printing board made of high-quality paper or coated paper and having water absorption, and a water-soluble paste formed on the surface of the printing board. A top film layer, a transparent film layer formed on the surface of the top coat layer and printable with a solvent ink, and a printing layer formed on the surface of the transparent film layer using a solvent ink by an ink jet printer. , Provided.

In the water transfer type decal having such a structure, since the printing layer is printed by an ink jet type printing machine, unlike the silk screen printing, there is a problem that the cost increases as the number of colors increases, and the ink layer There is no problem of increase in thickness due to superposition. In addition, since there is no need for skilled techniques for color superposition like silk screen printing, the yield is good. Furthermore, the color development of the gradation portion is better than when silk screen printing is performed. In addition, since the printing layer is formed of a solvent ink, it has a quick drying property and is excellent in weather resistance and water resistance.
Further, unlike the offset printing, the ink jet printing is unlikely to generate halftone because there is no process of multiplying four colors. Furthermore, unlike the case of using an ink ribbon type thermal transfer printer, there is no possibility that a horizontal line enters a printed pattern.
And even if the pattern of the print layer is composed of a plurality of pictures, characters, etc., it has an effect that these patterns are connected and integrated through the transparent film layer. Therefore, even when the printing layer and the transparent film layer are dipped in water together with the printing mount, and the water-soluble glue is dissolved, the pictures and characters constituting the pattern do not fall apart.

The invention according to claim 2 is the water transfer type decal according to claim 1, wherein the transparent film layer has a cut line formed around the printed layer, and an end of the transparent film layer branched from the cut line. And an auxiliary score line formed to reach the edge.
According to the water transfer type decal having such a structure, in addition to the action of the invention described in claim 1, the water-soluble glue is dissolved by immersing in water, and the printing layer constituting the pattern is peeled off from the printing mount. At this time, the transparent film layer has an action of separating from the printing layer along the cut line. Moreover, it has the effect | action that a part of transparent film layer isolate | separated from a printing layer is cut | disconnected from an auxiliary incision line as a boundary.

The method for producing a water transfer type decal according to claim 3 comprises a step of forming a top coat layer by applying a water-soluble paste to the surface of a printing board made of fine paper or coated paper and having water absorption, A process for forming a transparent film layer that can be printed with a solvent ink on the surface of the topcoat layer, and a process for forming a print layer by printing a pattern portion with a solvent ink on the surface of the transparent film layer using an ink jet printer. It is characterized by comprising.
Such a water transfer type decal manufacturing method has the same effect as that of the invention described in claim 1 since the invention of the object described in claim 1 is regarded as a method invention.

According to a fourth aspect of the present invention, there is provided the water transfer type decal manufacturing method according to the third aspect, wherein the transparent film layer is formed with a cut line around the printed layer, and the transparent film layer is branched from the cut line. And a step of forming an auxiliary score line so as to reach the end edge.
Such a water transfer type decal manufacturing method has the same effect as that of the invention described in claim 2 since the invention of the object described in claim 2 is regarded as the invention of the method.

As described above, the water transfer type decal according to the first aspect of the present invention has a high-definition and thin printing surface because the halftone plate is not conspicuous, and is excellent when transferred to a transfer target such as a model. Demonstrate the decorative effect.
In addition, since a skillful technique like silk screen printing is not required and a pattern can be printed using a commercially available inexpensive inkjet printer, it is suitable for small lot production. In particular, since it is not necessary to cover the print layer with a cover coat layer, for example, a paper manufacturer is requested to form a transparent film layer on the surface of the printing mount, and the printing mount is purchased and only the printing process is performed. Can be performed using the above-described inexpensive printing press. Thereby, the manufacturing cost is further reduced.
Furthermore, even when the pattern portion of the printing layer is composed of a plurality of characters, pictures, etc., it can be easily transferred to the transfer medium without destroying the positional relationship of each character.

  According to the water transfer type decal of the second aspect of the present invention, in addition to the effects of the first aspect of the invention, when the print layer and the transparent film layer are peeled from the printing mount, the print layer And an unnecessary transparent film layer in contact with the cut line and the auxiliary cut line can be easily separated. This improves the efficiency of the transfer operation.

  According to the method for producing a water transfer type decal according to claim 3 of the present invention, since the invention of the object according to claim 1 is regarded as the invention of the method, it is the same as the invention according to claim 1. The effect of.

  According to the method for producing a water transfer type decal described in claim 4 of the present invention, since the invention of the object described in claim 2 is regarded as the invention of the method, the same as the invention described in claim 2 The effect of.

(A) is a top view of the Example of the water transfer-type decal which concerns on embodiment of this invention, (b) is AA arrow sectional drawing of the same figure (a). (A) is a perspective view showing a state in which the water transfer type decal of FIG. 1 is immersed in water, and (b) is a cross-sectional view of the water transfer type decal shown in FIG. (A) is a figure which shows the state from which the pattern part of the transfer layer was peeled off from the mount for printing in the same figure (a), (b) is the state by which the pattern part of the transfer layer was affixed on the to-be-transferred body. It is sectional drawing shown. It is process drawing which shows the Example of the manufacturing method of the water transfer type decal which concerns on embodiment of this invention. (A) is a top view of the conventional water transfer type decal, (b) is a BB arrow sectional drawing of the figure (a). (A) is a perspective view which shows the state in which the conventional water transfer type decal of FIG. 5 was immersed in water, (b) is sectional drawing of the water transfer type decal shown to the same figure (a). (A) is a figure which shows the state from which the pattern part of the transfer layer was peeled off from the mount for printing in the same figure (a), (b) is the state by which the pattern part of the transfer layer was affixed on the to-be-transferred body. It is sectional drawing shown.

The water transfer type decal of the present invention will be specifically described with reference to FIGS.
FIG. 1A shows the appearance of the water transfer type decal 1 of the present embodiment, and FIG. 1B shows a cross section taken along line AA in FIG. FIG. 2A shows a state in which the water transfer type decal 1 is immersed in water, and FIG. 2B is a cross-sectional view of the water transfer type decal 1 in FIG. 3A shows a state in which the pattern portion 13 of the transfer layer 4 has been peeled off from the printing mount 11, and FIG. 3B shows the state in which the pattern portion 13 of the transfer layer 4 is attached to the transfer body 14. The attached state is shown.
2B corresponds to a state in which the pattern portion 13 of the transfer layer 4 is slid with respect to the printing mount 11 in FIG. 1B, and FIG. 3B is printed in FIG. 3A. This corresponds to a state in which the pattern portion 13 of the transfer layer 4 peeled off from the mount 11 is attached to the transfer target 14. Moreover, about the component shown in FIGS. 5-7, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 1A and FIG. 1B, the water transfer type decal 1 of the present invention is printed on the surface of the topcoat layer 3 by silk screen printing or offset printing in the conventional water transfer type decal 50. Instead of the layer 8 being formed, a transparent film layer 16 that can be printed with a solvent ink was formed, and the printing layer 8 made of the solvent ink was printed on the surface of the transparent film layer 16 by using an ink jet printer. It has a structure. An auxiliary cut line 15 is provided so as to branch from the middle of the cut line 10 provided so as to surround the pattern portion 13 of the transfer layer 4 and reach the edge of the transparent film layer 16.

Ink jet printers perform printing by ejecting ink from nozzles, and therefore, unlike ink ribbon thermal transfer printers, there is no risk of horizontal lines entering during printing. However, it is necessary to use dedicated ink in an ink jet printer.
This ink is classified into three types, water-based ink, oil-based ink, and solvent ink, but water-based ink cannot be used because it bleeds during water transfer. In contrast, oil-based inks and solvent inks are excellent in weather resistance and water resistance. However, since oil-based inks are low in volatility and difficult to dry, they are suitable for permeable materials such as cardboard, but are not suitable for printing on the printing board 11. Therefore, the water transfer type decal 1 of the present invention uses a solvent ink that is particularly excellent in weather resistance and water resistance and has quick drying properties.

A transfer method of the water transfer type decal 1 will be described with reference to FIGS.
As shown in FIG. 2 (a), when the water transfer type decal 1 is immersed in water 12 for about 2 to 3 seconds, the water-soluble glue of the top coat layer 3 is dissolved, and as shown in FIG. The layer 4 is slidable with respect to the printing mount 11.
Therefore, before the water-soluble glue constituting the top coat layer 3 is completely dissolved into the water 12, the water transfer decal 1 is taken out from the water 12, and the pattern of the transfer layer 4 is formed on the transfer target 14. The portion 13 is pressed with tweezers or a fingertip, and the transfer layer 4 is peeled off from the printing mount 11 as shown in FIG. At this time, a part of the transparent film layer 16 is cut off with the auxiliary score line 15 as a boundary. Therefore, according to the water transfer type decal 1 of the present invention, the pattern portion 13 and the unnecessary transparent film layer 16 that is in contact with the pattern portion 13 via the cut line 10 can be easily separated.
Then, as shown in FIG. 3 (b), after the picture portion 13 is placed on the transfer target 14, the transfer operation of the picture portion 13 is completed by drying.
In the present embodiment, the pattern portion 13 is an integrated object. However, the present invention is not limited to this. For example, the pattern portion 13 may include a plurality of characters. As described above, in the water transfer type decal 1, since the printing layer 8 is formed on the surface of the transparent film layer 16, each character of the pattern portion 13 is connected via the transparent film layer 16. That is, the water transfer type decal 1 has an effect that the characters of the pattern portion 13 are integrated by the transparent film layer 16. That is, according to the water transfer type decal 1, even when the pattern portion 13 is composed of a plurality of characters or pictures, it can be easily transferred to the transfer target 14 without breaking the positional relationship of each character. Can do.

  In this embodiment, the undercoat layer 2 is provided on the surface of the pigment coating layer 7 provided on one side of the base paper 6, and the backcoat layer 5 is provided on the other side of the base paper 6. The water transfer type decal 1 of the present invention is not limited to such a structure. For example, the undercoat layer 2, the backcoat layer 5, and the pigment coating layer 7 may be omitted. That is, the water transfer type decal 1 of the present invention has a structure in which a top coat layer 3 is provided on one side of a printing mount 11 made only of a base paper 6 and a transfer layer 4 is formed on the surface of the top coat layer 3. There may be. Even in this case, the above-described functions and effects of the present invention are exhibited in the same manner.

Next, a method for manufacturing the water transfer type decal 1 will be specifically described with reference to FIG.
FIG. 4 is a process diagram showing a method for manufacturing the water transfer type decal 1.
As shown in FIG. 4, first, in step S1, starch, dextrin, polyvinyl pyrrolidone, polyvinyl alcohol, gum arabic, anionic acrylic resin is formed on the surface of the printing paper 11 having good water absorption, which is made of high-quality paper or coated paper. The top coat layer 3 is formed by applying a water-soluble paste composed of the like. The fine paper has a structure in which the pigment coating layer 7 and the undercoat layer 2 are not provided on the surface of the base paper 6, and the coated paper has the pigment coating layer 7 and the undercoat layer 2 on the surface of the base paper 6. It has a provided structure.
In step S2, a transparent film layer 16 made of a styrene resin or an acrylic resin and printable with a solvent ink is formed on the surface of the topcoat layer 3.
In step S3, the pattern portion 13 is printed with a solvent ink on the surface of the transparent film layer 16 using an ink jet printer. Thereby, the transfer layer 4 composed of the transparent film layer 16 and the print layer 8 is formed.
In step S <b> 4, the cut line 10 is made on the transparent film layer 16 by a cutting machine or manually so as to surround the pattern portion 13 of the printing layer 8.
Furthermore, in step S <b> 5, the auxiliary cut line 15 is inserted so as to branch from the middle of the cut line 10 to the transparent film layer 16 and reach the edge of the transparent film layer 16.
When the cut line 10 is a closed curve, the effect that the unnecessary portion of the transparent film layer 16 can be easily separated from the pattern portion 13 when the pattern portion 13 of the transfer layer 4 is peeled from the printing mount 11 is most exhibited. The However, it is desirable to provide the auxiliary score line 15 as long as the above effect can be expected even if the score line 10 is not a closed curve.
Further, by using a printing machine having a cutting function in addition to the printing function, the accuracy of forming the cut line 10 and the auxiliary cut line 15 is improved, and the steps S4 and S5 are continued from the step S3. This makes it possible to increase the productivity of the water transfer type decal.

As described above, in the water transfer type decal 1 of the present invention, since the printing layer 8 is formed by using an ink jet type printer, it is different from the case where the printing layer 8 is formed by silk screen printing. The problem that the cost increases as the number of colors increases and the problem that the thickness increases due to the overlapping of the ink layers do not occur. In addition, since there is no need for skilled techniques for color superposition like silk screen printing, the yield is good. Therefore, a thin printing surface can be formed at low cost.
And since the pattern part 13 of the printing layer 8 can be formed using a commercially available inexpensive inkjet printer, the water transfer type decal 1 of the present invention is suitable for small-lot production. In particular, since the process of covering the printing layer 8 with the cover coat layer 9 is not necessary, for example, a process for forming a transparent film layer 16 on the surface of the printing mount 11 is requested to a paper manufacturer and the printing mount 11 is purchased. Thus, only the printing process can be performed using the above-described inexpensive printing machine. This further reduces manufacturing costs.

Further, compared to silk screen printing, the gradation portion has good color development, and unlike offset printing, there is no step of four-color multiplication, so halftone is unlikely to occur. Furthermore, unlike the case of using an ink ribbon type thermal transfer printer, there is no possibility that a horizontal line enters a printed pattern.
That is, the water transfer type decal 1 of the present invention has an excellent decorative effect when transferred to a transfer medium such as a model because the halftone plate is not noticeable and has a high-definition and thin printing surface.

And in the water transfer type decal 1, even when the pattern portion 13 of the printing layer 8 is composed of a plurality of pictures, characters, etc., they have the effect that they are connected and integrated via the transparent film layer 16. . Therefore, even when the printing layer 8 and the transparent film layer 16 are immersed in the water 12 together with the printing mount 11 to dissolve the water-soluble glue, a plurality of pictures and characters constituting the pattern portion 13 are not separated. Absent.
That is, according to the water transfer type decal 1 of the present invention, a plurality of pictures, characters and the like constituting the pattern portion 13 can be easily transferred to the transfer target 14 without destroying the mutual positional relationship.

  The inventions described in claims 1 to 4 can be applied to decorations such as painting on ceramics, glass, metal products, and plastic models.

  DESCRIPTION OF SYMBOLS 1 ... Water transfer type decal 2 ... Undercoat layer 3 ... Topcoat layer 4 ... Transfer layer 5 ... Backcoat layer 6 ... Base paper 7 ... Pigment coating layer 8 ... Printing layer 9 ... Cover coat layer 10 ... Cut line 11 ... Mount for printing 12 ... Water 13 ... Pattern part 14 ... Transfer object 15 ... Auxiliary cut line 16 ... Transparent film layer 50 ... Water transfer type decal

Claims (4)

A printing mount made of high-quality paper or coated paper and having water absorption,
A topcoat layer formed of a water-soluble glue formed on the surface of the printing mount;
A transparent film layer formed on the surface of the topcoat layer and printable with a solvent ink;
A printing layer formed on the surface of the transparent film layer using the solvent ink by an ink jet printer,
Water transfer type decal characterized by A score line formed around the printed layer with respect to the transparent film layer,
An auxiliary score line formed so as to branch from the score line and reach the edge of the transparent film layer;
The water transfer type decal according to claim 1, further comprising: Forming a topcoat layer by applying a water-soluble paste to the surface of a printing board made of high-quality paper or coated paper and having water absorption;
Forming a transparent film layer printable with a solvent ink on the surface of the topcoat layer;
Forming a print layer by printing a pattern portion with the solvent ink on the surface of the transparent film layer using an inkjet printer;
A method for producing a water transfer type decal, comprising: Forming a score line around the printed layer with respect to the transparent film layer;
Forming an auxiliary score line so as to branch from the score line and reach the edge of the transparent film layer;
The method for producing a water transfer type decal according to claim 3.

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