JPH02137995A - Method for applying image to outer surface of outer-convering component part - Google Patents

Abstract

PURPOSE:To prevent the occurrence of deviation crosswise as well as longitudinally by a method wherein a release layer and an adhesive layer are printed on a base film beyond the range of an image pattern layer in an overcoated manner, and the image pattern layer is held by the printed release layer and adhesive layer in an overcoated manner in the contact-bonding of the base film to an outer-covering component part. CONSTITUTION:A release layer 13, an ink layer 14, and an adhesive layer 15 are successively laminated on one surface of a base film F to form an image pattern layer 16. The release layer 13 and the adhesive layer 15 are printed beyond the range of the image pattern layer 16 so as to bulge out thereabouts. The base film F is brought into pressure contact with the outer surface of a fairing 11, and the image pattern layer 16 is bonded on the fairing 11 through the adhesive layer 15. At this time, the image pattern layer 16 is held by a part H of the release layer 13 and the adhesive layer 15 which has been printed in an overcoated manner so as not to shift crosswise as well as longitudinally. Because the image pattern layers 16a-16d are integrally shifted even if it is shifted longitudinally, an image pattern with little distortion and high accuracy can be applied.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the outer surface of exterior parts, such as fairings, side covers, or The present invention relates to a dispensing method suitable for dispensing on the outer surface of a tank or the outer surface of a ship's hull parts.

[Prior art] Generally, stripes, marks, etc. (including letters) are painted on the outer surface of exterior parts such as motorcycle fairings to enhance the design effect. As a method, for example, as shown in Japanese Patent Publication No. 56-45768, a thermoplastic film on which a pattern is printed and an adhesive is laminated is positioned and placed on an exterior component, and then heated and softened. A technique is known in which the film is pressure-bonded to the outer surface of the exterior component, thereby painting the pattern on the outer surface of the exterior component while being covered by the film.

``Problem to be Solved by the Invention'' However, in the above technique, since the film is left covering the pattern, the opening of the fairing described above is left covered by the film after the pattern is applied. Furthermore, since the film protrudes from the periphery of the fairing, there are drawbacks such as the need to remove the portion covering the opening and the film protruding from the periphery.

Therefore, the present applicant previously proposed in Japanese Patent Application No. 62-294709, as shown in FIG.
At least the release layer 13, the ink layer 14 and the adhesive layer 1
A base film F on which a pattern layer 16 consisting of the three layers of No. 5 is printed is pressure-bonded with the pattern layer 16 facing the exterior component W, and then the base film F is peeled off and the pattern layer 16 is applied to the exterior component W. A method was proposed in which the pattern layer 16 is transferred onto the outer surface of the component W, and then the surface of the pattern layer 16 is hardened.

However, it has been found that the following problems remain when implementing the above-mentioned painting method.

That is, as shown in the figure, when the base film F is pressure-bonded to the exterior component W composed of a curved surface, the adhesion between the patterns occurs when the film F curves along the exterior component W. When pushing up in areas where the agent is not applied, a shift occurs between the film and the exterior part W, causing distortion in the transferred pattern E as shown in Figure 2 (the stripes S and the gaps between them are constant). This is a problem.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for painting the outer surface of an exterior part, which not only allows easy removal of the film but also enables the application of a desired pattern with little distortion.

"Means for Solving the Problems" In order to solve the above problems, the present invention prints a pattern layer consisting of a release layer, an ink layer, and an adhesive layer in this order (all three layers) on the outer surface of an exterior component. After pressing the base film with the pattern layer facing the exterior parts,
A method for painting the outer surface of an exterior component, comprising peeling off the base film, transferring the pattern layer to the outer surface of the exterior component, and then subjecting the surface of the pattern layer to a hardening treatment, the method comprising: The film is characterized in that the release layer and adhesive layer are printed not only on the pattern layer but also around the pattern layer so as to protrude from the film.

[Operation] By press-bonding the cobase film to the outer surface of the exterior component and transferring the pattern layer printed on the base film to the exterior surface of the exterior component, the accuracy of alignment between the exterior component and the pattern is improved, and the transfer By peeling off the base film later, the opening formed in the exterior part can be opened and the protruding part from the periphery of the exterior part can be simultaneously removed, making this work easier and facilitating the dispensing operation. It can be simplified.

In addition, since the base film is printed with a release layer and an adhesive layer that protrude not only on the pattern layer but also around it, when the base film is pressure-bonded to the exterior parts, the pattern layer is printed on this protrusion. It is supported by a peeling layer and an adhesive layer, and is prevented from shifting in the front, back, left and right directions.

[Example] Hereinafter, one embodiment of the present invention will be described based on the drawings.

Reference numeral 1 in FIG. 3 indicates a motorcycle equipped with exterior parts to which this embodiment is applied, including a body frame 2, a front fork 3 rotatably attached to the front part of the body frame 2, A steering handle 4 attached to the upper end of the front fork 3, a front wheel 5 rotatably attached to the lower part of the front fork 3, a fork 6 rotatably attached to the rear of the vehicle body frame 2,
The rear wheel 7 is rotatably attached to the swinging end of the rear fork 6, the engine 8 is attached to the approximate center of the vehicle body frame 2, and the engine 8 is attached to the top of the vehicle As an exterior component provided to cover the fuel tank 9, the seat lO attached to the vehicle body frame 2 at the rear position of the fuel tank 9, and the front, side, and rear upper part of the vehicle body frame 2. The outer surface of the fairing 11 is decorated by the method according to this embodiment.

The fairing 11 is made of synthetic resin such as 8BS or ΔES, or painted metal such as steel plate or aluminum, and has an air duct in a portion facing the side of the vehicle body frame 2. 12 is open.

Here, among resin-based paints, those having polarity and low drying temperature, such as urethane-based paints, are preferably used as the paint used for the coating.

Next, the painting method of this embodiment will be explained.

First, the structure of the base film F for dispensing used in this example will be explained.

As shown in FIG. 4, the base film F has a release layer 13 and an ink layer 1 on one surface (lower surface in FIG. 4).
4. A pattern layer 16 is formed by sequentially laminating adhesive layers 15.

In addition, this base film F has a release layer 13 and an adhesive layer 15 not only on the pattern layer 16 but also around it.
It is printed to protrude from the picture layer 16. That is, the ink layer 14 is placed between the release layer 13 and the adhesive layer 15 in a sandwiched state.

Note that the peeling layer 13 is printed protruding from the pattern layer 16.
The portion H of the adhesive layer 15 does not need to cover the entire area of the base film, and may cover the entire area of the base film F as long as it can cover the outer surface of the fairing 11.

The base film F is made of thermoplastic resin, and specific examples thereof include vinyl chloride, ABS, fluorine resin,
Examples of the base film F include polyethylene, polypropylene, polycarbonate, and composites thereof.
Considering the elongation of the pattern layer 16 and the printability cost of the pattern layer 16, vinyl chloride is preferably used. Further, the thickness of the base film F is appropriately set in consideration of moldability, cost, and the like.

As the peeling layer 13, polyvinyl butyral, nitrocellulose, chlorinated rubber, etc. are used, and polyvinyl butyral is particularly preferred since it is advantageous in terms of weather resistance and adhesion.

Further, in this example, in order to improve weather resistance in the resin used for the peeling layer 13, antioxidants, radical scavengers, ultraviolet absorbers, etc. are added as appropriate, and ultraviolet curable resins, , photoinitiators and sensitizers are mixed.

The reason for mixing this ultraviolet curable resin is that it does not inhibit the elongation of the base film F, and also ensures peelability from the base film F due to the characteristics of polyvinyl butyral, while improving the scratch resistance of the pattern layer 16. This is to improve. That is, since resins with good scratch resistance usually have high hardness, brittleness, and properties that do not stretch easily, if such resins are used in the above-mentioned release layer 13, the stretch of the base film F will be inhibited. However, as mentioned above,
By using an ultraviolet curable resin for the peeling layer 13, the base film F is allowed to stretch in an uncured state when attached to the surface of the exterior component, and after the base film F is peeled off, it is cured by irradiating ultraviolet rays. By doing so, the above-mentioned scratch resistance is ensured. At the same time,
Since the ultraviolet curable resin has a low viscosity, it can also be expected to improve the suitability for printing on the base film F.

Examples of the ultraviolet curable resin include polyester acrylate, epoxy acrylate, polyurethane acrylate, polyether acrylate, and polyol acrylate. Here, in order to increase the hardness, it is preferable to use an acrylate with two or more functionalities, and in order to further improve the scratch resistance, an acrylate with three or more functionalities is required.

The reason why the photoinitiator is mixed is to promote the curing of the ultraviolet curable resin by ultraviolet rays. One or more types of ketal etc. are added in an amount of 0.01% to 10% based on the ultraviolet curable resin.
Mix and use.

Furthermore, the sensitizer is used to increase the effect of the photoinitiator, and amines are used.

On the other hand, in consideration of storage stability, it is desirable to use a storage stabilizer (polymerization inhibitor) such as hydroquinone.

Although normal ink can be used for the ink layer 14, it is preferable to use an ink that uses an acrylic-vinyl chloride resin binder and a pigment with good weather resistance because it is necessary to ensure elongation. preferable.

As the adhesive layer 15, either a thermoplastic resin or a thermosetting resin can be used, but for example, when adhering to a resin or a painted surface on a resin, there are temperature restrictions and base film F. In consideration of storage stability, thermoplastic resins, particularly urethane thermoplastic resins, are preferred.

On the other hand, the peeling l1iI layer 13, the ink layer 14, and
The adhesive layers 15 are sequentially laminated on the base film F using printing means such as silk printing, gravure printing, barcode printing, knife coating, etc. Among these methods, silk printing is preferable in terms of cost and quantity when applying a two-tone or three-tone pattern to the fairing 11 of the motorcycle 1.

Next, using the base film F on which the pattern layer [6] having the above-described structure is printed, the procedure of applying it to the outer surface of the fairing 11 by the method of this embodiment is shown in Figs. 5(a) to (). The explanation will be based on d).

First, the fairing 11 is mounted on the stand 2 via the support 20.
Set it on 1. Further, as described above, the base film F on which the pattern layer 16 is printed is placed under vacuum with the pattern layer 16 facing the outer surface of the fairing 11 and with the pattern and the fairing l] aligned. container 22
The vacuum container 22 is
Separate the inside airtight.

Then, the base film F creates a vacuum volume “?h?r”.
After reducing the internal pressure of each of the divided chambers 22a and 22b formed in the vacuum chamber 22 to the same vacuum pressure, the base film F is placed on the top of the vacuum container 22.
Heat and soften according to step 3.

The heating temperature at this time is the base film F as described above.
When vinyl chloride is used for
However, in consideration of the activation state of the adhesive layer 15, it is optimal to set it within the range of 100°C to 140°C.

Thereafter, the fairing 11 is raised by the lifting means 24 to lightly contact the base film F, and the divided chamber 22a on the side where the fairing 11 is not disposed is opened to the atmosphere to increase its internal pressure. As shown in FIG. 6, the base film F is brought into pressure contact with the outer surface of the fairing 11, and the pattern layer 16 is adhered to the fairing 11 using the adhesive layer 15.

At this time, the pattern layer 16 is supported by the peeling layer 13 and adhesive layer 14 portion H printed on the periphery so as not to shift back and forth and left and right. Furthermore, even if the pattern is shifted left and right, if the pattern is a plurality of stripes as shown in FIGS. 5 and 7, the individual pattern layers 16a=d are shifted together, so the individual pattern layers 16a A relative deviation is unlikely to occur between d. As a result, highly accurate designs with little distortion can be created.

One example of this specific method is to use the adhesive and release layer plate as a solid plate to print on the entire film, but in this way, the flat plate can be used for other printing patterns regardless of the pattern. This also has the secondary effect of reducing costs.

Next, after taking out the fairing 11 from the vacuum container 22, the base film F is peeled off 816.

In this state, the pattern formed by the ink layer 14 is transferred to the outer surface of the fairing 11, and since this pattern is stuck only to the outer surface of the fairing 11, when the base film F is peeled off, As shown in FIGS. 8 and 9, the patterns located at the openings of the air duct 12 etc. formed in the fairing 11 and the parts protruding from the periphery of the fairing 11 have adhered to the base film F. removed in the state. Moreover, when the base film F is crimped onto the fairing 11, the flexibility of the base film F allows the pattern layer 16 to be slightly attached to the back side so as to wrap around the periphery of the opening and the outer periphery of the fairing 11. Since it covers the sides, the cut-off end of the pattern is located on the back side of the fairing 11,
It does not spoil the appearance.

After such a removal operation of the base film F, the peeling layer 13 exposed on the fairing 11 is irradiated with ultraviolet rays to harden the peeling layer 13.

Here, the irradiation of the ultraviolet rays is performed using, for example, a high-pressure mercury lamp, a metal halide lamp, etc., and the irradiation amount is 1
00mJ/am” or more, especially 200IIIJ/c
m" or 100 (laJ/cm'~2 depending on conditions)
QOOIIIJ/cm' is preferred.

As a result, a hardened layer is formed on the surface of the pattern layer 16, making it possible to create a highly weather-resistant and scratch-resistant painting.As a result, the aforementioned fairing 11, etc., is protected from outside air, rain, and even mud. When applied to exterior parts exposed to adverse conditions, it can be expected to maintain its appearance for a long period of time.

Note that the above-mentioned embodiment is just an example, and the present invention is not limited to this embodiment, and various changes can be made based on design requirements and the like.

For example, the final step of curing the pattern layer can be carried out by applying a clear coat to the surface of the pattern layer without adding the ultraviolet curable resin.

In this case, the paint used is a two-component urethane paint for the resin exterior parts, and a high temperature baking type acrylic melamine paint for the metal fuel tank.

In addition, the application is not limited to fairings 11 of motorcycles l, but also to side covers and other exterior parts of motorcycles, tricycles such as buggies, four-wheeled vehicles such as passenger cars, and even exterior parts of ships. It is also possible to apply to

Furthermore, the method of press-bonding the base film F to the exterior component may be any method other than the method described above.

[Effects of the Invention] As explained above, the method for painting the outer surface of an exterior component according to the present invention provides at least a release layer, a
A base film printed with a pattern layer consisting of three layers, an ink layer and an adhesive layer, is pressure-bonded with the pattern layer facing the exterior component, and then the base film is peeled off and the pattern layer is printed on the exterior component. Since the pattern layer is transferred onto the outer surface of the exterior component and then hardened on the surface of the pattern layer, it is possible to apply the design at a predetermined position on the exterior component, and also to remove the markings formed on the exterior component. To prevent deterioration of appearance by suppressing misalignment between patterns between the ends of the discontinuous part even when painting is performed across a discontinuous part.

In addition, by one operation of peeling the base film,
When an opening is formed in the exterior part, the opening can be opened and the protruding portion from the periphery can be removed, and the painting work can be simplified.
In addition, the weather resistance and scratch resistance of the surface of the pattern after application can be improved.

In addition, since the base film is printed with a release layer and an adhesive layer that protrude not only on the pattern layer but also around it, when the pattern layer is pressure-bonded to the exterior part, the printed release layer and adhesive layer that protrude and print are printed on the base film. The agent layer supports the pattern layer so that it does not shift back and forth and left and right. As a result, highly accurate patterns with little distortion can be created.

[Brief explanation of the drawing]

1(a), (b) and 2 are diagrams shown for explaining the present invention in detail, FIG. 3 is a side view of a motorcycle to which an embodiment of the present invention is applied, and FIG. 4 is an enlarged vertical cross-sectional view showing the structure of the base film used in one example, FIGS. 5(a) to 5(d) are diagrams explaining the painting procedure, and FIGS. 6 and 7 are main parts of the painting procedure. Figures 8 and 9 showing
The figure is a process explanatory diagram of one embodiment, and corresponds to a sectional view taken along the line ■-■ in FIG. 3. ! ...Motorcycle, 11...Fairing, 13...Peeling layer, 14...
... Ink layer, 14a ... Solid printing layer
14b... Rod printing layer 15... Adhesive layer, 16... Pattern layer, 22...
Vacuum container, 23... Heater, F...
・Base film, G ■・・・Protruding part of the release layer and adhesive layer.

Claims (1)

[Claims] A base film in which a pattern layer consisting of at least three layers in the order of a release layer, an ink layer, and an adhesive layer is printed on the outer surface of an exterior component, with the pattern layer facing the exterior component. A method for painting the outer surface of an exterior component, in which the base film is peeled off, the pattern layer is transferred to the outer surface of the component, and the surface of the pattern layer is then hardened. A method for painting the outer surface of an exterior component, characterized in that the base film is printed with a release layer and an adhesive layer extending not only on the pattern layer but also around the pattern layer.