JPH02137991A - Method for applying image to outer surface of outer-covering component part - Google Patents

Abstract

PURPOSE:To apply an image pattern with high accuracy by a method wherein a process for contact-bonding a base film printed with an image pattern layer made of three layers, i.e., a release layer, an ink layer, and an adhesive layer, to an outer-covering component part is conducted dividedly in two or more steps. CONSTITUTION:In a base film F, a release layer 13, an ink layer 14, and an adhesive layer 15 are successively laminated to form an image pattern layer 16. The base film F is depressed against one outer surface Wa of a fairing 11a, and the image pattern layer 16 is bonded to the fairing 11a with the adhesive layer 15. The other outer surface Wb of the fairing 11a on the reverse side is disposed approximately in parallel to the base film F, the base film F is shifted leftwards, the image pattern layer 16b is set opposed to the fairing 11a, and the base film F is contact bonded to the surface Wb. The base film F bonded on the right and left sides of the fairing 11a is released, whereby an image pattern made of the ink layer 14 is transferred to the outer surfaces Wa, Wb of the fairing 11a. The release layer 13 is irradiated with an ultraviolet light to be cured. The forming of the cured layer on the surface of the image pattern layer 16 enables an image of high weatherability and resistance to marring to be applied with high accuracy.

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 painting method suitable for painting 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 blocked 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 issues remain in implementing the above payment method.

That is, in the painting process in which the pattern layer 16 printed on the base film F is pressure-bonded to the exterior component, elongation may occur in the base film F, but if this elongation is large, the elongation of the pattern layer 16 is also large, and the transferability is As the image quality deteriorates, the concealment property (the ground color of the exterior component becomes easier to see to the outside through the pattern layer 16) deteriorates, and the positional accuracy of the pattern etc. also deteriorates.

As shown in Fig. 1, when applying high-precision designs to both the left and right sides of parts with three-dimensional uneven surfaces, such as the exterior parts of motorcycles, it is difficult to apply a pattern on both the left and right sides in one crimping process.
Since it is necessary to set Wb so that it has a large angle θ with respect to the base film F, the elongation of the film F corresponding to both the left and right sides becomes large, causing a problem that the desired precision cannot be achieved.

The present invention was made in view of the above circumstances, and in addition to being able to easily perform film removal processing, the present invention also allows for minimal distortion on each surface even if the object to be painted has a three-dimensional uneven surface. To provide a method for painting the outer surface of an exterior part by which a desired pattern can be applied.

[Means for Solving the Problems] In order to solve the above problems, the present invention provides a base film in which a pattern layer consisting of at least three layers, a release layer, an ink layer and an adhesive layer, is printed on the outer surface of an exterior component. is pressed with the pattern layer facing the exterior component, and then the base film is peeled off and the design layer is transferred to the outer surface of the exterior component, and then the pattern layer is hardened on the surface of the exterior component. A method for painting the outer surface of an exterior component by applying a treatment, characterized in that the step of press-bonding the base film to the exterior component is performed in multiple steps.

[Function] According to the present invention, the base film is pressure-bonded to the outer surface of the exterior component and the pattern layer printed on the base film is transferred to the outer surface of the exterior component, thereby improving the alignment between the exterior component and the pattern. By increasing the accuracy and peeling off the base film after transfer, the opening formed in the exterior part can be opened and the portion protruding from the periphery of the exterior part can be removed at the same time, making this work easier. In this way, benefit operations can be simplified.

In addition, since the process of crimping the base film to the exterior parts is done in multiple steps, the surface on which the design of the exterior parts is to be applied can be set almost parallel to the base film. Even if the exterior parts of a two-wheeled vehicle have three-dimensional uneven surfaces, each surface can be decorated with high precision.

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

Reference numeral l in FIG. 2 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, and , 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, and a fork 6 rotatably attached to the rear of the vehicle body frame 2. ,
A rear wheel 7 is rotatably attached to the swinging end of the rear fork 6, an engine 8 is attached to approximately the center of the vehicle body frame 2, and a fuel tank 9 is attached to the upper part of the vehicle body frame 2. It includes a seat 10 attached to the vehicle body frame 2 at a rear position of the fuel tank 9, and a fairing 11 as an exterior component provided to cover the front, side, and rear upper portions of the vehicle body frame 2. The outer surface of the portion 11a of the fairing 11 that covers the front portion of the vehicle body frame 2 is coated by the method according to this embodiment.

The fairing 11 is made of synthetic resin such as ABS or AES, or painted metal such as steel plate or aluminum.

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.

In this embodiment, as shown in FIG. 3, one base film F has two shots of the distribution layer 16 (16a-16b).
When the first shot is completed, the film F is shifted and a second shot is performed.

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

This base film F has a release layer 13, an ink layer 14, an adhesive layer 15 on one side (lower surface in FIG. 3).
are sequentially laminated to form a pattern layer 16.

The painted layer 16 is printed at two locations on the base film F, the left side and the center in the figure. The pattern layer 16a on the left is the first one! This is the part that is painted on the left side of the fairing lla.

Further, the central pattern layer 16b is the part to be shot for the second time, and is the part to be painted on the right side surface of the fairing 11.

Thermoplastic resin is used for the base film F, and specific examples thereof include vinyl chloride, ABS, 7'yn resin,
Examples include polyethylene, polypropylene, polycarbonate, and polymers thereof, and the base film F
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, chloride comb, etc. are used, and in particular, l1ir
Polyvinyl butyral, which is advantageous in terms of weatherability and adhesion, is preferred.

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 in.

The reason why this ultraviolet curable resin is mixed is to ensure scratch resistance by curing the base film F by irradiating it with ultraviolet rays after peeling it off. At the same time,
Since the ultraviolet curable resin has a low viscosity, it can also be expected to improve printing properties on the base film F.

Examples of the ultraviolet curable resin include polyester acrylate, epoxy acrylate, polyurethane acrylate, polyether acrylate, and polyol acrylate.

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 release layer 13, the ink layer 14, and the adhesive layer 15 are sequentially laminated on the base film F by printing means such as silk printing, gravure printing, barcode printing, knife foot, etc. Among these methods, when applying letters or two-tone or three-tone designs to the fairing 11 of the motorcycle l, silk printing is preferable from the standpoint of cost and quantity.

Next, using the base film F on which the pattern layer 16 having the above-described structure is printed, the procedure of applying the coating to the outer surface of the fairing 11 by the method of this embodiment will be explained in FIGS. 4(a) to (4). The explanation will be based on e).

First, the fairing lla is positioned on the left side of the vacuum container 22 in the figure using the support rod 20, and set with one surface (left side) of the fairing lla facing upward. Next, the base film F on which the above-described pattern layer 16 is printed is placed in the left side of the vacuum container 22 so that the pattern layer 16a to be shot for the first time faces the fairing lla. The inside of the vacuum container 22 is airtightly divided by the base film F. At this time, the base film F and the surface Wa of the fairing lla on which the painting is to be applied are set so as to be substantially parallel to each other.

In addition, the pattern layer 16b printed on the right side of the base film F (the part to be shot for the second time) is attached to the vacuum container 2.
The box 24 is housed inside a box 24 whose upper part is covered with a heat insulating cover 23 so as not to be exposed inside the box 24. As will be described later, the box 24 is made of a material having a sufficiently strong force so as not to be deformed even if a pressure difference occurs between the upper and lower parts of the vacuum container 22.

Next, after reducing the internal pressure of each of the divided chambers 22a and 22b formed in the vacuum container 22 by the base film F to the same vacuum pressure, the base film F is attached to a heater provided on the top of the vacuum container 22. 25 to heat and soften. At this time, the pattern layer 16b that is shot the second time is not heated because it is covered with the heat insulating cover 23.

The heating temperature at this time is the base film F as described above.
When vinyl chloride is used for
Although the temperature is set to a concave circle of C, it is optimal to set it to a range of 100'C to 140C, considering the activation state of the adhesive layer 15.

After that, the fairing lla is raised along with the support 20 by a lifting means (not shown) and brought into light contact with the base film F (see FIG. 4(c)), and the side on which the fairing lla is not disposed is divided. By opening the chamber 22a to the atmosphere and increasing its internal pressure, as shown in FIG. 4(d)
As shown, attach the base film F to the fairing lla
The pattern layer 16 is adhered to the fairing lla by the adhesive layer 15 by being brought into pressure contact with the outer surface Wa of one side of the fairing lla.

Using the method described above, the base film F is pressed onto one side Wa of the fairing lla.

Next, after opening the inside of the vacuum container 22 to the atmosphere, the fairing lla is lowered by a predetermined amount using a lifting means and rotated 180 degrees, so that the opposite side of the fairing lla, wb, is directed upward and is flush with the wb is arranged almost parallel to the base film F. Then, the portion of the base film that was shot the first time is cut. At the same time, the base film F is shifted to the left in the figure, and the pattern layer 16b to be shot for the second time is reset so as to face the fairing lla.

Repeat the above steps (Fig. 4(b) to (d)) and apply the base film F to the other side wb of the fairing lla.
Crimp.

Using the above procedure, the hemisphere film F is applied to both sides of the fairing lla.

Next, after this fairing lla is taken out from the vacuum container 22, it is also peeled off from the base films F pasted on both left and right sides of the fairing lla.

In this state, the outer surface Wa- of the fairing lla
The pattern formed by the ink layer 14 is transferred to Wb, and this pattern is attached only to the outer surface of the fairing lla, so that when the base film F is peeled off,
As shown in Figures 5 and 6, the fairing lla
The patterns located in the side opening 12 (opening for blinker insertion) formed in the side part and the part protruding from the peripheral edge of the fairing lla are removed while remaining attached to the base film F. Furthermore, when the base film F is pressure-bonded to the fairing 11a, the flexibility of the base film F causes the pattern layer 16 to slightly wrap around the periphery of the opening and the outer periphery of the fairing lla. Since the sides are covered, the cut-off end of the pattern is located on the back side of the fairing lla, and the appearance is not impaired.

After such a removal operation of the base film F, the peeling layer 13 exposed on the fairing lla is irradiated with ultraviolet rays to harden the peeling layer 13. Here, the ultraviolet irradiation is performed using, for example, a high-pressure mercury lamp, a metal halide lamp, etc., and the irradiation amount is 100 mJ/
cm' or more, especially 200aJ/cm2 or depending on the conditions, looOmJ/ci'' to 2000mJ/al
Il' 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.

In addition, since the process of press-bonding the base film F to the fairing lla is performed in two steps as described above, the base film F is placed almost parallel to the plane Wa-Wb on which the pattern of the fairing lla is to be applied. When arranged in parallel in this way, the base film F and the pattern layer 16 hardly elongate during pressure bonding, thereby making it possible to provide highly accurate decoration.

It should be noted that each of the embodiments described above is an example, and the present invention is not limited to these embodiments, 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.

Furthermore, in the above embodiment, a single base film F was used in which the pattern layers 16a-16b to be applied to both the left and right sides of the fairing lla were printed to transfer the pattern layer 16.
Without being limited to this, two types of base films are prepared separately, one for painting on the left side of the fairing lla, and another for painting on the right side, and these are individually placed in a vacuum container. You may also set it to 22 and perform the painting. However, it is more advantageous to print left and right patterns on one base film in terms of simplifying the printing process. Furthermore, the number of times of crimping is not limited to two, but may be three or more times.

Note that, as in the above embodiment, not only the case where the heat insulating cover 23, the box 24, etc. are used, but also the case where a single printed film of an integral multiple (for example, twice the size) of the size is used without using the heat insulating cover or box. It can be carried out by simply carrying out transfer molding in two steps, and in this case, it is effective in that the film printing process can be simplified.

Further, the present invention is not limited to the fairing 11 of the motorcycle 1, but can also be applied to side covers and other exterior parts of motorcycles, tricycles such as buggies, four-wheel vehicles such as passenger cars, and even, Application to exterior parts of ships is also possible.

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, according to the method for applying the outer surface of an exterior component according to the present invention, a pattern layer consisting of at least three layers, a release layer, an ink layer, and an adhesive layer, is provided on the outer surface of the exterior component. After pressing the base film printed with the pattern layer to the exterior component with the pattern layer facing the exterior component, the base film is peeled off and the pattern layer is transferred to the outer surface of the exterior component. Since the surface of the layer is hardened, it is possible to apply the painting to the set position of the exterior part, and also when painting across discontinuous parts formed on the exterior part. , the positional shift between the patterns between the ends of the discontinuous portion is suppressed to prevent the appearance from being impaired.

In addition, by one operation of peeling the base film,
When an opening is formed in the exterior part, it is possible to open the opening and remove the protruding part from the periphery, simplifying the delivery work,
In addition, the weather resistance and scratch resistance of the surface of the pattern after application can be improved.

In addition, since the pattern layer printed on the base film is crimped onto the exterior parts in multiple steps, the crimped surface can be kept almost parallel to the base film, thereby creating a three-dimensional shape. Highly accurate payments can be made even with

[Brief explanation of the drawing]

FIG. 1 is a diagram shown for detailed explanation of the present invention, FIG. 2 is a side view of a motorcycle to which an embodiment of the present invention is applied,
FIG. 3 is an enlarged vertical cross-sectional view showing the structure of the base film used in the same example, FIGS. 4(a) to (e) are diagrams explaining the painting procedure, and FIGS. It is a process explanatory diagram of an example, and is a diagram corresponding to a sectional view taken along the line ■-■ in FIG. 2. l...Motorcycle, l...Fairing, 13...Peeling layer, 14...
... Ink layer, 15 ... Adhesive layer, 16
...Picture layer, 22...Vacuum container,
25... Heater, F... Base film.

Claims (1)

[Claims] A base film, on which a pattern layer consisting of at least three layers, a release layer, an ink layer, and an adhesive layer, is printed on the outer surface of an exterior component is pressure-bonded with the pattern layer facing the exterior component. Thereafter, the base film is peeled off, the pattern layer is transferred to the external surface of the external component, and the surface of the pattern layer is then subjected to a hardening treatment. A method for painting the outer surface of an exterior component, characterized in that the step of crimping the base film to the exterior component is divided into multiple steps.