JPS59169575A - Exfoliation of paint - Google Patents

Abstract

PURPOSE:To accurately and rapidly remove paint only to be removed, by spraying fine particles onto an objective body coated with paint to peel off the paint from a predetermined part. CONSTITUTION:Colored UV resin 3 is applied onto the entire surface of a glass plate 2 and cured by ultraviolet irradiation from an ultraviolet applicator 4. Then, a steel template 5 in which cut-out parts 5a are latticedly formed is stuck fast onto the resin 3, and the surface of said resin 3 only to be peeled off is exposed through the cut-out parts 5a while covering the other surface part with the template 5. Fine particles such as fine sand or cast iron particles are sprayed thereto from the upside by a sprayer 6 to peel off the unnecessary UV resin 3, and then the template 5 is taken away. Thus, a decorative plate 1 on which a stripped pattern is formed by the colored UV resin 3 is obtained. Further, the fine particles to be sprayed has a particle size of about No. 300-600.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing paint.
The above paint is peeled off.

BACKGROUND OF THE INVENTION Personal items such as decorations and electrical appliances are often painted with paint in order to protect their surfaces and improve their aesthetics. Conventional methods for painting objects with desired patterns such as figures and letters include, for example, attaching a template with the desired pattern cut out to the painting surface, and spraying the paint with a machine, or applying the paint with a brush. However, with this method, the paint flows on the painted surface and the pattern tends to collapse, especially when the mold plate is removed from the painted surface after painting is finished. Until the paint has hardened to a certain extent, it is necessary to prevent the paint from flowing and distorting the pattern.
Workability was poor because the object had to be left still. Furthermore, the paint also adheres to the mold during painting, making it impossible to use the mold many times. Furthermore, there are cases where painting an object fails and it is desired to remove the applied paint. Conventionally, in such cases, a method of wiping off the chemical paint with a solvent has been adopted. However, this method not only has poor workability and requires time and effort to remove, but also tends to cause the painted surface to deteriorate due to the solvent. Furthermore, it is difficult to accurately remove only the portions that need to be removed, and portions that do not need to be removed tend to be wiped off at the same time. A method has also been adopted in which the areas where the coating failed is scraped off using a knife or the like, but this method also has the same drawbacks as mentioned above, especially when scraping off the paint, the painted surface is easily damaged. In addition, in recent years, radiation-cured resins such as ultraviolet (TRV)-cured resins and IP electron beam (EB)-cured resins have been used as coating materials for various articles in place of general chemical coatings. Resin has continuous hardening properties and has extremely strong physical strength after hardening, but on the other hand, there is no solvent that can dissolve it and its physical strength is extremely strong, so it is extremely difficult to scrape it off with a knife, etc. If painting with mw resin fails, there is no effective means to remove it, and the article has the drawback of losing its commercial value.

Therefore, the present invention has been made in consideration of the above points, and is designed to peel off the paint by spraying fine particles onto the paint applied to the object using a machine. This makes it possible to accurately and quickly remove only the paint that needs to be removed.
In particular, it is possible to easily remove the radiation-cured resin, which has been difficult to remove in the past.0 Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a decorative plate formed by the present method described later, and a striped pattern is formed on a glass plate 2 using colored UV resin 3. In forming this decorative plate 1, as shown in FIG.
The trys fat 3 is cured by irradiating it with ultraviolet rays. Next, as shown in FIG. 2(b), a steel mold plate 5 (see FIG. 3) in which cutouts 5a are formed in a lattice shape is closely attached to the resin 3, so that only the surface to be peeled and removed is removed. It is exposed from the cutout part 5a, and the other surface is covered with a mold plate 5, and from above, fine particles such as fine sand and pig iron particles are sprayed from above using a machine 6.The diameter of such fine particles is 300 to 600. Use. The fine particles hit the UV resin 3 exposed from the cutout portion 5a and partially peel off the UV resin 3. Once the unnecessary IJY resin 3 is peeled off and removed in this way, softening of the particles is stopped and the mold plate 5 is removed (Fig. 2(c)).
Reference) 0 The above decorative plate 1 is formed in this manner, and since only the unnecessary portions of the UV resin 3 are peeled off and removed accurately and quickly, the finished pattern is extremely good. In addition, the template 5 can be used many times until it wears out.
Further, all the steps from the coating process to the peeling process of the U4 resin 3 can be performed automatically, and the workability is extremely high.

FIGS. 4(a) to (-) show other embodiments of the present invention. In FIG. 4(-), two UV resins 12 and 13 of different colors are placed on the synthetic resin plate ll. Layered.

In forming it, UV resin 12 is first painted on the synthetic resin plate 1, and after it is cured by irradiating it with ultraviolet rays, VV@resin 13 is again painted on the top surface, and it is irradiated with ultraviolet rays. Next, the mold plate 14 with the cutout portion 14a of the desired shape is brought into close contact with the upper surface of the mold plate 14, and fine particles are sprayed with a scoop 6 to form the upper layer.
Only the resin 13 is partially peeled off and the entire lower layer UVfd resin 12 is exposed (see FIG. 4(b), (,)). Next, the mold plate 15 in which the cutout part 15m smaller than the cutout part 14a is formed is brought into close contact with the mold plate 15, and the exposed part of the lower NUv resin 12 is partially peeled off and removed by blowing fine particles through it again. is completed (Fig. 4(d), (
-)).

FIGS. 5(a) and 5(b) show another embodiment of the present invention, in which a mold plate 2o in which an rFJ-shaped cutout 20a is formed is placed on an object 21 using a hardened EB resin. 22
The surface layer of the exposed portion of the EBm fat 22 is peeled off and removed by applying fine particles to the surface of the EBm fat 22, thereby forming the letter "A". In addition, FIGS. 6(a) and 6(b) show that an rl'J-shaped template 30 is brought into close contact with the EB resin 32 that has been cured on the object 31, and fine particles are ejected onto the exposed portion of the SIB resin 32. The above-mentioned embodiments, in which six characters rFJ are formed by peeling off the surface layer of 0, are advantageous when desired characters are formed on the outer surface of the main body case of various electrical devices, for example. Moreover, FIGS. 7(a) and 7(b) show a large number of small holes 40a.
The mold plate 40 on which has been formed is brought into close contact with the IDBW resin 42 that has been hardened and formed on the object 41, and fine particles are sprayed onto it.
The surface layer of the B resin 42 is partially peeled off to form an uneven pattern on the painted surface, and this method forms relatively minute anti-slip unevenness on the grip of an electric shaver, microphone, etc. This is advantageous in such cases.

Furthermore, as shown in FIG. 8(a), fine particles are sprayed onto the EB resin 52 coated on the entire surface of the object 51 without intervening a template, and only the surface layer is peeled off over the entire surface. , 1C as shown in Figure 18(b)
The surface of the B resin 52 can be roughened to prevent slipping when held in the hand, and to improve aesthetic appearance.

As described above, the method according to the present invention is capable of forming arbitrary shapes on the surface of the object by adjusting the presence or absence of a template, the shape of the template, the procedure for spraying fine particles, the amount of paint peeled off, etc. It is possible to form painted patterns such as letters.

Although each of the above embodiments describes the case of forming a desired pattern on an object, the method according to the present invention can also be applied to the case of peeling off and removing paint that has failed in coating. The embodiment will be explained below.

In FIG. 9, 62 is TTV & resin that was mistakenly painted on the surface of the object 61. To remove this, spray fine particles on the entire surface of the UV resin 62 without using a template. All you have to do is peel it off.

In addition, if you want to locally peel off and remove only the failed part,
As shown in FIG. 10, the portion 7 of the UV resin 72 that is not removed
2a may be covered with a template 70, exposing only the portion qkb to be removed, and then peeling and removing by spraying fine particles.

In each of the above examples, the type of fine particles, average particle size,
The hardness, amount of spraying, or pressure of spraying by the spraying machine 6 can be freely determined depending on the type of paint to be removed, its thickness, the material of the object, or the purpose of removing the paint. It is something that should be done.

Furthermore, the method according to the present invention exhibits its advantages particularly for radiation-cured resins such as UV resins and EBL resins, and therefore, although the above embodiments were explained using UV resins and EB resins as examples of paints, The method according to the present invention can also be applied to the peeling of general chemical materials other than radiation-cured resins. - As explained above, the method according to the present invention
Since the spraying device 6 is used to spray fine particles onto the paint 3 and peel off the paint 3, the removal work can be done quickly and easily. Only paint can be removed accurately. Furthermore, as exemplified in each of the above embodiments, by variously devising the peeling process, the planar shape of the part to be peeled and the peeling depth can be freely changed to form an arbitrary paint pattern on the object. be able to. Furthermore, it has unique effects such as being able to easily peel off and remove radiation-cured resin 3, which was extremely difficult to remove in the past.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of a decorative board, Fig. 2 (a), (b), and (C) are side views of the decorative board during work, and Fig. 3 is a mold. Perspective view of the plate, Figure 4 (a), (b)
), (C), (d), (e) are side views of other embodiments of the present invention, FIGS. 5(a), (b) and 6(a), (b).
) are respectively perspective views of still other embodiments of the present invention;
Figures (-) and (b) are a perspective view and a sectional view of still another embodiment of the present invention, and Figures 8 (&) and (b) are a side view and a side view of still another embodiment of the first baby of the present invention. 9 and 10 are side views of still other embodiments of the present invention, respectively. 2.11, 21, 31, 41, 51, 61...Object 3.12.13.62.72..., UV resin 2
2.32.42.52...EB! Applicant Kyushu Hitachi Maxell Co., Ltd. Agent Patent Attorney Toshiyuki Takamatsu Figure 1 Naototsu Figure 4 Figure 5 6 1A (0) (b) 1 (b) Figure 7 Figure 8 (0) 11 Penalty . °゛・, Grass 5/' Figure 9

Claims (3)

[Claims] (1) A paint peeling method in which the paint 3 coated on the object 2 is coated with fine particles using a spraying machine 6, and the paint 3 is peeled off. (2) The paint peeling method according to claim 1, wherein the paint 3 is a radiation-cured resin. (3) The paint according to claim 1, wherein a template 5 is brought into close contact with the paint 3, and a spraying device 6 is used to eject fine particles, thereby peeling off the paint 3. Peeling method.