JPS6230902B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a molding method, and more particularly to a molding method in which a colored surface is formed on the surface of a molded metal plate.

Conventionally, as a method for forming a colored surface on the surface of a molding such as a vehicle pillar cover made of a metal plate material, a metal plate material 1 is formed into a predetermined shape as shown in FIG. A method has been proposed in which a color tape 2 made of, for example, PVC tape is adhered to the surface of a metal plate 1 to form a molding as shown in FIG. However, according to this method, since the color tape is attached to the surface of the metal plate 1 which has a complicated shape, the color tape 2 and the metal plate 1 are
Air bubbles may be generated between the tape 2 and the adhesive position of the tape 2 may be shifted, resulting in an unsightly appearance.
Furthermore, if oil remains on the surface of the formed metal plate before the color tape 2 is attached, the attached color tape may peel or bulge. In addition, a method has been proposed in which paint is applied to the surface of the formed metal plate after forming it, but this method has the disadvantage that dust may adhere to the painted surface of the formed metal plate, which prevents the painted surface from becoming a smooth surface. have. There is also a method of treating the metal plate with dichromic acid or the like before painting, but this increases the cost. Furthermore, it has the disadvantage that a part of the painted surface peels off when the car is washed or the like.

The purpose of this invention is to coat the surface of a flat metal plate with a colored synthetic resin tape that cannot be easily peeled off from the metal plate, and to coat the surface of the colored tape with a colored tape that cannot be easily peeled off from the colored tape. After forming a member with a synthetic resin film on which the surface of the transparent colored tape can be seen by press processing into a shape with a groove where the metal plate side is on the inside and the synthetic resin film side is on the outside. This method eliminates the above drawbacks by peeling off only the synthetic resin film to expose the colored tape, and will be described in detail below using examples.

4 to 11 are process diagrams showing an embodiment of the molding method according to the present invention. In the present invention, first, the surface of a flat metal plate 11 made of stainless steel or the like is colored. A color tape 12 made of a PVC tape or the like is attached, and a transparent protective tape 13 made of a polyethylene resin film or the like is further attached to the surface of the color tape 12. In this case, color tape 12
is attached to the metal plate 11 with an adhesive that does not easily peel off, and the protective tape 13 is attached to the color tape 12 with an adhesive that can be easily peeled off. Color tape 12 and protective tape 1
For example, as shown in FIG. 5, the rolled flat metal plates 11, color tape 12, and protective tape 13 may be simultaneously overlapped and guided to adhere to each other. ,
Alternatively, as shown in FIG. 6, the rolled color tapes 12 and protective tapes 13 are drawn out simultaneously on the surface of the metal plate 11 of a required length so that they are stacked on top of the metal plate 11. However, as shown in FIG. 7, the color tape 12 and the protective tape 13 that have been attached to each other are rolled up in advance.
3 and the laminated tape 14 may be attached to the surface side of the metal plate material 11. Next, the flat member in which the three parts are integrated is pressed into shapes a, b, which can be used as moldings for vehicle pillar covers, etc., as shown in FIGS. 8 to 11. That is, it is molded into a shape having a groove with the metal plate 11 side being inside and the protective tape 13 side being outside, and after this molding, the protective tape 13 on the front side is peeled off as shown in FIGS. 10 and 11, thereby molding. Completed as.

According to the above method, the colored tape 12 is pasted in advance to the flat metal plate material 11 that does not have a complicated surface shape, so that bubbles, bulges, etc. do not occur between the colored tape and the metal plate material, and the colored tape The adhesion position is accurate and the appearance of the molding is excellent. Furthermore, in the past, the process of attaching a metal plate molded into a predetermined shape and a color tape molded in the same manner was extremely complicated, but with the present invention, such a complicated process can be eliminated. It becomes possible to omit it, and mass production can be achieved. In addition, during the pressing process, no oil will intervene between the metal plate material 11 and the colored tape 12, and since they are inevitably compressed between the punch and die of the press, the adhesive strength of the colored tape 12 can be improved. It is possible to increase the battery life and extend the lifespan. In addition, in the pressing process, the protective tape 13 acts as a cushion during the pressing process, and even if a flaw occurs, this flaw will only occur on the protective tape, and the protective tape will be peeled off in the subsequent process, so no flaw will occur on the color tape. The appearance of the color tape can be improved without any problems. Furthermore, by making the protective tape transparent, even if an abnormality occurs in the pressing process and a flaw occurs on the color tape 12, it can be observed without peeling off the protective tape 13, so the abnormality can be detected immediately after pressing. Able to make decisions and take prompt action.

As explained above, according to the present invention, a colored tape made of synthetic resin that cannot be easily peeled off is applied to the surface of a flat metal plate, and the colored tape is coated on the surface of the colored tape. A member made of a synthetic resin film coated with a transparent colored tape that can be easily peeled off and whose surface is visible is press-processed to form a groove where the metal plate side is on the inside and the synthetic resin film side is on the outside. After molding into a shape, only the synthetic resin film described above is peeled off to expose the colored tape, so that unlike conventional metal plates that have been molded into a predetermined shape, the tape can be molded into the same shape as the metal plate. It is possible to omit the complicated process of applying a colored tape, which makes it possible to improve the appearance and improve mass productivity.

[Brief explanation of the drawing]

Figures 1 to 3 are process diagrams showing an example of a conventional molding method, and Figures 4 to 1 are process diagrams showing an example of a conventional molding method.
FIG. 1 is a process diagram showing an embodiment of the molding method according to the present invention. 11... Flat metal plate material, 12... Color tape, 13... Protective tape.

Claims (1)

[Scope of Claims] 1. A colored tape made of synthetic resin that cannot be easily peeled off from the metal plate material is adhered to the surface of a flat metal plate material, and the colored tape is easily attached to the surface of the colored tape. A member made of a transparent, removable colored tape coated with a synthetic resin film with a visible surface is molded by press processing into a shape with a groove where the metal plate side is on the inside and the synthetic resin film side is on the outside. 2. A method for forming a molding, characterized in that, after the above-mentioned process, only the synthetic resin film is peeled off to expose the colored tape. 2. The molding method according to claim 1, wherein the synthetic resin film is a polyethylene resin film.