JPH0647774A - Method for manufacture molded product for electric decoration - Google Patents

Abstract

PURPOSE:To make a molded product for electric decoration of any cubic form where a pattern is drawn. CONSTITUTION:A transfer layer 12 consisting of a peel-off layer, a pictorial pattern layer and an adhesive layer is formed on a base film 11 consisting of polyethyleneterephthalate to obtain a transfer film 1. The transfer film 1 is sandwiched between the halves of a die for forming an expansion plate with a folding part and an engagement part and, molten light-permeable molding resin is injected into the die 3 to obtain the expansion plate and at the same time, the transfer layer 12 is bondeel to the surface of the expansion plate. Next, the base film 11 is peeled off the surface of the expansion plate. Finally, the engagement parts of the expansion plate with the adhered transfer layer 12 are fitted into each other to obtain a box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a molded article for electric decoration used for a display of a vending machine such as cigarettes and juice.

[0002]

2. Description of the Related Art The conventional method for producing a molded article for electric decoration includes the following. (1) A method of forming a three-dimensional box-shaped or cylindrical molded product by injection molding using a translucent resin, and then directly forming a design on the surface of the molded product by a coating method, a printing method, or a transfer method.

(2) A method of forming a translucent molded product by injection molding and then winding a milky white resin sheet having a pattern formed on the surface of the molded product.

(3) A method for forming a box by forming a design by printing on the surface of a resin sheet having a glue allowance at the time of box making, bending the necessary portion, and adhering the glue allowance with an adhesive

[0005]

However, in (1),
Due to the printability of the design, it is limited to molded products with a surface shape such as a flat surface or a flat curved surface, so it cannot be applied to any decorative molded product with a three-dimensional shape. Further, a pattern printing process and a transfer process are required in a process different from the molding process of the molded product, resulting in poor production efficiency.
Further, since the top surface, bottom surface, side surface, front surface, etc. of the molded product are separately formed by a printing machine or a transfer machine, it is not possible to accurately register the design and it takes time and labor.

In the case of (2), a special milky white resin sheet must be prepared, and a molding step for the molded product, a printing step for the resin sheet, and a winding step are required.
Production efficiency is poor. Also, if a single resin sheet is wrapped around the top, bottom, body, etc., the resin sheet will be wrinkled and a pattern cannot be formed neatly.

Further, in (3), since the step of forming a pattern on the resin sheet by printing and the step of adhering the margin of glue have to be performed, the production efficiency is poor.

An object of the present invention is to solve the above problems, and to form a development plate of a molded article for electric decoration on which a pattern is formed by molding simultaneous transfer to form a box for the development plate. Thus, it is an object of the present invention to efficiently produce a three-dimensional shaped molded article for electric decoration in which a pattern is formed.

[0009]

In order to achieve the above-mentioned object, a method for producing a molded article for electrical decoration of the present invention is to fold a transfer film having a transfer layer having a pattern layer formed on a base film, by folding the transfer film. It is sandwiched in a mold that molds a development plate having a fitting part and a fitting part, and molten translucent molding resin is injected into the mold to form the development plate and at the same time bond the transfer layer to the surface of the development plate. The base film was peeled off to form a development plate on which a transfer layer was formed, and fitting portions were fitted together to form a box.

Further, according to the method for producing a molded article for electrical decoration of the present invention, an insert film having a pattern layer formed on a base film is placed in a mold for molding a development plate having a folding portion and a fitting portion. The translucent molding resin that was sandwiched and melted was injected into a mold to mold the expansion plate, and at the same time, an insert film was adhered to the surface of the expansion plate, and fitting parts were fitted together to form a box.

The present invention will be described in detail below with reference to the drawings. First, a method of manufacturing a molded article for electrical decoration using the transfer film 1 will be described. The transfer film 1 is formed by forming a transfer layer 12 having a pattern layer 13 on each side of a three-dimensional product desired to be a display on a base film 11. The base film 11 may be one that is usually used as the base film of the transfer film 1.
It is recommended to use a plastic film such as polyethylene terephthalate. As the transfer layer 12, there is one in which a release layer, a pattern layer 13, an adhesive layer and the like are sequentially formed from the base film 1 side. The peeling layer is for improving the peelability between the base film and the transfer layer 12 and for protecting the pattern layer 13, and is formed on the entire surface of the base film 1 by a usual forming method such as printing. The pattern layer 13 is on the surface of the development plate,
To form patterns, paintings, logos, letters, symbols, etc.
It is formed by a usual forming method such as printing. Pattern layer 13
May have a metal layer formed by vacuum vapor deposition. The adhesive layer is for adhering the transfer layer 12 to the surface of the expansion plate at the same time as forming the expansion plate, and uses a resin of the same type as the resin forming the expansion plate 2 by a normal forming method such as printing. Alternatively, it is partially formed.

First, the transfer film 1 is folded into a folding portion 21.
It is sandwiched in a mold 3 for molding a development plate 2 having a fitting portion 22 (see FIG. 1).

The transfer film 1 may be continuously fed into the mold from a state of being wound into a roll, and may be positioned with respect to the mold 3 by a positioning device (not shown) or the like.

When the mold 3 is closed, the mold 3 has a portion 31 for forming a folded portion and a portion 3 for forming a fitting portion inside the mold.
A cavity 30 for forming a spread plate composed of 2 is formed, and the molding resin 20 is injected from the injection port 34 into the cavity 30 and filled to form the molding resin 20.
Is an arbitrary expansion plate shape (for example, FIG. 5, FIG. 6, FIG. 9, FIG.
0, FIG. 11). When the surface of the mold 3 to which the transfer film 1 is closely attached has large unevenness, it can be brought into close contact with the unevenness by using a suction device or a heating device (not shown).

Next, the molten translucent molding resin 20 is injected into the mold to mold the expansion plate 2 having an arbitrary three-dimensional shape, and at the same time, the transfer layer 12 is adhered to the surface of the expansion plate (see FIG. 2). . The molding resin 20 is a resin that exhibits translucency and light guiding properties after molding, and has a high refractive index such as an acrylic resin, a polyester resin, or a polycarbonate resin and a high internal reflectance, or these resins. A resin added with a fluorescent pigment or the like may be used.

After the molding resin 20 is cooled and solidified, the base film 11 is peeled off from the surface of the molded expansion plate 2 and the transfer layer 12 is formed into an arbitrary three-dimensional expansion plate 2 on the surface.
Is obtained (see FIG. 3).

The three-dimensional expansion plate 2 includes a front portion 2
4, a side surface portion 25, a top surface portion 26, a bottom surface portion 27, and an edge portion 23 that is joined to each other when the box is manufactured, and there is a box-shaped box (see FIG. 5). Alternatively, there is one that is made up of a top surface portion 26, a bottom surface portion 27, a cylindrical body portion 28, and an end edge portion 23, and is made into a cylindrical box (FIGS. 9 and 10).
reference). Alternatively, there is a box-shaped box made of a top surface portion 26 and six side surface portions 25 (see FIG. 11). Each of the expansion plates 2 has a folded portion 21 formed at the joint between the respective surfaces, and a side surface portion 25 and an end edge portion 23 of the top surface portion 26 formed with a fitting portion 22. Folding part 21
Is a shape that is easily bent as a thin portion or a cut portion. The fitting portion 22 may be a combination of a protrusion and a hole, a combination of a tenon and a tenon (see FIGS. 6 and 7).

Next, the fitting portion 22 of the expansion plate 2 is fitted to form a box. The folding portion 21 of the spreading plate 2 on which the transfer layer 12 is formed is folded to make the top surface portion 26, the bottom surface portion 27, and the side surface portion 25 stand up with respect to the front surface portion 24. By fitting the fitting portions 22 formed on the end edge portions 23, the end edge portions 23 are joined together and fixed,
A three-dimensional molded article for electric decoration is obtained (see FIG. 8).

In the present invention, there is a method for producing a molded article for electrical decoration using the insert film 14. In the method using the insert film 14, the expansion plate 2 is molded and box-formed in the same manner as when the transfer film 11 is used, but the base film 11 of the insert film 14 is the expansion plate 2 after the expansion plate 2 is formed. 2 is not peeled off from the surface. The insert film 14 may be cut into a required shape in advance before being sandwiched in the mold 3, or may be trimmed at the same time as being sandwiched in the mold 3. Insert film 1
4 is adhered to the spreading plate 2 together with the base film 11 and covers the folding portion 21, so that the folding portion 21 can be protected.

[0020]

[Function] A pattern on each side of the display product is formed on one transfer film or insert film,
Simultaneously with the molding of the expansion plate, the design is adhered to the molded product to form a box, which simplifies the process. Further, it is not necessary to position the transfer film or the insert film on each surface of the three-dimensional molded product. Further, since the fitting portion can be formed at the end edge portion of the expansion plate at the same time when the expansion plate is formed, the end edge portions can be easily connected to each other, which facilitates box making.

[0021]

The method for producing a molded article for electrical decoration of the present invention is
Using a transfer film on which a pattern on each side of a three-dimensional product is formed on the base film, after simultaneously performing the formation of the development plate and the design of the molded product for three-dimensional electrical decoration, The box was put into a box, and a three-dimensional molded article for electric decoration in which a pattern was formed on each surface of the molded article was obtained.

Therefore, since the pattern can be formed on the molded product at the same time as the molded product is formed, the process is simplified and the production efficiency is good.

Further, since the designs can be formed on the respective surfaces of the molded product at the same time, it is not necessary to register the designs on the respective surfaces, which saves labor.

Further, since the design can be formed on the development plate of the molded product for electric decoration and the fitting portion can be formed on the development plate at the same time, the expansion plate on which the design is formed can be efficiently box-made, and The production efficiency of molded products is good.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing one step of a method for producing a molded article for electric decoration of the present invention.

FIG. 2 is a cross-sectional view showing a step in the method for producing a molded article for electric decoration according to the present invention.

FIG. 3 is a cross-sectional view showing one step of the method for producing a molded article for electrical decoration of the present invention and the molded article to which the transfer layer is transferred.

FIG. 4 is a cross-sectional view showing a molded product to which an insert film obtained by the method for manufacturing a molded product for electrical decoration of the present invention is adhered.

FIG. 5 is a perspective view showing an example of a front side of a spread plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 6 is a perspective view showing an example of the back side of a spreading plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 7 is a perspective view showing an example of a fitting portion of a spreading plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 8 is a perspective view showing a box made of a spread plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 9 is a perspective view showing an example of a development plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 10 is a perspective view showing an example of a spread plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 11 is a front view showing an example of a development plate obtained by the method for producing a molded article for electrical decoration of the present invention.

FIG. 12 is a perspective view showing a box made of a spread plate obtained by the method for producing a molded article for electrical decoration of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transfer film 11 Base film 12 Transfer layer 13 Design layer 2 Development plate 21 Folding part 22 Fitting part 23 End edge part 24 Front part 25 Side part 26 Top surface part 27 Bottom part 28 Cylindrical body part 3 Mold 30 Cavity 31 Fold part Portion forming 32 32 Portion forming fitting 33 Injection port

Claims (2)

[Claims] 1. A translucent molding in which a transfer film in which a transfer layer having a pattern layer is formed on a base film is sandwiched in a mold for molding a development plate having a folding portion and a fitting portion, and which is melted. The resin is injected into the mold to form the expansion plate, and at the same time, the transfer layer is adhered to the surface of the expansion plate, the base film is peeled off to form the expansion plate on which the transfer layer is formed, and the fitting parts are fitted together. A method for producing a molded article for electric decoration, which comprises box-making. 2. An insert film in which a pattern layer is formed on a base film is sandwiched in a mold for molding a development plate having a folding part and a fitting part, and a molten translucent molding resin is molded into the mold. A method for manufacturing a molded article for electrical decoration, which comprises injecting into the interior, molding the expansion plate, and at the same time adhering an insert film to the surface of the expansion plate and fitting the fitting parts together to form a box.