JPH0154181B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a method for manufacturing a fruit-like container, and more specifically, the present invention relates to a method for manufacturing a fruit-like container, and more specifically, it is possible to create a fruit-like appearance by using two or more colors with a gradation area between the colors. The present invention relates to a method for manufacturing a fruit-like container in which the entire container has an appearance colored like a natural fruit, by drawing and forming a laminated sheet colored in such a way as to give the appearance of a natural fruit.

[Prior Art] Conventionally, containers for filling foods, especially foods that use fruit or flavor of fruits, have been used.
For example, packaging containers for various types of jellies, juices, frozen desserts, syrups, jams, etc. express the image of the food to be filled on the exterior of the container, clearly indicating the contents,
The containers are designed to give a sense of beauty and luxury. For example, containers may be made of transparent plastic so that the contents stored therein can be seen from the outside, containers may be colored in a single color that matches the flavor of the fruit they are filled with, or containers may be filled with filling material on the side of the container. Means such as printing a fruit that fits the object or forming the container itself into the shape of a fruit have been adopted.

[Problems to be Solved by the Invention] However, since the appearance of natural fruits such as apples and peaches has subtle changes in the color of the surface, it is difficult to change the appearance of such fruits by the above method. It is difficult to express on the surface of the container. That is, transparent containers do not give an image of the fruit itself, and colored containers are limited to monotonous colors and cannot express the complex shading and natural color changes of fruits. In addition, printing on the side of the container becomes impossible if the shape of the container becomes complex, and since it is not possible to print the entire surface of the container up to the bottom, it is not possible to print only on the simple shape or the side. It was limited to what it could do. Further, as for the method of forming the shape of a fruit on the container itself, it is insufficient to make the container resemble a natural fruit.

The present invention was created in order to solve the above-mentioned drawbacks, and an object of the present invention is to provide a method for manufacturing a fruit-shaped container in which the complex colors of natural fruits are displayed throughout the container's appearance. It is.

[Means for Solving the Problems] That is, the present invention involves pasting together a plastic film printed with shading areas of the same color but varying in density continuously and a colored thermoformable plastic sheet. By combining the colors of the plastic film and the color of the plastic sheet, a gradation area is interposed between the color of the plastic film and the color of the plastic sheet. Aperture ratio is 0.1~
This is a method for manufacturing fruit-like containers that is formed into a container shape so that the size of the fruit is 2.0.

In the present invention, the gradation portion refers to a portion where the color changes continuously in steps from one color to another.

[Function] In the first place, the present invention aims to artificially obtain the appearance of natural fruits, which is difficult to obtain in a state close to nature by printing, because of their various color changes.

The technical difficulty in reproducing the natural appearance of fruits is not only that natural fruits have a wide variety of colors, but also that the connection state of continuous gradual color changes between colors is extremely subtle, and printing This is something that is difficult to express.

In the present invention, the continuous gradual color change between the colors of natural fruits is expressed, although insufficiently, by a combination of shading areas printed in advance on a plastic film and a colored plastic sheet, and then stretched. By molding the container with a drawing ratio of 0.1 to 2.0, a container with a natural fruit-like appearance can be obtained.

The stretching of the gradation area in the present invention has the effect of blurring the continuous stepwise color change, making it extremely natural, and reproducing the gradation area similar to the gradation area of natural fruit. Eggplant.

The aperture ratio in the present invention is a condition for obtaining appropriate blurring. If the aperture ratio is too small, the blurring will be insufficient, and if it is too large, the blurring will be excessive. In either case, a natural fruit-like appearance will be obtained. will not be obtained.

[Example] Hereinafter, the present invention will be explained based on the drawings.

FIG. 1 is a perspective view showing one embodiment of a fruit-shaped container according to the present invention, and shows an apple-shaped pattern on the exterior of the container. FIG. 2 is a plan view showing the printed state of the plastic film before molding, FIG. 3 is a plan view of the laminated sheet, and FIG. 4 is a longitudinal sectional view taken along line AA.

The fruit-shaped container 1 according to the present invention has a red part 2a on the upper side of the side wall, and a yellow part 3 on the lower part and the bottom.
A is colored. Further, the core 5 is formed by printing on the bottom surface. Between the red part 2a and the yellow part 3a, there is a
A gradation portion 2c is formed in which the color changes continuously in steps from red-yellow to yellow-red to yellow, forming a color change and pattern close to a natural color in which red and yellow are intricately mixed.

The fruit-shaped container 1 according to the present invention is obtained by molding a laminated sheet 4 in which a printed plastic film 2 and a plastic sheet 3 are laminated together.

As shown in FIG. 2, the surface of the plastic film 2 is circularly printed, with a red part 2a' on the outer periphery and an uncolored transparent or translucent part 2 on the center side.
c, in the middle part between the two around it, there is a light and dark part 2d in which a red density difference is formed so that the density increases proportionally from the transparent or translucent part 2c to the red part 2a', and on the bottom surface there is a core 5'. are formed concentrically. The red part 2a' is printed entirely in red, and the dark and light part 2d is printed in a gradually lighter shade of red by decreasing the depth of printing, and the color of the colored plastic sheet that is attached to the base is proportional to the red density. The transparent or translucent portion 2c is a portion where the color of the colored plastic sheet is directly exposed. Further, the above printing method may be any one of gravure printing, offset printing, flexo printing, etc. The plastic film used has a thickness of 0.02 to 0.1 mm, and is made of a thermoformable material such as polystyrene resin, polyvinyl chloride resin, or polypropylene resin.

The colored plastic sheet 3 to which the plastic film 2 is attached is a colored sheet that gives a fruit-like appearance due to the color combination with the color printed on the plastic film 2. In this example, a yellow colored plastic sheet is used. A sheet is used. Furthermore, the colored plastic sheet is not limited to a single layer, and as long as it is a multilayer sheet and the color of the side to be bonded to the plastic film matches the desired purpose, the inside of the fruit-like container may have a white layer. However, it is preferable that the food container be white in color.

Colored plastic sheet 3 has a sheet thickness of 0.1
~1.5 mm of material that can be thermoformed such as polystyrene resin, polyvinyl chloride resin, polypropylene resin, etc. is used.

A laminated sheet 4 is obtained by bonding the printed surface of the plastic film 2 to a colored plastic sheet 3 by adhesion or thermal fusion with or without using an adhesive. As shown in Fig. 3, the laminated sheet 4 is printed in a circular shape, and the outer circumference shows the color of the plastic film, which is the red part 2a', and the center part shows the color of the colored plastic sheet. A yellow part 3a', a gradation part 2b' in which red and yellow are mixed between the two, and a core 5' on the bottom surface are formed concentrically to resemble the appearance of an apple. The laminated sheet colored as described above is drawn and formed into a cup shape (as shown in FIGS. 1 and 4) using a molding machine. The gradation part 2b' of the laminated sheet is stretched by drawing forming, and the obtained gradation part 2b
As the gradation portion 2b' is stretched and undergoes a blur-like change, the color connection becomes extremely natural. Therefore, fruit-like container 1
An appearance resembling a natural fruit, which cannot be obtained using conventional techniques, is formed on the surface of the product, and a sense of beauty and luxury is expressed.

The drawing ratio during molding is expressed as (depth of the container)/(diameter of the opening of the container), and the gradation part 2b that appears in the appearance of the fruit-shaped container is influenced by this drawing ratio,
Usually in the range of 0.1 to 2.0, preferably 0.3 to 1.5,
When the aperture ratio exceeds 2.0, the blur-like changes become extreme and do not resemble natural fruit-like color changes.
If it is less than 0.1, there will be almost no difference from the state expressed in the laminated sheet, and it will not be possible to obtain the natural fruit-like color change formed by stretching by drawing.

Next, other embodiments of the fruit-shaped container according to the present invention are shown in FIGS. 5 and 6. FIG. 5 is a plan view of a laminated sheet 4 with a color scheme similar to the appearance of grapes, and FIG. 6 is a longitudinal cross-sectional view of a fruit-shaped container formed from the laminated sheet 4.

In Figure 6, 3 is a plastic sheet colored blue, and 2 is a plastic film printed in red, which is printed on a transparent or translucent plastic film with three levels of red density difference. When pasted with a colored plastic sheet, a gradation area 2f' mixed with the underlying color appears. Therefore, due to this density difference, as shown in FIG.
b' and a gradation part 2f' between the two. When the laminated sheet 3 is drawn into a hemispherical shape as shown in FIG. 6, the gradation portions 2f' and the like are stretched to form an appearance similar to a natural grape having the gradation portions 2f. In this way, the appearance of the container that resembles that of various fruits can be formed by a simple method.

Furthermore, in the above embodiments, the printed surface of the plastic film and the plastic sheet were bonded together to maintain the glossy appearance, but in this case, the printed surface is drawn and formed so that it appears on the outer peripheral wall surface of the fruit-shaped container. It may be.

[Effects of the Invention] As explained above, according to the present invention, an appearance resembling a natural fruit is formed on the surface of the container, which improves the beauty and luxury of the container, and has the effect of being easily obtainable. .

[Brief explanation of drawings]

FIG. 1 is a perspective view showing one embodiment of a fruit-shaped container according to the present invention, FIG. 2 is a plan view showing the printed state of the plastic film of FIG. 1 before molding, and FIG. 3 is a plan view of a laminated sheet. Figure 4 is a vertical cross-sectional view along the AA line.
FIG. 5 is a plan view showing the color scheme of a laminated sheet according to another embodiment of the present invention before molding, and FIG. 6 is a longitudinal sectional view of a molded container using the laminated sheet of FIG. 5. 1... Fruit-shaped container, 2... Plastic film, 2a, 2a'... Red part, 2b, 2b', 2f,
2f'...Gradation part, 2c...Transparent or semi-transparent part, 2
d...Dark part, 2e, 2e'...Red purple part, 3...Colored plastic sheet, 3a, 3a'...Yellow part, 3b, 3b'...Bluish purple part, 4...Laminated sheet,
5,5'...core.

Claims (1)

[Claims] 1. A plastic film printed with shading areas of the same color but varying in density continuously,
By laminating colored thermoformable plastic sheets together, a gradation area is interposed between the color of the plastic film and the color of the plastic sheet, so that the laminated layer is colored in advance so as to have a fruit-like appearance after thermoforming. The sheet is stretched so that this gradation part is stretched and the drawing ratio is 0.1 to 2.0.
A method for manufacturing a fruit-shaped container, which comprises forming the container into a container shape.