JPS6038241B2 - Primary molded product of blow molded bottle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a multi-color molding machine that performs stretch blow molding using a bottomed cylindrical body formed by inserting a plurality of colored transparent rings of different colors into each other at their upper and lower ends. The present invention relates to a primary molded product of a horizontally striped mackerel body, and its purpose is to obtain a mackerel body having a horizontal striped pattern in various colors by using a small number of pieces of different colors.

Nowadays, synthetic resin shells with extremely rich colors in appearance are often used in containers for cosmetics, etc., mainly to enhance the design effect, but most of them are The design was still unsatisfactory because it was a single color or had no change in tone.

For example, even if an attempt was made to create a colorful multicolored horizontal striped pattern on the bell body, there were many disadvantages in blow molding, which is conventionally used when molding a bell body made of synthetic resin.

In other words, in secondary blow molding, all the colors to be obtained are required, and the boundaries between each color are not clear, so the sharpness is lost, so to speak, and furthermore, it is difficult to set each color during molding. . The present invention relates to a primary molded product used for a blow-molded conductor having a multicolored horizontal striped pattern, which is devised to eliminate the above-mentioned conventional drawbacks and inconveniences, and the present invention relates to a primary molded product used for a blow-molded conductor having a multicolored horizontal striped pattern. a ring, and an intermediate ring having iron tube pieces provided at the upper and lower parts;
A ring with a bottom having a drum cylinder piece on the top and a hemispherical bottom is injection molded, and each of the colored and transparent rings having different colors is pressed vertically and fixed together. It has a cylindrical configuration with a bottom.

Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 shows a piece P which is a primary molded product, in which a plurality of colored transparent rings 2 made of injection molded thermoplastic synthetic resin such as polyethylene terephthalate resin are placed above each other. The upper and lower parts are twisted together to form a cylinder with a bottom.

FIG. 5 is a perspective view of the bottomed cylindrical body P2 before molding, ie, a perspective view showing each ring 2 individually, and is composed of a top ring 20, an intermediate ring 21, and a bottomed ring 22.

Describing the desirable shape of one embodiment of these 11 rings 2, the uppermost ring 20 has the shape shown in the imaginary side in FIG.
A groove mouth part 4 is provided at the upper end through the collar part, and this groove □ part 4
A thread 1 is provided around the outer periphery of the upper half 20a, and the wall thickness a of the upper half 20a below the flange is the same as that of the lower half 20, which is a steel cylinder piece.
The upper half 20 is molded to have twice the wall thickness b' of b.
A step 20c is formed in the circumferential direction at the center of the inner circumferential surface between the inner circumferential surface a and the inner circumferential surface of the lower half portion 20b.

Further, in the illustrated embodiment, the length of the intermediate ring 21 is one and a half times that of the top ring 20, and is divided into equal parts: an upper unit joint piece 21a, a center part 21b, and a lower unit combined cylinder piece 21c.
shall be.

The thickness of the central portion 21b is the upper half 2 of the uppermost ring 20.
0a, and the inner diameter and outer diameter are also equal to the thickness a of the upper half 20.
a, but the upper joint tube piece 21a has an inner diameter equal to the inner diameter of the upper half 20a and an outer diameter of the lower half 20b of the uppermost ring 20.
and the wall thickness is equal to the wall thickness a' of the lower half part 20b, and are closely carried into the lower half part 20b.

The lower joint cylinder piece 21c of the intermediate ring 21 has an inner diameter equal to the outer diameter of the upper joint cylinder piece 21a, an outer diameter equal to the outer diameter of the central part 21b, and a wall thickness equal to that of the upper joint cylinder piece 21a. . Therefore, the upper joint piece 21a of the intermediate ring 21
A step 21d is formed on the outer circumferential surface between and the central portion 21b,
A step 21e is formed on the inner circumferential surface of the central part 21b and the lower iron joint cylinder piece 21c, and the upper joint cylinder piece 21a of the intermediate ring 21 is the lower half part 20 which is the joint cylinder piece of the uppermost ring 20.
By densely inserting iron into b, it is connected to the top ring 20. Next, the bottomed ring 22 has almost the same length as the top ring 20 and has a flush inner surface, but the lower half 22b has an almost spherical roundness, and the upper half has a joint shape. It has a wall thickness a twice that of the piece 22a, and this wall thickness a is equal to the wall thickness a of the uppermost ring upper half 20a, and the outer diameter of the upper half combined cylinder piece 22a is equal to that of the intermediate ring 21. It is equal to the inner diameter of the lower unit joint piece 21c.

Therefore, the bottomed ring 22 has an upper half joint piece 22a.
is the lower half 20b of the top ring 20 or the middle ring 21
By densely inserting iron into the lower part 21c of the top ring 20
Alternatively, it is connected to the intermediate ring 21, and the connected portions of each ring 2 are welded and integrated by means such as ultrasonic bonding, and formed into a bottomed cylindrical shape.

A plurality of transparent rings 2 having such a structure are each painted with an appropriate color, and the upper and lower ends of each of the transparent rings 2 are fitted with each other, so that the outer surfaces are flush with each other. Bottom cylinder P
2 to form a piece P which is a primary molded product.

Here, since the ring 2 is a colored transparent body as described above, the color of the top ring 20 appears alone in the top ring upper half 20a, and the middle ring upper part 21a appears in the top ring lower half 20b. Since they are inserted into the gap, a neutral color resulting from the combination of the top ring 20 and the middle ring 21 appears.

Similarly, the color of the intermediate ring 21 alone is in the intermediate ring center part 21b, the intermediate color of the intermediate ring 21 and the bottomed ring 22 is in the lower part 21c of the intermediate ring, and the color of the bottomed ring 22 alone is in the lower half part 22b of the bottomed ring. In this embodiment, by combining rings 2 of three different colors, it is possible to give the piece P a horizontal striped pattern of five different colors.

Furthermore, in this case, it is also possible to directly connect the top ring 20 and the bottomed ring 22, and three different color tones can be obtained with two rings 2 of different colors.
More color tones can be investigated by increasing the number of intermediate IJ rings 21, and in the above-described embodiment, the upper half 20a and lower half 20b of the top ring 20, the upper iron joint cylindrical piece 21a of the intermediate ring 21, and the center Since the length of the section 21b, the lower unit joint piece 21c, etc. are all the same, the width of each color cotton is uniform, but if you change these lengths appropriately, you can select pongee cotton or thick striped cotton. It can be done.

Next, FIG. 3 shows another embodiment of the present invention, in which a piece P as a primary molded product is a piece base P in the shape of a cylinder with a bottom.
It is constructed by attaching the bottomed cylindrical body P2 to the exterior.

The piece base P, which is injection molded from thermoplastic synthetic resin such as polyethylene terephthalate resin, has a flange around the outer periphery of the upper end, and a screw thread 1 for locking the cap is provided on the outer periphery above the flange. are provided around the area.

On the other hand, the bottomed cylindrical body P2 is almost the same as the embodiment shown in FIG. This embodiment differs from the embodiment shown in FIG. 1 in that there is no section.

Then, the uppermost ring 20, the middle ring 21, and the bottomed ring 22 are placed under the flange of the piece base P, in this order, while iron-inserting the drumming cylinder pieces to each other, thereby forming the piece P. be.

Now, the piece P as described above is heated to a temperature suitable for blow molding and put into a mold, and after stretching the stretching pin in all axial directions, or at the same time, pressurized fluid is injected into the piece P. The molding method of the present invention involves blow molding to obtain a multicolored horizontally striped cloudy body.

That is, the continuous body shown in FIG. 2 is obtained by stretch blow molding the piece P shown in FIG. It is necessary to firmly weld the two parts together.

The dust body shown in FIG. 4 is obtained by stretch-blow molding the piece P shown in FIG. The piece P is integrally stretched with the shell P2-a, and the piece P is formed into the continuous body 3.

Therefore, each of the incorporated rings 2, each having several different colors, is stretched to form several types of horizontal paper patterns that are fresh in the crab body, and the piece base that becomes the inner shell P, 1a. If P is given a cloudy color, the color change of the outer shell P2-a will be noticeable, and if it is transparent, it will be possible to bring about depth. When the piece P shown in Fig. 1 is used, the molding operation of the piece itself is simple and the number of parts can be reduced, and when the piece P shown in Fig. 3 is used, it has a double wall structure. Therefore, when it is formed into a cloudy body, its resistance to contents, strength, and color clarity (as described above, when the piece is made cloudy) are poor. As explained above, according to the primary molded product according to the present invention, a horizontal striped pattern with multiple colors can be imparted to a synthetic resin ink body by effectively combining a small number of pieces with different colors.

Therefore, it is useful for reducing the cost of pigments, parts, etc., and since the boundaries between each color are extremely clear, it is possible to obtain an excellent aesthetic sense of design, especially in decorative wings.

[Brief explanation of the drawing]

Fig. 1 is a half-sectional view of a primary molded product showing an embodiment of the present invention, and Fig. 2 is a half-sectional view of a crane body obtained by stretch-blow molding the same.
Fig. 3 is a half-sectional view of a primary molded product showing another embodiment;
The figure is a half-sectional view of a wing body formed by stretch blow molding, and FIG. 5 is a cutaway perspective view of each ring. 1...screw, 2...ring, 3...
...Top ring, 21...Middle ring, 22.
...Bottomed ring, 3...Groove body, 4...
・Mizoguchi part, P... Peace, P. ...Piece base body, P2...Bottomed cylinder, P, 1a...
・Inner shell body, P21a...Outer shell body, a, a'...
...Thickness of the ring. /Ganosukuta 2 Liu Shio〆Sardine Gata Sardine Nosumemono

Claims (1)

[Scope of Claims] 1. A colored transparent top ring with a fitting cylinder piece provided at the lower part, a colored transparent middle ring which has fitting cylinder pieces in the upper and lower parts and is different from the top ring, and an upper part. A primary blow-molded bottle is provided with a fitting cylindrical piece, the lower part is approximately hemispherical, and at least a colored transparent bottomed ring different from the intermediate ring is fitted and welded vertically to form a cylindrical shape. Molding. 2. A colored transparent top ring with a fitting tube piece provided at the bottom, a colored transparent intermediate ring with fitting tube pieces provided at the top and bottom, different from the top ring, and a fitting tube piece at the top. A bottomed cylindrical base formed by injection molding, in which at least a colored transparent bottomed ring different from the intermediate ring and having a substantially hemispherical lower part are fitted vertically to each other, and is injection-molded.
A primary molded product of a blow-molded bottle made by welding the exterior.