JPH033466Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a bottle-shaped synthetic resin container that is particularly used for filling food and drink products.

"Prior Art" Bottle-shaped containers made of synthetic resin are used for filling various food and drink products, and for example, bottle-shaped containers made of blow-molded bodies are used.

In addition, two cups each having a flange obtained by cold-pressing a sheet for forming a container are prepared, and the upper surfaces of the flange of each cup are brought into contact and joined, and the container is placed inside the container. It has been proposed as a container that improves the bulkiness of the container before it is filled with an inner filler (Japanese Utility Model Publication No. 49875/1983).

``Problems to be solved by the present invention'' The bottle-shaped container made of the blow-molded object mentioned above is
Although the appearance of the container is orderly and gives a good impression to the consumer of the filling, it is difficult to overlap the filling even before the filling is placed inside the container, and it is difficult to manufacture the container. This method has the disadvantage that the cost for stocking and transporting the empty container between the process and the filling process is high.

Furthermore, in the case of a container using two cups each having a flange, as described in Japanese Utility Model Publication No. 56-49875, the shape of the container is symmetrical between the upper half of the container and the lower half of the container. It is not possible to obtain a bottle with a shape suitable for a food or drink container, and a protrusion consisting of a joint between flanges is formed around the body of the container on the outer circumferential surface of the maximum diameter portion of the container. Therefore, when the products are lined up in a store with the inner filler enclosed, the joints become a hindrance, making it impossible to display them neatly in a store.

In contrast, the present invention is a container that has a so-called bottle shape with an orderly appearance, and also reduces the cost of stocking and transporting empty containers between the manufacturing process and the filling process. To provide a container made of synthetic resin that can be used.

"Means for Solving the Problems" In the synthetic resin container of the present invention, the container wall is formed of a multilayer synthetic resin layer having an outer layer, an inner layer, and an intermediate layer as an adhesive layer, and the upper half of the container and the lower half of the container.

The upper half of the container includes a neck having an open opening at the top, a shoulder in the shape of a truncated cone that continues below the neck, and a body that continues below the shoulder and expands toward the end. The lower half of the container includes a body wall that is inclined inward and has a reduced diameter as it goes downward, and a body wall that extends outward from the upper end of the body wall. It is formed of a bottomed cylindrical body having a skirt portion that is inverted and extends downward, and furthermore, the lower inner peripheral surface of the bottomless cylindrical body in the upper half of the container and the skirt portion in the lower half of the container. It is welded so that the outer peripheral surfaces are in contact with each other, and the whole has a bottle shape.

The container wall of the bottle-shaped synthetic resin container of the present invention having the above structure is made of, for example, polyamide resin, polyester resin, ethylene-hydroxyvinyl resin, acrylic copolymer resin, halogenated polyvinyl resin, etc. It consists of an outer layer made of gas barrier resin, an inner layer made of polyolefin resin such as polyethylene or polypropylene that has excellent properties such as water resistance and hygiene, and an intermediate layer that is an adhesive layer between the above-mentioned outer layer and inner layer. be.

Further, as the adhesive layer, for example, ethylene-
Vinyl acetate copolymers, modified polyolefins obtained by graft copolymerizing unsaturated carboxylic acids or derivatives thereof onto polyolefins, and the like are preferably used.

Note that the container wall of the bottle-shaped synthetic resin container of the present invention may have a three-layer structure of the above-mentioned outer layer, middle layer, and inner layer, but in addition to these three-layer structure, another layer may be used. Of course, a multilayer structure in which synthetic resin layers are laminated may also be used.

"Example" Hereinafter, the specific structure of the bottle-shaped synthetic resin container of the present invention will be described based on the drawing examples.

In FIG. 1, an example of a synthetic resin container having a bottle shape of the present invention, indicated by reference numeral 1, is as follows:
The entire container wall 2 of the synthetic resin container 1 is formed of a multilayer synthetic resin layer including an outer layer 3, an inner layer 4, and an intermediate layer 5 that is an adhesive layer that adheres the outer layer 3 and the inner layer 4. .

The synthetic resin container 1 has a neck portion with an open opening at the top, a truncated conical shoulder portion continuous below the neck portion, and a body portion continuous below the shoulder portion and widening toward the end. An upper half portion 7 of the container formed by a bottomless cylindrical body 6, a body wall portion 8 that is inclined inwardly and has a reduced diameter as it goes downward, and an upper end of the body wall portion 8. and a lower container half 12 formed by a bottomed cylindrical body 11 having a skirt portion 10 that is inverted and extended outwardly downward from the container, and the body of the upper container half 7 Lower inner peripheral surface 13
and the outer circumferential surface 14 of the skirt portion 10 in the lower half portion 12 of the container are brought into contact and welded.
It is formed in one piece.

The synthetic resin container 1 having a bottle shape having the above-mentioned structure includes an upper half 7 and a lower half 12 formed by vacuum forming, pressure forming, etc. using a multilayer resin sheet as a molding material. You can get it by using it.

That is, the container upper half 7 and the container lower half 12 as shown in FIG. 2 are transported as they are to a filling company, and prior to the filling operation,
The container upper half 7 and the container lower half 12 are connected to the lower inner circumferential surface 13 of the body of the container upper half 7 and the container lower half 1.
The container 1 made of synthetic resin is obtained by assembling so that the outer peripheral surface of the skirt portion 10 in 2 is in contact with the outer peripheral surface of the skirt portion 10, and the abutting portion is further welded by, for example, spin welding.

"Actions and Effects of the Invention" The bottle-shaped synthetic resin container of the present invention is a bottle-shaped container with an orderly appearance;
Since the upper and lower halves of containers are stacked together in a telescoping manner, a large number of containers can be compactly stacked until the upper and lower halves are assembled when filling the contents. Since they can be transported and stored in bulk, transportation and storage costs can be reduced.

In addition, in the bottle-shaped synthetic resin container of the present invention, at the joint between the upper half of the container and the lower half of the container, the joint end surface protrudes outside the container, so that the inner layer forming the container wall is Since only the synthetic resin layer comes into contact with the filling material, there is no damage to the adhesive part of the laminated structure due to contact between the intermediate layer and the outer layer and the filling material at the joint end surface, and there is no deterioration of the filling material, resulting in excellent storage performance. play an action.

[Brief explanation of drawings]

Fig. 1 is a vertical cross-sectional view showing one example of a synthetic resin container having a bottle shape according to the present invention, and Fig. 2 shows the upper half of the container and the container before being molded into the synthetic resin container of Fig. 1. FIG. 3 is an exploded longitudinal cross-sectional view of the lower half. 1... Synthetic resin container having a bottle shape, 2...
Container wall portion, 3... Outer layer in container wall portion 2, 4...
...Inner layer in the container wall 2, 5... Middle layer in the container wall 2, 6... Bottomless cylindrical body, 7... Upper half of the container, 8... Trunk wall in the lower container half 12, 9
. . . Upper end of body wall portion 8, 10 . . . Skirt portion in lower half portion 12 of container, 11 .
. . . lower half of the container, 13 . . . lower inner peripheral surface of the body in the upper half 7 of the container, 14 . . . outer peripheral surface of the skirt portion 10 in the lower half of the container 12.

Claims (1)

[Scope of utility model registration request] an upper half of the container formed by a container wall made of a multilayer synthetic resin layer having an outer layer, an inner layer, and an intermediate layer that is an adhesive layer;
Similarly, the lower half of the container is made up of a container wall made of a multilayer synthetic resin layer having an outer layer, an inner layer, and an intermediate layer that is an adhesive layer. It is formed of a bottomless cylindrical body consisting of a truncated conical shoulder section that continues downward and a body section that continues below the shoulder section and expands toward the end, and the lower half of the container is A bottomed cylindrical body having a body wall part which is inclined inwardly and whose diameter is reduced as it goes downward, and a skirt part which is inverted and extended outward and downward from the upper end of the body wall part. The bottle is characterized in that the lower inner circumferential surface of the bottomless cylindrical body in the upper half of the container and the outer circumferential surface of the skirt in the lower half of the container are in contact with and welded to each other. A synthetic resin container with a shape.