JPH06345068A - Container with annular rib - Google Patents

Abstract

PURPOSE:To provide containers, made of thermoplastic synthetic resin, which are retained in a stable position without being deformed at their contact parts, while they are being forcibly moved along carrying rail in a large number and in adjoining arrangement. CONSTITUTION:An annular rib 7 forming the largest outside diameter part of a container 1 is provided around the lower part of the body part 4 of the container 1. Therefore, the rigidity of the annular rib part becomes high and, even if the body part 4 is deformed due to the negative pressure occurring in the container 1, the deformation does not progress toward the annular rib part. Also, despite the pressing action on the rib 7 due to the forcible movement of the containers, the deformation of the rib does not occur, thereby carrying forcibly the containers always in a stable position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a bottle-shaped container made of a thermoplastic synthetic resin such as polyethylene terephthalate, which is used for filling liquids such as beverages, liquid seasonings and alcoholic beverages.

[0002]

2. Description of the Related Art Bottle-shaped containers made of a thermoplastic synthetic resin such as polyethylene terephthalate and used for filling liquids such as beverages, liquid seasonings and alcoholic beverages have been disclosed in Japanese Utility Model Publication 59.
The one disclosed in Japanese Laid-Open Patent Publication No. 29848 is well known.

These known containers are, as shown in FIG. 2, in a transfer line before and after filling of contents.
It is a normal transfer means to be juxtaposed and juxtaposed in the transfer rail.

The known container is stretch blow molded,
If it is extremely thin and negative pressure is generated during the process of filling the inner solution, capping, cooling, etc., it will cause the pressure reduction deformation of the barrel wall of the container, which will occur when it is juxtaposed in parallel as described above. The shape of the contact portion is non-uniform, and the contact portion is easily elastically deformed when a pressing force is applied after filling the content liquid, so that there is a tendency to incline or fall during the pushing on the transfer line. I have a problem.

[0005]

According to the first and second aspects of the present invention, bottle-shaped containers stretch-blow-molded by using a thermoplastic synthetic resin such as polyethylene terephthalate are juxtaposed in parallel in a transfer line. The rigidity of this portion is provided by surrounding an annular rib that forms the maximum outer diameter portion of the container below the main body of the container, which is the main point of action of the pushing force when the product is pushed, that is, in the main body adjacent to the bottom. It is an object to stabilize the posture of the container during the feeding by increasing the pressure and preventing the elastic deformation due to the action of the reduced pressure and the pressing force.

[0006]

In order to solve the above-mentioned problems, in the invention of claim 1, a thin container made of thermoplastic synthetic resin is provided below the main body between the bottom and the neck.
An annular rib forming the maximum outer diameter portion of the container is provided around the annular rib.

According to the second aspect of the present invention, an annular groove is provided between the annular rib forming the maximum outer diameter portion of the container and the bottom portion.

[0008]

According to the first aspect of the present invention, due to the reinforcing effect of the circumferential annular ribs, even if the main body of the container is deformed under reduced pressure, the effect does not appear in the annular ribs, and the shape of the annular ribs is always maintained. Stable, and when the containers are juxtaposed side by side and pushed along the transfer line, the adjoining containers come into contact with each other at the annular rib portion and receive the action of the pushing force. Supports pressing force without deformation,
The container is transferred in a stable posture.

According to the second aspect of the present invention, the reinforcing action of the annular groove provided around is added to the reinforcing action of the annular rib,
The transfer of the container becomes more stable.

[0010]

The drawings show an example of a container in which both the inventions of claim 1 and claim 2 are implemented. Polyethylene terephthalate is used as a thermoplastic synthetic resin, and the container 1 produced by stretch blow molding is a quadrangle. The bottom part 2
A body portion 4 is formed between the neck portion 3 and the neck portion 3, and the body portion 4
Is connected to the neck 3 by a shoulder 5.

Each side of the main body portion 4 is filled with a high temperature content liquid, and after being hermetically sealed, the deformation of the main body portion 4 due to the pressure reduction in the container 1 caused by the cooling of the content liquid is shared and deformed. It is formed in the part 6.

An annular rib 7 forming the maximum outer diameter portion of the container 1 is provided around the entire circumference of the main body portion 4 at a portion adjacent to the bottom portion 2 below the main body portion 4.

Further, an annular groove 9 is provided between the annular rib 7 and the peripheral wall 8 of the bottom 2 around the entire circumference of the main body 4.

In the illustrated example, the shoulder portion 5 at the upper portion of the main body portion 4
The annular rib 10 having the same diameter as that of the annular rib 7 is also formed in the portion continuous with
However, the annular rib 10 is not an essential structure.

In the drawing, reference numeral 11 is a reinforcing concave rib provided on the panel portion 6, and reference numeral 12 is a reinforcing concave rib provided on the peripheral wall 8 of the bottom portion 2.

In FIG. 2, a large number of the containers 1 shown in FIG.
Although a state is shown in which the container 1 is pushed from the rear in the direction indicated by and is pushed in the direction of the arrow B, the containers 1 arranged adjacently may be transferred using the transfer rail 13 as a transfer belt. The container 1 contacts the stopper at a predetermined position and is stopped.

As shown in FIG. 2, in the group of containers 1 arranged side by side on the transfer rail 13, adjacent ones are brought into contact with each other by the annular rib 7 having the maximum outer diameter portion, and the pressing force is transmitted.

In the container 1 shown in the drawing, the upper annular rib 10 is also in contact.

When the transfer rail 13 is a conveyor belt, the braking force is transmitted to each container 1 through the annular rib 7 at the moment when the foremost container 1 comes into contact with the stopper.

These pressing force or braking force becomes a remarkably large force when the container 1 is filled with the internal solution.

In the container 1 according to the present invention, the annular rib 7 and the annular groove 9 are formed below the main body portion 4, the rigidity is higher than the other portions, and the reinforcing action is generated. Even if received, the annular rib 7 portion is not deformed, and the force is satisfactorily transmitted.

As described above, with the filling of the content liquid,
Even if the panel portion 6 of the main body portion 4 is deformed under reduced pressure, the deformation does not extend to the annular ribs 7, and the containers 1 are exactly brought into contact with each other at the annular ribs 7 portion, and are inclined at the time of transition. Does not occur.

[0023]

According to the first aspect of the present invention, the presence of the annular rib causes the rigidity of the rib portion to be high and the reinforcing action below the container main body portion, so that the container main body portion is deformed under reduced pressure. Also, the effect that the container is always moved in a stable posture without being deformed even when the ribs are arranged adjacent to each other and abutted against each other at the ribs, and the ribs receive a pressing force. Play.

According to the invention of claim 2, the reinforcing action of the annular rib and the annular groove synergistically increases the rigidity of this portion, so that even in the case of a large container filled with the internal solution, The deformation of the annular rib portion does not occur when the container is pushed, and the container can be moved in a stable posture.

[Brief description of drawings]

FIG. 1 is a side view of an example of an embodiment.

FIG. 2 is a partially cutaway side view showing an arrangement of containers on a transition rail.

[Explanation of symbols]

 1 Container 2 Bottom part 3 Neck part 4 Main body part 7, 10 Annular rib 9 Annular groove

Claims (2)

[Claims] 1. A thin-walled container made of thermoplastic synthetic resin, having a rib around an annular rib forming a maximum outer diameter portion of the container, below the main body between the bottom and the neck. container. 2. In a thin-walled container made of thermoplastic synthetic resin, an annular rib forming a maximum outer diameter portion of the container is provided under the main body portion between the bottom portion and the neck portion, and the annular rib is A container having a rib in which an annular groove is provided around a bottom peripheral wall.