JPH0613098Y2 - Flexible container - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a flexible container.

[Conventional technology]

Generally, as a flexible container such as a tube container, for example,
The one described in Japanese Utility Model Laid-Open No. 56-131354 is known.

As shown in FIG. 5, this is a cylindrical body formed of a relatively thin sheet on a head portion 12 in which a shoulder portion 10 and a mouth cylinder portion 11 are integrated.
It is a combination of 13. Since the head portion 12 is required to have a shape-retaining property, the shoulder portion is made thick and is rigidly molded.

And when the contents of this kind of tube container are used up, the contents will concentrate on the spout side,
It is common to squeeze out while deforming the shoulder.

[Problems to be solved by the invention]

However, in the above-mentioned conventional one, there is a problem that the shoulder portion is hard to be deformed because the shoulder portion is made thick and is rigidly molded, and it becomes difficult to squeeze out when the content is small.

Therefore, it is conceivable to form the shoulder portion thinly to make it soft, but if this is done, the strength is lowered and the shape retention property is deteriorated.

The present invention has been made in view of the above matters, and an technical object thereof is to provide a flexible container capable of providing flexibility without deteriorating the shape retention of the shoulder portion.

[Means for solving problems]

In order to solve the above technical problems, the present invention is a flexible container which is made of a flexible synthetic resin material and which is formed by connecting a body 2 having a bottom with a mouth tube 4 through a shoulder 3. The following configuration was adopted.

That is, a mold-retaining layer made of foamed synthetic resin 5 was formed in a region from the shoulder portion of the container body 1 to the mouth tube portion 4 to obtain a flexible container.

Foamed polyethylene is used as the foamed synthetic resin 5, and a shape-retaining layer of the foamed synthetic resin 5 made of this foamed polyethylene is formed to have an appropriate thickness to adjust the flexibility and the shape-retaining property to obtain the required flexibility and retention. Get type.

[Action]

Since a thick mold-retaining layer made of foamed synthetic resin 5 using foamed polyethylene is formed in the region from the shoulder 3 to the mouth cylinder 4, this region can be provided with appropriate flexibility. Moreover, since a sufficient material thickness can be secured at this portion, it is possible to secure an appropriate shape-retaining property for the shape-retaining layer.

Therefore, it is easy to squeeze out the contents, and
There is no fear that the container will lose its shape.

〔Example〕

 An embodiment of the present invention will be described with reference to FIG.

A mouthpiece portion 4 is continuously provided to a bottomed body portion 2 via a shoulder portion 3, and these are formed of a flexible synthetic resin material to form a flexible container.

A portion from the shoulder portion of the container body 1 to the mouth tube portion 4 is integrally molded to form a head portion H. The head portion H is a foamed synthetic resin 5 made of foamed polyethylene, and is formed to have a predetermined wall thickness thicker than the body portion 2 so as to obtain appropriate flexibility and shape-retaining property. It has a shape retention layer. The wall thickness of such a mold-retaining layer varies depending on the thickness of other portions (body 2, etc.), but is typically about 1.0 to 1.2 mm, for example.

At the time of manufacturing, the head portion H and the bottomed body portion 2 are bonded together during injection molding.

Since the bubbles are not continuous, there is no problem with the gas barrier property, and in the actual molding, the bubbles are compressed and the density is small at the part in contact with the mold (the surface of the molded product). As a result, the surface of the container is not uneven due to bubbles.

In use, when the contents are sufficient, the body 2 is pushed to squeeze out the contents. When the amount of contents becomes small, the shoulder portion 3 is held and squeezed out, but since the shoulder portion 3 is formed of the foamed synthetic resin 5, it has flexibility and can be easily squeezed out. Moreover, since the foamed synthetic resin 5 of the shoulder portion 3 is adjusted to have an appropriate thickness according to the required shape-retaining property, it has sufficient shape-retaining property and the container does not lose its shape.

As shown in FIG. 2, if a nozzle body in which a spout pipe 7 is erected is attached to the mouth tube portion 4, the hand will not be soiled even when the nozzle body is crushed and used.

3 and 4 show another embodiment in which a protective layer 6 made of a polyethylene film is laminated on the inside of the foam synthetic resin 5. With this configuration, the shape retention can be freely set.

The method of use and the function of the container are the same as those in the above-mentioned embodiment, and will be omitted.

The protective layer 6 is not limited to polyethylene, and it is needless to say that another synthetic resin material, a metal film of aluminum or the like can be used.

[Effect of device]

According to the present invention, it is possible to provide flexibility without deteriorating the shape retention property of the shoulder portion, and it is easy to squeeze out even if the content is small.

[Brief description of drawings]

FIG. 1 is a sectional view of an essential part showing an embodiment of the present invention, FIG. 2 is a perspective view of a state of use, FIGS. 3 and 4 show another embodiment, and FIG. A sectional view, FIG. 4 is an enlarged sectional view, and FIG. 5 is a sectional view showing a conventional flexible container. DESCRIPTION OF SYMBOLS 1 ... Container main body, 2 ... Body part, 3 ... Shoulder part, 4 ... Mouth tube part, 5 ... Foam synthetic resin layer.

Claims (1)

[Scope of utility model registration request] 1. A flexible container which is made of a flexible synthetic resin material and has a bottomed body portion 2 and a mouth tube portion 4 which are connected to each other through a shoulder portion 3, and a shoulder portion of a container body 1. A flexible container characterized in that a foamed synthetic resin 5 made of foamed polyethylene is formed thickly in a region from 3 to the mouth tube portion 4 to form a shape-retaining layer having flexibility and shape-retaining property.