JPH0343152B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a container, and more particularly to a container into which a filler such as a liquid substance such as coffee milk or a powder substance is filled.

(Prior Art) This type of conventional container consists of a container body that has an opening at the top and into which a filling is filled, and a lid for sealing the opening of the container body. It was hot.

(Problems to be Solved by the Invention) In such conventional containers, when the lid is opened to unseal the container, the filling therein often spills out.

Therefore, the main object of the present invention is to provide a container in which the contents filled therein are less likely to jump out or spill when the container is opened.

(Means for Solving the Problems) The present invention provides a container comprising a container body having an opening at its upper end into which a filling is filled, and a lid for sealing the opening of the container body. The bottom of the container body has a restoring force and includes an outwardly curved curved portion, and with the curved portion deformed inward, the opening of the container body is sealed with a lid, and the bottom of the container body has a restoring force. Therefore, it is a container whose interior is under reduced pressure.

(Function) Since the inside of the container is under reduced pressure, when the lid is opened, outside air enters the container and the contents are less likely to fly out or spill.

(Effects of the Invention) According to the present invention, a container is obtained in which the filling is less likely to jump out or spill when the lid is opened.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Embodiment) FIGS. 1A to 1C each show an embodiment of the present invention, FIG. 1A is a front view thereof, FIG. 1B is a plan view thereof, and FIG. 1C is a first embodiment of the present invention. FIG. 3 is a cross-sectional view taken along line IC-IC in the figure. This container 10 includes a cup-shaped container body 12 having an opening 12a at its upper end.

As shown in FIG. 1C, the bottom 14 of the container body 12 has a curved portion 14a whose center is curved outward.
is formed as. Curved portion 14a of this bottom 14
, if you push that part inward from the bottom, 1 in Figure 1C
It deforms inward as shown by the dotted chain line, and when released, it becomes the 1st C.
It is formed so that it returns to its original state of being curved outward, as shown by the solid line in the figure. That is, the curved portion 14a of the bottom 14 is formed to have restoring force.

Furthermore, the bottom 14 of the container body 12 is
4b is formed in an inwardly curved shape, and its edge 1
4c is formed substantially flush with the outermost curved portion of the curved portion 14a. That is, the curved portion 14a of the bottom 14 is formed above the edge 14c of the bottom 14. Therefore, this container body 12 has good stability when placed on a flat surface.

Further, a body 16 is formed extending upward from the edge 14c of the bottom 14. The body portion 16 is formed into a pleated portion from the center to the lower portion in order to increase its mechanical strength.

Further, a collar portion 18 is formed extending outward from the upper end of the body portion 16 . This flange portion 18 is for attaching a lid 22, which will be described later, thereto.

Furthermore, extending outward from one end of the collar portion 18,
A knob portion 20 is formed. Further, a notch 21 is formed on the lower surface between the collar portion 18 and the knob portion 20. This notch 21 is provided to facilitate separating the knob portion 20 from the collar portion 18.

The container body 12 is formed by molding a weldable material such as a synthetic resin such as polystyrene using a molding method such as pressure molding (with plug assist) or vacuum molding.

Furthermore, on the surfaces of the collar portion 18 and the knob portion 20, the collar portion 18 and the knob portion 20 are
A lid 22 having the same shape as 0 is attached. The lid 22 has a two-layer structure, for example, with the upper layer made of a material that easily conducts heat, such as aluminum, and the lower layer made of a weldable material, such as a synthetic resin such as polyethylene terephthalate or polyester. is formed.
When attaching the lid 22 to the collar 18 and the knob 20, the lid 22 is attached to the container body 12 in advance.
A filling 25, for example coffee milk, is filled. Furthermore, the curved portion 14a of the bottom 14 of the container body 12 is deformed inward as shown by the dashed line in FIG. 1C, so that the volume inside the container body 12 is reduced from the original state shown by the solid line in FIG. 1C. . In this state, the ring-shaped sealing part 22a of the lid 22 is heat-welded to the ring-shaped sealing part 18a of the collar part 18, and the opening 12a of the container body 12 is sealed. Furthermore, the circular welded part 22b of the lid 22 is attached to the knob part 2.
The circular welding portion 20a of 0 is heat welded.

In this way, in this container 10, the opening 1 of the main body 12 can be easily opened in a state where the curved portion 14a having a restoring force is deformed inward to reduce the volume inside the container main body 12.
Since the bottom 2a is sealed, the restoring force of the curved portion 14a of the bottom 14 causes the inside thereof to be in a reduced pressure state.

In order to open this container 10, the notch 21
By folding the parts, the knob part 20 is attached to the collar part 1.
8 and peel off the lid 22 together with the knob 20 from the flange 18. In this case, container 1
Since the inside of the 0 is in a reduced pressure state, outside air enters the 0, and the filling 25 therein is less likely to jump out or spill.

Next, referring to FIG. 2A and FIG. 2B, etc., the opening 12a of the container body 12 of this container 10 is
A sealing device for sealing with the lid 22 will be described.

This sealing device 30 includes a mold 32, and the mold 32
A hole 34 having approximately the same diameter as the maximum diameter of the body 16 of the container body 12 and deeper than the height of the body 16 is formed in the container body 12 . Further, a female threaded portion 36 is formed in the mold 32 at the center of the bottom of the hole 34, and this female threaded portion 36
A bolt 38 is screwed into. In this case, when the container body 12 is pushed into the hole 34, the bolt 38
The head 38a is provided so that the curved portion 14a of the bottom 14 of the container body 12 can be turned inward as shown by the dashed line in FIG. 1C.

Furthermore, an upper base 40 is provided above the mold 32. This upper base 40 has holes 3 of the mold 32.
When the container body 12 is pushed into the container body 1
For example, holes 42a and 4 are formed in two portions facing the edges of the collar portion 18 and the knob portion 20 of
2b is formed. These holes 42a and 42
b has a large diameter at its upper part and a small diameter at its lower part, that is, it is formed in a stepped shape.

Furthermore, this sealing device 30 includes a holding pin 44a having a diameter that is approximately the same as the diameter of the lower part of the hole 42a, and a stopper member 46a having a diameter that is approximately the same as the diameter of the upper part of the hole 42a is fixed to the upper part of the holding pin 44a. Ru. These presser pins 44a and stopper members 46a
is inserted into one hole 42a. In this case, the lower end of the presser pin 44a is projected downward from the lower surface of the upper base 40. Further, the downward displacement of the presser pin 44a is restricted by the stopper 46a. Furthermore, a spring 48a is inserted into the hole 42a so that its lower end abuts against the presser pin 44a or the stopper member 46a. Further, a presser member 50a is screwed into the upper part of the hole 42a so as to be in contact with the upper end of the spring 48a. Therefore, the presser pin 44a is urged downward by the spring 48a. Moreover, the presser pin 44a can be displaced upward against the elastic force of the spring 48a.

Similarly, the other hole 42b has a presser pin 44 to which a stopper member 46b is fixed.
b, a spring 48b, and a pressing member 50b. The presser pin 44b is also the presser pin 44a.
Similarly, it is urged downward by the spring 48b,
Also, it can be displaced upward.

Further, on the lower surface of the upper base 40, when the container body 12 is inserted into the hole 34 of the mold 32, the container body 12 is
The sealing part 18a of the collar part 18 and the knob part 20
A ring-shaped heating member 52 and a circular heating member 54 are provided at the portions facing the welded portions 20a, respectively.
is provided. These heating members 52 and 54
are provided above the lower surfaces of the presser pins 44a and 44b that protrude to the bottom.

Further, the upper base 40 is provided with a cylinder (not shown) for displacing the upper base 40 in the vertical direction.

Next, a process of sealing the opening 12a of the container 10 and the container body 12 with the lid 22 using the sealing device 30 will be described with reference to FIGS. 3A to 3C.

First, as shown in FIG. 3A, the container body 12 is filled with a filler 25 such as coffee milk.

Then, this container body 12 is placed in the hole 34 of the mold 32 of the sealing device 30, and the lid 22 is placed on the collar portion 18 and the knob portion 20 of the container body 12.

Then, the cylinder of the sealing device 30 is driven to displace the upper base 40, presser pins 44a and 44b, etc. downward, and as shown in FIG. Push it into hole 34. In this state, the container body 12
The curved portion 14a of the bottom 14 of the bolt 38
It is deformed inward at 8a. Therefore, the container body 1
The volume within 2 is reduced from the original state. Further, in this state, the collar portion 18 and the knob portion 20 of the container body 12 and the lid 22 are connected to the mold 32 and the presser pin 44.
It is sandwiched between a and 44b.

Furthermore, in this state, the upper base 40 and the heating member 52
and 54 etc. downward, and as shown in FIG. 3C, the heating member 52 is used to seal the sealing portion 22a of the lid 22.
is welded to the sealing part 18a of the flange part 18 to seal the opening 12a of the container body 12 with the lid 22, and the heating member 54 connects the welded part 22b of the lid 22 to the grip part 2.
Welded to the welded part 20a of 0. Note that in this state, the presser pins 44a and 44b are pressed against the spring 48a.
and is displaced upward against the elastic force of 48b.

Then, the upper base 40 is displaced upward and the container body 12 is taken out from the hole 34 of the mold 32. By doing so, the curved portion 14a of the bottom 14 of the container main body 12 returns to its original state as shown in FIG. 1C due to its restoring force, and the inside thereof is brought into a reduced pressure state and the container 10 is manufactured.

In addition, in the above-mentioned embodiment, the bottom 1 of the container body 12
4 is formed above the edge 14c of the bottom 14;
It may be formed to protrude below 4c.

Further, in the above-described embodiment, the portion from the center to the lower part of the body 16 of the container body 12 is formed in a pleated shape, but this portion may be formed smoothly without being formed in a pleated shape.

[Brief explanation of drawings]

1A to 1C each show an embodiment of the present invention, FIG. 1A is a front view thereof, FIG. 1B is a plan view thereof, and FIG. 1C is a line IC in FIG. 1B. - It is a sectional view at IC. Second
Figure A and Figure 2B respectively show an example of a sealing device for sealing the opening of the container body of the container shown in Figures 1A to 1C with a lid, and Figure 2A is an illustrative view of the main part thereof. 2B is a plan view of the main part thereof. Figures 3A to 3C show the steps for sealing the opening of the container body of the container shown in Figures 1A to 1C with a lid using the sealing device shown in Figures 2A and 2B, respectively. FIG. In the figure, 10 is a container, 12 is a container body, 1
2a is an opening, 14 is a bottom, 14a is a curved portion, 16
18 is a collar, and 22 is a lid.

Claims (1)

[Scope of Claims] 1 A container comprising a container body having an opening at its upper end and into which a filling is filled, and a lid for sealing the opening of the container body, comprising: The bottom of the container body includes a curved portion that has a restoring force and curves outward, and the opening of the container body is sealed with the lid while the curved portion is deformed inward, and the bottom of the container body has a restoring force. A container that has a reduced pressure inside. 2. The container according to claim 1, wherein the curved portion is formed at the center of the bottom of the container body, and further, the curved portion is formed above an edge of the bottom of the container body.